UIWindow* UI::push (const std::string& windowID)
{
if (_noPushAllowed)
return nullptr;
if (!_stack.empty()) {
UIWindow* activeWindow = *_stack.rbegin();
if (activeWindow->getId() == windowID) {
// don't push the same window twice onto
// the stack just after each other
return activeWindow;
}
}
UIWindow* window = getWindow(windowID);
if (!window) {
error(LOG_CLIENT, "could not find window '" + windowID + "'");
return nullptr;
}
if (_stack.empty() && !window->isRoot())
return nullptr;
if (!window->onPush())
return nullptr;
info(LOG_CLIENT, "push window " + windowID);
System.track("pushwindow", window->getId());
if (!_stack.empty()) {
UIWindow* activeWindow = *_stack.rbegin();
activeWindow->onPushedOver();
}
_stack.push_back(window);
_stack.back()->onActive();
return window;
}
