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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.
* 3. Neither the name of Apple Computer, 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 "AccessibilityScrollbar.h"
#include "AXObjectCache.h"
#include "FrameView.h"
#include "ScrollView.h"
#include "Scrollbar.h"
namespace WebCore {
AccessibilityScrollbar::AccessibilityScrollbar(Scrollbar* scrollbar)
: m_scrollbar(scrollbar)
, m_parent(0)
{
ASSERT(scrollbar);
}
PassRefPtr<AccessibilityScrollbar> AccessibilityScrollbar::create(Scrollbar* scrollbar)
{
return adoptRef(new AccessibilityScrollbar(scrollbar));
}
IntRect AccessibilityScrollbar::elementRect() const
{
if (!m_scrollbar)
return IntRect();
return m_scrollbar->frameRect();
}
Document* AccessibilityScrollbar::document() const
{
AccessibilityObject* parent = parentObject();
if (!parent)
return 0;
return parent->document();
}
AccessibilityOrientation AccessibilityScrollbar::orientation() const
{
if (!m_scrollbar)
return AccessibilityOrientationHorizontal;
if (m_scrollbar->orientation() == HorizontalScrollbar)
return AccessibilityOrientationHorizontal;
if (m_scrollbar->orientation() == VerticalScrollbar)
return AccessibilityOrientationVertical;
return AccessibilityOrientationHorizontal;
}
bool AccessibilityScrollbar::isEnabled() const
{
if (!m_scrollbar)
return false;
return m_scrollbar->enabled();
}
float AccessibilityScrollbar::valueForRange() const
{
if (!m_scrollbar)
return 0;
return m_scrollbar->currentPos() / m_scrollbar->maximum();
}
void AccessibilityScrollbar::setValue(float value)
{
if (!m_scrollbar)
return;
if (!m_scrollbar->scrollableArea())
return;
float newValue = value * m_scrollbar->maximum();
m_scrollbar->scrollableArea()->scrollToOffsetWithoutAnimation(m_scrollbar->orientation(), newValue);
}
} // namespace WebCore
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