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/** 
 * @dir lldirpicker.h
 * @brief OS-specific dir picker
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 * 
 * 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;
 * version 2.1 of the License only.
 * 
 * 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 library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

// OS specific dir selection dialog. This is implemented as a
// singleton class, so call the instance() method to get the working
// instance. 

#ifndef LL_LLDIRPICKER_H
#define LL_LLDIRPICKER_H

#include "stdtypes.h"

#if LL_DARWIN
#include <Carbon/Carbon.h>

// AssertMacros.h does bad things.
#include "fix_macros.h"
#undef verify
#undef require

#include <vector>
#include "llstring.h"

#endif

// Need commdlg.h for OPENDIRNAMEA
#ifdef LL_WINDOWS
#include <commdlg.h>
#endif

class LLFilePicker;

class LLDirPicker
{
public:
	// calling this before main() is undefined
	static LLDirPicker& instance( void ) { return sInstance; }

	BOOL getDir(std::string* filename);
	std::string getDirName();

	// clear any lists of buffers or whatever, and make sure the dir
	// picker isn't locked.
	void reset();

private:
	enum
	{
		SINGLE_DIRNAME_BUFFER_SIZE = 1024,
		//DIRNAME_BUFFER_SIZE = 65536
		DIRNAME_BUFFER_SIZE = 65000 
	};
	
	void buildDirname( void );
	bool check_local_file_access_enabled();

#if LL_DARWIN
	NavDialogCreationOptions mNavOptions;
	static pascal void doNavCallbackEvent(NavEventCallbackMessage callBackSelector,
										 NavCBRecPtr callBackParms, void* callBackUD);
	OSStatus	doNavChooseDialog();
	
#endif

#if LL_LINUX || LL_SOLARIS
	// On Linux we just implement LLDirPicker on top of LLFilePicker
	LLFilePicker *mFilePicker;
#endif

	std::string* mFileName;
	std::string  mDir;
	bool mLocked;

	static LLDirPicker sInstance;
	
public:
	// don't call these directly please.
	LLDirPicker();
	~LLDirPicker();
};

#endif