#4739 Webkit notifications for downloading/seeding complete events

web/javascript/notifications.js

@@ -0,0 +1,40 @@
+var Notifications = {};
+
+$(document).ready(function () {
+  if (!window.webkitNotifications) {
+    return;
+  }
+
+  var notificationsEnabled = (window.webkitNotifications.checkPermission() === 0),
+      toggle = $('#toggle_notifications');
+
+  toggle.show();
+  updateMenuTitle();
+  $(transmission).bind('downloadComplete seedingComplete', function (event, torrent) {
+    var title = (event.type == 'downloadComplete' ? 'Download' : 'Seeding') + ' complete',
+        content = torrent.getName(),
+        notification;
+
+    notification = window.webkitNotifications.createNotification('style/transmission/images/logo.png', title, content);
+    notification.show();
+    setTimeout(function () {
+      notification.cancel();
+    }, 5000);
+  });
+
+  function updateMenuTitle() {
+    toggle.html((notificationsEnabled ? 'Disable' : 'Enable') + ' Notifications');
+  }
+
+  Notifications.toggle = function () {
+    if (window.webkitNotifications.checkPermission() !== 0) {
+      window.webkitNotifications.requestPermission(function () {
+        notificationsEnabled = (window.webkitNotifications.checkPermission() === 0);
+        updateMenuTitle();
+      });
+    } else {
+      notificationsEnabled = !notificationsEnabled;
+      updateMenuTitle();
+    }
+  };
+});

web/javascript/torrent.js

@@ -119,13 +119,26 @@ Torrent.prototype =
 	initialize: function(data)
 	{
 		this.fields = {};
+		this.fieldObservers = {};
 		this.refresh (data);
 	},
 
+	notifyOnFieldChange: function(field, callback) {
+		this.fieldObservers[field] = this.fieldObservers[field] || [];
+		this.fieldObservers[field].push(callback);
+	},
+
 	setField: function(o, name, value)
 	{
+		var i, observer;
+		
 		if (o[name] === value)
 			return false;
+		if (o == this.fields && this.fieldObservers[name] && this.fieldObservers[name].length) {
+			for (i=0; observer=this.fieldObservers[name][i]; ++i) {
+				observer.call(this, value, o[name], name);
+			}
+		}
 		o[name] = value;
 		return true;
 	},

web/javascript/transmission.js

@@ -680,6 +680,10 @@ Transmission.prototype =
 				this.setSortDirection(dir);
 				break;
 
+			case 'toggle_notifications':
+				Notifications && Notifications.toggle();
+				break;
+
 			default:
 				console.log('unhandled: ' + id);
 				break;
@@ -723,6 +727,16 @@ Transmission.prototype =
 				// do we need more info for this torrent?
 				if(!('name' in t.fields) || !('status' in t.fields))
 					needinfo.push(id);
+
+				t.notifyOnFieldChange('status', $.proxy(function (newValue, oldValue) {
+					if (oldValue === Torrent._StatusDownload && (newValue == Torrent._StatusSeed || newValue == Torrent._StatusSeedWait)) {
+						$(this).trigger('downloadComplete', [t]);
+					} else if (oldValue === Torrent._StatusSeed && newValue === Torrent._StatusStopped && t.isFinished()) {
+						$(this).trigger('seedingComplete', [t]);
+					} else {
+						$(this).trigger('statusChange', [t]);
+					}
+				}, this));
 			}
 		}