third_party/WebKit/Source/web/PageWidgetDelegate.h

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