mac_pref_file.h

著名的 helix realplayer 基于手机 symbian 系统的 播放器全套源代码

/* ***** BEGIN LICENSE BLOCK ***** 
 * Version: RCSL 1.0/RPSL 1.0 
 *  
 * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved. 
 *      
 * The contents of this file, and the files included with this file, are 
 * subject to the current version of the RealNetworks Public Source License 
 * Version 1.0 (the "RPSL") available at 
 * http://www.helixcommunity.org/content/rpsl unless you have licensed 
 * the file under the RealNetworks Community Source License Version 1.0 
 * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl, 
 * in which case the RCSL will apply. You may also obtain the license terms 
 * directly from RealNetworks.  You may not use this file except in 
 * compliance with the RPSL or, if you have a valid RCSL with RealNetworks 
 * applicable to this file, the RCSL.  Please see the applicable RPSL or 
 * RCSL for the rights, obligations and limitations governing use of the 
 * contents of the file.  
 *  
 * This file is part of the Helix DNA Technology. RealNetworks is the 
 * developer of the Original Code and owns the copyrights in the portions 
 * it created. 
 *  
 * This file, and the files included with this file, is distributed and made 
 * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 
 * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES, 
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 * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
 * 
 * Technology Compatibility Kit Test Suite(s) Location: 
 *    http://www.helixcommunity.org/content/tck 
 * 
 * Contributor(s): 
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 * ***** END LICENSE BLOCK ***** */ 

#include "filespec.h"
#include "cfwrappers.h"

class CMacPrefFile
{
    public:
    	static CMacPrefFile* CreatePrefXMLObject( CHXFileSpecifier& fileSpec, CFStringRef appIDStringRef, const char* pProductName );
    	static CMacPrefFile* CreatePrefSystemObject( CFStringRef appIDStringRef, CFStringRef userNameRef, CFStringRef hostNameRef );
    	
    	CMacPrefFile() {};
	virtual ~CMacPrefFile() {};
	
	// The following public APIs are meant to mirror the CFPreferences APIs
	
	virtual CFPropertyListRef CopyValue( CFStringRef key ) = 0;
	virtual void SetValue( CFStringRef key, CFPropertyListRef value ) = 0;
	virtual void Synchronize( void ) = 0;
	
	virtual CFArrayRef CopyKeyList() = 0;
};

//
// CMacPrefFileCFPref is the version that uses CFPreferences directly
//

class CMacPrefFileCFPref : public CMacPrefFile
{
    public:
    	CMacPrefFileCFPref();
	virtual ~CMacPrefFileCFPref();
		
	void SetPrefsID( CFStringRef appIDStringRef, CFStringRef userNameRef, CFStringRef hostNameRef );
	
	virtual CFPropertyListRef CopyValue( CFStringRef key );
	virtual void SetValue( CFStringRef key, CFPropertyListRef value );
	
	virtual CFArrayRef CopyKeyList();
	virtual void Synchronize( void );
	

    private:
    	void Destroy();
    		
	// these are set by SetPrefsID...
	CFStringRef 		m_PrefsAppIDNameRef;
	CFStringRef 		m_UserNameRef;
	CFStringRef 		m_HostNameRef;
	
	Boolean			m_bInitialized;
};

#ifndef _MAC_UNIX

//
// CMacPrefFileXML uses a CFDictionary and writes to an XML file
//

class CMacPrefFileXML : public CMacPrefFile
{
    public:
    	CMacPrefFileXML();
	virtual ~CMacPrefFileXML();
		
	void SetPrefsFileSpec( const CHXFileSpecifier& fileSpec, CFStringRef appIDStringRef, const char* pProductName );
	
	virtual CFPropertyListRef CopyValue( CFStringRef key );
	virtual void SetValue( CFStringRef key, CFPropertyListRef value );
	
	virtual CFArrayRef CopyKeyList();
	virtual void Synchronize( void );
	

    private:
    	static void CopyKeyListProc( const void *key, const void *value, void *context ); // used by CopyKeyList
    	
    	void WriteToFile();
    	void ReadFromFile();
    	void UpdateDictFromFile( Boolean forceReadFromFile );
    	void WriteToFileIfNecessary();
    	SInt32 GetGlobalCoherenceSeed();
    	
	// these are set by SetPrefsFileSpec...
	CHXFileSpecifier	m_FileSpec;
	CFMutableDictionaryRef	m_DictRef;
	
	SInt32			m_CoherenceSeed;    // matches the sync seed value in user prefs if our dictionary is up-to-date
	CHXCFString		m_cfsCoherenceKey;   // key for sync seed value in the user prefs
	CHXCFString 		m_cfsPrefsAppIDNameRef;
	
};

#endif