/**
 * @copyright Rapidshare AG, 2008
 * www.rapidshare.com
 * @author Laurentiu Nat & saso nikolov
 * History: 13.04.2009 - dbogatz:   Möglichkeit von Synchronen Aufrufen hinzugefügt.
 * ab 2009: saso nikolov ständige optimierungen 
 * 
 * Beispiel: 
 *   RSAjax({
            url:'ttt.php',
            method:'POST',
            //textXML:'text',
            str:'arg=123&bbb=654',          
            onSuccess: function(h){
                alert(h.responseText)
            },
            onLoading: function(){
                document.getElementById('display').style.display=""
            },
            asynchron: false
        });
        
        basicAuthUser
        basicAuthPassword
 */
function ajax_geladen(){return true;}
function RSAjax(obj){
    var a=new RS__Ajax();
    a.ladeParameter(obj);
    return RS__getAjax(a);
}
function RS__Ajax(){
    this.method = 'GET';
    this.onLoading = function(){};
    this.onSuccess = function() { };
    this.onError = function() { alert("ERROR in " + this.url) };
    this.url = null;
    this.str = null;
    this.response = null;
    this.textXML = 'text';
    this.hatLoading=false;
    this.hatSuccess=false;
    this.istAsynchron   =   true;   //  default asynchroner Request
    this.sendFirstForm = false; // if str is empty
    this.xmlHttp = null;
    this.basicAuth = ''; // base64

    this.ladeParameter = function(obj){
        this.method = (typeof obj.method != "undefined" || obj.method == 'POST') ? obj.method : 'GET';
        if (typeof obj.url != "undefined") {
                this.url = obj.url;
        }
        else
            alert('Bitte url eingeben');
        
        if(obj.asynchron==false)    {
            this.istAsynchron   =   false;
        }
        
        if(typeof obj.onSuccess =="function"){
            this.onSuccess=obj.onSuccess;
            this.hatSuccess=true;
        }

        if (typeof obj.onLoading == "function") {
            this.onLoading = obj.onLoading;
            this.hatLoading=true;
        }

        if (typeof obj.textXML == "undefined" || (obj.textXML != 'text' && obj.textXML != 'xml'))
            this.textXML = 'text';
        else
            this.textXML = obj.textXML;

        if (typeof obj.str != "undefined")
            this.str = obj.str;
        else if (obj.sendFirstForm) {
            // welche methode wird verwendet? post or get, diese noch einstelln
            var array = new Array();
            var ff = document.forms[0];
            for (var i = 0; i < ff.length; i++) {
                try {
                    if (ff[i].value)
                        array[array.length] = ff.name + '=' + ff[i].value;
                }
                catch (e) {
                }
            }
            this.str = array.join('&');
        }
        if (typeof obj.basicAuthUser != "undefined" && typeof obj.basicAuthPassword != "undefined") {
        	this.basicAuth = Base64.encode(obj.basicAuthUser+":"+obj.basicAuthPassword);
		}
        	
    }
}
function RS__getAjax(ob, async_request) {
    if (typeof XMLHttpRequest != 'undefined') { ob.xmlHttp = new XMLHttpRequest(); }
    if (!ob.xmlHttp) {
        try { ob.xmlHttp = new ActiveXObject("Msxml2.XMLHTTP"); }
        catch (e) {
            try { ob.xmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); }
            catch (e) { ob.xmlHttp = null; }
        }
    }
    if (ob.xmlHttp == null) {
        alert('Es ist ein Verbindungsproblem aufgetreten. Bitte versuchen Sie es erneut....');
        return;
    }
    if (ob.xmlHttp) {
        if (ob.method == "GET") {
            if (ob.str) {
                ob.str = ob.str.replace(/^\s+|\s+$/g, '');
                if (ob.str != "") {
                    if (ob.url.indexOf("?") == -1) {
                        ob.url += "?";
                    } else if (ob.url[ob.url.length - 1] != "&") {
                        ob.url += "&";
                    }
                    if (ob.str.substr(0, 1) == "&")
                        ob.str = ob.str.substr(1);
                    ob.url += ob.str;
                }
                ob.str = null;
            }
        } else {
            // prüfe ob in der URL parameter enthalten sind
            // diese dann an die str hängen
            if (ob.url.indexOf("?") != -1) {
                var pos = ob.url.indexOf("?");
                var sstr = ob.url.substr(pos + 1);
                ob.url = ob.url.substr(0, pos);
                if (ob.str)
                    ob.str += "&";
                else
                	ob.str = "";
                ob.str += sstr;
            }
        }
        try {
            ob.xmlHttp.open(ob.method, ob.url, ob.istAsynchron);
        } catch (e) {
            ob.onError();
            return false;
        }
        //  onreadystatechange nur notwendig wenn ein asynchroner request gestartet wurde:
        if (ob.istAsynchron)
        {
            ob.xmlHttp.onreadystatechange = function() {
                if (ob.xmlHttp.readyState == 2 && ob.hatLoading) {
                    ob.onLoading();
                }
                if (ob.xmlHttp.readyState == 4) {
                    if (ob.hatSuccess) {
                        ob.onSuccess(ob.xmlHttp)
                    }
                }
            }
        }                
		if (ob.basicAuth != "")
    		ob.xmlHttp.setRequestHeader('Authorization', "Basic "+ob.basicAuth);
        if (ob.method == "POST")
            ob.xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
        ob.xmlHttp.send(ob.str);
        //  Bei Synchronen Requests haben wir das Ergebnis gleich hier:
        if(!ob.istAsynchron)
        {
            if (ob.xmlHttp.readyState == 4) {
                if (ob.hatSuccess) {
                    return ob.onSuccess(ob.xmlHttp)
                }
                else return ob.xmlHttp;
            }
        }
    }
}
/**
*
*  Base64 encode / decode
*  http://www.webtoolkit.info/
*
**/
 
var Base64 = {
 
	// private property
	_keyStr : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
 
	// public method for encoding
	encode : function (input) {
		var output = "";
		var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
		var i = 0;
 
		input = Base64._utf8_encode(input);
 
		while (i < input.length) {
 
			chr1 = input.charCodeAt(i++);
			chr2 = input.charCodeAt(i++);
			chr3 = input.charCodeAt(i++);
 
			enc1 = chr1 >> 2;
			enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
			enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
			enc4 = chr3 & 63;
 
			if (isNaN(chr2)) {
				enc3 = enc4 = 64;
			} else if (isNaN(chr3)) {
				enc4 = 64;
			}
 
			output = output +
			this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) +
			this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4);
 
		}
 
		return output;
	},
 
	// public method for decoding
	decode : function (input) {
		var output = "";
		var chr1, chr2, chr3;
		var enc1, enc2, enc3, enc4;
		var i = 0;
 
		input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
 
		while (i < input.length) {
 
			enc1 = this._keyStr.indexOf(input.charAt(i++));
			enc2 = this._keyStr.indexOf(input.charAt(i++));
			enc3 = this._keyStr.indexOf(input.charAt(i++));
			enc4 = this._keyStr.indexOf(input.charAt(i++));
 
			chr1 = (enc1 << 2) | (enc2 >> 4);
			chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
			chr3 = ((enc3 & 3) << 6) | enc4;
 
			output = output + String.fromCharCode(chr1);
 
			if (enc3 != 64) {
				output = output + String.fromCharCode(chr2);
			}
			if (enc4 != 64) {
				output = output + String.fromCharCode(chr3);
			}
 
		}
 
		output = Base64._utf8_decode(output);
 
		return output;
 
	},
 
	// private method for UTF-8 encoding
	_utf8_encode : function (string) {
		string = string.replace(/\r\n/g,"\n");
		var utftext = "";
 
		for (var n = 0; n < string.length; n++) {
 
			var c = string.charCodeAt(n);
 
			if (c < 128) {
				utftext += String.fromCharCode(c);
			}
			else if((c > 127) && (c < 2048)) {
				utftext += String.fromCharCode((c >> 6) | 192);
				utftext += String.fromCharCode((c & 63) | 128);
			}
			else {
				utftext += String.fromCharCode((c >> 12) | 224);
				utftext += String.fromCharCode(((c >> 6) & 63) | 128);
				utftext += String.fromCharCode((c & 63) | 128);
			}
 
		}
 
		return utftext;
	},
 
	// private method for UTF-8 decoding
	_utf8_decode : function (utftext) {
		var string = "";
		var i = 0;
		var c = c1 = c2 = 0;
 
		while ( i < utftext.length ) {
 
			c = utftext.charCodeAt(i);
 
			if (c < 128) {
				string += String.fromCharCode(c);
				i++;
			}
			else if((c > 191) && (c < 224)) {
				c2 = utftext.charCodeAt(i+1);
				string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
				i += 2;
			}
			else {
				c2 = utftext.charCodeAt(i+1);
				c3 = utftext.charCodeAt(i+2);
				string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
				i += 3;
			}
 
		}
 
		return string;
	}
 
}