void Widget::FocusNavigationController::removeKeyboardEventListener()
{
if (nullptr != _keyboardListener)
{
EventDispatcher* dispatcher = Director::getInstance()->getEventDispatcher();
dispatcher->removeEventListener(_keyboardListener);
_keyboardListener = nullptr;
}
}
int EventDispatcherBinder::removeEventListener(lua_State* L)
{
StackChecker checker(L, "EventDispatcherBinder::removeEventListener", 0);
Binder binder(L);
EventDispatcher* eventDispatcher = static_cast<EventDispatcher*>(binder.getInstance("EventDispatcher"));
luaL_checktype(L, 2, LUA_TSTRING);
luaL_checktype(L, 3, LUA_TFUNCTION);
bool hasData = lua_gettop(L) >= 4;
createEventsTable(L, 1); // create __events table if it's not created
EventBinderMap& map = getOrCreateEventBinderMap(eventDispatcher);
const char* event = lua_tostring(L, 2);
int eventid = StringId::instance().id(event);
const std::vector<CppLuaBridge*>& bridges = map[eventid];
lua_getfield(L, 1, "__events");
// check if the event is already registered
CppLuaBridge* bridge = 0;
for (std::size_t i = 0; i < bridges.size(); ++i)
{
lua_pushlightuserdata(L, bridges[i]);
lua_rawget(L, -2); // we get the event check closure
if (hasData == false)
{
lua_pushvalue(L, 3); // function
lua_call(L, 1, 1);
}
else
{
lua_pushvalue(L, 3); // function
lua_pushvalue(L, 4); // data
lua_call(L, 2, 1);
}
if (lua_toboolean(L, -1))
{
bridge = bridges[i];
lua_pop(L, 1);
break;
}
else
lua_pop(L, 1);
}
if (bridge == 0) // event is not registered
{
lua_pop(L, 1); // pop __events
return 0;
}
luaL_rawgetptr(L, LUA_REGISTRYINDEX, &key_eventClosures);
lua_pushlightuserdata(L, bridge); // key=bridge
lua_pushnil(L); // value=nil
lua_rawset(L, -3); // envtable["eventClosures"][bridge] = nil
lua_pop(L, 1); // pop envtable["eventClosures"]
lua_pushlightuserdata(L, bridge); // key=bridge
lua_pushnil(L); // value = nil
lua_settable(L, -3); // __events[bridge] = nil
eventDispatcher->removeEventListener(LuaEvent::Type(event), bridge, &CppLuaBridge::luaEvent);
map.remove(eventid, bridge);
lua_pop(L, 1); // pop __events
return 0;
}
