mirror of
https://github.com/EGroupware/egroupware.git
synced 2024-12-30 10:39:18 +01:00
795 lines
19 KiB
JavaScript
795 lines
19 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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/*egw:uses
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jsapi.jsapi; // Contains some helper functions
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jquery.jquery; // Used for the ajax requests
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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 == null || !input && input.length == 0) 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 non numeric entries
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if (!isNaN(k))
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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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switch(typeof input)
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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 non numeric entries
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if (!isNaN(k))
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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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}
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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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/**
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* Initialize the egw_json_files object with all files which are already bound in
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*/
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$j(document).ready(function() {
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$j("script, link").each(function() {
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var file = false;
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if ($j(this).attr("src")) {
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file = $j(this).attr("src");
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} else if ($j(this).attr("href")) {
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file = $j(this).attr("href");
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}
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if (file) {
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egw_json_files[file] = true;
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}
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});
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});
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/**
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* Variable which stores all currently registered plugins
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*/
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var _egw_json_plugins = [];
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/**
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* Register a plugin for the egw_json handler
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*/
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function egw_json_register_plugin(_callback, _context)
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{
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//Default the context parameter to "window"
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if (typeof _context == 'undefined') {
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_context = window;
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}
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//Add a plugin object to the plugins array
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_egw_json_plugins[_egw_json_plugins.length] = {
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'callback': _callback,
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'context': _context
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};
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}
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/**
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* Function used internally to pass a response to all registered plugins
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*/
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function _egw_json_plugin_handle(_type, _response, _context) {
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for (var i = 0; i < _egw_json_plugins.length; i++)
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{
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try {
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var plugin = _egw_json_plugins[i];
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var context = plugin.context;
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if (!plugin.context && typeof _context != "undefined")
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{
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context = _context;
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}
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if (plugin.callback.call(context, _type, _response)) {
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return true;
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}
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} catch (e) {
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if (typeof console != 'undefined')
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{
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console.log(e);
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}
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}
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}
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return false;
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}
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/** The constructor of the egw_json_request class.
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*
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* @param string _menuaction the menuaction function which should be called and
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* which handles the actual request. If the menuaction is a full featured
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* url, this one will be used instead.
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* @param array _parameters which should be passed to the menuaction function.
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* @param object _context is the context which will be used for the callback function
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*/
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function egw_json_request(_menuaction, _parameters, _context)
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{
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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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// Check whether the supplied menuaction parameter is a full featured url
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// or just a menuaction
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if (_menuaction.match(/json.php\?menuaction=[a-z_0-9]*\.[a-z_0-9]*\.[a-z_0-9]*/i))
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{
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// Menuaction is a full featured url
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this.url = _menuaction;
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}
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else
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{
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// We only got a menu action, assemble the url manually.
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this.url = this._assembleAjaxUrl(_menuaction);
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}
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this.request = null;
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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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this.onLoadFinish = null;
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this.loadedJSFiles = {};
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this.handleResponseDone = false;
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this.app = null;
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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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/**
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* Sets the "application" object which is passed to egw_appWindowOpen when a redirect is done
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*/
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egw_json_request.prototype.setAppObject = function(_app)
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{
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this.app = _app;
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}
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egw_json_request.prototype._assembleAjaxUrl = function(_menuaction)
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{
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// Retrieve the webserver url
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var webserver_url = egw_topWindow().egw_webserverUrl;
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// Check whether the webserver_url is really set
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// Don't check for !webserver_url as it might be empty.
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// Thank you to Ingo Ratsdorf for reporting this.
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if (typeof webserver_url == "undefined")
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{
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throw "Internal JS error, top window not found, webserver url could not be retrieved.";
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}
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// Add the ajax relevant parts
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return webserver_url + '/json.php?menuaction=' + _menuaction;
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}
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/**
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* Sends the AJAX JSON request.
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*
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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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this.request = $j.ajax({url: this.url,
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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) { window.console.error('Ajax request to ' + this.url + ' failed: ' + _err); }
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});
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}
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egw_json_request.prototype.abort = function()
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{
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this.request.abort();
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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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if(_details) _egw_json_debug_log(_message, _details);
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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_debug_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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this.handleResponseDone = false;
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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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if (res.data.key == "innerHTML")
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{
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egw_insertJS(res.data.value);
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}
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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 = new Function(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 'apply':
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if (typeof res.data.func == 'string' && typeof window[res.data.func] == 'function')
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{
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try
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{
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window[res.data.func].apply(window, 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, {'Function': res.data.func, 'Parameters': res.data.parms});
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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 = $j(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, {'Function': res.data.func, 'Parameters': res.data.parms});
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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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//console.log(res.data.url);
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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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res.data.global |= (res.data.url.indexOf("?cd=10") > 0);
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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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egw_appWindowOpen(this.app, 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;
|
|
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;
|
|
|
|
//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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scriptnode._originalSrc = res.data;
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headID.appendChild(scriptnode);
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|
|
|
//Increment the includedJSFiles count
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|
this.loadedJSFiles[res.data] = false;
|
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|
|
if (typeof console != 'undefined' && typeof console.log != 'undefined')
|
|
console.log("Requested JS file '%s' from server", res.data);
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|
|
var self = this;
|
|
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|
//FF, Opera, Chrome
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|
scriptnode.onload = function(e) {
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|
var file = e.target._originalSrc;
|
|
if (typeof console != 'undefined' && typeof console.log != 'undefined')
|
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console.log("Retrieved JS file '%s' from server", file);
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|
self.loadedJSFiles[file] = true;
|
|
self.checkLoadFinish();
|
|
};
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|
|
//IE
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|
if (typeof scriptnode.readyState != 'undefined')
|
|
{
|
|
if (scriptnode.readyState != 'complete' &&
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scriptnode.readyState != 'loaded')
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{
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|
scriptnode.onreadystatechange = function() {
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var node = window.event.srcElement;
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if (node.readyState == 'complete' || node.readyState == 'loaded') {
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var file = node._originalSrc;
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if (typeof console != 'undefined' && typeof console.log != 'undefined')
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console.log("Retrieved JS file '%s' from server", [file]);
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|
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self.loadedJSFiles[file] = true;
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|
self.checkLoadFinish();
|
|
}
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|
};
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|
}
|
|
else
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|
{
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this.loadedJSFiles[res.data] = true;
|
|
}
|
|
}
|
|
}
|
|
hasResponse = true;
|
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} else
|
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throw 'Invalid parameters';
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break;
|
|
case 'error':
|
|
if (typeof res.data == 'string')
|
|
{
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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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|
|
//Try to handle the json response with all registered plugins
|
|
hasResponse |= _egw_json_plugin_handle(data.response[i].type, res, this.context);
|
|
} catch(e) {
|
|
this.jsonError('Internal JSON handler error', e);
|
|
}
|
|
}
|
|
|
|
/* If no explicit response has been specified, call the callback (if one was set) */
|
|
if (!hasResponse && this.callback && data.response[i])
|
|
{
|
|
this.callback.call(this.sender, data.response[i].data);
|
|
}
|
|
|
|
this.handleResponseDone = true;
|
|
|
|
this.checkLoadFinish();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* The "onLoadFinish" handler gets called after all JS-files have been loaded
|
|
* successfully
|
|
*/
|
|
egw_json_request.prototype.checkLoadFinish = function()
|
|
{
|
|
var complete = true;
|
|
for (var key in this.loadedJSFiles) {
|
|
complete = complete && this.loadedJSFiles[key];
|
|
}
|
|
|
|
if (complete && this.onLoadFinish && this.handleResponseDone)
|
|
{
|
|
this.onLoadFinish.call(this.sender);
|
|
}
|
|
}
|
|
|
|
function egw_json_getFormValues(_form, _filterClass)
|
|
{
|
|
var elem = null;
|
|
if (typeof _form == 'object')
|
|
{
|
|
elem = _form;
|
|
}
|
|
else
|
|
{
|
|
elem = document.getElementsByName(_form)[0];
|
|
}
|
|
|
|
var serialized = new Object;
|
|
if (typeof elem != "undefined" && elem && elem.childNodes)
|
|
{
|
|
if (typeof _filterClass == 'undefined')
|
|
_filterClass = null;
|
|
|
|
_egw_json_getFormValues(serialized, elem.childNodes, _filterClass)
|
|
}
|
|
|
|
return serialized;
|
|
}
|
|
|
|
/**
|
|
* Deprecated legacy xajax wrapper functions for the new egw_json interface
|
|
*/
|
|
_xajax_doXMLHTTP = function(_async, _menuaction, _arguments)
|
|
{
|
|
/* Assemble the parameter array */
|
|
var paramarray = new Array();
|
|
for (var i = 1; i < _arguments.length; i++)
|
|
{
|
|
paramarray[paramarray.length] = _arguments[i];
|
|
}
|
|
|
|
/* Create a new request, passing the menuaction and the parameter array */
|
|
var request = new egw_json_request(_menuaction, paramarray);
|
|
|
|
/* Send the request */
|
|
request.sendRequest(_async);
|
|
|
|
return request;
|
|
}
|
|
|
|
xajax_doXMLHTTP = function(_menuaction)
|
|
{
|
|
return _xajax_doXMLHTTP(true, _menuaction, arguments);
|
|
}
|
|
|
|
xajax_doXMLHTTPsync = function(_menuaction)
|
|
{
|
|
return _xajax_doXMLHTTP(false, _menuaction, arguments);
|
|
};
|
|
|
|
window.xajax = {
|
|
"getFormValues": function(_form)
|
|
{
|
|
return egw_json_getFormValues(_form);
|
|
}
|
|
};
|
|
|
|
/*
|
|
The following code is adapted from the xajax project which is licensed under
|
|
the following license
|
|
@copyright Copyright (c) 2005-2007 by Jared White & J. Max Wilson
|
|
@copyright Copyright (c) 2008-2009 by Joseph Woolley, Steffen Konerow, Jared White & J. Max Wilson
|
|
@license http://www.xajaxproject.org/bsd_license.txt BSD License
|
|
*/
|
|
|
|
/**
|
|
* used internally by the legacy "egw_json_response.getFormValues" to recursively
|
|
* run over all form elements
|
|
* @param serialized is the object which will contain the form data
|
|
* @param children is the children node of the form we're runing over
|
|
* @param string _filterClass if given only return
|
|
*/
|
|
function _egw_json_getFormValues(serialized, children, _filterClass)
|
|
{
|
|
//alert('_egw_json_getFormValues(,,'+_filterClass+')');
|
|
for (var i = 0; i < children.length; ++i) {
|
|
var child = children[i];
|
|
|
|
if (typeof child.childNodes != "undefined")
|
|
_egw_json_getFormValues(serialized, child.childNodes, _filterClass);
|
|
|
|
if ((!_filterClass || $j(child).hasClass(_filterClass)) && typeof child.name != "undefined")
|
|
{
|
|
//alert('_egw_json_getFormValues(,,'+_filterClass+') calling _egw_json_getFormValue for name='+child.name+', class='+child.class+', value='+child.value);
|
|
_egw_json_getFormValue(serialized, child);
|
|
}
|
|
}
|
|
}
|
|
|
|
function _egw_json_getObjectLength(_obj)
|
|
{
|
|
var res = 0;
|
|
for (key in _obj)
|
|
{
|
|
if (_obj.hasOwnProperty(key))
|
|
res++;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
/**
|
|
* used internally to serialize
|
|
*/
|
|
function _egw_json_getFormValue(serialized, child)
|
|
{
|
|
//Return if the child doesn't have a name, is disabled, or is a radio-/checkbox and not checked
|
|
if ((typeof child.name == "undefined") || (child.disabled && child.disabled == true) ||
|
|
(child.type && (child.type == 'radio' || child.type == 'checkbox' || child.type == 'button' || child.type == 'submit') && (!child.checked)))
|
|
{
|
|
return;
|
|
}
|
|
|
|
var name = child.name;
|
|
var values = null;
|
|
|
|
if ('select-multiple' == child.type)
|
|
{
|
|
values = new Array;
|
|
for (var j = 0; j < child.length; ++j)
|
|
{
|
|
var option = child.options[j];
|
|
if (option.selected == true)
|
|
values.push(option.value);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
values = child.value;
|
|
}
|
|
|
|
//Special treatment if the name of the child contains a [] - then all theese
|
|
//values are added to an array.
|
|
var keyBegin = name.indexOf('[');
|
|
if (0 <= keyBegin) {
|
|
var n = name;
|
|
var k = n.substr(0, n.indexOf('['));
|
|
var a = n.substr(n.indexOf('['));
|
|
if (typeof serialized[k] == 'undefined')
|
|
serialized[k] = new Object;
|
|
|
|
var p = serialized; // pointer reset
|
|
while (a.length != 0) {
|
|
var sa = a.substr(0, a.indexOf(']')+1);
|
|
|
|
var lk = k; //save last key
|
|
var lp = p; //save last pointer
|
|
|
|
a = a.substr(a.indexOf(']')+1);
|
|
p = p[k];
|
|
k = sa.substr(1, sa.length-2);
|
|
if (k == '') {
|
|
if ('select-multiple' == child.type) {
|
|
k = lk; //restore last key
|
|
p = lp;
|
|
} else {
|
|
k = _egw_json_getObjectLength(p);
|
|
}
|
|
}
|
|
if (typeof p[k] == 'undefined')
|
|
{
|
|
p[k] = new Object;
|
|
}
|
|
}
|
|
p[k] = values;
|
|
} else {
|
|
//Add the value to the result object with the given name
|
|
if (typeof values != "undefined")
|
|
{
|
|
serialized[name] = values;
|
|
}
|
|
}
|
|
}
|