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 blink {
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    return m_spinButtonElement->renderer()->absoluteFocusRingBoundingBoxRect();
56}
57
58void AXSpinButton::addChildren()
59{
60    m_haveChildren = true;
61
62    AXSpinButtonPart* incrementor = toAXSpinButtonPart(axObjectCache()->getOrCreate(SpinButtonPartRole));
63    incrementor->setIsIncrementor(true);
64    incrementor->setParent(this);
65    m_children.append(incrementor);
66
67    AXSpinButtonPart* decrementor = toAXSpinButtonPart(axObjectCache()->getOrCreate(SpinButtonPartRole));
68    decrementor->setIsIncrementor(false);
69    decrementor->setParent(this);
70    m_children.append(decrementor);
71}
72
73void AXSpinButton::step(int amount)
74{
75    ASSERT(m_spinButtonElement);
76    if (!m_spinButtonElement)
77        return;
78
79    m_spinButtonElement->step(amount);
80}
81
82// AXSpinButtonPart
83
84AXSpinButtonPart::AXSpinButtonPart()
85    : m_isIncrementor(false)
86{
87}
88
89PassRefPtr<AXSpinButtonPart> AXSpinButtonPart::create()
90{
91    return adoptRef(new AXSpinButtonPart);
92}
93
94LayoutRect AXSpinButtonPart::elementRect() const
95{
96    // FIXME: This logic should exist in the render tree or elsewhere, but there is no
97    // relationship that exists that can be queried.
98
99    LayoutRect parentRect = parentObject()->elementRect();
100    if (m_isIncrementor) {
101        parentRect.setHeight(parentRect.height() / 2);
102    } else {
103        parentRect.setY(parentRect.y() + parentRect.height() / 2);
104        parentRect.setHeight(parentRect.height() / 2);
105    }
106
107    return parentRect;
108}
109
110bool AXSpinButtonPart::press() const
111{
112    if (!m_parent || !m_parent->isSpinButton())
113        return false;
114
115    AXSpinButton* spinButton = toAXSpinButton(parentObject());
116    if (m_isIncrementor)
117        spinButton->step(1);
118    else
119        spinButton->step(-1);
120
121    return true;
122}
123
124} // namespace blink
125