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/*
* This file is part of the select element renderer in WebCore.
*
* Copyright (C) 2006, 2007, 2009 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.
*/
#ifndef RenderListBox_h
#define RenderListBox_h
#include "core/platform/ScrollableArea.h"
#include "core/rendering/RenderBlockFlow.h"
namespace WebCore {
class HTMLSelectElement;
class RenderListBox FINAL : public RenderBlockFlow, private ScrollableArea {
public:
explicit RenderListBox(Element*);
virtual ~RenderListBox();
void selectionChanged();
void setOptionsChanged(bool changed) { m_optionsChanged = changed; }
int listIndexAtOffset(const LayoutSize&);
LayoutRect itemBoundingBoxRect(const LayoutPoint&, int index);
bool scrollToRevealElementAtListIndex(int index);
bool listIndexIsVisible(int index);
int scrollToward(const IntPoint&); // Returns the new index or -1 if no scroll occurred
int size() const;
private:
HTMLSelectElement* selectElement() const;
virtual const char* renderName() const { return "RenderListBox"; }
virtual bool isListBox() const { return true; }
virtual void updateFromElement();
virtual bool canBeReplacedWithInlineRunIn() const OVERRIDE;
virtual bool hasControlClip() const { return true; }
virtual void paintObject(PaintInfo&, const LayoutPoint&);
virtual LayoutRect controlClipRect(const LayoutPoint&) const;
virtual bool isPointInOverflowControl(HitTestResult&, const LayoutPoint& locationInContainer, const LayoutPoint& accumulatedOffset);
virtual bool scrollImpl(ScrollDirection, ScrollGranularity, float) OVERRIDE;
virtual void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const OVERRIDE;
virtual void computePreferredLogicalWidths() OVERRIDE;
virtual int baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const;
virtual void computeLogicalHeight(LayoutUnit logicalHeight, LayoutUnit logicalTop, LogicalExtentComputedValues&) const OVERRIDE;
virtual void layout();
virtual bool supportsPartialLayout() const OVERRIDE { return false; }
virtual void addFocusRingRects(Vector<IntRect>&, const LayoutPoint& additionalOffset, const RenderLayerModelObject* paintContainer = 0) OVERRIDE;
virtual bool canBeProgramaticallyScrolled() const { return true; }
virtual void autoscroll(const IntPoint&);
virtual void stopAutoscroll();
virtual bool shouldPanScroll() const { return true; }
virtual void panScroll(const IntPoint&);
virtual int verticalScrollbarWidth() const;
virtual int scrollLeft() const;
virtual int scrollTop() const;
virtual int scrollWidth() const;
virtual int scrollHeight() const;
virtual void setScrollLeft(int);
virtual void setScrollTop(int);
virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) OVERRIDE;
// ScrollableArea interface.
virtual int scrollSize(ScrollbarOrientation) const OVERRIDE;
virtual IntPoint scrollPosition() const OVERRIDE;
virtual void setScrollOffset(const IntPoint&) OVERRIDE;
virtual void invalidateScrollbarRect(Scrollbar*, const IntRect&) OVERRIDE;
virtual bool isActive() const OVERRIDE;
virtual bool isScrollCornerVisible() const OVERRIDE { return false; } // We don't support resize on list boxes yet. If we did these would have to change.
virtual IntRect scrollCornerRect() const OVERRIDE { return IntRect(); }
virtual void invalidateScrollCornerRect(const IntRect&) OVERRIDE { }
virtual IntRect convertFromScrollbarToContainingView(const Scrollbar*, const IntRect&) const OVERRIDE;
virtual IntRect convertFromContainingViewToScrollbar(const Scrollbar*, const IntRect&) const OVERRIDE;
virtual IntPoint convertFromScrollbarToContainingView(const Scrollbar*, const IntPoint&) const OVERRIDE;
virtual IntPoint convertFromContainingViewToScrollbar(const Scrollbar*, const IntPoint&) const OVERRIDE;
virtual Scrollbar* verticalScrollbar() const OVERRIDE { return m_vBar.get(); }
virtual IntSize contentsSize() const OVERRIDE;
virtual int visibleHeight() const OVERRIDE;
virtual int visibleWidth() const OVERRIDE;
virtual IntPoint lastKnownMousePosition() const OVERRIDE;
virtual bool shouldSuspendScrollAnimations() const OVERRIDE;
virtual bool scrollbarsCanBeActive() const OVERRIDE;
virtual IntPoint minimumScrollPosition() const OVERRIDE;
virtual IntPoint maximumScrollPosition() const OVERRIDE;
virtual bool userInputScrollable(ScrollbarOrientation) const OVERRIDE;
virtual bool shouldPlaceVerticalScrollbarOnLeft() const OVERRIDE;
virtual int lineStep(ScrollbarOrientation) const;
virtual int pageStep(ScrollbarOrientation) const;
virtual float pixelStep(ScrollbarOrientation) const;
virtual ScrollableArea* enclosingScrollableArea() const OVERRIDE;
virtual IntRect scrollableAreaBoundingBox() const OVERRIDE;
// NOTE: This should only be called by the overriden setScrollOffset from ScrollableArea.
void scrollTo(int newOffset);
void setHasVerticalScrollbar(bool hasScrollbar);
PassRefPtr<Scrollbar> createScrollbar();
void destroyScrollbar();
LayoutUnit itemHeight() const;
void valueChanged(unsigned listIndex);
int numVisibleItems() const;
int numItems() const;
LayoutUnit listHeight() const;
void paintScrollbar(PaintInfo&, const LayoutPoint&);
void paintItemForeground(PaintInfo&, const LayoutPoint&, int listIndex);
void paintItemBackground(PaintInfo&, const LayoutPoint&, int listIndex);
void scrollToRevealSelection();
bool m_optionsChanged;
bool m_scrollToRevealSelectionAfterLayout;
bool m_inAutoscroll;
int m_optionsWidth;
int m_indexOffset;
RefPtr<Scrollbar> m_vBar;
};
inline RenderListBox* toRenderListBox(RenderObject* object)
{
ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isListBox());
return static_cast<RenderListBox*>(object);
}
// This will catch anyone doing an unnecessary cast.
void toRenderListBox(const RenderListBox*);
} // namepace WebCore
#endif // RenderListBox_h
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