1 // Copyright (c) 2012 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_PUBLIC_RENDERER_RENDER_VIEW_OBSERVER_H_
6 #define CONTENT_PUBLIC_RENDERER_RENDER_VIEW_OBSERVER_H_
8 #include "base/basictypes.h"
9 #include "base/compiler_specific.h"
10 #include "content/common/content_export.h"
11 #include "ipc/ipc_listener.h"
12 #include "ipc/ipc_sender.h"
13 #include "third_party/WebKit/public/platform/WebVector.h"
14 #include "third_party/WebKit/public/web/WebIconURL.h"
28 class WebGestureEvent;
29 class WebMediaPlayerClient;
34 struct WebContextMenuData;
40 class RendererPpapiHost;
44 // Base class for objects that want to filter incoming IPCs, and also get
45 // notified of changes to the frame.
46 class CONTENT_EXPORT RenderViewObserver : public IPC::Listener,
49 // By default, observers will be deleted when the RenderView goes away. If
50 // they want to outlive it, they can override this function.
51 virtual void OnDestruct();
53 // These match the WebKit API notifications
54 virtual void DidStartLoading() {}
55 virtual void DidStopLoading() {}
56 virtual void DidFinishDocumentLoad(blink::WebFrame* frame) {}
57 virtual void DidFailLoad(blink::WebFrame* frame,
58 const blink::WebURLError& error) {}
59 virtual void DidFinishLoad(blink::WebFrame* frame) {}
60 virtual void DidStartProvisionalLoad(blink::WebFrame* frame) {}
61 virtual void DidFailProvisionalLoad(blink::WebFrame* frame,
62 const blink::WebURLError& error) {}
63 virtual void DidCommitProvisionalLoad(blink::WebFrame* frame,
64 bool is_new_navigation) {}
65 virtual void DidClearWindowObject(blink::WebFrame* frame, int world_id) {}
66 virtual void DidCreateDocumentElement(blink::WebFrame* frame) {}
67 virtual void FrameCreated(blink::WebFrame* parent,
68 blink::WebFrame* frame) {}
69 virtual void FrameDetached(blink::WebFrame* frame) {}
70 virtual void FrameWillClose(blink::WebFrame* frame) {}
71 virtual void DidMatchCSS(
72 blink::WebFrame* frame,
73 const blink::WebVector<blink::WebString>& newly_matching_selectors,
74 const blink::WebVector<blink::WebString>& stopped_matching_selectors) {}
75 virtual void WillSendSubmitEvent(blink::WebFrame* frame,
76 const blink::WebFormElement& form) {}
77 virtual void WillSubmitForm(blink::WebFrame* frame,
78 const blink::WebFormElement& form) {}
79 virtual void DidCreateDataSource(blink::WebFrame* frame,
80 blink::WebDataSource* ds) {}
81 virtual void PrintPage(blink::WebFrame* frame, bool user_initiated) {}
82 virtual void FocusedNodeChanged(const blink::WebNode& node) {}
83 virtual void WillCreateMediaPlayer(blink::WebFrame* frame,
84 blink::WebMediaPlayerClient* client) {}
85 virtual void ZoomLevelChanged() {};
86 virtual void DidChangeScrollOffset(blink::WebFrame* frame) {}
87 virtual void DraggableRegionsChanged(blink::WebFrame* frame) {}
88 virtual void DidRequestShowContextMenu(
89 blink::WebFrame* frame,
90 const blink::WebContextMenuData& data) {}
91 virtual void DidCommitCompositorFrame() {}
92 virtual void DidUpdateLayout() {}
94 // These match the RenderView methods.
95 virtual void DidHandleMouseEvent(const blink::WebMouseEvent& event) {}
96 virtual void DidHandleTouchEvent(const blink::WebTouchEvent& event) {}
98 // Called when we receive a console message from WebKit for which we requested
99 // extra details (like the stack trace). |message| is the error message,
100 // |source| is the WebKit-reported source of the error (either external or
101 // internal), and |stack_trace| is the stack trace of the error in a
102 // human-readable format (each frame is formatted as
103 // "\n at function_name (source:line_number:column_number)").
104 virtual void DetailedConsoleMessageAdded(const base::string16& message,
105 const base::string16& source,
106 const base::string16& stack_trace,
108 int32 severity_level) {}
110 // These match incoming IPCs.
111 virtual void Navigate(const GURL& url) {}
112 virtual void ClosePage() {}
113 virtual void OrientationChangeEvent(int orientation) {}
115 virtual void OnStop() {}
117 // IPC::Listener implementation.
118 virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
120 // IPC::Sender implementation.
121 virtual bool Send(IPC::Message* message) OVERRIDE;
123 RenderView* render_view() const;
124 int routing_id() const { return routing_id_; }
127 explicit RenderViewObserver(RenderView* render_view);
128 virtual ~RenderViewObserver();
131 friend class RenderViewImpl;
133 // This is called by the RenderView when it's going away so that this object
134 // can null out its pointer.
135 void RenderViewGone();
137 RenderView* render_view_;
138 // The routing ID of the associated RenderView.
141 DISALLOW_COPY_AND_ASSIGN(RenderViewObserver);
144 } // namespace content
146 #endif // CONTENT_PUBLIC_RENDERER_RENDER_VIEW_OBSERVER_H_