/** This function returns the last widget found in within_vector.
* \param within_vector The vector to look into
* \return The result of the search, or NULL if the object is not found */
Widget* AbstractTopLevelContainer::getLastWidget(
PtrVector<Widget>* within_vector)
{
if (m_last_widget != NULL) return m_last_widget;
if (within_vector == NULL) within_vector = &m_widgets;
for (int i = within_vector->size()-1; i >= 0; i--)
{
if (!within_vector->get(i)->m_focusable) continue;
// if container, also checks children
if (within_vector->get(i)->getChildren().size() > 0 &&
within_vector->get(i)->getType() != WTYPE_RIBBON &&
within_vector->get(i)->getType() != WTYPE_SPINNER)
{
Widget* w = getLastWidget(&within_vector->get(i)->m_children);
if (w != NULL) return w;
}
Widget* item = within_vector->get(i);
IGUIElement* elem = item->getIrrlichtElement();
if (elem == NULL ||
elem->getTabOrder() == -1 ||
!Widget::isFocusableId(elem->getTabOrder()) ||
!item->m_focusable)
{
continue;
}
return item;
} // for i in all widgets of within_vector
return NULL;
} // getLastWidget
void EventHandler::navigateDown(const int playerID, Input::InputType type, const bool pressedDown)
{
//std::cout << "Naviagte down!\n";
IGUIElement *el = NULL, *closest = NULL;
if (type == Input::IT_STICKBUTTON && !pressedDown)
return;
Widget* w = GUIEngine::getFocusForPlayer(playerID);
if (w != NULL)
{
el = w->getIrrlichtElement();
}
//std::cout << "!!! Player " << playerID << " navigating down of " << w->m_element->getID() << std::endl;
// list widgets are a bit special, because up/down keys are also used
// to navigate between various list items, not only to navigate between
// components
if (w != NULL && w->m_type == WTYPE_LIST)
{
ListWidget* list = (ListWidget*)w;
const bool stay_within_list = list->getSelectionID() < list->getItemCount()-1;
if (stay_within_list)
{
list->setSelectionID(list->getSelectionID()+1);
return;
}
else
{
list->setSelectionID(-1);
}
}
if (w != NULL && w->m_tab_down_root != -1)
{
Widget* down = GUIEngine::getWidget( w->m_tab_down_root );
assert(down != NULL);
el = down->getIrrlichtElement();
if (el == NULL)
{
std::cerr << "WARNING : m_tab_down_root is set to an ID for which I can't find the widget\n";
return;
}
}
// don't allow navigating to any widget when a dialog is shown; only navigate to widgets in the dialog
if (ModalDialog::isADialogActive() && !ModalDialog::getCurrent()->isMyIrrChild(el))
{
el = NULL;
}
bool found = false;
if (el != NULL && el->getTabGroup() != NULL)
{
// if the current widget is e.g. 5, search for widget 6, 7, 8, 9, ..., 15 (up to 10 IDs may be missing)
for (int n=1; n<10 && !found; n++)
{
closest = GUIEngine::getGUIEnv()->getRootGUIElement()->getElementFromId(el->getTabOrder() + n, true);
if (closest != NULL && Widget::isFocusableId(closest->getID()))
{
Widget* closestWidget = GUIEngine::getWidget( closest->getID() );
if (playerID != PLAYER_ID_GAME_MASTER && !closestWidget->m_supports_multiplayer) return;
// if a dialog is shown, restrict to items in the dialog
if (ModalDialog::isADialogActive() && !ModalDialog::getCurrent()->isMyChild(closestWidget))
{
continue;
}
if (NAVIGATION_DEBUG)
{
std::cout << "Navigating down to " << closestWidget->getID() << "\n";
}
assert( closestWidget != NULL );
closestWidget->setFocusForPlayer(playerID);
// another list exception : when entering a list, select the first item
if (closestWidget->m_type == WTYPE_LIST)
{
IGUIListBox* list = (IGUIListBox*)(closestWidget->m_element);
assert(list != NULL);
list->setSelected(0);
}
found = true;
}
} // end for
}
if (!found)
{
if (NAVIGATION_DEBUG) std::cout << "Navigating down : wrap around\n";
// select the first widget
Widget* firstWidget = NULL;
if (ModalDialog::isADialogActive())
{
//std::cout << "w = ModalDialog::getCurrent()->getFirstWidget();\n";
firstWidget = ModalDialog::getCurrent()->getFirstWidget();
}
else
{
Screen* screen = GUIEngine::getCurrentScreen();
if (screen == NULL) return;
firstWidget = screen->getFirstWidget();
}
if (firstWidget != NULL) firstWidget->setFocusForPlayer(playerID);
}
}
/**
* Focus the next widget either downwards or upwards.
*
* \param reverse True means navigating up, false means down.
*/
void EventHandler::navigate(const int playerID, Input::InputType type, const bool pressedDown, const bool reverse)
{
IGUIElement *el = NULL, *closest = NULL;
if (type == Input::IT_STICKBUTTON && !pressedDown)
return;
Widget* w = GUIEngine::getFocusForPlayer(playerID);
if (w != NULL)
{
el = w->getIrrlichtElement();
}
// list widgets are a bit special, because up/down keys are also used
// to navigate between various list items, not only to navigate between
// components
if (w != NULL && w->m_type == WTYPE_LIST)
{
ListWidget* list = (ListWidget*) w;
const bool stay_within_list = reverse ? list->getSelectionID() > 0 :
list->getSelectionID() < list->getItemCount() - 1;
if (stay_within_list)
{
if (reverse)
list->setSelectionID(list->getSelectionID() - 1);
else
list->setSelectionID(list->getSelectionID() + 1);
return;
}
else
{
list->setSelectionID(-1);
}
}
if (w != NULL && ((reverse && w->m_tab_up_root != -1) || (!reverse && w->m_tab_down_root != -1)))
{
Widget* next = GUIEngine::getWidget(reverse ? w->m_tab_up_root : w->m_tab_down_root);
assert(next != NULL);
el = next->getIrrlichtElement();
if (el == NULL)
{
std::cerr << "WARNING : m_tab_down/up_root is set to an ID for which I can't find the widget\n";
return;
}
}
// don't allow navigating to any widget when a dialog is shown; only navigate to widgets in the dialog
if (ModalDialog::isADialogActive() && !ModalDialog::getCurrent()->isMyIrrChild(el))
{
el = NULL;
}
bool found = false;
// find closest widget
if (el != NULL && el->getTabGroup() != NULL)
{
// Up: if the current widget is e.g. 15, search for widget 14, 13, 12, ... (up to 10 IDs may be missing)
// Down: if the current widget is e.g. 5, search for widget 6, 7, 8, 9, ..., 15 (up to 10 IDs may be missing)
for (int n = 1; n < 10 && !found; n++)
{
closest = GUIEngine::getGUIEnv()->getRootGUIElement()->getElementFromId(el->getTabOrder() + (reverse ? -n : n), true);
if (closest != NULL && Widget::isFocusableId(closest->getID()))
{
Widget* closestWidget = GUIEngine::getWidget( closest->getID() );
if (playerID != PLAYER_ID_GAME_MASTER && !closestWidget->m_supports_multiplayer) return;
// if a dialog is shown, restrict to items in the dialog
if (ModalDialog::isADialogActive() && !ModalDialog::getCurrent()->isMyChild(closestWidget))
continue;
if (NAVIGATION_DEBUG)
{
std::cout << "Navigating " << (reverse ? "up" : "down") << " to " << closest->getID() << std::endl;
}
assert(closestWidget != NULL);
if (!closestWidget->isVisible() || !closestWidget->isActivated())
continue;
closestWidget->setFocusForPlayer(playerID);
// another list exception : when entering a list by going down, select the first item
// when focusing a list by going up, select the last item of the list
if (closestWidget->m_type == WTYPE_LIST)
{
ListWidget* list = (ListWidget*) closestWidget;
assert(list != NULL);
list->setSelectionID(reverse ? list->getItemCount() - 1 : 0);
}
found = true;
}
} // end for
}
if (!found)
{
if (NAVIGATION_DEBUG)
std::cout << "EventHandler::navigat : wrap around\n";
// select the last/first widget
Widget* wrapWidget = NULL;
if (ModalDialog::isADialogActive())
{
wrapWidget = reverse ? ModalDialog::getCurrent()->getLastWidget() :
ModalDialog::getCurrent()->getFirstWidget();
}
else
{
Screen* screen = GUIEngine::getCurrentScreen();
if (screen == NULL) return;
wrapWidget = reverse ? screen->getLastWidget() :
screen->getFirstWidget();
}
if (wrapWidget != NULL) wrapWidget->setFocusForPlayer(playerID);
}
}
