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/********************************************************************************
* *
* F O X E v e n t L o o p *
* *
*********************************************************************************
* Copyright (C) 2019,2022 by Jeroen van der Zijp. All Rights Reserved. *
*********************************************************************************
* This library is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Lesser General Public License as published by *
* the Free Software Foundation; either version 3 of the License, or *
* (at your option) any later version. *
* *
* This library is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/> *
********************************************************************************/
#ifndef FXEVENTLOOP_H
#define FXEVENTLOOP_H
namespace FX {
// Forward declarations
class FXWindow;
class FXEventLoop;
class FXEventDispatcher;
/// Recursive event loop
class FXAPI FXEventLoop {
private:
FXEventDispatcher *dispatcher; // Event dispatcher
FXEventLoop **invocation; // Pointer to variable holding pointer to current invocation
FXEventLoop *upper; // Invocation above this one
FXWindow *window; // Modal window (if any)
FXuint modality; // Modality mode
FXint code; // Return code
FXbool done; // True if breaking out
public:
enum{
ModalForNone = 0,
ModalForWindow = 1,
ModalForPopup = 2
};
private:
FXEventLoop(const FXEventLoop&);
FXEventLoop& operator=(const FXEventLoop&);
public:
/// Initialize event loop
FXEventLoop(FXEventLoop** inv,FXWindow* win=nullptr,FXuint mode=0);
/// Set dispatcher
void setDispatcher(FXEventDispatcher* disp){ dispatcher=disp; }
/// Get dispatcher
FXEventDispatcher* getDispatcher() const { return dispatcher; }
/// Test if the window is involved in a modal invocation
FXbool isModal(FXWindow *win) const;
/// Return window of current modal event loop
FXWindow* getModalWindow() const;
/// Return window of this model event loop
FXWindow* getWindow() const { return window; }
/// Return mode of this model event loop
FXuint getModality() const { return modality; }
/// Break out of topmost event loop, closing all nested loops
void stop(FXint value);
/// Break out of modal loop matching window, and all deeper ones
void stopModal(FXWindow* win,FXint value);
/// Break out of modal loop, and all deeper non-modal ones
void stopModal(FXint value);
/// Destroy event loop
~FXEventLoop();
};
}
#endif
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