typo3/js/common.js

   1 /***************************************************************
   2 *
   3 *  javascript functions regarding the TYPO3 wrapper
   4 *  for the javascript library "prototype".
   5 *
   6 *  Copyright notice
   7 *
   8 *  (c) 2008-2010 Benjamin Mack <www.xnos.org>
   9 *  All rights reserved
  10 *
  11 *  This script is part of the TYPO3 backend provided by
  12 *  Kasper Skaarhoj <kasper@typo3.com> together with TYPO3
  13 *
  14 *  Released under GNU/GPL (see license file in /typo3/)
  15 *
  16 *  This script is distributed in the hope that it will be useful,
  17 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  19 *
  20 *  This copyright notice MUST APPEAR in all copies of this script
  21 *
  22 ***************************************************************/
  23
  24 // Please make sure that prototype.js is loaded before loading this
  25 // file in your script, the responder is only added if prototype was loaded
  26
  27 if (Prototype) {
  28         // adding generic a responder to use when a AJAX request is done
  29         Ajax.Responders.register({
  30                 onCreate: function(request, transport) {
  31
  32                         // if the TYPO3 AJAX backend is used,
  33                         // the onSuccess & onComplete callbacks are hooked
  34                         if (request.url.indexOf("ajax.php") === -1) {
  35                                 return;
  36                         }
  37
  38                         var origSuccess = request.options.onSuccess, origComplete = request.options.onComplete;
  39
  40                         // hooking "onSuccess"
  41                         if (origSuccess) {
  42                                 request.options.onSuccess = function(xhr, json) {
  43                                         if (!json) {
  44                                                 T3AJAX.showError(xhr);
  45                                         } else {
  46                                                 origSuccess(xhr, json);
  47                                         }
  48                                 }
  49                         }
  50
  51                         // hooking "onComplete", using T3Error handler if available
  52                         if (origComplete) {
  53                                 request.options.onComplete = function(xhr, json) {
  54                                         if (!json && request.options.onT3Error) {
  55                                                 request.options.onT3Error(xhr, json);
  56                                         } else if (!json) {
  57                                                 T3AJAX.showError(xhr);
  58                                         } else {
  59                                                 origComplete(xhr, json);
  60                                         }
  61                                 };
  62                         }
  63                 }
  64         });
  65 }
  66
  67 var T3AJAX = {};
  68 T3AJAX.showError = function(xhr, json) {
  69         if (typeof xhr.responseText !== undefined && xhr.responseText) {
  70                 if (typeof Ext.MessageBox !== undefined) {
  71                         Ext.MessageBox.alert('TYPO3', xhr.responseText);
  72                 }
  73                 else {
  74                         alert(xhr.responseText);
  75                 }
  76         }
  77 };
  78
  79 // common storage and global object, could later hold more information about the current user etc.
  80 var TYPO3 = {
  81         // store instances that only should be running once
  82         _instances: {},
  83         getInstance: function(className) {
  84                 return TYPO3._instances[className] || false;
  85         },
  86         addInstance: function(className, instance) {
  87                 TYPO3._instances[className] = instance;
  88                 return instance;
  89         },
  90
  91         helpers: {
  92                 // creates an array by splitting a string into parts, taking a delimiter
  93                 split: function(str, delim) {
  94                         var res = [];
  95                         while (str.indexOf(delim) > 0) {
  96                                 res.push(str.substr(0, str.indexOf(delim)));
  97                                 str = str.substr(str.indexOf(delim) + delim.length);
  98                         }
  99                         return res;
 100                 }
 101         }
 102 };