1/*
2 * Copyright (C) 2011 Apple 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 *
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 AND ITS CONTRIBUTORS "AS IS" AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "core/accessibility/AXSpinButton.h"
28
29#include "core/accessibility/AXObjectCache.h"
30#include "core/rendering/RenderObject.h"
31
32namespace WebCore {
33
34PassRefPtr<AXSpinButton> AXSpinButton::create()
35{
36    return adoptRef(new AXSpinButton);
37}
38
39AXSpinButton::AXSpinButton()
40    : m_spinButtonElement(0)
41{
42}
43
44AXSpinButton::~AXSpinButton()
45{
46}
47
48LayoutRect AXSpinButton::elementRect() const
49{
50    ASSERT(m_spinButtonElement);
51
52    if (!m_spinButtonElement || !m_spinButtonElement->renderer())
53        return LayoutRect();
54
55    Vector<FloatQuad> quads;
56    m_spinButtonElement->renderer()->absoluteFocusRingQuads(quads);
57
58    return boundingBoxForQuads(m_spinButtonElement->renderer(), quads);
59}
60
61void AXSpinButton::addChildren()
62{
63    m_haveChildren = true;
64
65    AXSpinButtonPart* incrementor = static_cast<AXSpinButtonPart*>(axObjectCache()->getOrCreate(SpinButtonPartRole));
66    incrementor->setIsIncrementor(true);
67    incrementor->setParent(this);
68    m_children.append(incrementor);
69
70    AXSpinButtonPart* decrementor = static_cast<AXSpinButtonPart*>(axObjectCache()->getOrCreate(SpinButtonPartRole));
71    decrementor->setIsIncrementor(false);
72    decrementor->setParent(this);
73    m_children.append(decrementor);
74}
75
76void AXSpinButton::step(int amount)
77{
78    ASSERT(m_spinButtonElement);
79    if (!m_spinButtonElement)
80        return;
81
82    m_spinButtonElement->step(amount);
83}
84
85// AXSpinButtonPart
86
87AXSpinButtonPart::AXSpinButtonPart()
88    : m_isIncrementor(false)
89{
90}
91
92PassRefPtr<AXSpinButtonPart> AXSpinButtonPart::create()
93{
94    return adoptRef(new AXSpinButtonPart);
95}
96
97LayoutRect AXSpinButtonPart::elementRect() const
98{
99    // FIXME: This logic should exist in the render tree or elsewhere, but there is no
100    // relationship that exists that can be queried.
101
102    LayoutRect parentRect = parentObject()->elementRect();
103    if (m_isIncrementor) {
104        parentRect.setHeight(parentRect.height() / 2);
105    } else {
106        parentRect.setY(parentRect.y() + parentRect.height() / 2);
107        parentRect.setHeight(parentRect.height() / 2);
108    }
109
110    return parentRect;
111}
112
113bool AXSpinButtonPart::press() const
114{
115    if (!m_parent || !m_parent->isSpinButton())
116        return false;
117
118    AXSpinButton* spinButton = toAXSpinButton(parentObject());
119    if (m_isIncrementor)
120        spinButton->step(1);
121    else
122        spinButton->step(-1);
123
124    return true;
125}
126
127} // namespace WebCore
128