Utilizing notifications.onShowSettings() event

chrome/browser/resources/google_now/background.js

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 'use strict';
 
 /**
  * @fileoverview The event page for Google Now for Chrome implementation.
  * The Google Now event page gets Google Now cards from the server and shows
  * them as Chrome notifications.
@@ skipping 61 matching lines @@
  * Time we keep dismissals after successful server dismiss requests.
  */
 var DISMISS_RETENTION_TIME_MS = 20 * 60 * 1000;  // 20 minutes
 
 /**
  * Default period for checking whether the user is opted in to Google Now.
  */
 var DEFAULT_OPTIN_CHECK_PERIOD_SECONDS = 60 * 60 * 24 * 7; // 1 week
 
 /**
+ * URL to open when the user clicked on a link for the our notification
+ * settings.
+ */
+var SETTINGS_URL = 'https://support.google.com/chrome/?p=ib_google_now_welcome';

[robliao, 2013/11/01 22:29:35]

Watch out for merge conflicts here.

+
+/**
  * Names for tasks that can be created by the extension.
  */
 var UPDATE_CARDS_TASK_NAME = 'update-cards';
 var DISMISS_CARD_TASK_NAME = 'dismiss-card';
 var RETRY_DISMISS_TASK_NAME = 'retry-dismiss';
 var STATE_CHANGED_TASK_NAME = 'state-changed';
 var SHOW_ON_START_TASK_NAME = 'show-cards-on-start';
 var ON_PUSH_MESSAGE_START_TASK_NAME = 'on-push-message';
 
 var LOCATION_WATCH_NAME = 'location-watch';
@@ skipping 66 matching lines @@
 wrapper.instrumentChromeApiFunction('notifications.getPermissionLevel', 0);
 wrapper.instrumentChromeApiFunction('notifications.update', 2);
 wrapper.instrumentChromeApiFunction('notifications.getAll', 0);
 wrapper.instrumentChromeApiFunction(
     'notifications.onButtonClicked.addListener', 0);
 wrapper.instrumentChromeApiFunction('notifications.onClicked.addListener', 0);
 wrapper.instrumentChromeApiFunction('notifications.onClosed.addListener', 0);
 wrapper.instrumentChromeApiFunction(
     'notifications.onPermissionLevelChanged.addListener', 0);
 wrapper.instrumentChromeApiFunction(
+    'notifications.onShowSettings.addListener', 0);
+wrapper.instrumentChromeApiFunction(
     'preferencesPrivate.googleGeolocationAccessEnabled.get',
     1);
 wrapper.instrumentChromeApiFunction(
     'preferencesPrivate.googleGeolocationAccessEnabled.onChange.addListener',
     0);
 wrapper.instrumentChromeApiFunction('permissions.contains', 1);
 wrapper.instrumentChromeApiFunction('pushMessaging.onMessage.addListener', 0);
 wrapper.instrumentChromeApiFunction('runtime.onInstalled.addListener', 0);
 wrapper.instrumentChromeApiFunction('runtime.onStartup.addListener', 0);
 wrapper.instrumentChromeApiFunction('tabs.create', 1);
@@ skipping 657 matching lines @@
  */
 function retryPendingDismissals() {
   tasks.add(RETRY_DISMISS_TASK_NAME, function() {
     dismissalAttempts.planForNext(function() {
       processPendingDismissals(function(success) {});
      });
   });
 }
 
 /**
+ * Opens a URL in a new tab.
+ * @param {string} url URL to open.
+ */
+function openUrl(url) {
+  instrumented.tabs.create({url: url}, function(tab) {
+    if (tab)
+      chrome.windows.update(tab.windowId, {focused: true});
+    else
+      chrome.windows.create({url: url, focused: true});
+  });
+}
+
+/**
  * Opens URL corresponding to the clicked part of the notification.
  * @param {string} chromeNotificationId chrome.notifications ID of the card.
  * @param {function(Object): string} selector Function that extracts the url for
  *     the clicked area from the button action URLs info.
  */
 function onNotificationClicked(chromeNotificationId, selector) {
   instrumented.storage.local.get('notificationsData', function(items) {
     var notificationData = items &&
         items.notificationsData &&
         items.notificationsData[chromeNotificationId];
 
     if (!notificationData)
       return;
 
     var url = selector(notificationData.actionUrls);
     if (!url)
       return;
 
-    instrumented.tabs.create({url: url}, function(tab) {
-      if (tab)
-        chrome.windows.update(tab.windowId, {focused: true});
-      else
-        chrome.windows.create({url: url, focused: true});
-    });
+    openUrl(url);
   });
 }
 
 /**
  * Callback for chrome.notifications.onClosed event.
  * @param {string} chromeNotificationId chrome.notifications ID of the card.
  * @param {boolean} byUser Whether the notification was closed by the user.
  */
 function onNotificationClosed(chromeNotificationId, byUser) {
   if (!byUser)
@@ skipping 258 matching lines @@
     });
 
 instrumented.notifications.onClosed.addListener(onNotificationClosed);
 
 instrumented.notifications.onPermissionLevelChanged.addListener(
     function(permissionLevel) {
       console.log('Notifications permissionLevel Change');
       onStateChange();
     });
 
+instrumented.notifications.onShowSettings.addListener(function() {
+  openUrl(SETTINGS_URL);
+});
+
 instrumented.location.onLocationUpdate.addListener(function(position) {
   recordEvent(GoogleNowEvent.LOCATION_UPDATE);
   updateNotificationsCards(position);
 });
 
 instrumented.pushMessaging.onMessage.addListener(function(message) {
   // message.payload will be '' when the extension first starts.
   // Each time after signing in, we'll get latest payload for all channels.
   // So, we need to poll the server only when the payload is non-empty and has
   // changed.
@@ skipping 24 matching lines @@
             lastPollNowPayloads: items.lastPollNowPayloads,
             notificationGroups: items.notificationGroups
           });
 
           updateNotificationsCards();
         }
       });
     });
   }
 });