1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef CONTENT_RENDERER_WEB_UI_MOJO_H_
6 #define CONTENT_RENDERER_WEB_UI_MOJO_H_
10 #include "content/public/renderer/render_frame_observer.h"
11 #include "content/public/renderer/render_view_observer.h"
12 #include "content/public/renderer/render_view_observer_tracker.h"
13 #include "mojo/public/cpp/system/core.h"
21 class WebUIMojoContextState
;
23 // WebUIMojo is responsible for enabling the renderer side of mojo bindings.
24 // It creates (and destroys) a WebUIMojoContextState at the appropriate times
25 // and handles the necessary browser messages. WebUIMojo destroys itself when
26 // the RendererView it is created with is destroyed.
28 : public RenderViewObserver
,
29 public RenderViewObserverTracker
<WebUIMojo
> {
31 explicit WebUIMojo(RenderView
* render_view
);
34 class MainFrameObserver
: public RenderFrameObserver
{
36 explicit MainFrameObserver(WebUIMojo
* web_ui_mojo
);
37 virtual ~MainFrameObserver();
39 // RenderFrameObserver overrides:
40 virtual void WillReleaseScriptContext(v8::Handle
<v8::Context
> context
,
41 int world_id
) OVERRIDE
;
42 virtual void DidFinishDocumentLoad() OVERRIDE
;
45 WebUIMojo
* web_ui_mojo_
;
47 DISALLOW_COPY_AND_ASSIGN(MainFrameObserver
);
52 void CreateContextState();
53 void DestroyContextState(v8::Handle
<v8::Context
> context
);
55 // Invoked when the frame finishes loading. Invokes Run() on the
56 // WebUIMojoContextState.
57 void OnDidFinishDocumentLoad();
59 WebUIMojoContextState
* GetContextState();
61 // RenderViewObserver overrides:
62 virtual void DidCreateDocumentElement(blink::WebLocalFrame
* frame
) OVERRIDE
;
63 virtual void DidClearWindowObject(blink::WebLocalFrame
* frame
) OVERRIDE
;
65 MainFrameObserver main_frame_observer_
;
67 DISALLOW_COPY_AND_ASSIGN(WebUIMojo
);
70 } // namespace content
72 #endif // CONTENT_RENDERER_WEB_UI_MOJO_H_