135 lines
4.3 KiB
C++
135 lines
4.3 KiB
C++
/*
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* Copyright (C) 2016 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 "AccessibilityLabel.h"
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#include "AXObjectCache.h"
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#include "HTMLNames.h"
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namespace WebCore {
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using namespace HTMLNames;
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AccessibilityLabel::AccessibilityLabel(RenderObject* renderer)
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: AccessibilityRenderObject(renderer)
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{
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}
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AccessibilityLabel::~AccessibilityLabel() = default;
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Ref<AccessibilityLabel> AccessibilityLabel::create(RenderObject* renderer)
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{
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return adoptRef(*new AccessibilityLabel(renderer));
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}
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bool AccessibilityLabel::computeAccessibilityIsIgnored() const
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{
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return accessibilityIsIgnoredByDefault();
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}
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String AccessibilityLabel::stringValue() const
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{
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if (containsOnlyStaticText())
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return textUnderElement();
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return AccessibilityNodeObject::stringValue();
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}
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static bool childrenContainOnlyStaticText(const AccessibilityObject::AccessibilityChildrenVector& children)
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{
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if (!children.size())
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return false;
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for (const auto& child : children) {
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if (child->roleValue() == AccessibilityRole::StaticText)
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continue;
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if (child->roleValue() == AccessibilityRole::Group) {
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if (!childrenContainOnlyStaticText(child->children()))
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return false;
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} else
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return false;
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}
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return true;
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}
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bool AccessibilityLabel::containsOnlyStaticText() const
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{
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if (m_containsOnlyStaticTextDirty)
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return childrenContainOnlyStaticText(m_children);
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return m_containsOnlyStaticText;
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}
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static bool childrenContainUnrelatedControls(const AccessibilityObject::AccessibilityChildrenVector& children, AccessibilityObject* controlForLabel)
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{
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if (!children.size())
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return false;
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for (const auto& child : children) {
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if (child->isControl()) {
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if (child == controlForLabel)
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continue;
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return true;
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}
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if (childrenContainUnrelatedControls(child->children(), controlForLabel))
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return true;
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}
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return false;
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}
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bool AccessibilityLabel::containsUnrelatedControls() const
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{
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if (containsOnlyStaticText())
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return false;
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return childrenContainUnrelatedControls(m_children, correspondingControlForLabelElement());
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}
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void AccessibilityLabel::updateChildrenIfNecessary()
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{
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AccessibilityRenderObject::updateChildrenIfNecessary();
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if (m_containsOnlyStaticTextDirty)
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m_containsOnlyStaticText = childrenContainOnlyStaticText(m_children);
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m_containsOnlyStaticTextDirty = false;
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}
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void AccessibilityLabel::clearChildren()
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{
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AccessibilityRenderObject::clearChildren();
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m_containsOnlyStaticText = false;
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m_containsOnlyStaticTextDirty = false;
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}
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void AccessibilityLabel::insertChild(AXCoreObject* object, unsigned index)
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{
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AccessibilityRenderObject::insertChild(object, index);
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m_containsOnlyStaticTextDirty = true;
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}
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} // namespace WebCore
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