RenderMenuList.cpp [plain text]
#include "config.h"
#include "RenderMenuList.h"
#include "AXObjectCache.h"
#include "AccessibilityMenuList.h"
#include "CSSFontSelector.h"
#include "Chrome.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 "RenderScrollbar.h"
#include "RenderText.h"
#include "RenderTheme.h"
#include "RenderView.h"
#include "Settings.h"
#include "StyleResolver.h"
#include "TextRun.h"
#include <math.h>
#if PLATFORM(IOS)
#include "LocalizedStrings.h"
#endif
namespace WebCore {
using namespace HTMLNames;
#if PLATFORM(IOS)
static size_t selectedOptionCount(const RenderMenuList& renderMenuList)
{
const Vector<HTMLElement*>& listItems = renderMenuList.selectElement().listItems();
size_t numberOfItems = listItems.size();
size_t count = 0;
for (size_t i = 0; i < numberOfItems; ++i) {
if (is<HTMLOptionElement>(*listItems[i]) && downcast<HTMLOptionElement>(*listItems[i]).selected())
++count;
}
return count;
}
#endif
RenderMenuList::RenderMenuList(HTMLSelectElement& element, Ref<RenderStyle>&& style)
: RenderFlexibleBox(element, WTF::move(style))
, m_buttonText(nullptr)
, m_innerBlock(nullptr)
, m_needsOptionsWidthUpdate(true)
, m_optionsWidth(0)
, m_lastActiveIndex(-1)
#if !PLATFORM(IOS)
, m_popupIsVisible(false)
#endif
{
}
RenderMenuList::~RenderMenuList()
{
#if !PLATFORM(IOS)
if (m_popup)
m_popup->disconnectClient();
m_popup = nullptr;
#endif
}
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().alignItemsPosition() == ItemPositionCenter) {
innerStyle.setMarginTop(Length());
innerStyle.setMarginBottom(Length());
innerStyle.setAlignSelfPosition(ItemPositionFlexStart);
}
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() == U_RIGHT_TO_LEFT) ? 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() == U_RIGHT_TO_LEFT) ? 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)
}
HTMLSelectElement& RenderMenuList::selectElement() const
{
return downcast<HTMLSelectElement>(nodeForNonAnonymous());
}
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, newChild);
}
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_innerBlock) adjustInnerStyle();
bool fontChanged = !oldStyle || oldStyle->fontCascade() != style().fontCascade();
if (fontChanged) {
updateOptionsWidth();
m_needsOptionsWidthUpdate = false;
}
}
void RenderMenuList::updateOptionsWidth()
{
float maxOptionWidth = 0;
const Vector<HTMLElement*>& listItems = selectElement().listItems();
int size = listItems.size();
for (int i = 0; i < size; ++i) {
HTMLElement* element = listItems[i];
if (!is<HTMLOptionElement>(*element))
continue;
String text = downcast<HTMLOptionElement>(*element).textIndentedToRespectGroupLabel();
applyTextTransform(style(), text, ' ');
if (theme().popupOptionSupportsTextIndent()) {
float optionWidth = 0;
if (RenderStyle* optionStyle = element->computedStyle())
optionWidth += minimumValueForLength(optionStyle->textIndent(), 0);
if (!text.isEmpty()) {
const FontCascade& font = style().fontCascade();
TextRun run = RenderBlock::constructTextRun(this, font, text, style(), AllowTrailingExpansion | ForbidLeadingExpansion, DefaultTextRunFlags);
optionWidth += font.width(run);
}
maxOptionWidth = std::max(maxOptionWidth, optionWidth);
} else if (!text.isEmpty()) {
const FontCascade& font = style().fontCascade();
TextRun run = RenderBlock::constructTextRun(this, font, text, style(), AllowTrailingExpansion | ForbidLeadingExpansion, DefaultTextRunFlags);
maxOptionWidth = std::max(maxOptionWidth, font.width(run));
}
}
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)
{
const Vector<HTMLElement*>& listItems = selectElement().listItems();
int size = listItems.size();
int i = selectElement().optionToListIndex(optionIndex);
String text = emptyString();
if (i >= 0 && i < size) {
Element* element = listItems[i];
if (is<HTMLOptionElement>(*element)) {
text = downcast<HTMLOptionElement>(*element).textIndentedToRespectGroupLabel();
m_optionStyle = element->computedStyle();
}
}
#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)
{
String textToUse = s.isEmpty() ? String(ASCIILiteral("\n")) : s;
if (m_buttonText)
m_buttonText->setText(textToUse.impl(), true);
else {
m_buttonText = new RenderText(document(), textToUse);
addChild(m_buttonText);
}
adjustInnerStyle();
}
String RenderMenuList::text() const
{
return m_buttonText ? m_buttonText->text() : String();
}
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 = std::max(m_optionsWidth, theme().minimumMenuListSize(style())) + m_innerBlock->paddingLeft() + m_innerBlock->paddingRight();
if (!style().width().isPercentOrCalculated())
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 = std::max(m_maxPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(style().minWidth().value()));
m_minPreferredLogicalWidth = std::max(m_minPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(style().minWidth().value()));
}
if (style().maxWidth().isFixed()) {
m_maxPreferredLogicalWidth = std::min(m_maxPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(style().maxWidth().value()));
m_minPreferredLogicalWidth = std::min(m_minPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(style().maxWidth().value()));
}
LayoutUnit toAdd = horizontalBorderAndPaddingExtent();
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));
m_popup->show(absBounds, &view().frameView(), selectElement().optionToListIndex(selectElement().selectedIndex()));
}
#endif
void RenderMenuList::hidePopup()
{
#if !PLATFORM(IOS)
if (m_popup)
m_popup->hide();
#endif
}
void RenderMenuList::valueChanged(unsigned listIndex, bool fireOnChange)
{
if (&document() != document().frame()->document())
return;
selectElement().optionSelectedByUser(selectElement().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;
int listIndex = selectElement().optionToListIndex(optionIndex);
if (listIndex < 0 || listIndex >= static_cast<int>(selectElement().listItems().size()))
return;
if (AXObjectCache* cache = document().existingAXObjectCache()) {
if (AccessibilityMenuList* menuList = downcast<AccessibilityMenuList>(cache->get(this)))
menuList->didUpdateActiveOption(optionIndex);
}
}
String RenderMenuList::itemText(unsigned listIndex) const
{
const Vector<HTMLElement*>& listItems = selectElement().listItems();
if (listIndex >= listItems.size())
return String();
String itemString;
Element* element = listItems[listIndex];
if (is<HTMLOptGroupElement>(*element))
itemString = downcast<HTMLOptGroupElement>(*element).groupLabelText();
else if (is<HTMLOptionElement>(*element))
itemString = downcast<HTMLOptionElement>(*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 (!is<HTMLOptionElement>(*element))
return false;
bool groupEnabled = true;
if (Element* parentElement = element->parentElement()) {
if (is<HTMLOptGroupElement>(*parentElement))
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->computedStyle();
return PopupMenuStyle(style.visitedDependentColor(CSSPropertyColor), itemBackgroundColor, style.fontCascade(), style.visibility() == VISIBLE,
style.display() == NONE, true, style.textIndent(), style.direction(), isOverride(style.unicodeBidi()),
itemHasCustomBackgroundColor ? PopupMenuStyle::CustomBackgroundColor : PopupMenuStyle::DefaultBackgroundColor);
}
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 = element->computedStyle()->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
{
const RenderStyle& styleToUse = m_innerBlock ? m_innerBlock->style() : style();
IntRect absBounds = absoluteBoundingBoxRectIgnoringTransforms();
return PopupMenuStyle(styleToUse.visitedDependentColor(CSSPropertyColor), styleToUse.visitedDependentColor(CSSPropertyBackgroundColor),
styleToUse.fontCascade(), styleToUse.visibility() == VISIBLE, styleToUse.display() == NONE,
style().hasAppearance() && style().appearance() == MenulistPart, styleToUse.textIndent(),
style().direction(), isOverride(style().unicodeBidi()), PopupMenuStyle::DefaultBackgroundColor,
PopupMenuStyle::SelectPopup, theme().popupMenuSize(styleToUse, absBounds));
}
HostWindow* RenderMenuList::hostWindow() const
{
return view().frameView().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, &selectElement());
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
{
return selectElement().optionToListIndex(selectElement().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() && is<HTMLOptGroupElement>(*listItems[listIndex]);
}
bool RenderMenuList::itemIsSelected(unsigned listIndex) const
{
const Vector<HTMLElement*>& listItems = selectElement().listItems();
if (listIndex >= listItems.size())
return false;
HTMLElement* element = listItems[listIndex];
return is<HTMLOptionElement>(*element) && downcast<HTMLOptionElement>(*element).selected();
}
void RenderMenuList::setTextFromItem(unsigned listIndex)
{
setTextFromOption(selectElement().listToOptionIndex(listIndex));
}
FontSelector* RenderMenuList::fontSelector() const
{
return &document().fontSelector();
}
}