1/*
2 * Copyright (C) 2013 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
6 * are met:
7 * 1.  Redistributions of source code must retain the above copyright
8 *     notice, this list of conditions and the following disclaimer.
9 * 2.  Redistributions in binary form must reproduce the above copyright
10 *     notice, this list of conditions and the following disclaimer in the
11 *     documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
19 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
20 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "core/html/shadow/ClearButtonElement.h"
28
29#include "core/events/MouseEvent.h"
30#include "core/frame/LocalFrame.h"
31#include "core/html/shadow/ShadowElementNames.h"
32#include "core/page/EventHandler.h"
33#include "core/rendering/RenderView.h"
34
35namespace blink {
36
37using namespace HTMLNames;
38
39inline ClearButtonElement::ClearButtonElement(Document& document, ClearButtonOwner& clearButtonOwner)
40    : HTMLDivElement(document)
41    , m_clearButtonOwner(&clearButtonOwner)
42    , m_capturing(false)
43{
44}
45
46PassRefPtrWillBeRawPtr<ClearButtonElement> ClearButtonElement::create(Document& document, ClearButtonOwner& clearButtonOwner)
47{
48    RefPtrWillBeRawPtr<ClearButtonElement> element = adoptRefWillBeNoop(new ClearButtonElement(document, clearButtonOwner));
49    element->setShadowPseudoId(AtomicString("-webkit-clear-button", AtomicString::ConstructFromLiteral));
50    element->setAttribute(idAttr, ShadowElementNames::clearButton());
51    return element.release();
52}
53
54void ClearButtonElement::detach(const AttachContext& context)
55{
56    if (m_capturing) {
57        if (LocalFrame* frame = document().frame())
58            frame->eventHandler().setCapturingMouseEventsNode(nullptr);
59    }
60    HTMLDivElement::detach(context);
61}
62
63void ClearButtonElement::releaseCapture()
64{
65    if (!m_capturing)
66        return;
67
68    if (LocalFrame* frame = document().frame()) {
69        frame->eventHandler().setCapturingMouseEventsNode(nullptr);
70        m_capturing = false;
71    }
72}
73
74void ClearButtonElement::defaultEventHandler(Event* event)
75{
76    if (!m_clearButtonOwner) {
77        if (!event->defaultHandled())
78            HTMLDivElement::defaultEventHandler(event);
79        return;
80    }
81
82    if (!m_clearButtonOwner->shouldClearButtonRespondToMouseEvents()) {
83        if (!event->defaultHandled())
84            HTMLDivElement::defaultEventHandler(event);
85        return;
86    }
87
88    if (event->type() == EventTypeNames::mousedown && event->isMouseEvent() && toMouseEvent(event)->button() == LeftButton) {
89        if (renderer() && renderer()->visibleToHitTesting()) {
90            if (LocalFrame* frame = document().frame()) {
91                frame->eventHandler().setCapturingMouseEventsNode(this);
92                m_capturing = true;
93            }
94        }
95        m_clearButtonOwner->focusAndSelectClearButtonOwner();
96        event->setDefaultHandled();
97    }
98    if (event->type() == EventTypeNames::mouseup && event->isMouseEvent() && toMouseEvent(event)->button() == LeftButton) {
99        if (m_capturing) {
100            if (LocalFrame* frame = document().frame()) {
101                frame->eventHandler().setCapturingMouseEventsNode(nullptr);
102                m_capturing = false;
103            }
104            if (hovered()) {
105                m_clearButtonOwner->clearValue();
106                event->setDefaultHandled();
107            }
108        }
109    }
110
111    if (!event->defaultHandled())
112        HTMLDivElement::defaultEventHandler(event);
113}
114
115bool ClearButtonElement::isClearButtonElement() const
116{
117    return true;
118}
119
120void ClearButtonElement::trace(Visitor* visitor)
121{
122    visitor->trace(m_clearButtonOwner);
123    HTMLDivElement::trace(visitor);
124}
125
126}
127