Applescript: return value from execute javascript command

content/browser/renderer_host/render_view_host.h

 // Copyright (c) 2011 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H_
 #pragma once
 
 #include <string>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "base/process_util.h"
+#include "base/values.h"
 #include "content/browser/renderer_host/render_widget_host.h"
 #include "content/common/content_export.h"
+#include "content/public/browser/notification_observer.h"
 #include "content/public/common/window_container_type.h"
 #include "net/base/load_states.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebConsoleMessage.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDragOperation.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPopupType.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebTextDirection.h"
 #include "webkit/glue/webaccessibility.h"
 #include "webkit/glue/window_open_disposition.h"
 
 class ChildProcessSecurityPolicy;
@@ skipping 37 matching lines @@
 
 namespace WebKit {
 struct WebMediaPlayerAction;
 struct WebFindOptions;
 }  // namespace WebKit
 
 namespace net {
 class URLRequestContextGetter;
 }
 
+// NotificationObserver used to listen for EXECUTE_JAVASCRIPT_RESULT
+// notifications.
+class ExecuteNotificationObserver : public content::NotificationObserver {
+ public:
+  explicit ExecuteNotificationObserver(int id);
+  virtual ~ExecuteNotificationObserver();
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details);
+
+  int id() const { return id_; }
+
+  Value* value() const { return value_.get(); }
+
+ private:
+  int id_;
+  scoped_ptr<Value> value_;
+
+  DISALLOW_COPY_AND_ASSIGN(ExecuteNotificationObserver);
+};
+
 //
 // RenderViewHost
 //
 //  A RenderViewHost is responsible for creating and talking to a RenderView
 //  object in a child process. It exposes a high level API to users, for things
 //  like loading pages, adjusting the display and other browser functionality,
 //  which it translates into IPC messages sent over the IPC channel with the
 //  RenderView. It responds to all IPC messages sent by that RenderView and
 //  cracks them, calling a delegate object back with higher level types where
 //  possible.
@@ skipping 166 matching lines @@
 
   // Runs some javascript within the context of a frame in the page.
   void ExecuteJavascriptInWebFrame(const string16& frame_xpath,
                                    const string16& jscript);
 
   // Runs some javascript within the context of a frame in the page. The result
   // is sent back via the notification EXECUTE_JAVASCRIPT_RESULT.
   int ExecuteJavascriptInWebFrameNotifyResult(const string16& frame_xpath,
                                               const string16& jscript);
 
+  Value* ExecuteJavascriptAndGetValue(const string16& frame_xpath,
+                                      const string16& jscript);
+
+
   // Notifies the RenderView that the JavaScript message that was shown was
   // closed by the user.
   void JavaScriptDialogClosed(IPC::Message* reply_msg,
                               bool success,
                               const string16& user_input);
 
   // Notifies the renderer that a a drag operation that it started has ended,
   // either in a drop or by being cancelled.
   void DragSourceEndedAt(
       int client_x, int client_y, int screen_x, int screen_y,
@@ skipping 372 matching lines @@
   typedef std::map<int64, PowerSaveBlocker*> PowerSaveBlockerMap;
   PowerSaveBlockerMap power_save_blockers_;
 
   // A list of observers that filter messages.  Weak references.
   ObserverList<RenderViewHostObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewHost);
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H_