wp-includes/js/swfupload/plugins/swfupload.queue.js

   1 /*
   2         Queue Plug-in
   3
   4         Features:
   5                 *Adds a cancelQueue() method for cancelling the entire queue.
   6                 *All queued files are uploaded when startUpload() is called.
   7                 *If false is returned from uploadComplete then the queue upload is stopped.
   8                  If false is not returned (strict comparison) then the queue upload is continued.
   9                 *Adds a QueueComplete event that is fired when all the queued files have finished uploading.
  10                  Set the event handler with the queue_complete_handler setting.
  11
  12         */
  13
  14 var SWFUpload;
  15 if (typeof(SWFUpload) === "function") {
  16         SWFUpload.queue = {};
  17
  18         SWFUpload.prototype.initSettings = (function (oldInitSettings) {
  19                 return function () {
  20                         if (typeof(oldInitSettings) === "function") {
  21                                 oldInitSettings.call(this);
  22                         }
  23
  24                         this.queueSettings = {};
  25
  26                         this.queueSettings.queue_cancelled_flag = false;
  27                         this.queueSettings.queue_upload_count = 0;
  28
  29                         this.queueSettings.user_upload_complete_handler = this.settings.upload_complete_handler;
  30                         this.queueSettings.user_upload_start_handler = this.settings.upload_start_handler;
  31                         this.settings.upload_complete_handler = SWFUpload.queue.uploadCompleteHandler;
  32                         this.settings.upload_start_handler = SWFUpload.queue.uploadStartHandler;
  33
  34                         this.settings.queue_complete_handler = this.settings.queue_complete_handler || null;
  35                 };
  36         })(SWFUpload.prototype.initSettings);
  37
  38         SWFUpload.prototype.startUpload = function (fileID) {
  39                 this.queueSettings.queue_cancelled_flag = false;
  40                 this.callFlash("StartUpload", [fileID]);
  41         };
  42
  43         SWFUpload.prototype.cancelQueue = function () {
  44                 this.queueSettings.queue_cancelled_flag = true;
  45                 this.stopUpload();
  46
  47                 var stats = this.getStats();
  48                 while (stats.files_queued > 0) {
  49                         this.cancelUpload();
  50                         stats = this.getStats();
  51                 }
  52         };
  53
  54         SWFUpload.queue.uploadStartHandler = function (file) {
  55                 var returnValue;
  56                 if (typeof(this.queueSettings.user_upload_start_handler) === "function") {
  57                         returnValue = this.queueSettings.user_upload_start_handler.call(this, file);
  58                 }
  59
  60                 // To prevent upload a real "FALSE" value must be returned, otherwise default to a real "TRUE" value.
  61                 returnValue = (returnValue === false) ? false : true;
  62
  63                 this.queueSettings.queue_cancelled_flag = !returnValue;
  64
  65                 return returnValue;
  66         };
  67
  68         SWFUpload.queue.uploadCompleteHandler = function (file) {
  69                 var user_upload_complete_handler = this.queueSettings.user_upload_complete_handler;
  70                 var continueUpload;
  71
  72                 if (file.filestatus === SWFUpload.FILE_STATUS.COMPLETE) {
  73                         this.queueSettings.queue_upload_count++;
  74                 }
  75
  76                 if (typeof(user_upload_complete_handler) === "function") {
  77                         continueUpload = (user_upload_complete_handler.call(this, file) === false) ? false : true;
  78                 } else if (file.filestatus === SWFUpload.FILE_STATUS.QUEUED) {
  79                         // If the file was stopped and re-queued don't restart the upload
  80                         continueUpload = false;
  81                 } else {
  82                         continueUpload = true;
  83                 }
  84
  85                 if (continueUpload) {
  86                         var stats = this.getStats();
  87                         if (stats.files_queued > 0 && this.queueSettings.queue_cancelled_flag === false) {
  88                                 this.startUpload();
  89                         } else if (this.queueSettings.queue_cancelled_flag === false) {
  90                                 this.queueEvent("queue_complete_handler", [this.queueSettings.queue_upload_count]);
  91                                 this.queueSettings.queue_upload_count = 0;
  92                         } else {
  93                                 this.queueSettings.queue_cancelled_flag = false;
  94                                 this.queueSettings.queue_upload_count = 0;
  95                         }
  96                 }
  97         };
  98 }