axmol/cocos/base/CCUserDefault.h

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

http://www.cocos2d-x.org

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#ifndef __SUPPORT_CCUSERDEFAULT_H__
#define __SUPPORT_CCUSERDEFAULT_H__

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

/**
 * @addtogroup base
 * @{
 */
NS_CC_BEGIN


/**
 * 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

    /**
     * Get bool value by key, if the key doesn't exist, will return false.
     * You can set the default value, or it is false.
     * @param key The key to get value.
     * @return Bool value by `key`.
     * @js NA
     */
    bool    getBoolForKey(const char* key);
    
    /**
     * Get bool value by key, if the key doesn't exist, will return passed default value.
     * @param key The key to get value.
     * @param defaultValue The default value to return if the key doesn't exist.
     * @js NA
     */
    bool    getBoolForKey(const char* key, bool defaultValue);
    
    /**
     * Get integer value by key, if the key doesn't exist, will return 0.
     * You can set the default value, or it is 0.
     * @param key The key to get value.
     * @return Integer value of the key.
     * @js NA
     */
    int     getIntegerForKey(const char* key);
    
    /**
     * Get bool value by key, if the key doesn't exist, will return passed default value.
     * @param key The key to get value.
     * @param defaultValue The default value to return if the key doesn't exist.
     * @return Integer value of the key.
     * @js NA
     */
    int     getIntegerForKey(const char* key, int defaultValue);
    
    /**
     * Get float value by key, if the key doesn't exist, will return 0.0.
     * @param key The key to get value.
     * @return Float value of the key.
     * @js NA
     */
    float    getFloatForKey(const char* key);
    
    /**
     * Get float value by key, if the key doesn't exist, will return passed default value.
     * @param key The key to get value.
     * @param defaultValue The default value to return if the key doesn't exist.
     * @return Float value of the key.
     * @js NA
     */
    float    getFloatForKey(const char* key, float defaultValue);
    
    /**
     * Get double value by key, if the key doesn't exist, will return 0.0.
     * @param key The key to get value.
     * @return Double value of the key.
     * @js NA
     */
    double  getDoubleForKey(const char* key);
    
    /**
     * Get double value by key, if the key doesn't exist, will return passed default value.
     * @param key The key to get value.
     * @param defaultValue The default value to return if the key doesn't exist.
     * @return Double value of the key.
     * @js NA
     */
    double  getDoubleForKey(const char* key, double defaultValue);
    
    /**
     * Get string value by key, if the key doesn't exist, will return an empty string.
     * @param key The key to get value.
     * @return String value of the key.
     * @js NA
     */
    std::string getStringForKey(const char* key);
    
    /**
     * Get string value by key, if the key doesn't exist, will return passed default value.
     * @param key The key to get value.
     * @param defaultValue The default value to return if the key doesn't exist.
     * @return String value of the key.
     * @js NA
     */
    std::string getStringForKey(const char* key, const std::string & defaultValue);
    
    /**
     * Get Data value by key, if the key doesn't exist, will return an empty Data.
     * @param key The key to get value.
     * @return Data value of the key.
     * @js NA
     */
    Data getDataForKey(const char* key);
    
    /**
     * Get Data value by key, if the key doesn't exist, will return an empty Data.
     * @param key The key to get value.
     * @param defaultValue The default value to return if the key doesn't exist.
     * @return Data value of the key.
     * @js NA
     */
    Data getDataForKey(const char* key, const Data& defaultValue);

    // set value methods

    /**
     * Set bool value by key.
     * @param key The key to set.
     * @param value A bool value to set to the key.
     * @js NA
     */
    void    setBoolForKey(const char* key, bool value);
    /**
     * Set integer value by key.
     * @param key The key to set.
     * @param value A integer value to set to the key.
     * @js NA
     */
    void    setIntegerForKey(const char* key, int value);
    /**
     * Set float value by key.
     * @param key The key to set.
     * @param value A float value to set to the key.
     * @js NA
     */
    void    setFloatForKey(const char* key, float value);
    /**
     * Set double value by key.
     * @param key The key to set.
     * @param value A double value to set to the key.
     * @js NA
     */
    void    setDoubleForKey(const char* key, double value);
    /**
     * Set string value by key.
     * @param key The key to set.
     * @param value A string value to set to the key.
     * @js NA
     */
    void    setStringForKey(const char* key, const std::string & value);
    /**
     * Set Data value by key.
     * @param key The key to set.
     * @param value A Data value to set to the key.
     * @js NA
     */
    void    setDataForKey(const char* key, const Data& value);
    /**
     * You should invoke this function to save values set by setXXXForKey().
     * @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();
    /**@deprecated Use destroyInstance() instead.
     * @js NA
     */
    CC_DEPRECATED_ATTRIBUTE static void purgeSharedUserDefault();
    /** All supported platforms other iOS & Android use xml file to save values. This function is return the file path of the xml path.
     * @js NA
     */
    static const std::string& getXMLFilePath();
    /** All supported platforms other iOS & Android use xml file to save values. This function checks whether the xml file exists or not.
     * @return True if the xml file exists, flase if not.
     * @js NA
     */
    static bool isXMLFileExist();

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


NS_CC_END
// end of base group
/** @} */

#endif // __SUPPORT_CCUSERDEFAULT_H__