void
AccessibleCaret::EnsureApzAware()
{
// If the caret element was cloned, the listener might have been lost. So
// if that's the case we register a dummy listener if there isn't one on
// the element already.
if (!CaretElement()->IsApzAware()) {
CaretElement()->AddEventListener(NS_LITERAL_STRING("touchstart"),
mDummyTouchListener, false);
}
}
void
AccessibleCaret::RemoveCaretElement(nsIDocument* aDocument)
{
CaretElement()->RemoveEventListener(NS_LITERAL_STRING("touchstart"),
mDummyTouchListener, false);
ErrorResult rv;
aDocument->RemoveAnonymousContent(*mCaretElementHolder, rv);
// It's OK rv is failed since nsCanvasFrame might not exists now.
}
bool
AccessibleCaret::Intersects(const AccessibleCaret& aCaret) const
{
MOZ_ASSERT(mPresShell == aCaret.mPresShell);
if (!IsVisuallyVisible() || !aCaret.IsVisuallyVisible()) {
return false;
}
nsRect rect = nsLayoutUtils::GetRectRelativeToFrame(CaretElement(), RootFrame());
nsRect rhsRect = nsLayoutUtils::GetRectRelativeToFrame(aCaret.CaretElement(), RootFrame());
return rect.Intersects(rhsRect);
}
void
AccessibleCaret::InjectCaretElement(nsIDocument* aDocument)
{
ErrorResult rv;
nsCOMPtr<Element> element = CreateCaretElement(aDocument);
mCaretElementHolder = aDocument->InsertAnonymousContent(*element, rv);
MOZ_ASSERT(!rv.Failed(), "Insert anonymous content should not fail!");
MOZ_ASSERT(mCaretElementHolder.get(), "We must have anonymous content!");
// InsertAnonymousContent will clone the element to make an AnonymousContent.
// Since event listeners are not being cloned when cloning a node, we need to
// add the listener here.
CaretElement()->AddEventListener(NS_LITERAL_STRING("touchstart"),
mDummyTouchListener, false);
}
void
AccessibleCaret::SetCaretElementStyle(const nsRect& aRect)
{
nsPoint position = CaretElementPosition(aRect);
nsAutoString styleStr;
styleStr.AppendPrintf("left: %dpx; top: %dpx;",
nsPresContext::AppUnitsToIntCSSPixels(position.x),
nsPresContext::AppUnitsToIntCSSPixels(position.y));
float zoomLevel = GetZoomLevel();
styleStr.AppendPrintf(" width: %.2fpx; height: %.2fpx; margin-left: %.2fpx",
sWidth / zoomLevel,
sHeight / zoomLevel,
sMarginLeft / zoomLevel);
ErrorResult rv;
CaretElement()->SetAttribute(NS_LITERAL_STRING("style"), styleStr, rv);
MOZ_ASSERT(!rv.Failed());
AC_LOG("Set caret style: %s", NS_ConvertUTF16toUTF8(styleStr).get());
}
