Source/web/PageWidgetDelegate.h

/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 * notice, this list of conditions and the following disclaimer.
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 * in the documentation and/or other materials provided with the
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 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#ifndef PageWidgetDelegate_h
#define PageWidgetDelegate_h

#include "public/platform/WebCanvas.h"
#include "public/web/WebWidget.h"
#include "wtf/OwnPtr.h"

namespace blink {

class LocalFrame;
class Page;
class PageOverlayList;
class WebGestureEvent;
class WebInputEvent;
class WebKeyboardEvent;
class WebMouseEvent;
class WebMouseWheelEvent;
class WebTouchEvent;

class PageWidgetEventHandler {
public:
    virtual void handleMouseMove(LocalFrame& mainFrame, const WebMouseEvent&);
    virtual void handleMouseLeave(LocalFrame& mainFrame, const WebMouseEvent&);
    virtual void handleMouseDown(LocalFrame& mainFrame, const WebMouseEvent&);
    virtual void handleMouseUp(LocalFrame& mainFrame, const WebMouseEvent&);
    virtual bool handleMouseWheel(LocalFrame& mainFrame, const WebMouseWheelEvent&);
    virtual bool handleKeyEvent(const WebKeyboardEvent&) = 0;
    virtual bool handleCharEvent(const WebKeyboardEvent&) = 0;
    virtual bool handleGestureEvent(const WebGestureEvent&) = 0;
    virtual bool handleTouchEvent(LocalFrame& mainFrame, const WebTouchEvent&);
    virtual ~PageWidgetEventHandler() { }
};


// Common implementation of WebViewImpl and WebPagePopupImpl.
class PageWidgetDelegate {
public:
    // rootFrame arguments indicate a root localFrame from which to start performing the
    // specified operation. If rootFrame is 0, these methods will attempt to use the
    // Page's mainFrame(), if it is a LocalFrame.
    static void animate(Page&, double monotonicFrameBeginTime, LocalFrame& root);
    static void layout(Page&, LocalFrame& root);
    static void paint(Page&, PageOverlayList*, WebCanvas*, const WebRect&, LocalFrame& root);
    static bool handleInputEvent(PageWidgetEventHandler&, const WebInputEvent&, LocalFrame* root);

private:
    PageWidgetDelegate() { }
};

}
#endif