RenderMenuList.cpp [plain text]
#include "config.h"
#include "RenderMenuList.h"
#include "AXObjectCache.h"
#include "CSSFontSelector.h"
#include "CSSStyleSelector.h"
#include "Chrome.h"
#include "Frame.h"
#include "FrameView.h"
#include "HTMLNames.h"
#include "NodeRenderStyle.h"
#include "OptionElement.h"
#include "OptionGroupElement.h"
#include "Page.h"
#include "PopupMenu.h"
#include "RenderBR.h"
#include "RenderScrollbar.h"
#include "RenderTheme.h"
#include "SelectElement.h"
#include "TextRun.h"
#include <math.h>
using namespace std;
namespace WebCore {
using namespace HTMLNames;
RenderMenuList::RenderMenuList(Element* element)
: RenderFlexibleBox(element)
, m_buttonText(0)
, m_innerBlock(0)
, m_optionsChanged(true)
, m_optionsWidth(0)
, m_lastSelectedIndex(-1)
, m_popupIsVisible(false)
{
}
RenderMenuList::~RenderMenuList()
{
if (m_popup)
m_popup->disconnectClient();
m_popup = 0;
}
void RenderMenuList::createInnerBlock()
{
if (m_innerBlock) {
ASSERT(firstChild() == m_innerBlock);
ASSERT(!m_innerBlock->nextSibling());
return;
}
ASSERT(!firstChild());
m_innerBlock = createAnonymousBlock();
adjustInnerStyle();
RenderFlexibleBox::addChild(m_innerBlock);
}
void RenderMenuList::adjustInnerStyle()
{
RenderStyle* innerStyle = m_innerBlock->style();
innerStyle->setBoxFlex(1);
innerStyle->setPaddingLeft(Length(theme()->popupInternalPaddingLeft(style()), Fixed));
innerStyle->setPaddingRight(Length(theme()->popupInternalPaddingRight(style()), Fixed));
innerStyle->setPaddingTop(Length(theme()->popupInternalPaddingTop(style()), Fixed));
innerStyle->setPaddingBottom(Length(theme()->popupInternalPaddingBottom(style()), Fixed));
if (document()->page()->chrome()->selectItemWritingDirectionIsNatural()) {
innerStyle->setTextAlign(LEFT);
TextDirection direction = (m_buttonText && m_buttonText->text()->defaultWritingDirection() == WTF::Unicode::RightToLeft) ? RTL : LTR;
innerStyle->setDirection(direction);
} else if (m_optionStyle && document()->page()->chrome()->selectItemAlignmentFollowsMenuWritingDirection()) {
if ((m_optionStyle->direction() != innerStyle->direction() || m_optionStyle->unicodeBidi() != innerStyle->unicodeBidi()))
m_innerBlock->setNeedsLayoutAndPrefWidthsRecalc();
innerStyle->setTextAlign(style()->isLeftToRightDirection() ? LEFT : RIGHT);
innerStyle->setDirection(m_optionStyle->direction());
innerStyle->setUnicodeBidi(m_optionStyle->unicodeBidi());
}
}
void RenderMenuList::addChild(RenderObject* newChild, RenderObject* beforeChild)
{
createInnerBlock();
m_innerBlock->addChild(newChild, beforeChild);
ASSERT(m_innerBlock == firstChild());
}
void RenderMenuList::removeChild(RenderObject* oldChild)
{
if (oldChild == m_innerBlock || !m_innerBlock) {
RenderFlexibleBox::removeChild(oldChild);
m_innerBlock = 0;
} else
m_innerBlock->removeChild(oldChild);
}
void RenderMenuList::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
RenderBlock::styleDidChange(diff, oldStyle);
if (m_buttonText)
m_buttonText->setStyle(style());
if (m_innerBlock) adjustInnerStyle();
bool fontChanged = !oldStyle || oldStyle->font() != style()->font();
if (fontChanged)
updateOptionsWidth();
}
void RenderMenuList::updateOptionsWidth()
{
float maxOptionWidth = 0;
const Vector<Element*>& listItems = toSelectElement(static_cast<Element*>(node()))->listItems();
int size = listItems.size();
for (int i = 0; i < size; ++i) {
Element* element = listItems[i];
OptionElement* optionElement = toOptionElement(element);
if (!optionElement)
continue;
String text = optionElement->textIndentedToRespectGroupLabel();
if (theme()->popupOptionSupportsTextIndent()) {
float optionWidth = 0;
if (RenderStyle* optionStyle = element->renderStyle())
optionWidth += optionStyle->textIndent().calcMinValue(0);
if (!text.isEmpty())
optionWidth += style()->font().width(text);
maxOptionWidth = max(maxOptionWidth, optionWidth);
} else if (!text.isEmpty())
maxOptionWidth = max(maxOptionWidth, style()->font().width(text));
}
int width = static_cast<int>(ceilf(maxOptionWidth));
if (m_optionsWidth == width)
return;
m_optionsWidth = width;
if (parent())
setNeedsLayoutAndPrefWidthsRecalc();
}
void RenderMenuList::updateFromElement()
{
if (m_optionsChanged) {
updateOptionsWidth();
m_optionsChanged = false;
}
if (m_popupIsVisible)
m_popup->updateFromElement();
else
setTextFromOption(toSelectElement(static_cast<Element*>(node()))->selectedIndex());
}
void RenderMenuList::setTextFromOption(int optionIndex)
{
SelectElement* select = toSelectElement(static_cast<Element*>(node()));
const Vector<Element*>& listItems = select->listItems();
int size = listItems.size();
int i = select->optionToListIndex(optionIndex);
String text = "";
if (i >= 0 && i < size) {
Element* element = listItems[i];
if (OptionElement* optionElement = toOptionElement(element)) {
text = optionElement->textIndentedToRespectGroupLabel();
m_optionStyle = element->renderStyle();
}
}
setText(text.stripWhiteSpace());
}
void RenderMenuList::setText(const String& s)
{
if (s.isEmpty()) {
if (!m_buttonText || !m_buttonText->isBR()) {
if (m_buttonText)
m_buttonText->destroy();
m_buttonText = new (renderArena()) RenderBR(document());
m_buttonText->setStyle(style());
addChild(m_buttonText);
}
} else {
if (m_buttonText && !m_buttonText->isBR())
m_buttonText->setText(s.impl());
else {
if (m_buttonText)
m_buttonText->destroy();
m_buttonText = new (renderArena()) RenderText(document(), s.impl());
m_buttonText->setStyle(style());
addChild(m_buttonText);
}
adjustInnerStyle();
}
}
String RenderMenuList::text() const
{
return m_buttonText ? m_buttonText->text() : 0;
}
IntRect RenderMenuList::controlClipRect(int tx, int ty) const
{
IntRect outerBox(tx + borderLeft() + paddingLeft(),
ty + borderTop() + paddingTop(),
contentWidth(),
contentHeight());
IntRect innerBox(tx + m_innerBlock->x() + m_innerBlock->paddingLeft(),
ty + m_innerBlock->y() + m_innerBlock->paddingTop(),
m_innerBlock->contentWidth(),
m_innerBlock->contentHeight());
return intersection(outerBox, innerBox);
}
void RenderMenuList::computePreferredLogicalWidths()
{
m_minPreferredLogicalWidth = 0;
m_maxPreferredLogicalWidth = 0;
if (style()->width().isFixed() && style()->width().value() > 0)
m_minPreferredLogicalWidth = m_maxPreferredLogicalWidth = computeContentBoxLogicalWidth(style()->width().value());
else
m_maxPreferredLogicalWidth = max(m_optionsWidth, theme()->minimumMenuListSize(style())) + m_innerBlock->paddingLeft() + m_innerBlock->paddingRight();
if (style()->minWidth().isFixed() && style()->minWidth().value() > 0) {
m_maxPreferredLogicalWidth = max(m_maxPreferredLogicalWidth, computeContentBoxLogicalWidth(style()->minWidth().value()));
m_minPreferredLogicalWidth = max(m_minPreferredLogicalWidth, computeContentBoxLogicalWidth(style()->minWidth().value()));
} else if (style()->width().isPercent() || (style()->width().isAuto() && style()->height().isPercent()))
m_minPreferredLogicalWidth = 0;
else
m_minPreferredLogicalWidth = m_maxPreferredLogicalWidth;
if (style()->maxWidth().isFixed() && style()->maxWidth().value() != undefinedLength) {
m_maxPreferredLogicalWidth = min(m_maxPreferredLogicalWidth, computeContentBoxLogicalWidth(style()->maxWidth().value()));
m_minPreferredLogicalWidth = min(m_minPreferredLogicalWidth, computeContentBoxLogicalWidth(style()->maxWidth().value()));
}
int toAdd = borderAndPaddingWidth();
m_minPreferredLogicalWidth += toAdd;
m_maxPreferredLogicalWidth += toAdd;
setPreferredLogicalWidthsDirty(false);
}
void RenderMenuList::showPopup()
{
if (m_popupIsVisible)
return;
createInnerBlock();
if (!m_popup)
m_popup = document()->page()->chrome()->createPopupMenu(this);
SelectElement* select = toSelectElement(static_cast<Element*>(node()));
m_popupIsVisible = true;
FloatPoint absTopLeft = localToAbsolute(FloatPoint(), false, true);
IntRect absBounds = absoluteBoundingBoxRect();
absBounds.setLocation(roundedIntPoint(absTopLeft));
m_popup->show(absBounds, document()->view(),
select->optionToListIndex(select->selectedIndex()));
}
void RenderMenuList::hidePopup()
{
if (m_popup)
m_popup->hide();
}
void RenderMenuList::valueChanged(unsigned listIndex, bool fireOnChange)
{
Document* doc = static_cast<Element*>(node())->document();
if (!doc || doc != doc->frame()->document())
return;
SelectElement* select = toSelectElement(static_cast<Element*>(node()));
select->setSelectedIndexByUser(select->listToOptionIndex(listIndex), true, fireOnChange);
}
#if ENABLE(NO_LISTBOX_RENDERING)
void RenderMenuList::listBoxSelectItem(int listIndex, bool allowMultiplySelections, bool shift, bool fireOnChangeNow)
{
SelectElement* select = toSelectElement(static_cast<Element*>(node()));
select->listBoxSelectItem(listIndex, allowMultiplySelections, shift, fireOnChangeNow);
}
bool RenderMenuList::multiple()
{
SelectElement* select = toSelectElement(static_cast<Element*>(node()));
return select->multiple();
}
#endif
void RenderMenuList::didSetSelectedIndex()
{
int index = selectedIndex();
if (m_lastSelectedIndex == index)
return;
m_lastSelectedIndex = index;
if (AXObjectCache::accessibilityEnabled())
document()->axObjectCache()->postNotification(this, AXObjectCache::AXMenuListValueChanged, true, PostSynchronously);
}
String RenderMenuList::itemText(unsigned listIndex) const
{
SelectElement* select = toSelectElement(static_cast<Element*>(node()));
const Vector<Element*>& listItems = select->listItems();
if (listIndex >= listItems.size())
return String();
Element* element = listItems[listIndex];
if (OptionGroupElement* optionGroupElement = toOptionGroupElement(element))
return optionGroupElement->groupLabelText();
else if (OptionElement* optionElement = toOptionElement(element))
return optionElement->textIndentedToRespectGroupLabel();
return String();
}
String RenderMenuList::itemLabel(unsigned) const
{
return String();
}
String RenderMenuList::itemIcon(unsigned) const
{
return String();
}
String RenderMenuList::itemAccessibilityText(unsigned listIndex) const
{
SelectElement* select = toSelectElement(static_cast<Element*>(node()));
const Vector<Element*>& listItems = select->listItems();
if (listIndex >= listItems.size())
return String();
return listItems[listIndex]->getAttribute(aria_labelAttr);
}
String RenderMenuList::itemToolTip(unsigned listIndex) const
{
SelectElement* select = toSelectElement(static_cast<Element*>(node()));
const Vector<Element*>& listItems = select->listItems();
if (listIndex >= listItems.size())
return String();
Element* element = listItems[listIndex];
return element->title();
}
bool RenderMenuList::itemIsEnabled(unsigned listIndex) const
{
SelectElement* select = toSelectElement(static_cast<Element*>(node()));
const Vector<Element*>& listItems = select->listItems();
if (listIndex >= listItems.size())
return false;
Element* element = listItems[listIndex];
if (!isOptionElement(element))
return false;
bool groupEnabled = true;
if (Element* parentElement = element->parentElement()) {
if (isOptionGroupElement(parentElement))
groupEnabled = parentElement->isEnabledFormControl();
}
if (!groupEnabled)
return false;
return element->isEnabledFormControl();
}
PopupMenuStyle RenderMenuList::itemStyle(unsigned listIndex) const
{
SelectElement* select = toSelectElement(static_cast<Element*>(node()));
const Vector<Element*>& listItems = select->listItems();
if (listIndex >= listItems.size()) {
if (!listIndex)
return menuStyle();
listIndex = 0;
}
Element* element = listItems[listIndex];
RenderStyle* style = element->renderStyle() ? element->renderStyle() : element->computedStyle();
return style ? PopupMenuStyle(style->visitedDependentColor(CSSPropertyColor), itemBackgroundColor(listIndex), style->font(), style->visibility() == VISIBLE, style->display() == NONE, style->textIndent(), style->direction(), style->unicodeBidi() == Override) : menuStyle();
}
Color RenderMenuList::itemBackgroundColor(unsigned listIndex) const
{
SelectElement* select = toSelectElement(static_cast<Element*>(node()));
const Vector<Element*>& listItems = select->listItems();
if (listIndex >= listItems.size())
return style()->visitedDependentColor(CSSPropertyBackgroundColor);
Element* element = listItems[listIndex];
Color backgroundColor;
if (element->renderStyle())
backgroundColor = element->renderStyle()->visitedDependentColor(CSSPropertyBackgroundColor);
if (!backgroundColor.hasAlpha())
return backgroundColor;
backgroundColor = style()->visitedDependentColor(CSSPropertyBackgroundColor).blend(backgroundColor);
if (!backgroundColor.hasAlpha())
return backgroundColor;
return Color(Color::white).blend(backgroundColor);
}
PopupMenuStyle RenderMenuList::menuStyle() const
{
RenderStyle* s = m_innerBlock ? m_innerBlock->style() : style();
return PopupMenuStyle(s->visitedDependentColor(CSSPropertyColor), s->visitedDependentColor(CSSPropertyBackgroundColor), s->font(), s->visibility() == VISIBLE, s->display() == NONE, s->textIndent(), style()->direction(), style()->unicodeBidi() == Override);
}
HostWindow* RenderMenuList::hostWindow() const
{
return document()->view()->hostWindow();
}
PassRefPtr<Scrollbar> RenderMenuList::createScrollbar(ScrollableArea* scrollableArea, ScrollbarOrientation orientation, ScrollbarControlSize controlSize)
{
RefPtr<Scrollbar> widget;
bool hasCustomScrollbarStyle = style()->hasPseudoStyle(SCROLLBAR);
if (hasCustomScrollbarStyle)
widget = RenderScrollbar::createCustomScrollbar(scrollableArea, orientation, this);
else
widget = Scrollbar::createNativeScrollbar(scrollableArea, orientation, controlSize);
return widget.release();
}
int RenderMenuList::clientInsetLeft() const
{
return 0;
}
int RenderMenuList::clientInsetRight() const
{
return 0;
}
int RenderMenuList::clientPaddingLeft() const
{
return paddingLeft() + m_innerBlock->paddingLeft();
}
const int endOfLinePadding = 2;
int RenderMenuList::clientPaddingRight() const
{
if (style()->appearance() == MenulistPart || style()->appearance() == MenulistButtonPart) {
return endOfLinePadding;
}
return paddingRight() + m_innerBlock->paddingRight();
}
int RenderMenuList::listSize() const
{
SelectElement* select = toSelectElement(static_cast<Element*>(node()));
return select->listItems().size();
}
int RenderMenuList::selectedIndex() const
{
SelectElement* select = toSelectElement(static_cast<Element*>(node()));
return select->optionToListIndex(select->selectedIndex());
}
void RenderMenuList::popupDidHide()
{
m_popupIsVisible = false;
}
bool RenderMenuList::itemIsSeparator(unsigned listIndex) const
{
SelectElement* select = toSelectElement(static_cast<Element*>(node()));
const Vector<Element*>& listItems = select->listItems();
if (listIndex >= listItems.size())
return false;
Element* element = listItems[listIndex];
return element->hasTagName(hrTag);
}
bool RenderMenuList::itemIsLabel(unsigned listIndex) const
{
SelectElement* select = toSelectElement(static_cast<Element*>(node()));
const Vector<Element*>& listItems = select->listItems();
if (listIndex >= listItems.size())
return false;
Element* element = listItems[listIndex];
return isOptionGroupElement(element);
}
bool RenderMenuList::itemIsSelected(unsigned listIndex) const
{
SelectElement* select = toSelectElement(static_cast<Element*>(node()));
const Vector<Element*>& listItems = select->listItems();
if (listIndex >= listItems.size())
return false;
Element* element = listItems[listIndex];
if (OptionElement* optionElement = toOptionElement(element))
return optionElement->selected();
return false;
}
void RenderMenuList::setTextFromItem(unsigned listIndex)
{
SelectElement* select = toSelectElement(static_cast<Element*>(node()));
setTextFromOption(select->listToOptionIndex(listIndex));
}
FontSelector* RenderMenuList::fontSelector() const
{
return document()->styleSelector()->fontSelector();
}
}