int HTMLTextFormControlElement::computeSelectionStart() const { ASSERT(isTextFormControl()); LocalFrame* frame = document().frame(); if (!frame) return 0; return indexForVisiblePosition(VisiblePosition(frame->selection().start())); }
int HTMLTextFormControlElement::computeSelectionEnd() const { ASSERT(isTextFormControl()); Frame* frame = document()->frame(); if (!frame) return 0; return indexForVisiblePosition(frame->selection()->end()); }
VisiblePosition HTMLTextFormControlElement::visiblePositionForIndex(int index) const { VisiblePosition position = positionForIndex(innerTextElement(), index); ASSERT(indexForVisiblePosition(position) == index); return position; }