0.10.0

Add Smoke Tests to CONTRIBUTING.md

.gitignore

@@ -1,2 +1,3 @@
 node_modules
-dist
+build
+dist

AUTHORS.md

@@ -2,25 +2,30 @@
 
 #### Ordered by first contribution.
 
-- Feross Aboukhadijeh <feross@feross.org>
-- DC <dcposch@dcpos.ch>
-- Nate Goldman <nate@ngoldman.me>
-- Chris Morris <chris@chrismorris.org>
-- Giuseppe Crinò <giuscri@gmail.com>
-- Romain Beaumont <romain.rom1@gmail.com>
-- Dan Flettre <fletd01@yahoo.com>
-- Liam Gray <liam.r.gray@gmail.com>
-- grunjol <grunjol@users.noreply.github.com>
-- Rémi Jouannet <remijouannet@users.noreply.github.com>
-- Evan Miller <miller.evan815@gmail.com>
-- Alex <alxmorais8@msn.com>
-- Diego Rodríguez Baquero <diegorbaquero@gmail.com>
-- Karlo Luis Martinez Martos <karlo.luis.m@gmail.com>
-- gabriel <furstenheim@gmail.com>
-- Rolando Guedes <rolando.guedes@3gnt.net>
-- Benjamin Tan <demoneaux@gmail.com>
-- Mathias Rasmussen <mathiasvr@gmail.com>
-- Sergey Bargamon <sergey@bargamon.ru>
-- Thomas Watson Steen <w@tson.dk>
+- Feross Aboukhadijeh (feross@feross.org)
+- DC (dcposch@dcpos.ch)
+- Nate Goldman (nate@ngoldman.me)
+- Chris Morris (chris@chrismorris.org)
+- Giuseppe Crinò (giuscri@gmail.com)
+- Romain Beaumont (romain.rom1@gmail.com)
+- Dan Flettre (fletd01@yahoo.com)
+- Liam Gray (liam.r.gray@gmail.com)
+- grunjol (grunjol@users.noreply.github.com)
+- Rémi Jouannet (remijouannet@users.noreply.github.com)
+- Evan Miller (miller.evan815@gmail.com)
+- Alex (alxmorais8@msn.com)
+- Diego Rodríguez Baquero (diegorbaquero@gmail.com)
+- Karlo Luis Martinez Martos (karlo.luis.m@gmail.com)
+- gabriel (furstenheim@gmail.com)
+- Rolando Guedes (rolando.guedes@3gnt.net)
+- Benjamin Tan (demoneaux@gmail.com)
+- Mathias Rasmussen (mathiasvr@gmail.com)
+- Sergey Bargamon (sergey@bargamon.ru)
+- Thomas Watson Steen (w@tson.dk)
+- anonymlol (anonymlol7@gmail.com)
+- Gediminas Petrikas (gedas18@gmail.com)
+- Adam Gotlib (gotlib.adam+dev@gmail.com)
+- Rémi Jouannet (remijouannet@gmail.com)
+- Andrea Tupini (tupini07@gmail.com)
 
 #### Generated by bin/update-authors.sh.

CHANGELOG.md

@@ -1,5 +1,101 @@
 # WebTorrent Desktop Version History
 
+## v0.10.0 - 2016-08-05
+
+### Added
+
+- Drag-and-drop magnet links (selected text) is now supported (#284)
+- Windows: Add "User Tasks" shortcuts to app icon in Start Menu (#114)
+- Linux: Show badge count for completed torrent downloads
+
+### Changed
+
+- Change WebTorrent Desktop peer ID prefix to 'WD' to distinguish from WebTorrent in the browser, 'WW' (#688)
+- Switch UI to React to improve UI rendering speed (#729)
+  - The primary bottleneck was actually `hyperx`, not `virtual-dom`.
+- Update Electron to 1.3.2 (#738) (#739) (#740) (#747) (#756)
+  - Mac 10.9: Fix the fullscreen button showing
+  - Mac 10.9: Fix window having border
+  - Mac 10.9: Fix occasional crash
+  - Mac: Update Squirrel.Mac to 0.2.1 (fixes situations in which updates would not get applied)
+  - Mac: Fix window not showing in Window menu
+  - Mac: Fix context menu always choosing first item by default
+  - Linux: Fix startup crashes (some Linux distros)
+  - Linux: Fix menubar not hiding after entering fullscreen (some Linux distros)
+- Improved location history (back/forward buttons) to fix rare exceptions (#687) (#748)
+  - Location history abstraction released independently as [`location-history`](https://www.npmjs.com/package/location-history)
+
+### Fixed
+
+- When streaming to VLC, set VLC window title to torrent file name (#746)
+- Fix "Cannot read property 'numPiecesPresent' of undefined" exception (#695)
+- Fix rare case where config file could not be completely written (#733)
+
+## v0.9.0 - 2016-07-20
+
+### Added
+
+- Save selected subtitles
+- Ask for confirmation before deleting torrents
+- Support Debian Jessie
+
+### Changed
+
+- Only send telemetry in production
+- Clean up the code. Split main.js, refactor lots of things
+
+### Fixed
+
+- Fix state.playing.jumpToTime behavior
+- Remove torrent file and poster image when deleting a torrent
+
+## v0.8.1 - 2016-06-24
+
+### Added
+
+- New URI handler: stream-magnet
+
+### Fixed
+
+- DLNA crashing bug
+
+## v0.8.0 - 2016-06-23
+
+### Added
+
+- Cast menu: choose which Chromecast, Airplay, or DLNA device you want to use
+- Telemetry: send basic data, plus stats on how often the play button works
+- Make posters from jpeg files, not just jpg
+- Support .wmv video via Play in VLC
+- Windows thumbnail bar with a play/pause button
+
+### Changed
+
+- Nicer modal styles
+
+### Fixed
+
+- Windows tray icon now stays in the right state
+
+## v0.7.2 - 2016-06-02
+
+### Fixed
+
+- Fix exception that affects users upgrading from v0.5.1 or older
+  - Ensure `state.saved.prefs` configuration exists
+- Fix window title on "About WebTorrent" window
+
+## v0.7.1 - 2016-06-02
+
+### Changed
+
+- Change "Step Forward" keyboard shortcut to `Alt+Left` (Windows)
+- Change "Step Backward" keyboard shortcut to to `Alt+Right` (Windows)
+
+### Fixed
+
+- First time startup bug -- invalid torrent/poster paths
+
 ## v0.7.0 - 2016-06-02
 
 ### Added

CONTRIBUTING.md

@@ -73,3 +73,23 @@ By making a contribution to this project, I certify that:
   record of the contribution (including all personal information I submit with it,
   including my sign-off) is maintained indefinitely and may be redistributed consistent
   with this project or the open source license(s) involved.
+
+## Smoke Tests
+
+Before a release, check that the following basic use cases work correctly:
+
+1. Click "Play" to stream a built-in torrent (e.g. Sintel)
+  - Ensure that seeking to undownloaded region works and plays immediately.
+  - Ensure that sintel.mp4 gets downloaded to `~/Downloads`.
+
+2. Check that the auto-updater works
+  - Open the console and check for the line "No update available" to indicate
+
+3. Add a new .torrent file via drag-and-drop.
+  - Ensure that it gets added to the list and starts downloading
+
+4. Remove a torrent from the client
+  - Ensure that the file is removed from `~/Downloads`
+
+5. Create and seed a new a torrent via drag-and-drop.
+  - Ensure that the torrent gets created and seeding begins.

README.md

@@ -7,7 +7,7 @@
   <br>
 </h1>
 
-<h4 align="center">The streaming torrent client. For OS X, Windows, and Linux.</h4>
+<h4 align="center">The streaming torrent client. For Mac, Windows, and Linux.</h4>
 
 <p align="center">
   <a href="https://gitter.im/feross/webtorrent"><img src="https://img.shields.io/badge/gitter-join%20chat%20%E2%86%92-brightgreen.svg" alt="Gitter"></a>
@@ -22,7 +22,7 @@
 ## Screenshot
 
 <p align="center">
-  <img src="https://webtorrent.io/img/screenshot-main.png" width="562" height="630" alt="screenshot" align="center">
+  <img src="https://webtorrent.io/img/screenshot-main.png" width="612" height="749" alt="screenshot" align="center">
 </p>
 
 ## How to Contribute
@@ -41,7 +41,7 @@ $ npm start
 
 ### Package app
 
-Builds app binaries for OS X, Linux, and Windows.
+Builds app binaries for Mac, Linux, and Windows.
 
 ```
 $ npm run package
@@ -57,23 +57,23 @@ Where `[platform]` is `darwin`, `linux`, `win32`, or `all` (default).
 
 The following optional arguments are available:
 
-- `--sign` - Sign the application (OS X, Windows)
+- `--sign` - Sign the application (Mac, Windows)
 - `--package=[type]` - Package single output type.
    - `deb` - Debian package
    - `zip` - Linux zip file
-   - `dmg` - OS X disk image
+   - `dmg` - Mac disk image
    - `exe` - Windows installer
    - `portable` - Windows portable app
    - `all` - All platforms (default)
 
-Note: Even with the `--package` option, the auto-update files (.nupkg for Windows, *-darwin.zip for OS X) will always be produced.
+Note: Even with the `--package` option, the auto-update files (.nupkg for Windows, *-darwin.zip for Mac) will always be produced.
 
 #### Windows build notes
 
 To package the Windows app from non-Windows platforms, [Wine](https://www.winehq.org/) needs
 to be installed.
 
-On OS X, first install [XQuartz](http://www.xquartz.org/), then run:
+On Mac, first install [XQuartz](http://www.xquartz.org/), then run:
 
 ```
 brew install wine
@@ -81,6 +81,12 @@ brew install wine
 
 (Requires the [Homebrew](http://brew.sh/) package manager.)
 
+### Privacy
+
+WebTorrent Desktop collects some basic usage stats to help us make the app better. For example, we track how well the play button works. How often does it succeed? Time out? Show a missing codec error?
+
+The app never sends personally identifying information, nor does it track which swarms you join.
+
 ### Code Style
 
 [![js-standard-style](https://cdn.rawgit.com/feross/standard/master/badge.svg)](https://github.com/feross/standard)

bin/check-deps.js

@@ -3,8 +3,55 @@
 var fs = require('fs')
 var cp = require('child_process')
 
-var BUILT_IN_DEPS = ['child_process', 'electron', 'fs', 'os', 'path']
-var EXECUTABLE_DEPS = ['gh-release', 'standard']
+// We can't use `builtin-modules` here since our TravisCI
+// setup expects this file to run with no dependencies
+var BUILT_IN_NODE_MODULES = [
+  'assert',
+  'buffer',
+  'child_process',
+  'cluster',
+  'console',
+  'constants',
+  'crypto',
+  'dgram',
+  'dns',
+  'domain',
+  'events',
+  'fs',
+  'http',
+  'https',
+  'module',
+  'net',
+  'os',
+  'path',
+  'process',
+  'punycode',
+  'querystring',
+  'readline',
+  'repl',
+  'stream',
+  'string_decoder',
+  'timers',
+  'tls',
+  'tty',
+  'url',
+  'util',
+  'v8',
+  'vm',
+  'zlib'
+]
+
+var BUILT_IN_ELECTRON_MODULES = [ 'electron' ]
+
+var BUILT_IN_DEPS = [].concat(BUILT_IN_NODE_MODULES, BUILT_IN_ELECTRON_MODULES)
+
+var EXECUTABLE_DEPS = [
+  'gh-release',
+  'standard',
+  'babel-cli',
+  'babel-plugin-syntax-jsx',
+  'babel-plugin-transform-react-jsx'
+]
 
 main()
 
@@ -19,10 +66,10 @@ function main () {
   var packageDeps = findPackageDeps()
 
   var missingDeps = usedDeps.filter(
-    (dep) => !packageDeps.includes(dep) && !BUILT_IN_DEPS.includes(dep)
+    (dep) => !includes(packageDeps, dep) && !includes(BUILT_IN_DEPS, dep)
   )
   var unusedDeps = packageDeps.filter(
-    (dep) => !usedDeps.includes(dep) && !EXECUTABLE_DEPS.includes(dep)
+    (dep) => !includes(usedDeps, dep) && !includes(EXECUTABLE_DEPS, dep)
   )
 
   if (missingDeps.length > 0) {
@@ -52,3 +99,7 @@ function findUsedDeps () {
   var stdout = cp.execSync('./bin/list-deps.sh')
   return stdout.toString().trim().split('\n')
 }
+
+function includes (arr, elem) {
+  return arr.indexOf(elem) >= 0
+}

bin/clean.js

@@ -10,11 +10,17 @@ var os = require('os')
 var path = require('path')
 var rimraf = require('rimraf')
 
-var config = require('../config')
-var handlers = require('../main/handlers')
+var config = require('../src/config')
+var handlers = require('../src/main/handlers')
 
+// First, remove generated files
+rimraf.sync('build/')
+rimraf.sync('dist/')
+
+// Remove any saved configuration
 rimraf.sync(config.CONFIG_PATH)
 
+// Remove any temporary files
 var tmpPath
 try {
   tmpPath = path.join(fs.statSync('/tmp') && '/tmp', 'webtorrent')

bin/list-deps.sh

@@ -2,7 +2,7 @@
 # This is a truly heinous hack, but it works pretty nicely.
 # Find all modules we're requiring---even conditional requires.
 
-grep "require('" *.js bin/ main/ renderer/ -R |
+grep "require('" src/ bin/ -R |
     grep '.js:' |
     sed "s/.*require('\([^'\/]*\).*/\1/" |
     grep -v '^\.' |

bin/open-config.js

@@ -1,6 +1,6 @@
 #!/usr/bin/env node
 
-var config = require('../config')
+var config = require('../src/config')
 var open = require('open')
 
 open(config.CONFIG_PATH)

bin/package.js

@@ -1,7 +1,7 @@
 #!/usr/bin/env node
 
 /**
- * Builds app binaries for OS X, Linux, and Windows.
+ * Builds app binaries for Mac, Linux, and Windows.
  */
 
 var cp = require('child_process')
@@ -15,10 +15,11 @@ var rimraf = require('rimraf')
 var series = require('run-series')
 var zip = require('cross-zip')
 
-var config = require('../config')
+var config = require('../src/config')
 var pkg = require('../package.json')
 
 var BUILD_NAME = config.APP_NAME + '-v' + config.APP_VERSION
+var BUILD_PATH = path.join(config.ROOT_PATH, 'build')
 var DIST_PATH = path.join(config.ROOT_PATH, 'dist')
 
 var argv = minimist(process.argv.slice(2), {
@@ -36,6 +37,12 @@ var argv = minimist(process.argv.slice(2), {
 
 function build () {
   rimraf.sync(DIST_PATH)
+  rimraf.sync(BUILD_PATH)
+
+  console.log('Babel: Building JSX...')
+  cp.execSync('npm run build', { NODE_ENV: 'production', stdio: 'inherit' })
+  console.log('Babel: Built JSX.')
+
   var platform = argv._[0]
   if (platform === 'darwin') {
     buildDarwin(printDone)
@@ -56,11 +63,11 @@ function build () {
 
 var all = {
   // The human-readable copyright line for the app. Maps to the `LegalCopyright` metadata
-  // property on Windows, and `NSHumanReadableCopyright` on OS X.
+  // property on Windows, and `NSHumanReadableCopyright` on Mac.
   'app-copyright': config.APP_COPYRIGHT,
 
   // The release version of the application. Maps to the `ProductVersion` metadata
-  // property on Windows, and `CFBundleShortVersionString` on OS X.
+  // property on Windows, and `CFBundleShortVersionString` on Mac.
   'app-version': pkg.version,
 
   // Package the application's source code into an archive, using Electron's archive
@@ -73,7 +80,7 @@ var all = {
   'asar-unpack': 'WebTorrent*',
 
   // The build version of the application. Maps to the FileVersion metadata property on
-  // Windows, and CFBundleVersion on OS X. Note: Windows requires the build version to
+  // Windows, and CFBundleVersion on Mac. Note: Windows requires the build version to
   // start with a number. We're using the version of the underlying WebTorrent library.
   'build-version': require('webtorrent/package.json').version,
 
@@ -82,7 +89,7 @@ var all = {
 
   // Pattern which specifies which files to ignore when copying files to create the
   // package(s).
-  ignore: /^\/dist|\/(appveyor.yml|\.appveyor.yml|\.github|appdmg|AUTHORS|CONTRIBUTORS|bench|benchmark|benchmark\.js|bin|bower\.json|component\.json|coverage|doc|docs|docs\.mli|dragdrop\.min\.js|example|examples|example\.html|example\.js|externs|ipaddr\.min\.js|Makefile|min|minimist|perf|rusha|simplepeer\.min\.js|simplewebsocket\.min\.js|static\/screenshot\.png|test|tests|test\.js|tests\.js|webtorrent\.min\.js|\.[^\/]*|.*\.md|.*\.markdown)$/,
+  ignore: /^\/src|^\/dist|\/(appveyor.yml|\.appveyor.yml|\.github|appdmg|AUTHORS|CONTRIBUTORS|bench|benchmark|benchmark\.js|bin|bower\.json|component\.json|coverage|doc|docs|docs\.mli|dragdrop\.min\.js|example|examples|example\.html|example\.js|externs|ipaddr\.min\.js|Makefile|min|minimist|perf|rusha|simplepeer\.min\.js|simplewebsocket\.min\.js|static\/screenshot\.png|test|tests|test\.js|tests\.js|webtorrent\.min\.js|\.[^\/]*|.*\.md|.*\.markdown)$/,
 
   // The application name.
   name: config.APP_NAME,
@@ -102,20 +109,20 @@ var all = {
 }
 
 var darwin = {
-  // Build for OS X
+  // Build for Mac
   platform: 'darwin',
 
   // Build 64 bit binaries only.
   arch: 'x64',
 
-  // The bundle identifier to use in the application's plist (OS X only).
+  // The bundle identifier to use in the application's plist (Mac only).
   'app-bundle-id': 'io.webtorrent.webtorrent',
 
   // The application category type, as shown in the Finder via "View" -> "Arrange by
-  // Application Category" when viewing the Applications directory (OS X only).
+  // Application Category" when viewing the Applications directory (Mac only).
   'app-category-type': 'public.app-category.utilities',
 
-  // The bundle identifier to use in the application helper's plist (OS X only).
+  // The bundle identifier to use in the application helper's plist (Mac only).
   'helper-bundle-id': 'io.webtorrent.webtorrent-helper',
 
   // Application icon.
@@ -171,10 +178,10 @@ build()
 function buildDarwin (cb) {
   var plist = require('plist')
 
-  console.log('OS X: Packaging electron...')
+  console.log('Mac: Packaging electron...')
   electronPackager(Object.assign({}, all, darwin), function (err, buildPath) {
     if (err) return cb(err)
-    console.log('OS X: Packaged electron. ' + buildPath)
+    console.log('Mac: Packaged electron. ' + buildPath)
 
     var appPath = path.join(buildPath[0], config.APP_NAME + '.app')
     var contentsPath = path.join(appPath, 'Contents')
@@ -206,6 +213,12 @@ function buildDarwin (cb) {
         CFBundleURLIconFile: path.basename(config.APP_FILE_ICON) + '.icns',
         CFBundleURLName: 'BitTorrent Magnet URL',
         CFBundleURLSchemes: [ 'magnet' ]
+      },
+      {
+        CFBundleTypeRole: 'Editor',
+        CFBundleURLIconFile: path.basename(config.APP_FILE_ICON) + '.icns',
+        CFBundleURLName: 'BitTorrent Stream-Magnet URL',
+        CFBundleURLSchemes: [ 'stream-magnet' ]
       }
     ]
 
@@ -255,9 +268,9 @@ function buildDarwin (cb) {
        *   - So the auto-updater (Squirrrel.Mac) can check that app updates are signed by
        *     the same author as the current version.
        *   - So users will not a see a warning about the app coming from an "Unidentified
-       *     Developer" when they open it for the first time (OS X Gatekeeper).
+       *     Developer" when they open it for the first time (Mac Gatekeeper).
        *
-       * To sign an OS X app for distribution outside the App Store, the following are
+       * To sign an Mac app for distribution outside the App Store, the following are
        * required:
        *   - Xcode
        *   - Xcode Command Line Tools (xcode-select --install)
@@ -269,10 +282,10 @@ function buildDarwin (cb) {
         verbose: true
       }
 
-      console.log('OS X: Signing app...')
+      console.log('Mac: Signing app...')
       sign(signOpts, function (err) {
         if (err) return cb(err)
-        console.log('OS X: Signed app.')
+        console.log('Mac: Signed app.')
         cb(null)
       })
     }
@@ -287,24 +300,24 @@ function buildDarwin (cb) {
 
     function packageZip () {
       // Create .zip file (used by the auto-updater)
-      console.log('OS X: Creating zip...')
+      console.log('Mac: Creating zip...')
 
       var inPath = path.join(buildPath[0], config.APP_NAME + '.app')
       var outPath = path.join(DIST_PATH, BUILD_NAME + '-darwin.zip')
       zip.zipSync(inPath, outPath)
 
-      console.log('OS X: Created zip.')
+      console.log('Mac: Created zip.')
     }
 
     function packageDmg (cb) {
-      console.log('OS X: Creating dmg...')
+      console.log('Mac: Creating dmg...')
 
       var appDmg = require('appdmg')
 
       var targetPath = path.join(DIST_PATH, BUILD_NAME + '.dmg')
       rimraf.sync(targetPath)
 
-      // Create a .dmg (OS X disk image) file, for easy user installation.
+      // Create a .dmg (Mac disk image) file, for easy user installation.
       var dmgOpts = {
         basepath: config.ROOT_PATH,
         target: targetPath,
@@ -332,7 +345,7 @@ function buildDarwin (cb) {
         if (info.type === 'step-begin') console.log(info.title + '...')
       })
       dmg.once('finish', function (info) {
-        console.log('OS X: Created dmg.')
+        console.log('Mac: Created dmg.')
         cb(null)
       })
     }
@@ -460,7 +473,7 @@ function buildLinux (cb) {
       info: {
         arch: destArch === 'x64' ? 'amd64' : 'i386',
         targetDir: DIST_PATH,
-        depends: 'libc6 (>= 2.4)',
+        depends: 'gconf2, libgtk2.0-0, libnss3, libxss1',
         scripts: {
           postinst: path.join(config.STATIC_PATH, 'linux', 'postinst'),
           prerm: path.join(config.STATIC_PATH, 'linux', 'prerm')

bin/update-authors.sh

@@ -2,16 +2,16 @@
 
 # Update AUTHORS.md based on git history.
 
-git log --reverse --format='%aN <%aE>' | perl -we '
+git log --reverse --format='%aN (%aE)' | perl -we '
 BEGIN {
   %seen = (), @authors = ();
 }
 while (<>) {
   next if $seen{$_};
-  next if /<support\@greenkeeper.io>/;
-  next if /<ungoldman\@gmail.com>/;
-  next if /<dc\@DCs-MacBook.local>/;
-  next if /<rolandoguedes\@gmail.com>/;
+  next if /(support\@greenkeeper.io)/;
+  next if /(ungoldman\@gmail.com)/;
+  next if /(dc\@DCs-MacBook.local)/;
+  next if /(rolandoguedes\@gmail.com)/;
   $seen{$_} = push @authors, "- ", $_;
 }
 END {

index.js

@@ -1 +1 @@
-require('./main')
+require('./build/main')

package.json

@@ -1,10 +1,10 @@
 {
   "name": "webtorrent-desktop",
-  "description": "WebTorrent, the streaming torrent client. For OS X, Windows, and Linux.",
-  "version": "0.7.1",
+  "description": "WebTorrent, the streaming torrent client. For Mac, Windows, and Linux.",
+  "version": "0.10.0",
   "author": {
     "name": "WebTorrent, LLC",
-    "email": "feross@feross.org",
+    "email": "feross@webtorrent.io",
     "url": "https://webtorrent.io"
   },
   "bin": {
@@ -15,35 +15,39 @@
   },
   "dependencies": {
     "airplayer": "^2.0.0",
-    "application-config": "^0.2.1",
+    "application-config": "^1.0.0",
     "bitfield": "^1.0.2",
     "chromecasts": "^1.8.0",
     "create-torrent": "^3.24.5",
     "deep-equal": "^1.0.1",
     "dlnacasts": "^0.1.0",
-    "drag-drop": "^2.11.0",
-    "electron-prebuilt": "1.2.1",
-    "fs-extra": "^0.27.0",
-    "hyperx": "^2.0.2",
+    "drag-drop": "^2.12.1",
+    "electron-prebuilt": "1.3.2",
+    "fs-extra": "^0.30.0",
+    "hat": "0.0.3",
     "iso-639-1": "^1.2.1",
     "languagedetect": "^1.1.1",
-    "main-loop": "^3.2.0",
+    "location-history": "^1.0.0",
     "musicmetadata": "^2.0.2",
     "network-address": "^1.1.0",
     "parse-torrent": "^5.7.3",
     "prettier-bytes": "^1.0.1",
+    "react": "^15.2.1",
+    "react-dom": "^15.2.1",
     "run-parallel": "^1.1.6",
     "semver": "^5.1.0",
     "simple-concat": "^1.0.0",
     "simple-get": "^2.0.0",
     "srt-to-vtt": "^1.1.1",
-    "virtual-dom": "^2.1.1",
     "vlc-command": "^1.0.1",
     "webtorrent": "0.x",
     "winreg": "^1.2.0",
     "zero-fill": "^2.2.3"
   },
   "devDependencies": {
+    "babel-cli": "^6.11.4",
+    "babel-plugin-syntax-jsx": "^6.13.0",
+    "babel-plugin-transform-react-jsx": "^6.8.0",
     "cross-zip": "^2.0.1",
     "electron-osx-sign": "^0.3.0",
     "electron-packager": "^7.0.0",
@@ -58,6 +62,9 @@
     "run-series": "^1.1.4",
     "standard": "^7.0.0"
   },
+  "engines": {
+    "node": ">=4.0.0"
+  },
   "homepage": "https://webtorrent.io",
   "keywords": [
     "desktop",
@@ -65,8 +72,8 @@
     "electron-app",
     "hybrid webtorrent client",
     "mad science",
-    "torrent client",
     "torrent",
+    "torrent client",
     "webtorrent"
   ],
   "license": "MIT",
@@ -80,10 +87,12 @@
     "url": "git://github.com/feross/webtorrent-desktop.git"
   },
   "scripts": {
+    "build": "babel --quiet src --out-dir build",
     "clean": "node ./bin/clean.js",
     "open-config": "node ./bin/open-config.js",
     "package": "node ./bin/package.js",
-    "start": "electron .",
+    "prepublish": "npm run build",
+    "start": "npm run build && electron .",
     "test": "standard && node ./bin/check-deps.js",
     "update-authors": "./bin/update-authors.sh"
   }

renderer/lib/hx.js

@@ -1,5 +0,0 @@
-var h = require('virtual-dom/h')
-var hyperx = require('hyperx')
-var hx = hyperx(h)
-
-module.exports = hx

renderer/lib/location-history.js

@@ -1,126 +0,0 @@
-module.exports = LocationHistory
-
-function LocationHistory () {
-  if (!new.target) return new LocationHistory()
-  this._history = []
-  this._forward = []
-  this._pending = false
-}
-
-LocationHistory.prototype.url = function () {
-  return this.current() && this.current().url
-}
-
-LocationHistory.prototype.current = function () {
-  return this._history[this._history.length - 1]
-}
-
-LocationHistory.prototype.go = function (page, cb) {
-  if (!cb) cb = noop
-  if (this._pending) return cb(null)
-
-  console.log('go', page)
-
-  this.clearForward()
-  this._go(page, cb)
-}
-
-LocationHistory.prototype.back = function (cb) {
-  var self = this
-  if (!cb) cb = noop
-  if (self._history.length <= 1 || self._pending) return cb(null)
-
-  var page = self._history.pop()
-  self._unload(page, done)
-
-  function done (err) {
-    if (err) return cb(err)
-    self._forward.push(page)
-    self._load(self.current(), cb)
-  }
-}
-
-LocationHistory.prototype.hasBack = function () {
-  return this._history.length > 1
-}
-
-LocationHistory.prototype.forward = function (cb) {
-  if (!cb) cb = noop
-  if (this._forward.length === 0 || this._pending) return cb(null)
-
-  var page = this._forward.pop()
-  this._go(page, cb)
-}
-
-LocationHistory.prototype.hasForward = function () {
-  return this._forward.length > 0
-}
-
-LocationHistory.prototype.clearForward = function (url) {
-  if (url == null) {
-    this._forward = []
-  } else {
-    console.log(this._forward)
-    console.log(url)
-    this._forward = this._forward.filter(function (page) {
-      return page.url !== url
-    })
-  }
-}
-
-LocationHistory.prototype.backToFirst = function (cb) {
-  var self = this
-  if (!cb) cb = noop
-  if (self._history.length <= 1) return cb(null)
-
-  self.back(function (err) {
-    if (err) return cb(err)
-    self.backToFirst(cb)
-  })
-}
-
-LocationHistory.prototype._go = function (page, cb) {
-  var self = this
-  if (!cb) cb = noop
-
-  self._unload(self.current(), done1)
-
-  function done1 (err) {
-    if (err) return cb(err)
-    self._load(page, done2)
-  }
-
-  function done2 (err) {
-    if (err) return cb(err)
-    self._history.push(page)
-    cb(null)
-  }
-}
-
-LocationHistory.prototype._load = function (page, cb) {
-  var self = this
-  self._pending = true
-
-  if (page && page.onbeforeload) page.onbeforeload(done)
-  else done(null)
-
-  function done (err) {
-    self._pending = false
-    cb(err)
-  }
-}
-
-LocationHistory.prototype._unload = function (page, cb) {
-  var self = this
-  self._pending = true
-
-  if (page && page.onbeforeunload) page.onbeforeunload(done)
-  else done(null)
-
-  function done (err) {
-    self._pending = false
-    cb(err)
-  }
-}
-
-function noop () {}

renderer/lib/torrent-player.js

@@ -1,44 +0,0 @@
-module.exports = {
-  isPlayable,
-  isVideo,
-  isAudio,
-  isPlayableTorrent
-}
-
-var path = require('path')
-
-/**
- * Determines whether a file in a torrent is audio/video we can play
- */
-function isPlayable (file) {
-  return isVideo(file) || isAudio(file)
-}
-
-function isVideo (file) {
-  var ext = path.extname(file.name).toLowerCase()
-  return [
-    '.avi',
-    '.m4v',
-    '.mkv',
-    '.mov',
-    '.mp4',
-    '.mpg',
-    '.ogv',
-    '.webm'
-  ].includes(ext)
-}
-
-function isAudio (file) {
-  var ext = path.extname(file.name).toLowerCase()
-  return [
-    '.aac',
-    '.ac3',
-    '.mp3',
-    '.ogg',
-    '.wav'
-  ].includes(ext)
-}
-
-function isPlayableTorrent (torrentSummary) {
-  return torrentSummary.files && torrentSummary.files.some(isPlayable)
-}

renderer/lib/torrent-summary.js

@@ -1,24 +0,0 @@
-module.exports = {
-  getPosterPath,
-  getTorrentPath
-}
-
-var path = require('path')
-var config = require('../../config')
-
-// Expects a torrentSummary
-// Returns an absolute path to the torrent file, or null if unavailable
-function getTorrentPath (torrentSummary) {
-  if (!torrentSummary || !torrentSummary.torrentFileName) return null
-  return path.join(config.TORRENT_PATH, torrentSummary.torrentFileName)
-}
-
-// Expects a torrentSummary
-// Returns an absolute path to the poster image, or null if unavailable
-function getPosterPath (torrentSummary) {
-  if (!torrentSummary || !torrentSummary.posterFileName) return null
-  var posterPath = path.join(config.POSTER_PATH, torrentSummary.posterFileName)
-  // Work around a Chrome bug (reproduced in vanilla Chrome, not just Electron):
-  // Backslashes in URLS in CSS cause bizarre string encoding issues
-  return posterPath.replace(/\\/g, '/')
-}

renderer/main.html

@@ -1,11 +0,0 @@
-<!doctype html>
-<html lang="en">
-  <head>
-    <meta charset="utf-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1">
-    <link rel="stylesheet" href="main.css" charset="utf-8">
-  </head>
-  <body>
-    <script async src="main.js"></script>
-  </body>
-</html>

renderer/views/app.js

@@ -1,82 +0,0 @@
-module.exports = App
-
-var hx = require('../lib/hx')
-var Header = require('./header')
-
-var Views = {
-  'home': require('./home'),
-  'player': require('./player'),
-  'create-torrent': require('./create-torrent'),
-  'preferences': require('./preferences')
-}
-
-var Modals = {
-  'open-torrent-address-modal': require('./open-torrent-address-modal'),
-  'update-available-modal': require('./update-available-modal'),
-  'unsupported-media-modal': require('./unsupported-media-modal')
-}
-
-function App (state) {
-  // Hide player controls while playing video, if the mouse stays still for a while
-  // Never hide the controls when:
-  // * The mouse is over the controls or we're scrubbing (see CSS)
-  // * The video is paused
-  // * The video is playing remotely on Chromecast or Airplay
-  var hideControls = state.location.url() === 'player' &&
-    state.playing.mouseStationarySince !== 0 &&
-    new Date().getTime() - state.playing.mouseStationarySince > 2000 &&
-    !state.playing.isPaused &&
-    state.playing.location === 'local' &&
-    state.playing.playbackRate === 1
-
-  var cls = [
-    'view-' + state.location.url(), /* e.g. view-home, view-player */
-    'is-' + process.platform /* e.g. is-darwin, is-win32, is-linux */
-  ]
-  if (state.window.isFullScreen) cls.push('is-fullscreen')
-  if (state.window.isFocused) cls.push('is-focused')
-  if (hideControls) cls.push('hide-video-controls')
-
-  return hx`
-    <div class='app ${cls.join(' ')}'>
-      ${Header(state)}
-      ${getErrorPopover(state)}
-      <div class='content'>${getView(state)}</div>
-      ${getModal(state)}
-    </div>
-  `
-}
-
-function getErrorPopover (state) {
-  var now = new Date().getTime()
-  var recentErrors = state.errors.filter((x) => now - x.time < 5000)
-  var hasErrors = recentErrors.length > 0
-
-  var errorElems = recentErrors.map(function (error) {
-    return hx`<div class='error'>${error.message}</div>`
-  })
-  return hx`
-    <div class='error-popover ${hasErrors ? 'visible' : 'hidden'}'>
-      <div class='title'>Error</div>
-      ${errorElems}
-    </div>
-  `
-}
-
-function getModal (state) {
-  if (!state.modal) return
-  var contents = Modals[state.modal.id](state)
-  return hx`
-    <div class='modal'>
-      <div class='modal-background'></div>
-      <div class='modal-content'>
-        ${contents}
-      </div>
-    </div>
-  `
-}
-
-function getView (state) {
-  var url = state.location.url()
-  return Views[url](state)
-}

renderer/views/create-torrent.js

@@ -1,159 +0,0 @@
-module.exports = CreateTorrentPage
-
-var createTorrent = require('create-torrent')
-var path = require('path')
-var prettyBytes = require('prettier-bytes')
-
-var {dispatch, dispatcher} = require('../lib/dispatcher')
-var hx = require('../lib/hx')
-
-function CreateTorrentPage (state) {
-  var info = state.location.current()
-
-  // Preprocess: exclude .DS_Store and other dotfiles
-  var files = info.files
-    .filter((f) => !f.name.startsWith('.'))
-    .map((f) => ({name: f.name, path: f.path, size: f.size}))
-  if (files.length === 0) return CreateTorrentErrorPage()
-
-  // First, extract the base folder that the files are all in
-  var pathPrefix = info.folderPath
-  if (!pathPrefix) {
-    pathPrefix = files.map((x) => x.path).reduce(findCommonPrefix)
-    if (!pathPrefix.endsWith('/') && !pathPrefix.endsWith('\\')) {
-      pathPrefix = path.dirname(pathPrefix)
-    }
-  }
-
-  // Sanity check: show the number of files and total size
-  var numFiles = files.length
-  var totalBytes = files
-    .map((f) => f.size)
-    .reduce((a, b) => a + b, 0)
-  var torrentInfo = `${numFiles} files, ${prettyBytes(totalBytes)}`
-
-  // Then, use the name of the base folder (or sole file, for a single file torrent)
-  // as the default name. Show all files relative to the base folder.
-  var defaultName, basePath
-  if (files.length === 1) {
-    // Single file torrent: /a/b/foo.jpg -> torrent name "foo.jpg", path "/a/b"
-    defaultName = files[0].name
-    basePath = pathPrefix
-  } else {
-    // Multi file torrent: /a/b/{foo, bar}.jpg -> torrent name "b", path "/a"
-    defaultName = path.basename(pathPrefix)
-    basePath = path.dirname(pathPrefix)
-  }
-  var maxFileElems = 100
-  var fileElems = files.slice(0, maxFileElems).map(function (file) {
-    var relativePath = files.length === 0 ? file.name : path.relative(pathPrefix, file.path)
-    return hx`<div>${relativePath}</div>`
-  })
-  if (files.length > maxFileElems) {
-    fileElems.push(hx`<div>+ ${maxFileElems - files.length} more</div>`)
-  }
-  var trackers = createTorrent.announceList.join('\n')
-  var collapsedClass = info.showAdvanced ? 'expanded' : 'collapsed'
-
-  return hx`
-    <div class='create-torrent'>
-      <h2>Create torrent ${defaultName}</h2>
-      <p class="torrent-info">
-        ${torrentInfo}
-      </p>
-      <p class='torrent-attribute'>
-        <label>Path:</label>
-        <div class='torrent-attribute'>${pathPrefix}</div>
-      </p>
-      <div class='expand-collapse ${collapsedClass}' onclick=${handleToggleShowAdvanced}>
-        ${info.showAdvanced ? 'Basic' : 'Advanced'}
-      </div>
-      <div class="create-torrent-advanced ${collapsedClass}">
-        <p class='torrent-attribute'>
-          <label>Comment:</label>
-          <textarea class='torrent-attribute torrent-comment'></textarea>
-        </p>
-        <p class='torrent-attribute'>
-          <label>Trackers:</label>
-          <textarea class='torrent-attribute torrent-trackers'>${trackers}</textarea>
-        </p>
-        <p class='torrent-attribute'>
-          <label>Private:</label>
-          <input type='checkbox' class='torrent-is-private' value='torrent-is-private'>
-        </p>
-        <p class='torrent-attribute'>
-          <label>Files:</label>
-          <div>${fileElems}</div>
-        </p>
-      </div>
-      <p class="float-right">
-        <button class='button-flat light' onclick=${handleCancel}>Cancel</button>
-        <button class='button-raised' onclick=${handleOK}>Create Torrent</button>
-      </p>
-    </div>
-  `
-
-  function handleOK () {
-    var announceList = document.querySelector('.torrent-trackers').value
-      .split('\n')
-      .map((s) => s.trim())
-      .filter((s) => s !== '')
-    var isPrivate = document.querySelector('.torrent-is-private').checked
-    var comment = document.querySelector('.torrent-comment').value.trim()
-    var options = {
-      // We can't let the user choose their own name if we want WebTorrent
-      // to use the files in place rather than creating a new folder.
-      // If we ever want to add support for that:
-      // name: document.querySelector('.torrent-name').value
-      name: defaultName,
-      path: basePath,
-      files: files,
-      announce: announceList,
-      private: isPrivate,
-      comment: comment
-    }
-    dispatch('createTorrent', options)
-  }
-
-  function handleCancel () {
-    dispatch('back')
-  }
-
-  function handleToggleShowAdvanced () {
-    // TODO: what's the clean way to handle this?
-    // Should every button on every screen have its own dispatch()?
-    info.showAdvanced = !info.showAdvanced
-    dispatch('update')
-  }
-}
-
-function CreateTorrentErrorPage () {
-  return hx`
-    <div class='create-torrent'>
-      <h2>Create torrent</h2>
-      <p class="torrent-info">
-        <p>
-          Sorry, you must select at least one file that is not a hidden file.
-        </p>
-        <p>
-          Hidden files, starting with a . character, are not included.
-        </p>
-      </p>
-      <p class="float-right">
-        <button class='button-flat light' onclick=${dispatcher('back')}>
-          Cancel
-        </button>
-      </p>
-    </div>
-  `
-}
-
-// Finds the longest common prefix
-function findCommonPrefix (a, b) {
-  for (var i = 0; i < a.length && i < b.length; i++) {
-    if (a.charCodeAt(i) !== b.charCodeAt(i)) break
-  }
-  if (i === a.length) return a
-  if (i === b.length) return b
-  return a.substring(0, i)
-}

renderer/views/header.js

@@ -1,48 +0,0 @@
-module.exports = Header
-
-var {dispatcher} = require('../lib/dispatcher')
-var hx = require('../lib/hx')
-
-function Header (state) {
-  return hx`
-    <div class='header'>
-      ${getTitle()}
-      <div class='nav left float-left'>
-        <i.icon.back
-          class=${state.location.hasBack() ? '' : 'disabled'}
-          title='Back'
-          onclick=${dispatcher('back')}>
-          chevron_left
-        </i>
-        <i.icon.forward
-          class=${state.location.hasForward() ? '' : 'disabled'}
-          title='Forward'
-          onclick=${dispatcher('forward')}>
-          chevron_right
-        </i>
-      </div>
-      <div class='nav right float-right'>
-        ${getAddButton()}
-      </div>
-    </div>
-  `
-
-  function getTitle () {
-    if (process.platform === 'darwin') {
-      return hx`<div class='title ellipsis'>${state.window.title}</div>`
-    }
-  }
-
-  function getAddButton () {
-    if (state.location.url() === 'home') {
-      return hx`
-        <i
-          class='icon add'
-          title='Add torrent'
-          onclick=${dispatcher('openFiles')}>
-          add
-        </i>
-      `
-    }
-  }
-}

renderer/views/home.js

@@ -1,296 +0,0 @@
-module.exports = TorrentList
-
-var prettyBytes = require('prettier-bytes')
-
-var hx = require('../lib/hx')
-var TorrentSummary = require('../lib/torrent-summary')
-var TorrentPlayer = require('../lib/torrent-player')
-var {dispatcher} = require('../lib/dispatcher')
-
-function TorrentList (state) {
-  var torrentRows = state.saved.torrents.map(
-    (torrentSummary) => renderTorrent(torrentSummary)
-  )
-
-  return hx`
-    <div class='torrent-list'>
-      ${torrentRows}
-      <div class='torrent-placeholder'>
-        <span class='ellipsis'>Drop a torrent file here or paste a magnet link</span>
-      </div>
-    </div>`
-
-  function renderTorrent (torrentSummary) {
-    var infoHash = torrentSummary.infoHash
-    var isSelected = infoHash && state.selectedInfoHash === infoHash
-
-    // Background image: show some nice visuals, like a frame from the movie, if possible
-    var style = {}
-    if (torrentSummary.posterFileName) {
-      var gradient = isSelected
-        ? 'linear-gradient(to bottom, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.4) 100%)'
-        : 'linear-gradient(to bottom, rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0) 100%)'
-      var posterPath = TorrentSummary.getPosterPath(torrentSummary)
-      style.backgroundImage = gradient + `, url('${posterPath}')`
-    }
-
-    // Foreground: name of the torrent, basic info like size, play button,
-    // cast buttons if available, and delete
-    var classes = ['torrent']
-    //  playStatus turns the play button into a loading spinner or error icon
-    if (torrentSummary.playStatus) classes.push(torrentSummary.playStatus)
-    if (isSelected) classes.push('selected')
-    if (!infoHash) classes.push('disabled')
-    classes = classes.join(' ')
-    return hx`
-      <div style=${style} class=${classes}
-        oncontextmenu=${infoHash && dispatcher('openTorrentContextMenu', infoHash)}
-        onclick=${infoHash && dispatcher('toggleSelectTorrent', infoHash)}>
-        ${renderTorrentMetadata(torrentSummary)}
-        ${infoHash ? renderTorrentButtons(torrentSummary) : ''}
-        ${isSelected ? renderTorrentDetails(torrentSummary) : ''}
-      </div>
-    `
-  }
-
-  // Show name, download status, % complete
-  function renderTorrentMetadata (torrentSummary) {
-    var name = torrentSummary.name || 'Loading torrent...'
-    var elements = [hx`
-      <div class='name ellipsis'>${name}</div>
-    `]
-
-    // If it's downloading/seeding then show progress info
-    var prog = torrentSummary.progress
-    if (torrentSummary.status !== 'paused' && prog) {
-      elements.push(hx`
-        <div class='ellipsis'>
-          ${renderPercentProgress()}
-          ${renderTotalProgress()}
-          ${renderPeers()}
-          ${renderDownloadSpeed()}
-          ${renderUploadSpeed()}
-        </div>
-      `)
-    }
-
-    return hx`<div class='metadata'>${elements}</div>`
-
-    function renderPercentProgress () {
-      var progress = Math.floor(100 * prog.progress)
-      return hx`<span>${progress}%</span>`
-    }
-
-    function renderTotalProgress () {
-      var downloaded = prettyBytes(prog.downloaded)
-      var total = prettyBytes(prog.length || 0)
-      if (downloaded === total) {
-        return hx`<span>${downloaded}</span>`
-      } else {
-        return hx`<span>${downloaded} / ${total}</span>`
-      }
-    }
-
-    function renderPeers () {
-      if (prog.numPeers === 0) return
-      var count = prog.numPeers === 1 ? 'peer' : 'peers'
-      return hx`<span>${prog.numPeers} ${count}</span>`
-    }
-
-    function renderDownloadSpeed () {
-      if (prog.downloadSpeed === 0) return
-      return hx`<span>↓ ${prettyBytes(prog.downloadSpeed)}/s</span>`
-    }
-
-    function renderUploadSpeed () {
-      if (prog.uploadSpeed === 0) return
-      return hx`<span>↑ ${prettyBytes(prog.uploadSpeed)}/s</span>`
-    }
-  }
-
-  // Download button toggles between torrenting (DL/seed) and paused
-  // Play button starts streaming the torrent immediately, unpausing if needed
-  function renderTorrentButtons (torrentSummary) {
-    var infoHash = torrentSummary.infoHash
-
-    var playIcon, playTooltip, playClass
-    if (torrentSummary.playStatus === 'timeout') {
-      playIcon = 'warning'
-      playTooltip = 'Playback timed out. No seeds? No internet? Click to try again.'
-    } else {
-      playIcon = 'play_arrow'
-      playTooltip = 'Start streaming'
-    }
-
-    var downloadIcon, downloadTooltip
-    if (torrentSummary.status === 'seeding') {
-      downloadIcon = 'file_upload'
-      downloadTooltip = 'Seeding. Click to stop.'
-    } else if (torrentSummary.status === 'downloading') {
-      downloadIcon = 'file_download'
-      downloadTooltip = 'Torrenting. Click to stop.'
-    } else {
-      downloadIcon = 'file_download'
-      downloadTooltip = 'Click to start torrenting.'
-    }
-
-    // Do we have a saved position? Show it using a radial progress bar on top
-    // of the play button, unless already showing a spinner there:
-    var positionElem
-    var willShowSpinner = torrentSummary.playStatus === 'requested'
-    var defaultFile = torrentSummary.files &&
-      torrentSummary.files[torrentSummary.defaultPlayFileIndex]
-    if (defaultFile && defaultFile.currentTime && !willShowSpinner) {
-      var fraction = defaultFile.currentTime / defaultFile.duration
-      positionElem = renderRadialProgressBar(fraction, 'radial-progress-large')
-      playClass = 'resume-position'
-    }
-
-    // Only show the play button for torrents that contain playable media
-    var playButton
-    if (TorrentPlayer.isPlayableTorrent(torrentSummary)) {
-      playButton = hx`
-        <i.button-round.icon.play
-          title=${playTooltip}
-          class=${playClass}
-          onclick=${dispatcher('play', infoHash)}>
-          ${playIcon}
-        </i>
-      `
-    }
-
-    return hx`
-      <div class='buttons'>
-        ${positionElem}
-        ${playButton}
-        <i.button-round.icon.download
-          class=${torrentSummary.status}
-          title=${downloadTooltip}
-          onclick=${dispatcher('toggleTorrent', infoHash)}>
-          ${downloadIcon}
-        </i>
-        <i
-          class='icon delete'
-          title='Remove torrent'
-          onclick=${dispatcher('deleteTorrent', infoHash)}>
-          close
-        </i>
-      </div>
-    `
-  }
-
-  // Show files, per-file download status and play buttons, and so on
-  function renderTorrentDetails (torrentSummary) {
-    var filesElement
-    if (!torrentSummary.files) {
-      // We don't know what files this torrent contains
-      var message = torrentSummary.status === 'paused'
-        ? 'Failed to load torrent info. Click the download button to try again...'
-        : 'Downloading torrent info...'
-      filesElement = hx`<div class='files warning'>${message}</div>`
-    } else {
-      // We do know the files. List them and show download stats for each one
-      var fileRows = torrentSummary.files
-        .map((file, index) => ({ file, index }))
-        .sort(function (a, b) {
-          if (a.file.name < b.file.name) return -1
-          if (b.file.name < a.file.name) return 1
-          return 0
-        })
-        .map((object) => renderFileRow(torrentSummary, object.file, object.index))
-
-      filesElement = hx`
-        <div class='files'>
-          <table>
-            ${fileRows}
-          </table>
-        </div>
-      `
-    }
-
-    return hx`
-      <div class='torrent-details'>
-        ${filesElement}
-      </div>
-    `
-  }
-
-  // Show a single torrentSummary file in the details view for a single torrent
-  function renderFileRow (torrentSummary, file, index) {
-    // First, find out how much of the file we've downloaded
-    // Are we even torrenting it?
-    var isSelected = torrentSummary.selections && torrentSummary.selections[index]
-    var isDone = false // Are we finished torrenting it?
-    var progress = ''
-    if (torrentSummary.progress && torrentSummary.progress.files) {
-      var fileProg = torrentSummary.progress.files[index]
-      isDone = fileProg.numPiecesPresent === fileProg.numPieces
-      progress = Math.round(100 * fileProg.numPiecesPresent / fileProg.numPieces) + '%'
-    }
-
-    // Second, for media files where we saved our position, show how far we got
-    var positionElem
-    if (file.currentTime) {
-      // Radial progress bar. 0% = start from 0:00, 270% = 3/4 of the way thru
-      positionElem = renderRadialProgressBar(file.currentTime / file.duration)
-    }
-
-    // Finally, render the file as a table row
-    var isPlayable = TorrentPlayer.isPlayable(file)
-    var infoHash = torrentSummary.infoHash
-    var icon
-    var handleClick
-    if (isPlayable) {
-      icon = 'play_arrow' /* playable? add option to play */
-      handleClick = dispatcher('play', infoHash, index)
-    } else {
-      icon = 'description' /* file icon, opens in OS default app */
-      handleClick = dispatcher('openItem', infoHash, index)
-    }
-    var rowClass = ''
-    if (!isSelected) rowClass = 'disabled' // File deselected, not being torrented
-    if (!isDone && !isPlayable) rowClass = 'disabled' // Can't open yet, can't stream
-    return hx`
-      <tr onclick=${handleClick}>
-        <td class='col-icon ${rowClass}'>
-          ${positionElem}
-          <i class='icon'>${icon}</i>
-        </td>
-        <td class='col-name ${rowClass}'>
-          ${file.name}
-        </td>
-        <td class='col-progress ${rowClass}'>
-          ${isSelected ? progress : ''}
-        </td>
-        <td class='col-size ${rowClass}'>
-          ${prettyBytes(file.length)}
-        </td>
-        <td class='col-select'
-            onclick=${dispatcher('toggleTorrentFile', infoHash, index)}>
-          <i class='icon'>${isSelected ? 'close' : 'add'}</i>
-        </td>
-      </tr>
-    `
-  }
-}
-
-function renderRadialProgressBar (fraction, cssClass) {
-  var rotation = 360 * fraction
-  var transformFill = {transform: 'rotate(' + (rotation / 2) + 'deg)'}
-  var transformFix = {transform: 'rotate(' + rotation + 'deg)'}
-
-  return hx`
-    <div class="radial-progress ${cssClass}">
-      <div class="circle">
-        <div class="mask full" style=${transformFill}>
-          <div class="fill" style=${transformFill}></div>
-        </div>
-        <div class="mask half">
-          <div class="fill" style=${transformFill}></div>
-          <div class="fill fix" style=${transformFix}></div>
-        </div>
-      </div>
-      <div class="inset"></div>
-    </div>
-  `
-}

renderer/views/open-torrent-address-modal.js

@@ -1,33 +0,0 @@
-module.exports = OpenTorrentAddressModal
-
-var {dispatch} = require('../lib/dispatcher')
-var hx = require('../lib/hx')
-
-function OpenTorrentAddressModal (state) {
-  return hx`
-    <div class='open-torrent-address-modal'>
-      <p><label>Enter torrent address or magnet link</label></p>
-      <p>
-        <input id='add-torrent-url' type='text' onkeypress=${handleKeyPress} />
-      </p>
-      <p class='float-right'>
-        <button class='button button-flat' onclick=${handleCancel}>CANCEL</button>
-          <button class='button button-raised' onclick=${handleOK}>OK</button>
-      </p>
-      <script>document.querySelector('#add-torrent-url').focus()</script>
-    </div>
-  `
-}
-
-function handleKeyPress (e) {
-  if (e.which === 13) handleOK() /* hit Enter to submit */
-}
-
-function handleOK () {
-  dispatch('exitModal')
-  dispatch('addTorrent', document.querySelector('#add-torrent-url').value)
-}
-
-function handleCancel () {
-  dispatch('exitModal')
-}

renderer/views/unsupported-media-modal.js

@@ -1,39 +0,0 @@
-module.exports = UnsupportedMediaModal
-
-var electron = require('electron')
-
-var {dispatch, dispatcher} = require('../lib/dispatcher')
-var hx = require('../lib/hx')
-
-function UnsupportedMediaModal (state) {
-  var err = state.modal.error
-  var message = (err && err.getMessage)
-    ? err.getMessage()
-    : err
-  var actionButton = state.modal.vlcInstalled
-    ? hx`<button class="button-raised" onclick=${onPlay}>Play in VLC</button>`
-    : hx`<button class="button-raised" onclick=${onInstall}>Install VLC</button>`
-  var vlcMessage = state.modal.vlcNotFound
-    ? 'Couldn\'t run VLC. Please make sure it\'s installed.'
-    : ''
-  return hx`
-    <div>
-      <p><strong>Sorry, we can't play that file.</strong></p>
-      <p>${message}</p>
-      <p class='float-right'>
-        <button class="button-flat" onclick=${dispatcher('backToList')}>Cancel</button>
-        ${actionButton}
-      </p>
-      <p class='error-text'>${vlcMessage}</p>
-    </div>
-  `
-
-  function onInstall () {
-    electron.shell.openExternal('http://www.videolan.org/vlc/')
-    state.modal.vlcInstalled = true // Assume they'll install it successfully
-  }
-
-  function onPlay () {
-    dispatch('vlcPlay')
-  }
-}

renderer/views/update-available-modal.js

@@ -1,29 +0,0 @@
-module.exports = UpdateAvailableModal
-
-var electron = require('electron')
-
-var {dispatch} = require('../lib/dispatcher')
-var hx = require('../lib/hx')
-
-function UpdateAvailableModal (state) {
-  return hx`
-    <div class='update-available-modal'>
-      <p><strong>A new version of WebTorrent is available: v${state.modal.version}</strong></p>
-      <p>We have an auto-updater for Windows and Mac. We don't have one for Linux yet, so you'll have to download the new version manually.</p>
-      <p>
-        <button class='primary' onclick=${handleOK}>Show Download Page</button>
-        <button class='cancel' onclick=${handleCancel}>Skip This Release</button>
-      </p>
-    </div>
-  `
-
-  function handleOK () {
-    electron.shell.openExternal('https://github.com/feross/webtorrent-desktop/releases')
-    dispatch('exitModal')
-  }
-
-  function handleCancel () {
-    dispatch('skipVersion', state.modal.version)
-    dispatch('exitModal')
-  }
-}

src/.babelrc

@@ -0,0 +1,6 @@
+{
+  "plugins": [
+    "syntax-jsx",
+    "transform-react-jsx"
+  ]
+}

src/config.js

@@ -4,25 +4,24 @@ var path = require('path')
 
 var APP_NAME = 'WebTorrent'
 var APP_TEAM = 'WebTorrent, LLC'
-var APP_VERSION = require('./package.json').version
+var APP_VERSION = require('../package.json').version
 
 var PORTABLE_PATH = path.join(path.dirname(process.execPath), 'Portable Settings')
 
 module.exports = {
   ANNOUNCEMENT_URL: 'https://webtorrent.io/desktop/announcement',
+  AUTO_UPDATE_URL: 'https://webtorrent.io/desktop/update',
+  CRASH_REPORT_URL: 'https://webtorrent.io/desktop/crash-report',
+  TELEMETRY_URL: 'https://webtorrent.io/desktop/telemetry',
 
   APP_COPYRIGHT: 'Copyright © 2014-2016 ' + APP_TEAM,
-  APP_FILE_ICON: path.join(__dirname, 'static', 'WebTorrentFile'),
-  APP_ICON: path.join(__dirname, 'static', 'WebTorrent'),
+  APP_FILE_ICON: path.join(__dirname, '..', 'static', 'WebTorrentFile'),
+  APP_ICON: path.join(__dirname, '..', 'static', 'WebTorrent'),
   APP_NAME: APP_NAME,
   APP_TEAM: APP_TEAM,
   APP_VERSION: APP_VERSION,
   APP_WINDOW_TITLE: APP_NAME + ' (BETA)',
 
-  AUTO_UPDATE_URL: 'https://webtorrent.io/desktop/update',
-
-  CRASH_REPORT_URL: 'https://webtorrent.io/desktop/crash-report',
-
   CONFIG_PATH: getConfigPath(),
 
   DEFAULT_TORRENTS: [
@@ -67,13 +66,13 @@ module.exports = {
   IS_PRODUCTION: isProduction(),
 
   POSTER_PATH: path.join(getConfigPath(), 'Posters'),
-  ROOT_PATH: __dirname,
-  STATIC_PATH: path.join(__dirname, 'static'),
+  ROOT_PATH: path.join(__dirname, '..'),
+  STATIC_PATH: path.join(__dirname, '..', 'static'),
   TORRENT_PATH: path.join(getConfigPath(), 'Torrents'),
 
-  WINDOW_ABOUT: 'file://' + path.join(__dirname, 'renderer', 'about.html'),
-  WINDOW_MAIN: 'file://' + path.join(__dirname, 'renderer', 'main.html'),
-  WINDOW_WEBTORRENT: 'file://' + path.join(__dirname, 'renderer', 'webtorrent.html'),
+  WINDOW_ABOUT: 'file://' + path.join(__dirname, '..', 'static', 'about.html'),
+  WINDOW_MAIN: 'file://' + path.join(__dirname, '..', 'static', 'main.html'),
+  WINDOW_WEBTORRENT: 'file://' + path.join(__dirname, '..', 'static', 'webtorrent.html'),
 
   WINDOW_MIN_HEIGHT: 38 + (120 * 2), // header height + 2 torrents
   WINDOW_MIN_WIDTH: 425
@@ -92,6 +91,10 @@ function getDefaultDownloadPath () {
     return ''
   }
 
+  if (isPortable()) {
+    return path.join(getConfigPath(), 'Downloads')
+  }
+
   var electron = require('electron')
 
   return process.type === 'renderer'

src/main/announcement.js

@@ -32,7 +32,7 @@ function init () {
 
 function onResponse (err, res, data) {
   if (err) return log(`Failed to retrieve announcement: ${err.message}`)
-  if (res.statusCode !== 200) return log('No announcement exists')
+  if (res.statusCode !== 200) return log('No announcement available')
 
   try {
     data = JSON.parse(data.toString())

src/main/dialog.js

@@ -8,7 +8,6 @@ module.exports = {
 
 var electron = require('electron')
 
-var config = require('../config')
 var log = require('./log')
 var windows = require('./windows')
 
@@ -109,7 +108,7 @@ function openTorrentAddress () {
 }
 
 /**
- * Dialogs on do not show a title on OS X, so the window title is used instead.
+ * Dialogs on do not show a title on Mac, so the window title is used instead.
  */
 function setTitle (title) {
   if (process.platform === 'darwin') {
@@ -118,5 +117,5 @@ function setTitle (title) {
 }
 
 function resetTitle () {
-  setTitle(config.APP_WINDOW_TITLE)
+  windows.main.dispatch('resetTitle')
 }

src/main/dock.js

@@ -12,7 +12,7 @@ var dialog = require('./dialog')
 var log = require('./log')
 
 /**
- * Add a right-click menu to the dock icon. (OS X)
+ * Add a right-click menu to the dock icon. (Mac)
  */
 function init () {
   if (!app.dock) return
@@ -21,7 +21,7 @@ function init () {
 }
 
 /**
- * Bounce the Downloads stack if `path` is inside the Downloads folder. (OS X)
+ * Bounce the Downloads stack if `path` is inside the Downloads folder. (Mac)
  */
 function downloadFinished (path) {
   if (!app.dock) return
@@ -30,12 +30,11 @@ function downloadFinished (path) {
 }
 
 /**
- * Display string in dock badging area. (OS X)
+ * Display a counter badge for the app. (Mac, Linux)
  */
-function setBadge (text) {
-  if (!app.dock) return
-  log(`setBadge: ${text}`)
-  app.dock.setBadge(String(text))
+function setBadge (count) {
+  log(`setBadge: ${count}`)
+  app.setBadgeCount(Number(count))
 }
 
 function getMenuTemplate () {

src/main/handlers.js

@@ -34,9 +34,10 @@ function installDarwin () {
   var electron = require('electron')
   var app = electron.app
 
-  // On OS X, only protocols that are listed in `Info.plist` can be set as the
+  // On Mac, only protocols that are listed in `Info.plist` can be set as the
   // default handler at runtime.
   app.setAsDefaultProtocolClient('magnet')
+  app.setAsDefaultProtocolClient('stream-magnet')
 
   // File handlers are defined in `Info.plist`.
 }
@@ -63,6 +64,12 @@ function installWin32 () {
     iconPath,
     EXEC_COMMAND
   )
+  registerProtocolHandlerWin32(
+    'stream-magnet',
+    'URL:BitTorrent Stream-Magnet URL',
+    iconPath,
+    EXEC_COMMAND
+  )
   registerFileHandlerWin32(
     '.torrent',
     'io.webtorrent.torrent',
@@ -201,6 +208,7 @@ function uninstallWin32 () {
   var Registry = require('winreg')
 
   unregisterProtocolHandlerWin32('magnet', EXEC_COMMAND)
+  unregisterProtocolHandlerWin32('stream-magnet', EXEC_COMMAND)
   unregisterFileHandlerWin32('.torrent', 'io.webtorrent.torrent', EXEC_COMMAND)
 
   function unregisterProtocolHandlerWin32 (protocol, command) {

src/main/index.js

@@ -17,14 +17,21 @@ var menu = require('./menu')
 var squirrelWin32 = require('./squirrel-win32')
 var tray = require('./tray')
 var updater = require('./updater')
+var userTasks = require('./user-tasks')
 var windows = require('./windows')
 
 var shouldQuit = false
 var argv = sliceArgv(process.argv)
 
+if (config.IS_PRODUCTION) {
+  // When Electron is running in production mode (packaged app), then run React
+  // in production mode too.
+  process.env.NODE_ENV = 'production'
+}
+
 if (process.platform === 'win32') {
   shouldQuit = squirrelWin32.handleEvent(argv[0])
-  argv = argv.filter((arg) => arg.indexOf('--squirrel') === -1)
+  argv = argv.filter((arg) => !arg.includes('--squirrel'))
 }
 
 if (!shouldQuit) {
@@ -68,6 +75,13 @@ function init () {
 
     // To keep app startup fast, some code is delayed.
     setTimeout(delayedInit, config.DELAYED_INIT)
+
+    // Report uncaught exceptions
+    process.on('uncaughtException', (err) => {
+      console.error(err)
+      var errJSON = {message: err.message, stack: err.stack}
+      windows.main.dispatch('uncaughtError', 'main', errJSON)
+    })
   })
 
   app.once('ipcReady', function () {
@@ -83,7 +97,10 @@ function init () {
     e.preventDefault()
     windows.main.dispatch('saveState') // try to save state on exit
     ipcMain.once('savedState', () => app.quit())
-    setTimeout(() => app.quit(), 2000) // quit after 2 secs, at most
+    setTimeout(() => {
+      console.error('Saving state took too long. Quitting.')
+      app.quit()
+    }, 2000) // quit after 2 secs, at most
   })
 
   app.on('activate', function () {
@@ -97,6 +114,7 @@ function delayedInit () {
   handlers.install()
   tray.init()
   updater.init()
+  userTasks.init()
 }
 
 function onOpen (e, torrentId) {
@@ -141,7 +159,7 @@ function processArgv (argv) {
     } else if (arg === '-u') {
       dialog.openTorrentAddress()
     } else if (arg.startsWith('-psn')) {
-      // Ignore OS X launchd "process serial number" argument
+      // Ignore Mac launchd "process serial number" argument
       // Issue: https://github.com/feross/webtorrent-desktop/issues/214
     } else {
       torrentIds.push(arg)

src/main/ipc.js

@@ -15,6 +15,7 @@ var shell = require('./shell')
 var shortcuts = require('./shortcuts')
 var vlc = require('./vlc')
 var windows = require('./windows')
+var thumbar = require('./thumbar')
 
 // Messages from the main process, to be sent once the WebTorrent process starts
 var messageQueueMainToWebTorrent = []
@@ -60,20 +61,27 @@ function init () {
 
   ipc.on('onPlayerOpen', function () {
     menu.onPlayerOpen()
-    shortcuts.onPlayerOpen()
+    powerSaveBlocker.enable()
+    shortcuts.enable()
+    thumbar.enable()
   })
 
   ipc.on('onPlayerClose', function () {
     menu.onPlayerClose()
-    shortcuts.onPlayerOpen()
+    powerSaveBlocker.disable()
+    shortcuts.disable()
+    thumbar.disable()
   })
 
-  /**
-   * Power Save Blocker
-   */
+  ipc.on('onPlayerPlay', function () {
+    powerSaveBlocker.enable()
+    thumbar.onPlayerPlay()
+  })
 
-  ipc.on('blockPowerSave', () => powerSaveBlocker.start())
-  ipc.on('unblockPowerSave', () => powerSaveBlocker.stop())
+  ipc.on('onPlayerPause', function () {
+    powerSaveBlocker.disable()
+    thumbar.onPlayerPause()
+  })
 
   /**
    * Shell
@@ -81,6 +89,7 @@ function init () {
 
   ipc.on('openItem', (e, ...args) => shell.openItem(...args))
   ipc.on('showItemInFolder', (e, ...args) => shell.showItemInFolder(...args))
+  ipc.on('moveItemToTrash', (e, ...args) => shell.moveItemToTrash(...args))
 
   /**
    * Windows: Main
@@ -106,8 +115,8 @@ function init () {
     })
   })
 
-  ipc.on('vlcPlay', function (e, url) {
-    var args = ['--play-and-exit', '--video-on-top', '--no-video-title-show', '--quiet', url]
+  ipc.on('vlcPlay', function (e, url, title) {
+    var args = ['--play-and-exit', '--video-on-top', '--no-video-title-show', '--quiet', `--meta-title=${title}`, url]
     log('Running vlc ' + args.join(' '))
 
     vlc.spawn(args, function (err, proc) {

src/main/menu.js

@@ -99,10 +99,6 @@ function getMenuTemplate () {
           type: 'separator'
         },
         {
-          label: process.platform === 'win32'
-            ? 'Close'
-            : 'Close Window',
-          accelerator: 'CmdOrCtrl+W',
           role: 'close'
         }
       ]
@@ -111,23 +107,28 @@ function getMenuTemplate () {
       label: 'Edit',
       submenu: [
         {
-          label: 'Cut',
-          accelerator: 'CmdOrCtrl+X',
+          role: 'undo'
+        },
+        {
+          role: 'redo'
+        },
+        {
+          type: 'separator'
+        },
+        {
           role: 'cut'
         },
         {
-          label: 'Copy',
-          accelerator: 'CmdOrCtrl+C',
           role: 'copy'
         },
         {
           label: 'Paste Torrent Address',
-          accelerator: 'CmdOrCtrl+V',
           role: 'paste'
         },
         {
-          label: 'Select All',
-          accelerator: 'CmdOrCtrl+A',
+          role: 'delete'
+        },
+        {
           role: 'selectall'
         },
         {
@@ -220,7 +221,7 @@ function getMenuTemplate () {
           accelerator: process.platform === 'darwin'
             ? 'CmdOrCtrl+Alt+Right'
             : 'Alt+Right',
-          click: () => windows.main.dispatch('skip', 1),
+          click: () => windows.main.dispatch('skip', 10),
           enabled: false
         },
         {
@@ -228,7 +229,7 @@ function getMenuTemplate () {
           accelerator: process.platform === 'darwin'
             ? 'CmdOrCtrl+Alt+Left'
             : 'Alt+Left',
-          click: () => windows.main.dispatch('skip', -1),
+          click: () => windows.main.dispatch('skip', -10),
           enabled: false
         },
         {
@@ -280,12 +281,11 @@ function getMenuTemplate () {
   ]
 
   if (process.platform === 'darwin') {
-    // Add WebTorrent app menu (OS X)
+    // Add WebTorrent app menu (Mac)
     template.unshift({
       label: config.APP_NAME,
       submenu: [
         {
-          label: 'About ' + config.APP_NAME,
           role: 'about'
         },
         {
@@ -300,7 +300,6 @@ function getMenuTemplate () {
           type: 'separator'
         },
         {
-          label: 'Services',
           role: 'services',
           submenu: []
         },
@@ -308,45 +307,34 @@ function getMenuTemplate () {
           type: 'separator'
         },
         {
-          label: 'Hide ' + config.APP_NAME,
-          accelerator: 'Command+H',
           role: 'hide'
         },
         {
-          label: 'Hide Others',
-          accelerator: 'Command+Alt+H',
           role: 'hideothers'
         },
         {
-          label: 'Show All',
           role: 'unhide'
         },
         {
           type: 'separator'
         },
         {
-          label: 'Quit',
-          accelerator: 'Command+Q',
-          click: () => app.quit()
+          role: 'quit'
         }
       ]
     })
 
-    // Add Window menu (OS X)
+    // Add Window menu (Mac)
     template.splice(5, 0, {
-      label: 'Window',
       role: 'window',
       submenu: [
         {
-          label: 'Minimize',
-          accelerator: 'CmdOrCtrl+M',
           role: 'minimize'
         },
         {
           type: 'separator'
         },
         {
-          label: 'Bring All to Front',
           role: 'front'
         }
       ]

src/main/power-save-blocker.js

@@ -1,6 +1,6 @@
 module.exports = {
-  start,
-  stop
+  enable,
+  disable
 }
 
 var electron = require('electron')
@@ -12,19 +12,19 @@ var blockId = 0
  * Block the system from entering low-power (sleep) mode or turning off the
  * display.
  */
-function start () {
-  stop() // Stop the previous power saver block, if one exists.
+function enable () {
+  disable() // Stop the previous power saver block, if one exists.
   blockId = electron.powerSaveBlocker.start('prevent-display-sleep')
-  log(`powerSaveBlocker.start: ${blockId}`)
+  log(`powerSaveBlocker.enable: ${blockId}`)
 }
 
 /**
  * Stop blocking the system from entering low-power mode.
  */
-function stop () {
+function disable () {
   if (!electron.powerSaveBlocker.isStarted(blockId)) {
     return
   }
   electron.powerSaveBlocker.stop(blockId)
-  log(`powerSaveBlocker.stop: ${blockId}`)
+  log(`powerSaveBlocker.disable: ${blockId}`)
 }

src/main/shell.js

@@ -1,7 +1,8 @@
 module.exports = {
   openExternal,
   openItem,
-  showItemInFolder
+  showItemInFolder,
+  moveItemToTrash
 }
 
 var electron = require('electron')
@@ -30,3 +31,11 @@ function showItemInFolder (path) {
   log(`showItemInFolder: ${path}`)
   electron.shell.showItemInFolder(path)
 }
+
+/**
+ * Move the given file to trash and returns a boolean status for the operation.
+ */
+function moveItemToTrash (path) {
+  log(`moveItemToTrash: ${path}`)
+  electron.shell.moveItemToTrash(path)
+}

src/main/shortcuts.js

@@ -1,12 +1,12 @@
 module.exports = {
-  onPlayerClose,
-  onPlayerOpen
+  disable,
+  enable
 }
 
 var electron = require('electron')
 var windows = require('./windows')
 
-function onPlayerOpen () {
+function enable () {
   // Register play/pause media key, available on some keyboards.
   electron.globalShortcut.register(
     'MediaPlayPause',
@@ -14,7 +14,7 @@ function onPlayerOpen () {
   )
 }
 
-function onPlayerClose () {
+function disable () {
   // Return the media key to the OS, so other apps can use it.
   electron.globalShortcut.unregister('MediaPlayPause')
 }

src/main/thumbar.js

@@ -0,0 +1,54 @@
+module.exports = {
+  disable,
+  enable,
+  onPlayerPause,
+  onPlayerPlay
+}
+
+/**
+ * On Windows, add a "thumbnail toolbar" with a play/pause button in the taskbar.
+ * This provides users a way to access play/pause functionality without restoring
+ * or activating the window.
+ */
+
+var path = require('path')
+var config = require('../config')
+
+var windows = require('./windows')
+
+/**
+ * Show the Windows thumbnail toolbar buttons.
+ */
+function enable () {
+  update(false)
+}
+
+/**
+ * Hide the Windows thumbnail toolbar buttons.
+ */
+function disable () {
+  windows.main.win.setThumbarButtons([])
+}
+
+function onPlayerPause () {
+  update(true)
+}
+
+function onPlayerPlay () {
+  update(false)
+}
+
+function update (isPaused) {
+  var icon = isPaused
+    ? 'PlayThumbnailBarButton.png'
+    : 'PauseThumbnailBarButton.png'
+
+  var buttons = [
+    {
+      tooltip: isPaused ? 'Play' : 'Pause',
+      icon: path.join(config.STATIC_PATH, icon),
+      click: () => windows.main.dispatch('playPause')
+    }
+  ]
+  windows.main.win.setThumbarButtons(buttons)
+}

src/main/tray.js

@@ -21,7 +21,7 @@ function init () {
   if (process.platform === 'win32') {
     initWin32()
   }
-  // OS X apps generally do not have menu bar icons
+  // Mac apps generally do not have menu bar icons
 }
 
 /**

src/main/updater.js

@@ -63,7 +63,7 @@ function initDarwinWin32 () {
 
   electron.autoUpdater.on(
     'update-not-available',
-    () => log('Update not available')
+    () => log('No update available')
   )
 
   electron.autoUpdater.on(

src/main/user-tasks.js

@@ -0,0 +1,43 @@
+module.exports = {
+  init
+}
+
+var electron = require('electron')
+
+var app = electron.app
+
+/**
+ * Add a user task menu to the app icon on right-click. (Windows)
+ */
+function init () {
+  if (process.platform !== 'win32') return
+  app.setUserTasks(getUserTasks())
+}
+
+function getUserTasks () {
+  return [
+    {
+      arguments: '-n',
+      title: 'Create New Torrent...',
+      description: 'Create a new torrent'
+    },
+    {
+      arguments: '-o',
+      title: 'Open Torrent File...',
+      description: 'Open a .torrent file'
+    },
+    {
+      arguments: '-u',
+      title: 'Open Torrent Address...',
+      description: 'Open a torrent from a URL'
+    }
+  ].map(getUserTasksItem)
+}
+
+function getUserTasksItem (item) {
+  return Object.assign(item, {
+    program: process.execPath,
+    iconPath: process.execPath,
+    iconIndex: 0
+  })
+}

src/main/windows/about.js

@@ -22,6 +22,7 @@ function init () {
     resizable: false,
     show: false,
     skipTaskbar: true,
+    title: 'About ' + config.APP_WINDOW_TITLE,
     useContentSize: true,
     width: 300
   })

src/main/windows/main.js

@@ -37,7 +37,7 @@ function init () {
     minWidth: config.WINDOW_MIN_WIDTH,
     minHeight: config.WINDOW_MIN_HEIGHT,
     title: config.APP_WINDOW_TITLE,
-    titleBarStyle: 'hidden-inset', // Hide title bar (OS X)
+    titleBarStyle: 'hidden-inset', // Hide title bar (Mac)
     useContentSize: true, // Specify web page size without OS chrome
     width: 500,
     height: HEADER_HEIGHT + (TORRENT_HEIGHT * 6) // header height + 5 torrents
@@ -51,15 +51,11 @@ function init () {
     menu.onToggleFullScreen(main.win.isFullScreen())
   })
 
-  win.on('blur', function () {
-    menu.onWindowBlur()
-    tray.onWindowBlur()
-  })
+  win.on('blur', onWindowBlur)
+  win.on('focus', onWindowFocus)
 
-  win.on('focus', function () {
-    menu.onWindowFocus()
-    tray.onWindowFocus()
-  })
+  win.on('hide', onWindowBlur)
+  win.on('show', onWindowFocus)
 
   win.on('enter-full-screen', function () {
     menu.onToggleFullScreen(true)
@@ -78,7 +74,7 @@ function init () {
       app.quit()
     } else if (!app.isQuitting) {
       e.preventDefault()
-      win.hide()
+      hide()
     }
   })
 }
@@ -99,7 +95,7 @@ function send (...args) {
 }
 
 /**
- * Enforce window aspect ratio. Remove with 0. (OS X)
+ * Enforce window aspect ratio. Remove with 0. (Mac)
  */
 function setAspectRatio (aspectRatio) {
   if (!main.win) return
@@ -200,13 +196,23 @@ function toggleFullScreen (flag) {
   log(`toggleFullScreen ${flag}`)
 
   if (flag) {
-    // Fullscreen and aspect ratio do not play well together. (OS X)
+    // Fullscreen and aspect ratio do not play well together. (Mac)
     main.win.setAspectRatio(0)
   }
 
   main.win.setFullScreen(flag)
 }
 
+function onWindowBlur () {
+  menu.onWindowBlur()
+  tray.onWindowBlur()
+}
+
+function onWindowFocus () {
+  menu.onWindowFocus()
+  tray.onWindowFocus()
+}
+
 function getIconPath () {
   return process.platform === 'win32'
     ? config.APP_ICON + '.ico'

src/renderer/controllers/media-controller.js

@@ -0,0 +1,56 @@
+const electron = require('electron')
+
+const ipcRenderer = electron.ipcRenderer
+
+// Controls local play back: the <video>/<audio> tag and VLC
+// Does not control remote casting (Chromecast etc)
+module.exports = class MediaController {
+  constructor (state) {
+    this.state = state
+  }
+
+  mediaSuccess () {
+    this.state.playing.result = 'success'
+  }
+
+  mediaStalled () {
+    this.state.playing.isStalled = true
+  }
+
+  mediaError (error) {
+    var state = this.state
+    if (state.location.url() === 'player') {
+      state.playing.result = 'error'
+      state.playing.location = 'error'
+      ipcRenderer.send('checkForVLC')
+      ipcRenderer.once('checkForVLC', function (e, isInstalled) {
+        state.modal = {
+          id: 'unsupported-media-modal',
+          error: error,
+          vlcInstalled: isInstalled
+        }
+      })
+    }
+  }
+
+  mediaTimeUpdate () {
+    this.state.playing.lastTimeUpdate = new Date().getTime()
+    this.state.playing.isStalled = false
+  }
+
+  mediaMouseMoved () {
+    this.state.playing.mouseStationarySince = new Date().getTime()
+  }
+
+  vlcPlay () {
+    ipcRenderer.send('vlcPlay', this.state.server.localURL, this.state.window.title)
+    this.state.playing.location = 'vlc'
+  }
+
+  vlcNotFound () {
+    var modal = this.state.modal
+    if (modal && modal.id === 'unsupported-media-modal') {
+      modal.vlcNotFound = true
+    }
+  }
+}

src/renderer/controllers/playback-controller.js

@@ -0,0 +1,309 @@
+const electron = require('electron')
+const path = require('path')
+
+const Cast = require('../lib/cast')
+const {dispatch} = require('../lib/dispatcher')
+const telemetry = require('../lib/telemetry')
+const errors = require('../lib/errors')
+const sound = require('../lib/sound')
+const TorrentPlayer = require('../lib/torrent-player')
+const TorrentSummary = require('../lib/torrent-summary')
+const State = require('../lib/state')
+
+const ipcRenderer = electron.ipcRenderer
+
+// Controls playback of torrents and files within torrents
+// both local (<video>,<audio>,VLC) and remote (cast)
+module.exports = class PlaybackController {
+  constructor (state, config, update) {
+    this.state = state
+    this.config = config
+    this.update = update
+  }
+
+  // Play a file in a torrent.
+  // * Start torrenting, if necessary
+  // * Stream, if not already fully downloaded
+  // * If no file index is provided, pick the default file to play
+  playFile (infoHash, index /* optional */) {
+    this.state.location.go({
+      url: 'player',
+      setup: (cb) => {
+        this.play()
+        this.openPlayer(infoHash, index, cb)
+      },
+      destroy: () => this.closePlayer()
+    }, (err) => {
+      if (err) dispatch('error', err)
+    })
+  }
+
+  // Show a file in the OS, eg in Finder on a Mac
+  openItem (infoHash, index) {
+    var torrentSummary = TorrentSummary.getByKey(this.state, infoHash)
+    var filePath = path.join(
+      torrentSummary.path,
+      torrentSummary.files[index].path)
+    ipcRenderer.send('openItem', filePath)
+  }
+
+  // Toggle (play or pause) the currently playing media
+  playPause () {
+    var state = this.state
+    if (state.location.url() !== 'player') return
+
+    // force rerendering if window is hidden,
+    // in order to bypass `raf` and play/pause media immediately
+    var mediaTag = document.querySelector('video,audio')
+    if (!state.window.isVisible && mediaTag) {
+      if (state.playing.isPaused) mediaTag.play()
+      else mediaTag.pause()
+    }
+
+    if (state.playing.isPaused) this.play()
+    else this.pause()
+  }
+
+  // Play (unpause) the current media
+  play () {
+    var state = this.state
+    if (!state.playing.isPaused) return
+    state.playing.isPaused = false
+    if (isCasting(state)) {
+      Cast.play()
+    }
+    ipcRenderer.send('onPlayerPlay')
+  }
+
+  // Pause the currently playing media
+  pause () {
+    var state = this.state
+    if (state.playing.isPaused) return
+    state.playing.isPaused = true
+    if (isCasting(state)) {
+      Cast.pause()
+    }
+    ipcRenderer.send('onPlayerPause')
+  }
+
+  // Skip specified number of seconds (backwards if negative)
+  skip (time) {
+    this.skipTo(this.state.playing.currentTime + time)
+  }
+
+  // Skip (aka seek) to a specific point, in seconds
+  skipTo (time) {
+    if (isCasting(this.state)) Cast.seek(time)
+    else this.state.playing.jumpToTime = time
+  }
+
+  // Change playback speed. 1 = faster, -1 = slower
+  // Playback speed ranges from 16 (fast forward) to 1 (normal playback)
+  // to 0.25 (quarter-speed playback), then goes to -0.25, -0.5, -1, -2, etc
+  // until -16 (fast rewind)
+  changePlaybackRate (direction) {
+    var state = this.state
+    var rate = state.playing.playbackRate
+    if (direction > 0 && rate >= 0.25 && rate < 2) {
+      rate += 0.25
+    } else if (direction < 0 && rate > 0.25 && rate <= 2) {
+      rate -= 0.25
+    } else if (direction < 0 && rate === 0.25) { /* when we set playback rate at 0 in html 5, playback hangs ;( */
+      rate = -1
+    } else if (direction > 0 && rate === -1) {
+      rate = 0.25
+    } else if ((direction > 0 && rate >= 1 && rate < 16) || (direction < 0 && rate > -16 && rate <= -1)) {
+      rate *= 2
+    } else if ((direction < 0 && rate > 1 && rate <= 16) || (direction > 0 && rate >= -16 && rate < -1)) {
+      rate /= 2
+    }
+    state.playing.playbackRate = rate
+    if (isCasting(state) && !Cast.setRate(rate)) {
+      state.playing.playbackRate = 1
+    }
+  }
+
+  // Change the volume, in range [0, 1], by some amount
+  // For example, volume muted (0), changeVolume (0.3) increases to 30% volume
+  changeVolume (delta) {
+    // change volume with delta value
+    this.setVolume(this.state.playing.volume + delta)
+  }
+
+  // Set the volume to some value in [0, 1]
+  setVolume (volume) {
+    // check if its in [0.0 - 1.0] range
+    volume = Math.max(0, Math.min(1, volume))
+
+    var state = this.state
+    if (isCasting(state)) {
+      Cast.setVolume(volume)
+    } else {
+      state.playing.setVolume = volume
+    }
+  }
+
+  // Hide player controls while playing video, if the mouse stays still for a while
+  // Never hide the controls when:
+  // * The mouse is over the controls or we're scrubbing (see CSS)
+  // * The video is paused
+  // * The video is playing remotely on Chromecast or Airplay
+  showOrHidePlayerControls () {
+    var state = this.state
+    var hideControls = state.location.url() === 'player' &&
+      state.playing.mouseStationarySince !== 0 &&
+      new Date().getTime() - state.playing.mouseStationarySince > 2000 &&
+      !state.playing.isPaused &&
+      state.playing.location === 'local'
+
+    if (hideControls !== state.playing.hideControls) {
+      state.playing.hideControls = hideControls
+      return true
+    }
+    return false
+  }
+
+  // Opens the video player to a specific torrent
+  openPlayer (infoHash, index, cb) {
+    var torrentSummary = TorrentSummary.getByKey(this.state, infoHash)
+
+    // automatically choose which file in the torrent to play, if necessary
+    if (index === undefined) index = torrentSummary.defaultPlayFileIndex
+    if (index === undefined) index = TorrentPlayer.pickFileToPlay(torrentSummary.files)
+    if (index === undefined) return cb(new errors.UnplayableError())
+
+    // update UI to show pending playback
+    if (torrentSummary.progress !== 1) sound.play('PLAY')
+    // TODO: remove torrentSummary.playStatus
+    torrentSummary.playStatus = 'requested'
+    this.update()
+
+    var timeout = setTimeout(() => {
+      telemetry.logPlayAttempt('timeout')
+      // TODO: remove torrentSummary.playStatus
+      torrentSummary.playStatus = 'timeout' /* no seeders available? */
+      sound.play('ERROR')
+      cb(new Error('Playback timed out. Try again.'))
+      this.update()
+    }, 10000) /* give it a few seconds */
+
+    if (torrentSummary.status === 'paused') {
+      dispatch('startTorrentingSummary', torrentSummary)
+      ipcRenderer.once('wt-ready-' + torrentSummary.infoHash,
+        () => this.openPlayerFromActiveTorrent(torrentSummary, index, timeout, cb))
+    } else {
+      this.openPlayerFromActiveTorrent(torrentSummary, index, timeout, cb)
+    }
+  }
+
+  openPlayerFromActiveTorrent (torrentSummary, index, timeout, cb) {
+    var fileSummary = torrentSummary.files[index]
+
+    // update state
+    var state = this.state
+    state.playing.infoHash = torrentSummary.infoHash
+    state.playing.fileIndex = index
+    state.playing.type = TorrentPlayer.isVideo(fileSummary) ? 'video'
+      : TorrentPlayer.isAudio(fileSummary) ? 'audio'
+      : 'other'
+
+    // pick up where we left off
+    if (fileSummary.currentTime) {
+      var fraction = fileSummary.currentTime / fileSummary.duration
+      var secondsLeft = fileSummary.duration - fileSummary.currentTime
+      if (fraction < 0.9 && secondsLeft > 10) {
+        state.playing.jumpToTime = fileSummary.currentTime
+      }
+    }
+
+    // if it's audio, parse out the metadata (artist, title, etc)
+    if (state.playing.type === 'audio' && !fileSummary.audioInfo) {
+      ipcRenderer.send('wt-get-audio-metadata', torrentSummary.infoHash, index)
+    }
+
+    // if it's video, check for subtitles files that are done downloading
+    dispatch('checkForSubtitles')
+
+    // enable previously selected subtitle track
+    if (fileSummary.selectedSubtitle) {
+      dispatch('addSubtitles', [fileSummary.selectedSubtitle], true)
+    }
+
+    ipcRenderer.send('wt-start-server', torrentSummary.infoHash, index)
+    ipcRenderer.once('wt-server-' + torrentSummary.infoHash, (e, info) => {
+      clearTimeout(timeout)
+
+      // if we timed out (user clicked play a long time ago), don't autoplay
+      var timedOut = torrentSummary.playStatus === 'timeout'
+      delete torrentSummary.playStatus
+      if (timedOut) {
+        ipcRenderer.send('wt-stop-server')
+        return this.update()
+      }
+
+      // otherwise, play the video
+      dispatch('setTitle', torrentSummary.files[state.playing.fileIndex].name)
+      this.update()
+
+      ipcRenderer.send('onPlayerOpen')
+
+      cb()
+    })
+  }
+
+  closePlayer () {
+    console.log('closePlayer')
+
+    // Quit any external players, like Chromecast/Airplay/etc or VLC
+    var state = this.state
+    if (isCasting(state)) {
+      Cast.stop()
+    }
+    if (state.playing.location === 'vlc') {
+      ipcRenderer.send('vlcQuit')
+    }
+
+    // Save volume (this session only, not in state.saved)
+    state.previousVolume = state.playing.volume
+
+    // Telemetry: track what happens after the user clicks play
+    var result = state.playing.result // 'success' or 'error'
+    if (result === 'success') telemetry.logPlayAttempt('success') // first frame displayed
+    else if (result === 'error') telemetry.logPlayAttempt('error') // codec missing, etc
+    else if (result === undefined) telemetry.logPlayAttempt('abandoned') // user exited before first frame
+    else console.error('Unknown state.playing.result', state.playing.result)
+
+    // Reset the window contents back to the home screen
+    state.playing = State.getDefaultPlayState()
+    state.server = null
+
+    // Reset the window size and location back to where it was
+    if (state.window.isFullScreen) {
+      dispatch('toggleFullScreen', false)
+    }
+    restoreBounds(state)
+
+    // Tell the WebTorrent process to kill the torrent-to-HTTP server
+    ipcRenderer.send('wt-stop-server')
+
+    ipcRenderer.send('onPlayerClose')
+
+    this.update()
+  }
+}
+
+// Checks whether we are connected and already casting
+// Returns false if we not casting (state.playing.location === 'local')
+// or if we're trying to connect but haven't yet ('chromecast-pending', etc)
+function isCasting (state) {
+  return state.playing.location === 'chromecast' ||
+    state.playing.location === 'airplay' ||
+    state.playing.location === 'dlna'
+}
+
+function restoreBounds (state) {
+  ipcRenderer.send('setAspectRatio', 0)
+  if (state.window.bounds) {
+    ipcRenderer.send('setBounds', state.window.bounds, false)
+  }
+}

src/renderer/controllers/prefs-controller.js

@@ -0,0 +1,47 @@
+const {dispatch} = require('../lib/dispatcher')
+const State = require('../lib/state')
+
+// Controls the Preferences screen
+module.exports = class PrefsController {
+  constructor (state, config) {
+    this.state = state
+    this.config = config
+  }
+
+  // Goes to the Preferences screen
+  show () {
+    var state = this.state
+    state.location.go({
+      url: 'preferences',
+      setup: function (cb) {
+        // initialize preferences
+        dispatch('setTitle', 'Preferences')
+        state.unsaved = Object.assign(state.unsaved || {}, {prefs: state.saved.prefs || {}})
+        cb()
+      },
+      destroy: () => this.save()
+    })
+  }
+
+  // Updates a single property in the UNSAVED prefs
+  // For example: updatePreferences('foo.bar', 'baz')
+  // Call save() to save to config.json
+  update (property, value) {
+    var path = property.split('.')
+    var key = this.state.unsaved.prefs
+    for (var i = 0; i < path.length - 1; i++) {
+      if (typeof key[path[i]] === 'undefined') {
+        key[path[i]] = {}
+      }
+      key = key[path[i]]
+    }
+    key[path[i]] = value
+  }
+
+  // All unsaved prefs take effect atomically, and are saved to config.json
+  save () {
+    var state = this.state
+    state.saved.prefs = Object.assign(state.saved.prefs || {}, state.unsaved.prefs)
+    State.save(state)
+  }
+}

src/renderer/controllers/subtitles-controller.js

@@ -0,0 +1,137 @@
+const electron = require('electron')
+const fs = require('fs-extra')
+const path = require('path')
+const parallel = require('run-parallel')
+
+const {dispatch} = require('../lib/dispatcher')
+
+module.exports = class SubtitlesController {
+  constructor (state) {
+    this.state = state
+  }
+
+  openSubtitles () {
+    electron.remote.dialog.showOpenDialog({
+      title: 'Select a subtitles file.',
+      filters: [ { name: 'Subtitles', extensions: ['vtt', 'srt'] } ],
+      properties: [ 'openFile' ]
+    }, (filenames) => {
+      if (!Array.isArray(filenames)) return
+      this.addSubtitles(filenames, true)
+    })
+  }
+
+  selectSubtitle (ix) {
+    this.state.playing.subtitles.selectedIndex = ix
+  }
+
+  toggleSubtitlesMenu () {
+    var subtitles = this.state.playing.subtitles
+    subtitles.showMenu = !subtitles.showMenu
+  }
+
+  addSubtitles (files, autoSelect) {
+    var state = this.state
+    // Subtitles are only supported when playing video files
+    if (state.playing.type !== 'video') return
+    if (files.length === 0) return
+    var subtitles = state.playing.subtitles
+
+    // Read the files concurrently, then add all resulting subtitle tracks
+    var tasks = files.map((file) => (cb) => loadSubtitle(file, cb))
+    parallel(tasks, function (err, tracks) {
+      if (err) return dispatch('error', err)
+
+      for (var i = 0; i < tracks.length; i++) {
+        // No dupes allowed
+        var track = tracks[i]
+        var trackIndex = state.playing.subtitles.tracks
+          .findIndex((t) => track.filePath === t.filePath)
+
+        // Add the track
+        if (trackIndex === -1) {
+          trackIndex = state.playing.subtitles.tracks.push(track) - 1
+        }
+
+        // If we're auto-selecting a track, try to find one in the user's language
+        if (autoSelect && (i === 0 || isSystemLanguage(track.language))) {
+          state.playing.subtitles.selectedIndex = trackIndex
+        }
+      }
+
+      // Finally, make sure no two tracks have the same label
+      relabelSubtitles(subtitles)
+    })
+  }
+
+  checkForSubtitles () {
+    if (this.state.playing.type !== 'video') return
+    var torrentSummary = this.state.getPlayingTorrentSummary()
+    if (!torrentSummary || !torrentSummary.progress) return
+
+    torrentSummary.progress.files.forEach((fp, ix) => {
+      if (fp.numPieces !== fp.numPiecesPresent) return // ignore incomplete files
+      var file = torrentSummary.files[ix]
+      if (!this.isSubtitle(file.name)) return
+      var filePath = path.join(torrentSummary.path, file.path)
+      this.addSubtitles([filePath], false)
+    })
+  }
+
+  isSubtitle (file) {
+    var name = typeof file === 'string' ? file : file.name
+    var ext = path.extname(name).toLowerCase()
+    return ext === '.srt' || ext === '.vtt'
+  }
+}
+
+function loadSubtitle (file, cb) {
+  // Lazy load to keep startup fast
+  var concat = require('simple-concat')
+  var LanguageDetect = require('languagedetect')
+  var srtToVtt = require('srt-to-vtt')
+
+  // Read the .SRT or .VTT file, parse it, add subtitle track
+  var filePath = file.path || file
+
+  var vttStream = fs.createReadStream(filePath).pipe(srtToVtt())
+
+  concat(vttStream, function (err, buf) {
+    if (err) return dispatch('error', 'Can\'t parse subtitles file.')
+
+    // Detect what language the subtitles are in
+    var vttContents = buf.toString().replace(/(.*-->.*)/g, '')
+    var langDetected = (new LanguageDetect()).detect(vttContents, 2)
+    langDetected = langDetected.length ? langDetected[0][0] : 'subtitle'
+    langDetected = langDetected.slice(0, 1).toUpperCase() + langDetected.slice(1)
+
+    var track = {
+      buffer: 'data:text/vtt;base64,' + buf.toString('base64'),
+      language: langDetected,
+      label: langDetected,
+      filePath: filePath
+    }
+
+    cb(null, track)
+  })
+}
+
+// Checks whether a language name like 'English' or 'German' matches the system
+// language, aka the current locale
+function isSystemLanguage (language) {
+  var iso639 = require('iso-639-1')
+  var osLangISO = window.navigator.language.split('-')[0] // eg 'en'
+  var langIso = iso639.getCode(language) // eg 'de' if language is 'German'
+  return langIso === osLangISO
+}
+
+// Make sure we don't have two subtitle tracks with the same label
+// Labels each track by language, eg 'German', 'English', 'English 2', ...
+function relabelSubtitles (subtitles) {
+  var counts = {}
+  subtitles.tracks.forEach(function (track) {
+    var lang = track.language
+    counts[lang] = (counts[lang] || 0) + 1
+    track.label = counts[lang] > 1 ? (lang + ' ' + counts[lang]) : lang
+  })
+}

src/renderer/controllers/torrent-controller.js

@@ -0,0 +1,190 @@
+const path = require('path')
+const ipcRenderer = require('electron').ipcRenderer
+
+const TorrentSummary = require('../lib/torrent-summary')
+const TorrentPlayer = require('../lib/torrent-player')
+const sound = require('../lib/sound')
+const {dispatch} = require('../lib/dispatcher')
+
+module.exports = class TorrentController {
+  constructor (state) {
+    this.state = state
+  }
+
+  torrentInfoHash (torrentKey, infoHash) {
+    var torrentSummary = this.getTorrentSummary(torrentKey)
+    console.log('got infohash for %s torrent %s',
+      torrentSummary ? 'existing' : 'new', torrentKey)
+
+    if (!torrentSummary) {
+      var torrents = this.state.saved.torrents
+
+      // Check if an existing (non-active) torrent has the same info hash
+      if (torrents.find((t) => t.infoHash === infoHash)) {
+        ipcRenderer.send('wt-stop-torrenting', infoHash)
+        return dispatch('error', 'Cannot add duplicate torrent')
+      }
+
+      torrentSummary = {
+        torrentKey: torrentKey,
+        status: 'new'
+      }
+      torrents.unshift(torrentSummary)
+      sound.play('ADD')
+    }
+
+    torrentSummary.infoHash = infoHash
+    dispatch('update')
+  }
+
+  torrentWarning (torrentKey, message) {
+    console.log('warning for torrent %s: %s', torrentKey, message)
+  }
+
+  torrentError (torrentKey, message) {
+    // TODO: WebTorrent needs semantic errors
+    if (message.startsWith('Cannot add duplicate torrent')) {
+      // Remove infohash from the message
+      message = 'Cannot add duplicate torrent'
+    }
+    dispatch('error', message)
+
+    var torrentSummary = this.getTorrentSummary(torrentKey)
+    if (torrentSummary) {
+      console.log('Pausing torrent %s due to error: %s', torrentSummary.infoHash, message)
+      torrentSummary.status = 'paused'
+      dispatch('update')
+    }
+  }
+
+  torrentMetadata (torrentKey, torrentInfo) {
+    // Summarize torrent
+    var torrentSummary = this.getTorrentSummary(torrentKey)
+    torrentSummary.status = 'downloading'
+    torrentSummary.name = torrentSummary.displayName || torrentInfo.name
+    torrentSummary.path = torrentInfo.path
+    torrentSummary.magnetURI = torrentInfo.magnetURI
+    // TODO: make torrentInfo immutable, save separately as torrentSummary.info
+    // For now, check whether torrentSummary.files has already been set:
+    var hasDetailedFileInfo = torrentSummary.files && torrentSummary.files[0].path
+    if (!hasDetailedFileInfo) {
+      torrentSummary.files = torrentInfo.files
+    }
+    if (!torrentSummary.selections) {
+      torrentSummary.selections = torrentSummary.files.map((x) => true)
+    }
+    torrentSummary.defaultPlayFileIndex = TorrentPlayer.pickFileToPlay(torrentInfo.files)
+    dispatch('update')
+
+    // Save the .torrent file, if it hasn't been saved already
+    if (!torrentSummary.torrentFileName) ipcRenderer.send('wt-save-torrent-file', torrentKey)
+
+    // Auto-generate a poster image, if it hasn't been generated already
+    if (!torrentSummary.posterFileName) ipcRenderer.send('wt-generate-torrent-poster', torrentKey)
+  }
+
+  torrentDone (torrentKey, torrentInfo) {
+    // Update the torrent summary
+    var torrentSummary = this.getTorrentSummary(torrentKey)
+    torrentSummary.status = 'seeding'
+
+    // Notify the user that a torrent finished, but only if we actually DL'd at least part of it.
+    // Don't notify if we merely finished verifying data files that were already on disk.
+    if (torrentInfo.bytesReceived > 0) {
+      if (!this.state.window.isFocused) {
+        this.state.dock.badge += 1
+      }
+      showDoneNotification(torrentSummary)
+      ipcRenderer.send('downloadFinished', getTorrentPath(torrentSummary))
+    }
+
+    dispatch('update')
+  }
+
+  torrentProgress (progressInfo) {
+    // Overall progress across all active torrents, 0 to 1
+    var progress = progressInfo.progress
+    var hasActiveTorrents = progressInfo.hasActiveTorrents
+
+    // Hide progress bar when client has no torrents, or progress is 100%
+    // TODO: isn't this equivalent to: if (progress === 1) ?
+    if (!hasActiveTorrents || progress === 1) {
+      progress = -1
+    }
+
+    // Show progress bar under the WebTorrent taskbar icon, on OSX
+    this.state.dock.progress = progress
+
+    // Update progress for each individual torrent
+    progressInfo.torrents.forEach((p) => {
+      var torrentSummary = this.getTorrentSummary(p.torrentKey)
+      if (!torrentSummary) {
+        console.log('warning: got progress for missing torrent %s', p.torrentKey)
+        return
+      }
+      torrentSummary.progress = p
+    })
+
+    // TODO: Find an efficient way to re-enable this line, which allows subtitle
+    //       files which are completed after a video starts to play to be added
+    //       dynamically to the list of subtitles.
+    // checkForSubtitles()
+  }
+
+  torrentFileModtimes (torrentKey, fileModtimes) {
+    var torrentSummary = this.getTorrentSummary(torrentKey)
+    torrentSummary.fileModtimes = fileModtimes
+    dispatch('saveStateThrottled')
+  }
+
+  torrentFileSaved (torrentKey, torrentFileName) {
+    console.log('torrent file saved %s: %s', torrentKey, torrentFileName)
+    var torrentSummary = this.getTorrentSummary(torrentKey)
+    torrentSummary.torrentFileName = torrentFileName
+    dispatch('saveStateThrottled')
+  }
+
+  torrentPosterSaved (torrentKey, posterFileName) {
+    var torrentSummary = this.getTorrentSummary(torrentKey)
+    torrentSummary.posterFileName = posterFileName
+    dispatch('saveStateThrottled')
+  }
+
+  torrentAudioMetadata (infoHash, index, info) {
+    var torrentSummary = this.getTorrentSummary(infoHash)
+    var fileSummary = torrentSummary.files[index]
+    fileSummary.audioInfo = info
+    dispatch('update')
+  }
+
+  torrentServerRunning (serverInfo) {
+    this.state.server = serverInfo
+  }
+
+  // Gets a torrent summary {name, infoHash, status} from state.saved.torrents
+  // Returns undefined if we don't know that infoHash
+  getTorrentSummary (torrentKey) {
+    return TorrentSummary.getByKey(this.state, torrentKey)
+  }
+}
+
+function getTorrentPath (torrentSummary) {
+  var itemPath = TorrentSummary.getFileOrFolder(torrentSummary)
+  if (torrentSummary.files.length > 1) {
+    itemPath = path.dirname(itemPath)
+  }
+  return itemPath
+}
+
+function showDoneNotification (torrent) {
+  var notif = new window.Notification('Download Complete', {
+    body: torrent.name,
+    silent: true
+  })
+
+  notif.onClick = function () {
+    ipcRenderer.send('show')
+  }
+
+  sound.play('DONE')
+}

src/renderer/controllers/torrent-list-controller.js

@@ -0,0 +1,282 @@
+const fs = require('fs')
+const path = require('path')
+const electron = require('electron')
+
+const {dispatch} = require('../lib/dispatcher')
+const State = require('../lib/state')
+const sound = require('../lib/sound')
+const TorrentSummary = require('../lib/torrent-summary')
+
+const ipcRenderer = electron.ipcRenderer
+
+const instantIoRegex = /^(https:\/\/)?instant\.io\/#/
+
+// Controls the torrent list: creating, adding, deleting, & manipulating torrents
+module.exports = class TorrentListController {
+  constructor (state) {
+    this.state = state
+  }
+
+  // Adds a torrent to the list, starts downloading/seeding. TorrentID can be a
+  // magnet URI, infohash, or torrent file: https://github.com/feross/webtorrent#clientaddtorrentid-opts-function-ontorrent-torrent-
+  addTorrent (torrentId) {
+    if (torrentId.path) {
+      // Use path string instead of W3C File object
+      torrentId = torrentId.path
+    }
+    // Allow a instant.io link to be pasted
+    // TODO: remove this once support is added to webtorrent core
+    if (typeof torrentId === 'string' && instantIoRegex.test(torrentId)) {
+      torrentId = torrentId.slice(torrentId.indexOf('#') + 1)
+    }
+
+    var torrentKey = this.state.nextTorrentKey++
+    var path = this.state.saved.prefs.downloadPath
+
+    ipcRenderer.send('wt-start-torrenting', torrentKey, torrentId, path)
+
+    dispatch('backToList')
+  }
+
+  // Shows the Create Torrent page with options to seed a given file or folder
+  showCreateTorrent (files) {
+    // Files will either be an array of file objects, which we can send directly
+    // to the create-torrent screen
+    if (files.length === 0 || typeof files[0] !== 'string') {
+      this.state.location.go({
+        url: 'create-torrent',
+        files: files
+      })
+      return
+    }
+
+    // ... or it will be an array of mixed file and folder paths. We have to walk
+    // through all the folders and find the files
+    findFilesRecursive(files, (allFiles) => this.showCreateTorrent(allFiles))
+  }
+
+  // Switches between the advanced and simple Create Torrent UI
+  toggleCreateTorrentAdvanced () {
+    var info = this.state.location.current()
+    if (info.url !== 'create-torrent') return
+    info.showAdvanced = !info.showAdvanced
+  }
+
+  // Creates a new torrent and start seeeding
+  createTorrent (options) {
+    var state = this.state
+    var torrentKey = state.nextTorrentKey++
+    ipcRenderer.send('wt-create-torrent', torrentKey, options)
+    state.location.backToFirst(function () {
+      state.location.clearForward('create-torrent')
+    })
+  }
+
+  // Starts downloading and/or seeding a given torrentSummary.
+  startTorrentingSummary (torrentSummary) {
+    var s = torrentSummary
+
+    // Backward compatibility for config files save before we had torrentKey
+    if (!s.torrentKey) s.torrentKey = this.state.nextTorrentKey++
+
+    // Use Downloads folder by default
+    if (!s.path) s.path = this.state.saved.prefs.downloadPath
+
+    ipcRenderer.send('wt-start-torrenting',
+                      s.torrentKey,
+                      TorrentSummary.getTorrentID(s),
+                      s.path,
+                      s.fileModtimes,
+                      s.selections)
+  }
+
+  // TODO: use torrentKey, not infoHash
+  toggleTorrent (infoHash) {
+    var torrentSummary = TorrentSummary.getByKey(this.state, infoHash)
+    if (torrentSummary.status === 'paused') {
+      torrentSummary.status = 'new'
+      this.startTorrentingSummary(torrentSummary)
+      sound.play('ENABLE')
+    } else {
+      torrentSummary.status = 'paused'
+      ipcRenderer.send('wt-stop-torrenting', torrentSummary.infoHash)
+      sound.play('DISABLE')
+    }
+  }
+
+  toggleTorrentFile (infoHash, index) {
+    var torrentSummary = TorrentSummary.getByKey(this.state, infoHash)
+    torrentSummary.selections[index] = !torrentSummary.selections[index]
+
+    // Let the WebTorrent process know to start or stop fetching that file
+    ipcRenderer.send('wt-select-files', infoHash, torrentSummary.selections)
+  }
+
+  confirmDeleteTorrent (infoHash, deleteData) {
+    this.state.modal = {
+      id: 'remove-torrent-modal',
+      infoHash,
+      deleteData
+    }
+  }
+
+  // TODO: use torrentKey, not infoHash
+  deleteTorrent (infoHash, deleteData) {
+    ipcRenderer.send('wt-stop-torrenting', infoHash)
+
+    var index = this.state.saved.torrents.findIndex((x) => x.infoHash === infoHash)
+
+    if (index > -1) {
+      var summary = this.state.saved.torrents[index]
+
+      // remove torrent and poster file
+      deleteFile(TorrentSummary.getTorrentPath(summary))
+      deleteFile(TorrentSummary.getPosterPath(summary)) // TODO: will the css path hack affect windows?
+
+      // optionally delete the torrent data
+      if (deleteData) moveItemToTrash(summary)
+
+      // remove torrent from saved list
+      this.state.saved.torrents.splice(index, 1)
+      State.saveThrottled(this.state)
+    }
+
+    this.state.location.clearForward('player') // prevent user from going forward to a deleted torrent
+    sound.play('DELETE')
+  }
+
+  toggleSelectTorrent (infoHash) {
+    if (this.state.selectedInfoHash === infoHash) {
+      this.state.selectedInfoHash = null
+    } else {
+      this.state.selectedInfoHash = infoHash
+    }
+  }
+
+  openTorrentContextMenu (infoHash) {
+    var torrentSummary = TorrentSummary.getByKey(this.state, infoHash)
+    var menu = new electron.remote.Menu()
+
+    menu.append(new electron.remote.MenuItem({
+      label: 'Remove From List',
+      click: () => dispatch('confirmDeleteTorrent', torrentSummary.infoHash, false)
+    }))
+
+    menu.append(new electron.remote.MenuItem({
+      label: 'Remove Data File',
+      click: () => dispatch('confirmDeleteTorrent', torrentSummary.infoHash, true)
+    }))
+
+    menu.append(new electron.remote.MenuItem({
+      type: 'separator'
+    }))
+
+    if (torrentSummary.files) {
+      menu.append(new electron.remote.MenuItem({
+        label: process.platform === 'darwin' ? 'Show in Finder' : 'Show in Folder',
+        click: () => showItemInFolder(torrentSummary)
+      }))
+      menu.append(new electron.remote.MenuItem({
+        type: 'separator'
+      }))
+    }
+
+    menu.append(new electron.remote.MenuItem({
+      label: 'Copy Magnet Link to Clipboard',
+      click: () => electron.clipboard.writeText(torrentSummary.magnetURI)
+    }))
+
+    menu.append(new electron.remote.MenuItem({
+      label: 'Copy Instant.io Link to Clipboard',
+      click: () => electron.clipboard.writeText(`https://instant.io/#${torrentSummary.infoHash}`)
+    }))
+
+    menu.append(new electron.remote.MenuItem({
+      label: 'Save Torrent File As...',
+      click: () => saveTorrentFileAs(torrentSummary)
+    }))
+
+    menu.popup(electron.remote.getCurrentWindow())
+  }
+}
+
+// Recursively finds {name, path, size} for all files in a folder
+// Calls `cb` on success, calls `onError` on failure
+function findFilesRecursive (paths, cb) {
+  if (paths.length > 1) {
+    var numComplete = 0
+    var ret = []
+    paths.forEach(function (path) {
+      findFilesRecursive([path], function (fileObjs) {
+        ret = ret.concat(fileObjs)
+        if (++numComplete === paths.length) {
+          ret.sort((a, b) => a.path < b.path ? -1 : a.path > b.path)
+          cb(ret)
+        }
+      })
+    })
+    return
+  }
+
+  var fileOrFolder = paths[0]
+  fs.stat(fileOrFolder, function (err, stat) {
+    if (err) return dispatch('error', err)
+
+    // Files: return name, path, and size
+    if (!stat.isDirectory()) {
+      var filePath = fileOrFolder
+      return cb([{
+        name: path.basename(filePath),
+        path: filePath,
+        size: stat.size
+      }])
+    }
+
+    // Folders: recurse, make a list of all the files
+    var folderPath = fileOrFolder
+    fs.readdir(folderPath, function (err, fileNames) {
+      if (err) return dispatch('error', err)
+      var paths = fileNames.map((fileName) => path.join(folderPath, fileName))
+      findFilesRecursive(paths, cb)
+    })
+  })
+}
+
+function deleteFile (path) {
+  if (!path) return
+  fs.unlink(path, function (err) {
+    if (err) dispatch('error', err)
+  })
+}
+
+// Delete all files in a torrent
+function moveItemToTrash (torrentSummary) {
+  var filePath = TorrentSummary.getFileOrFolder(torrentSummary)
+  ipcRenderer.send('moveItemToTrash', filePath)
+}
+
+function showItemInFolder (torrentSummary) {
+  ipcRenderer.send('showItemInFolder', TorrentSummary.getFileOrFolder(torrentSummary))
+}
+
+function saveTorrentFileAs (torrentSummary) {
+  var downloadPath = this.state.saved.prefs.downloadPath
+  var newFileName = path.parse(torrentSummary.name).name + '.torrent'
+  var opts = {
+    title: 'Save Torrent File',
+    defaultPath: path.join(downloadPath, newFileName),
+    filters: [
+      { name: 'Torrent Files', extensions: ['torrent'] },
+      { name: 'All Files', extensions: ['*'] }
+    ]
+  }
+  electron.remote.dialog.showSaveDialog(electron.remote.getCurrentWindow(), opts, function (savePath) {
+    var torrentPath = TorrentSummary.getTorrentPath(torrentSummary)
+    fs.readFile(torrentPath, function (err, torrentFile) {
+      if (err) return dispatch('error', err)
+      fs.writeFile(savePath, torrentFile, function (err) {
+        if (err) return dispatch('error', err)
+      })
+    })
+  })
+}

src/renderer/controllers/update-controller.js

@@ -0,0 +1,26 @@
+const State = require('../lib/state')
+
+// Controls the UI checking for new versions of the app, prompting install
+module.exports = class UpdateController {
+  constructor (state) {
+    this.state = state
+  }
+
+  // Shows a modal saying that we have an update
+  updateAvailable (version) {
+    var skipped = this.state.saved.skippedVersions
+    if (skipped && skipped.includes(version)) {
+      console.log('new version skipped by user: v' + version)
+      return
+    }
+    this.state.modal = { id: 'update-available-modal', version: version }
+  }
+
+  // Don't show the modal again until the next version
+  skipVersion (version) {
+    var skipped = this.state.saved.skippedVersions
+    if (!skipped) skipped = this.state.saved.skippedVersions = []
+    skipped.push(version)
+    State.saveThrottled(this.state)
+  }
+}

src/renderer/lib/cast.js

@@ -3,8 +3,9 @@
 // * Starts and stops casting, provides remote video controls
 module.exports = {
   init,
-  open,
-  close,
+  toggleMenu,
+  selectDevice,
+  stop,
   play,
   pause,
   seek,
@@ -12,9 +13,8 @@ module.exports = {
   setRate
 }
 
-var airplayer = require('airplayer')()
-var chromecasts = require('chromecasts')()
-var dlnacasts = require('dlnacasts')()
+// Lazy load these for a ~300ms improvement in startup time
+var airplayer, chromecasts, dlnacasts
 
 var config = require('../../config')
 
@@ -32,24 +32,54 @@ function init (appState, callback) {
   state = appState
   update = callback
 
+  // Load modules, scan the network for devices
+  airplayer = require('airplayer')()
+  chromecasts = require('chromecasts')()
+  dlnacasts = require('dlnacasts')()
+
+  state.devices.chromecast = chromecastPlayer()
+  state.devices.dlna = dlnaPlayer()
+  state.devices.airplay = airplayPlayer()
+
   // Listen for devices: Chromecast, DLNA and Airplay
-  chromecasts.on('update', function (player) {
-    state.devices.chromecast = chromecastPlayer(player)
+  chromecasts.on('update', function (device) {
+    // TODO: how do we tell if there are *no longer* any Chromecasts available?
+    // From looking at the code, chromecasts.players only grows, never shrinks
+    state.devices.chromecast.addDevice(device)
   })
 
-  dlnacasts.on('update', function (player) {
-    state.devices.dlna = dlnaPlayer(player)
+  dlnacasts.on('update', function (device) {
+    state.devices.dlna.addDevice(device)
   })
 
-  airplayer.on('update', function (player) {
-    state.devices.airplay = airplayPlayer(player)
+  airplayer.on('update', function (device) {
+    state.devices.airplay.addDevice(device)
   })
 }
 
 // chromecast player implementation
-function chromecastPlayer (player) {
-  function addEvents () {
-    player.on('error', function (err) {
+function chromecastPlayer () {
+  var ret = {
+    device: null,
+    addDevice,
+    getDevices,
+    open,
+    play,
+    pause,
+    stop,
+    status,
+    seek,
+    volume
+  }
+  return ret
+
+  function getDevices () {
+    return chromecasts.players
+  }
+
+  function addDevice (device) {
+    device.on('error', function (err) {
+      if (device !== ret.device) return
       state.playing.location = 'local'
       state.errors.push({
         time: new Date().getTime(),
@@ -57,7 +87,8 @@ function chromecastPlayer (player) {
       })
       update()
     })
-    player.on('disconnect', function () {
+    device.on('disconnect', function () {
+      if (device !== ret.device) return
       state.playing.location = 'local'
       update()
     })
@@ -65,7 +96,7 @@ function chromecastPlayer (player) {
 
   function open () {
     var torrentSummary = state.saved.torrents.find((x) => x.infoHash === state.playing.infoHash)
-    player.play(state.server.networkURL, {
+    ret.device.play(state.server.networkURL, {
       type: 'video/mp4',
       title: config.APP_NAME + ' - ' + torrentSummary.name
     }, function (err) {
@@ -83,19 +114,19 @@ function chromecastPlayer (player) {
   }
 
   function play (callback) {
-    player.play(null, null, callback)
+    ret.device.play(null, null, callback)
   }
 
   function pause (callback) {
-    player.pause(callback)
+    ret.device.pause(callback)
   }
 
   function stop (callback) {
-    player.stop(callback)
+    ret.device.stop(callback)
   }
 
   function status () {
-    player.status(function (err, status) {
+    ret.device.status(function (err, status) {
       if (err) return console.log('error getting %s status: %o', state.playing.location, err)
       state.playing.isPaused = status.playerState === 'PAUSED'
       state.playing.currentTime = status.currentTime
@@ -105,30 +136,31 @@ function chromecastPlayer (player) {
   }
 
   function seek (time, callback) {
-    player.seek(time, callback)
+    ret.device.seek(time, callback)
   }
 
   function volume (volume, callback) {
-    player.volume(volume, callback)
-  }
-
-  addEvents()
-
-  return {
-    player: player,
-    open: open,
-    play: play,
-    pause: pause,
-    stop: stop,
-    status: status,
-    seek: seek,
-    volume: volume
+    ret.device.volume(volume, callback)
   }
 }
 
 // airplay player implementation
-function airplayPlayer (player) {
-  function addEvents () {
+function airplayPlayer () {
+  var ret = {
+    device: null,
+    addDevice,
+    getDevices,
+    open,
+    play,
+    pause,
+    stop,
+    status,
+    seek,
+    volume
+  }
+  return ret
+
+  function addDevice (player) {
     player.on('event', function (event) {
       switch (event.state) {
         case 'loading':
@@ -146,8 +178,12 @@ function airplayPlayer (player) {
     })
   }
 
+  function getDevices () {
+    return airplayer.players
+  }
+
   function open () {
-    player.play(state.server.networkURL, function (err, res) {
+    ret.device.play(state.server.networkURL, function (err, res) {
       if (err) {
         state.playing.location = 'local'
         state.errors.push({
@@ -162,19 +198,19 @@ function airplayPlayer (player) {
   }
 
   function play (callback) {
-    player.resume(callback)
+    ret.device.resume(callback)
   }
 
   function pause (callback) {
-    player.pause(callback)
+    ret.device.pause(callback)
   }
 
   function stop (callback) {
-    player.stop(callback)
+    ret.device.stop(callback)
   }
 
   function status () {
-    player.playbackInfo(function (err, res, status) {
+    ret.device.playbackInfo(function (err, res, status) {
       if (err) {
         state.playing.location = 'local'
         state.errors.push({
@@ -190,7 +226,7 @@ function airplayPlayer (player) {
   }
 
   function seek (time, callback) {
-    player.scrub(time, callback)
+    ret.device.scrub(time, callback)
   }
 
   function volume (volume, callback) {
@@ -198,25 +234,31 @@ function airplayPlayer (player) {
     // TODO: We should just disable the volume slider
     state.playing.volume = volume
   }
-
-  addEvents()
-
-  return {
-    player: player,
-    open: open,
-    play: play,
-    pause: pause,
-    stop: stop,
-    status: status,
-    seek: seek,
-    volume: volume
-  }
 }
 
 // DLNA player implementation
 function dlnaPlayer (player) {
-  function addEvents () {
-    player.on('error', function (err) {
+  var ret = {
+    device: null,
+    addDevice,
+    getDevices,
+    open,
+    play,
+    pause,
+    stop,
+    status,
+    seek,
+    volume
+  }
+  return ret
+
+  function getDevices () {
+    return dlnacasts.players
+  }
+
+  function addDevice (device) {
+    device.on('error', function (err) {
+      if (device !== ret.device) return
       state.playing.location = 'local'
       state.errors.push({
         time: new Date().getTime(),
@@ -224,7 +266,8 @@ function dlnaPlayer (player) {
       })
       update()
     })
-    player.on('disconnect', function () {
+    device.on('disconnect', function () {
+      if (device !== ret.device) return
       state.playing.location = 'local'
       update()
     })
@@ -232,7 +275,7 @@ function dlnaPlayer (player) {
 
   function open () {
     var torrentSummary = state.saved.torrents.find((x) => x.infoHash === state.playing.infoHash)
-    player.play(state.server.networkURL, {
+    ret.device.play(state.server.networkURL, {
       type: 'video/mp4',
       title: config.APP_NAME + ' - ' + torrentSummary.name,
       seek: state.playing.currentTime > 10 ? state.playing.currentTime : 0
@@ -251,19 +294,19 @@ function dlnaPlayer (player) {
   }
 
   function play (callback) {
-    player.play(null, null, callback)
+    ret.device.play(null, null, callback)
   }
 
   function pause (callback) {
-    player.pause(callback)
+    ret.device.pause(callback)
   }
 
   function stop (callback) {
-    player.stop(callback)
+    ret.device.stop(callback)
   }
 
   function status () {
-    player.status(function (err, status) {
+    ret.device.status(function (err, status) {
       if (err) return console.log('error getting %s status: %o', state.playing.location, err)
       state.playing.isPaused = status.playerState === 'PAUSED'
       state.playing.currentTime = status.currentTime
@@ -273,61 +316,78 @@ function dlnaPlayer (player) {
   }
 
   function seek (time, callback) {
-    player.seek(time, callback)
+    ret.device.seek(time, callback)
   }
 
   function volume (volume, callback) {
-    player.volume(volume, function (err) {
+    ret.device.volume(volume, function (err) {
       // quick volume update
       state.playing.volume = volume
       callback(err)
     })
   }
-
-  addEvents()
-
-  return {
-    player: player,
-    open: open,
-    play: play,
-    pause: pause,
-    stop: stop,
-    status: status,
-    seek: seek,
-    volume: volume
-  }
 }
 
 // Start polling cast device state, whenever we're connected
 function startStatusInterval () {
   statusInterval = setInterval(function () {
-    var device = getDevice()
-    if (device) {
-      device.status()
-    }
+    var player = getPlayer()
+    if (player) player.status()
   }, 1000)
 }
 
-function open (location) {
+/*
+ * Shows the device menu for a given cast type ('chromecast', 'airplay', etc)
+ * The menu lists eg. all Chromecasts detected; the user can click one to cast.
+ * If the menu was already showing for that type, hides the menu.
+ */
+function toggleMenu (location) {
+  // If the menu is already showing, hide it
+  if (state.devices.castMenu && state.devices.castMenu.location === location) {
+    state.devices.castMenu = null
+    return
+  }
+
+  // Never cast to two devices at the same time
   if (state.playing.location !== 'local') {
     throw new Error('You can\'t connect to ' + location + ' when already connected to another device')
   }
 
-  state.playing.location = location + '-pending'
-  var device = getDevice(location)
-  if (device) {
-    getDevice(location).open()
-    startStatusInterval()
-  }
+  // Find all cast devices of the given type
+  var player = getPlayer(location)
+  var devices = player ? player.getDevices() : []
+  if (devices.length === 0) throw new Error('No ' + location + ' devices available')
 
+  // Show a menu
+  state.devices.castMenu = {location, devices}
+}
+
+function selectDevice (index) {
+  var {location, devices} = state.devices.castMenu
+
+  // Start casting
+  var player = getPlayer(location)
+  player.device = devices[index]
+  player.open()
+
+  // Poll the casting device's status every few seconds
+  startStatusInterval()
+
+  // Show the Connecting... screen
+  state.devices.castMenu = null
+  state.playing.castName = devices[index].name
+  state.playing.location = location + '-pending'
   update()
 }
 
 // Stops casting, move video back to local screen
-function close () {
-  var device = getDevice()
-  if (device) {
-    device.stop(stoppedCasting)
+function stop () {
+  var player = getPlayer()
+  if (player) {
+    player.stop(function () {
+      player.device = null
+      stoppedCasting()
+    })
     clearInterval(statusInterval)
   } else {
     stoppedCasting()
@@ -340,8 +400,8 @@ function stoppedCasting () {
   update()
 }
 
-function getDevice (location) {
-  if (location && state.devices[location]) {
+function getPlayer (location) {
+  if (location) {
     return state.devices[location]
   } else if (state.playing.location === 'chromecast') {
     return state.devices.chromecast
@@ -355,29 +415,25 @@ function getDevice (location) {
 }
 
 function play () {
-  var device = getDevice()
-  if (device) {
-    device.play(castCallback)
-  }
+  var player = getPlayer()
+  if (player) player.play(castCallback)
 }
 
 function pause () {
-  var device = getDevice()
-  if (device) {
-    device.pause(castCallback)
-  }
+  var player = getPlayer()
+  if (player) player.pause(castCallback)
 }
 
 function setRate (rate) {
-  var device
+  var player
   var result = true
   if (state.playing.location === 'chromecast') {
     // TODO find how to control playback rate on chromecast
     castCallback()
     result = false
   } else if (state.playing.location === 'airplay') {
-    device = state.devices.airplay
-    device.rate(rate, castCallback)
+    player = state.devices.airplay
+    player.rate(rate, castCallback)
   } else {
     result = false
   }
@@ -385,17 +441,13 @@ function setRate (rate) {
 }
 
 function seek (time) {
-  var device = getDevice()
-  if (device) {
-    device.seek(time, castCallback)
-  }
+  var player = getPlayer()
+  if (player) player.seek(time, castCallback)
 }
 
 function setVolume (volume) {
-  var device = getDevice()
-  if (device) {
-    device.volume(volume, castCallback)
-  }
+  var player = getPlayer()
+  if (player) player.volume(volume, castCallback)
 }
 
 function castCallback () {

src/renderer/lib/dispatcher.js

@@ -17,7 +17,7 @@ function dispatch (...args) {
 
 // Most DOM event handlers are trivial functions like `() => dispatch(<args>)`.
 // For these, `dispatcher(<args>)` is preferred because it memoizes the handler
-// function. This prevents virtual-dom from updating the listener functions on
+// function. This prevents React from updating the listener functions on
 // each update().
 function dispatcher (...args) {
   var str = JSON.stringify(args)

src/renderer/lib/migrations.js

@@ -10,7 +10,7 @@ var config = require('../../config')
 // Change `state.saved` (which will be saved back to config.json on exit) as
 // needed, for example to deal with config.json format changes across versions
 function run (state) {
-  // Replace "{ version: 1 }" with app version (semver)
+  // Replace '{ version: 1 }' with app version (semver)
   if (!semver.valid(state.saved.version)) {
     state.saved.version = '0.0.0' // Pre-0.7.0 version, so run all migrations
   }
@@ -18,25 +18,24 @@ function run (state) {
   var version = state.saved.version
 
   if (semver.lt(version, '0.7.0')) {
-    migrate_0_7_0(state)
+    migrate_0_7_0(state.saved)
   }
 
-  // Future migrations...
-  // if (semver.lt(version, '0.8.0')) {
-  //   migrate_0_8_0(state)
-  // }
+  if (semver.lt(version, '0.7.2')) {
+    migrate_0_7_2(state.saved)
+  }
 
   // Config is now on the new version
   state.saved.version = config.APP_VERSION
 }
 
-function migrate_0_7_0 (state) {
+function migrate_0_7_0 (saved) {
   console.log('migrate to 0.7.0')
 
   var fs = require('fs-extra')
   var path = require('path')
 
-  state.saved.torrents.forEach(function (ts) {
+  saved.torrents.forEach(function (ts) {
     var infoHash = ts.infoHash
 
     // Replace torrentPath with torrentFileName
@@ -86,3 +85,11 @@ function migrate_0_7_0 (state) {
     delete ts.fileModtimes
   })
 }
+
+function migrate_0_7_2 (saved) {
+  if (!saved.prefs) {
+    saved.prefs = {
+      downloadPath: config.DEFAULT_DOWNLOAD_PATH
+    }
+  }
+}

src/renderer/lib/state.js

@@ -1,19 +1,21 @@
-module.exports = {
-  getDefaultPlayState,
-  load,
-  save
-}
-
 var appConfig = require('application-config')('WebTorrent')
 var path = require('path')
+var {EventEmitter} = require('events')
 
 var config = require('../../config')
 var migrations = require('./migrations')
 
+var State = module.exports = Object.assign(new EventEmitter(), {
+  getDefaultPlayState,
+  load,
+  save,
+  saveThrottled
+})
+
 appConfig.filePath = path.join(config.CONFIG_PATH, 'config.json')
 
 function getDefaultState () {
-  var LocationHistory = require('./location-history')
+  var LocationHistory = require('location-history')
 
   return {
     /*
@@ -32,10 +34,7 @@ function getDefaultState () {
     },
     selectedInfoHash: null, /* the torrent we've selected to view details. see state.torrents */
     playing: getDefaultPlayState(), /* the media (audio or video) that we're currently playing */
-    devices: { /* playback devices like Chromecast and AppleTV */
-      airplay: null, /* airplay client. finds and manages AppleTVs */
-      chromecast: null /* chromecast client. finds and manages Chromecasts */
-    },
+    devices: {}, /* playback devices like Chromecast and AppleTV */
     dock: {
       badge: 0,
       progress: 0
@@ -51,7 +50,7 @@ function getDefaultState () {
      *
      * Config path:
      *
-     * OS X                 ~/Library/Application Support/WebTorrent/config.json
+     * Mac                  ~/Library/Application Support/WebTorrent/config.json
      * Linux (XDG)          $XDG_CONFIG_HOME/WebTorrent/config.json
      * Linux (Legacy)       ~/.config/WebTorrent/config.json
      * Windows (> Vista)    %LOCALAPPDATA%/WebTorrent/config.json
@@ -83,6 +82,7 @@ function getDefaultPlayState () {
     lastTimeUpdate: 0, /* Unix time in ms */
     mouseStationarySince: 0, /* Unix time in ms */
     playbackRate: 1,
+    volume: 1,
     subtitles: {
       tracks: [], /* subtitle tracks, each {label, language, ...} */
       selectedIndex: -1, /* current subtitle track */
@@ -100,9 +100,7 @@ function setupSavedState (cb) {
 
   var saved = {
     prefs: {
-      downloadPath: config.IS_PORTABLE
-        ? path.join(config.CONFIG_PATH, 'Downloads')
-        : config.DEFAULT_DOWNLOAD_PATH
+      downloadPath: config.DEFAULT_DOWNLOAD_PATH
     },
     torrents: config.DEFAULT_TORRENTS.map(createTorrentObject),
     version: config.APP_VERSION /* make sure we can upgrade gracefully later */
@@ -185,8 +183,7 @@ function load (cb) {
 // Write state.saved to the JSON state file
 function save (state, cb) {
   console.log('Saving state to ' + appConfig.filePath)
-
-  var electron = require('electron')
+  delete state.saveStateTimeout
 
   // Clean up, so that we're not saving any pending state
   var copy = Object.assign({}, state.saved)
@@ -208,10 +205,17 @@ function save (state, cb) {
       return torrent
     })
 
-  appConfig.write(copy, function (err) {
+  appConfig.write(copy, (err) => {
     if (err) console.error(err)
-
-    // TODO: this doesn't belong here
-    electron.ipcRenderer.send('savedState')
+    else State.emit('savedState')
   })
 }
+
+// Write, but no more than once a second
+function saveThrottled (state) {
+  if (state.saveStateTimeout) return
+  state.saveStateTimeout = setTimeout(function () {
+    if (!state.saveStateTimeout) return
+    save(state)
+  }, 1000)
+}

src/renderer/lib/telemetry.js

@@ -0,0 +1,152 @@
+// Collects anonymous usage stats and uncaught errors
+// Reports back so that we can improve WebTorrent Desktop
+module.exports = {
+  init,
+  logUncaughtError,
+  logPlayAttempt
+}
+
+const crypto = require('crypto')
+const electron = require('electron')
+const https = require('https')
+const os = require('os')
+const url = require('url')
+
+const config = require('../../config')
+
+var telemetry
+
+function init (state) {
+  telemetry = state.saved.telemetry
+  if (!telemetry) {
+    telemetry = state.saved.telemetry = createSummary()
+    reset()
+  }
+
+  var now = new Date()
+  telemetry.timestamp = now.toISOString()
+  telemetry.localTime = now.toTimeString()
+  telemetry.screens = getScreenInfo()
+  telemetry.system = getSystemInfo()
+  telemetry.approxNumTorrents = getApproxNumTorrents(state)
+
+  if (config.IS_PRODUCTION) {
+    postToServer()
+  } else {
+    // Development: telemetry used only for local debugging
+    // Empty uncaught errors, etc at the start of every run
+    reset()
+  }
+}
+
+function reset () {
+  telemetry.uncaughtErrors = []
+  telemetry.playAttempts = {
+    total: 0,
+    success: 0,
+    timeout: 0,
+    error: 0,
+    abandoned: 0
+  }
+}
+
+function postToServer () {
+  // Serialize the telemetry summary
+  var payload = new Buffer(JSON.stringify(telemetry), 'utf8')
+
+  // POST to our server
+  var options = url.parse(config.TELEMETRY_URL)
+  options.method = 'POST'
+  options.headers = {
+    'Content-Type': 'application/json',
+    'Content-Length': payload.length
+  }
+
+  var req = https.request(options, function (res) {
+    if (res.statusCode === 200) {
+      console.log('Successfully posted telemetry summary')
+      reset()
+    } else {
+      console.error('Couldn\'t post telemetry summary, got HTTP ' + res.statusCode)
+    }
+  })
+  req.on('error', function (e) {
+    console.error('Couldn\'t post telemetry summary', e)
+  })
+  req.write(payload)
+  req.end()
+}
+
+// Creates a new telemetry summary. Gives the user a unique ID,
+// collects screen resolution, etc
+function createSummary () {
+  // Make a 256-bit random unique ID
+  var userID = crypto.randomBytes(32).toString('hex')
+  return { userID }
+}
+
+// Track screen resolution
+function getScreenInfo () {
+  return electron.screen.getAllDisplays().map((screen) => ({
+    width: screen.size.width,
+    height: screen.size.height,
+    scaleFactor: screen.scaleFactor
+  }))
+}
+
+// Track basic system info like OS version and amount of RAM
+function getSystemInfo () {
+  return {
+    osPlatform: process.platform,
+    osRelease: os.type() + ' ' + os.release(),
+    architecture: os.arch(),
+    totalMemoryMB: os.totalmem() / (1 << 20),
+    numCores: os.cpus().length
+  }
+}
+
+// Get the number of torrents, rounded to the nearest power of two
+function getApproxNumTorrents (state) {
+  var exactNum = state.saved.torrents.length
+  if (exactNum === 0) return 0
+  // Otherwise, return 1, 2, 4, 8, etc by rounding in log space
+  var log2 = Math.log(exactNum) / Math.log(2)
+  return 1 << Math.round(log2)
+}
+
+// An uncaught error happened in the main process or in one of the windows
+function logUncaughtError (procName, err) {
+  console.error('uncaught error', procName, err)
+
+  // Not initialized yet? Ignore.
+  // Hopefully uncaught errors immediately on startup are fixed in dev
+  if (!telemetry) return
+
+  var message, stack
+  if (err instanceof Error) {
+    message = err.message
+    stack = err.stack
+  } else {
+    message = String(err)
+    stack = ''
+  }
+
+  // We need to POST the telemetry object, make sure it stays < 100kb
+  if (telemetry.uncaughtErrors.length > 20) return
+  if (message.length > 1000) message = message.substring(0, 1000)
+  if (stack.length > 1000) stack = stack.substring(0, 1000)
+
+  telemetry.uncaughtErrors.push({process: procName, message, stack})
+}
+
+// The user pressed play. It either worked, timed out, or showed the
+// 'Play in VLC' codec error
+function logPlayAttempt (result) {
+  if (!['success', 'timeout', 'error', 'abandoned'].includes(result)) {
+    return console.error('Unknown play attempt result', result)
+  }
+
+  var attempts = telemetry.playAttempts
+  attempts.total = (attempts.total || 0) + 1
+  attempts[result] = (attempts[result] || 0) + 1
+}

src/renderer/lib/torrent-player.js

@@ -0,0 +1,83 @@
+module.exports = {
+  isPlayable,
+  isVideo,
+  isAudio,
+  isTorrent,
+  isPlayableTorrentSummary,
+  pickFileToPlay
+}
+
+var path = require('path')
+
+// Checks whether a fileSummary or file path is audio/video that we can play,
+// based on the file extension
+function isPlayable (file) {
+  return isVideo(file) || isAudio(file)
+}
+
+// Checks whether a fileSummary or file path is playable video
+function isVideo (file) {
+  return [
+    '.avi',
+    '.m4v',
+    '.mkv',
+    '.mov',
+    '.mp4',
+    '.mpg',
+    '.ogv',
+    '.webm',
+    '.wmv'
+  ].includes(getFileExtension(file))
+}
+
+// Checks whether a fileSummary or file path is playable audio
+function isAudio (file) {
+  return [
+    '.aac',
+    '.ac3',
+    '.mp3',
+    '.ogg',
+    '.wav'
+  ].includes(getFileExtension(file))
+}
+
+// Checks if the argument is either:
+// - a string that's a valid filename ending in .torrent
+// - a file object where obj.name is ends in .torrent
+// - a string that's a magnet link (magnet://...)
+function isTorrent (file) {
+  var isTorrentFile = getFileExtension(file) === '.torrent'
+  var isMagnet = typeof file === 'string' && /^(stream-)?magnet:/.test(file)
+  return isTorrentFile || isMagnet
+}
+
+function getFileExtension (file) {
+  var name = typeof file === 'string' ? file : file.name
+  return path.extname(name).toLowerCase()
+}
+
+function isPlayableTorrentSummary (torrentSummary) {
+  return torrentSummary.files && torrentSummary.files.some(isPlayable)
+}
+
+// Picks the default file to play from a list of torrent or torrentSummary files
+// Returns an index or undefined, if no files are playable
+function pickFileToPlay (files) {
+  // first, try to find the biggest video file
+  var videoFiles = files.filter(isVideo)
+  if (videoFiles.length > 0) {
+    var largestVideoFile = videoFiles.reduce(function (a, b) {
+      return a.length > b.length ? a : b
+    })
+    return files.indexOf(largestVideoFile)
+  }
+
+  // if there are no videos, play the first audio file
+  var audioFiles = files.filter(isAudio)
+  if (audioFiles.length > 0) {
+    return files.indexOf(audioFiles[0])
+  }
+
+  // no video or audio means nothing is playable
+  return undefined
+}

src/renderer/lib/torrent-poster.js

@@ -16,7 +16,7 @@ function torrentPoster (torrent, cb) {
   if (videoFile) return torrentPosterFromVideo(videoFile, torrent, cb)
 
   // Third, try to use the largest image file
-  var imgFile = getLargestFileByExtension(torrent, ['.gif', '.jpg', '.png'])
+  var imgFile = getLargestFileByExtension(torrent, ['.gif', '.jpg', '.jpeg', '.png'])
   if (imgFile) return torrentPosterFromImage(imgFile, torrent, cb)
 
   // TODO: generate a waveform from the largest sound file

src/renderer/lib/torrent-summary.js

@@ -0,0 +1,56 @@
+module.exports = {
+  getPosterPath,
+  getTorrentPath,
+  getByKey,
+  getTorrentID,
+  getFileOrFolder
+}
+
+var path = require('path')
+var config = require('../../config')
+
+// Expects a torrentSummary
+// Returns an absolute path to the torrent file, or null if unavailable
+function getTorrentPath (torrentSummary) {
+  if (!torrentSummary || !torrentSummary.torrentFileName) return null
+  return path.join(config.TORRENT_PATH, torrentSummary.torrentFileName)
+}
+
+// Expects a torrentSummary
+// Returns an absolute path to the poster image, or null if unavailable
+function getPosterPath (torrentSummary) {
+  if (!torrentSummary || !torrentSummary.posterFileName) return null
+  var posterPath = path.join(config.POSTER_PATH, torrentSummary.posterFileName)
+  // Work around a Chrome bug (reproduced in vanilla Chrome, not just Electron):
+  // Backslashes in URLS in CSS cause bizarre string encoding issues
+  return posterPath.replace(/\\/g, '/')
+}
+
+// Expects a torrentSummary
+// Returns a torrentID: filename, magnet URI, or infohash
+function getTorrentID (torrentSummary) {
+  var s = torrentSummary
+  if (s.torrentFileName) { // Load torrent file from disk
+    return getTorrentPath(s)
+  } else { // Load torrent from DHT
+    return s.magnetURI || s.infoHash
+  }
+}
+
+// Expects a torrentKey or infoHash
+// Returns the corresponding torrentSummary, or undefined
+function getByKey (state, torrentKey) {
+  if (!torrentKey) return undefined
+  return state.saved.torrents.find((x) =>
+    x.torrentKey === torrentKey || x.infoHash === torrentKey)
+}
+
+// Returns the path to either the file (in a single-file torrent) or the root
+// folder (in  multi-file torrent)
+// WARNING: assumes that multi-file torrents consist of a SINGLE folder.
+// TODO: make this assumption explicit, enforce it in the `create-torrent`
+// module. Store root folder explicitly to avoid hacky path processing below.
+function getFileOrFolder (torrentSummary) {
+  var ts = torrentSummary
+  return path.join(ts.path, ts.files[0].path.split('/')[0])
+}

src/renderer/main.js

@@ -0,0 +1,434 @@
+console.time('init')
+
+const crashReporter = require('../crash-reporter')
+crashReporter.init()
+
+const dragDrop = require('drag-drop')
+const electron = require('electron')
+const React = require('react')
+const ReactDOM = require('react-dom')
+
+const config = require('../config')
+const App = require('./views/app')
+const telemetry = require('./lib/telemetry')
+const sound = require('./lib/sound')
+const State = require('./lib/state')
+const TorrentPlayer = require('./lib/torrent-player')
+
+const MediaController = require('./controllers/media-controller')
+const UpdateController = require('./controllers/update-controller')
+const PrefsController = require('./controllers/prefs-controller')
+const PlaybackController = require('./controllers/playback-controller')
+const SubtitlesController = require('./controllers/subtitles-controller')
+const TorrentListController = require('./controllers/torrent-list-controller')
+const TorrentController = require('./controllers/torrent-controller')
+
+// Yo-yo pattern: state object lives here and percolates down thru all the views.
+// Events come back up from the views via dispatch(...)
+require('./lib/dispatcher').setDispatch(dispatch)
+
+// From dispatch(...), events are sent to one of the controllers
+var controllers = null
+
+// This dependency is the slowest-loading, so we lazy load it
+var Cast = null
+
+// Electron apps have two processes: a main process (node) runs first and starts
+// a renderer process (essentially a Chrome window). We're in the renderer process,
+// and this IPC channel receives from and sends messages to the main process
+var ipcRenderer = electron.ipcRenderer
+
+// All state lives in state.js. `state.saved` is read from and written to a file.
+// All other state is ephemeral. First we load state.saved then initialize the app.
+var state
+
+// Root React component
+var app
+
+State.load(onState)
+
+// Called once when the application loads. (Not once per window.)
+// Connects to the torrent networks, sets up the UI and OS integrations like
+// the dock icon and drag+drop.
+function onState (err, _state) {
+  if (err) return onError(err)
+  state = window.state = _state // Make available for easier debugging
+
+  // Create controllers
+  controllers = {
+    media: new MediaController(state),
+    update: new UpdateController(state),
+    prefs: new PrefsController(state, config),
+    playback: new PlaybackController(state, config, update),
+    subtitles: new SubtitlesController(state),
+    torrentList: new TorrentListController(state),
+    torrent: new TorrentController(state)
+  }
+
+  // Add first page to location history
+  state.location.go({
+    url: 'home',
+    setup: (cb) => {
+      state.window.title = config.APP_WINDOW_TITLE
+      cb(null)
+    }
+  })
+
+  // Restart everything we were torrenting last time the app ran
+  resumeTorrents()
+
+  // Lazy-load other stuff, like the AppleTV module, later to keep startup fast
+  window.setTimeout(delayedInit, config.DELAYED_INIT)
+
+  // Listen for messages from the main process
+  setupIpc()
+
+  // Calling update() updates the UI given the current state
+  // Do this at least once a second to give every file in every torrentSummary
+  // a progress bar and to keep the cursor in sync when playing a video
+  setInterval(update, 1000)
+  app = ReactDOM.render(<App state={state} />, document.querySelector('#body'))
+
+  // OS integrations:
+  // ...drag and drop files/text to start torrenting or seeding
+  dragDrop('body', {
+    onDrop: onOpen,
+    onDropText: onOpen
+  })
+
+  // ...same thing if you paste a torrent
+  document.addEventListener('paste', onPaste)
+
+  // ...focus and blur. Needed to show correct dock icon text ('badge') in OSX
+  window.addEventListener('focus', onFocus)
+  window.addEventListener('blur', onBlur)
+
+  // ...window visibility state.
+  document.addEventListener('webkitvisibilitychange', onVisibilityChange)
+
+  // Log uncaught JS errors
+  window.addEventListener('error',
+    (e) => telemetry.logUncaughtError('window', e.error || e.target), true)
+
+  // Done! Ideally we want to get here < 500ms after the user clicks the app
+  sound.play('STARTUP')
+  console.timeEnd('init')
+}
+
+// Runs a few seconds after the app loads, to avoid slowing down startup time
+function delayedInit () {
+  lazyLoadCast()
+  sound.preload()
+  telemetry.init(state)
+}
+
+// Lazily loads Chromecast and Airplay support
+function lazyLoadCast () {
+  if (!Cast) {
+    Cast = require('./lib/cast')
+    Cast.init(state, update) // Search the local network for Chromecast and Airplays
+  }
+  return Cast
+}
+
+// React loop:
+// 1. update() - recompute the virtual DOM, diff, apply to the real DOM
+// 2. event - might be a click or other DOM event, or something external
+// 3. dispatch - the event handler calls dispatch(), main.js sends it to a controller
+// 4. controller - the controller handles the event, changing the state object
+function update () {
+  controllers.playback.showOrHidePlayerControls()
+  app.setState(state)
+  updateElectron()
+}
+
+// Some state changes can't be reflected in the DOM, instead we have to
+// tell the main process to update the window or OS integrations
+function updateElectron () {
+  if (state.window.title !== state.prev.title) {
+    state.prev.title = state.window.title
+    ipcRenderer.send('setTitle', state.window.title)
+  }
+  if (state.dock.progress !== state.prev.progress) {
+    state.prev.progress = state.dock.progress
+    ipcRenderer.send('setProgress', state.dock.progress)
+  }
+  if (state.dock.badge !== state.prev.badge) {
+    state.prev.badge = state.dock.badge
+    ipcRenderer.send('setBadge', state.dock.badge || 0)
+  }
+}
+
+const dispatchHandlers = {
+  // Torrent list: creating, deleting, selecting torrents
+  'openTorrentFile': () => ipcRenderer.send('openTorrentFile'),
+  'openFiles': () => ipcRenderer.send('openFiles'), /* shows the open file dialog */
+  'openTorrentAddress': () => { state.modal = { id: 'open-torrent-address-modal' } },
+
+  'addTorrent': (torrentId) => controllers.torrentList.addTorrent(torrentId),
+  'showCreateTorrent': (paths) => controllers.torrentList.showCreateTorrent(paths),
+  'toggleCreateTorrentAdvanced': () => controllers.torrentList.toggleCreateTorrentAdvanced(),
+  'createTorrent': (options) => controllers.torrentList.createTorrent(options),
+  'toggleTorrent': (infoHash) => controllers.torrentList.toggleTorrent(infoHash),
+  'toggleTorrentFile': (infoHash, index) => controllers.torrentList.toggleTorrentFile(infoHash, index),
+  'confirmDeleteTorrent': (infoHash, deleteData) => controllers.torrentList.confirmDeleteTorrent(infoHash, deleteData),
+  'deleteTorrent': (infoHash, deleteData) => controllers.torrentList.deleteTorrent(infoHash, deleteData),
+  'toggleSelectTorrent': (infoHash) => controllers.torrentList.toggleSelectTorrent(infoHash),
+  'openTorrentContextMenu': (infoHash) => controllers.torrentList.openTorrentContextMenu(infoHash),
+  'startTorrentingSummary': (torrentSummary) =>
+    controllers.torrentList.startTorrentingSummary(torrentSummary),
+
+  // Playback
+  'playFile': (infoHash, index) => controllers.playback.playFile(infoHash, index),
+  'playPause': () => controllers.playback.playPause(),
+  'skip': (time) => controllers.playback.skip(time),
+  'skipTo': (time) => controllers.playback.skipTo(time),
+  'changePlaybackRate': (dir) => controllers.playback.changePlaybackRate(dir),
+  'changeVolume': (delta) => controllers.playback.changeVolume(delta),
+  'setVolume': (vol) => controllers.playback.setVolume(vol),
+  'openItem': (infoHash, index) => controllers.playback.openItem(infoHash, index),
+
+  // Subtitles
+  'openSubtitles': () => controllers.subtitles.openSubtitles(),
+  'selectSubtitle': (index) => controllers.subtitles.selectSubtitle(index),
+  'toggleSubtitlesMenu': () => controllers.subtitles.toggleSubtitlesMenu(),
+  'checkForSubtitles': () => controllers.subtitles.checkForSubtitles(),
+  'addSubtitles': (files, autoSelect) => controllers.subtitles.addSubtitles(files, autoSelect),
+
+  // Local media: <video>, <audio>, VLC
+  'mediaStalled': () => controllers.media.mediaStalled(),
+  'mediaError': (err) => controllers.media.mediaError(err),
+  'mediaSuccess': () => controllers.media.mediaSuccess(),
+  'mediaTimeUpdate': () => controllers.media.mediaTimeUpdate(),
+  'mediaMouseMoved': () => controllers.media.mediaMouseMoved(),
+  'vlcPlay': () => controllers.media.vlcPlay(),
+  'vlcNotFound': () => controllers.media.vlcNotFound(),
+
+  // Remote casting: Chromecast, Airplay, etc
+  'toggleCastMenu': (deviceType) => lazyLoadCast().toggleMenu(deviceType),
+  'selectCastDevice': (index) => lazyLoadCast().selectDevice(index),
+  'stopCasting': () => lazyLoadCast().stop(),
+
+  // Preferences screen
+  'preferences': () => controllers.prefs.show(),
+  'updatePreferences': (key, value) => controllers.prefs.update(key, value),
+
+  // Update (check for new versions on Linux, where there's no auto updater)
+  'updateAvailable': (version) => controllers.update.updateAvailable(version),
+  'skipVersion': (version) => controllers.update.skipVersion(version),
+
+  // Navigation between screens (back, forward, ESC, etc)
+  'exitModal': () => { state.modal = null },
+  'backToList': backToList,
+  'escapeBack': escapeBack,
+  'back': () => state.location.back(),
+  'forward': () => state.location.forward(),
+
+  // Controlling the window
+  'setDimensions': setDimensions,
+  'toggleFullScreen': (setTo) => ipcRenderer.send('toggleFullScreen', setTo),
+  'setTitle': (title) => { state.window.title = title },
+  'resetTitle': () => { state.window.title = config.APP_WINDOW_TITLE },
+
+  // Everything else
+  'onOpen': onOpen,
+  'error': onError,
+  'uncaughtError': (proc, err) => telemetry.logUncaughtError(proc, err),
+  'saveState': () => State.save(state),
+  'saveStateThrottled': () => State.saveThrottled(state),
+  'update': () => {} // No-op, just trigger an update
+}
+
+// Events from the UI never modify state directly. Instead they call dispatch()
+function dispatch (action, ...args) {
+  // Log dispatch calls, for debugging, but don't spam
+  if (!['mediaMouseMoved', 'mediaTimeUpdate', 'update'].includes(action)) {
+    console.log('dispatch: %s %o', action, args)
+  }
+
+  var handler = dispatchHandlers[action]
+  if (handler) handler(...args)
+  else console.error('Missing dispatch handler: ' + action)
+
+  // Update the virtual DOM, unless it's just a mouse move event
+  if (action !== 'mediaMouseMoved' ||
+      controllers.playback.showOrHidePlayerControls()) {
+    update()
+  }
+}
+
+// Listen to events from the main and webtorrent processes
+function setupIpc () {
+  ipcRenderer.on('log', (e, ...args) => console.log(...args))
+  ipcRenderer.on('error', (e, ...args) => console.error(...args))
+
+  ipcRenderer.on('dispatch', (e, ...args) => dispatch(...args))
+
+  ipcRenderer.on('fullscreenChanged', onFullscreenChanged)
+
+  var tc = controllers.torrent
+  ipcRenderer.on('wt-infohash', (e, ...args) => tc.torrentInfoHash(...args))
+  ipcRenderer.on('wt-metadata', (e, ...args) => tc.torrentMetadata(...args))
+  ipcRenderer.on('wt-done', (e, ...args) => tc.torrentDone(...args))
+  ipcRenderer.on('wt-warning', (e, ...args) => tc.torrentWarning(...args))
+  ipcRenderer.on('wt-error', (e, ...args) => tc.torrentError(...args))
+
+  ipcRenderer.on('wt-progress', (e, ...args) => tc.torrentProgress(...args))
+  ipcRenderer.on('wt-file-modtimes', (e, ...args) => tc.torrentFileModtimes(...args))
+  ipcRenderer.on('wt-file-saved', (e, ...args) => tc.torrentFileSaved(...args))
+  ipcRenderer.on('wt-poster', (e, ...args) => tc.torrentPosterSaved(...args))
+  ipcRenderer.on('wt-audio-metadata', (e, ...args) => tc.torrentAudioMetadata(...args))
+  ipcRenderer.on('wt-server-running', (e, ...args) => tc.torrentServerRunning(...args))
+
+  ipcRenderer.on('wt-uncaught-error', (e, err) => telemetry.logUncaughtError('webtorrent', err))
+
+  ipcRenderer.send('ipcReady')
+
+  State.on('savedState', () => ipcRenderer.send('savedState'))
+}
+
+// Quits any modal popovers and returns to the torrent list screen
+function backToList () {
+  // Exit any modals and screens with a back button
+  state.modal = null
+  state.location.backToFirst(function () {
+    // If we were already on the torrent list, scroll to the top
+    var contentTag = document.querySelector('.content')
+    if (contentTag) contentTag.scrollTop = 0
+  })
+}
+
+// Quits modals, full screen, or goes back. Happens when the user hits ESC
+function escapeBack () {
+  if (state.modal) {
+    dispatch('exitModal')
+  } else if (state.window.isFullScreen) {
+    dispatch('toggleFullScreen')
+  } else {
+    dispatch('back')
+  }
+}
+
+// Starts all torrents that aren't paused on program startup
+function resumeTorrents () {
+  state.saved.torrents
+    .filter((torrentSummary) => torrentSummary.status !== 'paused')
+    .forEach((torrentSummary) => controllers.torrentList.startTorrentingSummary(torrentSummary))
+}
+
+// Set window dimensions to match video dimensions or fill the screen
+function setDimensions (dimensions) {
+  // Don't modify the window size if it's already maximized
+  if (electron.remote.getCurrentWindow().isMaximized()) {
+    state.window.bounds = null
+    return
+  }
+
+  // Save the bounds of the window for later. See restoreBounds()
+  state.window.bounds = {
+    x: window.screenX,
+    y: window.screenY,
+    width: window.outerWidth,
+    height: window.outerHeight
+  }
+  state.window.wasMaximized = electron.remote.getCurrentWindow().isMaximized
+
+  // Limit window size to screen size
+  var screenWidth = window.screen.width
+  var screenHeight = window.screen.height
+  var aspectRatio = dimensions.width / dimensions.height
+  var scaleFactor = Math.min(
+    Math.min(screenWidth / dimensions.width, 1),
+    Math.min(screenHeight / dimensions.height, 1)
+  )
+  var width = Math.max(
+    Math.floor(dimensions.width * scaleFactor),
+    config.WINDOW_MIN_WIDTH
+  )
+  var height = Math.max(
+    Math.floor(dimensions.height * scaleFactor),
+    config.WINDOW_MIN_HEIGHT
+  )
+
+  ipcRenderer.send('setAspectRatio', aspectRatio)
+  ipcRenderer.send('setBounds', {x: null, y: null, width, height})
+  state.playing.aspectRatio = aspectRatio
+}
+
+// Called when the user adds files (.torrent, files to seed, subtitles) to the app
+// via any method (drag-drop, drag to app icon, command line)
+function onOpen (files) {
+  if (!Array.isArray(files)) files = [ files ]
+
+  if (state.modal) {
+    state.modal = null
+  }
+
+  var subtitles = files.filter(controllers.subtitles.isSubtitle)
+
+  if (state.location.url() === 'home' || subtitles.length === 0) {
+    if (files.every(TorrentPlayer.isTorrent)) {
+      if (state.location.url() !== 'home') {
+        dispatch('backToList')
+      }
+      // All .torrent files? Add them.
+      files.forEach((file) => controllers.torrentList.addTorrent(file))
+    } else {
+      // Show the Create Torrent screen. Let's seed those files.
+      controllers.torrentList.showCreateTorrent(files)
+    }
+  } else if (state.location.url() === 'player') {
+    controllers.subtitles.addSubtitles(subtitles, true)
+  }
+
+  update()
+}
+
+function onError (err) {
+  console.error(err.stack || err)
+  sound.play('ERROR')
+  state.errors.push({
+    time: new Date().getTime(),
+    message: err.message || err
+  })
+
+  update()
+}
+
+function onPaste (e) {
+  if (e.target.tagName.toLowerCase() === 'input') return
+
+  var torrentIds = electron.clipboard.readText().split('\n')
+  torrentIds.forEach(function (torrentId) {
+    torrentId = torrentId.trim()
+    if (torrentId.length === 0) return
+    controllers.torrentList.addTorrent(torrentId)
+  })
+
+  update()
+}
+
+function onFocus (e) {
+  state.window.isFocused = true
+  state.dock.badge = 0
+  update()
+}
+
+function onBlur () {
+  state.window.isFocused = false
+  update()
+}
+
+function onVisibilityChange () {
+  state.window.isVisible = !document.webkitHidden
+}
+
+function onFullscreenChanged (e, isFullScreen) {
+  state.window.isFullScreen = isFullScreen
+  if (!isFullScreen) {
+    // Aspect ratio gets reset in fullscreen mode, so restore it (Mac)
+    ipcRenderer.send('setAspectRatio', state.playing.aspectRatio)
+  }
+
+  update()
+}

src/renderer/views/app.js

@@ -0,0 +1,97 @@
+const React = require('react')
+
+const Header = require('./header')
+
+const Views = {
+  'home': require('./torrent-list'),
+  'player': require('./player'),
+  'create-torrent': require('./create-torrent'),
+  'preferences': require('./preferences')
+}
+
+const Modals = {
+  'open-torrent-address-modal': require('./open-torrent-address-modal'),
+  'remove-torrent-modal': require('./remove-torrent-modal'),
+  'update-available-modal': require('./update-available-modal'),
+  'unsupported-media-modal': require('./unsupported-media-modal')
+}
+
+module.exports = class App extends React.Component {
+
+  constructor (props) {
+    super(props)
+    this.state = props.state
+  }
+
+  render () {
+    var state = this.state
+
+    // Hide player controls while playing video, if the mouse stays still for a while
+    // Never hide the controls when:
+    // * The mouse is over the controls or we're scrubbing (see CSS)
+    // * The video is paused
+    // * The video is playing remotely on Chromecast or Airplay
+    var hideControls = state.location.url() === 'player' &&
+      state.playing.mouseStationarySince !== 0 &&
+      new Date().getTime() - state.playing.mouseStationarySince > 2000 &&
+      !state.playing.isPaused &&
+      state.playing.location === 'local' &&
+      state.playing.playbackRate === 1
+
+    var cls = [
+      'view-' + state.location.url(), /* e.g. view-home, view-player */
+      'is-' + process.platform /* e.g. is-darwin, is-win32, is-linux */
+    ]
+    if (state.window.isFullScreen) cls.push('is-fullscreen')
+    if (state.window.isFocused) cls.push('is-focused')
+    if (hideControls) cls.push('hide-video-controls')
+
+    var vdom = (
+      <div className={'app ' + cls.join(' ')}>
+        <Header state={state} />
+        {this.getErrorPopover()}
+        <div key='content' className='content'>{this.getView()}</div>
+        {this.getModal()}
+      </div>
+    )
+
+    return vdom
+  }
+
+  getErrorPopover () {
+    var now = new Date().getTime()
+    var recentErrors = this.state.errors.filter((x) => now - x.time < 5000)
+    var hasErrors = recentErrors.length > 0
+
+    var errorElems = recentErrors.map(function (error, i) {
+      return (<div key={i} className='error'>{error.message}</div>)
+    })
+    return (
+      <div key='errors'
+        className={'error-popover ' + (hasErrors ? 'visible' : 'hidden')}>
+        <div key='title' className='title'>Error</div>
+        {errorElems}
+      </div>
+    )
+  }
+
+  getModal () {
+    var state = this.state
+    if (!state.modal) return
+    var ModalContents = Modals[state.modal.id]
+    return (
+      <div key='modal' className='modal'>
+        <div key='modal-background' className='modal-background'></div>
+        <div key='modal-content' className='modal-content'>
+          <ModalContents state={state} />
+        </div>
+      </div>
+    )
+  }
+
+  getView () {
+    var state = this.state
+    var View = Views[state.location.url()]
+    return (<View state={state} />)
+  }
+}

src/renderer/views/create-torrent-error-page.js

@@ -0,0 +1,26 @@
+const React = require('react')
+
+const {dispatcher} = require('../lib/dispatcher')
+
+module.exports = class CreateTorrentErrorPage extends React.Component {
+  render () {
+    return (
+      <div className='create-torrent'>
+        <h2>Create torrent</h2>
+        <p className='torrent-info'>
+          <p>
+            Sorry, you must select at least one file that is not a hidden file.
+          </p>
+          <p>
+            Hidden files, starting with a . character, are not included.
+          </p>
+        </p>
+        <p className='float-right'>
+          <button className='button-flat light' onClick={dispatcher('back')}>
+            Cancel
+          </button>
+        </p>
+      </div>
+    )
+  }
+}

src/renderer/views/create-torrent.js

@@ -0,0 +1,131 @@
+const React = require('react')
+const createTorrent = require('create-torrent')
+const path = require('path')
+const prettyBytes = require('prettier-bytes')
+
+const {dispatch, dispatcher} = require('../lib/dispatcher')
+const CreateTorrentErrorPage = require('./create-torrent-error-page')
+
+module.exports = class CreateTorrentPage extends React.Component {
+  render () {
+    var state = this.props.state
+    var info = state.location.current()
+
+    // Preprocess: exclude .DS_Store and other dotfiles
+    var files = info.files
+      .filter((f) => !f.name.startsWith('.'))
+      .map((f) => ({name: f.name, path: f.path, size: f.size}))
+    if (files.length === 0) return (<CreateTorrentErrorPage state={state} />)
+
+    // First, extract the base folder that the files are all in
+    var pathPrefix = info.folderPath
+    if (!pathPrefix) {
+      pathPrefix = files.map((x) => x.path).reduce(findCommonPrefix)
+      if (!pathPrefix.endsWith('/') && !pathPrefix.endsWith('\\')) {
+        pathPrefix = path.dirname(pathPrefix)
+      }
+    }
+
+    // Sanity check: show the number of files and total size
+    var numFiles = files.length
+    var totalBytes = files
+      .map((f) => f.size)
+      .reduce((a, b) => a + b, 0)
+    var torrentInfo = `${numFiles} files, ${prettyBytes(totalBytes)}`
+
+    // Then, use the name of the base folder (or sole file, for a single file torrent)
+    // as the default name. Show all files relative to the base folder.
+    var defaultName, basePath
+    if (files.length === 1) {
+      // Single file torrent: /a/b/foo.jpg -> torrent name 'foo.jpg', path '/a/b'
+      defaultName = files[0].name
+      basePath = pathPrefix
+    } else {
+      // Multi file torrent: /a/b/{foo, bar}.jpg -> torrent name 'b', path '/a'
+      defaultName = path.basename(pathPrefix)
+      basePath = path.dirname(pathPrefix)
+    }
+    var maxFileElems = 100
+    var fileElems = files.slice(0, maxFileElems).map(function (file, i) {
+      var relativePath = files.length === 0 ? file.name : path.relative(pathPrefix, file.path)
+      return (<div key={i}>{relativePath}</div>)
+    })
+    if (files.length > maxFileElems) {
+      fileElems.push(<div key='more'>+ {maxFileElems - files.length} more</div>)
+    }
+    var trackers = createTorrent.announceList.join('\n')
+    var collapsedClass = info.showAdvanced ? 'expanded' : 'collapsed'
+
+    return (
+      <div className='create-torrent'>
+        <h2>Create torrent {defaultName}</h2>
+        <div key='info' className='torrent-info'>
+          {torrentInfo}
+        </div>
+        <div key='path-prefix' className='torrent-attribute'>
+          <label>Path:</label>
+          <div className='torrent-attribute'>{pathPrefix}</div>
+        </div>
+        <div key='toggle' className={'expand-collapse ' + collapsedClass}
+          onClick={dispatcher('toggleCreateTorrentAdvanced')}>
+          {info.showAdvanced ? 'Basic' : 'Advanced'}
+        </div>
+        <div key='advanced' className={'create-torrent-advanced ' + collapsedClass}>
+          <div key='comment' className='torrent-attribute'>
+            <label>Comment:</label>
+            <textarea className='torrent-attribute torrent-comment'></textarea>
+          </div>
+          <div key='trackers' className='torrent-attribute'>
+            <label>Trackers:</label>
+            <textarea className='torrent-attribute torrent-trackers' value={trackers}></textarea>
+          </div>
+          <div key='private' className='torrent-attribute'>
+            <label>Private:</label>
+            <input type='checkbox' className='torrent-is-private' value='torrent-is-private' />
+          </div>
+          <div key='files' className='torrent-attribute'>
+            <label>Files:</label>
+            <div>{fileElems}</div>
+          </div>
+        </div>
+        <div key='buttons' className='float-right'>
+          <button key='cancel' className='button-flat light' onClick={dispatcher('back')}>Cancel</button>
+          <button key='create' className='button-raised' onClick={handleOK}>Create Torrent</button>
+        </div>
+      </div>
+    )
+
+    function handleOK () {
+      // TODO: dcposch use React refs instead
+      var announceList = document.querySelector('.torrent-trackers').value
+        .split('\n')
+        .map((s) => s.trim())
+        .filter((s) => s !== '')
+      var isPrivate = document.querySelector('.torrent-is-private').checked
+      var comment = document.querySelector('.torrent-comment').value.trim()
+      var options = {
+        // We can't let the user choose their own name if we want WebTorrent
+        // to use the files in place rather than creating a new folder.
+        // If we ever want to add support for that:
+        // name: document.querySelector('.torrent-name').value
+        name: defaultName,
+        path: basePath,
+        files: files,
+        announce: announceList,
+        private: isPrivate,
+        comment: comment
+      }
+      dispatch('createTorrent', options)
+    }
+  }
+}
+
+// Finds the longest common prefix
+function findCommonPrefix (a, b) {
+  for (var i = 0; i < a.length && i < b.length; i++) {
+    if (a.charCodeAt(i) !== b.charCodeAt(i)) break
+  }
+  if (i === a.length) return a
+  if (i === b.length) return b
+  return a.substring(0, i)
+}

src/renderer/views/header.js

@@ -0,0 +1,50 @@
+const React = require('react')
+
+const {dispatcher} = require('../lib/dispatcher')
+
+module.exports = class Header extends React.Component {
+  render () {
+    var loc = this.props.state.location
+    return (
+      <div key='header' className='header'>
+        {this.getTitle()}
+        <div className='nav left float-left'>
+          <i
+            className={'icon back ' + (loc.hasBack() ? '' : 'disabled')}
+            title='Back'
+            onClick={dispatcher('back')}>
+            chevron_left
+          </i>
+          <i
+            className={'icon forward ' + (loc.hasForward() ? '' : 'disabled')}
+            title='Forward'
+            onClick={dispatcher('forward')}>
+            chevron_right
+          </i>
+        </div>
+        <div className='nav right float-right'>
+          {this.getAddButton()}
+        </div>
+      </div>
+    )
+  }
+
+  getTitle () {
+    if (process.platform !== 'darwin') return null
+    var state = this.props.state
+    return (<div className='title ellipsis'>{state.window.title}</div>)
+  }
+
+  getAddButton () {
+    var state = this.props.state
+    if (state.location.url() !== 'home') return null
+    return (
+      <i
+        className='icon add'
+        title='Add torrent'
+        onClick={dispatcher('openFiles')}>
+        add
+      </i>
+    )
+  }
+}

src/renderer/views/open-torrent-address-modal.js

@@ -0,0 +1,32 @@
+const React = require('react')
+
+const {dispatch, dispatcher} = require('../lib/dispatcher')
+
+module.exports = class OpenTorrentAddressModal extends React.Component {
+  render () {
+    // TODO: dcposch remove janky inline <script>
+    return (
+      <div className='open-torrent-address-modal'>
+        <p><label>Enter torrent address or magnet link</label></p>
+        <p>
+          <input id='add-torrent-url' type='text' onKeyPress={handleKeyPress} />
+        </p>
+        <p className='float-right'>
+          <button className='button button-flat' onClick={dispatcher('exitModal')}>Cancel</button>
+          <button className='button button-raised' onClick={handleOK}>OK</button>
+        </p>
+        <script>document.querySelector('#add-torrent-url').focus()</script>
+      </div>
+    )
+  }
+}
+
+function handleKeyPress (e) {
+  if (e.which === 13) handleOK() /* hit Enter to submit */
+}
+
+function handleOK () {
+  dispatch('exitModal')
+  // TODO: dcposch use React refs instead
+  dispatch('addTorrent', document.querySelector('#add-torrent-url').value)
+}

src/renderer/views/player.js

@@ -1,27 +1,28 @@
-module.exports = Player
+const React = require('react')
+const Bitfield = require('bitfield')
+const prettyBytes = require('prettier-bytes')
+const zeroFill = require('zero-fill')
 
-var Bitfield = require('bitfield')
-var prettyBytes = require('prettier-bytes')
-var zeroFill = require('zero-fill')
-
-var hx = require('../lib/hx')
-var TorrentSummary = require('../lib/torrent-summary')
-var {dispatch, dispatcher} = require('../lib/dispatcher')
+const TorrentSummary = require('../lib/torrent-summary')
+const {dispatch, dispatcher} = require('../lib/dispatcher')
 
 // Shows a streaming video player. Standard features + Chromecast + Airplay
-function Player (state) {
-  // Show the video as large as will fit in the window, play immediately
-  // If the video is on Chromecast or Airplay, show a title screen instead
-  var showVideo = state.playing.location === 'local'
-  return hx`
-    <div
-      class='player'
-      onwheel=${handleVolumeWheel}
-      onmousemove=${dispatcher('mediaMouseMoved')}>
-      ${showVideo ? renderMedia(state) : renderCastScreen(state)}
-      ${renderPlayerControls(state)}
+module.exports = class Player extends React.Component {
+  render () {
+    // Show the video as large as will fit in the window, play immediately
+    // If the video is on Chromecast or Airplay, show a title screen instead
+    var state = this.props.state
+    var showVideo = state.playing.location === 'local'
+    return (
+      <div
+        className='player'
+        onWheel={handleVolumeWheel}
+        onMouseMove={dispatcher('mediaMouseMoved')}>
+        {showVideo ? renderMedia(state) : renderCastScreen(state)}
+        {renderPlayerControls(state)}
       </div>
-  `
+    )
+  }
 }
 
 // Handles volume change by wheel
@@ -43,7 +44,7 @@ function renderMedia (state) {
       mediaElement.play()
     }
     // When the user clicks or drags on the progress bar, jump to that position
-    if (state.playing.jumpToTime) {
+    if (state.playing.jumpToTime != null) {
       mediaElement.currentTime = state.playing.jumpToTime
       state.playing.jumpToTime = null
     }
@@ -73,6 +74,15 @@ function renderMedia (state) {
     var file = state.getPlayingFileSummary()
     file.currentTime = state.playing.currentTime = mediaElement.currentTime
     file.duration = state.playing.duration = mediaElement.duration
+
+    // Save selected subtitle
+    if (state.playing.subtitles.selectedIndex !== -1) {
+      var index = state.playing.subtitles.selectedIndex
+      file.selectedSubtitle = state.playing.subtitles.tracks[index].filePath
+    } else if (file.selectedSubtitle != null) {
+      delete file.selectedSubtitle
+    }
+
     state.playing.volume = mediaElement.volume
   }
 
@@ -82,42 +92,44 @@ function renderMedia (state) {
     for (var i = 0; i < state.playing.subtitles.tracks.length; i++) {
       var track = state.playing.subtitles.tracks[i]
       var isSelected = state.playing.subtitles.selectedIndex === i
-      trackTags.push(hx`
+      trackTags.push(
         <track
-          ${isSelected ? 'default' : ''}
-          label=${track.label}
+          key={i}
+          default={isSelected ? 'default' : ''}
+          label={track.label}
           type='subtitles'
-          src=${track.buffer}>
-      `)
+          src={track.buffer} />
+      )
     }
   }
 
   // Create the <audio> or <video> tag
-  var mediaTag = hx`
-    <div
-      src='${state.server.localURL}'
-      ondblclick=${dispatcher('toggleFullScreen')}
-      onloadedmetadata=${onLoadedMetadata}
-      onended=${onEnded}
-      onstalling=${dispatcher('mediaStalled')}
-      onerror=${dispatcher('mediaError')}
-      ontimeupdate=${dispatcher('mediaTimeUpdate')}
-      onencrypted=${dispatcher('mediaEncrypted')}
-      oncanplay=${onCanPlay}>
-      ${trackTags}
-    </div>
-  `
-  mediaTag.tagName = state.playing.type // conditional tag name
+  var MediaTagName = state.playing.type
+  var mediaTag = (
+    <MediaTagName
+      src={state.server.localURL}
+      onDoubleClick={dispatcher('toggleFullScreen')}
+      onLoadedMetadata={onLoadedMetadata}
+      onEnded={onEnded}
+      onStalled={dispatcher('mediaStalled')}
+      onError={dispatcher('mediaError')}
+      onTimeUpdate={dispatcher('mediaTimeUpdate')}
+      onEncrypted={dispatcher('mediaEncrypted')}
+      onCanPlay={onCanPlay}>
+      {trackTags}
+    </MediaTagName>
+  )
 
   // Show the media.
-  return hx`
+  return (
     <div
-      class='letterbox'
-      onmousemove=${dispatcher('mediaMouseMoved')}>
-      ${mediaTag}
-      ${renderOverlay(state)}
+      key='letterbox'
+      className='letterbox'
+      onMouseMove={dispatcher('mediaMouseMoved')}>
+      {mediaTag}
+      {renderOverlay(state)}
     </div>
-  `
+  )
 
   // As soon as we know the video dimensions, resize the window
   function onLoadedMetadata (e) {
@@ -143,6 +155,7 @@ function renderMedia (state) {
     } else if (elem.webkitAudioDecodedByteCount === 0) {
       dispatch('mediaError', 'Audio codec unsupported')
     } else {
+      dispatch('mediaSuccess')
       elem.play()
     }
   }
@@ -167,11 +180,11 @@ function renderOverlay (state) {
     return
   }
 
-  return hx`
-    <div class='media-overlay-background' style=${style}>
-      <div class='media-overlay'>${elems}</div>
+  return (
+    <div key='overlay' className='media-overlay-background' style={style}>
+      <div className='media-overlay'>{elems}</div>
     </div>
-  `
+  )
 }
 
 function renderAudioMetadata (state) {
@@ -197,36 +210,36 @@ function renderAudioMetadata (state) {
   // Show a small info box in the middle of the screen with title/album/etc
   var elems = []
   if (artist) {
-    elems.push(hx`
-      <div class='audio-artist'>
-        <label>Artist</label>${artist}
+    elems.push((
+      <div key='artist' className='audio-artist'>
+        <label>Artist</label>{artist}
       </div>
-    `)
+    ))
   }
   if (album) {
-    elems.push(hx`
-      <div class='audio-album'>
-        <label>Album</label>${album}
+    elems.push((
+      <div key='album' className='audio-album'>
+        <label>Album</label>{album}
       </div>
-    `)
+    ))
   }
   if (track) {
-    elems.push(hx`
-      <div class='audio-track'>
-        <label>Track</label>${track}
+    elems.push((
+      <div key='track' className='audio-track'>
+        <label>Track</label>{track}
       </div>
-    `)
+    ))
   }
 
   // Align the title with the other info, if available. Otherwise, center title
-  var emptyLabel = hx`<label></label>`
-  elems.unshift(hx`
-    <div class='audio-title'>
-      ${elems.length ? emptyLabel : undefined}${title}
+  var emptyLabel = (<label></label>)
+  elems.unshift((
+    <div key='title' className='audio-title'>
+      {elems.length ? emptyLabel : undefined}{title}
     </div>
-  `)
+  ))
 
-  return hx`<div class='audio-metadata'>${elems}</div>`
+  return (<div key='audio-metadata' className='audio-metadata'>{elems}</div>)
 }
 
 function renderLoadingSpinner (state) {
@@ -242,16 +255,16 @@ function renderLoadingSpinner (state) {
     fileProgress = Math.floor(100 * file.numPiecesPresent / file.numPieces)
   }
 
-  return hx`
-    <div class='media-stalled'>
-      <div class='loading-spinner'>&nbsp;</div>
-      <div class='loading-status ellipsis'>
-        <span class='progress'>${fileProgress}%</span> downloaded,
-        <span>↓ ${prettyBytes(prog.downloadSpeed || 0)}/s</span>
-        <span>↑ ${prettyBytes(prog.uploadSpeed || 0)}/s</span>
+  return (
+    <div key='loading' className='media-stalled'>
+      <div key='loading-spinner' className='loading-spinner'>&nbsp;</div>
+      <div key='loading-progress' className='loading-status ellipsis'>
+        <span className='progress'>{fileProgress}%</span> downloaded,
+        <span>↓ {prettyBytes(prog.downloadSpeed || 0)}/s</span>
+        <span>↑ {prettyBytes(prog.uploadSpeed || 0)}/s</span>
       </div>
     </div>
-  `
+  )
 }
 
 function renderCastScreen (state) {
@@ -279,8 +292,10 @@ function renderCastScreen (state) {
   }
 
   var isStarting = state.playing.location.endsWith('-pending')
+  var castName = state.playing.castName
   var castStatus
-  if (isCast) castStatus = isStarting ? 'Connecting...' : 'Connected'
+  if (isCast && isStarting) castStatus = 'Connecting to ' + castName + '...'
+  else if (isCast && !isStarting) castStatus = 'Connected to ' + castName
   else castStatus = ''
 
   // Show a nice title image, if possible
@@ -288,42 +303,66 @@ function renderCastScreen (state) {
     backgroundImage: cssBackgroundImagePoster(state)
   }
 
-  return hx`
-    <div class='letterbox' style=${style}>
-      <div class='cast-screen'>
-        <i class='icon'>${castIcon}</i>
-        <div class='cast-type'>${castType}</div>
-        <div class='cast-status'>${castStatus}</div>
+  return (
+    <div key='cast' className='letterbox' style={style}>
+      <div className='cast-screen'>
+        <i className='icon'>{castIcon}</i>
+        <div key='type' className='cast-type'>{castType}</div>
+        <div key='status' className='cast-status'>{castStatus}</div>
       </div>
     </div>
-  `
+  )
 }
 
-function renderSubtitlesOptions (state) {
+function renderCastOptions (state) {
+  if (!state.devices.castMenu) return
+
+  var {location, devices} = state.devices.castMenu
+  var player = state.devices[location]
+
+  var items = devices.map(function (device, ix) {
+    var isSelected = player.device === device
+    var name = device.name
+    return (
+      <li key={ix} onClick={dispatcher('selectCastDevice', ix)}>
+        <i className='icon'>{isSelected ? 'radio_button_checked' : 'radio_button_unchecked'}</i>
+        {name}
+      </li>
+    )
+  })
+
+  return (
+    <ul key='cast-options' className='options-list'>
+      {items}
+    </ul>
+  )
+}
+
+function renderSubtitleOptions (state) {
   var subtitles = state.playing.subtitles
   if (!subtitles.tracks.length || !subtitles.showMenu) return
 
   var items = subtitles.tracks.map(function (track, ix) {
     var isSelected = state.playing.subtitles.selectedIndex === ix
-    return hx`
-      <li onclick=${dispatcher('selectSubtitle', ix)}>
-        <i.icon>${'radio_button_' + (isSelected ? 'checked' : 'unchecked')}</i>
-        ${track.label}
+    return (
+      <li key={ix} onClick={dispatcher('selectSubtitle', ix)}>
+        <i className='icon'>{'radio_button_' + (isSelected ? 'checked' : 'unchecked')}</i>
+        {track.label}
       </li>
-    `
+    )
   })
 
   var noneSelected = state.playing.subtitles.selectedIndex === -1
   var noneClass = 'radio_button_' + (noneSelected ? 'checked' : 'unchecked')
-  return hx`
-    <ul.subtitles-list>
-      ${items}
-      <li onclick=${dispatcher('selectSubtitle', -1)}>
-        <i.icon>${noneClass}</i>
+  return (
+    <ul key='subtitle-options' className='options-list'>
+      {items}
+      <li onClick={dispatcher('selectSubtitle', -1)}>
+        <i className='icon'>{noneClass}</i>
         None
       </li>
     </ul>
-  `
+  )
 }
 
 function renderPlayerControls (state) {
@@ -336,114 +375,95 @@ function renderPlayerControls (state) {
       : ''
 
   var elements = [
-    hx`
-      <div class='playback-bar'>
-        ${renderLoadingBar(state)}
-        <div
-          class='playback-cursor'
-          style=${playbackCursorStyle}>
-        </div>
-        <div
-          class='scrub-bar'
-          draggable='true'
-          ondragstart=${handleDragStart}
-          onclick=${handleScrub},
-          ondrag=${handleScrub}>
-        </div>
+    <div key='playback-bar' className='playback-bar'>
+      {renderLoadingBar(state)}
+      <div
+        key='cursor'
+        className='playback-cursor'
+        style={playbackCursorStyle}>
       </div>
-    `,
-    hx`
-      <i class='icon play-pause float-left' onclick=${dispatcher('playPause')}>
-        ${state.playing.isPaused ? 'play_arrow' : 'pause'}
-      </i>
-    `,
-    hx`
-      <i
-        class='icon fullscreen float-right'
-        onclick=${dispatcher('toggleFullScreen')}>
-        ${state.window.isFullScreen ? 'fullscreen_exit' : 'fullscreen'}
-      </i>
-    `
+      <div
+        key='scrub-bar'
+        className='scrub-bar'
+        draggable='true'
+        onDragStart={handleDragStart}
+        onClick={handleScrub}
+        onDrag={handleScrub}>
+      </div>
+    </div>,
+
+    <i
+      key='play'
+      className='icon play-pause float-left'
+      onClick={dispatcher('playPause')}>
+      {state.playing.isPaused ? 'play_arrow' : 'pause'}
+    </i>,
+
+    <i
+      key='fullscreen'
+      className='icon fullscreen float-right'
+      onClick={dispatcher('toggleFullScreen')}>
+      {state.window.isFullScreen ? 'fullscreen_exit' : 'fullscreen'}
+    </i>
   ]
 
   if (state.playing.type === 'video') {
     // show closed captions icon
-    elements.push(hx`
-      <i.icon.closed-caption.float-right
-        class=${captionsClass}
-        onclick=${handleSubtitles}>
+    elements.push((
+      <i
+        key='subtitles'
+        className={'icon closed-caption float-right ' + captionsClass}
+        onClick={handleSubtitles}>
         closed_caption
       </i>
-    `)
+    ))
   }
 
   // If we've detected a Chromecast or AppleTV, the user can play video there
-  var isOnChromecast = state.playing.location.startsWith('chromecast')
-  var isOnAirplay = state.playing.location.startsWith('airplay')
-  var isOnDlna = state.playing.location.startsWith('dlna')
-  var chromecastClass, chromecastHandler
-  var airplayClass, airplayHandler
-  var dlnaClass, dlnaHandler
-  if (isOnChromecast) {
-    chromecastClass = 'active'
-    dlnaClass = 'disabled'
-    airplayClass = 'disabled'
-    chromecastHandler = dispatcher('closeDevice')
-    airplayHandler = undefined
-    dlnaHandler = undefined
-  } else if (isOnAirplay) {
-    chromecastClass = 'disabled'
-    dlnaClass = 'disabled'
-    airplayClass = 'active'
-    chromecastHandler = undefined
-    airplayHandler = dispatcher('closeDevice')
-    dlnaHandler = undefined
-  } else if (isOnDlna) {
-    chromecastClass = 'disabled'
-    dlnaClass = 'active'
-    airplayClass = 'disabled'
-    chromecastHandler = undefined
-    airplayHandler = undefined
-    dlnaHandler = dispatcher('closeDevice')
-  } else {
-    chromecastClass = ''
-    airplayClass = ''
-    dlnaClass = ''
-    chromecastHandler = dispatcher('openDevice', 'chromecast')
-    airplayHandler = dispatcher('openDevice', 'airplay')
-    dlnaHandler = dispatcher('openDevice', 'dlna')
-  }
-  if (state.devices.chromecast || isOnChromecast) {
-    var castIcon = isOnChromecast ? 'cast_connected' : 'cast'
-    elements.push(hx`
-      <i.icon.device.float-right
-        class=${chromecastClass}
-        onclick=${chromecastHandler}>
-        ${castIcon}
-      </i>
-    `)
-  }
-  if (state.devices.airplay || isOnAirplay) {
-    elements.push(hx`
-      <i.icon.device.float-right
-        class=${airplayClass}
-        onclick=${airplayHandler}>
-        airplay
-      </i>
-    `)
-  }
-  if (state.devices.dlna || isOnDlna) {
-    elements.push(hx`
-      <i
-        class='icon device float-right'
-        class=${dlnaClass}
-        onclick=${dlnaHandler}>
-        tv
-      </i>
-    `)
-  }
+  var castTypes = ['chromecast', 'airplay', 'dlna']
+  var isCastingAnywhere = castTypes.some(
+    (castType) => state.playing.location.startsWith(castType))
 
-  // render volume
+  // Add the cast buttons. Icons for each cast type, connected/disconnected:
+  var buttonIcons = {
+    'chromecast': {true: 'cast_connected', false: 'cast'},
+    'airplay': {true: 'airplay', false: 'airplay'},
+    'dlna': {true: 'tv', false: 'tv'}
+  }
+  castTypes.forEach(function (castType) {
+    // Do we show this button (eg. the Chromecast button) at all?
+    var isCasting = state.playing.location.startsWith(castType)
+    var player = state.devices[castType]
+    if ((!player || player.getDevices().length === 0) && !isCasting) return
+
+    // Show the button. Three options for eg the Chromecast button:
+    var buttonClass, buttonHandler
+    if (isCasting) {
+      // Option 1: we are currently connected to Chromecast. Button stops the cast.
+      buttonClass = 'active'
+      buttonHandler = dispatcher('stopCasting')
+    } else if (isCastingAnywhere) {
+      // Option 2: we are currently connected somewhere else. Button disabled.
+      buttonClass = 'disabled'
+      buttonHandler = undefined
+    } else {
+      // Option 3: we are not connected anywhere. Button opens Chromecast menu.
+      buttonClass = ''
+      buttonHandler = dispatcher('toggleCastMenu', castType)
+    }
+    var buttonIcon = buttonIcons[castType][isCasting]
+
+    elements.push((
+      <i
+        key={castType}
+        className={'icon device float-right ' + buttonClass}
+        onClick={buttonHandler}>
+        {buttonIcon}
+      </i>
+    ))
+  })
+
+  // Render volume slider
   var volume = state.playing.volume
   var volumeIcon = 'volume_' + (
     volume === 0 ? 'off'
@@ -456,49 +476,50 @@ function renderPlayerControls (state) {
       'color-stop(' + (volume * 100) + '%, #727272))'
   }
 
-  elements.push(hx`
-    <div class='volume float-left'>
+  // TODO: dcposch change the range input to use value / onChanged instead of
+  // "readonly" / onMouse[Down,Move,Up]
+  elements.push((
+    <div key='volume' className='volume float-left'>
       <i
-        class='icon volume-icon float-left'
-        onmousedown=${handleVolumeMute}>
-        ${volumeIcon}
+        className='icon volume-icon float-left'
+        onMouseDown={handleVolumeMute}>
+        {volumeIcon}
       </i>
       <input
-        class='volume-slider float-right'
+        className='volume-slider float-right'
         type='range' min='0' max='1' step='0.05'
-        value=${volumeChanging !== false ? volumeChanging : volume}
-        onmousedown=${handleVolumeScrub}
-        onmouseup=${handleVolumeScrub}
-        onmousemove=${handleVolumeScrub}
-        style=${volumeStyle}
+        value={volume}
+        onChange={handleVolumeScrub}
+        style={volumeStyle}
       />
     </div>
-  `)
+  ))
 
   // Show video playback progress
   var currentTimeStr = formatTime(state.playing.currentTime)
   var durationStr = formatTime(state.playing.duration)
-  elements.push(hx`
-    <span class='time float-left'>
-      ${currentTimeStr} / ${durationStr}
+  elements.push((
+    <span key='time' className='time float-left'>
+      {currentTimeStr} / {durationStr}
     </span>
-  `)
+  ))
 
   // render playback rate
   if (state.playing.playbackRate !== 1) {
-    elements.push(hx`
-      <span class='rate float-left'>
-        ${state.playing.playbackRate}x
+    elements.push((
+      <span key='rate' className='rate float-left'>
+        {state.playing.playbackRate}x
       </span>
-    `)
+    ))
   }
 
-  return hx`
-    <div class='controls'>
-      ${elements}
-      ${renderSubtitlesOptions(state)}
+  return (
+    <div key='controls' className='controls'>
+      {elements}
+      {renderCastOptions(state)}
+      {renderSubtitleOptions(state)}
     </div>
-  `
+  )
 
   function handleDragStart (e) {
     // Prevent the cursor from changing, eg to a green + icon on Mac
@@ -510,11 +531,12 @@ function renderPlayerControls (state) {
 
   // Handles a click or drag to scrub (jump to another position in the video)
   function handleScrub (e) {
+    if (!e.clientX) return
     dispatch('mediaMouseMoved')
     var windowWidth = document.querySelector('body').clientWidth
     var fraction = e.clientX / windowWidth
     var position = fraction * state.playing.duration /* seconds */
-    dispatch('playbackJump', position)
+    dispatch('skipTo', position)
   }
 
   // Handles volume muting and Unmuting
@@ -528,21 +550,7 @@ function renderPlayerControls (state) {
 
   // Handles volume slider scrub
   function handleVolumeScrub (e) {
-    switch (e.type) {
-      case 'mouseup':
-        volumeChanging = false
-        dispatch('setVolume', e.offsetX / 50)
-        break
-      case 'mousedown':
-        volumeChanging = this.value
-        break
-      case 'mousemove':
-        // only change if move was started by click
-        if (volumeChanging !== false) {
-          volumeChanging = this.value
-        }
-        break
-    }
+    dispatch('setVolume', e.target.value)
   }
 
   function handleSubtitles (e) {
@@ -555,11 +563,8 @@ function renderPlayerControls (state) {
   }
 }
 
-// lets scrub without sending to volume backend
-var volumeChanging = false
-
 // Renders the loading bar. Shows which parts of the torrent are loaded, which
-// can be "spongey" / non-contiguous
+// can be 'spongey' / non-contiguous
 function renderLoadingBar (state) {
   var torrentSummary = state.getPlayingTorrentSummary()
   if (!torrentSummary.progress) {
@@ -582,18 +587,15 @@ function renderLoadingBar (state) {
   }
 
   // Output some bars to show which parts of the file are loaded
-  return hx`
-    <div class='loading-bar'>
-      ${parts.map(function (part) {
-        var style = {
-          left: (100 * part.start / fileProg.numPieces) + '%',
-          width: (100 * part.count / fileProg.numPieces) + '%'
-        }
+  var loadingBarElems = parts.map(function (part, i) {
+    var style = {
+      left: (100 * part.start / fileProg.numPieces) + '%',
+      width: (100 * part.count / fileProg.numPieces) + '%'
+    }
 
-        return hx`<div class='loading-bar-part' style=${style}></div>`
-      })}
-    </div>
-  `
+    return (<div key={i} className='loading-bar-part' style={style}></div>)
+  })
+  return (<div key='loading-bar' className='loading-bar'>{loadingBarElems}</div>)
 }
 
 // Returns the CSS background-image string for a poster image + dark vignette

src/renderer/views/preferences.js

@@ -1,21 +1,23 @@
-module.exports = Preferences
+const React = require('react')
+const remote = require('electron').remote
+const dialog = remote.dialog
 
-var hx = require('../lib/hx')
-var {dispatch} = require('../lib/dispatcher')
+const {dispatch} = require('../lib/dispatcher')
 
-var remote = require('electron').remote
-var dialog = remote.dialog
-
-function Preferences (state) {
-  return hx`
-    <div class='preferences'>
-      ${renderGeneralSection(state)}
-    </div>
-  `
+module.exports = class Preferences extends React.Component {
+  render () {
+    var state = this.props.state
+    return (
+      <div className='preferences'>
+        {renderGeneralSection(state)}
+      </div>
+    )
+  }
 }
 
 function renderGeneralSection (state) {
   return renderSection({
+    key: 'general',
     title: 'General',
     description: '',
     icon: 'settings'
@@ -26,6 +28,7 @@ function renderGeneralSection (state) {
 
 function renderDownloadDirSelector (state) {
   return renderFileSelector({
+    key: 'download-path',
     label: 'Download Path',
     description: 'Data from torrents will be saved here',
     property: 'downloadPath',
@@ -44,24 +47,24 @@ function renderDownloadDirSelector (state) {
 // - definition should be {icon, title, description}
 // - controls should be an array of vdom elements
 function renderSection (definition, controls) {
-  var helpElem = !definition.description ? null : hx`
-    <div class='help text'>
-      <i.icon>help_outline</i>${definition.description}
+  var helpElem = !definition.description ? null : (
+    <div key='help' className='help text'>
+      <i className='icon'>help_outline</i>{definition.description}
     </div>
-  `
-  return hx`
-    <section class='section preferences-panel'>
-      <div class='section-container'>
-        <div class='section-heading'>
-          <i.icon>${definition.icon}</i>${definition.title}
+  )
+  return (
+    <section key={definition.key} className='section preferences-panel'>
+      <div className='section-container'>
+        <div key='heading' className='section-heading'>
+          <i className='icon'>{definition.icon}</i>{definition.title}
         </div>
-        ${helpElem}
-        <div class='section-body'>
-          ${controls}
+        {helpElem}
+        <div key='body' className='section-body'>
+          {controls}
         </div>
       </div>
     </section>
-  `
+  )
 }
 
 // Creates a file chooser
@@ -70,25 +73,25 @@ function renderSection (definition, controls) {
 // - value should be the current pref, a file or folder path
 // - callback takes a new file or folder path
 function renderFileSelector (definition, value, callback) {
-  return hx`
-    <div class='control-group'>
-      <div class='controls'>
-        <label class='control-label'>
-          <div class='preference-title'>${definition.label}</div>
-          <div class='preference-description'>${definition.description}</div>
+  return (
+    <div key={definition.key} className='control-group'>
+      <div className='controls'>
+        <label className='control-label'>
+          <div className='preference-title'>{definition.label}</div>
+          <div className='preference-description'>{definition.description}</div>
         </label>
-        <div class='controls'>
-          <input type='text' class='file-picker-text'
-            id=${definition.property}
+        <div className='controls'>
+          <input type='text' className='file-picker-text'
+            id={definition.property}
             disabled='disabled'
-            value=${value} />
-          <button class='btn' onclick=${handleClick}>
-            <i.icon>folder_open</i>
+            value={value} />
+          <button className='btn' onClick={handleClick}>
+            <i className='icon'>folder_open</i>
           </button>
         </div>
       </div>
     </div>
-  `
+  )
   function handleClick () {
     dialog.showOpenDialog(remote.getCurrentWindow(), definition.options, function (filenames) {
       if (!Array.isArray(filenames)) return

src/renderer/views/remove-torrent-modal.js

@@ -0,0 +1,28 @@
+const React = require('react')
+
+const {dispatch, dispatcher} = require('../lib/dispatcher')
+
+module.exports = class RemoveTorrentModal extends React.Component {
+  render () {
+    var state = this.props.state
+    var message = state.modal.deleteData
+      ? 'Are you sure you want to remove this torrent from the list and delete the data file?'
+      : 'Are you sure you want to remove this torrent from the list?'
+    var buttonText = state.modal.deleteData ? 'Remove Data' : 'Remove'
+
+    return (
+      <div>
+        <p><strong>{message}</strong></p>
+        <p className='float-right'>
+          <button className='button button-flat' onClick={dispatcher('exitModal')}>Cancel</button>
+          <button className='button button-raised' onClick={handleRemove}>{buttonText}</button>
+        </p>
+      </div>
+    )
+
+    function handleRemove () {
+      dispatch('deleteTorrent', state.modal.infoHash, state.modal.deleteData)
+      dispatch('exitModal')
+    }
+  }
+}

src/renderer/views/torrent-list.js

@@ -0,0 +1,330 @@
+const React = require('react')
+const prettyBytes = require('prettier-bytes')
+
+const TorrentSummary = require('../lib/torrent-summary')
+const TorrentPlayer = require('../lib/torrent-player')
+const {dispatcher} = require('../lib/dispatcher')
+
+module.exports = class TorrentList extends React.Component {
+  render () {
+    var state = this.props.state
+    var torrentRows = state.saved.torrents.map(
+      (torrentSummary) => this.renderTorrent(torrentSummary)
+    )
+
+    return (
+      <div key='torrent-list' className='torrent-list'>
+        {torrentRows}
+        <div key='torrent-placeholder' className='torrent-placeholder'>
+          <span className='ellipsis'>Drop a torrent file here or paste a magnet link</span>
+        </div>
+      </div>
+    )
+  }
+
+  renderTorrent (torrentSummary) {
+    var state = this.props.state
+    var infoHash = torrentSummary.infoHash
+    var isSelected = infoHash && state.selectedInfoHash === infoHash
+
+    // Background image: show some nice visuals, like a frame from the movie, if possible
+    var style = {}
+    if (torrentSummary.posterFileName) {
+      var gradient = isSelected
+        ? 'linear-gradient(to bottom, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.4) 100%)'
+        : 'linear-gradient(to bottom, rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0) 100%)'
+      var posterPath = TorrentSummary.getPosterPath(torrentSummary)
+      style.backgroundImage = gradient + `, url('${posterPath}')`
+    }
+
+    // Foreground: name of the torrent, basic info like size, play button,
+    // cast buttons if available, and delete
+    var classes = ['torrent']
+    //  playStatus turns the play button into a loading spinner or error icon
+    if (torrentSummary.playStatus) classes.push(torrentSummary.playStatus)
+    if (isSelected) classes.push('selected')
+    if (!infoHash) classes.push('disabled')
+    return (
+      <div
+        key={torrentSummary.torrentKey}
+        style={style}
+        className={classes.join(' ')}
+        onContextMenu={infoHash && dispatcher('openTorrentContextMenu', infoHash)}
+        onClick={infoHash && dispatcher('toggleSelectTorrent', infoHash)}>
+        {this.renderTorrentMetadata(torrentSummary)}
+        {infoHash ? this.renderTorrentButtons(torrentSummary) : null}
+        {isSelected ? this.renderTorrentDetails(torrentSummary) : null}
+      </div>
+    )
+  }
+
+  // Show name, download status, % complete
+  renderTorrentMetadata (torrentSummary) {
+    var name = torrentSummary.name || 'Loading torrent...'
+    var elements = [(
+      <div key='name' className='name ellipsis'>{name}</div>
+    )]
+
+    // If it's downloading/seeding then show progress info
+    var prog = torrentSummary.progress
+    if (torrentSummary.status !== 'paused' && prog) {
+      elements.push((
+        <div key='progress-info' className='ellipsis'>
+          {renderPercentProgress()}
+          {renderTotalProgress()}
+          {renderPeers()}
+          {renderDownloadSpeed()}
+          {renderUploadSpeed()}
+          {renderEta()}
+        </div>
+      ))
+    }
+
+    return (<div key='metadata' className='metadata'>{elements}</div>)
+
+    function renderPercentProgress () {
+      var progress = Math.floor(100 * prog.progress)
+      return (<span key='percent-progress'>{progress}%</span>)
+    }
+
+    function renderTotalProgress () {
+      var downloaded = prettyBytes(prog.downloaded)
+      var total = prettyBytes(prog.length || 0)
+      if (downloaded === total) {
+        return (<span key='total-progress'>{downloaded}</span>)
+      } else {
+        return (<span key='total-progress'>{downloaded} / {total}</span>)
+      }
+    }
+
+    function renderPeers () {
+      if (prog.numPeers === 0) return
+      var count = prog.numPeers === 1 ? 'peer' : 'peers'
+      return (<span key='peers'>{prog.numPeers} {count}</span>)
+    }
+
+    function renderDownloadSpeed () {
+      if (prog.downloadSpeed === 0) return
+      return (<span key='download'>↓ {prettyBytes(prog.downloadSpeed)}/s</span>)
+    }
+
+    function renderUploadSpeed () {
+      if (prog.uploadSpeed === 0) return
+      return (<span key='upload'>↑ {prettyBytes(prog.uploadSpeed)}/s</span>)
+    }
+
+    function renderEta () {
+      var downloaded = prog.downloaded
+      var total = prog.length || 0
+      var missing = total - downloaded
+      var downloadSpeed = prog.downloadSpeed
+      if (downloadSpeed === 0 || missing === 0) return
+
+      var rawEta = missing / downloadSpeed
+      var hours = Math.floor(rawEta / 3600) % 24
+      var minutes = Math.floor(rawEta / 60) % 60
+      var seconds = Math.floor(rawEta % 60)
+
+      // Only display hours and minutes if they are greater than 0 but always
+      // display minutes if hours is being displayed
+      var hoursStr = hours ? hours + 'h' : ''
+      var minutesStr = (hours || minutes) ? minutes + 'm' : ''
+      var secondsStr = seconds + 's'
+
+      return (<span>ETA: {hoursStr} {minutesStr} {secondsStr}</span>)
+    }
+  }
+
+  // Download button toggles between torrenting (DL/seed) and paused
+  // Play button starts streaming the torrent immediately, unpausing if needed
+  renderTorrentButtons (torrentSummary) {
+    var infoHash = torrentSummary.infoHash
+
+    var playIcon, playTooltip, playClass
+    if (torrentSummary.playStatus === 'timeout') {
+      playIcon = 'warning'
+      playTooltip = 'Playback timed out. No seeds? No internet? Click to try again.'
+    } else {
+      playIcon = 'play_arrow'
+      playTooltip = 'Start streaming'
+    }
+
+    var downloadIcon, downloadTooltip
+    if (torrentSummary.status === 'seeding') {
+      downloadIcon = 'file_upload'
+      downloadTooltip = 'Seeding. Click to stop.'
+    } else if (torrentSummary.status === 'downloading') {
+      downloadIcon = 'file_download'
+      downloadTooltip = 'Torrenting. Click to stop.'
+    } else {
+      downloadIcon = 'file_download'
+      downloadTooltip = 'Click to start torrenting.'
+    }
+
+    // Do we have a saved position? Show it using a radial progress bar on top
+    // of the play button, unless already showing a spinner there:
+    var positionElem
+    var willShowSpinner = torrentSummary.playStatus === 'requested'
+    var defaultFile = torrentSummary.files &&
+      torrentSummary.files[torrentSummary.defaultPlayFileIndex]
+    if (defaultFile && defaultFile.currentTime && !willShowSpinner) {
+      var fraction = defaultFile.currentTime / defaultFile.duration
+      positionElem = this.renderRadialProgressBar(fraction, 'radial-progress-large')
+      playClass = 'resume-position'
+    }
+
+    // Only show the play button for torrents that contain playable media
+    var playButton
+    if (TorrentPlayer.isPlayableTorrentSummary(torrentSummary)) {
+      playButton = (
+        <i
+          key='play-button'
+          title={playTooltip}
+          className={'button-round icon play ' + playClass}
+          onClick={dispatcher('playFile', infoHash)}>
+          {playIcon}
+        </i>
+      )
+    }
+
+    return (
+      <div key='buttons' className='buttons'>
+        {positionElem}
+        {playButton}
+        <i
+          key='download-button'
+          className={'button-round icon download ' + torrentSummary.status}
+          title={downloadTooltip}
+          onClick={dispatcher('toggleTorrent', infoHash)}>
+          {downloadIcon}
+        </i>
+        <i
+          key='delete-button'
+          className='icon delete'
+          title='Remove torrent'
+          onClick={dispatcher('confirmDeleteTorrent', infoHash, false)}>
+          close
+        </i>
+      </div>
+    )
+  }
+
+  // Show files, per-file download status and play buttons, and so on
+  renderTorrentDetails (torrentSummary) {
+    var filesElement
+    if (!torrentSummary.files) {
+      // We don't know what files this torrent contains
+      var message = torrentSummary.status === 'paused'
+        ? 'Failed to load torrent info. Click the download button to try again...'
+        : 'Downloading torrent info...'
+      filesElement = (<div key='files' className='files warning'>{message}</div>)
+    } else {
+      // We do know the files. List them and show download stats for each one
+      var fileRows = torrentSummary.files
+        .filter((file) => !file.path.includes('/.____padding_file/'))
+        .map((file, index) => ({ file, index }))
+        .sort(function (a, b) {
+          if (a.file.name < b.file.name) return -1
+          if (b.file.name < a.file.name) return 1
+          return 0
+        })
+        .map((object) => this.renderFileRow(torrentSummary, object.file, object.index))
+
+      filesElement = (
+        <div key='files' className='files'>
+          <table>
+            <tbody>
+              {fileRows}
+            </tbody>
+          </table>
+        </div>
+      )
+    }
+
+    return (
+      <div key='details' className='torrent-details'>
+        {filesElement}
+      </div>
+    )
+  }
+
+  // Show a single torrentSummary file in the details view for a single torrent
+  renderFileRow (torrentSummary, file, index) {
+    // First, find out how much of the file we've downloaded
+    // Are we even torrenting it?
+    var isSelected = torrentSummary.selections && torrentSummary.selections[index]
+    var isDone = false // Are we finished torrenting it?
+    var progress = ''
+    if (torrentSummary.progress && torrentSummary.progress.files &&
+        torrentSummary.progress.files[index]) {
+      var fileProg = torrentSummary.progress.files[index]
+      isDone = fileProg.numPiecesPresent === fileProg.numPieces
+      progress = Math.round(100 * fileProg.numPiecesPresent / fileProg.numPieces) + '%'
+    }
+
+    // Second, for media files where we saved our position, show how far we got
+    var positionElem
+    if (file.currentTime) {
+      // Radial progress bar. 0% = start from 0:00, 270% = 3/4 of the way thru
+      positionElem = this.renderRadialProgressBar(file.currentTime / file.duration)
+    }
+
+    // Finally, render the file as a table row
+    var isPlayable = TorrentPlayer.isPlayable(file)
+    var infoHash = torrentSummary.infoHash
+    var icon
+    var handleClick
+    if (isPlayable) {
+      icon = 'play_arrow' /* playable? add option to play */
+      handleClick = dispatcher('playFile', infoHash, index)
+    } else {
+      icon = 'description' /* file icon, opens in OS default app */
+      handleClick = dispatcher('openItem', infoHash, index)
+    }
+    var rowClass = ''
+    if (!isSelected) rowClass = 'disabled' // File deselected, not being torrented
+    if (!isDone && !isPlayable) rowClass = 'disabled' // Can't open yet, can't stream
+    return (
+      <tr key={index} onClick={handleClick}>
+        <td className={'col-icon ' + rowClass}>
+          {positionElem}
+          <i className='icon'>{icon}</i>
+        </td>
+        <td className={'col-name ' + rowClass}>
+          {file.name}
+        </td>
+        <td className={'col-progress ' + rowClass}>
+          {isSelected ? progress : ''}
+        </td>
+        <td className={'col-size ' + rowClass}>
+          {prettyBytes(file.length)}
+        </td>
+        <td className='col-select'
+          onClick={dispatcher('toggleTorrentFile', infoHash, index)}>
+          <i className='icon'>{isSelected ? 'close' : 'add'}</i>
+        </td>
+      </tr>
+    )
+  }
+
+  renderRadialProgressBar (fraction, cssClass) {
+    var rotation = 360 * fraction
+    var transformFill = {transform: 'rotate(' + (rotation / 2) + 'deg)'}
+    var transformFix = {transform: 'rotate(' + rotation + 'deg)'}
+
+    return (
+      <div key='radial-progress' className={'radial-progress ' + cssClass}>
+        <div key='circle' className='circle'>
+          <div key='mask-full' className='mask full' style={transformFill}>
+            <div key='fill' className='fill' style={transformFill}></div>
+          </div>
+          <div key='mask-half' className='mask half'>
+            <div key='fill' className='fill' style={transformFill}></div>
+            <div key='fill-fix' className='fill fix' style={transformFix}></div>
+          </div>
+        </div>
+        <div key='inset' className='inset'></div>
+      </div>
+    )
+  }
+}

src/renderer/views/unsupported-media-modal.js

@@ -0,0 +1,39 @@
+const React = require('react')
+const electron = require('electron')
+
+const {dispatcher} = require('../lib/dispatcher')
+
+module.exports = class UnsupportedMediaModal extends React.Component {
+  render () {
+    var state = this.props.state
+    var err = state.modal.error
+    var message = (err && err.getMessage)
+      ? err.getMessage()
+      : err
+    var actionButton = state.modal.vlcInstalled
+      ? (<button className='button-raised' onClick={dispatcher('vlcPlay')}>Play in VLC</button>)
+      : (<button className='button-raised' onClick={() => this.onInstall}>Install VLC</button>)
+    var vlcMessage = state.modal.vlcNotFound
+      ? 'Couldn\'t run VLC. Please make sure it\'s installed.'
+      : ''
+    return (
+      <div>
+        <p><strong>Sorry, we can't play that file.</strong></p>
+        <p>{message}</p>
+        <p className='float-right'>
+          <button className='button-flat' onClick={dispatcher('backToList')}>Cancel</button>
+          {actionButton}
+        </p>
+        <p className='error-text'>{vlcMessage}</p>
+      </div>
+    )
+  }
+
+  onInstall () {
+    electron.shell.openExternal('http://www.videolan.org/vlc/')
+
+    // TODO: dcposch send a dispatch rather than modifying state directly
+    var state = this.props.state
+    state.modal.vlcInstalled = true // Assume they'll install it successfully
+  }
+}

src/renderer/views/update-available-modal.js

@@ -0,0 +1,30 @@
+const React = require('react')
+const electron = require('electron')
+
+const {dispatch} = require('../lib/dispatcher')
+
+module.exports = class UpdateAvailableModal extends React.Component {
+  render () {
+    var state = this.props.state
+    return (
+      <div className='update-available-modal'>
+        <p><strong>A new version of WebTorrent is available: v{state.modal.version}</strong></p>
+        <p>We have an auto-updater for Windows and Mac. We don't have one for Linux yet, so you'll have to download the new version manually.</p>
+        <p className='float-right'>
+          <button className='button button-flat' onClick={handleCancel}>Skip This Release</button>
+          <button className='button button-raised' onClick={handleOK}>Show Download Page</button>
+        </p>
+      </div>
+    )
+
+    function handleOK () {
+      electron.shell.openExternal('https://github.com/feross/webtorrent-desktop/releases')
+      dispatch('exitModal')
+    }
+
+    function handleCancel () {
+      dispatch('skipVersion', state.modal.version)
+      dispatch('exitModal')
+    }
+  }
+}

src/renderer/webtorrent.js

@@ -2,14 +2,16 @@
 // process from the main window.
 console.time('init')
 
-var WebTorrent = require('webtorrent')
-var defaultAnnounceList = require('create-torrent').announceList
 var deepEqual = require('deep-equal')
+var defaultAnnounceList = require('create-torrent').announceList
 var electron = require('electron')
 var fs = require('fs-extra')
+var hat = require('hat')
 var musicmetadata = require('musicmetadata')
 var networkAddress = require('network-address')
 var path = require('path')
+var WebTorrent = require('webtorrent')
+var zeroFill = require('zero-fill')
 
 var crashReporter = require('../crash-reporter')
 var config = require('../config')
@@ -26,9 +28,36 @@ global.WEBTORRENT_ANNOUNCE = defaultAnnounceList
   .map((arr) => arr[0])
   .filter((url) => url.indexOf('wss://') === 0 || url.indexOf('ws://') === 0)
 
+/**
+ * WebTorrent version.
+ */
+var VERSION = require('../../package.json').version
+
+/**
+ * Version number in Azureus-style. Generated from major and minor semver version.
+ * For example:
+ *   '0.16.1' -> '0016'
+ *   '1.2.5' -> '0102'
+ */
+var VERSION_STR = VERSION.match(/([0-9]+)/g)
+  .slice(0, 2)
+  .map((v) => zeroFill(2, v))
+  .join('')
+
+/**
+ * Version prefix string (used in peer ID). WebTorrent uses the Azureus-style
+ * encoding: '-', two characters for client id ('WW'), four ascii digits for version
+ * number, '-', followed by random numbers.
+ * For example:
+ *   '-WW0102-'...
+ */
+var VERSION_PREFIX = '-WD' + VERSION_STR + '-'
+
 // Connect to the WebTorrent and BitTorrent networks. WebTorrent Desktop is a hybrid
 // client, as explained here: https://webtorrent.io/faq
-var client = new WebTorrent()
+var client = window.client = new WebTorrent({
+  peerId: Buffer.from(VERSION_PREFIX + hat(48))
+})
 
 // WebTorrent-to-HTTP streaming sever
 var server = null
@@ -63,6 +92,10 @@ function init () {
 
   ipc.send('ipcReadyWebTorrent')
 
+  window.addEventListener('error', (e) =>
+    ipc.send('wt-uncaught-error', {message: e.error.message, stack: e.error.stack}),
+    true)
+
   setInterval(updateTorrentProgress, 1000)
 }
 

static/linux/webtorrent-desktop.desktop

@@ -13,7 +13,7 @@ Exec=$EXEC_PATH %U
 TryExec=$TRY_EXEC_PATH
 StartupNotify=false
 Categories=Network;FileTransfer;P2P;
-MimeType=application/x-bittorrent;x-scheme-handler/magnet;
+MimeType=application/x-bittorrent;x-scheme-handler/magnet;x-scheme-handler/stream-magnet;
 
 Actions=CreateNewTorrent;OpenTorrentFile;OpenTorrentAddress;
 

static/main.css

@@ -26,6 +26,13 @@ body {
   line-height: 1.5em;
 }
 
+#body {
+  width: 100%;
+  height: 100%;
+  margin: 0;
+  padding: 0;
+}
+
 table {
   table-layout: fixed;
 }
@@ -82,7 +89,7 @@ table {
   font-weight: 400;
   src: local('Material Icons'),
        local('MaterialIcons-Regular'),
-       url(../static/MaterialIcons-Regular.woff2) format('woff2');
+       url(MaterialIcons-Regular.woff2) format('woff2');
 }
 
 .icon {
@@ -260,7 +267,7 @@ table {
 
 .modal .modal-content {
   position: fixed;
-  top: 45px;
+  top: 38px;
   left: 0;
   right: 0;
   margin: 0 auto;
@@ -326,7 +333,6 @@ table {
 }
 
 .create-torrent input.torrent-is-private {
-  width: initial;
   margin: 0;
 }
 
@@ -404,7 +410,7 @@ button.button-raised:active {
  * OTHER FORM ELEMENT DEFAULTS
  */
 
-input {
+input[type='text'] {
   background: transparent;
   width: 300px;
   padding: 6px;
@@ -486,21 +492,7 @@ input {
 }
 
 .torrent .buttons .download.downloading {
-  animation-name: greenpulse;
-  animation-duration: 0.8s;
-  animation-direction: alternate;
-  animation-iteration-count: infinite;
-}
-
-@keyframes greenpulse {
-  0% {
-    color: #ffffff;
-    padding-top: 4px;
-  }
-  100% {
-    color: #44dd44;
-    padding-top: 6px;
-  }
+  color: #44dd44;
 }
 
 .torrent .buttons .download.seeding {
@@ -620,10 +612,6 @@ body.drag .app::after {
   height: 28px;
 }
 
-.torrent-details td {
-  vertical-align: center;
-}
-
 .torrent-details tr:hover {
   background-color: rgba(200, 200, 200, 0.3);
 }
@@ -641,7 +629,7 @@ body.drag .app::after {
 }
 
 .torrent-details td.col-icon {
-  width: 3em;
+  width: 45px;
   padding-left: 16px;
 }
 
@@ -657,17 +645,17 @@ body.drag .app::after {
 }
 
 .torrent-details td.col-progress {
-  width: 4em;
+  width: 60px;
   text-align: right;
 }
 
 .torrent-details td.col-size {
-  width: 4em;
+  width: 60px;
   text-align: right;
 }
 
 .torrent-details td.col-select {
-  width: 3em;
+  width: 45px;
   padding-right: 13px;
   text-align: right;
 }
@@ -848,7 +836,7 @@ body.drag .app::after {
   height: 14px;
 }
 
-.player .controls .subtitles-list {
+.player .controls .options-list {
   position: fixed;
   background: rgba(40, 40, 40, 0.8);
   min-width: 100px;
@@ -862,7 +850,7 @@ body.drag .app::after {
   color: rgba(255, 255, 255, 0.8);
 }
 
-.player .controls .subtitles-list .icon {
+.player .controls .options-list .icon {
   display: inline;
   font-size: 17px;
   vertical-align: bottom;

static/main.html

@@ -0,0 +1,17 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <title>WebTorrent Desktop</title>
+    <link rel="stylesheet" href="main.css">
+  </head>
+  <body>
+    <!-- React prints a warning if you render to <body> directly -->
+    <div id='body'></div>
+    <!-- We can't just say src='...main.js', that breaks require()s -->
+    <script>
+      require('../build/renderer/main.js')
+    </script>
+  </body>
+</html>

static/webtorrent.html

@@ -3,6 +3,7 @@
   <head>
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width, initial-scale=1">
+    <title>WebTorrent Desktop</title>
     <style>
       body {
         background-color: #282828;
@@ -14,9 +15,11 @@
         height: 140px;
       }
     </style>
+    <script>
+      require('../build/renderer/webtorrent.js')
+    </script>
   </head>
   <body>
-    <script async src="webtorrent.js"></script>
-    <img src="../static/WebTorrent.png">
+    <img alt="WebTorrent" src="WebTorrent.png">
   </body>
 </html>