Exemple #1
0
void SelectionManager::ProcessTextSelChangeEvent(AccEvent* aEvent) {
  // Fire selection change event if it's not pure caret-move selection change,
  // i.e. the accessible has or had not collapsed selection.
  AccTextSelChangeEvent* event = downcast_accEvent(aEvent);
  if (!event->IsCaretMoveOnly()) nsEventShell::FireEvent(aEvent);

  // Fire caret move event if there's a caret in the selection.
  nsINode* caretCntrNode = nsCoreUtils::GetDOMNodeFromDOMPoint(
      event->mSel->GetFocusNode(), event->mSel->FocusOffset());
  if (!caretCntrNode) return;

  HyperTextAccessible* caretCntr = nsAccUtils::GetTextContainer(caretCntrNode);
  NS_ASSERTION(
      caretCntr,
      "No text container for focus while there's one for common ancestor?!");
  if (!caretCntr) return;

  Selection* selection = caretCntr->DOMSelection();

  // XXX Sometimes we can't get a selection for caretCntr, in that case assume
  // event->mSel is correct.
  if (!selection) selection = event->mSel;

  mCaretOffset = caretCntr->DOMPointToOffset(selection->GetFocusNode(),
                                             selection->FocusOffset());
  mAccWithCaret = caretCntr;
  if (mCaretOffset != -1) {
    RefPtr<AccCaretMoveEvent> caretMoveEvent =
        new AccCaretMoveEvent(caretCntr, mCaretOffset, aEvent->FromUserInput());
    nsEventShell::FireEvent(caretMoveEvent);
  }
}