1/*
2 * Copyright (C) 2010 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 * 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. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "core/accessibility/AccessibilityMenuListOption.h"
28
29#include "core/html/HTMLOptionElement.h"
30
31namespace WebCore {
32
33using namespace HTMLNames;
34
35AccessibilityMenuListOption::AccessibilityMenuListOption()
36{
37}
38
39void AccessibilityMenuListOption::setElement(HTMLElement* element)
40{
41    ASSERT_ARG(element, element->hasTagName(optionTag));
42    m_element = element;
43}
44
45Element* AccessibilityMenuListOption::actionElement() const
46{
47    return m_element.get();
48}
49
50bool AccessibilityMenuListOption::isEnabled() const
51{
52    // isDisabledFormControl() returns true if the parent <select> element is disabled,
53    // which we don't want.
54    return !toHTMLOptionElement(m_element.get())->ownElementDisabled();
55}
56
57bool AccessibilityMenuListOption::isVisible() const
58{
59    if (!m_parent)
60        return false;
61
62    // In a single-option select with the popup collapsed, only the selected
63    // item is considered visible.
64    return !m_parent->isOffScreen() || isSelected();
65}
66
67bool AccessibilityMenuListOption::isOffScreen() const
68{
69    // Invisible list options are considered to be offscreen.
70    return !isVisible();
71}
72
73bool AccessibilityMenuListOption::isSelected() const
74{
75    return toHTMLOptionElement(m_element.get())->selected();
76}
77
78void AccessibilityMenuListOption::setSelected(bool b)
79{
80    if (!canSetSelectedAttribute())
81        return;
82
83    toHTMLOptionElement(m_element.get())->setSelected(b);
84}
85
86bool AccessibilityMenuListOption::canSetSelectedAttribute() const
87{
88    return isEnabled();
89}
90
91bool AccessibilityMenuListOption::computeAccessibilityIsIgnored() const
92{
93    return accessibilityIsIgnoredByDefault();
94}
95
96LayoutRect AccessibilityMenuListOption::elementRect() const
97{
98    AccessibilityObject* parent = parentObject();
99    ASSERT(parent->isMenuListPopup());
100
101    AccessibilityObject* grandparent = parent->parentObject();
102    ASSERT(grandparent->isMenuList());
103
104    return grandparent->elementRect();
105}
106
107String AccessibilityMenuListOption::stringValue() const
108{
109    return toHTMLOptionElement(m_element.get())->text();
110}
111
112} // namespace WebCore
113