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      1 /*
      2  * Copyright (C) 2012 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef PageWidgetDelegate_h
     32 #define PageWidgetDelegate_h
     33 
     34 #include "core/page/Page.h"
     35 #include "public/platform/WebCanvas.h"
     36 #include "public/web/WebWidget.h"
     37 #include "wtf/OwnPtr.h"
     38 
     39 namespace WebCore {
     40 class LocalFrame;
     41 class Page;
     42 }
     43 
     44 namespace blink {
     45 
     46 class PageOverlayList;
     47 class WebGestureEvent;
     48 class WebInputEvent;
     49 class WebKeyboardEvent;
     50 class WebMouseEvent;
     51 class WebMouseWheelEvent;
     52 class WebTouchEvent;
     53 
     54 class PageWidgetEventHandler {
     55 public:
     56     virtual void handleMouseMove(WebCore::LocalFrame& mainFrame, const WebMouseEvent&);
     57     virtual void handleMouseLeave(WebCore::LocalFrame& mainFrame, const WebMouseEvent&);
     58     virtual void handleMouseDown(WebCore::LocalFrame& mainFrame, const WebMouseEvent&);
     59     virtual void handleMouseUp(WebCore::LocalFrame& mainFrame, const WebMouseEvent&);
     60     virtual bool handleMouseWheel(WebCore::LocalFrame& mainFrame, const WebMouseWheelEvent&);
     61     virtual bool handleKeyEvent(const WebKeyboardEvent&) = 0;
     62     virtual bool handleCharEvent(const WebKeyboardEvent&) = 0;
     63     virtual bool handleGestureEvent(const WebGestureEvent&) = 0;
     64     virtual bool handleTouchEvent(WebCore::LocalFrame& mainFrame, const WebTouchEvent&);
     65     virtual ~PageWidgetEventHandler() { }
     66 };
     67 
     68 
     69 // Common implementation of WebViewImpl and WebPagePopupImpl.
     70 class PageWidgetDelegate {
     71 public:
     72     enum CanvasBackground {
     73         Opaque,
     74         Translucent,
     75     };
     76     static void animate(WebCore::Page*, double monotonicFrameBeginTime);
     77     static void layout(WebCore::Page*);
     78     static void paint(WebCore::Page*, PageOverlayList*, WebCanvas*, const WebRect&, CanvasBackground);
     79     static bool handleInputEvent(WebCore::Page*, PageWidgetEventHandler&, const WebInputEvent&);
     80 
     81 private:
     82     PageWidgetDelegate() { }
     83 };
     84 
     85 }
     86 #endif
     87