1 files changed, 68 insertions, 0 deletions
diff --git a/shared/js/notification_helper.js b/shared/js/notification_helper.js
new file mode 100644
index 0000000..384fbfc
--- /dev/null
+++ b/shared/js/notification_helper.js
@@ -0,0 +1,68 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- /
+/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
+
+'use strict';
+
+/**
+ * Keeping a reference on all active notifications to avoid weird GC issues.
+ * See https://bugzilla.mozilla.org/show_bug.cgi?id=755402
+ */
+
+var NotificationHelper = {
+  _referencesArray: [],
+
+  getIconURI: function nc_getIconURI(app, entryPoint) {
+    var icons = app.manifest.icons;
+
+    if (entryPoint) {
+      icons = app.manifest.entry_points[entryPoint].icons;
+    }
+
+    if (!icons)
+      return null;
+
+    var sizes = Object.keys(icons).map(function parse(str) {
+      return parseInt(str, 10);
+    });
+    sizes.sort(function(x, y) { return y - x; });
+
+    var HVGA = document.documentElement.clientWidth < 480;
+    var index = sizes[HVGA ? sizes.length - 1 : 0];
+    return app.installOrigin + icons[index];
+  },
+
+  send: function nc_send(title, body, icon, clickCB, closeCB) {
+    if (!('mozNotification' in navigator))
+      return;
+
+    var notification = navigator.mozNotification.createNotification(title,
+                                                                    body, icon);
+
+    notification.onclick = (function() {
+      if (clickCB)
+        clickCB();
+
+      this._forget(notification);
+    }).bind(this);
+
+    notification.onclose = (function() {
+      if (closeCB)
+        closeCB();
+
+      this._forget(notification);
+    }).bind(this);
+
+    notification.show();
+    this._keep(notification);
+  },
+
+  _keep: function nc_keep(notification) {
+    this._referencesArray.push(notification);
+  },
+  _forget: function nc_forget(notification) {
+    this._referencesArray.splice(
+      this._referencesArray.indexOf(notification), 1
+    );
+  }
+};
+