examples/image-organizer/SWFUpload/plugins/swfupload.queue.js

   1 /*!
   2  * Ext JS Library 3.1.1
   3  * Copyright(c) 2006-2010 Ext JS, LLC
   4  * licensing@extjs.com
   5  * http://www.extjs.com/license
   6  */
   7 /*\r
   8         Queue Plug-in\r
   9         \r
  10         Features:\r
  11                 *Adds a cancelQueue() method for cancelling the entire queue.\r
  12                 *All queued files are uploaded when startUpload() is called.\r
  13                 *If false is returned from uploadComplete then the queue upload is stopped.\r
  14                  If false is not returned (strict comparison) then the queue upload is continued.\r
  15                 *Adds a QueueComplete event that is fired when all the queued files have finished uploading.\r
  16                  Set the event handler with the queue_complete_handler setting.\r
  17                 \r
  18         */\r
  19 \r
  20 var SWFUpload;\r
  21 if (typeof(SWFUpload) === "function") {\r
  22         SWFUpload.queue = {};\r
  23         \r
  24         SWFUpload.prototype.initSettings = (function (oldInitSettings) {\r
  25                 return function () {\r
  26                         if (typeof(oldInitSettings) === "function") {\r
  27                                 oldInitSettings.call(this);\r
  28                         }\r
  29                         \r
  30                         this.queueSettings = {};\r
  31                         \r
  32                         this.queueSettings.queue_cancelled_flag = false;\r
  33                         this.queueSettings.queue_upload_count = 0;\r
  34                         \r
  35                         this.queueSettings.user_upload_complete_handler = this.settings.upload_complete_handler;\r
  36                         this.queueSettings.user_upload_start_handler = this.settings.upload_start_handler;\r
  37                         this.settings.upload_complete_handler = SWFUpload.queue.uploadCompleteHandler;\r
  38                         this.settings.upload_start_handler = SWFUpload.queue.uploadStartHandler;\r
  39                         \r
  40                         this.settings.queue_complete_handler = this.settings.queue_complete_handler || null;\r
  41                 };\r
  42         })(SWFUpload.prototype.initSettings);\r
  43 \r
  44         SWFUpload.prototype.startUpload = function (fileID) {\r
  45                 this.queueSettings.queue_cancelled_flag = false;\r
  46                 this.callFlash("StartUpload", [fileID]);\r
  47         };\r
  48 \r
  49         SWFUpload.prototype.cancelQueue = function () {\r
  50                 this.queueSettings.queue_cancelled_flag = true;\r
  51                 this.stopUpload();\r
  52                 \r
  53                 var stats = this.getStats();\r
  54                 while (stats.files_queued > 0) {\r
  55                         this.cancelUpload();\r
  56                         stats = this.getStats();\r
  57                 }\r
  58         };\r
  59         \r
  60         SWFUpload.queue.uploadStartHandler = function (file) {\r
  61                 var returnValue;\r
  62                 if (typeof(this.queueSettings.user_upload_start_handler) === "function") {\r
  63                         returnValue = this.queueSettings.user_upload_start_handler.call(this, file);\r
  64                 }\r
  65                 \r
  66                 // To prevent upload a real "FALSE" value must be returned, otherwise default to a real "TRUE" value.\r
  67                 returnValue = (returnValue === false) ? false : true;\r
  68                 \r
  69                 this.queueSettings.queue_cancelled_flag = !returnValue;\r
  70 \r
  71                 return returnValue;\r
  72         };\r
  73         \r
  74         SWFUpload.queue.uploadCompleteHandler = function (file) {\r
  75                 var user_upload_complete_handler = this.queueSettings.user_upload_complete_handler;\r
  76                 var continueUpload;\r
  77                 \r
  78                 if (file.filestatus === SWFUpload.FILE_STATUS.COMPLETE) {\r
  79                         this.queueSettings.queue_upload_count++;\r
  80                 }\r
  81 \r
  82                 if (typeof(user_upload_complete_handler) === "function") {\r
  83                         continueUpload = (user_upload_complete_handler.call(this, file) === false) ? false : true;\r
  84                 } else if (file.filestatus === SWFUpload.FILE_STATUS.QUEUED) {\r
  85                         // If the file was stopped and re-queued don't restart the upload\r
  86                         continueUpload = false;\r
  87                 } else {\r
  88                         continueUpload = true;\r
  89                 }\r
  90                 \r
  91                 if (continueUpload) {\r
  92                         var stats = this.getStats();\r
  93                         if (stats.files_queued > 0 && this.queueSettings.queue_cancelled_flag === false) {\r
  94                                 this.startUpload();\r
  95                         } else if (this.queueSettings.queue_cancelled_flag === false) {\r
  96                                 this.queueEvent("queue_complete_handler", [this.queueSettings.queue_upload_count]);\r
  97                                 this.queueSettings.queue_upload_count = 0;\r
  98                         } else {\r
  99                                 this.queueSettings.queue_cancelled_flag = false;\r
 100                                 this.queueSettings.queue_upload_count = 0;\r
 101                         }\r
 102                 }\r
 103         };\r
 104 }