axmol/cocos/2d/CCUserDefault.h

/****************************************************************************
Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2013-2014 Chukong Technologies Inc.

http://www.cocos2d-x.org

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#ifndef __SUPPORT_CCUSERDEFAULT_H__
#define __SUPPORT_CCUSERDEFAULT_H__

#include "base/CCPlatformMacros.h"
#include <string>
#include "base/CCData.h"

NS_CC_BEGIN

/**
 * @addtogroup data_storage
 * @{
 */

/**
 * UserDefault acts as a tiny database. You can save and get base type values by it.
 * For example, setBoolForKey("played", true) will add a bool value true into the database.
 * Its key is "played". You can get the value of the key by getBoolForKey("played").
 * 
 * It supports the following base types:
 * bool, int, float, double, string
 */
class CC_DLL UserDefault
{
public:
    // get value methods

    /**
    @brief Get bool value by key, if the key doesn't exist, a default value will return.
     You can set the default value, or it is false.
    * @js NA
    */
    bool    getBoolForKey(const char* pKey);
    /**
     * @js NA
     */
    bool    getBoolForKey(const char* pKey, bool defaultValue);
    /**
    @brief Get integer value by key, if the key doesn't exist, a default value will return.
     You can set the default value, or it is 0.
    * @js NA
    */
    int     getIntegerForKey(const char* pKey);
    /**
     * @js NA
     */
    int     getIntegerForKey(const char* pKey, int defaultValue);
    /**
    @brief Get float value by key, if the key doesn't exist, a default value will return.
     You can set the default value, or it is 0.0f.
    * @js NA
    */
    float    getFloatForKey(const char* pKey);
    /**
     * @js NA
     */
    float    getFloatForKey(const char* pKey, float defaultValue);
    /**
    @brief Get double value by key, if the key doesn't exist, a default value will return.
     You can set the default value, or it is 0.0.
    * @js NA
    */
    double  getDoubleForKey(const char* pKey);
    /**
     * @js NA
     */
    double  getDoubleForKey(const char* pKey, double defaultValue);
    /**
    @brief Get string value by key, if the key doesn't exist, a default value will return.
    You can set the default value, or it is "".
    * @js NA
    */
    std::string getStringForKey(const char* pKey);
    /**
     * @js NA
     */
    std::string getStringForKey(const char* pKey, const std::string & defaultValue);
    /**
     @brief Get binary data value by key, if the key doesn't exist, a default value will return.
     You can set the default value, or it is null.
     * @js NA
     * @lua NA
     */
    Data getDataForKey(const char* pKey);
    /**
     * @js NA
     * @lua NA
     */
    Data getDataForKey(const char* pKey, const Data& defaultValue);

    // set value methods

    /**
     @brief Set bool value by key.
     * @js NA
     */
    void    setBoolForKey(const char* pKey, bool value);
    /**
     @brief Set integer value by key.
     * @js NA
     */
    void    setIntegerForKey(const char* pKey, int value);
    /**
     @brief Set float value by key.
     * @js NA
     */
    void    setFloatForKey(const char* pKey, float value);
    /**
     @brief Set double value by key.
     * @js NA
     */
    void    setDoubleForKey(const char* pKey, double value);
    /**
     @brief Set string value by key.
     * @js NA
     */
    void    setStringForKey(const char* pKey, const std::string & value);
    /**
     @brief Set binary data value by key.
     * @js NA
     * @lua NA
     */
    void    setDataForKey(const char* pKey, const Data& value);
    /**
     @brief Save content to xml file
     * @js NA
     */
    void    flush();

    /** returns the singleton 
     * @js NA
     * @lua NA
     */
    static UserDefault* getInstance();
    /**
     * @js NA
     */
    static void destroyInstance();

    /** deprecated. Use getInstace() instead 
     * @js NA
     * @lua NA
     */
    CC_DEPRECATED_ATTRIBUTE static UserDefault* sharedUserDefault();
    /**
     * @js NA
     */
    CC_DEPRECATED_ATTRIBUTE static void purgeSharedUserDefault();
    /**
     * @js NA
     */
    const static std::string& getXMLFilePath();
    /**
     * @js NA
     */
    static bool isXMLFileExist();

private:
    UserDefault();
    ~UserDefault();
    
    static bool createXMLFile();
    static void initXMLFilePath();
    
    static UserDefault* _userDefault;
    static std::string _filePath;
    static bool _isFilePathInitialized;
};

// end of data_storage group
/// @}

NS_CC_END

#endif // __SUPPORT_CCUSERDEFAULT_H__