source: trunk/phpgwapi/js/tools/xobject.js @ 2561

(function( )
{
        Object.prototype.extend = function( )
        {
                for ( i = 0; i < arguments.length; i++ )
                {
                        if ( typeof arguments[ i ] != 'object' || arguments[ i ] === null )
                                continue;

                        var obj = /(\w+)\(/.exec( arguments[ i ].constructor.toString( ) )[ 1 ];
                        for ( var property in arguments[ i ] )
                        {
                                if ( ! ( this[ property ] ) )
                                        this[ property ] = arguments[ i ][ property ];

                                this[ '$' + obj + '$' + property ] = arguments[ i ][ property ];
                        }
                }
        };

        function f( n )
        {
                return n < 10 ? '0' + n : n;
        }

        Date.prototype.toJSON = function( key )
        {
                return isFinite( this.valueOf( ) ) ?
                this.getUTCFullYear( ) + '-' +
                f( this.getUTCMonth( ) + 1) + '-' +
                f( this.getUTCDate( ) ) + 'T' +
                f( this.getUTCHours( ) ) + ':' +
                f( this.getUTCMinutes( ) ) + ':' +
                f( this.getUTCSeconds( ) ) + 'Z' : null;
        };

        String.prototype.toJSON =
        Number.prototype.toJSON =
        Boolean.prototype.toJSON = function( key )
        {
                return this.valueOf( );
        };

        var cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
                escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
                gap,
                indent,
                meta = {
                        '\b': '\\b',
                        '\t': '\\t',
                        '\n': '\\n',
                        '\f': '\\f',
                        '\r': '\\r',
                        '"' : '\\"',
                        '\\': '\\\\'
                },
                rep;


        function quote( string )
        {
                escapable.lastIndex = 0;
                return escapable.test(string) ?
                        '"' + string.replace(escapable, function (a)
                                        {
                                        var c = meta[a];
                                        return typeof c === 'string' ? c :
                                        '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
                                        }) + '"' :
                '"' + string + '"';
        }

        function str( key, holder )
        {
                var i,
                        k,
                        v,
                        length,
                        mind = gap,
                        partial,
                        value = holder[ key ];

                if ( value && typeof value === 'object' && typeof value.toJSON === 'function' )
                        value = value.toJSON( key );

                if ( typeof rep === 'function' )
                        value = rep.call( holder, key, value );

                switch ( typeof value )
                {
                        case 'string':
                                return quote(value);
                        case 'number':
                                return isFinite(value) ? String(value) : 'null';
                        case 'boolean':
                        case 'null':
                                return String(value);
                        case 'object':
                                if ( ! value )
                                        return 'null';

                                gap += indent;
                                partial = [ ];

                                if ( Object.prototype.toString.apply( value ) === '[object Array]' )
                                {
                                        length = value.length;
                                        for ( i = 0; i < length; i += 1 )
                                                partial[i] = str( i, value ) || 'null';

                                        v = partial.length === 0 ? '[]' :
                                                gap ? '[\n' + gap +
                                                partial.join( ',\n' + gap ) + '\n' +
                                                mind + ']' :
                                                '[' + partial.join( ',' ) + ']';

                                        gap = mind;
                                        return v;
                                }

                                if ( rep && typeof rep === 'object' )
                                {
                                        length = rep.length;
                                        for ( i = 0; i < length; i += 1 )
                                        {
                                                k = rep[ i ];
                                                if ( typeof k === 'string' )
                                                {
                                                        v = str( k, value );

                                                        if ( v )
                                                                partial.push( quote( k ) + ( gap ? ': ' : ':' ) + v );
                                                }
                                        }
                                }
                                else
                                {
                                        for ( k in value )
                                                if ( Object.hasOwnProperty.call( value, k ) )
                                                {
                                                        v = str( k, value );
                                                        if ( v )
                                                                partial.push( quote( k ) + ( gap ? ': ' : ':' ) + v );
                                                }
                                }

                                v = partial.length === 0 ? '{}' :
                                        gap ? '{\n' + gap + partial.join( ',\n' + gap ) + '\n' +
                                                mind + '}' : '{' + partial.join( ',' ) + '}';
                                        gap = mind;
                                                return v;
                }
        }

        function stringify( replacer, space )
        {
                var i;
                gap = '';
                indent = '';

                if ( typeof space === 'number' )
                        for ( i = 0; i < space; i += 1 )
                                indent += ' ';
                else if ( typeof space === 'string' )
                        indent = space;

                rep = replacer;
                if ( replacer && typeof replacer !== 'function'
                                && ( typeof replacer !== 'object'
                                        || typeof replacer.length !== 'number' ) )
                {
                        throw new Error( 'JSON.stringify' );
                }

                return str( '', { '': this } );
        }

        function parse( reviver )
        {
                var j;

                function walk( holder, key )
                {
                        var k, v, value = holder[ key ];
                        if ( value && typeof value === 'object' )
                        {
                                for ( k in value )
                                        if ( Object.hasOwnProperty.call( value, k ) )
                                        {
                                                v = walk( value, k );
                                                if ( v !== undefined )
                                                        value[ k ] = v;
                                                else
                                                        delete value[ k ];
                                        }
                        }
                        return reviver.call( holder, key, value );
                }

                cx.lastIndex = 0;
                if ( cx.test( this ) )
                {
                        this.replace( cx, function( a )
                        {
                                return '\\u' + ( '0000' + a.charCodeAt( 0 ).toString( 16 ) ).slice( -4 );
                        });
                }

                if ( /^[\],:{}\s]*$/.
                                test( this.replace( /\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, '@' ).
                                        replace( /"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']' ).
                                        replace( /(?:^|:|,)(?:\s*\[)+/g, '' ) ) )
                {
                        j = eval( '(' + this + ')' );

                        return typeof reviver === 'function' ?
                                walk( { '': j }, '' ) : j;
                }

                throw new SyntaxError( 'JSON.parse' );
        }

        function JSON( )
        {
                if ( this.constructor === String )
                        return parse.call( this );
                else
                        return stringify.call( this );
        }

        Object.prototype.JSON = JSON;
        String.prototype.JSON = JSON;
}( ) );