145 lines
4.8 KiB
C++
145 lines
4.8 KiB
C++
/*
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* Copyright (C) 2010 Apple Inc. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "AccessibilityMenuList.h"
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#include "AXObjectCache.h"
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#include "AccessibilityMenuListPopup.h"
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#include "RenderMenuList.h"
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namespace WebCore {
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AccessibilityMenuList::AccessibilityMenuList(RenderMenuList* renderer)
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: AccessibilityRenderObject(renderer)
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{
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}
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Ref<AccessibilityMenuList> AccessibilityMenuList::create(RenderMenuList* renderer)
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{
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return adoptRef(*new AccessibilityMenuList(renderer));
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}
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bool AccessibilityMenuList::press()
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{
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#if !PLATFORM(IOS_FAMILY)
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auto element = this->element();
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AXObjectCache::AXNotification notification = AXObjectCache::AXPressDidFail;
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if (element && !element->isDisabledFormControl() && is<RenderMenuList>(renderer())) {
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RenderMenuList* menuList = downcast<RenderMenuList>(renderer());
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if (menuList->popupIsVisible())
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menuList->hidePopup();
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else
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menuList->showPopup();
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notification = AXObjectCache::AXPressDidSucceed;
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}
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if (auto cache = axObjectCache())
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cache->postNotification(element, notification);
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return true;
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#endif
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return false;
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}
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void AccessibilityMenuList::addChildren()
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{
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if (!m_renderer)
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return;
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AXObjectCache* cache = axObjectCache();
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if (!cache)
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return;
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auto list = cache->create(AccessibilityRole::MenuListPopup);
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if (!list)
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return;
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downcast<AccessibilityMockObject>(*list).setParent(this);
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if (list->accessibilityIsIgnored()) {
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cache->remove(list->objectID());
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return;
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}
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m_haveChildren = true;
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m_children.append(list);
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list->addChildren();
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}
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void AccessibilityMenuList::childrenChanged()
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{
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if (m_children.isEmpty())
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return;
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ASSERT(m_children.size() == 1);
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m_children[0]->childrenChanged();
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}
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bool AccessibilityMenuList::isCollapsed() const
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{
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#if !PLATFORM(IOS_FAMILY)
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auto* renderer = this->renderer();
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return !(is<RenderMenuList>(renderer) && downcast<RenderMenuList>(*renderer).popupIsVisible());
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#else
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return true;
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#endif
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}
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bool AccessibilityMenuList::canSetFocusAttribute() const
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{
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if (!node())
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return false;
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return !downcast<Element>(*node()).isDisabledFormControl();
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}
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void AccessibilityMenuList::didUpdateActiveOption(int optionIndex)
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{
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Ref<Document> document(m_renderer->document());
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const auto& childObjects = children();
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if (!childObjects.isEmpty()) {
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ASSERT(childObjects.size() == 1);
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ASSERT(is<AccessibilityMenuListPopup>(*childObjects[0]));
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// We might be calling this method in situations where the renderers for list items
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// associated to the menu list have not been created (e.g. they might be rendered
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// in the UI process, as it's the case in the GTK+ port, which uses GtkMenuItem).
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// So, we need to make sure that the accessibility popup object has some children
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// before asking it to update its active option, or it will read invalid memory.
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// You can reproduce the issue in the GTK+ port by removing this check and running
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// accessibility/insert-selected-option-into-select-causes-crash.html (will crash).
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int popupChildrenSize = static_cast<int>(childObjects[0]->children().size());
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if (is<AccessibilityMenuListPopup>(*childObjects[0]) && optionIndex >= 0 && optionIndex < popupChildrenSize)
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downcast<AccessibilityMenuListPopup>(*childObjects[0]).didUpdateActiveOption(optionIndex);
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}
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#if ENABLE(ACCESSIBILITY)
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if (auto* cache = document->axObjectCache())
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cache->deferMenuListValueChange(element());
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#endif
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}
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} // namespace WebCore
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