Bug 735947 - support the desktop notifications API in b2g [r=vingtetun]

b2g/chrome/content/shell.js

@@ -66,7 +66,7 @@ function startupHttpd(baseDir, port) {
 function addPermissions(urls) {
   let permissions = [
     'indexedDB', 'indexedDB-unlimited', 'webapps-manage', 'offline-app',
-    'content-camera', 'webcontacts-manage', 'wifi-manage'
+    'content-camera', 'webcontacts-manage', 'wifi-manage', 'desktop-notification'
   ];
   urls.forEach(function(url) {
     let uri = Services.io.newURI(url, null, null);
@@ -165,6 +165,8 @@ var shell = {
       dump('Error loading ' + frameScriptUrl + ' as a frame script: ' + e + '\n');
     }
 
+    CustomEventManager.init();
+
     let browser = this.contentBrowser;
     browser.homePage = homeURL;
     browser.goHome();
@@ -421,3 +423,53 @@ Services.obs.addObserver(function onConsoleAPILogEvent(subject, topic, data) {
   serverSocket.asyncListen(listener);
 })();
 
+CustomEventManager = {
+  init: function custevt_init() {
+    window.addEventListener("ContentStart", (function(evt) {
+      content.addEventListener("mozContentEvent", this, false, true);
+    }).bind(this), false);
+  },
+
+  handleEvent: function custevt_handleEvent(evt) {
+    let detail = evt.detail;
+    dump("XXX FIXME : Got a mozContentEvent: " + detail.type);
+
+    switch(detail.type) {
+      case "desktop-notification-click":
+      case "desktop-notification-close":
+        AlertsHelper.handleEvent(detail);
+        break;
+    }
+  }
+}
+
+AlertsHelper = {
+  _listeners: {},
+  _count: 0,
+
+  handleEvent: function alert_handleEvent(detail) {
+    if (!detail || !detail.id)
+      return;
+
+    let listener = this._listeners[detail.id];
+    let topic = detail.type == "desktop-notification-click" ? "alertclickcallback" : "alertfinished";
+    listener.observer.observe(null, topic, listener.cookie);
+
+    // we're done with this notification
+    if (topic === "alertfinished")
+      delete this._listeners[detail.id];
+  },
+
+  registerListener: function alert_registerListener(cookie, alertListener) {
+    let id = "alert" + this._count++;
+    this._listeners[id] = { observer: alertListener, cookie: cookie };
+    return id;
+  },
+
+  showAlertNotification: function alert_showAlertNotification(imageUrl, title, text, textClickable, 
+                                                              cookie, alertListener, name) {
+    let id = this.registerListener(cookie, alertListener);
+    shell.sendEvent(content, "mozChromeEvent", { type: "desktop-notification", id: id, icon: imageUrl, 
+                                                 title: title, text: text } );
+  }
+}

b2g/components/AlertsService.js

@@ -0,0 +1,27 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+ 
+const Ci = Components.interfaces;
+const Cu = Components.utils;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+
+// -----------------------------------------------------------------------
+// Alerts Service
+// -----------------------------------------------------------------------
+
+function AlertsService() { }
+
+AlertsService.prototype = {
+  classID: Components.ID("{5dce03b2-8faa-4b6e-9242-6ddb0411750c}"),
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsIAlertsService]),
+
+  showAlertNotification: function(aImageUrl, aTitle, aText, aTextClickable, aCookie, aAlertListener, aName) {
+    let browser = Services.wm.getMostRecentWindow("navigator:browser");
+    browser.AlertsHelper.showAlertNotification(aImageUrl, aTitle, aText, aTextClickable, aCookie, aAlertListener, aName);
+  }
+};
+
+const NSGetFactory = XPCOMUtils.generateNSGetFactory([AlertsService]);

b2g/components/B2GComponents.manifest

@@ -5,3 +5,11 @@ category agent-style-sheets browser-content-stylesheet chrome://browser/content/
 component {eff4231b-abce-4f7f-a40a-d646e8fde3ce} CameraContent.js
 contract @mozilla.org/b2g-camera-content;1 {eff4231b-abce-4f7f-a40a-d646e8fde3ce}
 category JavaScript-navigator-property mozCamera @mozilla.org/b2g-camera-content;1
+
+# AlertsService.js
+component {5dce03b2-8faa-4b6e-9242-6ddb0411750c} AlertsService.js
+contract @mozilla.org/alerts-service;1 {5dce03b2-8faa-4b6e-9242-6ddb0411750c}
+
+# ContentPermissionPrompt.js
+component {8c719f03-afe0-4aac-91ff-6c215895d467} ContentPermissionPrompt.js
+contract @mozilla.org/content-permission/prompt;1 {8c719f03-afe0-4aac-91ff-6c215895d467}

b2g/components/ContentPermissionPrompt.js

@@ -0,0 +1,45 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+const Ci = Components.interfaces;
+const Cr = Components.results;
+const Cu = Components.utils;
+const Cc = Components.classes;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+
+function ContentPermissionPrompt() {}
+
+ContentPermissionPrompt.prototype = {
+
+  handleExistingPermission: function handleExistingPermission(request) {
+    let result = Services.perms.testExactPermission(request.uri, request.type);
+    if (result == Ci.nsIPermissionManager.ALLOW_ACTION) {
+      request.allow();
+      return true;
+    }
+    if (result == Ci.nsIPermissionManager.DENY_ACTION) {
+      request.cancel();
+      return true;
+    }
+    return false;
+  },
+
+  prompt: function(request) {
+    // returns true if the request was handled
+    if (this.handleExistingPermission(request))
+       return;
+
+    // TODO : show UI to grant or deny permission
+  },
+
+  classID: Components.ID("{8c719f03-afe0-4aac-91ff-6c215895d467}"),
+
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsIContentPermissionPrompt])
+};
+
+
+//module initialization
+const NSGetFactory = XPCOMUtils.generateNSGetFactory([ContentPermissionPrompt]);

b2g/components/Makefile.in

@@ -51,6 +51,8 @@ XPIDLSRCS = \
 EXTRA_PP_COMPONENTS = \
         B2GComponents.manifest \
         CameraContent.js \
+        AlertsService.js \
+        ContentPermissionPrompt.js \
         $(NULL)
 
 include $(topsrcdir)/config/rules.mk

b2g/installer/package-manifest.in

@@ -615,3 +615,5 @@ bin/components/@DLL_PREFIX@nkgnomevfs@DLL_SUFFIX@
 @BINPATH@/components/B2GComponents.manifest
 @BINPATH@/components/B2GComponents.xpt
 @BINPATH@/components/CameraContent.js
+@BINPATH@/components/AlertsService.js
+@BINPATH@/components/ContentPermissionPrompt.js