<webview>: Implement ExecuteScript

chrome/renderer/resources/extensions/web_view.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.
 
 // Shim that simulates a <webview> tag via Mutation Observers.
 //
 // The actual tag is implemented via the browser plugin. The internals of this
 // are hidden via Shadow DOM.
 
 var watchForTag = require("tagWatcher").watchForTag;
+var sendRequest = require("sendRequest").sendRequest;
 
 var WEB_VIEW_ATTRIBUTES = ['name', 'src', 'partition'];
 
 // All exposed api methods for <webview>, these are forwarded to the browser
 // plugin.
 var WEB_VIEW_API_METHODS = [
   'back',
   'canGoBack',
   'canGoForward',
   'forward',
@@ skipping 43 matching lines @@
 
   // this.objectNode_[apiMethod] are not necessarily defined immediately after
   // the shadow object is appended to the shadow root.
   var self = this;
   WEB_VIEW_API_METHODS.forEach(function(apiMethod) {
     node[apiMethod] = function(var_args) {
       return self.objectNode_[apiMethod].apply(self.objectNode_, arguments);
     };
   }, this);
 
+  node['executeScript'] = function(var_args) {
+    var args = [self.objectNode_.getProcessId(),
+                self.objectNode_.getRouteId()].concat(
+                    Array.prototype.slice.call(arguments));
+    sendRequest('webview.executeScript', args,
+                [{ "type": "integer", "name": "processId" },
+                 { "type": "integer", "name": "routeId" },
+                 { "type": "object", "name": "details" },
+                 { "type": "function", "name": "callback", "optional": true }]);

[Matt Perry, 2013/01/23 02:50:49]

If you need to expose more APIs to webview, I recommend moving this to a .json
file and parsing it like the other APIs.

[Fady Samuel, 2013/01/23 20:12:03]

Done.

+  }
+
   // Map attribute modifications on the <webview> tag to property changes in
   // the underlying <object> node.
   var handleMutation = this.handleMutation_.bind(this);
   var observer = new WebKitMutationObserver(function(mutations) {
     mutations.forEach(handleMutation);
   });
   observer.observe(
       this.node_,
       {attributes: true, attributeFilter: WEB_VIEW_ATTRIBUTES});
 
@@ skipping 73 matching lines @@
   var node = this.node_;
   this.objectNode_.addEventListener('-internal-' + eventname, function(e) {
     var evt = new Event(eventname);
     var detail = e.detail ? JSON.parse(e.detail) : {};
     attribs.forEach(function(attribName) {
       evt[attribName] = detail[attribName];
     });
     node.dispatchEvent(evt);
   });
 }