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 "public/platform/WebCanvas.h" 35 #include "public/web/WebWidget.h" 36 #include "wtf/OwnPtr.h" 37 38 namespace blink { 39 40 class LocalFrame; 41 class Page; 42 class PageOverlayList; 43 class WebGestureEvent; 44 class WebInputEvent; 45 class WebKeyboardEvent; 46 class WebMouseEvent; 47 class WebMouseWheelEvent; 48 class WebTouchEvent; 49 50 class PageWidgetEventHandler { 51 public: 52 virtual void handleMouseMove(LocalFrame& mainFrame, const WebMouseEvent&); 53 virtual void handleMouseLeave(LocalFrame& mainFrame, const WebMouseEvent&); 54 virtual void handleMouseDown(LocalFrame& mainFrame, const WebMouseEvent&); 55 virtual void handleMouseUp(LocalFrame& mainFrame, const WebMouseEvent&); 56 virtual bool handleMouseWheel(LocalFrame& mainFrame, const WebMouseWheelEvent&); 57 virtual bool handleKeyEvent(const WebKeyboardEvent&) = 0; 58 virtual bool handleCharEvent(const WebKeyboardEvent&) = 0; 59 virtual bool handleGestureEvent(const WebGestureEvent&) = 0; 60 virtual bool handleTouchEvent(LocalFrame& mainFrame, const WebTouchEvent&); ~PageWidgetEventHandler()61 virtual ~PageWidgetEventHandler() { } 62 }; 63 64 65 // Common implementation of WebViewImpl and WebPagePopupImpl. 66 class PageWidgetDelegate { 67 public: 68 enum CanvasBackground { 69 Opaque, 70 Translucent, 71 }; 72 // rootFrame arguments indicate a root localFrame from which to start performing the 73 // specified operation. If rootFrame is 0, these methods will attempt to use the 74 // Page's mainFrame(), if it is a LocalFrame. 75 static void animate(Page*, double monotonicFrameBeginTime, LocalFrame* rootFrame = 0); 76 static void layout(Page*, LocalFrame* rootFrame = 0); 77 static void paint(Page*, PageOverlayList*, WebCanvas*, const WebRect&, CanvasBackground, LocalFrame* rootFrame = 0); 78 static bool handleInputEvent(Page*, PageWidgetEventHandler&, const WebInputEvent&, LocalFrame* rootFrame = 0); 79 80 private: PageWidgetDelegate()81 PageWidgetDelegate() { } 82 }; 83 84 } 85 #endif 86