Enabling webview in app_shell.

chrome/renderer/resources/extensions/chrome_web_view.js

 // 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.
 
 // This module implements chrome-specific <webview> API.
 
+var DeclarativeWebRequestSchema =

[lazyboy, 2014/09/12 17:03:57]

Sort these.

[lfg, 2014/09/12 17:18:57]

Done.

+    requireNative('schema_registry').GetSchema('declarativeWebRequest');
 var ChromeWebView = require('chromeWebViewInternal').ChromeWebView;
 var CreateEvent = require('webViewEvents').CreateEvent;
 var EventBindings = require('event_bindings');
+var IdGenerator = requireNative('id_generator');
+var WebRequestEvent = require('webRequestInternal').WebRequestEvent;
+var WebRequestSchema =
+    requireNative('schema_registry').GetSchema('webRequest');
 var WebViewInternal = require('webView').WebViewInternal
 

[lazyboy, 2014/09/12 17:03:57]

nit: remove empty line.

[lazyboy, 2014/09/12 17:17:25]

Wrong comment.

+var WebRequestMessageEvent = CreateEvent('webViewInternal.onMessage');
+
 var CHROME_WEB_VIEW_EVENTS = {
   'contextmenu': {
     evt: CreateEvent('chromeWebViewInternal.contextmenu'),
     cancelable: true,
     customHandler: function(handler, event, webViewEvent) {
       handler.webViewInternal.maybeHandleContextMenu(event, webViewEvent);
     },
     fields: ['items']
   }
 };
@@ skipping 12 matching lines @@
  * This will be overridden in chrome_web_view_experimental.js to implement
  * contextmenu  API.
  */
 WebViewInternal.prototype.maybeHandleContextMenu = function(e, webViewEvent) {
   var requestId = e.requestId;
   // Setting |params| = undefined will show the context menu unmodified, hence
   // the 'contextmenu' API is disabled for stable channel.
   var params = undefined;
   ChromeWebView.showContextMenu(this.guestInstanceId, requestId, params);
 };
+
+function DeclarativeWebRequestEvent(opt_eventName,

[lazyboy, 2014/09/12 17:03:57]

nit: move this and line 68 around to top block of this file, e.g. after
CHROME_WEB_VIEW_EVENTS.

[lfg, 2014/09/12 17:18:57]

Done.

+                                    opt_argSchemas,
+                                    opt_eventOptions,
+                                    opt_webViewInstanceId) {
+  var subEventName = opt_eventName + '/' + IdGenerator.GetNextId();
+  EventBindings.Event.call(this, subEventName, opt_argSchemas, opt_eventOptions,
+      opt_webViewInstanceId);
+
+  // TODO(lazyboy): When do we dispose this listener?
+  WebRequestMessageEvent.addListener(function() {
+    // Re-dispatch to subEvent's listeners.
+    $Function.apply(this.dispatch, this, $Array.slice(arguments));
+  }.bind(this), {instanceId: opt_webViewInstanceId || 0});
+}
+
+DeclarativeWebRequestEvent.prototype = {
+  __proto__: EventBindings.Event.prototype
+};
+
+WebViewInternal.prototype.maybeSetupChromeWebViewEvents = function() {
+  var request = {};
+  var createWebRequestEvent = function(webRequestEvent) {
+    return function() {
+      if (!this[webRequestEvent.name]) {
+        this[webRequestEvent.name] =
+            new WebRequestEvent(
+                'webViewInternal.' + webRequestEvent.name,
+                webRequestEvent.parameters,
+                webRequestEvent.extraParameters, webRequestEvent.options,
+                this.viewInstanceId);
+      }
+      return this[webRequestEvent.name];
+    }.bind(this);
+  }.bind(this);
+
+  var createDeclarativeWebRequestEvent = function(webRequestEvent) {
+    return function() {
+      if (!this[webRequestEvent.name]) {
+        // The onMessage event gets a special event type because we want
+        // the listener to fire only for messages targeted for this particular
+        // <webview>.
+        var EventClass = webRequestEvent.name === 'onMessage' ?
+            DeclarativeWebRequestEvent : EventBindings.Event;
+        this[webRequestEvent.name] =
+            new EventClass(
+                'webViewInternal.' + webRequestEvent.name,
+                webRequestEvent.parameters,
+                webRequestEvent.options,
+                this.viewInstanceId);
+      }
+      return this[webRequestEvent.name];
+    }.bind(this);
+  }.bind(this);
+
+  for (var i = 0; i < DeclarativeWebRequestSchema.events.length; ++i) {
+    var eventSchema = DeclarativeWebRequestSchema.events[i];
+    var webRequestEvent = createDeclarativeWebRequestEvent(eventSchema);
+    Object.defineProperty(
+        request,
+        eventSchema.name,
+        {
+          get: webRequestEvent,
+          enumerable: true
+        }
+    );
+  }
+
+  // Populate the WebRequest events from the API definition.
+  for (var i = 0; i < WebRequestSchema.events.length; ++i) {
+    var webRequestEvent = createWebRequestEvent(WebRequestSchema.events[i]);
+    Object.defineProperty(
+        request,
+        WebRequestSchema.events[i].name,
+        {
+          get: webRequestEvent,
+          enumerable: true
+        }
+    );
+  }
+
+  this.setRequestPropertyOnWebViewNode(request);
+};