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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 "modules/accessibility/AXScrollbar.h"
#include "modules/accessibility/AXObjectCacheImpl.h"
#include "platform/scroll/ScrollableArea.h"
#include "platform/scroll/Scrollbar.h"
namespace blink {
AXScrollbar::AXScrollbar(Scrollbar* scrollbar, AXObjectCacheImpl& axObjectCache)
: AXMockObject(axObjectCache)
, m_scrollbar(scrollbar)
{
ASSERT(scrollbar);
}
AXScrollbar::~AXScrollbar()
{
ASSERT(!m_scrollbar);
}
void AXScrollbar::detachFromParent()
{
m_scrollbar = nullptr;
AXMockObject::detachFromParent();
}
AXScrollbar* AXScrollbar::create(Scrollbar* scrollbar, AXObjectCacheImpl& axObjectCache)
{
return new AXScrollbar(scrollbar, axObjectCache);
}
LayoutRect AXScrollbar::elementRect() const
{
if (!m_scrollbar)
return LayoutRect();
return LayoutRect(m_scrollbar->frameRect());
}
Document* AXScrollbar::document() const
{
AXObject* parent = parentObject();
if (!parent)
return 0;
return parent->document();
}
AccessibilityOrientation AXScrollbar::orientation() const
{
if (!m_scrollbar)
return AccessibilityOrientationHorizontal;
if (m_scrollbar->orientation() == HorizontalScrollbar)
return AccessibilityOrientationHorizontal;
if (m_scrollbar->orientation() == VerticalScrollbar)
return AccessibilityOrientationVertical;
return AccessibilityOrientationVertical;
}
bool AXScrollbar::isEnabled() const
{
if (!m_scrollbar)
return false;
return m_scrollbar->enabled();
}
float AXScrollbar::valueForRange() const
{
if (!m_scrollbar)
return 0;
return m_scrollbar->currentPos() / m_scrollbar->maximum();
}
void AXScrollbar::setValue(float value)
{
if (!m_scrollbar)
return;
if (!m_scrollbar->scrollableArea())
return;
float newValue = value * m_scrollbar->maximum();
// TODO(bokan): This should potentially be a UserScroll.
m_scrollbar->scrollableArea()->setScrollPositionSingleAxis(m_scrollbar->orientation(), newValue, ProgrammaticScroll);
}
DEFINE_TRACE(AXScrollbar)
{
visitor->trace(m_scrollbar);
AXMockObject::trace(visitor);
}
} // namespace blink