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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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