78 lines
2.6 KiB
C
78 lines
2.6 KiB
C
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//
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// Copyright (c) 2010-2011 Matthew Jack and Doug Binks
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//
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// This software is provided 'as-is', without any express or implied
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// warranty. In no event will the authors be held liable for any damages
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// arising from the use of this software.
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it
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// freely, subject to the following restrictions:
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// 1. The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software. If you use this software
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// in a product, an acknowledgment in the product documentation would be
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// appreciated but is not required.
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// 2. Altered source versions must be plainly marked as such, and must not be
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// misrepresented as being the original software.
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// 3. This notice may not be removed or altered from any source distribution.
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#pragma once
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#ifndef IFILECHANGENOTIFIER_INCLUDED
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#define IFILECHANGENOTIFIER_INCLUDED
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#include "../RuntimeCompiler/AUArray.h"
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#include <set>
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struct IFileChangeListener;
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struct IFileChangeNotifier
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{
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virtual bool IsMonitoringActive() const = 0;
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virtual void SetMonitoringActive( bool bActive ) = 0;
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virtual float GetMinTimeBetweenNotifications() const = 0;
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virtual void SetMinTimeBetweenNotifications( float fMinTime ) = 0;
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// Delay to allow multiple file changes to accumulate before notifying listeners
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virtual float GetChangeNotifyDelay() const = 0;
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virtual void SetChangeNotifyDelay( float fDelay ) = 0;
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virtual void Update( float fTimeDelta ) = 0;
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virtual void Watch( const char *filename, IFileChangeListener *pListener ) = 0; // can be file or directory
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virtual void RemoveListener( IFileChangeListener *pListener ) = 0;
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virtual ~IFileChangeNotifier() {}
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};
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// IFileChangeListener will automatically deregister with FileChangeNotifier
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// it registered with (via Watch method) on destruction
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// Will not give expected results if the listener registers with multiple notifiers
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struct IFileChangeListener
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{
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IFileChangeListener() : _registeredNotifier(0) {}
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virtual ~IFileChangeListener()
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{
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if (_registeredNotifier)
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{
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_registeredNotifier->RemoveListener(this);
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}
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}
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// Listener must make copies of strings if it wants to store them
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virtual void OnFileChange( const IAUDynArray<const char*>& filelist ) = 0;
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// Should be called by IFileChangeNotifier implementation only
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void OnRegisteredWithNotifier( IFileChangeNotifier* pNotifier )
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{
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_registeredNotifier = pNotifier;
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}
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private:
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IFileChangeNotifier* _registeredNotifier;
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};
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#endif // IFILECHANGENOTIFIER_INCLUDED
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