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