This is the source code of the “batch-after-batch” multiple file uploader in Flash 8 (ActionScript 2.0) demonstrated at http://demo.programmerspride.com/flash-batch-after-batch-multi-upload – live demo.
import flash.net.FileReference;
import flash.net.FileReferenceList;
import flash.external.ExternalInterface;
var imageFiles:FileReferenceList = new FileReferenceList;
var list:Array = new Array(); // Handler to the selected files.
var listener:Object = new Object(); // The listener object that listens for FileReference events.
var upload_listener:Object = new Object();
imageFiles.addListener(listener);
// These next four (4) lines will just load the external "browse button".
// Parent movie clip.
mc.createEmptyMovieClip("img", getNextHighestDepth());
// Child movie clip that the image will replace.
mc.img.createEmptyMovieClip("image", 99);
// Create the image loader that loads the "browse button" as configured.
var loader:MovieClipLoader = new MovieClipLoader();
loader.loadClip(_root.btn_browse_name, mc.img.image);
// When the "browse button" is clicked.
mc.onPress = function():Void {
// Actual browsing of Files
imageFiles.browse([{
description: _root.file_description,
extension: _root.file_extension
}]);
}
// When files are selected then call JS UI for enqueueing.
listener.onSelect = function():Void {
list = imageFiles.fileList;
var total:Number = list.length;
if(total > 0) {
ExternalInterface.call("img.clearqueue()");
for(var i:Number = 0; i<total; i++) {
// 0 = Size, 1 = True/False when accepted or not.
var info:Array = getFileSize(list[i].size);
// Send filename to JS for queueing.
ExternalInterface.call("img.enqueue('"+ list[i].name +"','"+ info[0] +"','"+
info[1] +"')");
}
}
}
// Waits for some JS commands from the web-page document.
ExternalInterface.addCallback("upload", this, doFileUpload);
ExternalInterface.addCallback("cancel", this, doFileCancel);
function doFileUpload():Void {
var total:Number = list.length;
if(total > 0) {
for(var i:Number = 0; i<total; i++) {
// 0 = Size, 1 = True/False when accepted or not.
var info:Array = getFileSize(list[i].size);
if(info[1] == true) {
list[i].addListener(upload_listener);
list[i].upload("upload.php?sessid="+ _root.session_id);
}
}
} else ExternalInterface.call("img.empty()");
}
// This function is triggered when an item is cancelled by User.
function doFileCancel(filename:String):Void {
doRemoval(filename);
ExternalInterface.call("img.cancelled('"+ filename +"','"+ ((list.length == 0) ? 1 : 0) +"')");
}
function doRemoval(filename:String) {
var index:Number = getFileIndex(filename);
list[index].cancel(); // Actual cancelling from the memory queue.
list[index].removeListener(upload_listener); // Remove attached process handlers.
list.splice(index, 1); // Dont' use .pop() in removing an item. Use .splice() instead.
}
upload_listener.onProgress = function(file:FileReference, bytesLoaded:Number, bytesTotal:Number):Void {
var p:Number = Math.round((bytesLoaded / bytesTotal) * 100);
var tmp:Array = getFileSize(bytesLoaded);
ExternalInterface.call("img.progress('"+ p +"','"+ file.name +"','"+ tmp[0] +"')");
};
upload_listener.onComplete = function(file:FileReference):Void {
var filename:String = file.name;
doRemoval(filename);
ExternalInterface.call("img.uploaded('"+ filename +"','"+ ((list.length == 0) ? 1 : 0) +"')");
};
upload_listener.onHTTPError = function(file:FileReference, httpError:Number):Void {
ExternalInterface.call("this.onError('"+ file.name +"','HTTP Error: "+ httpError +"')");
}
upload_listener.onIOError = function(file:FileReference):Void {
ExternalInterface.call("this.onError('"+ file.name +"','I/O Error')");
}
upload_listener.onSecurityError = function(file:FileReference, errorString:String):Void {
ExternalInterface.call("this.onError('"+ file.name +"','Security Error: "+ errorString +"')");
}
Initializing the custom “browse” button:
Stage.scaleMode = "noscale"; var canvas_width:Number = 250; var canvas_height:Number = 50; if(_root.btn_browse_width > canvas_width) canvas_width = _root.btn_browse_width; if(_root.btn_browse_height > canvas_height) canvas_height = _root.btn_browse_height; var xPosition:Number = ((canvas_width - _root.btn_browse_width) / 2); var yPosition:Number = ((canvas_height - _root.btn_browse_height) / 2); mc._x = xPosition; mc._y = yPosition;
Miscellaneous:
function getFileIndex(filename:String):Number {
var total:Number = list.length;
if(total > 0) {
for(var i:Number = 0; i<total; i++) {
if(list[i].name == filename) {
return i;
}
}
}
return -1;
}
function getFileSize(filesize:Number):Array {
var bytes:Number = filesize;
var unit:String = "B";
var accept:Boolean = true;
if(bytes < 1073741824) { // If less than GB
// Means MB ( 1024 * 1024 )
if(bytes >= 1048576) { // If greater or equal to MB but less than GB
bytes = (bytes / 1024 / 1024);
unit = "MB";
}
else {
// Means KB ( 1024 )
if(bytes >= 1024) { // If greater or equal to KB but less than MB
bytes = (bytes / 1024);
unit = "KB";
}
}
}
else {
// Too large.
accept = false;
}
if(unit != "B") {
// Round it off in 2 decimal places
bytes = (Math.round(bytes * Math.pow(10, 2)) / Math.pow(10, 2))
}
if(bytes > _root.file_size_max && unit == "MB") accept = false;
return [bytes +" "+ unit, accept];
}
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