Implement select element list box with shadow DOM.

Source/WebCore/rendering/RenderListBox.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  *               2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * 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. 
@@ skipping 50 matching lines @@
 #include <math.h>
 
 using namespace std;
 
 namespace WebCore {
 
 using namespace HTMLNames;
  
 const int rowSpacing = 1;
 
-const int optionsSpacingHorizontal = 2;
-
 // The minSize constant was originally defined to render scrollbars correctly.
 // This might vary for different platforms.
 const int minSize = 4;
 
 // Default size when the multiple attribute is present but size attribute is absent.
 const int defaultSize = 4;
 
-// FIXME: This hardcoded baselineAdjustment is what we used to do for the old
-// widget, but I'm not sure this is right for the new control.
-const int baselineAdjustment = 7;
-
 RenderListBox::RenderListBox(Element* element)
     : RenderBlock(element)
-    , m_optionsChanged(true)
-    , m_scrollToRevealSelectionAfterLayout(false)
-    , m_inAutoscroll(false)
-    , m_optionsWidth(0)
-    , m_indexOffset(0)
 {
     ASSERT(element);
     ASSERT(element->isHTMLElement());
     ASSERT(element->hasTagName(HTMLNames::selectTag));
-
-    if (FrameView* frameView = frame()->view())
-        frameView->addScrollableArea(this);
 }
 
 RenderListBox::~RenderListBox()
 {
-    setHasVerticalScrollbar(false);
-
-    if (FrameView* frameView = frame()->view())
-        frameView->removeScrollableArea(this);
 }
 
 inline HTMLSelectElement* RenderListBox::selectElement() const
 {
     return toHTMLSelectElement(node());
 }
 
-void RenderListBox::updateFromElement()
-{
-    FontCachePurgePreventer fontCachePurgePreventer;
-
-    if (m_optionsChanged) {
-        const Vector<HTMLElement*>& listItems = selectElement()->listItems();
-        int size = numItems();
-        
-        float width = 0;
-        for (int i = 0; i < size; ++i) {
-            HTMLElement* element = listItems[i];
-            String text;
-            Font itemFont = style()->font();
-            if (element->hasTagName(optionTag))
-                text = toHTMLOptionElement(element)->textIndentedToRespectGroupLabel();
-            else if (element->hasTagName(optgroupTag)) {
-                text = static_cast<const HTMLOptGroupElement*>(element)->groupLabelText();
-                FontDescription d = itemFont.fontDescription();
-                d.setWeight(d.bolderWeight());
-                itemFont = Font(d, itemFont.letterSpacing(), itemFont.wordSpacing());
-                itemFont.update(document()->styleResolver()->fontSelector());
-            }
-
-            if (!text.isEmpty()) {
-                applyTextTransform(style(), text, ' ');
-                // FIXME: Why is this always LTR? Can't text direction affect the width?
-                TextRun textRun = constructTextRun(this, itemFont, text, style(), TextRun::AllowTrailingExpansion);
-                textRun.disableRoundingHacks();
-                float textWidth = itemFont.width(textRun);
-                width = max(width, textWidth);
-            }
-        }
-        m_optionsWidth = static_cast<int>(ceilf(width));
-        m_optionsChanged = false;
-        
-        setHasVerticalScrollbar(true);
-
-        setNeedsLayoutAndPrefWidthsRecalc();
-    }
-}
-
-bool RenderListBox::canBeReplacedWithInlineRunIn() const
-{
-    return false;
-}
-
-void RenderListBox::selectionChanged()
-{
-    repaint();
-    if (!m_inAutoscroll) {
-        if (m_optionsChanged || needsLayout())
-            m_scrollToRevealSelectionAfterLayout = true;
-        else
-            scrollToRevealSelection();
-    }
-    
-    if (AXObjectCache* cache = document()->existingAXObjectCache())
-        cache->selectedChildrenChanged(this);
-}
-
-void RenderListBox::layout()
-{
-    StackStats::LayoutCheckPoint layoutCheckPoint;
-    RenderBlock::layout();
-
-    if (m_vBar) {
-        bool enabled = numVisibleItems() < numItems();
-        m_vBar->setEnabled(enabled);
-        m_vBar->setSteps(1, max(1, numVisibleItems() - 1), itemHeight());
-        m_vBar->setProportion(numVisibleItems(), numItems());
-        if (!enabled) {
-            scrollToOffsetWithoutAnimation(VerticalScrollbar, 0);
-            m_indexOffset = 0;
-        }
-    }
-
-    if (m_scrollToRevealSelectionAfterLayout) {
-        LayoutStateDisabler layoutStateDisabler(view());
-        scrollToRevealSelection();
-    }
-}
-
-void RenderListBox::scrollToRevealSelection()
-{    
-    HTMLSelectElement* select = selectElement();
-
-    m_scrollToRevealSelectionAfterLayout = false;
-
-    int firstIndex = select->activeSelectionStartListIndex();
-    if (firstIndex >= 0 && !listIndexIsVisible(select->activeSelectionEndListIndex()))
-        scrollToRevealElementAtListIndex(firstIndex);
-}
-
-void RenderListBox::computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const
-{
-    maxLogicalWidth = m_optionsWidth + 2 * optionsSpacingHorizontal;
-    if (m_vBar)
-        maxLogicalWidth += m_vBar->width();
-    if (!style()->width().isPercent())
-        minLogicalWidth = maxLogicalWidth;
-}
-
-void RenderListBox::computePreferredLogicalWidths()
-{
-    ASSERT(!m_optionsChanged);
-
-    m_minPreferredLogicalWidth = 0;
-    m_maxPreferredLogicalWidth = 0;
-
-    if (style()->width().isFixed() && style()->width().value() > 0)
-        m_minPreferredLogicalWidth = m_maxPreferredLogicalWidth = adjustContentBoxLogicalWidthForBoxSizing(style()->width().value());
-    else
-        computeIntrinsicLogicalWidths(m_minPreferredLogicalWidth, m_maxPreferredLogicalWidth);
-
-    if (style()->minWidth().isFixed() && style()->minWidth().value() > 0) {
-        m_maxPreferredLogicalWidth = max(m_maxPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(style()->minWidth().value()));
-        m_minPreferredLogicalWidth = max(m_minPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(style()->minWidth().value()));
-    }
-
-    if (style()->maxWidth().isFixed()) {
-        m_maxPreferredLogicalWidth = min(m_maxPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(style()->maxWidth().value()));
-        m_minPreferredLogicalWidth = min(m_minPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(style()->maxWidth().value()));
-    }
-
-    LayoutUnit toAdd = borderAndPaddingWidth();
-    m_minPreferredLogicalWidth += toAdd;
-    m_maxPreferredLogicalWidth += toAdd;
-                                
-    setPreferredLogicalWidthsDirty(false);
-}
-
 int RenderListBox::size() const
 {
     int specifiedSize = selectElement()->size();
     if (specifiedSize > 1)
         return max(minSize, specifiedSize);
 
     return defaultSize;
 }
 
-int RenderListBox::numVisibleItems() const
+LayoutUnit RenderListBox::itemHeight() const
 {
-    // Only count fully visible rows. But don't return 0 even if only part of a row shows.
-    return max<int>(1, (contentHeight() + rowSpacing) / itemHeight());
-}
-
-int RenderListBox::numItems() const
-{
-    return selectElement()->listItems().size();
-}
-
-LayoutUnit RenderListBox::listHeight() const
-{
-    return itemHeight() * numItems() - rowSpacing;
+    return style()->fontMetrics().height() + rowSpacing;
 }
 
 void RenderListBox::computeLogicalHeight(LayoutUnit, LayoutUnit logicalTop, LogicalExtentComputedValues& computedValues) const
 {
     LayoutUnit height = itemHeight() * size() - rowSpacing + borderAndPaddingHeight();
     RenderBox::computeLogicalHeight(height, logicalTop, computedValues);
 }
 
-int RenderListBox::baselinePosition(FontBaseline baselineType, bool firstLine, LineDirectionMode lineDirection, LinePositionMode linePositionMode) const
-{
-    return RenderBox::baselinePosition(baselineType, firstLine, lineDirection, linePositionMode) - baselineAdjustment;
-}
-
-LayoutRect RenderListBox::itemBoundingBoxRect(const LayoutPoint& additionalOffset, int index)
-{
-    return LayoutRect(additionalOffset.x() + borderLeft() + paddingLeft(),
-                   additionalOffset.y() + borderTop() + paddingTop() + itemHeight() * (index - m_indexOffset),
-                   contentWidth(), itemHeight());
-}
-    
-void RenderListBox::paintObject(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
-{
-    if (style()->visibility() != VISIBLE)
-        return;
-    
-    int listItemsSize = numItems();
-
-    if (paintInfo.phase == PaintPhaseForeground) {
-        int index = m_indexOffset;
-        while (index < listItemsSize && index <= m_indexOffset + numVisibleItems()) {
-            paintItemForeground(paintInfo, paintOffset, index);
-            index++;
-        }
-    }
-
-    // Paint the children.
-    RenderBlock::paintObject(paintInfo, paintOffset);
-
-    switch (paintInfo.phase) {
-    // Depending on whether we have overlay scrollbars they
-    // get rendered in the foreground or background phases
-    case PaintPhaseForeground:
-        if (m_vBar->isOverlayScrollbar())
-            paintScrollbar(paintInfo, paintOffset);
-        break;
-    case PaintPhaseBlockBackground:
-        if (!m_vBar->isOverlayScrollbar())
-            paintScrollbar(paintInfo, paintOffset);
-        break;
-    case PaintPhaseChildBlockBackground:
-    case PaintPhaseChildBlockBackgrounds: {
-        int index = m_indexOffset;
-        while (index < listItemsSize && index <= m_indexOffset + numVisibleItems()) {
-            paintItemBackground(paintInfo, paintOffset, index);
-            index++;
-        }
-        break;
-    }
-    default:
-        break;
-    }
-}
-
-void RenderListBox::addFocusRingRects(Vector<IntRect>& rects, const LayoutPoint& additionalOffset, const RenderLayerModelObject* paintContainer)
-{
-    if (!isSpatialNavigationEnabled(frame()))
-        return RenderBlock::addFocusRingRects(rects, additionalOffset, paintContainer);
-
-    HTMLSelectElement* select = selectElement();
-
-    // Focus the last selected item.
-    int selectedItem = select->activeSelectionEndListIndex();
-    if (selectedItem >= 0) {
-        rects.append(pixelSnappedIntRect(itemBoundingBoxRect(additionalOffset, selectedItem)));
-        return;
-    }
-
-    // No selected items, find the first non-disabled item.
-    int size = numItems();
-    const Vector<HTMLElement*>& listItems = select->listItems();
-    for (int i = 0; i < size; ++i) {
-        HTMLElement* element = listItems[i];
-        if (element->hasTagName(optionTag) && !element->isDisabledFormControl()) {
-            rects.append(pixelSnappedIntRect(itemBoundingBoxRect(additionalOffset, i)));
-            return;
-        }
-    }
-}
-
-void RenderListBox::paintScrollbar(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
-{
-    if (m_vBar) {
-        IntRect scrollRect = pixelSnappedIntRect(paintOffset.x() + width() - borderRight() - m_vBar->width(),
-            paintOffset.y() + borderTop(),
-            m_vBar->width(),
-            height() - (borderTop() + borderBottom()));
-        m_vBar->setFrameRect(scrollRect);
-        m_vBar->paint(paintInfo.context, paintInfo.rect);
-    }
-}
-
-static LayoutSize itemOffsetForAlignment(TextRun textRun, RenderStyle* itemStyle, Font itemFont, LayoutRect itemBoudingBox)
-{
-    ETextAlign actualAlignment = itemStyle->textAlign();
-    // FIXME: Firefox doesn't respect JUSTIFY. Should we?
-    // FIXME: Handle TAEND here
-    if (actualAlignment == TASTART || actualAlignment == JUSTIFY)
-      actualAlignment = itemStyle->isLeftToRightDirection() ? LEFT : RIGHT;
-
-    LayoutSize offset = LayoutSize(0, itemFont.fontMetrics().ascent());
-    if (actualAlignment == RIGHT || actualAlignment == WEBKIT_RIGHT) {
-        float textWidth = itemFont.width(textRun);
-        offset.setWidth(itemBoudingBox.width() - textWidth - optionsSpacingHorizontal);
-    } else if (actualAlignment == CENTER || actualAlignment == WEBKIT_CENTER) {
-        float textWidth = itemFont.width(textRun);
-        offset.setWidth((itemBoudingBox.width() - textWidth) / 2);
-    } else
-        offset.setWidth(optionsSpacingHorizontal);
-    return offset;
-}
-
-void RenderListBox::paintItemForeground(PaintInfo& paintInfo, const LayoutPoint& paintOffset, int listIndex)
-{
-    FontCachePurgePreventer fontCachePurgePreventer;
-
-    HTMLSelectElement* select = selectElement();
-
-    const Vector<HTMLElement*>& listItems = select->listItems();
-    HTMLElement* element = listItems[listIndex];
-
-    RenderStyle* itemStyle = element->renderStyle();
-    if (!itemStyle)
-        itemStyle = style();
-
-    if (itemStyle->visibility() == HIDDEN)
-        return;
-
-    String itemText;
-    bool isOptionElement = element->hasTagName(optionTag);
-    if (isOptionElement)
-        itemText = toHTMLOptionElement(element)->textIndentedToRespectGroupLabel();
-    else if (element->hasTagName(optgroupTag))
-        itemText = static_cast<const HTMLOptGroupElement*>(element)->groupLabelText();
-    applyTextTransform(style(), itemText, ' ');
-
-    Color textColor = element->renderStyle() ? element->renderStyle()->visitedDependentColor(CSSPropertyColor) : style()->visitedDependentColor(CSSPropertyColor);
-    if (isOptionElement && toHTMLOptionElement(element)->selected()) {
-        if (frame()->selection()->isFocusedAndActive() && document()->focusedNode() == node())
-            textColor = theme()->activeListBoxSelectionForegroundColor();
-        // Honor the foreground color for disabled items
-        else if (!element->isDisabledFormControl() && !select->isDisabledFormControl())
-            textColor = theme()->inactiveListBoxSelectionForegroundColor();
-    }
-
-    ColorSpace colorSpace = itemStyle->colorSpace();
-    paintInfo.context->setFillColor(textColor, colorSpace);
-
-    TextRun textRun(itemText, 0, 0, TextRun::AllowTrailingExpansion, itemStyle->direction(), isOverride(itemStyle->unicodeBidi()), true, TextRun::NoRounding);
-    Font itemFont = style()->font();
-    LayoutRect r = itemBoundingBoxRect(paintOffset, listIndex);
-    r.move(itemOffsetForAlignment(textRun, itemStyle, itemFont, r));
-
-    if (element->hasTagName(optgroupTag)) {
-        FontDescription d = itemFont.fontDescription();
-        d.setWeight(d.bolderWeight());
-        itemFont = Font(d, itemFont.letterSpacing(), itemFont.wordSpacing());
-        itemFont.update(document()->styleResolver()->fontSelector());
-    }
-
-    // Draw the item text
-    paintInfo.context->drawBidiText(itemFont, textRun, roundedIntPoint(r.location()));
-}
-
-void RenderListBox::paintItemBackground(PaintInfo& paintInfo, const LayoutPoint& paintOffset, int listIndex)
-{
-    const Vector<HTMLElement*>& listItems = selectElement()->listItems();
-    HTMLElement* element = listItems[listIndex];
-
-    Color backColor;
-    if (element->hasTagName(optionTag) && toHTMLOptionElement(element)->selected()) {
-        if (frame()->selection()->isFocusedAndActive() && document()->focusedNode() == node())
-            backColor = theme()->activeListBoxSelectionBackgroundColor();
-        else
-            backColor = theme()->inactiveListBoxSelectionBackgroundColor();
-    } else
-        backColor = element->renderStyle() ? element->renderStyle()->visitedDependentColor(CSSPropertyBackgroundColor) : style()->visitedDependentColor(CSSPropertyBackgroundColor);
-
-    // Draw the background for this list box item
-    if (!element->renderStyle() || element->renderStyle()->visibility() != HIDDEN) {
-        ColorSpace colorSpace = element->renderStyle() ? element->renderStyle()->colorSpace() : style()->colorSpace();
-        LayoutRect itemRect = itemBoundingBoxRect(paintOffset, listIndex);
-        itemRect.intersect(controlClipRect(paintOffset));
-        paintInfo.context->fillRect(pixelSnappedIntRect(itemRect), backColor, colorSpace);
-    }
-}
-
-bool RenderListBox::isPointInOverflowControl(HitTestResult& result, const LayoutPoint& locationInContainer, const LayoutPoint& accumulatedOffset)
-{
-    if (!m_vBar || !m_vBar->shouldParticipateInHitTesting())
-        return false;
-
-    LayoutRect vertRect(accumulatedOffset.x() + width() - borderRight() - m_vBar->width(),
-                        accumulatedOffset.y() + borderTop(),
-                        m_vBar->width(),
-                        height() - borderTop() - borderBottom());
-
-    if (vertRect.contains(locationInContainer)) {
-        result.setScrollbar(m_vBar.get());
-        return true;
-    }
-    return false;
-}
-
-int RenderListBox::listIndexAtOffset(const LayoutSize& offset)
-{
-    if (!numItems())
-        return -1;
-
-    if (offset.height() < borderTop() + paddingTop() || offset.height() > height() - paddingBottom() - borderBottom())
-        return -1;
-
-    int scrollbarWidth = m_vBar ? m_vBar->width() : 0;
-    if (offset.width() < borderLeft() + paddingLeft() || offset.width() > width() - borderRight() - paddingRight() - scrollbarWidth)
-        return -1;
-
-    int newOffset = (offset.height() - borderTop() - paddingTop()) / itemHeight() + m_indexOffset;
-    return newOffset < numItems() ? newOffset : -1;
-}
-
-void RenderListBox::panScroll(const IntPoint& panStartMousePosition)
-{
-    const int maxSpeed = 20;
-    const int iconRadius = 7;
-    const int speedReducer = 4;
-
-    // FIXME: This doesn't work correctly with transforms.
-    FloatPoint absOffset = localToAbsolute();
-
-    IntPoint lastKnownMousePosition = frame()->eventHandler()->lastKnownMousePosition();
-    // We need to check if the last known mouse position is out of the window. When the mouse is out of the window, the position is incoherent
-    static IntPoint previousMousePosition;
-    if (lastKnownMousePosition.y() < 0)
-        lastKnownMousePosition = previousMousePosition;
-    else
-        previousMousePosition = lastKnownMousePosition;
-
-    int yDelta = lastKnownMousePosition.y() - panStartMousePosition.y();
-
-    // If the point is too far from the center we limit the speed
-    yDelta = max<int>(min<int>(yDelta, maxSpeed), -maxSpeed);
-    
-    if (abs(yDelta) < iconRadius) // at the center we let the space for the icon
-        return;
-
-    if (yDelta > 0)
-        //offsetY = view()->viewHeight();
-        absOffset.move(0, listHeight());
-    else if (yDelta < 0)
-        yDelta--;
-
-    // Let's attenuate the speed
-    yDelta /= speedReducer;
-
-    IntPoint scrollPoint(0, 0);
-    scrollPoint.setY(absOffset.y() + yDelta);
-    int newOffset = scrollToward(scrollPoint);
-    if (newOffset < 0) 
-        return;
-
-    m_inAutoscroll = true;
-    HTMLSelectElement* select = selectElement();
-    select->updateListBoxSelection(!select->multiple());
-    m_inAutoscroll = false;
-}
-
-int RenderListBox::scrollToward(const IntPoint& destination)
-{
-    // FIXME: This doesn't work correctly with transforms.
-    FloatPoint absPos = localToAbsolute();
-    IntSize positionOffset = roundedIntSize(destination - absPos);
-
-    int rows = numVisibleItems();
-    int offset = m_indexOffset;
-    
-    if (positionOffset.height() < borderTop() + paddingTop() && scrollToRevealElementAtListIndex(offset - 1))
-        return offset - 1;
-    
-    if (positionOffset.height() > height() - paddingBottom() - borderBottom() && scrollToRevealElementAtListIndex(offset + rows))
-        return offset + rows - 1;
-    
-    return listIndexAtOffset(positionOffset);
-}
-
-void RenderListBox::autoscroll(const IntPoint&)
-{
-    IntPoint pos = frame()->view()->windowToContents(frame()->eventHandler()->lastKnownMousePosition());
-
-    int endIndex = scrollToward(pos);
-    if (endIndex >= 0) {
-        HTMLSelectElement* select = selectElement();
-        m_inAutoscroll = true;
-
-        if (!select->multiple())
-            select->setActiveSelectionAnchorIndex(endIndex);
-
-        select->setActiveSelectionEndIndex(endIndex);
-        select->updateListBoxSelection(!select->multiple());
-        m_inAutoscroll = false;
-    }
-}
-
-void RenderListBox::stopAutoscroll()
-{
-    selectElement()->listBoxOnChange();
-}
-
-bool RenderListBox::scrollToRevealElementAtListIndex(int index)
-{
-    if (index < 0 || index >= numItems() || listIndexIsVisible(index))
-        return false;
-
-    int newOffset;
-    if (index < m_indexOffset)
-        newOffset = index;
-    else
-        newOffset = index - numVisibleItems() + 1;
-
-    scrollToOffsetWithoutAnimation(VerticalScrollbar, newOffset);
-
-    return true;
-}
-
-bool RenderListBox::listIndexIsVisible(int index)
-{    
-    return index >= m_indexOffset && index < m_indexOffset + numVisibleItems();
-}
-
-bool RenderListBox::scroll(ScrollDirection direction, ScrollGranularity granularity, float multiplier, Node**)
-{
-    return ScrollableArea::scroll(direction, granularity, multiplier);
-}
-
-bool RenderListBox::logicalScroll(ScrollLogicalDirection direction, ScrollGranularity granularity, float multiplier, Node**)
-{
-    return ScrollableArea::scroll(logicalToPhysical(direction, style()->isHorizontalWritingMode(), style()->isFlippedBlocksWritingMode()), granularity, multiplier);
-}
-
-void RenderListBox::valueChanged(unsigned listIndex)
-{
-    HTMLSelectElement* element = selectElement();
-    element->setSelectedIndex(element->listToOptionIndex(listIndex));
-    element->dispatchFormControlChangeEvent();
-}
-
-int RenderListBox::scrollSize(ScrollbarOrientation orientation) const
-{
-    return ((orientation == VerticalScrollbar) && m_vBar) ? (m_vBar->totalSize() - m_vBar->visibleSize()) : 0;
-}
-
-int RenderListBox::scrollPosition(Scrollbar*) const
-{
-    return m_indexOffset;
-}
-
-void RenderListBox::setScrollOffset(const IntPoint& offset)
-{
-    scrollTo(offset.y());
-}
-
-void RenderListBox::scrollTo(int newOffset)
-{
-    if (newOffset == m_indexOffset)
-        return;
-
-    m_indexOffset = newOffset;
-    repaint();
-    node()->document()->eventQueue()->enqueueOrDispatchScrollEvent(node(), DocumentEventQueue::ScrollEventElementTarget);
-}
-
-LayoutUnit RenderListBox::itemHeight() const
-{
-    return style()->fontMetrics().height() + rowSpacing;
-}
-
-int RenderListBox::verticalScrollbarWidth() const
-{
-    return m_vBar && !m_vBar->isOverlayScrollbar() ? m_vBar->width() : 0;
-}
-
-// FIXME: We ignore padding in the vertical direction as far as these values are concerned, since that's
-// how the control currently paints.
-int RenderListBox::scrollWidth() const
-{
-    // There is no horizontal scrolling allowed.
-    return pixelSnappedClientWidth();
-}
-
-int RenderListBox::scrollHeight() const
-{
-    return max(pixelSnappedClientHeight(), roundToInt(listHeight()));
-}
-
-int RenderListBox::scrollLeft() const
-{
-    return 0;
-}
-
-void RenderListBox::setScrollLeft(int)
-{
-}
-
-int RenderListBox::scrollTop() const
-{
-    return m_indexOffset * itemHeight();
-}
-
-void RenderListBox::setScrollTop(int newTop)
-{
-    // Determine an index and scroll to it.    
-    int index = newTop / itemHeight();
-    if (index < 0 || index >= numItems() || index == m_indexOffset)
-        return;
-    
-    scrollToOffsetWithoutAnimation(VerticalScrollbar, index);
-}
-
-bool RenderListBox::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction hitTestAction)
-{
-    if (!RenderBlock::nodeAtPoint(request, result, locationInContainer, accumulatedOffset, hitTestAction))
-        return false;
-    const Vector<HTMLElement*>& listItems = selectElement()->listItems();
-    int size = numItems();
-    LayoutPoint adjustedLocation = accumulatedOffset + location();
-
-    for (int i = 0; i < size; ++i) {
-        if (itemBoundingBoxRect(adjustedLocation, i).contains(locationInContainer.point())) {
-            if (Element* node = listItems[i]) {
-                result.setInnerNode(node);
-                if (!result.innerNonSharedNode())
-                    result.setInnerNonSharedNode(node);
-                result.setLocalPoint(locationInContainer.point() - toLayoutSize(adjustedLocation));
-                break;
-            }
-        }
-    }
-
-    return true;
-}
-
-LayoutRect RenderListBox::controlClipRect(const LayoutPoint& additionalOffset) const
-{
-    LayoutRect clipRect = contentBoxRect();
-    clipRect.moveBy(additionalOffset);
-    return clipRect;
-}
-
-bool RenderListBox::isActive() const
-{
-    Page* page = frame()->page();
-    return page && page->focusController()->isActive();
-}
-
-void RenderListBox::invalidateScrollbarRect(Scrollbar* scrollbar, const IntRect& rect)
-{
-    IntRect scrollRect = rect;
-    scrollRect.move(width() - borderRight() - scrollbar->width(), borderTop());
-    repaintRectangle(scrollRect);
-}
-
-IntRect RenderListBox::convertFromScrollbarToContainingView(const Scrollbar* scrollbar, const IntRect& scrollbarRect) const
-{
-    RenderView* view = this->view();
-    if (!view)
-        return scrollbarRect;
-
-    IntRect rect = scrollbarRect;
-
-    int scrollbarLeft = width() - borderRight() - scrollbar->width();
-    int scrollbarTop = borderTop();
-    rect.move(scrollbarLeft, scrollbarTop);
-
-    return view->frameView()->convertFromRenderer(this, rect);
-}
-
-IntRect RenderListBox::convertFromContainingViewToScrollbar(const Scrollbar* scrollbar, const IntRect& parentRect) const
-{
-    RenderView* view = this->view();
-    if (!view)
-        return parentRect;
-
-    IntRect rect = view->frameView()->convertToRenderer(this, parentRect);
-
-    int scrollbarLeft = width() - borderRight() - scrollbar->width();
-    int scrollbarTop = borderTop();
-    rect.move(-scrollbarLeft, -scrollbarTop);
-    return rect;
-}
-
-IntPoint RenderListBox::convertFromScrollbarToContainingView(const Scrollbar* scrollbar, const IntPoint& scrollbarPoint) const
-{
-    RenderView* view = this->view();
-    if (!view)
-        return scrollbarPoint;
-
-    IntPoint point = scrollbarPoint;
-
-    int scrollbarLeft = width() - borderRight() - scrollbar->width();
-    int scrollbarTop = borderTop();
-    point.move(scrollbarLeft, scrollbarTop);
-
-    return view->frameView()->convertFromRenderer(this, point);
-}
-
-IntPoint RenderListBox::convertFromContainingViewToScrollbar(const Scrollbar* scrollbar, const IntPoint& parentPoint) const
-{
-    RenderView* view = this->view();
-    if (!view)
-        return parentPoint;
-
-    IntPoint point = view->frameView()->convertToRenderer(this, parentPoint);
-
-    int scrollbarLeft = width() - borderRight() - scrollbar->width();
-    int scrollbarTop = borderTop();
-    point.move(-scrollbarLeft, -scrollbarTop);
-    return point;
-}
-
-IntSize RenderListBox::contentsSize() const
-{
-    return IntSize(scrollWidth(), scrollHeight());
-}
-
-int RenderListBox::visibleHeight() const
-{
-    return height();
-}
-
-int RenderListBox::visibleWidth() const
-{
-    return width();
-}
-
-IntPoint RenderListBox::lastKnownMousePosition() const
-{
-    RenderView* view = this->view();
-    if (!view)
-        return IntPoint();
-    return view->frameView()->lastKnownMousePosition();
-}
-
-bool RenderListBox::shouldSuspendScrollAnimations() const
-{
-    RenderView* view = this->view();
-    if (!view)
-        return true;
-    return view->frameView()->shouldSuspendScrollAnimations();
-}
-
-bool RenderListBox::scrollbarsCanBeActive() const
-{
-    RenderView* view = this->view();
-    if (!view)
-        return false;
-    return view->frameView()->scrollbarsCanBeActive();
-}
-
-ScrollableArea* RenderListBox::enclosingScrollableArea() const
-{
-    // FIXME: Return a RenderLayer that's scrollable.
-    return 0;
-}
-
-IntRect RenderListBox::scrollableAreaBoundingBox() const
-{
-    return absoluteBoundingBoxRect();
-}
-
-PassRefPtr<Scrollbar> RenderListBox::createScrollbar()
-{
-    RefPtr<Scrollbar> widget;
-    bool hasCustomScrollbarStyle = style()->hasPseudoStyle(SCROLLBAR);
-    if (hasCustomScrollbarStyle)
-        widget = RenderScrollbar::createCustomScrollbar(this, VerticalScrollbar, this->node());
-    else {
-        widget = Scrollbar::createNativeScrollbar(this, VerticalScrollbar, theme()->scrollbarControlSizeForPart(ListboxPart));
-        didAddVerticalScrollbar(widget.get());
-    }
-    document()->view()->addChild(widget.get());        
-    return widget.release();
-}
-
-void RenderListBox::destroyScrollbar()
-{
-    if (!m_vBar)
-        return;
-
-    if (!m_vBar->isCustomScrollbar())
-        ScrollableArea::willRemoveVerticalScrollbar(m_vBar.get());
-    m_vBar->removeFromParent();
-    m_vBar->disconnectFromScrollableArea();
-    m_vBar = 0;
-}
-
-void RenderListBox::setHasVerticalScrollbar(bool hasScrollbar)
-{
-    if (hasScrollbar == (m_vBar != 0))
-        return;
-
-    if (hasScrollbar)
-        m_vBar = createScrollbar();
-    else
-        destroyScrollbar();
-
-    if (m_vBar)
-        m_vBar->styleChanged();
-
-    // Force an update since we know the scrollbars have changed things.
-    if (document()->hasAnnotatedRegions())
-        document()->setAnnotatedRegionsDirty(true);
-}
-
 } // namespace WebCore