RenderMenuList.cpp [plain text]
#include "config.h"
#include "RenderMenuList.h"
#include "AXObjectCache.h"
#include "AccessibilityMenuList.h"
#include "CSSFontSelector.h"
#include "Chrome.h"
#include "FontCache.h"
#include "Frame.h"
#include "FrameView.h"
#include "HTMLNames.h"
#include "HTMLOptionElement.h"
#include "HTMLOptGroupElement.h"
#include "HTMLSelectElement.h"
#include "NodeRenderStyle.h"
#include "Page.h"
#include "PopupMenu.h"
#include "RenderBR.h"
#include "RenderScrollbar.h"
#include "RenderTheme.h"
#include "Settings.h"
#include "StyleResolver.h"
#include "TextRun.h"
#include <math.h>
#if PLATFORM(IOS)
#include "HTMLOptionElement.h"
#include "LocalizedStrings.h"
#endif
using namespace std;
namespace WebCore {
using namespace HTMLNames;
#if PLATFORM(IOS)
static size_t selectedOptionCount(RenderMenuList *renderMenuList)
{
HTMLSelectElement* select = toHTMLSelectElement(renderMenuList->node());
const Vector<HTMLElement*>& listItems = select->listItems();
size_t itemCount = listItems.size();
size_t count = 0;
for (size_t i = 0; i < itemCount; ++i) {
if (listItems[i]->hasTagName(optionTag) && static_cast<HTMLOptionElement*>(listItems[i])->selected())
count++;
}
return count;
}
#endif // PLATFORM(IOS)
RenderMenuList::RenderMenuList(Element* element)
: RenderFlexibleBox(element)
, m_buttonText(0)
, m_innerBlock(0)
, m_needsOptionsWidthUpdate(true)
, m_optionsWidth(0)
, m_lastActiveIndex(-1)
#if !PLATFORM(IOS)
, m_popup(0)
, m_popupIsVisible(false)
#endif
{
ASSERT(element);
ASSERT(element->isHTMLElement());
ASSERT(element->hasTagName(HTMLNames::selectTag));
}
RenderMenuList::~RenderMenuList()
{
#if !PLATFORM(IOS)
if (m_popup)
m_popup->disconnectClient();
m_popup = 0;
#endif
}
bool RenderMenuList::canBeReplacedWithInlineRunIn() const
{
return false;
}
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->setFlexGrow(1);
innerStyle->setFlexShrink(1);
innerStyle->setMinWidth(Length(0, Fixed));
if (style()->alignItems() == AlignCenter) {
innerStyle->setMarginTop(Length());
innerStyle->setMarginBottom(Length());
innerStyle->setAlignSelf(AlignFlexStart);
}
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);
#if PLATFORM(IOS)
} else if (document()->page()->chrome().selectItemAlignmentFollowsMenuWritingDirection()) {
innerStyle->setTextAlign(style()->direction() == LTR ? LEFT : RIGHT);
TextDirection direction;
EUnicodeBidi unicodeBidi;
if (multiple() && selectedOptionCount(this) != 1) {
direction = (m_buttonText && m_buttonText->text()->defaultWritingDirection() == WTF::Unicode::RightToLeft) ? RTL : LTR;
unicodeBidi = UBNormal;
} else
if (m_optionStyle) {
direction = m_optionStyle->direction();
unicodeBidi = m_optionStyle->unicodeBidi();
} else {
direction = style()->direction();
unicodeBidi = style()->unicodeBidi();
}
innerStyle->setDirection(direction);
innerStyle->setUnicodeBidi(unicodeBidi);
}
#else
} 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());
}
#endif // !PLATFORM(IOS)
}
inline HTMLSelectElement* RenderMenuList::selectElement() const
{
return toHTMLSelectElement(node());
}
void RenderMenuList::addChild(RenderObject* newChild, RenderObject* beforeChild)
{
createInnerBlock();
m_innerBlock->addChild(newChild, beforeChild);
ASSERT(m_innerBlock == firstChild());
if (AXObjectCache* cache = document()->existingAXObjectCache())
cache->childrenChanged(this);
}
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();
m_needsOptionsWidthUpdate = false;
}
}
void RenderMenuList::updateOptionsWidth()
{
float maxOptionWidth = 0;
const Vector<HTMLElement*>& listItems = selectElement()->listItems();
int size = listItems.size();
FontCachePurgePreventer fontCachePurgePreventer;
for (int i = 0; i < size; ++i) {
HTMLElement* element = listItems[i];
if (!element->hasTagName(optionTag))
continue;
String text = toHTMLOptionElement(element)->textIndentedToRespectGroupLabel();
applyTextTransform(style(), text, ' ');
if (theme()->popupOptionSupportsTextIndent()) {
float optionWidth = 0;
if (RenderStyle* optionStyle = element->renderStyle())
optionWidth += minimumValueForLength(optionStyle->textIndent(), 0, view());
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_needsOptionsWidthUpdate) {
updateOptionsWidth();
m_needsOptionsWidthUpdate = false;
}
#if !PLATFORM(IOS)
if (m_popupIsVisible)
m_popup->updateFromElement();
else
#endif
setTextFromOption(selectElement()->selectedIndex());
}
void RenderMenuList::setTextFromOption(int optionIndex)
{
HTMLSelectElement* select = selectElement();
const Vector<HTMLElement*>& listItems = select->listItems();
int size = listItems.size();
int i = select->optionToListIndex(optionIndex);
String text = emptyString();
if (i >= 0 && i < size) {
Element* element = listItems[i];
if (element->hasTagName(optionTag)) {
text = toHTMLOptionElement(element)->textIndentedToRespectGroupLabel();
m_optionStyle = element->renderStyle();
}
}
#if PLATFORM(IOS)
if (multiple()) {
size_t count = selectedOptionCount(this);
if (count != 1)
text = htmlSelectMultipleItems(count);
}
#endif
setText(text.stripWhiteSpace());
didUpdateActiveOption(optionIndex);
}
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(), true);
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;
}
LayoutRect RenderMenuList::controlClipRect(const LayoutPoint& additionalOffset) const
{
LayoutRect outerBox(additionalOffset.x() + borderLeft() + paddingLeft(),
additionalOffset.y() + borderTop() + paddingTop(),
contentWidth(),
contentHeight());
LayoutRect innerBox(additionalOffset.x() + m_innerBlock->x() + m_innerBlock->paddingLeft(),
additionalOffset.y() + m_innerBlock->y() + m_innerBlock->paddingTop(),
m_innerBlock->contentWidth(),
m_innerBlock->contentHeight());
return intersection(outerBox, innerBox);
}
void RenderMenuList::computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const
{
maxLogicalWidth = max(m_optionsWidth, theme()->minimumMenuListSize(style())) + m_innerBlock->paddingLeft() + m_innerBlock->paddingRight();
if (!style()->width().isPercent())
minLogicalWidth = maxLogicalWidth;
}
void RenderMenuList::computePreferredLogicalWidths()
{
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);
}
#if PLATFORM(IOS)
NO_RETURN_DUE_TO_ASSERT
void RenderMenuList::showPopup()
{
ASSERT_NOT_REACHED();
}
#else
void RenderMenuList::showPopup()
{
if (m_popupIsVisible)
return;
if (document()->page()->chrome().hasOpenedPopup())
return;
createInnerBlock();
if (!m_popup)
m_popup = document()->page()->chrome().createPopupMenu(this);
m_popupIsVisible = true;
FloatPoint absTopLeft = localToAbsolute(FloatPoint(), UseTransforms);
IntRect absBounds = absoluteBoundingBoxRectIgnoringTransforms();
absBounds.setLocation(roundedIntPoint(absTopLeft));
HTMLSelectElement* select = selectElement();
m_popup->show(absBounds, document()->view(), select->optionToListIndex(select->selectedIndex()));
}
#endif
void RenderMenuList::hidePopup()
{
#if !PLATFORM(IOS)
if (m_popup)
m_popup->hide();
#endif
}
void RenderMenuList::valueChanged(unsigned listIndex, bool fireOnChange)
{
Document* doc = toElement(node())->document();
if (!doc || doc != doc->frame()->document())
return;
HTMLSelectElement* select = selectElement();
select->optionSelectedByUser(select->listToOptionIndex(listIndex), fireOnChange);
}
void RenderMenuList::listBoxSelectItem(int listIndex, bool allowMultiplySelections, bool shift, bool fireOnChangeNow)
{
selectElement()->listBoxSelectItem(listIndex, allowMultiplySelections, shift, fireOnChangeNow);
}
bool RenderMenuList::multiple() const
{
return selectElement()->multiple();
}
void RenderMenuList::didSetSelectedIndex(int listIndex)
{
didUpdateActiveOption(selectElement()->listToOptionIndex(listIndex));
}
void RenderMenuList::didUpdateActiveOption(int optionIndex)
{
if (!AXObjectCache::accessibilityEnabled() || !document()->existingAXObjectCache())
return;
if (m_lastActiveIndex == optionIndex)
return;
m_lastActiveIndex = optionIndex;
HTMLSelectElement* select = selectElement();
int listIndex = select->optionToListIndex(optionIndex);
if (listIndex < 0 || listIndex >= static_cast<int>(select->listItems().size()))
return;
ASSERT(select->listItems()[listIndex]);
if (AccessibilityMenuList* menuList = static_cast<AccessibilityMenuList*>(document()->axObjectCache()->get(this)))
menuList->didUpdateActiveOption(optionIndex);
}
String RenderMenuList::itemText(unsigned listIndex) const
{
HTMLSelectElement* select = selectElement();
const Vector<HTMLElement*>& listItems = select->listItems();
if (listIndex >= listItems.size())
return String();
String itemString;
Element* element = listItems[listIndex];
if (element->hasTagName(optgroupTag))
itemString = static_cast<const HTMLOptGroupElement*>(element)->groupLabelText();
else if (element->hasTagName(optionTag))
itemString = toHTMLOptionElement(element)->textIndentedToRespectGroupLabel();
applyTextTransform(style(), itemString, ' ');
return itemString;
}
String RenderMenuList::itemLabel(unsigned) const
{
return String();
}
String RenderMenuList::itemIcon(unsigned) const
{
return String();
}
String RenderMenuList::itemAccessibilityText(unsigned listIndex) const
{
const Vector<HTMLElement*>& listItems = selectElement()->listItems();
if (listIndex >= listItems.size())
return String();
return listItems[listIndex]->fastGetAttribute(aria_labelAttr);
}
String RenderMenuList::itemToolTip(unsigned listIndex) const
{
const Vector<HTMLElement*>& listItems = selectElement()->listItems();
if (listIndex >= listItems.size())
return String();
return listItems[listIndex]->title();
}
bool RenderMenuList::itemIsEnabled(unsigned listIndex) const
{
const Vector<HTMLElement*>& listItems = selectElement()->listItems();
if (listIndex >= listItems.size())
return false;
HTMLElement* element = listItems[listIndex];
if (!element->hasTagName(optionTag))
return false;
bool groupEnabled = true;
if (Element* parentElement = element->parentElement()) {
if (parentElement->hasTagName(optgroupTag))
groupEnabled = !parentElement->isDisabledFormControl();
}
if (!groupEnabled)
return false;
return !element->isDisabledFormControl();
}
PopupMenuStyle RenderMenuList::itemStyle(unsigned listIndex) const
{
const Vector<HTMLElement*>& listItems = selectElement()->listItems();
if (listIndex >= listItems.size()) {
if (!listIndex)
return menuStyle();
listIndex = 0;
}
HTMLElement* element = listItems[listIndex];
Color itemBackgroundColor;
bool itemHasCustomBackgroundColor;
getItemBackgroundColor(listIndex, itemBackgroundColor, itemHasCustomBackgroundColor);
RenderStyle* style = element->renderStyle() ? element->renderStyle() : element->computedStyle();
return style ? PopupMenuStyle(style->visitedDependentColor(CSSPropertyColor), itemBackgroundColor, style->font(), style->visibility() == VISIBLE,
style->display() == NONE, style->textIndent(), style->direction(), isOverride(style->unicodeBidi()),
itemHasCustomBackgroundColor ? PopupMenuStyle::CustomBackgroundColor : PopupMenuStyle::DefaultBackgroundColor) : menuStyle();
}
void RenderMenuList::getItemBackgroundColor(unsigned listIndex, Color& itemBackgroundColor, bool& itemHasCustomBackgroundColor) const
{
const Vector<HTMLElement*>& listItems = selectElement()->listItems();
if (listIndex >= listItems.size()) {
itemBackgroundColor = style()->visitedDependentColor(CSSPropertyBackgroundColor);
itemHasCustomBackgroundColor = false;
return;
}
HTMLElement* element = listItems[listIndex];
Color backgroundColor;
if (element->renderStyle())
backgroundColor = element->renderStyle()->visitedDependentColor(CSSPropertyBackgroundColor);
itemHasCustomBackgroundColor = backgroundColor.isValid() && backgroundColor.alpha();
if (!backgroundColor.hasAlpha()) {
itemBackgroundColor = backgroundColor;
return;
}
backgroundColor = style()->visitedDependentColor(CSSPropertyBackgroundColor).blend(backgroundColor);
if (!backgroundColor.hasAlpha()) {
itemBackgroundColor = backgroundColor;
return;
}
itemBackgroundColor = 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(), isOverride(style()->unicodeBidi()));
}
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->node());
else
widget = Scrollbar::createNativeScrollbar(scrollableArea, orientation, controlSize);
return widget.release();
}
int RenderMenuList::clientInsetLeft() const
{
return 0;
}
int RenderMenuList::clientInsetRight() const
{
return 0;
}
LayoutUnit RenderMenuList::clientPaddingLeft() const
{
return paddingLeft() + m_innerBlock->paddingLeft();
}
const int endOfLinePadding = 2;
LayoutUnit RenderMenuList::clientPaddingRight() const
{
if (style()->appearance() == MenulistPart || style()->appearance() == MenulistButtonPart) {
return endOfLinePadding;
}
return paddingRight() + m_innerBlock->paddingRight();
}
int RenderMenuList::listSize() const
{
return selectElement()->listItems().size();
}
int RenderMenuList::selectedIndex() const
{
HTMLSelectElement* select = selectElement();
return select->optionToListIndex(select->selectedIndex());
}
void RenderMenuList::popupDidHide()
{
#if !PLATFORM(IOS)
m_popupIsVisible = false;
#endif
}
bool RenderMenuList::itemIsSeparator(unsigned listIndex) const
{
const Vector<HTMLElement*>& listItems = selectElement()->listItems();
return listIndex < listItems.size() && listItems[listIndex]->hasTagName(hrTag);
}
bool RenderMenuList::itemIsLabel(unsigned listIndex) const
{
const Vector<HTMLElement*>& listItems = selectElement()->listItems();
return listIndex < listItems.size() && listItems[listIndex]->hasTagName(optgroupTag);
}
bool RenderMenuList::itemIsSelected(unsigned listIndex) const
{
const Vector<HTMLElement*>& listItems = selectElement()->listItems();
if (listIndex >= listItems.size())
return false;
HTMLElement* element = listItems[listIndex];
return element->hasTagName(optionTag) && toHTMLOptionElement(element)->selected();
}
void RenderMenuList::setTextFromItem(unsigned listIndex)
{
setTextFromOption(selectElement()->listToOptionIndex(listIndex));
}
FontSelector* RenderMenuList::fontSelector() const
{
return document()->ensureStyleResolver()->fontSelector();
}
}