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/HTMLOptGroupElement.h"
34 #include "core/html/HTMLOptionElement.h"
35 #include "core/html/HTMLSelectElement.h"
36 #include "core/rendering/RenderListBox.h"
37
38
39 namespace WebCore {
40
41 using namespace HTMLNames;
42
AXListBoxOption()43 AXListBoxOption::AXListBoxOption()
44 : m_optionElement(0)
45 {
46 }
47
~AXListBoxOption()48 AXListBoxOption::~AXListBoxOption()
49 {
50 }
51
create()52 PassRefPtr<AXListBoxOption> AXListBoxOption::create()
53 {
54 return adoptRef(new AXListBoxOption());
55 }
56
isEnabled() const57 bool AXListBoxOption::isEnabled() const
58 {
59 if (!m_optionElement)
60 return false;
61
62 if (isHTMLOptGroupElement(*m_optionElement))
63 return false;
64
65 if (equalIgnoringCase(getAttribute(aria_disabledAttr), "true"))
66 return false;
67
68 if (m_optionElement->hasAttribute(disabledAttr))
69 return false;
70
71 return true;
72 }
73
isSelected() const74 bool AXListBoxOption::isSelected() const
75 {
76 if (!isHTMLOptionElement(m_optionElement))
77 return false;
78
79 return toHTMLOptionElement(m_optionElement)->selected();
80 }
81
isSelectedOptionActive() const82 bool AXListBoxOption::isSelectedOptionActive() const
83 {
84 HTMLSelectElement* listBoxParentNode = listBoxOptionParentNode();
85 if (!listBoxParentNode)
86 return false;
87
88 return listBoxParentNode->activeSelectionEndListIndex() == listBoxOptionIndex();
89 }
90
elementRect() const91 LayoutRect AXListBoxOption::elementRect() const
92 {
93 LayoutRect rect;
94 if (!m_optionElement)
95 return rect;
96
97 HTMLSelectElement* listBoxParentNode = listBoxOptionParentNode();
98 if (!listBoxParentNode)
99 return rect;
100
101 RenderObject* listBoxRenderer = listBoxParentNode->renderer();
102 if (!listBoxRenderer)
103 return rect;
104
105 LayoutRect parentRect = listBoxRenderer->document().axObjectCache()->getOrCreate(listBoxRenderer)->elementRect();
106 int index = listBoxOptionIndex();
107 if (index != -1)
108 rect = toRenderListBox(listBoxRenderer)->itemBoundingBoxRect(parentRect.location(), index);
109
110 return rect;
111 }
112
computeAccessibilityIsIgnored() const113 bool AXListBoxOption::computeAccessibilityIsIgnored() const
114 {
115 if (!m_optionElement)
116 return true;
117
118 if (accessibilityIsIgnoredByDefault())
119 return true;
120
121 return parentObject()->accessibilityIsIgnored();
122 }
123
canSetSelectedAttribute() const124 bool AXListBoxOption::canSetSelectedAttribute() const
125 {
126 if (!isHTMLOptionElement(m_optionElement))
127 return false;
128
129 if (m_optionElement->isDisabledFormControl())
130 return false;
131
132 HTMLSelectElement* selectElement = listBoxOptionParentNode();
133 if (selectElement && selectElement->isDisabledFormControl())
134 return false;
135
136 return true;
137 }
138
stringValue() const139 String AXListBoxOption::stringValue() const
140 {
141 if (!m_optionElement)
142 return String();
143
144 const AtomicString& ariaLabel = getAttribute(aria_labelAttr);
145 if (!ariaLabel.isNull())
146 return ariaLabel;
147
148 if (isHTMLOptionElement(*m_optionElement))
149 return toHTMLOptionElement(m_optionElement)->text();
150
151 if (isHTMLOptGroupElement(*m_optionElement))
152 return toHTMLOptGroupElement(m_optionElement)->groupLabelText();
153
154 return String();
155 }
156
actionElement() const157 Element* AXListBoxOption::actionElement() const
158 {
159 return m_optionElement;
160 }
161
parentObject() const162 AXObject* AXListBoxOption::parentObject() const
163 {
164 HTMLSelectElement* parentNode = listBoxOptionParentNode();
165 if (!parentNode)
166 return 0;
167
168 return m_optionElement->document().axObjectCache()->getOrCreate(parentNode);
169 }
170
setSelected(bool selected)171 void AXListBoxOption::setSelected(bool selected)
172 {
173 HTMLSelectElement* selectElement = listBoxOptionParentNode();
174 if (!selectElement)
175 return;
176
177 if (!canSetSelectedAttribute())
178 return;
179
180 bool isOptionSelected = isSelected();
181 if ((isOptionSelected && selected) || (!isOptionSelected && !selected))
182 return;
183
184 // Convert from the entire list index to the option index.
185 int optionIndex = selectElement->listToOptionIndex(listBoxOptionIndex());
186 selectElement->accessKeySetSelectedIndex(optionIndex);
187 }
188
listBoxOptionParentNode() const189 HTMLSelectElement* AXListBoxOption::listBoxOptionParentNode() const
190 {
191 if (!m_optionElement)
192 return 0;
193
194 if (isHTMLOptionElement(*m_optionElement))
195 return toHTMLOptionElement(m_optionElement)->ownerSelectElement();
196
197 if (isHTMLOptGroupElement(*m_optionElement))
198 return toHTMLOptGroupElement(m_optionElement)->ownerSelectElement();
199
200 return 0;
201 }
202
listBoxOptionIndex() const203 int AXListBoxOption::listBoxOptionIndex() const
204 {
205 if (!m_optionElement)
206 return -1;
207
208 HTMLSelectElement* selectElement = listBoxOptionParentNode();
209 if (!selectElement)
210 return -1;
211
212 const WillBeHeapVector<RawPtrWillBeMember<HTMLElement> >& listItems = selectElement->listItems();
213 unsigned length = listItems.size();
214 for (unsigned i = 0; i < length; i++) {
215 if (listItems[i] == m_optionElement)
216 return i;
217 }
218
219 return -1;
220 }
221
222 } // namespace WebCore
223