1/*
2 * Copyright 2009, The Android Open Source Project
3 * Copyright (C) 2006 Zack Rusin <zack@kde.org>
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26#define LOG_TAG "WebCore"
27
28#include "config.h"
29#include "EventHandler.h"
30
31#include "FocusController.h"
32#include "Frame.h"
33#include "KeyboardEvent.h"
34#include "MouseEventWithHitTestResults.h"
35#include "Page.h"
36#include "PlatformKeyboardEvent.h"
37#include "PlatformWheelEvent.h"
38#include "RenderWidget.h"
39
40namespace WebCore {
41
42bool EventHandler::tabsToAllFormControls(KeyboardEvent*) const
43{
44    return true;
45}
46
47void EventHandler::focusDocumentView()
48{
49    if (Page* page = m_frame->page())
50        page->focusController()->setFocusedFrame(m_frame);
51}
52
53bool EventHandler::passWidgetMouseDownEventToWidget(const MouseEventWithHitTestResults& event)
54{
55    // Figure out which view to send the event to.
56    RenderObject* target = targetNode(event) ? targetNode(event)->renderer() : 0;
57    if (!target || !target->isWidget())
58        return false;
59    return passMouseDownEventToWidget(toRenderWidget(target)->widget());
60}
61
62bool EventHandler::passWidgetMouseDownEventToWidget(RenderWidget* renderWidget)
63{
64    return passMouseDownEventToWidget(renderWidget->widget());
65}
66
67// This function is used to route the mouse down event to the native widgets, it seems like a
68// work around for the Mac platform which does not support double clicks, but browsers do.
69bool EventHandler::passMouseDownEventToWidget(Widget*)
70{
71    // return false so the normal propogation handles the event
72    return false;
73}
74
75bool EventHandler::eventActivatedView(const PlatformMouseEvent&) const
76{
77    notImplemented();
78    return false;
79}
80
81// This is called to route wheel events to child widgets when they are RenderWidget
82// as the parent usually gets wheel event. Don't have a mouse with a wheel to confirm
83// the operation of this function.
84bool EventHandler::passWheelEventToWidget(PlatformWheelEvent&, Widget*)
85{
86    notImplemented();
87    return false;
88}
89
90bool EventHandler::passMousePressEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe)
91{
92    subframe->eventHandler()->handleMousePressEvent(mev.event());
93    return true;
94}
95
96bool EventHandler::passMouseMoveEventToSubframe(MouseEventWithHitTestResults& mev,
97    Frame* subframe, HitTestResult* hoveredNode)
98{
99    subframe->eventHandler()->handleMouseMoveEvent(mev.event(), hoveredNode);
100    return true;
101}
102
103bool EventHandler::passMouseReleaseEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe)
104{
105    subframe->eventHandler()->handleMouseReleaseEvent(mev.event());
106    return true;
107}
108
109PassRefPtr<Clipboard> EventHandler::createDraggingClipboard() const
110{
111    return PassRefPtr<Clipboard>(0);
112}
113
114unsigned EventHandler::accessKeyModifiers()
115{
116    return PlatformKeyboardEvent::AltKey;
117}
118
119const double EventHandler::TextDragDelay = 0.0;
120
121}  // namespace WebCore
122