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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/AXMenuListPopup.h" | |
28 | |
29 #include "core/accessibility/AXMenuListOption.h" | |
30 #include "core/accessibility/AXObjectCacheImpl.h" | |
31 #include "core/html/HTMLSelectElement.h" | |
32 | |
33 namespace blink { | |
34 | |
35 using namespace HTMLNames; | |
36 | |
37 AXMenuListPopup::AXMenuListPopup() | |
38 { | |
39 } | |
40 | |
41 bool AXMenuListPopup::isVisible() const | |
42 { | |
43 return false; | |
44 } | |
45 | |
46 bool AXMenuListPopup::isOffScreen() const | |
47 { | |
48 if (!m_parent) | |
49 return true; | |
50 | |
51 return m_parent->isCollapsed(); | |
52 } | |
53 | |
54 bool AXMenuListPopup::isEnabled() const | |
55 { | |
56 if (!m_parent) | |
57 return false; | |
58 | |
59 return m_parent->isEnabled(); | |
60 } | |
61 | |
62 bool AXMenuListPopup::computeAccessibilityIsIgnored() const | |
63 { | |
64 return accessibilityIsIgnoredByDefault(); | |
65 } | |
66 | |
67 AXMenuListOption* AXMenuListPopup::menuListOptionAXObject(HTMLElement* element)
const | |
68 { | |
69 ASSERT(element); | |
70 if (!isHTMLOptionElement(*element)) | |
71 return 0; | |
72 | |
73 AXObject* object = toAXObjectCacheImpl(document()->axObjectCache())->getOrCr
eate(MenuListOptionRole); | |
74 ASSERT_WITH_SECURITY_IMPLICATION(object->isMenuListOption()); | |
75 | |
76 AXMenuListOption* option = toAXMenuListOption(object); | |
77 option->setElement(element); | |
78 | |
79 return option; | |
80 } | |
81 | |
82 bool AXMenuListPopup::press() const | |
83 { | |
84 if (!m_parent) | |
85 return false; | |
86 | |
87 m_parent->press(); | |
88 return true; | |
89 } | |
90 | |
91 void AXMenuListPopup::addChildren() | |
92 { | |
93 if (!m_parent) | |
94 return; | |
95 | |
96 Node* selectNode = m_parent->node(); | |
97 if (!selectNode) | |
98 return; | |
99 | |
100 m_haveChildren = true; | |
101 | |
102 const WillBeHeapVector<RawPtrWillBeMember<HTMLElement> >& listItems = toHTML
SelectElement(selectNode)->listItems(); | |
103 unsigned length = listItems.size(); | |
104 for (unsigned i = 0; i < length; i++) { | |
105 AXMenuListOption* option = menuListOptionAXObject(listItems[i]); | |
106 if (option) { | |
107 option->setParent(this); | |
108 m_children.append(option); | |
109 } | |
110 } | |
111 } | |
112 | |
113 void AXMenuListPopup::childrenChanged() | |
114 { | |
115 AXObjectCacheImpl* cache = axObjectCache(); | |
116 if (!cache) | |
117 return; | |
118 for (size_t i = m_children.size(); i > 0 ; --i) { | |
119 AXObject* child = m_children[i - 1].get(); | |
120 // FIXME: How could children end up in here that have no actionElement()
, the check | |
121 // in menuListOptionAXObject would seem to prevent that. | |
122 if (child->actionElement()) { | |
123 child->detachFromParent(); | |
124 cache->remove(child->axObjectID()); | |
125 } | |
126 } | |
127 | |
128 m_children.clear(); | |
129 m_haveChildren = false; | |
130 } | |
131 | |
132 void AXMenuListPopup::didUpdateActiveOption(int optionIndex) | |
133 { | |
134 // We defer creation of the children until updating the active option so tha
t we don't | |
135 // create AXObjects for <option> elements while they're in the middle of rem
oval. | |
136 if (!m_haveChildren) | |
137 addChildren(); | |
138 | |
139 ASSERT_ARG(optionIndex, optionIndex >= 0); | |
140 ASSERT_ARG(optionIndex, optionIndex < static_cast<int>(m_children.size())); | |
141 | |
142 AXObjectCacheImpl* cache = axObjectCache(); | |
143 RefPtr<AXObject> child = m_children[optionIndex].get(); | |
144 | |
145 cache->postNotification(child.get(), document(), AXObjectCacheImpl::AXFocuse
dUIElementChanged, true); | |
146 cache->postNotification(child.get(), document(), AXObjectCacheImpl::AXMenuLi
stItemSelected, true); | |
147 } | |
148 | |
149 } // namespace blink | |
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