106 lines
3.4 KiB
C++
106 lines
3.4 KiB
C++
/*
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* Copyright (C) 2010, 2015 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 "AccessibilityScrollbar.h"
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#include "AXObjectCache.h"
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#include "FrameView.h"
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#include "ScrollView.h"
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#include "Scrollbar.h"
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namespace WebCore {
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AccessibilityScrollbar::AccessibilityScrollbar(Scrollbar* scrollbar)
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: m_scrollbar(scrollbar)
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{
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ASSERT(scrollbar);
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}
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Ref<AccessibilityScrollbar> AccessibilityScrollbar::create(Scrollbar* scrollbar)
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{
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return adoptRef(*new AccessibilityScrollbar(scrollbar));
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}
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LayoutRect AccessibilityScrollbar::elementRect() const
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{
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if (!m_scrollbar)
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return LayoutRect();
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return m_scrollbar->frameRect();
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}
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Document* AccessibilityScrollbar::document() const
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{
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AccessibilityObject* parent = parentObject();
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if (!parent)
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return nullptr;
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return parent->document();
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}
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AccessibilityOrientation AccessibilityScrollbar::orientation() const
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{
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// ARIA 1.1 Elements with the role scrollbar have an implicit aria-orientation value of vertical.
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if (!m_scrollbar)
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return AccessibilityOrientation::Vertical;
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if (m_scrollbar->orientation() == HorizontalScrollbar)
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return AccessibilityOrientation::Horizontal;
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if (m_scrollbar->orientation() == VerticalScrollbar)
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return AccessibilityOrientation::Vertical;
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return AccessibilityOrientation::Vertical;
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}
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bool AccessibilityScrollbar::isEnabled() const
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{
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if (!m_scrollbar)
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return false;
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return m_scrollbar->enabled();
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}
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float AccessibilityScrollbar::valueForRange() const
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{
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if (!m_scrollbar)
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return 0;
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return m_scrollbar->currentPos() / m_scrollbar->maximum();
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}
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bool AccessibilityScrollbar::setValue(float value)
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{
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if (!m_scrollbar)
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return false;
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float newValue = value * m_scrollbar->maximum();
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m_scrollbar->scrollableArea().scrollToOffsetWithoutAnimation(m_scrollbar->orientation(), newValue);
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return true;
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}
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} // namespace WebCore
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