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/**
* @file lllivefile.h
* @brief Automatically reloads a file whenever it changes or is removed.
*
* $LicenseInfo:firstyear=2006&license=viewergpl$
*
* Copyright (c) 2006-2009, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at
* http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#ifndef LL_LLLIVEFILE_H
#define LL_LLLIVEFILE_H
const F32 configFileRefreshRate = 5.0; // seconds
class LLLiveFile
{
public:
LLLiveFile(const std::string &filename, const F32 refresh_period = 5.f);
virtual ~LLLiveFile();
bool checkAndReload();
// Returns true if the file changed in any way
// Call this before using anything that was read & cached from the file
std::string filename() const;
void addToEventTimer();
// Normally, just calling checkAndReload() is enough. In some cases
// though, you may need to let the live file periodically check itself.
void setRefreshPeriod(F32 seconds);
protected:
virtual void loadFile() = 0; // Implement this to load your file if it changed
private:
class Impl;
Impl& impl;
};
#endif //LL_LLLIVEFILE_H
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