repository/filepicker.js

   1 // YUI3 File Picker module for moodle
   2 // Author: Dongsheng Cai <dongsheng@moodle.com>
   3
   4 /**
   5  *
   6  * File Picker UI
   7  * =====
   8  * this.fpnode, contains reference to filepicker Node, non-empty if and only if rendered
   9  * this.api, stores the URL to make ajax request
  10  * this.mainui, YUI Panel
  11  * this.selectnode, contains reference to select-file Node
  12  * this.selectui, YUI Panel for selecting particular file
  13  * this.msg_dlg, YUI Panel for error or info message
  14  * this.process_dlg, YUI Panel for processing existing filename
  15  * this.treeview, YUI Treeview
  16  * this.viewmode, store current view mode
  17  * this.pathbar, reference to the Node with path bar
  18  * this.pathnode, a Node element representing one folder in a path bar (not attached anywhere, just used for template)
  19  * this.currentpath, the current path in the repository (or last requested path)
  20  *
  21  * Filepicker options:
  22  * =====
  23  * this.options.client_id, the instance id
  24  * this.options.contextid
  25  * this.options.itemid
  26  * this.options.repositories, stores all repositories displaied in file picker
  27  * this.options.formcallback
  28  *
  29  * Active repository options
  30  * =====
  31  * this.active_repo.id
  32  * this.active_repo.nosearch
  33  * this.active_repo.norefresh
  34  * this.active_repo.nologin
  35  * this.active_repo.help
  36  * this.active_repo.manage
  37  *
  38  * Server responses
  39  * =====
  40  * this.filelist, cached filelist
  41  * this.pages
  42  * this.page
  43  * this.filepath, current path (each element of the array is a part of the breadcrumb)
  44  * this.logindata, cached login form
  45  */
  46
  47 YUI.add('moodle-core_filepicker', function(Y) {
  48     /** help function to extract width/height style as a number, not as a string */
  49     Y.Node.prototype.getStylePx = function(attr) {
  50         var style = this.getStyle(attr);
  51         if (''+style == '0' || ''+style == '0px') {
  52             return 0;
  53         }
  54         var matches = style.match(/^([\d\.]+)px$/)
  55         if (matches && parseFloat(matches[1])) {
  56             return parseFloat(matches[1]);
  57         }
  58         return null;
  59     }
  60
  61     /** if condition is met, the class is added to the node, otherwise - removed */
  62     Y.Node.prototype.addClassIf = function(className, condition) {
  63         if (condition) {
  64             this.addClass(className);
  65         } else {
  66             this.removeClass(className);
  67         }
  68         return this;
  69     }
  70
  71     /** sets the width(height) of the node considering existing minWidth(minHeight) */
  72     Y.Node.prototype.setStyleAdv = function(stylename, value) {
  73         var stylenameCap = stylename.substr(0,1).toUpperCase() + stylename.substr(1, stylename.length-1).toLowerCase();
  74         this.setStyle(stylename, '' + Math.max(value, this.getStylePx('min'+stylenameCap)) + 'px')
  75         return this;
  76     }
  77
  78     /** set image source to src, if there is preview, remember it in lazyloading.
  79      *  If there is a preview and it was already loaded, use it. */
  80     Y.Node.prototype.setImgSrc = function(src, realsrc, lazyloading) {
  81         if (realsrc) {
  82             if (M.core_filepicker.loadedpreviews[realsrc]) {
  83                 this.set('src', realsrc).addClass('realpreview');
  84                 return this;
  85             } else {
  86                 if (!this.get('id')) {
  87                     this.generateID();
  88                 }
  89                 lazyloading[this.get('id')] = realsrc;
  90             }
  91         }
  92         this.set('src', src);
  93         return this;
  94     }
  95
  96     /**
  97      * Replaces the image source with preview. If the image is inside the treeview, we need
  98      * also to update the html property of corresponding YAHOO.widget.HTMLNode
  99      * @param array lazyloading array containing associations of imgnodeid->realsrc
 100      */
 101     Y.Node.prototype.setImgRealSrc = function(lazyloading) {
 102         if (this.get('id') && lazyloading[this.get('id')]) {
 103             var newsrc = lazyloading[this.get('id')];
 104             M.core_filepicker.loadedpreviews[newsrc] = true;
 105             this.set('src', newsrc).addClass('realpreview');
 106             delete lazyloading[this.get('id')];
 107             var treenode = this.ancestor('.fp-treeview')
 108             if (treenode && treenode.get('parentNode').treeview) {
 109                 treenode.get('parentNode').treeview.getRoot().refreshPreviews(this.get('id'), newsrc);
 110             }
 111         }
 112         return this;
 113     }
 114
 115     /** scan TreeView to find which node contains image with id=imgid and replace it's html
 116      * with the new image source. */
 117     Y.YUI2.widget.Node.prototype.refreshPreviews = function(imgid, newsrc, regex) {
 118         if (!regex) {
 119             regex = new RegExp("<img\\s[^>]*id=\""+imgid+"\"[^>]*?(/?)>", "im");
 120         }
 121         if (this.expanded || this.isLeaf) {
 122             var html = this.getContentHtml();
 123             if (html && this.setHtml && regex.test(html)) {
 124                 var newhtml = this.html.replace(regex, "<img id=\""+imgid+"\" src=\""+newsrc+"\" class=\"realpreview\"$1>", html);
 125                 this.setHtml(newhtml);
 126                 return true;
 127             }
 128             if (!this.isLeaf && this.children) {
 129                 for(var c in this.children) {
 130                     if (this.children[c].refreshPreviews(imgid, newsrc, regex)) {
 131                         return true;
 132                     }
 133                 }
 134             }
 135         }
 136         return false;
 137     }
 138
 139     /**
 140      * Displays a list of files (used by filepicker, filemanager) inside the Node
 141      *
 142      * @param array options
 143      *   viewmode : 1 - icons, 2 - tree, 3 - table
 144      *   appendonly : whether fileslist need to be appended instead of replacing the existing content
 145      *   filenode : Node element that contains template for displaying one file
 146      *   callback : On click callback. The element of the fileslist array will be passed as argument
 147      *   rightclickcallback : On right click callback (optional).
 148      *   callbackcontext : context where callbacks are executed
 149      *   sortable : whether content may be sortable (in table mode)
 150      *   dynload : allow dynamic load for tree view
 151      *   filepath : for pre-building of tree view - the path to the current directory in filepicker format
 152      *   treeview_dynload : callback to function to dynamically load the folder in tree view
 153      *   classnamecallback : callback to function that returns the class name for an element
 154      * @param array fileslist array of files to show, each array element may have attributes:
 155      *   title or fullname : file name
 156      *   shorttitle (optional) : display file name
 157      *   thumbnail : url of image
 158      *   icon : url of icon image
 159      *   thumbnail_width : width of thumbnail, default 90
 160      *   thumbnail_height : height of thumbnail, default 90
 161      *   thumbnail_alt : TODO not needed!
 162      *   description or thumbnail_title : alt text
 163      * @param array lazyloading : reference to the array with lazy loading images
 164      */
 165     Y.Node.prototype.fp_display_filelist = function(options, fileslist, lazyloading) {
 166         var viewmodeclassnames = {1:'fp-iconview', 2:'fp-treeview', 3:'fp-tableview'};
 167         var classname = viewmodeclassnames[options.viewmode];
 168         var scope = this;
 169         /** return whether file is a folder (different attributes in FileManager and FilePicker) */
 170         var file_is_folder = function(node) {
 171             if (node.children) {return true;}
 172             if (node.type && node.type == 'folder') {return true;}
 173             return false;
 174         };
 175         /** return the name of the file (different attributes in FileManager and FilePicker) */
 176         var file_get_filename = function(node) {
 177             return node.title ? node.title : node.fullname;
 178         }
 179         /** return display name of the file (different attributes in FileManager and FilePicker) */
 180         var file_get_displayname = function(node) {
 181             return node.shorttitle ? node.shorttitle : file_get_filename(node);
 182         }
 183         /** return file description (different attributes in FileManager and FilePicker) */
 184         var file_get_description = function(node) {
 185             return node.description ? node.description : (node.thumbnail_title ? node.thumbnail_title : file_get_filename(node));
 186         }
 187         /** help funciton for tree view */
 188         var build_tree = function(node, level) {
 189             // prepare file name with icon
 190             var el = Y.Node.create('<div/>');
 191             el.appendChild(options.filenode.cloneNode(true));
 192
 193             el.one('.fp-filename').setContent(file_get_displayname(node));
 194             // TODO add tooltip with node.title or node.thumbnail_title
 195             var tmpnodedata = {className:options.classnamecallback(node)};
 196             el.get('children').addClass(tmpnodedata.className);
 197             if (node.icon) {
 198                 el.one('.fp-icon').appendChild(Y.Node.create('<img/>'));
 199                 el.one('.fp-icon img').setImgSrc(node.icon, node.realicon, lazyloading);
 200             }
 201             // create node
 202             tmpnodedata.html = el.getContent();
 203             var tmpNode = new Y.YUI2.widget.HTMLNode(tmpnodedata, level, false);
 204             if (node.dynamicLoadComplete) {
 205                 tmpNode.dynamicLoadComplete = true;
 206             }
 207             tmpNode.fileinfo = node;
 208             tmpNode.isLeaf = !file_is_folder(node);
 209             if (!tmpNode.isLeaf) {
 210                 if(node.expanded) {
 211                     tmpNode.expand();
 212                 }
 213                 tmpNode.path = node.path ? node.path : (node.filepath ? node.filepath : '');
 214                 for(var c in node.children) {
 215                     build_tree(node.children[c], tmpNode);
 216                 }
 217             }
 218         };
 219         /** initialize tree view */
 220         var initialize_tree_view = function() {
 221             var parentid = scope.one('.'+classname).get('id');
 222             // TODO MDL-32736 use YUI3 gallery TreeView
 223             scope.treeview = new Y.YUI2.widget.TreeView(parentid);
 224             if (options.dynload) {
 225                 scope.treeview.setDynamicLoad(Y.bind(options.treeview_dynload, options.callbackcontext), 1);
 226             }
 227             scope.treeview.singleNodeHighlight = true;
 228             if (options.filepath && options.filepath.length) {
 229                 // we just jumped from icon/details view, we need to show all parents
 230                 // we extract as much information as possible from filepath and filelist
 231                 // and send additional requests to retrieve siblings for parent folders
 232                 var mytree = {};
 233                 var mytreeel = null;
 234                 for (var i in options.filepath) {
 235                     if (mytreeel == null) {
 236                         mytreeel = mytree;
 237                     } else {
 238                         mytreeel.children = [{}];
 239                         mytreeel = mytreeel.children[0];
 240                     }
 241                     var pathelement = options.filepath[i];
 242                     mytreeel.path = pathelement.path;
 243                     mytreeel.title = pathelement.name;
 244                     mytreeel.icon = pathelement.icon;
 245                     mytreeel.dynamicLoadComplete = true; // we will call it manually
 246                     mytreeel.expanded = true;
 247                 }
 248                 mytreeel.children = fileslist;
 249                 build_tree(mytree, scope.treeview.getRoot());
 250                 // manually call dynload for parent elements in the tree so we can load other siblings
 251                 if (options.dynload) {
 252                     var root = scope.treeview.getRoot();
 253                     while (root && root.children && root.children.length) {
 254                         root = root.children[0];
 255                         if (root.path == mytreeel.path) {
 256                             root.origpath = options.filepath;
 257                             root.origlist = fileslist;
 258                         } else if (!root.isLeaf && root.expanded) {
 259                             Y.bind(options.treeview_dynload, options.callbackcontext)(root, null);
 260                         }
 261                     }
 262                 }
 263             } else {
 264                 // there is no path information, just display all elements as a list, without hierarchy
 265                 for(k in fileslist) {
 266                     build_tree(fileslist[k], scope.treeview.getRoot());
 267                 }
 268             }
 269             scope.treeview.subscribe('clickEvent', function(e){
 270                 e.node.highlight(false);
 271                 var callback = options.callback;
 272                 if (options.rightclickcallback && e.event.target &&
 273                         Y.Node(e.event.target).ancestor('.fp-treeview .fp-contextmenu', true)) {
 274                     callback = options.rightclickcallback;
 275                 }
 276                 Y.bind(callback, options.callbackcontext)(e, e.node.fileinfo);
 277                 Y.YUI2.util.Event.stopEvent(e.event)
 278             });
 279             // TODO MDL-32736 support right click
 280             /*if (options.rightclickcallback) {
 281                 scope.treeview.subscribe('dblClickEvent', function(e){
 282                     e.node.highlight(false);
 283                     Y.bind(options.rightclickcallback, options.callbackcontext)(e, e.node.fileinfo);
 284                 });
 285             }*/
 286             scope.treeview.draw();
 287         };
 288         /** formatting function for table view */
 289         var formatValue = function (o){
 290             if (o.data[''+o.column.key+'_f_s']) {return o.data[''+o.column.key+'_f_s'];}
 291             else if (o.data[''+o.column.key+'_f']) {return o.data[''+o.column.key+'_f'];}
 292             else if (o.value) {return o.value;}
 293             else {return '';}
 294         };
 295         /** formatting function for table view */
 296         var formatTitle = function(o) {
 297             var el = Y.Node.create('<div/>');
 298             el.appendChild(options.filenode.cloneNode(true)); // TODO not node but string!
 299             el.get('children').addClass(o.data['classname']);
 300             el.one('.fp-filename').setContent(o.value);
 301             if (o.data['icon']) {
 302                 el.one('.fp-icon').appendChild(Y.Node.create('<img/>'));
 303                 el.one('.fp-icon img').setImgSrc(o.data['icon'], o.data['realicon'], lazyloading);
 304             }
 305             if (options.rightclickcallback) {
 306                 el.get('children').addClass('fp-hascontextmenu');
 307             }
 308             // TODO add tooltip with o.data['title'] (o.value) or o.data['thumbnail_title']
 309             return el.getContent();
 310         }
 311         /** sorting function for table view */
 312         var sortFoldersFirst = function(a, b, desc) {
 313             if (a.get('isfolder') && !b.get('isfolder')) {
 314                 return -1;
 315             }
 316             if (!a.get('isfolder') && b.get('isfolder')) {
 317                 return 1;
 318             }
 319             var aa = a.get(this.key), bb = b.get(this.key), dir = desc ? -1 : 1;
 320             return (aa > bb) ? dir : ((aa < bb) ? -dir : 0);
 321         }
 322         /** initialize table view */
 323         var initialize_table_view = function() {
 324             var cols = [
 325                 {key: "displayname", label: M.str.moodle.name, allowHTML: true, formatter: formatTitle,
 326                     sortable: true, sortFn: sortFoldersFirst},
 327                 {key: "datemodified", label: M.str.moodle.lastmodified, allowHTML: true, formatter: formatValue,
 328                     sortable: true, sortFn: sortFoldersFirst},
 329                 {key: "size", label: M.str.repository.size, allowHTML: true, formatter: formatValue,
 330                     sortable: true, sortFn: sortFoldersFirst},
 331                 {key: "mimetype", label: M.str.repository.type, allowHTML: true,
 332                     sortable: true, sortFn: sortFoldersFirst}
 333             ];
 334             for (var k in fileslist) {
 335                 // to speed up sorting and formatting
 336                 fileslist[k].displayname = file_get_displayname(fileslist[k]);
 337                 fileslist[k].isfolder = file_is_folder(fileslist[k]);
 338                 fileslist[k].classname = options.classnamecallback(fileslist[k]);
 339             }
 340             scope.tableview = new Y.DataTable({columns: cols, data: fileslist});
 341             scope.tableview.delegate('click', function (e, tableview) {
 342                 var record = tableview.getRecord(e.currentTarget.get('id'));
 343                 if (record) {
 344                     var callback = options.callback;
 345                     if (options.rightclickcallback && e.target.ancestor('.fp-tableview .fp-contextmenu', true)) {
 346                         callback = options.rightclickcallback;
 347                     }
 348                     Y.bind(callback, this)(e, record.getAttrs());
 349                 }
 350             }, 'tr', options.callbackcontext, scope.tableview);
 351             if (options.rightclickcallback) {
 352                 scope.tableview.delegate('contextmenu', function (e, tableview) {
 353                     var record = tableview.getRecord(e.currentTarget.get('id'));
 354                     if (record) { Y.bind(options.rightclickcallback, this)(e, record.getAttrs()); }
 355                 }, 'tr', options.callbackcontext, scope.tableview);
 356             }
 357         }
 358         /** append items in table view mode */
 359         var append_files_table = function() {
 360             var parentnode = scope.one('.'+classname);
 361             scope.tableview.render(parentnode);
 362             scope.tableview.sortable = options.sortable ? true : false;
 363         };
 364         /** append items in tree view mode */
 365         var append_files_tree = function() {
 366             if (options.appendonly) {
 367                 var parentnode = scope.treeview.getRoot();
 368                 if (scope.treeview.getHighlightedNode()) {
 369                     parentnode = scope.treeview.getHighlightedNode();
 370                     if (parentnode.isLeaf) {parentnode = parentnode.parent;}
 371                 }
 372                 for (var k in fileslist) {
 373                     build_tree(fileslist[k], parentnode);
 374                 }
 375                 scope.treeview.draw();
 376             } else {
 377                 // otherwise files were already added in initialize_tree_view()
 378             }
 379         }
 380         /** append items in icon view mode */
 381         var append_files_icons = function() {
 382             parent = scope.one('.'+classname);
 383             for (var k in fileslist) {
 384                 var node = fileslist[k];
 385                 var element = options.filenode.cloneNode(true);
 386                 parent.appendChild(element);
 387                 element.addClass(options.classnamecallback(node));
 388                 var filenamediv = element.one('.fp-filename');
 389                 filenamediv.setContent(file_get_displayname(node));
 390                 var imgdiv = element.one('.fp-thumbnail'), width, height, src;
 391                 if (node.thumbnail) {
 392                     width = node.thumbnail_width ? node.thumbnail_width : 90;
 393                     height = node.thumbnail_height ? node.thumbnail_height : 90;
 394                     src = node.thumbnail;
 395                 } else {
 396                     width = 16;
 397                     height = 16;
 398                     src = node.icon;
 399                 }
 400                 filenamediv.setStyleAdv('width', width);
 401                 imgdiv.setStyleAdv('width', width).setStyleAdv('height', height);
 402                 var img = Y.Node.create('<img/>').setAttrs({
 403                         title: file_get_description(node),
 404                         alt: node.thumbnail_alt ? node.thumbnail_alt : file_get_filename(node)}).
 405                     setStyle('maxWidth', ''+width+'px').
 406                     setStyle('maxHeight', ''+height+'px');
 407                 img.setImgSrc(src, node.realthumbnail, lazyloading);
 408                 imgdiv.appendChild(img);
 409                 element.on('click', function(e, nd) {
 410                     if (options.rightclickcallback && e.target.ancestor('.fp-iconview .fp-contextmenu', true)) {
 411                         Y.bind(options.rightclickcallback, this)(e, nd);
 412                     } else {
 413                         Y.bind(options.callback, this)(e, nd);
 414                     }
 415                 }, options.callbackcontext, node);
 416                 if (options.rightclickcallback) {
 417                     element.on('contextmenu', options.rightclickcallback, options.callbackcontext, node);
 418                 }
 419             }
 420         }
 421
 422         // initialize files view
 423         if (!options.appendonly) {
 424             var parent = Y.Node.create('<div/>').addClass(classname);
 425             this.setContent('').appendChild(parent);
 426             parent.generateID();
 427             if (options.viewmode == 2) {
 428                 initialize_tree_view();
 429             } else if (options.viewmode == 3) {
 430                 initialize_table_view();
 431             } else {
 432                 // nothing to initialize for icon view
 433             }
 434         }
 435
 436         // append files to the list
 437         if (options.viewmode == 2) {
 438             append_files_tree();
 439         } else if (options.viewmode == 3) {
 440             append_files_table();
 441         } else {
 442             append_files_icons();
 443         }
 444
 445     }
 446
 447     /**
 448      * creates a node and adds it to the div with id #filesskin. This is needed for CSS to be able
 449      * to overwrite YUI skin styles (instead of using !important that does not work in IE)
 450      */
 451     Y.Node.createWithFilesSkin = function(node) {
 452         if (!Y.one('#filesskin')) {
 453             Y.one(document.body).appendChild(Y.Node.create('<div/>').set('id', 'filesskin'));
 454         }
 455         return Y.one('#filesskin').appendChild(Y.Node.create(node));
 456     }
 457 }, '@VERSION@', {
 458     requires:['base', 'node', 'yui2-treeview', 'panel', 'cookie', 'datatable', 'datatable-sort']
 459 });
 460
 461 M.core_filepicker = M.core_filepicker || {};
 462
 463 /**
 464  * instances of file pickers used on page
 465  */
 466 M.core_filepicker.instances = M.core_filepicker.instances || {};
 467 M.core_filepicker.active_filepicker = null;
 468
 469 /**
 470  * HTML Templates to use in FilePicker
 471  */
 472 M.core_filepicker.templates = M.core_filepicker.templates || {};
 473
 474 /**
 475  * Array of image sources for real previews (realicon or realthumbnail) that are already loaded
 476  */
 477 M.core_filepicker.loadedpreviews = M.core_filepicker.loadedpreviews || {};
 478
 479 /**
 480 * Set selected file info
 481 *
 482 * @parma object file info
 483 */
 484 M.core_filepicker.select_file = function(file) {
 485     M.core_filepicker.active_filepicker.select_file(file);
 486 }
 487
 488 /**
 489  * Init and show file picker
 490  */
 491 M.core_filepicker.show = function(Y, options) {
 492     if (!M.core_filepicker.instances[options.client_id]) {
 493         M.core_filepicker.init(Y, options);
 494     }
 495     M.core_filepicker.instances[options.client_id].show();
 496 };
 497
 498 M.core_filepicker.set_templates = function(Y, templates) {
 499     for (var templid in templates) {
 500         M.core_filepicker.templates[templid] = templates[templid];
 501     }
 502 }
 503
 504 /**
 505  * Add new file picker to current instances
 506  */
 507 M.core_filepicker.init = function(Y, options) {
 508     var FilePickerHelper = function(options) {
 509         FilePickerHelper.superclass.constructor.apply(this, arguments);
 510     };
 511
 512     FilePickerHelper.NAME = "FilePickerHelper";
 513     FilePickerHelper.ATTRS = {
 514         options: {},
 515         lang: {}
 516     };
 517
 518     Y.extend(FilePickerHelper, Y.Base, {
 519         api: M.cfg.wwwroot+'/repository/repository_ajax.php',
 520         cached_responses: {},
 521         waitinterval : null, // When the loading template is being displayed and its animation is running this will be an interval instance.
 522         initializer: function(options) {
 523             this.options = options;
 524             if (!this.options.savepath) {
 525                 this.options.savepath = '/';
 526             }
 527         },
 528
 529         destructor: function() {
 530         },
 531
 532         request: function(args, redraw) {
 533             var api = (args.api ? args.api : this.api) + '?action='+args.action;
 534             var params = {};
 535             var scope = args['scope'] ? args['scope'] : this;
 536             params['repo_id']=args.repository_id;
 537             params['p'] = args.path?args.path:'';
 538             params['page'] = args.page?args.page:'';
 539             params['env']=this.options.env;
 540             // the form element only accept certain file types
 541             params['accepted_types']=this.options.accepted_types;
 542             params['sesskey'] = M.cfg.sesskey;
 543             params['client_id'] = args.client_id;
 544             params['itemid'] = this.options.itemid?this.options.itemid:0;
 545             params['maxbytes'] = this.options.maxbytes?this.options.maxbytes:-1;
 546             // The unlimited value of areamaxbytes is -1, it is defined by FILE_AREA_MAX_BYTES_UNLIMITED.
 547             params['areamaxbytes'] = this.options.areamaxbytes ? this.options.areamaxbytes : -1;
 548             if (this.options.context && this.options.context.id) {
 549                 params['ctx_id'] = this.options.context.id;
 550             }
 551             if (args['params']) {
 552                 for (i in args['params']) {
 553                     params[i] = args['params'][i];
 554                 }
 555             }
 556             if (args.action == 'upload') {
 557                 var list = [];
 558                 for(var k in params) {
 559                     var value = params[k];
 560                     if(value instanceof Array) {
 561                         for(var i in value) {
 562                             list.push(k+'[]='+value[i]);
 563                         }
 564                     } else {
 565                         list.push(k+'='+value);
 566                     }
 567                 }
 568                 params = list.join('&');
 569             } else {
 570                 params = build_querystring(params);
 571             }
 572             var cfg = {
 573                 method: 'POST',
 574                 on: {
 575                     complete: function(id,o,p) {
 576                         if (!o) {
 577                             // TODO
 578                             alert('IO FATAL');
 579                             return;
 580                         }
 581                         var data = null;
 582                         try {
 583                             data = Y.JSON.parse(o.responseText);
 584                         } catch(e) {
 585                             scope.print_msg(M.str.repository.invalidjson, 'error');
 586                             scope.display_error(M.str.repository.invalidjson+'<pre>'+stripHTML(o.responseText)+'</pre>', 'invalidjson')
 587                             return;
 588                         }
 589                         // error checking
 590                         if (data && data.error) {
 591                             scope.print_msg(data.error, 'error');
 592                             if (args.onerror) {
 593                                 args.onerror(id,data,p);
 594                             } else {
 595                                 this.fpnode.one('.fp-content').setContent('');
 596                             }
 597                             return;
 598                         } else {
 599                             if (data.msg) {
 600                                 scope.print_msg(data.msg, 'info');
 601                             }
 602                             // cache result if applicable
 603                             if (args.action != 'upload' && data.allowcaching) {
 604                                 scope.cached_responses[params] = data;
 605                             }
 606                             // invoke callback
 607                             args.callback(id,data,p);
 608                         }
 609                     }
 610                 },
 611                 arguments: {
 612                     scope: scope
 613                 },
 614                 headers: {
 615                     'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
 616                 },
 617                 data: params,
 618                 context: this
 619             };
 620             if (args.form) {
 621                 cfg.form = args.form;
 622             }
 623             // check if result of the same request has been already cached. If not, request it
 624             // (never applicable in case of form submission and/or upload action):
 625             if (!args.form && args.action != 'upload' && scope.cached_responses[params]) {
 626                 args.callback(null, scope.cached_responses[params], {scope: scope})
 627             } else {
 628                 Y.io(api, cfg);
 629                 if (redraw) {
 630                     this.wait();
 631                 }
 632             }
 633         },
 634         /** displays the dialog and processes rename/overwrite if there is a file with the same name in the same filearea*/
 635         process_existing_file: function(data) {
 636             var scope = this;
 637             var handleOverwrite = function(e) {
 638                 // overwrite
 639                 e.preventDefault();
 640                 var data = this.process_dlg.dialogdata;
 641                 var params = {}
 642                 params['existingfilename'] = data.existingfile.filename;
 643                 params['existingfilepath'] = data.existingfile.filepath;
 644                 params['newfilename'] = data.newfile.filename;
 645                 params['newfilepath'] = data.newfile.filepath;
 646                 this.hide_header();
 647                 this.request({
 648                     'params': params,
 649                     'scope': this,
 650                     'action':'overwrite',
 651                     'path': '',
 652                     'client_id': this.options.client_id,
 653                     'repository_id': this.active_repo.id,
 654                     'callback': function(id, o, args) {
 655                         scope.hide();
 656                         // editor needs to update url
 657                         // filemanager do nothing
 658                         if (scope.options.editor_target && scope.options.env == 'editor') {
 659                             scope.options.editor_target.value = data.existingfile.url;
 660                             scope.options.editor_target.onchange();
 661                         } else if (scope.options.env === 'filepicker') {
 662                             var fileinfo = {'client_id':scope.options.client_id,
 663                                     'url':data.existingfile.url,
 664                                     'file':data.existingfile.filename};
 665                             var formcallback_scope = scope.options.magicscope ? scope.options.magicscope : scope;
 666                             scope.options.formcallback.apply(formcallback_scope, [fileinfo]);
 667                         }
 668                     }
 669                 }, true);
 670             }
 671             var handleRename = function(e) {
 672                 // inserts file with the new name
 673                 e.preventDefault();
 674                 var scope = this;
 675                 var data = this.process_dlg.dialogdata;
 676                 if (scope.options.editor_target && scope.options.env == 'editor') {
 677                     scope.options.editor_target.value = data.newfile.url;
 678                     scope.options.editor_target.onchange();
 679                 }
 680                 scope.hide();
 681                 var formcallback_scope = scope.options.magicscope ? scope.options.magicscope : scope;
 682                 var fileinfo = {'client_id':scope.options.client_id,
 683                                 'url':data.newfile.url,
 684                                 'file':data.newfile.filename};
 685                 scope.options.formcallback.apply(formcallback_scope, [fileinfo]);
 686             }
 687             var handleCancel = function(e) {
 688                 // Delete tmp file
 689                 e.preventDefault();
 690                 var params = {};
 691                 params['newfilename'] = this.process_dlg.dialogdata.newfile.filename;
 692                 params['newfilepath'] = this.process_dlg.dialogdata.newfile.filepath;
 693                 this.request({
 694                     'params': params,
 695                     'scope': this,
 696                     'action':'deletetmpfile',
 697                     'path': '',
 698                     'client_id': this.options.client_id,
 699                     'repository_id': this.active_repo.id,
 700                     'callback': function(id, o, args) {
 701                         // let it be in background, from user point of view nothing is happenning
 702                     }
 703                 }, false);
 704                 this.process_dlg.hide();
 705                 this.selectui.hide();
 706             }
 707             if (!this.process_dlg) {
 708                 this.process_dlg_node = Y.Node.createWithFilesSkin(M.core_filepicker.templates.processexistingfile);
 709                 var node = this.process_dlg_node;
 710                 node.generateID();
 711                 this.process_dlg = new Y.Panel({
 712                     srcNode      : node,
 713                     headerContent: M.str.repository.fileexistsdialogheader,
 714                     zIndex       : 8000,
 715                     centered     : true,
 716                     modal        : true,
 717                     visible      : false,
 718                     render       : true,
 719                     buttons      : {}
 720                 });
 721                 this.process_dlg.plug(Y.Plugin.Drag,{handles:['#'+node.get('id')+' .yui3-widget-hd']});
 722                 node.one('.fp-dlg-butoverwrite').on('click', handleOverwrite, this);
 723                 node.one('.fp-dlg-butrename').on('click', handleRename, this);
 724                 node.one('.fp-dlg-butcancel').on('click', handleCancel, this);
 725                 if (this.options.env == 'editor') {
 726                     node.one('.fp-dlg-text').setContent(M.str.repository.fileexistsdialog_editor);
 727                 } else {
 728                     node.one('.fp-dlg-text').setContent(M.str.repository.fileexistsdialog_filemanager);
 729                 }
 730             }
 731             this.selectnode.removeClass('loading');
 732             this.process_dlg.dialogdata = data;
 733             this.process_dlg_node.one('.fp-dlg-butrename').setContent(M.util.get_string('renameto', 'repository', data.newfile.filename));
 734             this.process_dlg.show();
 735         },
 736         /** displays error instead of filepicker contents */
 737         display_error: function(errortext, errorcode) {
 738             this.fpnode.one('.fp-content').setContent(M.core_filepicker.templates.error);
 739             this.fpnode.one('.fp-content .fp-error').
 740                 addClass(errorcode).
 741                 setContent(errortext);
 742         },
 743         /** displays message in a popup */
 744         print_msg: function(msg, type) {
 745             var header = M.str.moodle.error;
 746             if (type != 'error') {
 747                 type = 'info'; // one of only two types excepted
 748                 header = M.str.moodle.info;
 749             }
 750             if (!this.msg_dlg) {
 751                 this.msg_dlg_node = Y.Node.createWithFilesSkin(M.core_filepicker.templates.message);
 752                 this.msg_dlg_node.generateID();
 753
 754                 this.msg_dlg = new Y.Panel({
 755                     srcNode      : this.msg_dlg_node,
 756                     zIndex       : 8000,
 757                     centered     : true,
 758                     modal        : true,
 759                     visible      : false,
 760                     render       : true
 761                 });
 762                 this.msg_dlg.plug(Y.Plugin.Drag,{handles:['#'+this.msg_dlg_node.get('id')+' .yui3-widget-hd']});
 763                 this.msg_dlg_node.one('.fp-msg-butok').on('click', function(e) {
 764                     e.preventDefault();
 765                     this.msg_dlg.hide();
 766                 }, this);
 767             }
 768
 769             this.msg_dlg.set('headerContent', header);
 770             this.msg_dlg_node.removeClass('fp-msg-info').removeClass('fp-msg-error').addClass('fp-msg-'+type)
 771             this.msg_dlg_node.one('.fp-msg-text').setContent(msg);
 772             this.msg_dlg.show();
 773         },
 774         view_files: function(appenditems) {
 775             this.viewbar_set_enabled(true);
 776             this.print_path();
 777             /*if ((appenditems == null) && (!this.filelist || !this.filelist.length) && !this.active_repo.hasmorepages) {
 778              // TODO do it via classes and adjust for each view mode!
 779                 // If there are no items and no next page, just display status message and quit
 780                 this.display_error(M.str.repository.nofilesavailable, 'nofilesavailable');
 781                 return;
 782             }*/
 783             if (this.viewmode == 2) {
 784                 this.view_as_list(appenditems);
 785             } else if (this.viewmode == 3) {
 786                 this.view_as_table(appenditems);
 787             } else {
 788                 this.view_as_icons(appenditems);
 789             }
 790             // display/hide the link for requesting next page
 791             if (!appenditems && this.active_repo.hasmorepages) {
 792                 if (!this.fpnode.one('.fp-content .fp-nextpage')) {
 793                     this.fpnode.one('.fp-content').append(M.core_filepicker.templates.nextpage);
 794                 }
 795                 this.fpnode.one('.fp-content .fp-nextpage').one('a,button').on('click', function(e) {
 796                     e.preventDefault();
 797                     this.fpnode.one('.fp-content .fp-nextpage').addClass('loading');
 798                     this.request_next_page();
 799                 }, this);
 800             }
 801             if (!this.active_repo.hasmorepages && this.fpnode.one('.fp-content .fp-nextpage')) {
 802                 this.fpnode.one('.fp-content .fp-nextpage').remove();
 803             }
 804             if (this.fpnode.one('.fp-content .fp-nextpage')) {
 805                 this.fpnode.one('.fp-content .fp-nextpage').removeClass('loading');
 806             }
 807             this.content_scrolled();
 808         },
 809         content_scrolled: function(e) {
 810             setTimeout(Y.bind(function() {
 811                 if (this.processingimages) {
 812                     return;
 813                 }
 814                 this.processingimages = true;
 815                 var scope = this,
 816                     fpcontent = this.fpnode.one('.fp-content'),
 817                     fpcontenty = fpcontent.getY(),
 818                     fpcontentheight = fpcontent.getStylePx('height'),
 819                     nextpage = fpcontent.one('.fp-nextpage'),
 820                     is_node_visible = function(node) {
 821                         var offset = node.getY()-fpcontenty;
 822                         if (offset <= fpcontentheight && (offset >=0 || offset+node.getStylePx('height')>=0)) {
 823                             return true;
 824                         }
 825                         return false;
 826                     };
 827                 // automatically load next page when 'more' link becomes visible
 828                 if (nextpage && !nextpage.hasClass('loading') && is_node_visible(nextpage)) {
 829                     nextpage.one('a,button').simulate('click');
 830                 }
 831                 // replace src for visible images that need to be lazy-loaded
 832                 if (scope.lazyloading) {
 833                     fpcontent.all('img').each( function(node) {
 834                         if (node.get('id') && scope.lazyloading[node.get('id')] && is_node_visible(node)) {
 835                             node.setImgRealSrc(scope.lazyloading);
 836                         }
 837                     });
 838                 }
 839                 this.processingimages = false;
 840             }, this), 200)
 841         },
 842         treeview_dynload: function(node, cb) {
 843             var retrieved_children = {};
 844             if (node.children) {
 845                 for (var i in node.children) {
 846                     retrieved_children[node.children[i].path] = node.children[i];
 847                 }
 848             }
 849             this.request({
 850                 action:'list',
 851                 client_id: this.options.client_id,
 852                 repository_id: this.active_repo.id,
 853                 path:node.path?node.path:'',
 854                 page:node.page?args.page:'',
 855                 scope:this,
 856                 callback: function(id, obj, args) {
 857                     var list = obj.list;
 858                     var scope = args.scope;
 859                     // check that user did not leave the view mode before recieving this response
 860                     if (!(scope.active_repo.id == obj.repo_id && scope.viewmode == 2 && node && node.getChildrenEl())) {
 861                         return;
 862                     }
 863                     if (cb != null) { // (in manual mode do not update current path)
 864                         scope.viewbar_set_enabled(true);
 865                         scope.parse_repository_options(obj);
 866                     }
 867                     node.highlight(false);
 868                     node.origlist = obj.list ? obj.list : null;
 869                     node.origpath = obj.path ? obj.path : null;
 870                     node.children = [];
 871                     for(k in list) {
 872                         if (list[k].children && retrieved_children[list[k].path]) {
 873                             // if this child is a folder and has already been retrieved
 874                             node.children[node.children.length] = retrieved_children[list[k].path];
 875                         } else {
 876                             // append new file to the list
 877                             scope.view_as_list([list[k]]);
 878                         }
 879                     }
 880                     if (cb == null) {
 881                         node.refresh();
 882                     } else {
 883                         // invoke callback requested by TreeView component
 884                         cb();
 885                     }
 886                     scope.content_scrolled();
 887                 }
 888             }, false);
 889         },
 890        classnamecallback : function(node) {
 891             var classname = '';
 892             if (node.children) {
 893                 classname = classname + ' fp-folder';
 894             }
 895             if (node.isref) {
 896                 classname = classname + ' fp-isreference';
 897             }
 898             if (node.refcount) {
 899                 classname = classname + ' fp-hasreferences';
 900             }
 901             if (node.originalmissing) {
 902                 classname = classname + ' fp-originalmissing';
 903             }
 904             return Y.Lang.trim(classname);
 905         },
 906         /** displays list of files in tree (list) view mode. If param appenditems is specified,
 907          * appends those items to the end of the list. Otherwise (default behaviour)
 908          * clears the contents and displays the items from this.filelist */
 909         view_as_list: function(appenditems) {
 910             var list = (appenditems != null) ? appenditems : this.filelist;
 911             this.viewmode = 2;
 912             if (!this.filelist || this.filelist.length==0 && (!this.filepath || !this.filepath.length)) {
 913                 this.display_error(M.str.repository.nofilesavailable, 'nofilesavailable');
 914                 return;
 915             }
 916
 917             var element_template = Y.Node.create(M.core_filepicker.templates.listfilename);
 918             var options = {
 919                 viewmode : this.viewmode,
 920                 appendonly : (appenditems != null),
 921                 filenode : element_template,
 922                 callbackcontext : this,
 923                 callback : function(e, node) {
 924                     // TODO MDL-32736 e is not an event here but an object with properties 'event' and 'node'
 925                     if (!node.children) {
 926                         if (e.node.parent && e.node.parent.origpath) {
 927                             // set the current path
 928                             this.filepath = e.node.parent.origpath;
 929                             this.filelist = e.node.parent.origlist;
 930                             this.print_path();
 931                         }
 932                         this.select_file(node);
 933                     } else {
 934                         // save current path and filelist (in case we want to jump to other viewmode)
 935                         this.filepath = e.node.origpath;
 936                         this.filelist = e.node.origlist;
 937                         this.currentpath = e.node.path;
 938                         this.print_path();
 939                         this.content_scrolled();
 940                     }
 941                 },
 942                 classnamecallback : this.classnamecallback,
 943                 dynload : this.active_repo.dynload,
 944                 filepath : this.filepath,
 945                 treeview_dynload : this.treeview_dynload
 946             };
 947             this.fpnode.one('.fp-content').fp_display_filelist(options, list, this.lazyloading);
 948         },
 949         /** displays list of files in icon view mode. If param appenditems is specified,
 950          * appends those items to the end of the list. Otherwise (default behaviour)
 951          * clears the contents and displays the items from this.filelist */
 952         view_as_icons: function(appenditems) {
 953             this.viewmode = 1;
 954             var list = (appenditems != null) ? appenditems : this.filelist;
 955             var element_template = Y.Node.create(M.core_filepicker.templates.iconfilename);
 956             if ((appenditems == null) && (!this.filelist || !this.filelist.length)) {
 957                 this.display_error(M.str.repository.nofilesavailable, 'nofilesavailable');
 958                 return;
 959             }
 960             var options = {
 961                 viewmode : this.viewmode,
 962                 appendonly : (appenditems != null),
 963                 filenode : element_template,
 964                 callbackcontext : this,
 965                 callback : function(e, node) {
 966                     if (e.preventDefault) {
 967                         e.preventDefault();
 968                     }
 969                     if(node.children) {
 970                         if (this.active_repo.dynload) {
 971                             this.list({'path':node.path});
 972                         } else {
 973                             this.filelist = node.children;
 974                             this.view_files();
 975                         }
 976                     } else {
 977                         this.select_file(node);
 978                     }
 979                 },
 980                 classnamecallback : this.classnamecallback
 981             };
 982             this.fpnode.one('.fp-content').fp_display_filelist(options, list, this.lazyloading);
 983         },
 984         /** displays list of files in table view mode. If param appenditems is specified,
 985          * appends those items to the end of the list. Otherwise (default behaviour)
 986          * clears the contents and displays the items from this.filelist */
 987         view_as_table: function(appenditems) {
 988             this.viewmode = 3;
 989             var list = (appenditems != null) ? appenditems : this.filelist;
 990             if (!appenditems && (!this.filelist || this.filelist.length==0) && !this.active_repo.hasmorepages) {
 991                 this.display_error(M.str.repository.nofilesavailable, 'nofilesavailable');
 992                 return;
 993             }
 994             var element_template = Y.Node.create(M.core_filepicker.templates.listfilename);
 995             var options = {
 996                 viewmode : this.viewmode,
 997                 appendonly : (appenditems != null),
 998                 filenode : element_template,
 999                 callbackcontext : this,
1000                 sortable : !this.active_repo.hasmorepages,
1001                 callback : function(e, node) {
1002                     if (e.preventDefault) {e.preventDefault();}
1003                     if (node.children) {
1004                         if (this.active_repo.dynload) {
1005                             this.list({'path':node.path});
1006                         } else {
1007                             this.filelist = node.children;
1008                             this.view_files();
1009                         }
1010                     } else {
1011                         this.select_file(node);
1012                     }
1013                 },
1014                 classnamecallback : this.classnamecallback
1015             };
1016             this.fpnode.one('.fp-content').fp_display_filelist(options, list, this.lazyloading);
1017         },
1018         /** If more than one page available, requests and displays the files from the next page */
1019         request_next_page: function() {
1020             if (!this.active_repo.hasmorepages || this.active_repo.nextpagerequested) {
1021                 // nothing to load
1022                 return;
1023             }
1024             this.active_repo.nextpagerequested = true;
1025             var nextpage = this.active_repo.page+1;
1026             var args = {
1027                 page: nextpage,
1028                 repo_id: this.active_repo.id
1029             };
1030             var action = this.active_repo.issearchresult ? 'search' : 'list';
1031             this.request({
1032                 path: this.currentpath,
1033                 scope: this,
1034                 action: action,
1035                 client_id: this.options.client_id,
1036                 repository_id: args.repo_id,
1037                 params: args,
1038                 callback: function(id, obj, args) {
1039                     var scope = args.scope;
1040                     // Check that we are still in the same repository and are expecting this page. We have no way
1041                     // to compare the requested page and the one returned, so we assume that if the last chunk
1042                     // of the breadcrumb is similar, then we probably are on the same page.
1043                     var samepage = true;
1044                     if (obj.path && scope.filepath) {
1045                         var pathbefore = scope.filepath[scope.filepath.length-1];
1046                         var pathafter = obj.path[obj.path.length-1];
1047                         if (pathbefore.path != pathafter.path) {
1048                             samepage = false;
1049                         }
1050                     }
1051                     if (scope.active_repo.hasmorepages && obj.list && obj.page &&
1052                             obj.repo_id == scope.active_repo.id &&
1053                             obj.page == scope.active_repo.page+1 && samepage) {
1054                         scope.parse_repository_options(obj, true);
1055                         scope.view_files(obj.list)
1056                     }
1057                 }
1058             }, false);
1059         },
1060         select_file: function(args) {
1061             this.selectui.show();
1062             var client_id = this.options.client_id;
1063             var selectnode = this.selectnode;
1064             var return_types = this.options.repositories[this.active_repo.id].return_types;
1065             selectnode.removeClass('loading');
1066             selectnode.one('.fp-saveas input').set('value', args.title);
1067
1068             var imgnode = Y.Node.create('<img/>').
1069                 set('src', args.realthumbnail ? args.realthumbnail : args.thumbnail).
1070                 setStyle('maxHeight', ''+(args.thumbnail_height ? args.thumbnail_height : 90)+'px').
1071                 setStyle('maxWidth', ''+(args.thumbnail_width ? args.thumbnail_width : 90)+'px');
1072             selectnode.one('.fp-thumbnail').setContent('').appendChild(imgnode);
1073
1074             // filelink is the array of file-link-types available for this repository in this env
1075             var filelinktypes = [2/*FILE_INTERNAL*/,1/*FILE_EXTERNAL*/,4/*FILE_REFERENCE*/];
1076             var filelink = {}, firstfilelink = null, filelinkcount = 0;
1077             for (var i in filelinktypes) {
1078                 var allowed = (return_types & filelinktypes[i]) &&
1079                     (this.options.return_types & filelinktypes[i]);
1080                 if (filelinktypes[i] == 1/*FILE_EXTERNAL*/ && !this.options.externallink && this.options.env == 'editor') {
1081                     // special configuration setting 'repositoryallowexternallinks' may prevent
1082                     // using external links in editor environment
1083                     allowed = false;
1084                 }
1085                 filelink[filelinktypes[i]] = allowed;
1086                 firstfilelink = (firstfilelink==null && allowed) ? filelinktypes[i] : firstfilelink;
1087                 filelinkcount += allowed ? 1 : 0;
1088             }
1089             // make radio buttons enabled if this file-link-type is available and only if there are more than one file-link-type option
1090             // check the first available file-link-type option
1091             for (var linktype in filelink) {
1092                 var el = selectnode.one('.fp-linktype-'+linktype);
1093                 el.addClassIf('uneditable', !(filelink[linktype] && filelinkcount>1));
1094                 el.one('input').set('disabled', (filelink[linktype] && filelinkcount>1) ? '' : 'disabled').
1095                     set('checked', (firstfilelink == linktype) ? 'checked' : '').simulate('change')
1096             }
1097
1098             // TODO MDL-32532: attributes 'hasauthor' and 'haslicense' need to be obsolete,
1099             selectnode.one('.fp-setauthor input').set('value', args.author ? args.author : this.options.author);
1100             this.set_selected_license(selectnode.one('.fp-setlicense'), args.license);
1101             selectnode.one('form #filesource-'+client_id).set('value', args.source);
1102
1103             // display static information about a file (when known)
1104             var attrs = ['datemodified','datecreated','size','license','author','dimensions'];
1105             for (var i in attrs) {
1106                 if (selectnode.one('.fp-'+attrs[i])) {
1107                     var value = (args[attrs[i]+'_f']) ? args[attrs[i]+'_f'] : (args[attrs[i]] ? args[attrs[i]] : '');
1108                     selectnode.one('.fp-'+attrs[i]).addClassIf('fp-unknown', ''+value == '')
1109                         .one('.fp-value').setContent(value);
1110                 }
1111             }
1112         },
1113         setup_select_file: function() {
1114             var client_id = this.options.client_id;
1115             var selectnode = this.selectnode;
1116             var getfile = selectnode.one('.fp-select-confirm');
1117             // bind labels with corresponding inputs
1118             selectnode.all('.fp-saveas,.fp-linktype-2,.fp-linktype-1,.fp-linktype-4,.fp-setauthor,.fp-setlicense').each(function (node) {
1119                 node.all('label').set('for', node.one('input,select').generateID());
1120             });
1121             selectnode.one('.fp-linktype-2 input').setAttrs({value: 2, name: 'linktype'});
1122             selectnode.one('.fp-linktype-1 input').setAttrs({value: 1, name: 'linktype'});
1123             selectnode.one('.fp-linktype-4 input').setAttrs({value: 4, name: 'linktype'});
1124             var changelinktype = function(e) {
1125                 if (e.currentTarget.get('checked')) {
1126                     var allowinputs = e.currentTarget.get('value') != 1/*FILE_EXTERNAL*/;
1127                     selectnode.all('.fp-setauthor,.fp-setlicense,.fp-saveas').each(function(node){
1128                         node.addClassIf('uneditable', !allowinputs);
1129                         node.all('input,select').set('disabled', allowinputs?'':'disabled');
1130                     });
1131                 }
1132             };
1133             selectnode.all('.fp-linktype-2,.fp-linktype-1,.fp-linktype-4').each(function (node) {
1134                 node.one('input').on('change', changelinktype, this);
1135             });
1136             this.populate_licenses_select(selectnode.one('.fp-setlicense select'));
1137             // register event on clicking submit button
1138             getfile.on('click', function(e) {
1139                 e.preventDefault();
1140                 var client_id = this.options.client_id;
1141                 var scope = this;
1142                 var repository_id = this.active_repo.id;
1143                 var title = selectnode.one('.fp-saveas input').get('value');
1144                 var filesource = selectnode.one('form #filesource-'+client_id).get('value');
1145                 var params = {'title':title, 'source':filesource, 'savepath': this.options.savepath};
1146                 var license = selectnode.one('.fp-setlicense select');
1147                 if (license) {
1148                     params['license'] = license.get('value');
1149                     var origlicense = selectnode.one('.fp-license .fp-value');
1150                     if (origlicense) {
1151                         origlicense = origlicense.getContent();
1152                     }
1153                     this.set_preference('recentlicense', license.get('value'));
1154                 }
1155                 params['author'] = selectnode.one('.fp-setauthor input').get('value');
1156
1157                 var return_types = this.options.repositories[this.active_repo.id].return_types;
1158                 if (this.options.env == 'editor') {
1159                     // in editor, images are stored in '/' only
1160                     params.savepath = '/';
1161                 }
1162                 if ((this.options.externallink || this.options.env != 'editor') &&
1163                             (return_types & 1/*FILE_EXTERNAL*/) &&
1164                             (this.options.return_types & 1/*FILE_EXTERNAL*/) &&
1165                             selectnode.one('.fp-linktype-1 input').get('checked')) {
1166                     params['linkexternal'] = 'yes';
1167                 } else if ((return_types & 4/*FILE_REFERENCE*/) &&
1168                         (this.options.return_types & 4/*FILE_REFERENCE*/) &&
1169                         selectnode.one('.fp-linktype-4 input').get('checked')) {
1170                     params['usefilereference'] = '1';
1171                 }
1172
1173                 selectnode.addClass('loading');
1174                 this.request({
1175                     action:'download',
1176                     client_id: client_id,
1177                     repository_id: repository_id,
1178                     'params': params,
1179                     onerror: function(id, obj, args) {
1180                         selectnode.removeClass('loading');
1181                         scope.selectui.hide();
1182                     },
1183                     callback: function(id, obj, args) {
1184                         selectnode.removeClass('loading');
1185                         if (obj.event == 'fileexists') {
1186                             scope.process_existing_file(obj);
1187                             return;
1188                         }
1189                         if (scope.options.editor_target && scope.options.env=='editor') {
1190                             scope.options.editor_target.value=obj.url;
1191                             scope.options.editor_target.onchange();
1192                         }
1193                         scope.hide();
1194                         obj.client_id = client_id;
1195                         var formcallback_scope = args.scope.options.magicscope ? args.scope.options.magicscope : args.scope;
1196                         scope.options.formcallback.apply(formcallback_scope, [obj]);
1197                     }
1198                 }, false);
1199             }, this);
1200             var elform = selectnode.one('form');
1201             elform.appendChild(Y.Node.create('<input/>').
1202                 setAttrs({type:'hidden',id:'filesource-'+client_id}));
1203             elform.on('keydown', function(e) {
1204                 if (e.keyCode == 13) {
1205                     getfile.simulate('click');
1206                     e.preventDefault();
1207                 }
1208             }, this);
1209             var cancel = selectnode.one('.fp-select-cancel');
1210             cancel.on('click', function(e) {
1211                 e.preventDefault();
1212                 this.selectui.hide();
1213             }, this);
1214         },
1215         wait: function() {
1216             // First check there isn't already an interval in play, and if there is kill it now.
1217             if (this.waitinterval != null) {
1218                 clearInterval(this.waitinterval);
1219             }
1220             // Prepare the root node we will set content for and the loading template we want to display as a YUI node.
1221             var root = this.fpnode.one('.fp-content');
1222             var content = Y.Node.create(M.core_filepicker.templates.loading).addClass('fp-content-hidden').setStyle('opacity', 0);
1223             var count = 0;
1224             // Initiate an interval, we will have a count which will increment every 100 milliseconds.
1225             // Count 0 - the loading icon will have visibility set to hidden (invisible) and have an opacity of 0 (invisible also)
1226             // Count 5 - the visiblity will be switched to visible but opacity will still be at 0 (inivisible)
1227             // Counts 6 - 15 opacity will be increased by 0.1 making the loading icon visible over the period of a second
1228             // Count 16 - The interval will be cancelled.
1229             var interval = setInterval(function(){
1230                 if (!content || !root.contains(content) || count >= 15) {
1231                     clearInterval(interval);
1232                     return true;
1233                 }
1234                 if (count == 5) {
1235                     content.removeClass('fp-content-hidden');
1236                 } else if (count > 5) {
1237                     var opacity = parseFloat(content.getStyle('opacity'));
1238                     content.setStyle('opacity', opacity + 0.1);
1239                 }
1240                 count++;
1241                 return false;
1242             }, 100);
1243             // Store the wait interval so that we can check it in the future.
1244             this.waitinterval = interval;
1245             // Set the content to the loading template.
1246             root.setContent(content);
1247         },
1248         viewbar_set_enabled: function(mode) {
1249             var viewbar = this.fpnode.one('.fp-viewbar')
1250             if (viewbar) {
1251                 if (mode) {
1252                     viewbar.addClass('enabled').removeClass('disabled')
1253                 } else {
1254                     viewbar.removeClass('enabled').addClass('disabled')
1255                 }
1256             }
1257             this.fpnode.all('.fp-vb-icons,.fp-vb-tree,.fp-vb-details').removeClass('checked')
1258             var modes = {1:'icons', 2:'tree', 3:'details'};
1259             this.fpnode.all('.fp-vb-'+modes[this.viewmode]).addClass('checked');
1260         },
1261         viewbar_clicked: function(e) {
1262             e.preventDefault();
1263             var viewbar = this.fpnode.one('.fp-viewbar')
1264             if (!viewbar || !viewbar.hasClass('disabled')) {
1265                 if (e.currentTarget.hasClass('fp-vb-tree')) {
1266                     this.viewmode = 2;
1267                 } else if (e.currentTarget.hasClass('fp-vb-details')) {
1268                     this.viewmode = 3;
1269                 } else {
1270                     this.viewmode = 1;
1271                 }
1272                 this.viewbar_set_enabled(true)
1273                 this.view_files();
1274                 this.set_preference('recentviewmode', this.viewmode);
1275             }
1276         },
1277         render: function() {
1278             var client_id = this.options.client_id;
1279             this.fpnode = Y.Node.createWithFilesSkin(M.core_filepicker.templates.generallayout).
1280                 set('id', 'filepicker-'+client_id);
1281             this.mainui = new Y.Panel({
1282                 srcNode      : this.fpnode,
1283                 headerContent: M.str.repository.filepicker,
1284                 zIndex       : 5000,
1285                 centered     : true,
1286                 modal        : true,
1287                 visible      : false,
1288                 minWidth     : this.fpnode.getStylePx('minWidth'),
1289                 minHeight    : this.fpnode.getStylePx('minHeight'),
1290                 maxWidth     : this.fpnode.getStylePx('maxWidth'),
1291                 maxHeight    : this.fpnode.getStylePx('maxHeight'),
1292                 render       : true
1293             });
1294             // allow to move the panel dragging it by it's header:
1295             this.mainui.plug(Y.Plugin.Drag,{handles:['#filepicker-'+client_id+' .yui3-widget-hd']});
1296             this.mainui.show();
1297             if (this.mainui.get('y') < 0) {
1298                 this.mainui.set('y', 0);
1299             }
1300             // create panel for selecting a file (initially hidden)
1301             this.selectnode = Y.Node.createWithFilesSkin(M.core_filepicker.templates.selectlayout).
1302                 set('id', 'filepicker-select-'+client_id);
1303             this.selectui = new Y.Panel({
1304                 srcNode      : this.selectnode,
1305                 zIndex       : 6000,
1306                 centered     : true,
1307                 modal        : true,
1308                 close        : true,
1309                 render       : true
1310             });
1311             // allow to move the panel dragging it by it's header:
1312             this.selectui.plug(Y.Plugin.Drag,{handles:['#filepicker-select-'+client_id+' .yui3-widget-hd']});
1313             this.selectui.hide();
1314             // event handler for lazy loading of thumbnails and next page
1315             this.fpnode.one('.fp-content').on(['scroll','resize'], this.content_scrolled, this);
1316             // save template for one path element and location of path bar
1317             if (this.fpnode.one('.fp-path-folder')) {
1318                 this.pathnode = this.fpnode.one('.fp-path-folder');
1319                 this.pathbar = this.pathnode.get('parentNode');
1320                 this.pathbar.removeChild(this.pathnode);
1321             }
1322             // assign callbacks for view mode switch buttons
1323             this.fpnode.all('.fp-vb-icons,.fp-vb-tree,.fp-vb-details').
1324                 on('click', this.viewbar_clicked, this);
1325             // assign callbacks for toolbar links
1326             this.setup_toolbar();
1327             this.setup_select_file();
1328             this.hide_header();
1329
1330             // processing repository listing
1331             // Resort the repositories by sortorder
1332             var sorted_repositories = [];
1333             for (var i in this.options.repositories) {
1334                 sorted_repositories[i] = this.options.repositories[i];
1335             }
1336             sorted_repositories.sort(function(a,b){return a.sortorder-b.sortorder});
1337             // extract one repository template and repeat it for all repositories available,
1338             // set name and icon and assign callbacks
1339             var reponode = this.fpnode.one('.fp-repo');
1340             if (reponode) {
1341                 var list = reponode.get('parentNode');
1342                 list.removeChild(reponode);
1343                 for (i in sorted_repositories) {
1344                     var repository = sorted_repositories[i];
1345                     var node = reponode.cloneNode(true);
1346                     list.appendChild(node);
1347                     node.
1348                         set('id', 'fp-repo-'+client_id+'-'+repository.id).
1349                         on('click', function(e, repository_id) {
1350                             e.preventDefault();
1351                             this.set_preference('recentrepository', repository_id);
1352                             this.hide_header();
1353                             this.list({'repo_id':repository_id});
1354                         }, this /*handler running scope*/, repository.id/*second argument of handler*/);
1355                     node.one('.fp-repo-name').setContent(repository.name);
1356                     node.one('.fp-repo-icon').set('src', repository.icon);
1357                     if (i==0) {
1358                         node.addClass('first');
1359                     }
1360                     if (i==sorted_repositories.length-1) {
1361                         node.addClass('last');
1362                     }
1363                     if (i%2) {
1364                         node.addClass('even');
1365                     } else {
1366                         node.addClass('odd');
1367                     }
1368                 }
1369             }
1370             // display error if no repositories found
1371             if (sorted_repositories.length==0) {
1372                 this.display_error(M.str.repository.norepositoriesavailable, 'norepositoriesavailable')
1373             }
1374             // display repository that was used last time
1375             this.show_recent_repository();
1376         },
1377         parse_repository_options: function(data, appendtolist) {
1378             if (appendtolist) {
1379                 if (data.list) {
1380                     if (!this.filelist) {
1381                         this.filelist = [];
1382                     }
1383                     for (var i in data.list) {
1384                         this.filelist[this.filelist.length] = data.list[i];
1385                     }
1386                 }
1387             } else {
1388                 this.filelist = data.list?data.list:null;
1389                 this.lazyloading = {};
1390             }
1391             this.filepath = data.path?data.path:null;
1392             this.objecttag = data.object?data.object:null;
1393             this.active_repo = {};
1394             this.active_repo.issearchresult = data.issearchresult ? true : false;
1395             this.active_repo.dynload = data.dynload?data.dynload:false;
1396             this.active_repo.pages = Number(data.pages?data.pages:null);
1397             this.active_repo.page = Number(data.page?data.page:null);
1398             this.active_repo.hasmorepages = (this.active_repo.pages && this.active_repo.page && (this.active_repo.page < this.active_repo.pages || this.active_repo.pages == -1))
1399             this.active_repo.id = data.repo_id?data.repo_id:null;
1400             this.active_repo.nosearch = (data.login || data.nosearch); // this is either login form or 'nosearch' attribute set
1401             this.active_repo.norefresh = (data.login || data.norefresh); // this is either login form or 'norefresh' attribute set
1402             this.active_repo.nologin = (data.login || data.nologin); // this is either login form or 'nologin' attribute is set
1403             this.active_repo.logouttext = data.logouttext?data.logouttext:null;
1404             this.active_repo.logouturl = (data.logouturl || '');
1405             this.active_repo.message = (data.message || '');
1406             this.active_repo.help = data.help?data.help:null;
1407             this.active_repo.manage = data.manage?data.manage:null;
1408             this.print_header();
1409         },
1410         print_login: function(data) {
1411             this.parse_repository_options(data);
1412             var client_id = this.options.client_id;
1413             var repository_id = data.repo_id;
1414             var l = this.logindata = data.login;
1415             var loginurl = '';
1416             var action = data['login_btn_action'] ? data['login_btn_action'] : 'login';
1417             var form_id = 'fp-form-'+client_id;
1418
1419             var loginform_node = Y.Node.create(M.core_filepicker.templates.loginform);
1420             loginform_node.one('form').set('id', form_id);
1421             this.fpnode.one('.fp-content').setContent('').appendChild(loginform_node);
1422             var templates = {
1423                 'popup' : loginform_node.one('.fp-login-popup'),
1424                 'textarea' : loginform_node.one('.fp-login-textarea'),
1425                 'select' : loginform_node.one('.fp-login-select'),
1426                 'text' : loginform_node.one('.fp-login-text'),
1427                 'radio' : loginform_node.one('.fp-login-radiogroup'),
1428                 'checkbox' : loginform_node.one('.fp-login-checkbox'),
1429                 'input' : loginform_node.one('.fp-login-input')
1430             };
1431             var container;
1432             for (var i in templates) {
1433                 if (templates[i]) {
1434                     container = templates[i].get('parentNode');
1435                     container.removeChild(templates[i]);
1436                 }
1437             }
1438
1439             for(var k in l) {
1440                 if (templates[l[k].type]) {
1441                     var node = templates[l[k].type].cloneNode(true);
1442                 } else {
1443                     node = templates['input'].cloneNode(true);
1444                 }
1445                 if (l[k].type == 'popup') {
1446                     // submit button
1447                     loginurl = l[k].url;
1448                     var popupbutton = node.one('button');
1449                     popupbutton.on('click', function(e){
1450                         M.core_filepicker.active_filepicker = this;
1451                         window.open(loginurl, 'repo_auth', 'location=0,status=0,width=500,height=300,scrollbars=yes');
1452                         e.preventDefault();
1453                     }, this);
1454                     loginform_node.one('form').on('keydown', function(e) {
1455                         if (e.keyCode == 13) {
1456                             popupbutton.simulate('click');
1457                             e.preventDefault();
1458                         }
1459                     }, this);
1460                     loginform_node.all('.fp-login-submit').remove();
1461                     action = 'popup';
1462                 } else if(l[k].type=='textarea') {
1463                     // textarea element
1464                     if (node.one('label')) {
1465                         node.one('label').set('for', l[k].id).setContent(l[k].label);
1466                     }
1467                     node.one('textarea').setAttrs({id:l[k].id, name:l[k].name});
1468                 } else if(l[k].type=='select') {
1469                     // select element
1470                     if (node.one('label')) {
1471                         node.one('label').set('for', l[k].id).setContent(l[k].label);
1472                     }
1473                     node.one('select').setAttrs({id:l[k].id, name:l[k].name}).setContent('');
1474                     for (i in l[k].options) {
1475                         node.one('select').appendChild(
1476                             Y.Node.create('<option/>').
1477                                 set('value', l[k].options[i].value).
1478                                 setContent(l[k].options[i].label));
1479                     }
1480                 } else if(l[k].type=='radio') {
1481                     // radio input element
1482                     node.all('label').setContent(l[k].label);
1483                     var list = l[k].value.split('|');
1484                     var labels = l[k].value_label.split('|');
1485                     var radionode = null;
1486                     for(var item in list) {
1487                         if (radionode == null) {
1488                             radionode = node.one('.fp-login-radio');
1489                             radionode.one('input').set('checked', 'checked');
1490                         } else {
1491                             var x = radionode.cloneNode(true);
1492                             radionode.insert(x, 'after');
1493                             radionode = x;
1494                             radionode.one('input').set('checked', '');
1495                         }
1496                         radionode.one('input').setAttrs({id:''+l[k].id+item, name:l[k].name,
1497                             type:l[k].type, value:list[item]});
1498                         radionode.all('label').setContent(labels[item]).set('for', ''+l[k].id+item)
1499                     }
1500                     if (radionode == null) {
1501                         node.one('.fp-login-radio').remove();
1502                     }
1503                 } else {
1504                     // input element
1505                     if (node.one('label')) { node.one('label').set('for', l[k].id).setContent(l[k].label) }
1506                     node.one('input').
1507                         set('type', l[k].type).
1508                         set('id', l[k].id).
1509                         set('name', l[k].name).
1510                         set('value', l[k].value?l[k].value:'')
1511                 }
1512                 container.appendChild(node);
1513             }
1514             // custom label text for submit button
1515             if (data['login_btn_label']) {
1516                 loginform_node.all('.fp-login-submit').setContent(data['login_btn_label'])
1517             }
1518             // register button action for login and search
1519             if (action == 'login' || action == 'search') {
1520                 loginform_node.one('.fp-login-submit').on('click', function(e){
1521                     e.preventDefault();
1522                     this.hide_header();
1523                     this.request({
1524                         'scope': this,
1525                         'action':(action == 'search') ? 'search' : 'signin',
1526                         'path': '',
1527                         'client_id': client_id,
1528                         'repository_id': repository_id,
1529                         'form': {id:form_id, upload:false, useDisabled:true},
1530                         'callback': this.display_response
1531                     }, true);
1532                 }, this);
1533             }
1534             // if 'Enter' is pressed in the form, simulate the button click
1535             if (loginform_node.one('.fp-login-submit')) {
1536                 loginform_node.one('form').on('keydown', function(e) {
1537                     if (e.keyCode == 13) {
1538                         loginform_node.one('.fp-login-submit').simulate('click')
1539                         e.preventDefault();
1540                     }
1541                 }, this);
1542             }
1543         },
1544         display_response: function(id, obj, args) {
1545             var scope = args.scope
1546             // highlight the current repository in repositories list
1547             scope.fpnode.all('.fp-repo.active').removeClass('active');
1548             scope.fpnode.all('#fp-repo-'+scope.options.client_id+'-'+obj.repo_id).addClass('active')
1549             // add class repository_REPTYPE to the filepicker (for repository-specific styles)
1550             for (var i in scope.options.repositories) {
1551                 scope.fpnode.removeClass('repository_'+scope.options.repositories[i].type)
1552             }
1553             if (obj.repo_id && scope.options.repositories[obj.repo_id]) {
1554                 scope.fpnode.addClass('repository_'+scope.options.repositories[obj.repo_id].type)
1555             }
1556             // display response
1557             if (obj.login) {
1558                 scope.viewbar_set_enabled(false);
1559                 scope.print_login(obj);
1560             } else if (obj.upload) {
1561                 scope.viewbar_set_enabled(false);
1562                 scope.parse_repository_options(obj);
1563                 scope.create_upload_form(obj);
1564             } else if (obj.object) {
1565                 M.core_filepicker.active_filepicker = scope;
1566                 scope.viewbar_set_enabled(false);
1567                 scope.parse_repository_options(obj);
1568                 scope.create_object_container(obj.object);
1569             } else if (obj.list) {
1570                 scope.viewbar_set_enabled(true);
1571                 scope.parse_repository_options(obj);
1572                 scope.view_files();
1573             }
1574         },
1575         list: function(args) {
1576             if (!args) {
1577                 args = {};
1578             }
1579             if (!args.repo_id) {
1580                 args.repo_id = this.active_repo.id;
1581             }
1582             if (!args.path) {
1583                 args.path = '';
1584             }
1585             this.currentpath = args.path;
1586             this.request({
1587                 action: 'list',
1588                 client_id: this.options.client_id,
1589                 repository_id: args.repo_id,
1590                 path: args.path,
1591                 page: args.page,
1592                 scope: this,
1593                 callback: this.display_response
1594             }, true);
1595         },
1596         populate_licenses_select: function(node) {
1597             if (!node) {
1598                 return;
1599             }
1600             node.setContent('');
1601             var licenses = this.options.licenses;
1602             var recentlicense = this.get_preference('recentlicense');
1603             if (recentlicense) {
1604                 this.options.defaultlicense=recentlicense;
1605             }
1606             for (var i in licenses) {
1607                 var option = Y.Node.create('<option/>').
1608                     set('selected', (this.options.defaultlicense==licenses[i].shortname)).
1609                     set('value', licenses[i].shortname).
1610                     setContent(licenses[i].fullname);
1611                 node.appendChild(option)
1612             }
1613         },
1614         set_selected_license: function(node, value) {
1615             var licenseset = false;
1616             node.all('option').each(function(el) {
1617                 if (el.get('value')==value || el.getContent()==value) {
1618                     el.set('selected', true);
1619                     licenseset = true;
1620                 }
1621             });
1622             if (!licenseset) {
1623                 // we did not find the value in the list
1624                 var recentlicense = this.get_preference('recentlicense');
1625                 node.all('option[selected]').set('selected', false);
1626                 node.all('option[value='+recentlicense+']').set('selected', true);
1627             }
1628         },
1629         create_object_container: function(data) {
1630             var content = this.fpnode.one('.fp-content');
1631             content.setContent('');
1632             //var str = '<object data="'+data.src+'" type="'+data.type+'" width="98%" height="98%" id="container_object" class="fp-object-container mdl-align"></object>';
1633             var container = Y.Node.create('<object/>').
1634                 setAttrs({data:data.src, type:data.type, id:'container_object'}).
1635                 addClass('fp-object-container');
1636             content.setContent('').appendChild(container);
1637         },
1638         create_upload_form: function(data) {
1639             var client_id = this.options.client_id;
1640             var id = data.upload.id+'_'+client_id;
1641             var content = this.fpnode.one('.fp-content');
1642             var template_name = 'uploadform_'+this.options.repositories[data.repo_id].type;
1643             var template = M.core_filepicker.templates[template_name] || M.core_filepicker.templates['uploadform'];
1644             content.setContent(template);
1645
1646             content.all('.fp-file,.fp-saveas,.fp-setauthor,.fp-setlicense').each(function (node) {
1647                 node.all('label').set('for', node.one('input,select').generateID());
1648             });
1649             content.one('form').set('id', id);
1650             content.one('.fp-file input').set('name', 'repo_upload_file');
1651             if (data.upload.label && content.one('.fp-file label')) {
1652                 content.one('.fp-file label').setContent(data.upload.label);
1653             }
1654             content.one('.fp-saveas input').set('name', 'title');
1655             content.one('.fp-setauthor input').setAttrs({name:'author', value:this.options.author});
1656             content.one('.fp-setlicense select').set('name', 'license');
1657             this.populate_licenses_select(content.one('.fp-setlicense select'))
1658             // append hidden inputs to the upload form
1659             content.one('form').appendChild(Y.Node.create('<input/>').
1660                 setAttrs({type:'hidden',name:'itemid',value:this.options.itemid}));
1661             var types = this.options.accepted_types;
1662             for (var i in types) {
1663                 content.one('form').appendChild(Y.Node.create('<input/>').
1664                     setAttrs({type:'hidden',name:'accepted_types[]',value:types[i]}));
1665             }
1666
1667             var scope = this;
1668             content.one('.fp-upload-btn').on('click', function(e) {
1669                 e.preventDefault();
1670                 var license = content.one('.fp-setlicense select');
1671
1672                 this.set_preference('recentlicense', license.get('value'));
1673                 if (!content.one('.fp-file input').get('value')) {
1674                     scope.print_msg(M.str.repository.nofilesattached, 'error');
1675                     return false;
1676                 }
1677                 this.hide_header();
1678                 scope.request({
1679                         scope: scope,
1680                         action:'upload',
1681                         client_id: client_id,
1682                         params: {'savepath':scope.options.savepath},
1683                         repository_id: scope.active_repo.id,
1684                         form: {id: id, upload:true},
1685                         onerror: function(id, o, args) {
1686                             scope.create_upload_form(data);
1687                         },
1688                         callback: function(id, o, args) {
1689                             if (o.event == 'fileexists') {
1690                                 scope.create_upload_form(data);
1691                                 scope.process_existing_file(o);
1692                                 return;
1693                             }
1694                             if (scope.options.editor_target&&scope.options.env=='editor') {
1695                                 scope.options.editor_target.value=o.url;
1696                                 scope.options.editor_target.onchange();
1697                             }
1698                             scope.hide();
1699                             o.client_id = client_id;
1700                             var formcallback_scope = args.scope.options.magicscope ? args.scope.options.magicscope : args.scope;
1701                             scope.options.formcallback.apply(formcallback_scope, [o]);
1702                         }
1703                 }, true);
1704             }, this);
1705         },
1706         /** setting handlers and labels for elements in toolbar. Called once during the initial render of filepicker */
1707         setup_toolbar: function() {
1708             var client_id = this.options.client_id;
1709             var toolbar = this.fpnode.one('.fp-toolbar');
1710             toolbar.one('.fp-tb-logout').one('a,button').on('click', function(e) {
1711                 e.preventDefault();
1712                 if (!this.active_repo.nologin) {
1713                     this.hide_header();
1714                     this.request({
1715                         action:'logout',
1716                         client_id: this.options.client_id,
1717                         repository_id: this.active_repo.id,
1718                         path:'',
1719                         callback: this.display_response
1720                     }, true);
1721                 }
1722                 if (this.active_repo.logouturl) {
1723                     window.open(this.active_repo.logouturl, 'repo_auth', 'location=0,status=0,width=500,height=300,scrollbars=yes');
1724                 }
1725             }, this);
1726             toolbar.one('.fp-tb-refresh').one('a,button').on('click', function(e) {
1727                 e.preventDefault();
1728                 if (!this.active_repo.norefresh) {
1729                     this.list({ path: this.currentpath });
1730                 }
1731             }, this);
1732             toolbar.one('.fp-tb-search form').
1733                 set('method', 'POST').
1734                 set('id', 'fp-tb-search-'+client_id).
1735                 on('submit', function(e) {
1736                     e.preventDefault();
1737                     if (!this.active_repo.nosearch) {
1738                         this.request({
1739                             scope: this,
1740                             action:'search',
1741                             client_id: this.options.client_id,
1742                             repository_id: this.active_repo.id,
1743                             form: {id: 'fp-tb-search-'+client_id, upload:false, useDisabled:true},
1744                             callback: this.display_response
1745                         }, true);
1746                     }
1747             }, this);
1748
1749             // it does not matter what kind of element is .fp-tb-manage, we create a dummy <a>
1750             // element and use it to open url on click event
1751             var managelnk = Y.Node.create('<a/>').
1752                 setAttrs({id:'fp-tb-manage-'+client_id+'-link', target:'_blank'}).
1753                 setStyle('display', 'none');
1754             toolbar.append(managelnk);
1755             toolbar.one('.fp-tb-manage').one('a,button').
1756                 on('click', function(e) {
1757                     e.preventDefault();
1758                     managelnk.simulate('click')
1759                 });
1760
1761             // same with .fp-tb-help
1762             var helplnk = Y.Node.create('<a/>').
1763                 setAttrs({id:'fp-tb-help-'+client_id+'-link', target:'_blank'}).
1764                 setStyle('display', 'none');
1765             toolbar.append(helplnk);
1766             toolbar.one('.fp-tb-help').one('a,button').
1767                 on('click', function(e) {
1768                     e.preventDefault();
1769                     helplnk.simulate('click')
1770                 });
1771         },
1772         hide_header: function() {
1773             if (this.fpnode.one('.fp-toolbar')) {
1774                 this.fpnode.one('.fp-toolbar').addClass('empty');
1775             }
1776             if (this.pathbar) {
1777                 this.pathbar.setContent('').addClass('empty');
1778             }
1779         },
1780         print_header: function() {
1781             var r = this.active_repo;
1782             var scope = this;
1783             var client_id = this.options.client_id;
1784             this.hide_header();
1785             this.print_path();
1786             var toolbar = this.fpnode.one('.fp-toolbar');
1787             if (!toolbar) { return; }
1788
1789             var enable_tb_control = function(node, enabled) {
1790                 if (!node) { return; }
1791                 node.addClassIf('disabled', !enabled).addClassIf('enabled', enabled)
1792                 if (enabled) {
1793                     toolbar.removeClass('empty');
1794                 }
1795             }
1796
1797             // TODO 'back' permanently disabled for now. Note, flickr_public uses 'Logout' for it!
1798             enable_tb_control(toolbar.one('.fp-tb-back'), false);
1799
1800             // search form
1801             enable_tb_control(toolbar.one('.fp-tb-search'), !r.nosearch);
1802             if(!r.nosearch) {
1803                 var searchform = toolbar.one('.fp-tb-search form');
1804                 searchform.setContent('');
1805                 this.request({
1806                     scope: this,
1807                     action:'searchform',
1808                     repository_id: this.active_repo.id,
1809                     callback: function(id, obj, args) {
1810                         if (obj.repo_id == scope.active_repo.id && obj.form) {
1811                             // if we did not jump to another repository meanwhile
1812                             searchform.setContent(obj.form);
1813                             // Highlight search text when user click for search.
1814                             var searchnode = searchform.one('input[name="s"]');
1815                             if (searchnode) {
1816                                 searchnode.once('click', function(e) {
1817                                     e.preventDefault();
1818                                     this.select();
1819                                 });
1820                             }
1821                         }
1822                     }
1823                 }, false);
1824             }
1825
1826             // refresh button
1827             // weather we use cache for this instance, this button will reload listing anyway
1828             enable_tb_control(toolbar.one('.fp-tb-refresh'), !r.norefresh);
1829
1830             // login button
1831             enable_tb_control(toolbar.one('.fp-tb-logout'), !r.nologin);
1832             if (!r.nologin) {
1833                 var label = r.logouttext ? r.logouttext : M.str.repository.logout;
1834                 toolbar.one('.fp-tb-logout').one('a,button').setContent(label)
1835             }
1836
1837             // manage url
1838             enable_tb_control(toolbar.one('.fp-tb-manage'), r.manage);
1839             Y.one('#fp-tb-manage-'+client_id+'-link').set('href', r.manage);
1840
1841             // help url
1842             enable_tb_control(toolbar.one('.fp-tb-help'), r.help);
1843             Y.one('#fp-tb-help-'+client_id+'-link').set('href', r.help);
1844
1845             // message
1846             enable_tb_control(toolbar.one('.fp-tb-message'), r.message);
1847             toolbar.one('.fp-tb-message').setContent(r.message);
1848         },
1849         print_path: function() {
1850             if (!this.pathbar) {
1851                 return;
1852             }
1853             this.pathbar.setContent('').addClass('empty');
1854             var p = this.filepath;
1855             if (p && p.length!=0 && this.viewmode != 2) {
1856                 for(var i = 0; i < p.length; i++) {
1857                     var el = this.pathnode.cloneNode(true);
1858                     this.pathbar.appendChild(el);
1859                     if (i == 0) {
1860                         el.addClass('first');
1861                     }
1862                     if (i == p.length-1) {
1863                         el.addClass('last');
1864                     }
1865                     if (i%2) {
1866                         el.addClass('even');
1867                     } else {
1868                         el.addClass('odd');
1869                     }
1870                     el.all('.fp-path-folder-name').setContent(p[i].name);
1871                     el.on('click',
1872                             function(e, path) {
1873                                 e.preventDefault();
1874                                 this.list({'path':path});
1875                             },
1876                         this, p[i].path);
1877                 }
1878                 this.pathbar.removeClass('empty');
1879             }
1880         },
1881         hide: function() {
1882             this.selectui.hide();
1883             if (this.process_dlg) {
1884                 this.process_dlg.hide();
1885             }
1886             if (this.msg_dlg) {
1887                 this.msg_dlg.hide();
1888             }
1889             this.mainui.hide();
1890         },
1891         show: function() {
1892             if (this.fpnode) {
1893                 this.hide();
1894                 this.mainui.show();
1895                 this.show_recent_repository();
1896             } else {
1897                 this.launch();
1898             }
1899         },
1900         launch: function() {
1901             this.render();
1902         },
1903         show_recent_repository: function() {
1904             this.hide_header();
1905             this.viewbar_set_enabled(false);
1906             var repository_id = this.get_preference('recentrepository');
1907             this.viewmode = this.get_preference('recentviewmode');
1908             if (this.viewmode != 2 && this.viewmode != 3) {
1909                 this.viewmode = 1;
1910             }
1911             if (this.options.repositories[repository_id]) {
1912                 this.list({'repo_id':repository_id});
1913             }
1914         },
1915         get_preference: function (name) {
1916             if (this.options.userprefs[name]) {
1917                 return this.options.userprefs[name];
1918             } else {
1919                 return false;
1920             }
1921         },
1922         set_preference: function(name, value) {
1923             if (this.options.userprefs[name] != value) {
1924                 M.util.set_user_preference('filepicker_' + name, value);
1925                 this.options.userprefs[name] = value;
1926             }
1927         }
1928     });
1929     var loading = Y.one('#filepicker-loading-'+options.client_id);
1930     if (loading) {
1931         loading.setStyle('display', 'none');
1932     }
1933     M.core_filepicker.instances[options.client_id] = new FilePickerHelper(options);
1934 };