protot/3rdparty/RuntimeCompiledCpp/RuntimeCompiler/IFileChangeNotifier.h

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