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115 lines
3.4 KiB
C++
115 lines
3.4 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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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 3 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, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef COMMON_DIALOG_MANAGER_H
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#define COMMON_DIALOG_MANAGER_H
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#include "common/scummsys.h"
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#if defined(USE_SYSDIALOGS)
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#include "common/fs.h"
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#include "common/system.h"
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#include "common/events.h"
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namespace Common {
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/**
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* @defgroup common_dialogs Dialog Manager
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* @ingroup common
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*
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* @brief The Dialog Manager allows GUI code to interact with native system dialogs.
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*
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* @{
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*/
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/**
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* The DialogManager allows GUI code to interact with native system dialogs.
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*/
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class DialogManager {
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public:
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/**
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* Values representing the user response to a dialog.
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*/
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enum DialogResult {
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kDialogError = -1, ///< Dialog could not be displayed.
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kDialogCancel = 0, ///< User cancelled the dialog (Cancel/No/Close buttons).
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kDialogOk = 1 ///< User confirmed the dialog (OK/Yes buttons).
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};
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DialogManager() : _wasFullscreen(false) {}
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virtual ~DialogManager() {}
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/**
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* Display a dialog for selecting a file or folder in the file system.
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*
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* @param title Dialog title.
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* @param choice Path selected by the user.
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* @param isDirBrowser Restrict selection to directories.
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* @return The dialog result.
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*/
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virtual DialogResult showFileBrowser(const Common::U32String &title, FSNode &choice, bool isDirBrowser = false) { return kDialogError; }
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protected:
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bool _wasFullscreen;
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/**
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* Call before opening a dialog.
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*/
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void beginDialog() {
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// If we were in fullscreen mode, switch back
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_wasFullscreen = g_system->getFeatureState(OSystem::kFeatureFullscreenMode);
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if (_wasFullscreen) {
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g_system->beginGFXTransaction();
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g_system->setFeatureState(OSystem::kFeatureFullscreenMode, false);
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g_system->endGFXTransaction();
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}
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}
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/**
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* Call after closing a dialog.
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*/
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void endDialog() {
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// While the native file browser is open, any input events (e.g. keypresses) are
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// still received by the application. With SDL backend for example this results in the
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// events beeing queued and processed after we return, thus dispatching events that were
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// intended for the native file browser. For example: pressing Esc to cancel the native
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// file browser would cause the application to quit in addition to closing the
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// file browser. To avoid this happening clear all pending events.
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g_system->getEventManager()->getEventDispatcher()->clearEvents();
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// If we were in fullscreen mode, switch back
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if (_wasFullscreen) {
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g_system->beginGFXTransaction();
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g_system->setFeatureState(OSystem::kFeatureFullscreenMode, true);
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g_system->endGFXTransaction();
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}
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}
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};
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/** @} */
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} // End of namespace Common
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#endif
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#endif // COMMON_DIALOG_MANAGER_H
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