Exemplo n.º 1
0
uint64_t
HTMLSelectOptionAccessible::NativeState() const
{
  // As a HTMLSelectOptionAccessible we can have the following states:
  // SELECTABLE, SELECTED, FOCUSED, FOCUSABLE, OFFSCREEN
  // Upcall to Accessible, but skip HyperTextAccessible impl
  // because we don't want EDITABLE or SELECTABLE_TEXT
  uint64_t state = Accessible::NativeState();

  Accessible* select = GetSelect();
  if (!select)
    return state;

  uint64_t selectState = select->State();
  if (selectState & states::INVISIBLE)
    return state;

  // Are we selected?
  HTMLOptionElement* option = HTMLOptionElement::FromNode(mContent);
  bool selected = option && option->Selected();
  if (selected)
    state |= states::SELECTED;

  if (selectState & states::OFFSCREEN) {
    state |= states::OFFSCREEN;
  } else if (selectState & states::COLLAPSED) {
    // <select> is COLLAPSED: add OFFSCREEN, if not the currently
    // visible option
    if (!selected) {
      state |= states::OFFSCREEN;
      // Ensure the invisible state is removed. Otherwise, group info will skip
      // this option. Furthermore, this gets cached and this doesn't get
      // invalidated even once the select is expanded.
      state &= ~states::INVISIBLE;
    } else {
      // Clear offscreen and invisible for currently showing option
      state &= ~(states::OFFSCREEN | states::INVISIBLE);
      state |= selectState & states::OPAQUE1;
    }
  } else {
    // XXX list frames are weird, don't rely on Accessible's general
    // visibility implementation unless they get reimplemented in layout
    state &= ~states::OFFSCREEN;
    // <select> is not collapsed: compare bounds to calculate OFFSCREEN
    Accessible* listAcc = Parent();
    if (listAcc) {
      nsIntRect optionRect = Bounds();
      nsIntRect listRect = listAcc->Bounds();
      if (optionRect.Y() < listRect.Y() ||
          optionRect.YMost() > listRect.YMost()) {
        state |= states::OFFSCREEN;
      }
    }
  }

  return state;
}
uint64_t
HTMLSelectOptionAccessible::NativeState()
{
  // As a HTMLSelectOptionAccessible we can have the following states:
  // SELECTABLE, SELECTED, FOCUSED, FOCUSABLE, OFFSCREEN
  // Upcall to Accessible, but skip HyperTextAccessible impl
  // because we don't want EDITABLE or SELECTABLE_TEXT
  uint64_t state = Accessible::NativeState();

  Accessible* select = GetSelect();
  if (!select)
    return state;

  uint64_t selectState = select->State();
  if (selectState & states::INVISIBLE)
    return state;

  // Are we selected?
  HTMLOptionElement* option = HTMLOptionElement::FromContent(mContent);
  bool selected = option && option->Selected();
  if (selected)
    state |= states::SELECTED;

  if (selectState & states::OFFSCREEN) {
    state |= states::OFFSCREEN;
  } else if (selectState & states::COLLAPSED) {
    // <select> is COLLAPSED: add OFFSCREEN, if not the currently
    // visible option
    if (!selected) {
      state |= states::OFFSCREEN;
      state ^= states::INVISIBLE;
    } else {
      // Clear offscreen and invisible for currently showing option
      state &= ~(states::OFFSCREEN | states::INVISIBLE);
      state |= selectState & states::OPAQUE1;
    }
  } else {
    // XXX list frames are weird, don't rely on Accessible's general
    // visibility implementation unless they get reimplemented in layout
    state &= ~states::OFFSCREEN;
    // <select> is not collapsed: compare bounds to calculate OFFSCREEN
    Accessible* listAcc = Parent();
    if (listAcc) {
      nsIntRect optionRect = Bounds();
      nsIntRect listRect = listAcc->Bounds();
      if (optionRect.y < listRect.y ||
          optionRect.y + optionRect.height > listRect.y + listRect.height) {
        state |= states::OFFSCREEN;
      }
    }
  }

  return state;
}