void RenderMenuList::updateOptionsWidth()
{
float maxOptionWidth = 0;
const Vector<Element*>& listItems = toSelectElement(static_cast<Element*>(node()))->listItems();
int size = listItems.size();
FontCachePurgePreventer fontCachePurgePreventer;
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()) {
// Add in the option's text indent. We can't calculate percentage values for now.
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 SelectElement::typeAheadFind(SelectElementData& data, Element* element, KeyboardEvent* event)
{
if (event->timeStamp() < data.lastCharTime())
return;
DOMTimeStamp delta = event->timeStamp() - data.lastCharTime();
data.setLastCharTime(event->timeStamp());
UChar c = event->charCode();
String prefix;
int searchStartOffset = 1;
if (delta > typeAheadTimeout) {
prefix = String(&c, 1);
data.setTypedString(prefix);
data.setRepeatingChar(c);
} else {
data.typedString().append(c);
if (c == data.repeatingChar())
// The user is likely trying to cycle through all the items starting with this character, so just search on the character
prefix = String(&c, 1);
else {
data.setRepeatingChar(0);
prefix = data.typedString();
searchStartOffset = 0;
}
}
const Vector<Element*>& items = data.listItems(element);
int itemCount = items.size();
if (itemCount < 1)
return;
int selected = selectedIndex(data, element);
int index = (optionToListIndex(data, element, selected >= 0 ? selected : 0) + searchStartOffset) % itemCount;
ASSERT(index >= 0);
for (int i = 0; i < itemCount; ++i, index = (index + 1) % itemCount) {
OptionElement* optionElement = toOptionElement(items[index]);
if (!optionElement || items[index]->disabled())
continue;
String text = optionElement->textIndentedToRespectGroupLabel();
if (stripLeadingWhiteSpace(text).startsWith(prefix, false)) {
setSelectedIndex(data, element, listToOptionIndex(data, element, index));
if (!data.usesMenuList())
listBoxOnChange(data, element);
element->setNeedsStyleRecalc();
return;
}
}
}
void RenderListBox::paintItemForeground(PaintInfo& paintInfo, int tx, int ty, int listIndex)
{
SelectElement* select = toSelectElement(static_cast<Element*>(node()));
const Vector<Element*>& listItems = select->listItems();
Element* element = listItems[listIndex];
OptionElement* optionElement = toOptionElement(element);
String itemText;
if (optionElement)
itemText = optionElement->textIndentedToRespectGroupLabel();
else if (OptionGroupElement* optionGroupElement = toOptionGroupElement(element))
itemText = optionGroupElement->groupLabelText();
// Determine where the item text should be placed
IntRect r = itemBoundingBoxRect(tx, ty, listIndex);
r.move(optionsSpacingHorizontal, style()->font().ascent());
RenderStyle* itemStyle = element->renderStyle();
if (!itemStyle)
itemStyle = style();
Color textColor = element->renderStyle() ? element->renderStyle()->color() : style()->color();
if (optionElement && optionElement->selected()) {
if (document()->frame()->selection()->isFocusedAndActive() && document()->focusedNode() == node())
textColor = theme()->activeListBoxSelectionForegroundColor();
// Honor the foreground color for disabled items
else if (!element->disabled())
textColor = theme()->inactiveListBoxSelectionForegroundColor();
}
ColorSpace colorSpace = itemStyle->colorSpace();
paintInfo.context->setFillColor(textColor, colorSpace);
Font itemFont = style()->font();
if (isOptionGroupElement(element)) {
FontDescription d = itemFont.fontDescription();
d.setWeight(d.bolderWeight());
itemFont = Font(d, itemFont.letterSpacing(), itemFont.wordSpacing());
itemFont.update(document()->styleSelector()->fontSelector());
}
unsigned length = itemText.length();
const UChar* string = itemText.characters();
TextRun textRun(string, length, 0, 0, 0, itemStyle->direction() == RTL, itemStyle->unicodeBidi() == Override, false, false);
// Draw the item text
if (itemStyle->visibility() != HIDDEN)
paintInfo.context->drawBidiText(itemFont, textRun, r.location());
}