[25027] | 1 | /**
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| 2 | * Flash Multi Upload
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| 3 | *
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| 4 | * Based on a example from Alastair Dawson
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| 5 | *
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| 6 | * @link http://blog.vixiom.com/2006/09/08/multiple-file-upload-with-flash-and-ruby-on-rails/
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| 7 | * @author Alastair Dawson
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| 8 | * @author Andreas Gohr <[email protected]>
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| 9 | * @license MIT <http://www.opensource.org/licenses/mit-license.php>
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| 10 | */
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| 11 |
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| 12 | // delegate
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| 13 | import mx.utils.Delegate;
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| 14 | // ui components
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| 15 | import mx.controls.DataGrid;
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| 16 | import mx.controls.gridclasses.DataGridColumn
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| 17 | import mx.controls.Button;
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| 18 | import mx.controls.TextInput;
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| 19 | import mx.controls.CheckBox;
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| 20 | import mx.controls.Label;
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| 21 | // file reference
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| 22 | import flash.net.FileReferenceList;
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| 23 | import flash.net.FileReference;
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| 24 |
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| 25 | class MultipleUpload {
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| 26 |
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| 27 | private var fileRef:FileReferenceList;
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| 28 | private var fileRefListener:Object;
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| 29 | private var list:Array;
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| 30 | private var dp:Array;
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| 31 |
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| 32 | private var files_dg:DataGrid;
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| 33 | private var browse_btn:Button;
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| 34 | private var upload_btn:Button;
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| 35 | private var ns_input:TextInput;
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| 36 | private var ns_label:Label;
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| 37 | private var overwrite_cb:CheckBox;
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| 38 |
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| 39 | private var url:String;
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| 40 | private var upurl:String;
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| 41 | private var current:Number;
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| 42 | private var done:Number;
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| 43 | private var lasterror:String;
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| 44 |
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| 45 | /**
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| 46 | * Constructor.
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| 47 | *
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| 48 | * Initializes the needed objects and stage objects
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| 49 | */
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| 50 | public function MultipleUpload(fdg:DataGrid, bb:Button, ub:Button, nsi:TextInput, nsl:Label, ob:CheckBox) {
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| 51 | // references for objects on the stage
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| 52 | files_dg = fdg;
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| 53 | browse_btn = bb;
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| 54 | upload_btn = ub;
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| 55 | ns_input = nsi;
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| 56 | ns_label = nsl;
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| 57 | overwrite_cb = ob;
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| 58 |
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| 59 | // file list references & listener
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| 60 | fileRef = new FileReferenceList();
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| 61 | fileRefListener = new Object();
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| 62 | fileRef.addListener(fileRefListener);
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| 63 |
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| 64 | // setup
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| 65 | iniUI();
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| 66 | inifileRefListener();
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| 67 | }
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| 68 |
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| 69 | /**
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| 70 | * Initializes the User Interface
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| 71 | *
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| 72 | * Uses flashvars to access possibly localized names
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| 73 | */
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| 74 | private function iniUI() {
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| 75 | // register button handlers
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| 76 | browse_btn.onRelease = Delegate.create(this, this.browse);
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| 77 | upload_btn.onRelease = Delegate.create(this, this.upload);
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| 78 |
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| 79 | // columns for dataGrid
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| 80 | var col:DataGridColumn;
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| 81 | col = new DataGridColumn('name');
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| 82 | col.headerText = ( _root.L_gridname ? _root.L_gridname : 'Filename' );
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| 83 | col.sortable = false;
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| 84 | files_dg.addColumn(col);
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| 85 | col = new DataGridColumn('size');
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| 86 | col.headerText = ( _root.L_gridsize ? _root.L_gridsize : 'Size' );
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| 87 | col.sortable = false;
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| 88 | files_dg.addColumn(col);
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| 89 | col = new DataGridColumn('status');
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| 90 | col.headerText = ( _root.L_gridstat ? _root.L_gridstat : 'Status' );
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| 91 | col.sortable = false;
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| 92 | files_dg.addColumn(col);
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| 93 |
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| 94 | // label translations
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| 95 | if(_root.L_overwrite) overwrite_cb.label = _root.L_overwrite;
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| 96 | if(_root.L_browse) browse_btn.label = _root.L_browse;
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| 97 | if(_root.L_upload) upload_btn.label = _root.L_upload;
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| 98 | if(_root.L_namespace) ns_label.text = _root.L_namespace;
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| 99 |
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| 100 | // prefill input field
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| 101 | if(_root.O_ns) ns_input.text = _root.O_ns;
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| 102 |
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| 103 | // disable buttons
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| 104 | upload_btn.enabled = false;
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| 105 | if(!_root.O_overwrite) overwrite_cb.visible = false;
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| 106 |
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| 107 | // initalize the data provider list
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| 108 | dp = new Array();
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| 109 | list = new Array();
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| 110 | files_dg.spaceColumnsEqually();
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| 111 | }
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| 112 |
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| 113 | /**
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| 114 | * Open files selection dialog
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| 115 | *
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| 116 | * Adds the allowed file types
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| 117 | */
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| 118 | private function browse() {
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| 119 | if(_root.O_extensions){
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| 120 | var exts:Array = _root.O_extensions.split('|');
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| 121 | var filter:Object = new Object();
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| 122 | filter.description = (_root.L_filetypes ? _root.L_filetypes : 'Allowed filetypes');
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| 123 | filter.extension = '';
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| 124 | for(var i:Number = 0; i<exts.length; i++){
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| 125 | filter.extension += '*.'+exts[i]+';';
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| 126 | }
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| 127 | filter.extension = filter.extension.substr(0,filter.extension.length-1);
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| 128 | var apply:Array = new Array();
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| 129 | apply.push(filter);
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| 130 | fileRef.browse(apply);
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| 131 | }else{
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| 132 | fileRef.browse();
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| 133 | }
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| 134 | }
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| 135 |
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| 136 | /**
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| 137 | * Initiates the upload process
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| 138 | */
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| 139 | private function upload() {
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| 140 | // prepare backend URL
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| 141 | this.url = _root.O_backend; // from flashvars
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| 142 | this.url += '&ns='+escape(ns_input.text);
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| 143 |
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| 144 | // prepare upload url
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| 145 | this.upurl = this.url;
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| 146 | this.upurl += '§ok='+escape(_root.O_sectok);
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| 147 | this.upurl += '&authtok='+escape(_root.O_authtok);
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| 148 | if(overwrite_cb.selected) this.upurl += '&ow=1';
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| 149 |
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| 150 | // disable buttons
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| 151 | upload_btn.enabled = false;
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| 152 | browse_btn.enabled = false;
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| 153 | ns_input.enabled = false;
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| 154 | overwrite_cb.enabled = false;
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| 155 |
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| 156 | // init states
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| 157 | this.current = -1;
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| 158 | this.done = 0;
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| 159 | this.lasterror = '';
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| 160 |
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| 161 | // start process detached
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| 162 | _global.setTimeout(this,'uploadNext',100);
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| 163 | nextFrame();
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| 164 | }
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| 165 |
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| 166 | /**
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| 167 | * Uploads the next file in the list
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| 168 | */
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| 169 | private function uploadNext(){
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| 170 | this.current++;
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| 171 | if(this.current >= this.list.length){
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| 172 | return this.uploadDone();
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| 173 | }
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| 174 |
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| 175 | var file = this.list[this.current];
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| 176 |
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| 177 | if(_root.O_maxsize && (file.size > _root.O_maxsize)){
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| 178 | this.lasterror = (_root.L_toobig ? _root.L_toobig : 'too big');
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| 179 | _global.setTimeout(this,'uploadNext',100);
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| 180 | nextFrame();
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| 181 | }else{
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| 182 | file.addListener(fileRefListener);
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| 183 | file.upload(upurl);
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| 184 | // continues in the handlers
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| 185 | }
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| 186 | }
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| 187 |
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| 188 | /**
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| 189 | * Redirect to the namespace and set a success/error message
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| 190 | *
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| 191 | * Called when all files in the list where processed
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| 192 | */
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| 193 | private function uploadDone(){
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| 194 | var info = (_root.L_info ? _root.L_info : 'files uploaded');
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| 195 | if(this.done == this.list.length){
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| 196 | this.url += '&msg1='+escape(this.done+'/'+this.list.length+' '+info);
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| 197 | }else{
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| 198 | var lasterr = (_root.L_lasterr ? _root.L_lasterr : 'Last error:');
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| 199 | this.url += '&err='+escape(this.done+'/'+this.list.length+' '+info+' '+lasterr+' '+this.lasterror);
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| 200 | }
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| 201 |
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| 202 | // when done redirect
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| 203 | getURL(this.url,'_self');
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| 204 | }
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| 205 |
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| 206 | /**
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| 207 | * Set the status of a given file in the data grid
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| 208 | */
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| 209 | private function setStatus(file,msg){
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| 210 | for(var i:Number = 0; i < list.length; i++) {
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| 211 | if (list[i].name == file.name) {
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| 212 | files_dg.editField(i, 'status', msg);
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| 213 | nextFrame();
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| 214 | return;
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| 215 | }
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| 216 | }
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| 217 | }
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| 218 |
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| 219 | /**
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| 220 | * Initialize the file reference listener
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| 221 | */
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| 222 | private function inifileRefListener() {
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| 223 | fileRefListener.onSelect = Delegate.create(this, this.onSelect);
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| 224 | fileRefListener.onCancel = Delegate.create(this, this.onCancel);
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| 225 | fileRefListener.onOpen = Delegate.create(this, this.onOpen);
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| 226 | fileRefListener.onProgress = Delegate.create(this, this.onProgress);
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| 227 | fileRefListener.onComplete = Delegate.create(this, this.onComplete);
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| 228 | fileRefListener.onHTTPError = Delegate.create(this, this.onHTTPError);
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| 229 | fileRefListener.onIOError = Delegate.create(this, this.onIOError);
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| 230 | fileRefListener.onSecurityError = Delegate.create(this, this.onSecurityError);
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| 231 | }
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| 232 |
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| 233 | /**
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| 234 | * Handle file selection
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| 235 | *
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| 236 | * Files are added as in a list of references and beautified into the data grid dataprovider array
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| 237 | *
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| 238 | * Multiple browses will add to the list
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| 239 | */
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| 240 | private function onSelect(fileRefList:FileReferenceList) {
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| 241 | var sel = fileRefList.fileList;
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| 242 | for(var i:Number = 0; i < sel.length; i++) {
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| 243 | // check size
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| 244 | var stat:String;
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| 245 | if(_root.O_maxsize && sel[i].size > _root.O_maxsize){
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| 246 | stat = (_root.L_toobig ? _root.L_toobig : 'too big');
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| 247 | }else{
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| 248 | stat = (_root.L_ready ? _root.L_ready : 'ready for upload');
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| 249 | }
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| 250 | // add to grid
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| 251 | dp.push({name:sel[i].name, size:Math.round(sel[i].size / 1000) + " kb", status:stat});
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| 252 | // add to reference list
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| 253 | list.push(sel[i]);
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| 254 | }
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| 255 | // update dataGrid
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| 256 | files_dg.dataProvider = dp;
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| 257 | files_dg.spaceColumnsEqually();
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| 258 |
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| 259 | if(list.length > 0) upload_btn.enabled = true;
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| 260 | }
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| 261 |
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| 262 | /**
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| 263 | * Does nothing
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| 264 | */
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| 265 | private function onCancel() {
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| 266 | }
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| 267 |
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| 268 | /**
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| 269 | * Does nothing
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| 270 | */
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| 271 | private function onOpen(file:FileReference) {
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| 272 | }
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| 273 |
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| 274 | /**
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| 275 | * Set the upload progress
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| 276 | */
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| 277 | private function onProgress(file:FileReference, bytesLoaded:Number, bytesTotal:Number) {
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| 278 | var percentDone = Math.round((bytesLoaded / bytesTotal) * 100);
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| 279 | var msg:String = 'uploading @PCT@%';
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| 280 | if(_root.L_progress) msg = _root.L_progress;
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| 281 | msg = msg.split('@PCT@').join(percentDone);
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| 282 | this.setStatus(file,msg);
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| 283 | }
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| 284 |
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| 285 | /**
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| 286 | * Handle upload completion
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| 287 | */
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| 288 | private function onComplete(file:FileReference) {
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| 289 | this.setStatus(file,(_root.L_done ? _root.L_done : 'complete'));
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| 290 | this.done++;
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| 291 | uploadNext();
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| 292 | }
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| 293 |
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| 294 | /**
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| 295 | * Handle upload errors
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| 296 | */
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| 297 | private function onHTTPError(file:FileReference, httpError:Number) {
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| 298 | var error;
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| 299 | if(httpError == 400){
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| 300 | error = (_root.L_fail ? _root.L_fail : 'failed');
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| 301 | }else if(httpError == 401){
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| 302 | error = (_root.L_authfail ? _root.L_authfail : 'auth failed');
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| 303 | }else{
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| 304 | error = "HTTP Error " + httpError
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| 305 | }
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| 306 | this.setStatus(file,error);
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| 307 | this.lasterror = error;
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| 308 | uploadNext();
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| 309 | }
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| 310 |
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| 311 | /**
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| 312 | * Handle IO errors
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| 313 | */
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| 314 | private function onIOError(file:FileReference) {
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| 315 | this.setStatus(file,"IO Error");
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| 316 | this.lasterror = "IO Error";
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| 317 | uploadNext();
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| 318 | }
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| 319 |
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| 320 | /**
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| 321 | * Handle Security errors
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| 322 | */
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| 323 | private function onSecurityError(file:FileReference, errorString:String) {
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| 324 | this.setStatus(file,"SecurityError: " + errorString);
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| 325 | this.lasterror = "SecurityError: " + errorString;
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| 326 | uploadNext();
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| 327 | }
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| 328 |
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| 329 |
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| 330 | }
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