61 lines
2.5 KiB
C++
61 lines
2.5 KiB
C++
/***************************************************************************
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* Copyright (C) 2008-2012 by Andrzej Rybczak *
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* electricityispower@gmail.com *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
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***************************************************************************/
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#ifndef NCMPCPP_SCREEN_SWITCHER_H
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#define NCMPCPP_SCREEN_SWITCHER_H
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#include "global.h"
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class SwitchTo
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{
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template <bool ToBeExecuted, typename ScreenT> struct TabbableAction_ {
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static void execute(ScreenT *) { }
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};
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template <typename ScreenT> struct TabbableAction_<true, ScreenT> {
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static void execute(ScreenT *screen) {
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using Global::myScreen;
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// it has to work only if both current and previous screens are Tabbable
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if (dynamic_cast<Tabbable *>(myScreen))
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screen->setPreviousScreen(myScreen);
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}
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};
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public:
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template <typename ScreenT>
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static void execute(ScreenT *screen)
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{
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using Global::myScreen;
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using Global::myLockedScreen;
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const bool isScreenMergable = screen->isMergable() && myLockedScreen;
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const bool isScreenTabbable = std::is_base_of<Tabbable, ScreenT>::value;
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assert(myScreen != screen);
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if (isScreenMergable)
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updateInactiveScreen(screen);
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if (screen->hasToBeResized || isScreenMergable)
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screen->resize();
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TabbableAction_<isScreenTabbable, ScreenT>::execute(screen);
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myScreen = screen;
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}
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};
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#endif // NCMPCPP_SCREEN_SWITCHER_H
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