emels/static/django_extensions/js/jquery.ajaxQueue.js

   1 /**
   2  * Ajax Queue Plugin
   3  *
   4  * Homepage: http://jquery.com/plugins/project/ajaxqueue
   5  * Documentation: http://docs.jquery.com/AjaxQueue
   6  */
   7
   8 /**
   9
  10 <script>
  11 $(function(){
  12         jQuery.ajaxQueue({
  13                 url: "test.php",
  14                 success: function(html){ jQuery("ul").append(html); }
  15         });
  16         jQuery.ajaxQueue({
  17                 url: "test.php",
  18                 success: function(html){ jQuery("ul").append(html); }
  19         });
  20         jQuery.ajaxSync({
  21                 url: "test.php",
  22                 success: function(html){ jQuery("ul").append("<b>"+html+"</b>"); }
  23         });
  24         jQuery.ajaxSync({
  25                 url: "test.php",
  26                 success: function(html){ jQuery("ul").append("<b>"+html+"</b>"); }
  27         });
  28 });
  29 </script>
  30 <ul style="position: absolute; top: 5px; right: 5px;"></ul>
  31
  32  */
  33 /*
  34  * Queued Ajax requests.
  35  * A new Ajax request won't be started until the previous queued
  36  * request has finished.
  37  */
  38
  39 /*
  40  * Synced Ajax requests.
  41  * The Ajax request will happen as soon as you call this method, but
  42  * the callbacks (success/error/complete) won't fire until all previous
  43  * synced requests have been completed.
  44  */
  45
  46
  47 (function(jQuery) {
  48
  49         var ajax = jQuery.ajax;
  50
  51         var pendingRequests = {};
  52
  53         var synced = [];
  54         var syncedData = [];
  55
  56         jQuery.ajax = function(settings) {
  57                 // create settings for compatibility with ajaxSetup
  58                 settings = jQuery.extend(settings, jQuery.extend({}, jQuery.ajaxSettings, settings));
  59
  60                 var port = settings.port;
  61
  62                 switch(settings.mode) {
  63                 case "abort":
  64                         if ( pendingRequests[port] ) {
  65                                 pendingRequests[port].abort();
  66                         }
  67                         return pendingRequests[port] = ajax.apply(this, arguments);
  68                 case "queue":
  69                         var _old = settings.complete;
  70                         settings.complete = function(){
  71                                 if ( _old )
  72                                         _old.apply( this, arguments );
  73                                 jQuery([ajax]).dequeue("ajax" + port );;
  74                         };
  75
  76                         jQuery([ ajax ]).queue("ajax" + port, function(){
  77                                 ajax( settings );
  78                         });
  79                         return;
  80                 case "sync":
  81                         var pos = synced.length;
  82
  83                         synced[ pos ] = {
  84                                 error: settings.error,
  85                                 success: settings.success,
  86                                 complete: settings.complete,
  87                                 done: false
  88                         };
  89
  90                         syncedData[ pos ] = {
  91                                 error: [],
  92                                 success: [],
  93                                 complete: []
  94                         };
  95
  96                         settings.error = function(){ syncedData[ pos ].error = arguments; };
  97                         settings.success = function(){ syncedData[ pos ].success = arguments; };
  98                         settings.complete = function(){
  99                                 syncedData[ pos ].complete = arguments;
 100                                 synced[ pos ].done = true;
 101
 102                                 if ( pos == 0 || !synced[ pos-1 ] )
 103                                         for ( var i = pos; i < synced.length && synced[i].done; i++ ) {
 104                                                 if ( synced[i].error ) synced[i].error.apply( jQuery, syncedData[i].error );
 105                                                 if ( synced[i].success ) synced[i].success.apply( jQuery, syncedData[i].success );
 106                                                 if ( synced[i].complete ) synced[i].complete.apply( jQuery, syncedData[i].complete );
 107
 108                                                 synced[i] = null;
 109                                                 syncedData[i] = null;
 110                                         }
 111                         };
 112                 }
 113                 return ajax.apply(this, arguments);
 114         };
 115
 116 })((typeof window.jQuery == 'undefined' && typeof window.django != 'undefined')
 117   ? django.jQuery
 118   : jQuery
 119 );