already_AddRefed<Element>
ListBoxObject::GetItemAtIndex(int32_t index)
{
nsCOMPtr<nsIDOMElement> el;
GetItemAtIndex(index, getter_AddRefs(el));
nsCOMPtr<Element> ret(do_QueryInterface(el));
return ret.forget();
}
nscoord
nsListBoxBodyFrame::ComputeIntrinsicWidth(nsBoxLayoutState& aBoxLayoutState)
{
if (mStringWidth != -1)
return mStringWidth;
nscoord largestWidth = 0;
PRInt32 index = 0;
nsCOMPtr<nsIDOMElement> firstRowEl;
GetItemAtIndex(index, getter_AddRefs(firstRowEl));
nsCOMPtr<nsIContent> firstRowContent(do_QueryInterface(firstRowEl));
if (firstRowContent) {
nsRefPtr<nsStyleContext> styleContext;
nsPresContext *presContext = aBoxLayoutState.PresContext();
styleContext = presContext->StyleSet()->
ResolveStyleFor(firstRowContent->AsElement(), nsnull);
nscoord width = 0;
nsMargin margin(0,0,0,0);
if (styleContext->GetStylePadding()->GetPadding(margin))
width += margin.LeftRight();
width += styleContext->GetStyleBorder()->GetActualBorder().LeftRight();
if (styleContext->GetStyleMargin()->GetMargin(margin))
width += margin.LeftRight();
ChildIterator iter, last;
PRUint32 i = 0;
for (ChildIterator::Init(mContent, &iter, &last);
iter != last && i < 100;
++iter, ++i) {
nsIContent *child = (*iter);
if (child->Tag() == nsGkAtoms::listitem) {
nsRenderingContext* rendContext = aBoxLayoutState.GetRenderingContext();
if (rendContext) {
nsAutoString value;
PRUint32 textCount = child->GetChildCount();
for (PRUint32 j = 0; j < textCount; ++j) {
nsIContent* text = child->GetChildAt(j);
if (text && text->IsNodeOfType(nsINode::eTEXT)) {
text->AppendTextTo(value);
}
}
nsRefPtr<nsFontMetrics> fm;
nsLayoutUtils::GetFontMetricsForStyleContext(styleContext,
getter_AddRefs(fm));
rendContext->SetFont(fm);
nscoord textWidth =
nsLayoutUtils::GetStringWidth(this, rendContext, value.get(), value.Length());
textWidth += width;
if (textWidth > largestWidth)
largestWidth = textWidth;
}
}
}
}
mStringWidth = largestWidth;
return mStringWidth;
}
nscoord
nsListBoxBodyFrame::ComputeIntrinsicWidth(nsBoxLayoutState& aBoxLayoutState)
{
if (mStringWidth != -1)
return mStringWidth;
nscoord largestWidth = 0;
PRInt32 index = 0;
nsCOMPtr<nsIDOMElement> firstRowEl;
GetItemAtIndex(index, getter_AddRefs(firstRowEl));
nsCOMPtr<nsIContent> firstRowContent(do_QueryInterface(firstRowEl));
if (firstRowContent) {
nsRefPtr<nsStyleContext> styleContext;
nsPresContext *presContext = aBoxLayoutState.PresContext();
styleContext = presContext->StyleSet()->
ResolveStyleFor(firstRowContent, nsnull);
nscoord width = 0;
nsMargin margin(0,0,0,0);
if (styleContext->GetStylePadding()->GetPadding(margin))
width += margin.LeftRight();
width += styleContext->GetStyleBorder()->GetBorder().LeftRight();
if (styleContext->GetStyleMargin()->GetMargin(margin))
width += margin.LeftRight();
nsIContent* listbox = mContent->GetBindingParent();
NS_ENSURE_TRUE(listbox, largestWidth);
PRUint32 childCount = listbox->GetChildCount();
for (PRUint32 i = 0; i < childCount && i < 100; ++i) {
nsIContent *child = listbox->GetChildAt(i);
if (child->Tag() == nsGkAtoms::listitem) {
nsIRenderingContext* rendContext = aBoxLayoutState.GetRenderingContext();
if (rendContext) {
nsAutoString value;
PRUint32 textCount = child->GetChildCount();
for (PRUint32 j = 0; j < textCount; ++j) {
nsIContent* text = child->GetChildAt(j);
if (text && text->IsNodeOfType(nsINode::eTEXT)) {
text->AppendTextTo(value);
}
}
nsLayoutUtils::SetFontFromStyle(rendContext, styleContext);
nscoord textWidth =
nsLayoutUtils::GetStringWidth(this, rendContext, value.get(), value.Length());
textWidth += width;
if (textWidth > largestWidth)
largestWidth = textWidth;
}
}
}
}
mStringWidth = largestWidth;
return mStringWidth;
}