172 lines
5.6 KiB
C++
172 lines
5.6 KiB
C++
/*
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* Copyright (C) 2008 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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*
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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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* 3. Neither the name of Apple Inc. ("Apple") nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY 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 OF
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* 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 "AccessibilityListBox.h"
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#include "AXObjectCache.h"
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#include "AccessibilityListBoxOption.h"
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#include "HTMLNames.h"
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#include "HTMLSelectElement.h"
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#include "HitTestResult.h"
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#include "RenderListBox.h"
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#include "RenderObject.h"
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namespace WebCore {
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using namespace HTMLNames;
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AccessibilityListBox::AccessibilityListBox(RenderObject* renderer)
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: AccessibilityRenderObject(renderer)
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{
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}
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AccessibilityListBox::~AccessibilityListBox() = default;
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Ref<AccessibilityListBox> AccessibilityListBox::create(RenderObject* renderer)
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{
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return adoptRef(*new AccessibilityListBox(renderer));
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}
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bool AccessibilityListBox::canSetSelectedChildren() const
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{
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Node* selectNode = m_renderer->node();
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if (!selectNode)
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return false;
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return !downcast<HTMLSelectElement>(*selectNode).isDisabledFormControl();
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}
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void AccessibilityListBox::addChildren()
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{
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if (!m_renderer)
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return;
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Node* selectNode = m_renderer->node();
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if (!selectNode)
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return;
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m_haveChildren = true;
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for (const auto& listItem : downcast<HTMLSelectElement>(*selectNode).listItems()) {
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AccessibilityObject* listOption = listBoxOptionAccessibilityObject(listItem);
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if (listOption && !listOption->accessibilityIsIgnored())
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m_children.append(listOption);
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}
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}
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void AccessibilityListBox::setSelectedChildren(const AccessibilityChildrenVector& children)
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{
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if (!canSetSelectedChildren())
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return;
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Node* selectNode = m_renderer->node();
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if (!selectNode)
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return;
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// disable any selected options
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for (const auto& child : m_children) {
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auto& listBoxOption = downcast<AccessibilityListBoxOption>(*child);
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if (listBoxOption.isSelected())
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listBoxOption.setSelected(false);
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}
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for (const auto& obj : children) {
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if (obj->roleValue() != AccessibilityRole::ListBoxOption)
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continue;
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downcast<AccessibilityListBoxOption>(*obj).setSelected(true);
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}
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}
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void AccessibilityListBox::selectedChildren(AccessibilityChildrenVector& result)
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{
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ASSERT(result.isEmpty());
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if (!hasChildren())
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addChildren();
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for (const auto& child : m_children) {
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if (downcast<AccessibilityListBoxOption>(*child).isSelected())
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result.append(child.get());
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}
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}
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void AccessibilityListBox::visibleChildren(AccessibilityChildrenVector& result)
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{
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ASSERT(result.isEmpty());
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if (!hasChildren())
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addChildren();
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unsigned length = m_children.size();
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for (unsigned i = 0; i < length; i++) {
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if (downcast<RenderListBox>(*m_renderer).listIndexIsVisible(i))
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result.append(m_children[i]);
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}
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}
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AccessibilityObject* AccessibilityListBox::listBoxOptionAccessibilityObject(HTMLElement* element) const
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{
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// FIXME: Why does AccessibilityMenuListPopup::menuListOptionAccessibilityObject check inRenderedDocument, but this does not?
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return m_renderer->document().axObjectCache()->getOrCreate(element);
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}
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AXCoreObject* AccessibilityListBox::elementAccessibilityHitTest(const IntPoint& point) const
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{
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// the internal HTMLSelectElement methods for returning a listbox option at a point
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// ignore optgroup elements.
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if (!m_renderer)
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return nullptr;
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Node* node = m_renderer->node();
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if (!node)
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return nullptr;
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LayoutRect parentRect = boundingBoxRect();
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AXCoreObject* listBoxOption = nullptr;
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unsigned length = m_children.size();
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for (unsigned i = 0; i < length; ++i) {
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LayoutRect rect = downcast<RenderListBox>(*m_renderer).itemBoundingBoxRect(parentRect.location(), i);
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// The cast to HTMLElement below is safe because the only other possible listItem type
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// would be a WMLElement, but WML builds don't use accessibility features at all.
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if (rect.contains(point)) {
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listBoxOption = m_children[i].get();
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break;
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}
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}
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if (listBoxOption && !listBoxOption->accessibilityIsIgnored())
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return listBoxOption;
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return axObjectCache()->getOrCreate(renderer());
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}
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} // namespace WebCore
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