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
35 namespace WebCore {
36
37 using namespace HTMLNames;
38
ClearButtonElement(Document & document,ClearButtonOwner & clearButtonOwner)39 inline ClearButtonElement::ClearButtonElement(Document& document, ClearButtonOwner& clearButtonOwner)
40 : HTMLDivElement(document)
41 , m_clearButtonOwner(&clearButtonOwner)
42 , m_capturing(false)
43 {
44 }
45
create(Document & document,ClearButtonOwner & clearButtonOwner)46 PassRefPtrWillBeRawPtr<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
detach(const AttachContext & context)54 void 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
releaseCapture()63 void 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
defaultEventHandler(Event * event)74 void 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
isClearButtonElement() const115 bool ClearButtonElement::isClearButtonElement() const
116 {
117 return true;
118 }
119
trace(Visitor * visitor)120 void ClearButtonElement::trace(Visitor* visitor)
121 {
122 visitor->trace(m_clearButtonOwner);
123 HTMLDivElement::trace(visitor);
124 }
125
126 }
127