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
38namespace blink {
39
40class LocalFrame;
41class Page;
42class PageOverlayList;
43class WebGestureEvent;
44class WebInputEvent;
45class WebKeyboardEvent;
46class WebMouseEvent;
47class WebMouseWheelEvent;
48class WebTouchEvent;
49
50class PageWidgetEventHandler {
51public:
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&);
61    virtual ~PageWidgetEventHandler() { }
62};
63
64
65// Common implementation of WebViewImpl and WebPagePopupImpl.
66class PageWidgetDelegate {
67public:
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
80private:
81    PageWidgetDelegate() { }
82};
83
84}
85#endif
86