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      1 /*
      2  * This file is part of the select element renderer in WebCore.
      3  *
      4  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
      5  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
      6  *               2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
      7  *
      8  * This library is free software; you can redistribute it and/or
      9  * modify it under the terms of the GNU Library General Public
     10  * License as published by the Free Software Foundation; either
     11  * version 2 of the License, or (at your option) any later version.
     12  *
     13  * This library is distributed in the hope that it will be useful,
     14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     16  * Library General Public License for more details.
     17  *
     18  * You should have received a copy of the GNU Library General Public License
     19  * along with this library; see the file COPYING.LIB.  If not, write to
     20  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     21  * Boston, MA 02110-1301, USA.
     22  *
     23  */
     24 
     25 #include "config.h"
     26 #include "core/rendering/RenderMenuList.h"
     27 
     28 #include <math.h>
     29 #include "HTMLNames.h"
     30 #include "core/accessibility/AXMenuList.h"
     31 #include "core/accessibility/AXObjectCache.h"
     32 #include "core/css/CSSFontSelector.h"
     33 #include "core/css/resolver/StyleResolver.h"
     34 #include "core/dom/NodeRenderStyle.h"
     35 #include "core/html/HTMLOptGroupElement.h"
     36 #include "core/html/HTMLOptionElement.h"
     37 #include "core/html/HTMLSelectElement.h"
     38 #include "core/page/Chrome.h"
     39 #include "core/frame/Frame.h"
     40 #include "core/frame/FrameView.h"
     41 #include "core/page/Page.h"
     42 #include "core/rendering/RenderBR.h"
     43 #include "core/rendering/RenderScrollbar.h"
     44 #include "core/rendering/RenderTheme.h"
     45 #include "core/rendering/RenderView.h"
     46 #include "platform/fonts/FontCache.h"
     47 #include "platform/geometry/IntSize.h"
     48 
     49 using namespace std;
     50 
     51 namespace WebCore {
     52 
     53 using namespace HTMLNames;
     54 
     55 RenderMenuList::RenderMenuList(Element* element)
     56     : RenderFlexibleBox(element)
     57     , m_buttonText(0)
     58     , m_innerBlock(0)
     59     , m_optionsChanged(true)
     60     , m_optionsWidth(0)
     61     , m_lastActiveIndex(-1)
     62     , m_popupIsVisible(false)
     63 {
     64     ASSERT(element);
     65     ASSERT(element->isHTMLElement());
     66     ASSERT(element->hasTagName(HTMLNames::selectTag));
     67 }
     68 
     69 RenderMenuList::~RenderMenuList()
     70 {
     71     if (m_popup)
     72         m_popup->disconnectClient();
     73     m_popup = 0;
     74 }
     75 
     76 void RenderMenuList::createInnerBlock()
     77 {
     78     if (m_innerBlock) {
     79         ASSERT(firstChild() == m_innerBlock);
     80         ASSERT(!m_innerBlock->nextSibling());
     81         return;
     82     }
     83 
     84     // Create an anonymous block.
     85     ASSERT(!firstChild());
     86     m_innerBlock = createAnonymousBlock();
     87     adjustInnerStyle();
     88     RenderFlexibleBox::addChild(m_innerBlock);
     89 }
     90 
     91 void RenderMenuList::adjustInnerStyle()
     92 {
     93     RenderStyle* innerStyle = m_innerBlock->style();
     94     innerStyle->setFlexGrow(1);
     95     innerStyle->setFlexShrink(1);
     96     // min-width: 0; is needed for correct shrinking.
     97     // FIXME: Remove this line when https://bugs.webkit.org/show_bug.cgi?id=111790 is fixed.
     98     innerStyle->setMinWidth(Length(0, Fixed));
     99     // Use margin:auto instead of align-items:center to get safe centering, i.e.
    100     // when the content overflows, treat it the same as align-items: flex-start.
    101     // But we only do that for the cases where html.css would otherwise use center.
    102     if (style()->alignItems() == AlignCenter) {
    103         innerStyle->setMarginTop(Length());
    104         innerStyle->setMarginBottom(Length());
    105         innerStyle->setAlignSelf(AlignFlexStart);
    106     }
    107 
    108     innerStyle->setPaddingLeft(Length(RenderTheme::theme().popupInternalPaddingLeft(style()), Fixed));
    109     innerStyle->setPaddingRight(Length(RenderTheme::theme().popupInternalPaddingRight(style()), Fixed));
    110     innerStyle->setPaddingTop(Length(RenderTheme::theme().popupInternalPaddingTop(style()), Fixed));
    111     innerStyle->setPaddingBottom(Length(RenderTheme::theme().popupInternalPaddingBottom(style()), Fixed));
    112 
    113     if (m_optionStyle) {
    114         if ((m_optionStyle->direction() != innerStyle->direction() || m_optionStyle->unicodeBidi() != innerStyle->unicodeBidi()))
    115             m_innerBlock->setNeedsLayoutAndPrefWidthsRecalc();
    116         innerStyle->setTextAlign(style()->isLeftToRightDirection() ? LEFT : RIGHT);
    117         innerStyle->setDirection(m_optionStyle->direction());
    118         innerStyle->setUnicodeBidi(m_optionStyle->unicodeBidi());
    119     }
    120 }
    121 
    122 inline HTMLSelectElement* RenderMenuList::selectElement() const
    123 {
    124     return toHTMLSelectElement(node());
    125 }
    126 
    127 void RenderMenuList::addChild(RenderObject* newChild, RenderObject* beforeChild)
    128 {
    129     createInnerBlock();
    130     m_innerBlock->addChild(newChild, beforeChild);
    131     ASSERT(m_innerBlock == firstChild());
    132 
    133     if (AXObjectCache* cache = document().existingAXObjectCache())
    134         cache->childrenChanged(this);
    135 }
    136 
    137 void RenderMenuList::removeChild(RenderObject* oldChild)
    138 {
    139     if (oldChild == m_innerBlock || !m_innerBlock) {
    140         RenderFlexibleBox::removeChild(oldChild);
    141         m_innerBlock = 0;
    142     } else
    143         m_innerBlock->removeChild(oldChild);
    144 }
    145 
    146 void RenderMenuList::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
    147 {
    148     RenderBlock::styleDidChange(diff, oldStyle);
    149 
    150     if (m_buttonText)
    151         m_buttonText->setStyle(style());
    152     if (m_innerBlock) // RenderBlock handled updating the anonymous block's style.
    153         adjustInnerStyle();
    154 
    155     bool fontChanged = !oldStyle || oldStyle->font() != style()->font();
    156     if (fontChanged)
    157         updateOptionsWidth();
    158 }
    159 
    160 void RenderMenuList::updateOptionsWidth()
    161 {
    162     float maxOptionWidth = 0;
    163     const Vector<HTMLElement*>& listItems = selectElement()->listItems();
    164     int size = listItems.size();
    165     FontCachePurgePreventer fontCachePurgePreventer;
    166 
    167     for (int i = 0; i < size; ++i) {
    168         HTMLElement* element = listItems[i];
    169         if (!element->hasTagName(optionTag))
    170             continue;
    171 
    172         String text = toHTMLOptionElement(element)->textIndentedToRespectGroupLabel();
    173         applyTextTransform(style(), text, ' ');
    174         if (RenderTheme::theme().popupOptionSupportsTextIndent()) {
    175             // Add in the option's text indent.  We can't calculate percentage values for now.
    176             float optionWidth = 0;
    177             if (RenderStyle* optionStyle = element->renderStyle())
    178                 optionWidth += minimumValueForLength(optionStyle->textIndent(), 0, view());
    179             if (!text.isEmpty())
    180                 optionWidth += style()->font().width(text);
    181             maxOptionWidth = max(maxOptionWidth, optionWidth);
    182         } else if (!text.isEmpty())
    183             maxOptionWidth = max(maxOptionWidth, style()->font().width(text));
    184     }
    185 
    186     int width = static_cast<int>(ceilf(maxOptionWidth));
    187     if (m_optionsWidth == width)
    188         return;
    189 
    190     m_optionsWidth = width;
    191     if (parent())
    192         setNeedsLayoutAndPrefWidthsRecalc();
    193 }
    194 
    195 void RenderMenuList::updateFromElement()
    196 {
    197     if (m_optionsChanged) {
    198         updateOptionsWidth();
    199         m_optionsChanged = false;
    200     }
    201 
    202     if (m_popupIsVisible)
    203         m_popup->updateFromElement();
    204     else
    205         setTextFromOption(selectElement()->selectedIndex());
    206 }
    207 
    208 void RenderMenuList::setTextFromOption(int optionIndex)
    209 {
    210     HTMLSelectElement* select = selectElement();
    211     const Vector<HTMLElement*>& listItems = select->listItems();
    212     int size = listItems.size();
    213 
    214     int i = select->optionToListIndex(optionIndex);
    215     String text = emptyString();
    216     if (i >= 0 && i < size) {
    217         Element* element = listItems[i];
    218         if (element->hasTagName(optionTag)) {
    219             text = toHTMLOptionElement(element)->textIndentedToRespectGroupLabel();
    220             m_optionStyle = element->renderStyle();
    221         }
    222     }
    223 
    224     setText(text.stripWhiteSpace());
    225     didUpdateActiveOption(optionIndex);
    226 }
    227 
    228 void RenderMenuList::setText(const String& s)
    229 {
    230     if (s.isEmpty()) {
    231         if (!m_buttonText || !m_buttonText->isBR()) {
    232             if (m_buttonText)
    233                 m_buttonText->destroy();
    234             m_buttonText = new RenderBR(&document());
    235             m_buttonText->setStyle(style());
    236             addChild(m_buttonText);
    237         }
    238     } else {
    239         if (m_buttonText && !m_buttonText->isBR())
    240             m_buttonText->setText(s.impl(), true);
    241         else {
    242             if (m_buttonText)
    243                 m_buttonText->destroy();
    244             m_buttonText = new RenderText(&document(), s.impl());
    245             m_buttonText->setStyle(style());
    246             // We need to set the text explicitly though it was specified in the
    247             // constructor because RenderText doesn't refer to the text
    248             // specified in the constructor in a case of re-transforming.
    249             m_buttonText->setText(s.impl(), true);
    250             addChild(m_buttonText);
    251         }
    252         adjustInnerStyle();
    253     }
    254 }
    255 
    256 String RenderMenuList::text() const
    257 {
    258     return m_buttonText ? m_buttonText->text() : String();
    259 }
    260 
    261 LayoutRect RenderMenuList::controlClipRect(const LayoutPoint& additionalOffset) const
    262 {
    263     // Clip to the intersection of the content box and the content box for the inner box
    264     // This will leave room for the arrows which sit in the inner box padding,
    265     // and if the inner box ever spills out of the outer box, that will get clipped too.
    266     LayoutRect outerBox(additionalOffset.x() + borderLeft() + paddingLeft(),
    267                    additionalOffset.y() + borderTop() + paddingTop(),
    268                    contentWidth(),
    269                    contentHeight());
    270 
    271     LayoutRect innerBox(additionalOffset.x() + m_innerBlock->x() + m_innerBlock->paddingLeft(),
    272                    additionalOffset.y() + m_innerBlock->y() + m_innerBlock->paddingTop(),
    273                    m_innerBlock->contentWidth(),
    274                    m_innerBlock->contentHeight());
    275 
    276     return intersection(outerBox, innerBox);
    277 }
    278 
    279 void RenderMenuList::computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const
    280 {
    281     maxLogicalWidth = max(m_optionsWidth, RenderTheme::theme().minimumMenuListSize(style())) + m_innerBlock->paddingLeft() + m_innerBlock->paddingRight();
    282     if (!style()->width().isPercent())
    283         minLogicalWidth = maxLogicalWidth;
    284 }
    285 
    286 void RenderMenuList::computePreferredLogicalWidths()
    287 {
    288     m_minPreferredLogicalWidth = 0;
    289     m_maxPreferredLogicalWidth = 0;
    290 
    291     if (style()->width().isFixed() && style()->width().value() > 0)
    292         m_minPreferredLogicalWidth = m_maxPreferredLogicalWidth = adjustContentBoxLogicalWidthForBoxSizing(style()->width().value());
    293     else
    294         computeIntrinsicLogicalWidths(m_minPreferredLogicalWidth, m_maxPreferredLogicalWidth);
    295 
    296     if (style()->minWidth().isFixed() && style()->minWidth().value() > 0) {
    297         m_maxPreferredLogicalWidth = max(m_maxPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(style()->minWidth().value()));
    298         m_minPreferredLogicalWidth = max(m_minPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(style()->minWidth().value()));
    299     }
    300 
    301     if (style()->maxWidth().isFixed()) {
    302         m_maxPreferredLogicalWidth = min(m_maxPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(style()->maxWidth().value()));
    303         m_minPreferredLogicalWidth = min(m_minPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(style()->maxWidth().value()));
    304     }
    305 
    306     LayoutUnit toAdd = borderAndPaddingWidth();
    307     m_minPreferredLogicalWidth += toAdd;
    308     m_maxPreferredLogicalWidth += toAdd;
    309 
    310     clearPreferredLogicalWidthsDirty();
    311 }
    312 
    313 void RenderMenuList::showPopup()
    314 {
    315     if (m_popupIsVisible)
    316         return;
    317 
    318     if (document().page()->chrome().hasOpenedPopup())
    319         return;
    320 
    321     // Create m_innerBlock here so it ends up as the first child.
    322     // This is important because otherwise we might try to create m_innerBlock
    323     // inside the showPopup call and it would fail.
    324     createInnerBlock();
    325     if (!m_popup)
    326         m_popup = document().page()->chrome().createPopupMenu(*document().frame(), this);
    327     m_popupIsVisible = true;
    328 
    329     FloatQuad quad(localToAbsoluteQuad(FloatQuad(borderBoundingBox())));
    330     IntSize size = pixelSnappedIntRect(frameRect()).size();
    331     HTMLSelectElement* select = selectElement();
    332     m_popup->show(quad, size, select->optionToListIndex(select->selectedIndex()));
    333 }
    334 
    335 void RenderMenuList::hidePopup()
    336 {
    337     if (m_popup)
    338         m_popup->hide();
    339 }
    340 
    341 void RenderMenuList::valueChanged(unsigned listIndex, bool fireOnChange)
    342 {
    343     // Check to ensure a page navigation has not occurred while
    344     // the popup was up.
    345     Document& doc = toElement(node())->document();
    346     if (&doc != doc.frame()->document())
    347         return;
    348 
    349     HTMLSelectElement* select = selectElement();
    350     select->optionSelectedByUser(select->listToOptionIndex(listIndex), fireOnChange);
    351 }
    352 
    353 void RenderMenuList::listBoxSelectItem(int listIndex, bool allowMultiplySelections, bool shift, bool fireOnChangeNow)
    354 {
    355     selectElement()->listBoxSelectItem(listIndex, allowMultiplySelections, shift, fireOnChangeNow);
    356 }
    357 
    358 bool RenderMenuList::multiple() const
    359 {
    360     return selectElement()->multiple();
    361 }
    362 
    363 void RenderMenuList::didSetSelectedIndex(int listIndex)
    364 {
    365     didUpdateActiveOption(selectElement()->listToOptionIndex(listIndex));
    366 }
    367 
    368 void RenderMenuList::didUpdateActiveOption(int optionIndex)
    369 {
    370     if (!AXObjectCache::accessibilityEnabled() || !document().existingAXObjectCache())
    371         return;
    372 
    373     if (m_lastActiveIndex == optionIndex)
    374         return;
    375     m_lastActiveIndex = optionIndex;
    376 
    377     HTMLSelectElement* select = selectElement();
    378     int listIndex = select->optionToListIndex(optionIndex);
    379     if (listIndex < 0 || listIndex >= static_cast<int>(select->listItems().size()))
    380         return;
    381     if (AXMenuList* menuList = toAXMenuList(document().axObjectCache()->get(this)))
    382         menuList->didUpdateActiveOption(optionIndex);
    383 }
    384 
    385 String RenderMenuList::itemText(unsigned listIndex) const
    386 {
    387     HTMLSelectElement* select = selectElement();
    388     const Vector<HTMLElement*>& listItems = select->listItems();
    389     if (listIndex >= listItems.size())
    390         return String();
    391 
    392     String itemString;
    393     Element* element = listItems[listIndex];
    394     if (isHTMLOptGroupElement(element))
    395         itemString = toHTMLOptGroupElement(element)->groupLabelText();
    396     else if (element->hasTagName(optionTag))
    397         itemString = toHTMLOptionElement(element)->textIndentedToRespectGroupLabel();
    398 
    399     applyTextTransform(style(), itemString, ' ');
    400     return itemString;
    401 }
    402 
    403 String RenderMenuList::itemLabel(unsigned) const
    404 {
    405     return String();
    406 }
    407 
    408 String RenderMenuList::itemIcon(unsigned) const
    409 {
    410     return String();
    411 }
    412 
    413 String RenderMenuList::itemAccessibilityText(unsigned listIndex) const
    414 {
    415     // Allow the accessible name be changed if necessary.
    416     const Vector<HTMLElement*>& listItems = selectElement()->listItems();
    417     if (listIndex >= listItems.size())
    418         return String();
    419     return listItems[listIndex]->fastGetAttribute(aria_labelAttr);
    420 }
    421 
    422 String RenderMenuList::itemToolTip(unsigned listIndex) const
    423 {
    424     const Vector<HTMLElement*>& listItems = selectElement()->listItems();
    425     if (listIndex >= listItems.size())
    426         return String();
    427     return listItems[listIndex]->title();
    428 }
    429 
    430 bool RenderMenuList::itemIsEnabled(unsigned listIndex) const
    431 {
    432     const Vector<HTMLElement*>& listItems = selectElement()->listItems();
    433     if (listIndex >= listItems.size())
    434         return false;
    435     HTMLElement* element = listItems[listIndex];
    436     if (!element->hasTagName(optionTag))
    437         return false;
    438 
    439     bool groupEnabled = true;
    440     if (Element* parentElement = element->parentElement()) {
    441         if (isHTMLOptGroupElement(parentElement))
    442             groupEnabled = !parentElement->isDisabledFormControl();
    443     }
    444     if (!groupEnabled)
    445         return false;
    446 
    447     return !element->isDisabledFormControl();
    448 }
    449 
    450 PopupMenuStyle RenderMenuList::itemStyle(unsigned listIndex) const
    451 {
    452     const Vector<HTMLElement*>& listItems = selectElement()->listItems();
    453     if (listIndex >= listItems.size()) {
    454         // If we are making an out of bounds access, then we want to use the style
    455         // of a different option element (index 0). However, if there isn't an option element
    456         // before at index 0, we fall back to the menu's style.
    457         if (!listIndex)
    458             return menuStyle();
    459 
    460         // Try to retrieve the style of an option element we know exists (index 0).
    461         listIndex = 0;
    462     }
    463     HTMLElement* element = listItems[listIndex];
    464 
    465     Color itemBackgroundColor;
    466     bool itemHasCustomBackgroundColor;
    467     getItemBackgroundColor(listIndex, itemBackgroundColor, itemHasCustomBackgroundColor);
    468 
    469     RenderStyle* style = element->renderStyle() ? element->renderStyle() : element->computedStyle();
    470     return style ? PopupMenuStyle(resolveColor(style, CSSPropertyColor), itemBackgroundColor, style->font(), style->visibility() == VISIBLE,
    471         style->display() == NONE, style->textIndent(), style->direction(), isOverride(style->unicodeBidi()),
    472         itemHasCustomBackgroundColor ? PopupMenuStyle::CustomBackgroundColor : PopupMenuStyle::DefaultBackgroundColor) : menuStyle();
    473 }
    474 
    475 void RenderMenuList::getItemBackgroundColor(unsigned listIndex, Color& itemBackgroundColor, bool& itemHasCustomBackgroundColor) const
    476 {
    477     const Vector<HTMLElement*>& listItems = selectElement()->listItems();
    478     if (listIndex >= listItems.size()) {
    479         itemBackgroundColor = resolveColor(CSSPropertyBackgroundColor);
    480         itemHasCustomBackgroundColor = false;
    481         return;
    482     }
    483     HTMLElement* element = listItems[listIndex];
    484 
    485     Color backgroundColor;
    486     if (element->renderStyle())
    487         backgroundColor = resolveColor(element->renderStyle(), CSSPropertyBackgroundColor);
    488     itemHasCustomBackgroundColor = backgroundColor.isValid() && backgroundColor.alpha();
    489     // If the item has an opaque background color, return that.
    490     if (!backgroundColor.hasAlpha()) {
    491         itemBackgroundColor = backgroundColor;
    492         return;
    493     }
    494 
    495     // Otherwise, the item's background is overlayed on top of the menu background.
    496     backgroundColor = resolveColor(CSSPropertyBackgroundColor).blend(backgroundColor);
    497     if (!backgroundColor.hasAlpha()) {
    498         itemBackgroundColor = backgroundColor;
    499         return;
    500     }
    501 
    502     // If the menu background is not opaque, then add an opaque white background behind.
    503     itemBackgroundColor = Color(Color::white).blend(backgroundColor);
    504 }
    505 
    506 PopupMenuStyle RenderMenuList::menuStyle() const
    507 {
    508     const RenderObject* o = m_innerBlock ? m_innerBlock : this;
    509     const RenderStyle* s = o->style();
    510     return PopupMenuStyle(o->resolveColor(CSSPropertyColor), o->resolveColor(CSSPropertyBackgroundColor), s->font(), s->visibility() == VISIBLE,
    511         s->display() == NONE, s->textIndent(), style()->direction(), isOverride(style()->unicodeBidi()));
    512 }
    513 
    514 HostWindow* RenderMenuList::hostWindow() const
    515 {
    516     return document().view()->hostWindow();
    517 }
    518 
    519 PassRefPtr<Scrollbar> RenderMenuList::createScrollbar(ScrollableArea* scrollableArea, ScrollbarOrientation orientation, ScrollbarControlSize controlSize)
    520 {
    521     RefPtr<Scrollbar> widget;
    522     bool hasCustomScrollbarStyle = style()->hasPseudoStyle(SCROLLBAR);
    523     if (hasCustomScrollbarStyle)
    524         widget = RenderScrollbar::createCustomScrollbar(scrollableArea, orientation, this->node());
    525     else
    526         widget = Scrollbar::create(scrollableArea, orientation, controlSize);
    527     return widget.release();
    528 }
    529 
    530 int RenderMenuList::clientInsetLeft() const
    531 {
    532     return 0;
    533 }
    534 
    535 int RenderMenuList::clientInsetRight() const
    536 {
    537     return 0;
    538 }
    539 
    540 LayoutUnit RenderMenuList::clientPaddingLeft() const
    541 {
    542     return paddingLeft() + m_innerBlock->paddingLeft();
    543 }
    544 
    545 const int endOfLinePadding = 2;
    546 LayoutUnit RenderMenuList::clientPaddingRight() const
    547 {
    548     if (style()->appearance() == MenulistPart || style()->appearance() == MenulistButtonPart) {
    549         // For these appearance values, the theme applies padding to leave room for the
    550         // drop-down button. But leaving room for the button inside the popup menu itself
    551         // looks strange, so we return a small default padding to avoid having a large empty
    552         // space appear on the side of the popup menu.
    553         return endOfLinePadding;
    554     }
    555 
    556     // If the appearance isn't MenulistPart, then the select is styled (non-native), so
    557     // we want to return the user specified padding.
    558     return paddingRight() + m_innerBlock->paddingRight();
    559 }
    560 
    561 int RenderMenuList::listSize() const
    562 {
    563     return selectElement()->listItems().size();
    564 }
    565 
    566 int RenderMenuList::selectedIndex() const
    567 {
    568     HTMLSelectElement* select = selectElement();
    569     return select->optionToListIndex(select->selectedIndex());
    570 }
    571 
    572 void RenderMenuList::popupDidHide()
    573 {
    574     m_popupIsVisible = false;
    575 }
    576 
    577 bool RenderMenuList::itemIsSeparator(unsigned listIndex) const
    578 {
    579     const Vector<HTMLElement*>& listItems = selectElement()->listItems();
    580     return listIndex < listItems.size() && listItems[listIndex]->hasTagName(hrTag);
    581 }
    582 
    583 bool RenderMenuList::itemIsLabel(unsigned listIndex) const
    584 {
    585     const Vector<HTMLElement*>& listItems = selectElement()->listItems();
    586     return listIndex < listItems.size() && isHTMLOptGroupElement(listItems[listIndex]);
    587 }
    588 
    589 bool RenderMenuList::itemIsSelected(unsigned listIndex) const
    590 {
    591     const Vector<HTMLElement*>& listItems = selectElement()->listItems();
    592     if (listIndex >= listItems.size())
    593         return false;
    594     HTMLElement* element = listItems[listIndex];
    595     return element->hasTagName(optionTag) && toHTMLOptionElement(element)->selected();
    596 }
    597 
    598 void RenderMenuList::setTextFromItem(unsigned listIndex)
    599 {
    600     setTextFromOption(selectElement()->listToOptionIndex(listIndex));
    601 }
    602 
    603 FontSelector* RenderMenuList::fontSelector() const
    604 {
    605     return document().styleEngine()->fontSelector();
    606 }
    607 
    608 }
    609