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/********************************************************************************
* *
* W a t c h D i r e c t o r i e s f o r C h a n g e s *
* *
*********************************************************************************
* Copyright (C) 2006,2022 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 FXDIRWATCH_H
#define FXDIRWATCH_H
#ifndef FXOBJECT_H
#include "FXObject.h"
#endif
namespace FX {
class FXApp;
#define DIRWATCH 1
/**
* Watches one or more directories (on Linux, also files..).
* Issue messages when one of them was changed.
* Each path has a corresponding handle which is used to interact with
* the operating system.
*/
class FXAPI FXDirWatch : public FXObject {
FXDECLARE(FXDirWatch)
private:
FXApp* app; // Back link to application object
protected:
FXInputHandle hnd; // Handle
FXDictionary pathToHandle; // Path to handle map
FXReverseDictionary handleToPath; // Handle to path map
FXTime timestamp; // Time stamp
FXObject* target; // Target object
FXSelector message; // Message ID
private:
FXDirWatch(const FXDirWatch&);
FXDirWatch& operator=(const FXDirWatch&);
public:
enum{
ID_CHANGE=1,
ID_LAST
};
public:
long onMessage(FXObject*,FXSelector,void*);
public:
/// Initialize directory watcher
FXDirWatch(FXApp* a=nullptr,FXObject* tgt=nullptr,FXSelector sel=0);
/// Get application pointer
FXApp* getApp() const { return app; }
/// Set the message target object
void setTarget(FXObject *t){ target=t; }
/// Get the message target object
FXObject* getTarget() const { return target; }
/// Set the message identifier
void setSelector(FXSelector sel){ message=sel; }
/// Get the message identifier
FXSelector getSelector() const { return message; }
/// Add path to watch; return true if added
FXbool addWatch(const FXString& path);
/// Remove path to watch; return true if removed
FXbool remWatch(const FXString& path);
/// Clear all watches
FXbool clearAll();
/// Clean up directory watcher
virtual ~FXDirWatch();
};
}
#endif
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