blob: 07aedc971468410b901a7822dab07929eea304e0 [file] [log] [blame]
/*
* Copyright (C) 2008 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.
* 3. Neither the name of Apple Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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 "AccessibilityListBox.h"
#include "AXObjectCache.h"
#include "AccessibilityListBoxOption.h"
#include "HTMLNames.h"
#include "HTMLSelectElement.h"
#include "HitTestResult.h"
#include "RenderListBox.h"
#include "RenderObject.h"
namespace WebCore {
using namespace HTMLNames;
AccessibilityListBox::AccessibilityListBox(RenderObject* renderer)
: AccessibilityRenderObject(renderer)
{
}
AccessibilityListBox::~AccessibilityListBox() = default;
Ref<AccessibilityListBox> AccessibilityListBox::create(RenderObject* renderer)
{
return adoptRef(*new AccessibilityListBox(renderer));
}
bool AccessibilityListBox::canSetSelectedChildrenAttribute() const
{
Node* selectNode = m_renderer->node();
if (!selectNode)
return false;
return !downcast<HTMLSelectElement>(*selectNode).isDisabledFormControl();
}
void AccessibilityListBox::addChildren()
{
Node* selectNode = m_renderer->node();
if (!selectNode)
return;
m_haveChildren = true;
for (const auto& listItem : downcast<HTMLSelectElement>(*selectNode).listItems()) {
// The cast to HTMLElement below is safe because the only other possible listItem type
// would be a WMLElement, but WML builds don't use accessibility features at all.
AccessibilityObject* listOption = listBoxOptionAccessibilityObject(listItem);
if (listOption && !listOption->accessibilityIsIgnored())
m_children.append(listOption);
}
}
void AccessibilityListBox::setSelectedChildren(const AccessibilityChildrenVector& children)
{
if (!canSetSelectedChildrenAttribute())
return;
Node* selectNode = m_renderer->node();
if (!selectNode)
return;
// disable any selected options
for (const auto& child : m_children) {
auto& listBoxOption = downcast<AccessibilityListBoxOption>(*child);
if (listBoxOption.isSelected())
listBoxOption.setSelected(false);
}
for (const auto& obj : children) {
if (obj->roleValue() != AccessibilityRole::ListBoxOption)
continue;
downcast<AccessibilityListBoxOption>(*obj).setSelected(true);
}
}
void AccessibilityListBox::selectedChildren(AccessibilityChildrenVector& result)
{
ASSERT(result.isEmpty());
if (!hasChildren())
addChildren();
for (const auto& child : m_children) {
if (downcast<AccessibilityListBoxOption>(*child).isSelected())
result.append(child.get());
}
}
void AccessibilityListBox::visibleChildren(AccessibilityChildrenVector& result)
{
ASSERT(result.isEmpty());
if (!hasChildren())
addChildren();
unsigned length = m_children.size();
for (unsigned i = 0; i < length; i++) {
if (downcast<RenderListBox>(*m_renderer).listIndexIsVisible(i))
result.append(m_children[i]);
}
}
AccessibilityObject* AccessibilityListBox::listBoxOptionAccessibilityObject(HTMLElement* element) const
{
// skip hr elements
if (!element || element->hasTagName(hrTag))
return nullptr;
AccessibilityObject& listBoxObject = *m_renderer->document().axObjectCache()->getOrCreate(AccessibilityRole::ListBoxOption);
downcast<AccessibilityListBoxOption>(listBoxObject).setHTMLElement(element);
return &listBoxObject;
}
AccessibilityObject* AccessibilityListBox::elementAccessibilityHitTest(const IntPoint& point) const
{
// the internal HTMLSelectElement methods for returning a listbox option at a point
// ignore optgroup elements.
if (!m_renderer)
return nullptr;
Node* node = m_renderer->node();
if (!node)
return nullptr;
LayoutRect parentRect = boundingBoxRect();
AccessibilityObject* listBoxOption = nullptr;
unsigned length = m_children.size();
for (unsigned i = 0; i < length; ++i) {
LayoutRect rect = downcast<RenderListBox>(*m_renderer).itemBoundingBoxRect(parentRect.location(), i);
// The cast to HTMLElement below is safe because the only other possible listItem type
// would be a WMLElement, but WML builds don't use accessibility features at all.
if (rect.contains(point)) {
listBoxOption = m_children[i].get();
break;
}
}
if (listBoxOption && !listBoxOption->accessibilityIsIgnored())
return listBoxOption;
return axObjectCache()->getOrCreate(renderer());
}
} // namespace WebCore