forked from extern/egroupware
569 lines
14 KiB
JavaScript
569 lines
14 KiB
JavaScript
/**
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* eGroupWare API: JSON - Contains the client side javascript implementation of class.egw_json.inc.php
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*
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* @link http://www.egroupware.org
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package api
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* @subpackage ajax
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* @author Andreas Stoeckel <as@stylite.de>
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* @version $Id$
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*/
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/* The egw_json_request is the javaScript side implementation of class.egw_json.inc.php.*/
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function _egw_json_escape_string(input)
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{
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var len = input.length;
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var res = "";
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for (var i = 0; i < len; i++)
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{
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switch (input.charAt(i))
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{
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case '"':
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res += '\\"';
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break;
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case '\n':
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res += '\\n';
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break;
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case '\r':
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res += '\\r';
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break;
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case '\\':
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res += '\\\\';
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break;
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case '\/':
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res += '\\/';
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break;
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case '\b':
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res += '\\b';
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break;
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case '\f':
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res += '\\f';
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break;
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case '\t':
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res += '\\t';
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break;
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default:
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res += input.charAt(i);
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}
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}
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return res;
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}
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function _egw_json_encode_simple(input)
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{
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switch (input.constructor)
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{
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case String:
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return '"' + _egw_json_escape_string(input) + '"';
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case Number:
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return input.toString();
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case Boolean:
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return input ? 'true' : 'false';
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default:
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return null;
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}
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}
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function egw_json_encode(input)
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{
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if (!input) return 'null';
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var simple_res = _egw_json_encode_simple(input);
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if (simple_res == null)
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{
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switch (input.constructor)
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{
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case Array:
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var buf = [];
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for (var k in input)
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{
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//Filter the remove function, which is added to arrays in egw_fw_classes
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if (k != 'remove')
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buf.push(egw_json_encode(input[k]));
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}
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return '[' + buf.join(',') + ']';
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case Object:
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var buf = [];
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for (var k in input)
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{
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buf.push(_egw_json_encode_simple(k) + ':' + egw_json_encode(input[k]));
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}
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return '{' + buf.join(',') + '}';
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default:
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return 'null';
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}
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}
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else
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{
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return simple_res;
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}
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}
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/**
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* Some variables needed to store which JS and CSS files have already be included
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*/
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var egw_json_files = {};
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/** The constructor of the egw_json_request class.
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* @param string _menuaction the menuaction function which should be called and which handles the actual request
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* @param array _parameters which should be passed to the menuaction function.
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*/
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function egw_json_request(_menuaction, _parameters, _context)
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{
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//Copy the supplied parameters
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this.menuaction = _menuaction;
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this.context = window.document;
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if (typeof _context != 'undefined')
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this.context = _context;
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if (typeof _parameters != 'undefined')
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{
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this.parameters = _parameters;
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}
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else
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{
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this.parameters = new Array;
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}
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var url = window.egw_webserverUrl;
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// Search up to parent if the current window is in a frame
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if(typeof url == "undefined")
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{
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url = top.egw_webserverUrl;
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}
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this.url = url + '/json.php';
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this.sender = null;
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this.callback = null;
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this.alertHandler = this.alertFunc;
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if (window.egw_alertHandler)
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{
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this.alertHandler = window.egw_alertHandler;
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}
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}
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/* Sends the AJAX JSON request.
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* @param boolean _async specifies whether the request should be handeled asynchronously (true, the sendRequest function immediately returns to the caller) or asynchronously (false, the sendRequest function waits until the request is received)
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* @param _callback is an additional callback function which should be called upon a "data" response is received
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* @param _sender is the reference object the callback function should get
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*/
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egw_json_request.prototype.sendRequest = function(_async, _callback, _sender)
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{
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//Store the sender and callback parameter inside this class
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this.sender = _sender;
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if (typeof _callback != "undefined")
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this.callback = _callback;
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//Copy the async parameter which defaults to "true"
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var is_async = true;
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if (typeof _async != "undefined")
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is_async = _async;
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//Assemble the actual request object containing the json data string
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var request_obj = {
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"json_data": egw_json_encode(
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{
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"request": {
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"parameters": this.parameters
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}
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})
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}
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//Send the request via the jquery AJAX interface to the server
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$.ajax({url: this.url + '?menuaction=' + this.menuaction,
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async: is_async,
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context: this,
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data: request_obj,
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dataType: 'json',
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type: 'POST',
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success: this.handleResponse,
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error: function(_xmlhttp,_err) { alert('Ajax request to '+this.url+'?menuaction='+this.menuaction+' failed: '+_err); }
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});
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}
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egw_json_request.prototype.alertFunc = function(_message, _details)
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{
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alert(_message);
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}
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function _egw_json_debug_log(_msg, _e)
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{
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if (typeof console != "undefined" && typeof console.log != "undefined")
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{
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console.log(_msg, _e);
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}
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}
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/* Displays an json error message */
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egw_json_request.prototype.jsonError = function(_msg, _e)
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{
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var msg = 'EGW JSON Error: '._msg;
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//Log and show the error message
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_egw_json_bebug_log(msg, _e);
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this.alertHandler(msg);
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}
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/* Internal function which handles the response from the server */
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egw_json_request.prototype.handleResponse = function(data, textStatus, XMLHttpRequest)
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{
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if (data && data.response)
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{
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var hasResponse = false;
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for (var i = 0; i < data.response.length; i++)
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{
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try
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{
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var res = data.response[i];
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switch (data.response[i].type)
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{
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case 'alert':
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//Check whether all needed parameters have been passed and call the alertHandler function
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if ((typeof res.data.message != 'undefined') &&
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(typeof res.data.details != 'undefined'))
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{
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this.alertHandler(
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res.data.message,
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res.data.details)
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hasResponse = true;
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} else
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throw 'Invalid parameters';
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break;
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case 'assign':
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//Check whether all needed parameters have been passed and call the alertHandler function
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if ((typeof res.data.id != 'undefined') &&
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(typeof res.data.key != 'undefined') &&
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(typeof res.data.value != 'undefined'))
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{
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var obj = document.getElementById(res.data.id);
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if (obj)
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{
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obj[res.data.key] = res.data.value;
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hasResponse = true;
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}
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} else
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throw 'Invalid parameters';
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break;
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case 'data':
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//Callback the caller in order to allow him to handle the data
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if (this.callback)
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{
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this.callback.call(this.sender, res.data);
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hasResponse = true;
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}
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break;
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case 'script':
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if (typeof res.data == 'string')
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{
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try
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{
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var func = function() {eval(res.data);};
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func.call(window);
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}
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catch (e)
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{
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e.code = res.data;
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_egw_json_debug_log(e);
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}
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hasResponse = true;
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} else
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throw 'Invalid parameters';
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break;
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case 'jquery':
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if (typeof res.data.select == 'string' &&
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typeof res.data.func == 'string')
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{
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try
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{
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var jQueryObject = $(res.data.select, this.context);
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jQueryObject[res.data.func].apply(jQueryObject, res.data.parms);
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}
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catch (e)
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{
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_egw_json_debug_log(e);
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}
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hasResponse = true;
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} else
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throw 'Invalid parameters';
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break;
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case 'redirect':
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if (typeof res.data.url == 'string' &&
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typeof res.data.global == 'boolean')
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{
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//Special handling for framework reload
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if (res.data.url.indexOf("?cd=10") > 0)
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res.data.global = true;
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if (res.data.global)
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{
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egw_topWindow().location.href = res.data.url;
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}
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else
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{
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window.location.href = res.data.url;
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}
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hasResponse = true;
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} else
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throw 'Invalid parameters';
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break;
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case 'css':
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if (typeof res.data == 'string')
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{
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//Check whether the requested file had already be included
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if (!egw_json_files[res.data])
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{
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egw_json_files[res.data] = true;
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//Get the head node and append a new link node with the stylesheet url to it
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var headID = document.getElementsByTagName('head')[0];
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var cssnode = document.createElement('link');
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cssnode.type = "text/css";
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cssnode.rel = "stylesheet";
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cssnode.href = res.data;
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headID.appendChild(cssnode);
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}
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hasResponse = true;
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} else
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throw 'Invalid parameters';
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break;
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case 'js':
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if (typeof res.data == 'string')
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{
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//Check whether the requested file had already be included
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if (!egw_json_files[res.data])
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{
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egw_json_files[res.data] = true;
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//Get the head node and append a new script node with the js file to it
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var headID = document.getElementsByTagName('head')[0];
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var scriptnode = document.createElement('script');
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scriptnode.type = "text/javascript";
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scriptnode.src = res.data;
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headID.appendChild(scriptnode);
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}
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hasResponse = true;
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} else
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throw 'Invalid parameters';
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break;
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case 'error':
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if (typeof res.data == 'string')
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{
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this.jsonError(res.data);
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hasResponse = true;
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} else
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throw 'Invalid parameters';
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break;
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}
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} catch(e) {
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this.jsonError('Internal JSON handler error', e);
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}
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}
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/* If no explicit response has been specified, call the callback (if one was set) */
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if (!hasResponse && this.callback)
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{
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this.callback.call(this.sender, data.response[i].data);
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}
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}
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}
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function egw_json_getFormValues(_form, _filterClass)
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{
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var elem = null;
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if (typeof _form == 'object')
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{
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elem = _form;
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}
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else
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{
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elem = document.getElementsByName(_form)[0];
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}
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var serialized = new Object;
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if (typeof elem != "undefined" && elem && elem.childNodes)
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{
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if (typeof _filterClass == 'undefined')
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_filterClass = null;
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_egw_json_getFormValues(serialized, elem.childNodes, _filterClass)
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}
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return serialized;
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}
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/**
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* Deprecated legacy xajax wrapper functions for the new egw_json interface
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*/
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_xajax_doXMLHTTP = function(_async, _menuaction, _arguments)
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{
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/* Assemble the parameter array */
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var paramarray = new Array();
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for (var i = 1; i < _arguments.length; i++)
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{
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paramarray[paramarray.length] = _arguments[i];
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}
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/* Create a new request, passing the menuaction and the parameter array */
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var request = new egw_json_request(_menuaction, paramarray);
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/* Send the request */
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request.sendRequest(_async);
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return request;
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}
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xajax_doXMLHTTP = function(_menuaction)
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{
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return _xajax_doXMLHTTP(true, _menuaction, arguments);
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}
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xajax_doXMLHTTPsync = function(_menuaction)
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{
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return _xajax_doXMLHTTP(false, _menuaction, arguments);
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};
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window.xajax = {
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"getFormValues": function(_form)
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{
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return egw_json_getFormValues(_form);
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}
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};
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/*
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The following code is adapted from the xajax project which is licensed under
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the following license
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@copyright Copyright (c) 2005-2007 by Jared White & J. Max Wilson
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@copyright Copyright (c) 2008-2009 by Joseph Woolley, Steffen Konerow, Jared White & J. Max Wilson
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@license http://www.xajaxproject.org/bsd_license.txt BSD License
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*/
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/**
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* used internally by the legacy "egw_json_response.getFormValues" to recursively
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* run over all form elements
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* @param serialized is the object which will contain the form data
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* @param children is the children node of the form we're runing over
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* @param string _filterClass if given only return
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*/
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function _egw_json_getFormValues(serialized, children, _filterClass)
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{
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//alert('_egw_json_getFormValues(,,'+_filterClass+')');
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for (var i = 0; i < children.length; ++i) {
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var child = children[i];
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if (typeof child.childNodes != "undefined")
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_egw_json_getFormValues(serialized, child.childNodes, _filterClass);
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if ((!_filterClass || $(child).hasClass(_filterClass)) && typeof child.name != "undefined")
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{
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//alert('_egw_json_getFormValues(,,'+_filterClass+') calling _egw_json_getFormValue for name='+child.name+', class='+child.class+', value='+child.value);
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_egw_json_getFormValue(serialized, child);
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}
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}
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}
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function _egw_json_getObjectLength(_obj)
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{
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var res = 0;
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for (key in _obj)
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{
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if (_obj.hasOwnProperty(key))
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res++;
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}
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return res;
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}
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/**
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* used internally to serialize
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*/
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function _egw_json_getFormValue(serialized, child)
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{
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//Return if the child doesn't have a name, is disabled, or is a radio-/checkbox and not checked
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if ((typeof child.name == "undefined") || (child.disabled && child.disabled == true) ||
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(child.type && (child.type == 'radio' || child.type == 'checkbox') && (!child.checked)))
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{
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return;
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}
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var name = child.name;
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var values = null;
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if ('select-multiple' == child.type)
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{
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values = new Array;
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for (var j = 0; j < child.length; ++j)
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{
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var option = child.options[j];
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if (option.selected == true)
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values.push(option.value);
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}
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}
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else
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{
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values = child.value;
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}
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//Special treatment if the name of the child contains a [] - then all theese
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//values are added to an array.
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var keyBegin = name.indexOf('[');
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if (0 <= keyBegin) {
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var n = name;
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var k = n.substr(0, n.indexOf('['));
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var a = n.substr(n.indexOf('['));
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if (typeof serialized[k] == 'undefined')
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serialized[k] = new Object;
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var p = serialized; // pointer reset
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while (a.length != 0) {
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var sa = a.substr(0, a.indexOf(']')+1);
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var lk = k; //save last key
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var lp = p; //save last pointer
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a = a.substr(a.indexOf(']')+1);
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p = p[k];
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k = sa.substr(1, sa.length-2);
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if (k == '') {
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if ('select-multiple' == child.type) {
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k = lk; //restore last key
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p = lp;
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} else {
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k = _egw_json_getObjectLength(p);
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}
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}
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if (typeof p[k] == 'undefined')
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{
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p[k] = new Object;
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}
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}
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p[k] = values;
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} else {
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//Add the value to the result object with the given name
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if (typeof values != "undefined")
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{
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serialized[name] = values;
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}
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}
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}
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