koha-tmpl/intranet-tmpl/lib/jquery/plugins/ajaxfileupload.js

   1
   2 jQuery.extend({
   3
   4     createUploadIframe: function(id, uri)
   5         {
   6                         //create frame
   7             var frameId = 'jUploadFrame' + id;
   8
   9             try {
  10                 var io = document.createElement('<iframe id="' + frameId + '" name="' + frameId + '" />');
  11                 if(typeof uri== 'boolean'){
  12                     io.src = 'javascript:false';
  13                 }
  14                 else if(typeof uri== 'string'){
  15                     io.src = uri;
  16                 }
  17             }
  18             catch(e) {
  19                 var io = document.createElement('iframe');
  20                 io.id = frameId;
  21                 io.name = frameId;
  22             }
  23             io.style.position = 'absolute';
  24             io.style.top = '-1000px';
  25             io.style.left = '-1000px';
  26
  27             document.body.appendChild(io);
  28
  29             return io
  30     },
  31     createUploadForm: function(id, fileElementId)
  32         {
  33                 //create form
  34                 var formId = 'jUploadForm' + id;
  35                 var fileId = 'jUploadFile' + id;
  36                 var form = $('<form  action="" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>');
  37                 var oldElement = $('#' + fileElementId);
  38                 var newElement = $(oldElement).clone();
  39                 $(oldElement).attr('id', fileId);
  40                 $(oldElement).before(newElement);
  41                 $(oldElement).appendTo(form);
  42                 //set attributes
  43                 $(form).css('position', 'absolute');
  44                 $(form).css('top', '-1200px');
  45                 $(form).css('left', '-1200px');
  46                 $(form).appendTo('body');
  47                 return form;
  48     },
  49
  50     ajaxFileUpload: function(s) {
  51         // TODO introduce global settings, allowing the client to modify them for all requests, not only timeout
  52         s = jQuery.extend({}, jQuery.ajaxSettings, s);
  53         var id = new Date().getTime()
  54                 var form = jQuery.createUploadForm(id, s.fileElementId);
  55                 var io = jQuery.createUploadIframe(id, s.secureuri);
  56                 var frameId = 'jUploadFrame' + id;
  57                 var formId = 'jUploadForm' + id;
  58         // Watch for a new set of requests
  59         if ( s.global && ! jQuery.active++ )
  60                 {
  61                         jQuery.event.trigger( "ajaxStart" );
  62                 }
  63         var requestDone = false;
  64         // Create the request object
  65         var xml = {}
  66         if ( s.global )
  67             jQuery.event.trigger("ajaxSend", [xml, s]);
  68         // Wait for a response to come back
  69         var uploadCallback = function(isTimeout)
  70                 {
  71                         var io = document.getElementById(frameId);
  72             try
  73                         {
  74                                 if(io.contentWindow)
  75                                 {
  76                                          xml.responseText = io.contentWindow.document.body?io.contentWindow.document.body.innerHTML:null;
  77                          xml.responseXML = io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document;
  78
  79                                 }else if(io.contentDocument)
  80                                 {
  81                                          xml.responseText = io.contentDocument.document.body?io.contentDocument.document.body.innerHTML:null;
  82                         xml.responseXML = io.contentDocument.document.XMLDocument?io.contentDocument.document.XMLDocument:io.contentDocument.document;
  83                                 }
  84             }catch(e)
  85                         {
  86                                 jQuery.handleError(s, xml, null, e);
  87                         }
  88             if ( xml || isTimeout == "timeout")
  89                         {
  90                 requestDone = true;
  91                 var status;
  92                 try {
  93                     status = isTimeout != "timeout" ? "success" : "error";
  94                     // Make sure that the request was successful or notmodified
  95                     if ( status != "error" )
  96                                         {
  97                         // process the data (runs the xml through httpData regardless of callback)
  98                         var data = jQuery.uploadHttpData( xml, s.dataType );
  99                         // If a local callback was specified, fire it and pass it the data
 100                         if ( s.success )
 101                             s.success( data, status );
 102
 103                         // Fire the global callback
 104                         if( s.global )
 105                             jQuery.event.trigger( "ajaxSuccess", [xml, s] );
 106                     } else
 107                         jQuery.handleError(s, xml, status);
 108                 } catch(e)
 109                                 {
 110                     status = "error";
 111                     jQuery.handleError(s, xml, status, e);
 112                 }
 113
 114                 // The request was completed
 115                 if( s.global )
 116                     jQuery.event.trigger( "ajaxComplete", [xml, s] );
 117
 118                 // Handle the global AJAX counter
 119                 if ( s.global && ! --jQuery.active )
 120                     jQuery.event.trigger( "ajaxStop" );
 121
 122                 // Process result
 123                 if ( s.complete )
 124                     s.complete(xml, status);
 125
 126                 jQuery(io).unbind()
 127
 128                 setTimeout(function()
 129                                                                         {       try
 130                                                                                 {
 131                                                                                         $(io).remove();
 132                                                                                         $(form).remove();
 133
 134                                                                                 } catch(e)
 135                                                                                 {
 136                                                                                         jQuery.handleError(s, xml, null, e);
 137                                                                                 }
 138
 139                                                                         }, 100)
 140
 141                 xml = null
 142
 143             }
 144         }
 145         // Timeout checker
 146         if ( s.timeout > 0 )
 147                 {
 148             setTimeout(function(){
 149                 // Check to see if the request is still happening
 150                 if( !requestDone ) uploadCallback( "timeout" );
 151             }, s.timeout);
 152         }
 153         try
 154                 {
 155            // var io = $('#' + frameId);
 156                         var form = $('#' + formId);
 157                         $(form).attr('action', s.url);
 158                         $(form).attr('method', 'POST');
 159                         $(form).attr('target', frameId);
 160             if(form.encoding)
 161                         {
 162                 form.encoding = 'multipart/form-data';
 163             }
 164             else
 165                         {
 166                 form.enctype = 'multipart/form-data';
 167             }
 168             $(form).submit();
 169
 170         } catch(e)
 171                 {
 172             jQuery.handleError(s, xml, null, e);
 173         }
 174         if(window.attachEvent){
 175             document.getElementById(frameId).attachEvent('onload', uploadCallback);
 176         }
 177         else{
 178             document.getElementById(frameId).addEventListener('load', uploadCallback, false);
 179         }
 180         return {abort: function () {}};
 181
 182     },
 183
 184     uploadHttpData: function( r, type ) {
 185         var data = !type;
 186         data = type == "xml" || data ? r.responseXML : r.responseText;
 187         // If the type is "script", eval it in global context
 188         if ( type == "script" )
 189             jQuery.globalEval( data );
 190         // Get the JavaScript object, if JSON is used.
 191         if ( type == "json" )
 192             eval( "data = " + data );
 193         // evaluate scripts within html
 194         if ( type == "html" )
 195             jQuery("<div>").html(data).evalScripts();
 196                         //alert($('param', data).each(function(){alert($(this).attr('value'));}));
 197         return data;
 198     }
 199 })
 200