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// 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.
#ifndef CONTENT_PUBLIC_RENDERER_RENDER_VIEW_OBSERVER_H_
#define CONTENT_PUBLIC_RENDERER_RENDER_VIEW_OBSERVER_H_
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "content/common/content_export.h"
#include "ipc/ipc_listener.h"
#include "ipc/ipc_sender.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebIconURL.h"
namespace ppapi {
namespace host {
class PpapiHost;
}
}
namespace WebKit {
class WebDataSource;
class WebFrame;
class WebFormElement;
class WebMediaPlayerClient;
class WebMouseEvent;
class WebNode;
class WebTouchEvent;
class WebURL;
struct WebContextMenuData;
struct WebURLError;
}
namespace content {
class RendererPpapiHost;
class RenderView;
class RenderViewImpl;
// Base class for objects that want to filter incoming IPCs, and also get
// notified of changes to the frame.
class CONTENT_EXPORT RenderViewObserver : public IPC::Listener,
public IPC::Sender {
public:
// By default, observers will be deleted when the RenderView goes away. If
// they want to outlive it, they can override this function.
virtual void OnDestruct();
// These match the WebKit API notifications
virtual void DidStartLoading() {}
virtual void DidStopLoading() {}
virtual void DidChangeIcon(WebKit::WebFrame* frame,
WebKit::WebIconURL::Type) {}
virtual void DidFinishDocumentLoad(WebKit::WebFrame* frame) {}
virtual void DidFailLoad(WebKit::WebFrame* frame,
const WebKit::WebURLError& error) {}
virtual void DidFinishLoad(WebKit::WebFrame* frame) {}
virtual void DidStartProvisionalLoad(WebKit::WebFrame* frame) {}
virtual void DidFailProvisionalLoad(WebKit::WebFrame* frame,
const WebKit::WebURLError& error) {}
virtual void DidCommitProvisionalLoad(WebKit::WebFrame* frame,
bool is_new_navigation) {}
virtual void DidClearWindowObject(WebKit::WebFrame* frame) {}
virtual void WillPerformClientRedirect(
WebKit::WebFrame* frame, const WebKit::WebURL& from,
const WebKit::WebURL& to, double interval, double fire_time) {}
virtual void DidCancelClientRedirect(WebKit::WebFrame* frame) {}
virtual void DidCompleteClientRedirect(WebKit::WebFrame* frame,
const WebKit::WebURL& from) {}
virtual void DidCreateDocumentElement(WebKit::WebFrame* frame) {}
virtual void FrameCreated(WebKit::WebFrame* parent,
WebKit::WebFrame* frame) {}
virtual void FrameDetached(WebKit::WebFrame* frame) {}
virtual void FrameWillClose(WebKit::WebFrame* frame) {}
virtual void WillSubmitForm(WebKit::WebFrame* frame,
const WebKit::WebFormElement& form) {}
virtual void DidCreateDataSource(WebKit::WebFrame* frame,
WebKit::WebDataSource* ds) {}
virtual void PrintPage(WebKit::WebFrame* frame, bool user_initiated) {}
virtual void FocusedNodeChanged(const WebKit::WebNode& node) {}
virtual void WillCreateMediaPlayer(WebKit::WebFrame* frame,
WebKit::WebMediaPlayerClient* client) {}
virtual void ZoomLevelChanged() {};
virtual void DidChangeScrollOffset(WebKit::WebFrame* frame) {}
virtual void DraggableRegionsChanged(WebKit::WebFrame* frame) {}
virtual void DidRequestShowContextMenu(
WebKit::WebFrame* frame,
const WebKit::WebContextMenuData& data) {}
// These match the RenderView methods.
virtual void DidHandleMouseEvent(const WebKit::WebMouseEvent& event) {}
virtual void DidHandleTouchEvent(const WebKit::WebTouchEvent& event) {}
virtual void DidCreatePepperPlugin(RendererPpapiHost* host) {}
// These match incoming IPCs.
virtual void Navigate(const GURL& url) {}
virtual void ClosePage() {}
// IPC::Listener implementation.
virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
protected:
explicit RenderViewObserver(RenderView* render_view);
virtual ~RenderViewObserver();
// IPC::Sender implementation.
virtual bool Send(IPC::Message* message) OVERRIDE;
RenderView* render_view();
int routing_id() { return routing_id_; }
private:
friend class RenderViewImpl;
// This is called by the RenderView when it's going away so that this object
// can null out its pointer.
void RenderViewGone();
RenderView* render_view_;
// The routing ID of the associated RenderView.
int routing_id_;
DISALLOW_COPY_AND_ASSIGN(RenderViewObserver);
};
} // namespace content
#endif // CONTENT_PUBLIC_RENDERER_RENDER_VIEW_OBSERVER_H_
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