Expose gallery watching functionality to the public mediaGalleries API.

chrome/test/data/extensions/api_test/media_galleries/gallerywatch/test.js

 // Copyright (c) 2012 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.
 
 var galleries;
 var invalidGalleryId = '11000';
 
 // chrome.mediaGalleries.getMediaFileSystems callback.
 var mediaFileSystemsListCallback = function (results) {
   galleries = results;
   chrome.test.sendMessage('get_media_file_systems_callback_ok');
 };
 
 // Gallery changed event handler.
 var onGalleryChangedCallback = function (details) {
   chrome.test.sendMessage('gallery_changed_event_received');
 };
 
 // Add watch request callback.
 var onAddWatchRequestCallback = function (details) {
-  if (!details || !details.success)
+  if (!details.success) {

[Lei Zhang, 2014/08/25 22:45:21]

flip this block?

if (detauls.success) {
  // success
} else {
  // fail!!!!
}

[Oren Blasberg, 2014/08/26 00:40:49]

Done.

     chrome.test.sendMessage('add_watch_request_failed');
-  else
+  } else {
     chrome.test.sendMessage('add_watch_request_succeeded');
+  }
 };
 
 // chrome.mediaGalleries.getAllGalleryWatch callback.
 var getAllGalleryWatchCallback = function (results) {
   if (!results) {
     chrome.test.sendMessage('get_all_gallery_watch_failed');
     return;
   }
   if (results.length == 0) {
     chrome.test.sendMessage('gallery_watchers_does_not_exists');
   } else {
-    for (var i = 0; i < results.lendth; ++i) {

[Lei Zhang, 2014/08/25 22:45:21]

!! how did this ever work?

[Oren Blasberg, 2014/08/26 00:40:49]

Lol, probably because every number < undefined == false. The cc test probably
wasn't stringent enough before to catch the issue.

+    for (var i = 0; i < results.length; ++i) {
       var info = chrome.mediaGalleries.getMediaFileSystemMetadata(galleries[i]);
       if (results[i] !== info.galleryId) {
         chrome.test.sendMessage('gallery_watcher_mismatch');
         return;
       }
     }
     chrome.test.sendMessage('gallery_watcher_checks');
   }
 };
 
+var onGalleryChangedCheckingCallback = function(result) {
+  if (result.galleryId != '' && result.type == 'contents_changed') {
+    chrome.test.sendMessage('on_gallery_changed_checking_ok');
+  }
+};
+
+
+/**
+ * Generates a callback function which notifies the apitest when the given
+ * number of runtime errors has occurred.
+ *
+ * @param {number} expectedNumCalls The number of calls to this callback to
+ *     expect.
+ * @return {function()}
+ */
+var createUnlistenedAddWatchCallback = function(expectedNumCalls) {
+  var numCalls = 0;
+  var numErrors = 0;
+  return function() {
+    numCalls++;
+    if (chrome.runtime.lastError) {
+      numErrors++;
+    }
+
+    if (numCalls == expectedNumCalls && numErrors == expectedNumCalls) {
+      chrome.test.sendMessage('add_watch_request_runtime_error');
+    }
+  };
+}
+
 // Helpers to add and remove event listeners.
 function addGalleryChangedListener() {
-  chrome.mediaGalleriesPrivate.onGalleryChanged.addListener(
+  chrome.mediaGalleries.onGalleryChanged.addListener(
       onGalleryChangedCallback);
   chrome.test.sendMessage('add_gallery_changed_listener_ok');
 };
 
+function addCheckingGalleryChangedListener() {
+  chrome.mediaGalleries.onGalleryChanged.addListener(
+      onGalleryChangedCheckingCallback);
+  chrome.test.sendMessage('add_gallery_changed_listener_ok');
+};
+
 function setupWatchOnValidGalleries() {
   for (var i = 0; i < galleries.length; ++i) {
     var info = chrome.mediaGalleries.getMediaFileSystemMetadata(galleries[i]);
-    chrome.mediaGalleriesPrivate.addGalleryWatch(info.galleryId,
-                                                 onAddWatchRequestCallback);
+    chrome.mediaGalleries.addGalleryWatch(info.galleryId,
+                                          onAddWatchRequestCallback);
   }
   chrome.test.sendMessage('add_gallery_watch_ok');
 };
 
+function setupWatchOnUnlistenedValidGalleries() {
+  var callback = createUnlistenedAddWatchCallback(galleries.length);
+  for (var i = 0; i < galleries.length; ++i) {
+    var info = chrome.mediaGalleries.getMediaFileSystemMetadata(galleries[i]);
+    chrome.mediaGalleries.addGalleryWatch(info.galleryId, callback);
+  }
+};
+
 function setupWatchOnInvalidGallery() {
-  chrome.mediaGalleriesPrivate.addGalleryWatch(invalidGalleryId,
-                                               onAddWatchRequestCallback);
-  chrome.test.sendMessage('add_gallery_watch_ok');
+  chrome.mediaGalleries.addGalleryWatch(invalidGalleryId,
+                                        onAddWatchRequestCallback);
 }
 
 function getMediaFileSystems() {
   chrome.mediaGalleries.getMediaFileSystems(mediaFileSystemsListCallback);
   chrome.test.sendMessage('get_media_file_systems_ok');
 };
 
 function removeGalleryWatch() {
   for (var i = 0; i < galleries.length; ++i) {
     var info = chrome.mediaGalleries.getMediaFileSystemMetadata(galleries[i]);
-    chrome.mediaGalleriesPrivate.removeGalleryWatch(info.galleryId);
+    chrome.mediaGalleries.removeGalleryWatch(info.galleryId);
   }
   chrome.test.sendMessage('remove_gallery_watch_ok');
 };
 
 function removeGalleryChangedListener() {
-  chrome.mediaGalleriesPrivate.onGalleryChanged.removeListener(
+  chrome.mediaGalleries.onGalleryChanged.removeListener(
       onGalleryChangedCallback);
   chrome.test.sendMessage('remove_gallery_changed_listener_ok');
 };
 
 function getAllWatchedGalleryIds() {
-  chrome.mediaGalleriesPrivate.getAllGalleryWatch(getAllGalleryWatchCallback);
+  chrome.mediaGalleries.getAllGalleryWatch(getAllGalleryWatchCallback);
   chrome.test.sendMessage('get_all_gallery_watch_ok');
 };
 
 function removeAllGalleryWatch() {
-  chrome.mediaGalleriesPrivate.removeAllGalleryWatch();
+  chrome.mediaGalleries.removeAllGalleryWatch();
   chrome.test.sendMessage('remove_all_gallery_watch_ok');
 };