1 files changed, 84 insertions, 0 deletions
diff --git a/chromium/chrome/browser/resources/chromeos/chromevox/chromevox/injected/init_document.js b/chromium/chrome/browser/resources/chromeos/chromevox/chromevox/injected/init_document.js
new file mode 100644
index 00000000000..411918376ed
--- /dev/null
+++ b/chromium/chrome/browser/resources/chromeos/chromevox/chromevox/injected/init_document.js
@@ -0,0 +1,84 @@
+// Copyright 2014 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.
+
+/**
+ * @fileoverview Initializes the injected content script on the document.
+ *
+ * NOTE(deboer): This file will automatically initialize ChromeVox.  If you can
+ * control when ChromeVox starts, consider using cvox.InitGlobals instead.
+ *
+ */
+
+goog.provide('cvox.ChromeVoxInit');
+
+goog.require('cvox.ChromeVox');
+goog.require('cvox.HostFactory');
+goog.require('cvox.InitGlobals');
+
+cvox.ChromeVox.initTimeout_ = 100;
+
+/**
+ * Call the init function later, safely
+ * @private
+ */
+cvox.ChromeVox.recallInit_ = function(reason) {
+  window.console.log(reason +
+                     ' Will try again in ' +
+                     cvox.ChromeVox.initTimeout_ + 'ms');
+  window.setTimeout(cvox.ChromeVox.initDocument, cvox.ChromeVox.initTimeout_);
+  cvox.ChromeVox.initTimeout_ *= 2;
+};
+
+
+/**
+ * Initializes cvox.ChromeVox when the document is ready.
+ */
+cvox.ChromeVox.initDocument = function() {
+  if (!document.body) {
+    cvox.ChromeVox.recallInit_('ChromeVox not starting on unloaded page: ' +
+        document.location.href + '.');
+    return;
+  }
+
+  // Setup globals
+  cvox.ChromeVox.host = cvox.HostFactory.getHost();
+
+  if (!cvox.ChromeVox.host.ttsLoaded()) {
+    cvox.ChromeVox.recallInit_('ChromeVox not starting; waiting for TTS. ' +
+                               document.location.href + '.');
+    return;
+  }
+
+  window.console.log('Starting ChromeVox.');
+
+  cvox.InitGlobals.initGlobals();
+
+  // Add a global function to disable this instance of ChromeVox.
+  // There is a scenario where two copies of the content script can get
+  // loaded into the same tab on browser startup - one automatically
+  // and one because the background page injects the content script into
+  // every tab on startup. This allows the background page to first deactivate
+  // any existing copy of the content script (if any) before loading it again,
+  // otherwise there can be duplicate event listeners.
+  window.disableChromeVox = function() {
+    cvox.ChromeVox.host.killChromeVox();
+  };
+};
+
+
+/**
+ * Reinitialize ChromeVox, if the extension is disabled and then enabled
+ * again, but our injected page script has remained.
+ */
+cvox.ChromeVox.reinit = function() {
+  cvox.ChromeVox.host.reinit();
+  cvox.ChromeVox.initDocument();
+};
+
+if (!COMPILED) {
+  // NOTE(deboer): This is called when this script is loaded, automatically
+  // starting ChromeVox. If this isn't the uncompiled script, it will be
+  // called in loader.js.
+  cvox.ChromeVox.initDocument();
+}