C++ (Cpp) NS_DIRECTION_FROM_KEY_CODE примеры использования

Пример #1

/* boolean handleKeyPress (in nsIDOMKeyEvent keyEvent); */
NS_IMETHODIMP nsMenuBoxObject::HandleKeyPress(nsIDOMKeyEvent* aKeyEvent, bool* aHandledFlag)
{
  *aHandledFlag = PR_FALSE;
  NS_ENSURE_ARG(aKeyEvent);

  nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
  if (!pm)
    return NS_OK;

  // if event has already been handled, bail
  nsCOMPtr<nsIDOMNSEvent> domNSEvent = do_QueryInterface(aKeyEvent);
  if (!domNSEvent)
    return NS_OK;

  bool eventHandled = false;
  domNSEvent->GetPreventDefault(&eventHandled);
  if (eventHandled)
    return NS_OK;

  if (nsMenuBarListener::IsAccessKeyPressed(aKeyEvent))
    return NS_OK;

  nsIFrame* frame = GetFrame(PR_FALSE);
  if (!frame || frame->GetType() != nsGkAtoms::menuFrame)
    return NS_OK;

  nsMenuPopupFrame* popupFrame = static_cast<nsMenuFrame *>(frame)->GetPopup();
  if (!popupFrame)
    return NS_OK;

  PRUint32 keyCode;
  aKeyEvent->GetKeyCode(&keyCode);
  switch (keyCode) {
    case NS_VK_UP:
    case NS_VK_DOWN:
    case NS_VK_HOME:
    case NS_VK_END:
    {
      nsNavigationDirection theDirection;
      theDirection = NS_DIRECTION_FROM_KEY_CODE(popupFrame, keyCode);
      *aHandledFlag =
        pm->HandleKeyboardNavigationInPopup(popupFrame, theDirection);
      return NS_OK;
    }
    default:
      *aHandledFlag = pm->HandleShortcutNavigation(aKeyEvent, popupFrame);
      return NS_OK;
  }
}

Пример #2

Файл: nsMenuBoxObject.cpp Проект: AshishNamdev/mozilla-central

/* boolean handleKeyPress (in nsIDOMKeyEvent keyEvent); */
NS_IMETHODIMP nsMenuBoxObject::HandleKeyPress(nsIDOMKeyEvent* aKeyEvent, bool* aHandledFlag)
{
  *aHandledFlag = false;
  NS_ENSURE_ARG(aKeyEvent);

  nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
  if (!pm)
    return NS_OK;

  // if event has already been handled, bail
  bool eventHandled = false;
  aKeyEvent->GetPreventDefault(&eventHandled);
  if (eventHandled)
    return NS_OK;

  if (nsMenuBarListener::IsAccessKeyPressed(aKeyEvent))
    return NS_OK;

  nsMenuFrame* menu = do_QueryFrame(GetFrame(false));
  if (!menu)
    return NS_OK;

  nsMenuPopupFrame* popupFrame = menu->GetPopup();
  if (!popupFrame)
    return NS_OK;

  uint32_t keyCode;
  aKeyEvent->GetKeyCode(&keyCode);
  switch (keyCode) {
    case NS_VK_UP:
    case NS_VK_DOWN:
    case NS_VK_HOME:
    case NS_VK_END:
    {
      nsNavigationDirection theDirection;
      theDirection = NS_DIRECTION_FROM_KEY_CODE(popupFrame, keyCode);
      *aHandledFlag =
        pm->HandleKeyboardNavigationInPopup(popupFrame, theDirection);
      return NS_OK;
    }
    default:
      *aHandledFlag = pm->HandleShortcutNavigation(aKeyEvent, popupFrame);
      return NS_OK;
  }
}