1 /*
2 * Copyright (C) 2008 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 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 * its contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include "config.h"
30 #include "core/accessibility/AXListBoxOption.h"
31
32 #include "core/accessibility/AXObjectCache.h"
33 #include "core/html/HTMLOptionElement.h"
34 #include "core/html/HTMLSelectElement.h"
35 #include "core/rendering/RenderListBox.h"
36
37
38 namespace blink {
39
40 using namespace HTMLNames;
41
AXListBoxOption(RenderObject * renderer)42 AXListBoxOption::AXListBoxOption(RenderObject* renderer)
43 : AXRenderObject(renderer)
44 {
45 }
46
~AXListBoxOption()47 AXListBoxOption::~AXListBoxOption()
48 {
49 }
50
create(RenderObject * renderer)51 PassRefPtr<AXListBoxOption> AXListBoxOption::create(RenderObject* renderer)
52 {
53 return adoptRef(new AXListBoxOption(renderer));
54 }
55
isEnabled() const56 bool AXListBoxOption::isEnabled() const
57 {
58 if (!node())
59 return false;
60
61 if (equalIgnoringCase(getAttribute(aria_disabledAttr), "true"))
62 return false;
63
64 if (toElement(node())->hasAttribute(disabledAttr))
65 return false;
66
67 return true;
68 }
69
isSelected() const70 bool AXListBoxOption::isSelected() const
71 {
72 return isHTMLOptionElement(node()) && toHTMLOptionElement(node())->selected();
73 }
74
isSelectedOptionActive() const75 bool AXListBoxOption::isSelectedOptionActive() const
76 {
77 HTMLSelectElement* listBoxParentNode = listBoxOptionParentNode();
78 if (!listBoxParentNode)
79 return false;
80
81 return listBoxParentNode->activeSelectionEndListIndex() == listBoxOptionIndex();
82 }
83
computeAccessibilityIsIgnored() const84 bool AXListBoxOption::computeAccessibilityIsIgnored() const
85 {
86 if (!node())
87 return true;
88
89 if (accessibilityIsIgnoredByDefault())
90 return true;
91
92 return false;
93 }
94
canSetSelectedAttribute() const95 bool AXListBoxOption::canSetSelectedAttribute() const
96 {
97 if (!isHTMLOptionElement(node()))
98 return false;
99
100 if (toHTMLOptionElement(node())->isDisabledFormControl())
101 return false;
102
103 HTMLSelectElement* selectElement = listBoxOptionParentNode();
104 if (selectElement && selectElement->isDisabledFormControl())
105 return false;
106
107 return true;
108 }
109
stringValue() const110 String AXListBoxOption::stringValue() const
111 {
112 if (!node())
113 return String();
114
115 const AtomicString& ariaLabel = getAttribute(aria_labelAttr);
116 if (!ariaLabel.isNull())
117 return ariaLabel;
118
119 if (isHTMLOptionElement(node()))
120 return toHTMLOptionElement(node())->text();
121
122 return String();
123 }
124
setSelected(bool selected)125 void AXListBoxOption::setSelected(bool selected)
126 {
127 HTMLSelectElement* selectElement = listBoxOptionParentNode();
128 if (!selectElement)
129 return;
130
131 if (!canSetSelectedAttribute())
132 return;
133
134 bool isOptionSelected = isSelected();
135 if ((isOptionSelected && selected) || (!isOptionSelected && !selected))
136 return;
137
138 // Convert from the entire list index to the option index.
139 int optionIndex = selectElement->listToOptionIndex(listBoxOptionIndex());
140 selectElement->accessKeySetSelectedIndex(optionIndex);
141 }
142
listBoxOptionParentNode() const143 HTMLSelectElement* AXListBoxOption::listBoxOptionParentNode() const
144 {
145 if (!node())
146 return 0;
147
148 if (isHTMLOptionElement(node()))
149 return toHTMLOptionElement(node())->ownerSelectElement();
150
151 return 0;
152 }
153
listBoxOptionIndex() const154 int AXListBoxOption::listBoxOptionIndex() const
155 {
156 HTMLSelectElement* selectElement = listBoxOptionParentNode();
157 if (!selectElement)
158 return -1;
159
160 const WillBeHeapVector<RawPtrWillBeMember<HTMLElement> >& listItems = selectElement->listItems();
161 unsigned length = listItems.size();
162 for (unsigned i = 0; i < length; i++) {
163 if (listItems[i] == node())
164 return i;
165 }
166
167 return -1;
168 }
169
170 } // namespace blink
171