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 displayed in file picker
  27  * this.options.formcallback
  28  *
  29  * Active repository options
  30  * =====
  31  * this.active_repo.id
  32  * this.active_repo.defaultreturntype
  33  * this.active_repo.nosearch
  34  * this.active_repo.norefresh
  35  * this.active_repo.nologin
  36  * this.active_repo.help
  37  * this.active_repo.manage
  38  *
  39  * Server responses
  40  * =====
  41  * this.filelist, cached filelist
  42  * this.pages
  43  * this.page
  44  * this.filepath, current path (each element of the array is a part of the breadcrumb)
  45  * this.logindata, cached login form
  46  */
  47
  48 YUI.add('moodle-core_filepicker', function(Y) {
  49     /** help function to extract width/height style as a number, not as a string */
  50     Y.Node.prototype.getStylePx = function(attr) {
  51         var style = this.getStyle(attr);
  52         if (''+style == '0' || ''+style == '0px') {
  53             return 0;
  54         }
  55         var matches = style.match(/^([\d\.]+)px$/)
  56         if (matches && parseFloat(matches[1])) {
  57             return parseFloat(matches[1]);
  58         }
  59         return null;
  60     }
  61
  62     /** if condition is met, the class is added to the node, otherwise - removed */
  63     Y.Node.prototype.addClassIf = function(className, condition) {
  64         if (condition) {
  65             this.addClass(className);
  66         } else {
  67             this.removeClass(className);
  68         }
  69         return this;
  70     }
  71
  72     /** sets the width(height) of the node considering existing minWidth(minHeight) */
  73     Y.Node.prototype.setStyleAdv = function(stylename, value) {
  74         var stylenameCap = stylename.substr(0,1).toUpperCase() + stylename.substr(1, stylename.length-1).toLowerCase();
  75         this.setStyle(stylename, '' + Math.max(value, this.getStylePx('min'+stylenameCap)) + 'px')
  76         return this;
  77     }
  78
  79     /** set image source to src, if there is preview, remember it in lazyloading.
  80      *  If there is a preview and it was already loaded, use it. */
  81     Y.Node.prototype.setImgSrc = function(src, realsrc, lazyloading) {
  82         if (realsrc) {
  83             if (M.core_filepicker.loadedpreviews[realsrc]) {
  84                 this.set('src', realsrc).addClass('realpreview');
  85                 return this;
  86             } else {
  87                 if (!this.get('id')) {
  88                     this.generateID();
  89                 }
  90                 lazyloading[this.get('id')] = realsrc;
  91             }
  92         }
  93         this.set('src', src);
  94         return this;
  95     }
  96
  97     /**
  98      * Replaces the image source with preview. If the image is inside the treeview, we need
  99      * also to update the html property of corresponding YAHOO.widget.HTMLNode
 100      * @param array lazyloading array containing associations of imgnodeid->realsrc
 101      */
 102     Y.Node.prototype.setImgRealSrc = function(lazyloading) {
 103         if (this.get('id') && lazyloading[this.get('id')]) {
 104             var newsrc = lazyloading[this.get('id')];
 105             M.core_filepicker.loadedpreviews[newsrc] = true;
 106             this.set('src', newsrc).addClass('realpreview');
 107             delete lazyloading[this.get('id')];
 108             var treenode = this.ancestor('.fp-treeview')
 109             if (treenode && treenode.get('parentNode').treeview) {
 110                 treenode.get('parentNode').treeview.getRoot().refreshPreviews(this.get('id'), newsrc);
 111             }
 112         }
 113         return this;
 114     }
 115
 116     /** scan TreeView to find which node contains image with id=imgid and replace it's html
 117      * with the new image source. */
 118     Y.YUI2.widget.Node.prototype.refreshPreviews = function(imgid, newsrc, regex) {
 119         if (!regex) {
 120             regex = new RegExp("<img\\s[^>]*id=\""+imgid+"\"[^>]*?(/?)>", "im");
 121         }
 122         if (this.expanded || this.isLeaf) {
 123             var html = this.getContentHtml();
 124             if (html && this.setHtml && regex.test(html)) {
 125                 var newhtml = this.html.replace(regex, "<img id=\""+imgid+"\" src=\""+newsrc+"\" class=\"realpreview\"$1>", html);
 126                 this.setHtml(newhtml);
 127                 return true;
 128             }
 129             if (!this.isLeaf && this.children) {
 130                 for(var c in this.children) {
 131                     if (this.children[c].refreshPreviews(imgid, newsrc, regex)) {
 132                         return true;
 133                     }
 134                 }
 135             }
 136         }
 137         return false;
 138     }
 139
 140     /**
 141      * Displays a list of files (used by filepicker, filemanager) inside the Node
 142      *
 143      * @param array options
 144      *   viewmode : 1 - icons, 2 - tree, 3 - table
 145      *   appendonly : whether fileslist need to be appended instead of replacing the existing content
 146      *   filenode : Node element that contains template for displaying one file
 147      *   callback : On click callback. The element of the fileslist array will be passed as argument
 148      *   rightclickcallback : On right click callback (optional).
 149      *   callbackcontext : context where callbacks are executed
 150      *   sortable : whether content may be sortable (in table mode)
 151      *   dynload : allow dynamic load for tree view
 152      *   filepath : for pre-building of tree view - the path to the current directory in filepicker format
 153      *   treeview_dynload : callback to function to dynamically load the folder in tree view
 154      *   classnamecallback : callback to function that returns the class name for an element
 155      * @param array fileslist array of files to show, each array element may have attributes:
 156      *   title or fullname : file name
 157      *   shorttitle (optional) : display file name
 158      *   thumbnail : url of image
 159      *   icon : url of icon image
 160      *   thumbnail_width : width of thumbnail, default 90
 161      *   thumbnail_height : height of thumbnail, default 90
 162      *   thumbnail_alt : TODO not needed!
 163      *   description or thumbnail_title : alt text
 164      * @param array lazyloading : reference to the array with lazy loading images
 165      */
 166     Y.Node.prototype.fp_display_filelist = function(options, fileslist, lazyloading) {
 167         var viewmodeclassnames = {1:'fp-iconview', 2:'fp-treeview', 3:'fp-tableview'};
 168         var classname = viewmodeclassnames[options.viewmode];
 169         var scope = this;
 170         /** return whether file is a folder (different attributes in FileManager and FilePicker) */
 171         var file_is_folder = function(node) {
 172             if (node.children) {return true;}
 173             if (node.type && node.type == 'folder') {return true;}
 174             return false;
 175         };
 176         /** return the name of the file (different attributes in FileManager and FilePicker) */
 177         var file_get_filename = function(node) {
 178             return node.title ? node.title : node.fullname;
 179         };
 180         /** return display name of the file (different attributes in FileManager and FilePicker) */
 181         var file_get_displayname = function(node) {
 182             var displayname = node.shorttitle ? node.shorttitle : file_get_filename(node);
 183             return Y.Escape.html(displayname);
 184         };
 185         /** return file description (different attributes in FileManager and FilePicker) */
 186         var file_get_description = function(node) {
 187             var description = '';
 188             if (node.description) {
 189                 description = node.description;
 190             } else if (node.thumbnail_title) {
 191                 description = node.thumbnail_title;
 192             } else {
 193                 description = file_get_filename(node);
 194             }
 195             return Y.Escape.html(description);
 196         };
 197         /** help funciton for tree view */
 198         var build_tree = function(node, level) {
 199             // prepare file name with icon
 200             var el = Y.Node.create('<div/>');
 201             el.appendChild(options.filenode.cloneNode(true));
 202
 203             el.one('.fp-filename').setContent(file_get_displayname(node));
 204             // TODO add tooltip with node.title or node.thumbnail_title
 205             var tmpnodedata = {className:options.classnamecallback(node)};
 206             el.get('children').addClass(tmpnodedata.className);
 207             if (node.icon) {
 208                 el.one('.fp-icon').appendChild(Y.Node.create('<img/>'));
 209                 el.one('.fp-icon img').setImgSrc(node.icon, node.realicon, lazyloading);
 210             }
 211             // create node
 212             tmpnodedata.html = el.getContent();
 213             var tmpNode = new Y.YUI2.widget.HTMLNode(tmpnodedata, level, false);
 214             if (node.dynamicLoadComplete) {
 215                 tmpNode.dynamicLoadComplete = true;
 216             }
 217             tmpNode.fileinfo = node;
 218             tmpNode.isLeaf = !file_is_folder(node);
 219             if (!tmpNode.isLeaf) {
 220                 if(node.expanded) {
 221                     tmpNode.expand();
 222                 }
 223                 tmpNode.path = node.path ? node.path : (node.filepath ? node.filepath : '');
 224                 for(var c in node.children) {
 225                     build_tree(node.children[c], tmpNode);
 226                 }
 227             }
 228         };
 229         /** initialize tree view */
 230         var initialize_tree_view = function() {
 231             var parentid = scope.one('.'+classname).get('id');
 232             // TODO MDL-32736 use YUI3 gallery TreeView
 233             scope.treeview = new Y.YUI2.widget.TreeView(parentid);
 234             if (options.dynload) {
 235                 scope.treeview.setDynamicLoad(Y.bind(options.treeview_dynload, options.callbackcontext), 1);
 236             }
 237             scope.treeview.singleNodeHighlight = true;
 238             if (options.filepath && options.filepath.length) {
 239                 // we just jumped from icon/details view, we need to show all parents
 240                 // we extract as much information as possible from filepath and filelist
 241                 // and send additional requests to retrieve siblings for parent folders
 242                 var mytree = {};
 243                 var mytreeel = null;
 244                 for (var i in options.filepath) {
 245                     if (mytreeel == null) {
 246                         mytreeel = mytree;
 247                     } else {
 248                         mytreeel.children = [{}];
 249                         mytreeel = mytreeel.children[0];
 250                     }
 251                     var pathelement = options.filepath[i];
 252                     mytreeel.path = pathelement.path;
 253                     mytreeel.title = pathelement.name;
 254                     mytreeel.icon = pathelement.icon;
 255                     mytreeel.dynamicLoadComplete = true; // we will call it manually
 256                     mytreeel.expanded = true;
 257                 }
 258                 mytreeel.children = fileslist;
 259                 build_tree(mytree, scope.treeview.getRoot());
 260                 // manually call dynload for parent elements in the tree so we can load other siblings
 261                 if (options.dynload) {
 262                     var root = scope.treeview.getRoot();
 263                     while (root && root.children && root.children.length) {
 264                         root = root.children[0];
 265                         if (root.path == mytreeel.path) {
 266                             root.origpath = options.filepath;
 267                             root.origlist = fileslist;
 268                         }
 269                         // Removed bind as of MDL-62415 as it overwrites the search tree results
 270                     }
 271                 }
 272             } else {
 273                 // there is no path information, just display all elements as a list, without hierarchy
 274                 for(k in fileslist) {
 275                     build_tree(fileslist[k], scope.treeview.getRoot());
 276                 }
 277             }
 278             scope.treeview.subscribe('clickEvent', function(e){
 279                 e.node.highlight(false);
 280                 var callback = options.callback;
 281                 if (options.rightclickcallback && e.event.target &&
 282                         Y.Node(e.event.target).ancestor('.fp-treeview .fp-contextmenu', true)) {
 283                     callback = options.rightclickcallback;
 284                 }
 285                 Y.bind(callback, options.callbackcontext)(e, e.node.fileinfo);
 286                 Y.YUI2.util.Event.stopEvent(e.event)
 287             });
 288             // TODO MDL-32736 support right click
 289             /*if (options.rightclickcallback) {
 290                 scope.treeview.subscribe('dblClickEvent', function(e){
 291                     e.node.highlight(false);
 292                     Y.bind(options.rightclickcallback, options.callbackcontext)(e, e.node.fileinfo);
 293                 });
 294             }*/
 295             scope.treeview.draw();
 296         };
 297         /** formatting function for table view */
 298         var formatValue = function (o){
 299             if (o.data[''+o.column.key+'_f_s']) {return o.data[''+o.column.key+'_f_s'];}
 300             else if (o.data[''+o.column.key+'_f']) {return o.data[''+o.column.key+'_f'];}
 301             else if (o.value) {return o.value;}
 302             else {return '';}
 303         };
 304         /** formatting function for table view */
 305         var formatTitle = function(o) {
 306             var el = Y.Node.create('<div/>');
 307             el.appendChild(options.filenode.cloneNode(true)); // TODO not node but string!
 308             el.get('children').addClass(o.data['classname']);
 309             el.one('.fp-filename').setContent(o.value);
 310             if (o.data['icon']) {
 311                 el.one('.fp-icon').appendChild(Y.Node.create('<img/>'));
 312                 el.one('.fp-icon img').setImgSrc(o.data['icon'], o.data['realicon'], lazyloading);
 313             }
 314             if (options.rightclickcallback) {
 315                 el.get('children').addClass('fp-hascontextmenu');
 316             }
 317             // TODO add tooltip with o.data['title'] (o.value) or o.data['thumbnail_title']
 318             return el.getContent();
 319         }
 320         /** sorting function for table view */
 321         var sortFoldersFirst = function(a, b, desc) {
 322             if (a.get('isfolder') && !b.get('isfolder')) {
 323                 return -1;
 324             }
 325             if (!a.get('isfolder') && b.get('isfolder')) {
 326                 return 1;
 327             }
 328             var aa = a.get(this.key), bb = b.get(this.key), dir = desc ? -1 : 1;
 329             return (aa > bb) ? dir : ((aa < bb) ? -dir : 0);
 330         }
 331         /** initialize table view */
 332         var initialize_table_view = function() {
 333             var cols = [
 334                 {key: "displayname", label: M.util.get_string('name', 'moodle'), allowHTML: true, formatter: formatTitle,
 335                     sortable: true, sortFn: sortFoldersFirst},
 336                 {key: "datemodified", label: M.util.get_string('lastmodified', 'moodle'), allowHTML: true, formatter: formatValue,
 337                     sortable: true, sortFn: sortFoldersFirst},
 338                 {key: "size", label: M.util.get_string('size', 'repository'), allowHTML: true, formatter: formatValue,
 339                     sortable: true, sortFn: sortFoldersFirst},
 340                 {key: "mimetype", label: M.util.get_string('type', 'repository'), allowHTML: true,
 341                     sortable: true, sortFn: sortFoldersFirst}
 342             ];
 343             scope.tableview = new Y.DataTable({columns: cols, data: fileslist});
 344             scope.tableview.delegate('click', function (e, tableview) {
 345                 var record = tableview.getRecord(e.currentTarget.get('id'));
 346                 if (record) {
 347                     var callback = options.callback;
 348                     if (options.rightclickcallback && e.target.ancestor('.fp-tableview .fp-contextmenu', true)) {
 349                         callback = options.rightclickcallback;
 350                     }
 351                     Y.bind(callback, this)(e, record.getAttrs());
 352                 }
 353             }, 'tr', options.callbackcontext, scope.tableview);
 354             if (options.rightclickcallback) {
 355                 scope.tableview.delegate('contextmenu', function (e, tableview) {
 356                     var record = tableview.getRecord(e.currentTarget.get('id'));
 357                     if (record) { Y.bind(options.rightclickcallback, this)(e, record.getAttrs()); }
 358                 }, 'tr', options.callbackcontext, scope.tableview);
 359             }
 360         }
 361         /** append items in table view mode */
 362         var append_files_table = function() {
 363             if (options.appendonly) {
 364                 fileslist.forEach(function(el) {
 365                     this.tableview.data.add(el);
 366                 },scope);
 367             }
 368             scope.tableview.render(scope.one('.'+classname));
 369             scope.tableview.sortable = options.sortable ? true : false;
 370         };
 371         /** append items in tree view mode */
 372         var append_files_tree = function() {
 373             if (options.appendonly) {
 374                 var parentnode = scope.treeview.getRoot();
 375                 if (scope.treeview.getHighlightedNode()) {
 376                     parentnode = scope.treeview.getHighlightedNode();
 377                     if (parentnode.isLeaf) {parentnode = parentnode.parent;}
 378                 }
 379                 for (var k in fileslist) {
 380                     build_tree(fileslist[k], parentnode);
 381                 }
 382                 scope.treeview.draw();
 383             } else {
 384                 // otherwise files were already added in initialize_tree_view()
 385             }
 386         }
 387         /** append items in icon view mode */
 388         var append_files_icons = function() {
 389             parent = scope.one('.'+classname);
 390             for (var k in fileslist) {
 391                 var node = fileslist[k];
 392                 var element = options.filenode.cloneNode(true);
 393                 parent.appendChild(element);
 394                 element.addClass(options.classnamecallback(node));
 395                 var filenamediv = element.one('.fp-filename');
 396                 filenamediv.setContent(file_get_displayname(node));
 397                 var imgdiv = element.one('.fp-thumbnail'), width, height, src;
 398                 if (node.thumbnail) {
 399                     width = node.thumbnail_width ? node.thumbnail_width : 90;
 400                     height = node.thumbnail_height ? node.thumbnail_height : 90;
 401                     src = node.thumbnail;
 402                 } else {
 403                     width = 16;
 404                     height = 16;
 405                     src = node.icon;
 406                 }
 407                 filenamediv.setStyleAdv('width', width);
 408                 imgdiv.setStyleAdv('width', width).setStyleAdv('height', height);
 409                 var img = Y.Node.create('<img/>').setAttrs({
 410                         title: file_get_description(node),
 411                         alt: Y.Escape.html(node.thumbnail_alt ? node.thumbnail_alt : file_get_filename(node))}).
 412                     setStyle('maxWidth', ''+width+'px').
 413                     setStyle('maxHeight', ''+height+'px');
 414                 img.setImgSrc(src, node.realthumbnail, lazyloading);
 415                 imgdiv.appendChild(img);
 416                 element.on('click', function(e, nd) {
 417                     if (options.rightclickcallback && e.target.ancestor('.fp-iconview .fp-contextmenu', true)) {
 418                         Y.bind(options.rightclickcallback, this)(e, nd);
 419                     } else {
 420                         Y.bind(options.callback, this)(e, nd);
 421                     }
 422                 }, options.callbackcontext, node);
 423                 if (options.rightclickcallback) {
 424                     element.on('contextmenu', options.rightclickcallback, options.callbackcontext, node);
 425                 }
 426             }
 427         }
 428
 429         // Notify the user if any of the files has a problem status.
 430         var problemFiles = [];
 431         fileslist.forEach(function(file) {
 432             if (!file_is_folder(file) && file.hasOwnProperty('status') && file.status != 0) {
 433                 problemFiles.push(file);
 434             }
 435         });
 436         if (problemFiles.length > 0) {
 437             require(["core/notification", "core/str"], function(Notification, Str) {
 438                 problemFiles.forEach(function(problemFile) {
 439                     Str.get_string('storedfilecannotreadfile', 'error', problemFile.fullname).then(function(string) {
 440                         Notification.addNotification({
 441                             message: string,
 442                             type: "error"
 443                         });
 444                         return;
 445                     }).catch(Notification.exception);
 446                 });
 447             });
 448         }
 449
 450         // If table view, need some additional properties
 451         // before passing fileslist to the YUI tableview
 452         if (options.viewmode == 3) {
 453             fileslist.forEach(function(el) {
 454                 el.displayname = file_get_displayname(el);
 455                 el.isfolder = file_is_folder(el);
 456                 el.classname = options.classnamecallback(el);
 457             }, scope);
 458         }
 459
 460         // initialize files view
 461         if (!options.appendonly) {
 462             var parent = Y.Node.create('<div/>').addClass(classname);
 463             this.setContent('').appendChild(parent);
 464             parent.generateID();
 465             if (options.viewmode == 2) {
 466                 initialize_tree_view();
 467             } else if (options.viewmode == 3) {
 468                 initialize_table_view();
 469             } else {
 470                 // nothing to initialize for icon view
 471             }
 472         }
 473
 474         // append files to the list
 475         if (options.viewmode == 2) {
 476             append_files_tree();
 477         } else if (options.viewmode == 3) {
 478             append_files_table();
 479         } else {
 480             append_files_icons();
 481         }
 482
 483     }
 484 }, '@VERSION@', {
 485     requires:['base', 'node', 'yui2-treeview', 'panel', 'cookie', 'datatable', 'datatable-sort']
 486 });
 487
 488 M.core_filepicker = M.core_filepicker || {};
 489
 490 /**
 491  * instances of file pickers used on page
 492  */
 493 M.core_filepicker.instances = M.core_filepicker.instances || {};
 494 M.core_filepicker.active_filepicker = null;
 495
 496 /**
 497  * HTML Templates to use in FilePicker
 498  */
 499 M.core_filepicker.templates = M.core_filepicker.templates || {};
 500
 501 /**
 502  * Array of image sources for real previews (realicon or realthumbnail) that are already loaded
 503  */
 504 M.core_filepicker.loadedpreviews = M.core_filepicker.loadedpreviews || {};
 505
 506 /**
 507 * Set selected file info
 508 *
 509 * @param object file info
 510 */
 511 M.core_filepicker.select_file = function(file) {
 512     M.core_filepicker.active_filepicker.select_file(file);
 513 }
 514
 515 /**
 516  * Init and show file picker
 517  */
 518 M.core_filepicker.show = function(Y, options) {
 519     if (!M.core_filepicker.instances[options.client_id]) {
 520         M.core_filepicker.init(Y, options);
 521     }
 522     M.core_filepicker.instances[options.client_id].options.formcallback = options.formcallback;
 523     M.core_filepicker.instances[options.client_id].show();
 524 };
 525
 526 M.core_filepicker.set_templates = function(Y, templates) {
 527     for (var templid in templates) {
 528         M.core_filepicker.templates[templid] = templates[templid];
 529     }
 530 }
 531
 532 /**
 533  * Add new file picker to current instances
 534  */
 535 M.core_filepicker.init = function(Y, options) {
 536     var FilePickerHelper = function(options) {
 537         FilePickerHelper.superclass.constructor.apply(this, arguments);
 538     };
 539
 540     FilePickerHelper.NAME = "FilePickerHelper";
 541     FilePickerHelper.ATTRS = {
 542         options: {},
 543         lang: {}
 544     };
 545
 546     Y.extend(FilePickerHelper, Y.Base, {
 547         api: M.cfg.wwwroot+'/repository/repository_ajax.php',
 548         cached_responses: {},
 549         waitinterval : null, // When the loading template is being displayed and its animation is running this will be an interval instance.
 550         initializer: function(options) {
 551             this.options = options;
 552             if (!this.options.savepath) {
 553                 this.options.savepath = '/';
 554             }
 555         },
 556
 557         destructor: function() {
 558         },
 559
 560         request: function(args, redraw) {
 561             var api = (args.api ? args.api : this.api) + '?action='+args.action;
 562             var params = {};
 563             var scope = args['scope'] ? args['scope'] : this;
 564             params['repo_id']=args.repository_id;
 565             params['p'] = args.path?args.path:'';
 566             params['page'] = args.page?args.page:'';
 567             params['env']=this.options.env;
 568             // the form element only accept certain file types
 569             params['accepted_types']=this.options.accepted_types;
 570             params['sesskey'] = M.cfg.sesskey;
 571             params['client_id'] = args.client_id;
 572             params['itemid'] = this.options.itemid?this.options.itemid:0;
 573             params['maxbytes'] = this.options.maxbytes?this.options.maxbytes:-1;
 574             // The unlimited value of areamaxbytes is -1, it is defined by FILE_AREA_MAX_BYTES_UNLIMITED.
 575             params['areamaxbytes'] = this.options.areamaxbytes ? this.options.areamaxbytes : -1;
 576             if (this.options.context && this.options.context.id) {
 577                 params['ctx_id'] = this.options.context.id;
 578             }
 579             if (args['params']) {
 580                 for (i in args['params']) {
 581                     params[i] = args['params'][i];
 582                 }
 583             }
 584             if (args.action == 'upload') {
 585                 var list = [];
 586                 for(var k in params) {
 587                     var value = params[k];
 588                     if(value instanceof Array) {
 589                         for(var i in value) {
 590                             list.push(k+'[]='+value[i]);
 591                         }
 592                     } else {
 593                         list.push(k+'='+value);
 594                     }
 595                 }
 596                 params = list.join('&');
 597             } else {
 598                 params = build_querystring(params);
 599             }
 600             var cfg = {
 601                 method: 'POST',
 602                 on: {
 603                     complete: function(id,o,p) {
 604                         var data = null;
 605                         try {
 606                             data = Y.JSON.parse(o.responseText);
 607                         } catch(e) {
 608                             if (o && o.status && o.status > 0) {
 609                                 Y.use('moodle-core-notification-exception', function() {
 610                                     return new M.core.exception(e);
 611                                 });
 612                                 return;
 613                             }
 614                         }
 615                         // error checking
 616                         if (data && data.error) {
 617                             Y.use('moodle-core-notification-ajaxexception', function () {
 618                                 return new M.core.ajaxException(data);
 619                             });
 620                             this.fpnode.one('.fp-content').setContent('');
 621                             return;
 622                         } else {
 623                             if (data.msg) {
 624                                 scope.print_msg(data.msg, 'info');
 625                             }
 626                             // cache result if applicable
 627                             if (args.action != 'upload' && data.allowcaching) {
 628                                 scope.cached_responses[params] = data;
 629                             }
 630                             // invoke callback
 631                             args.callback(id,data,p);
 632                         }
 633                     }
 634                 },
 635                 arguments: {
 636                     scope: scope
 637                 },
 638                 headers: {
 639                     'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
 640                 },
 641                 data: params,
 642                 context: this
 643             };
 644             if (args.form) {
 645                 cfg.form = args.form;
 646             }
 647             // check if result of the same request has been already cached. If not, request it
 648             // (never applicable in case of form submission and/or upload action):
 649             if (!args.form && args.action != 'upload' && scope.cached_responses[params]) {
 650                 args.callback(null, scope.cached_responses[params], {scope: scope})
 651             } else {
 652                 Y.io(api, cfg);
 653                 if (redraw) {
 654                     this.wait();
 655                 }
 656             }
 657         },
 658         /** displays the dialog and processes rename/overwrite if there is a file with the same name in the same filearea*/
 659         process_existing_file: function(data) {
 660             var scope = this;
 661             var handleOverwrite = function(e) {
 662                 // overwrite
 663                 e.preventDefault();
 664                 var data = this.process_dlg.dialogdata;
 665                 var params = {}
 666                 params['existingfilename'] = data.existingfile.filename;
 667                 params['existingfilepath'] = data.existingfile.filepath;
 668                 params['newfilename'] = data.newfile.filename;
 669                 params['newfilepath'] = data.newfile.filepath;
 670                 this.hide_header();
 671                 this.request({
 672                     'params': params,
 673                     'scope': this,
 674                     'action':'overwrite',
 675                     'path': '',
 676                     'client_id': this.options.client_id,
 677                     'repository_id': this.active_repo.id,
 678                     'callback': function(id, o, args) {
 679                         scope.hide();
 680                         // Add an arbitrary parameter to the URL to force browsers to re-load the new image even
 681                         // if the file name has not changed.
 682                         var urlimage = data.existingfile.url + "?time=" + (new Date()).getTime();
 683                         if (scope.options.editor_target && scope.options.env == 'editor') {
 684                             // editor needs to update url
 685                             scope.options.editor_target.value = urlimage;
 686                             scope.options.editor_target.dispatchEvent(new Event('change'), {'bubbles': true});
 687                         }
 688                         var fileinfo = {'client_id':scope.options.client_id,
 689                             'url': urlimage,
 690                             'file': data.existingfile.filename};
 691                         var formcallback_scope = scope.options.magicscope ? scope.options.magicscope : scope;
 692                         scope.options.formcallback.apply(formcallback_scope, [fileinfo]);
 693                     }
 694                 }, true);
 695             }
 696             var handleRename = function(e) {
 697                 // inserts file with the new name
 698                 e.preventDefault();
 699                 var scope = this;
 700                 var data = this.process_dlg.dialogdata;
 701                 if (scope.options.editor_target && scope.options.env == 'editor') {
 702                     scope.options.editor_target.value = data.newfile.url;
 703                     scope.options.editor_target.dispatchEvent(new Event('change'), {'bubbles': true});
 704                 }
 705                 scope.hide();
 706                 var formcallback_scope = scope.options.magicscope ? scope.options.magicscope : scope;
 707                 var fileinfo = {'client_id':scope.options.client_id,
 708                                 'url':data.newfile.url,
 709                                 'file':data.newfile.filename};
 710                 scope.options.formcallback.apply(formcallback_scope, [fileinfo]);
 711             }
 712             var handleCancel = function(e) {
 713                 // Delete tmp file
 714                 e.preventDefault();
 715                 var params = {};
 716                 params['newfilename'] = this.process_dlg.dialogdata.newfile.filename;
 717                 params['newfilepath'] = this.process_dlg.dialogdata.newfile.filepath;
 718                 this.request({
 719                     'params': params,
 720                     'scope': this,
 721                     'action':'deletetmpfile',
 722                     'path': '',
 723                     'client_id': this.options.client_id,
 724                     'repository_id': this.active_repo.id,
 725                     'callback': function(id, o, args) {
 726                         // let it be in background, from user point of view nothing is happenning
 727                     }
 728                 }, false);
 729                 this.process_dlg.hide();
 730                 this.selectui.hide();
 731             }
 732             if (!this.process_dlg) {
 733                 this.process_dlg_node = Y.Node.create(M.core_filepicker.templates.processexistingfile);
 734                 var node = this.process_dlg_node;
 735                 node.generateID();
 736                 this.process_dlg = new M.core.dialogue({
 737                     draggable    : true,
 738                     bodyContent  : node,
 739                     headerContent: M.util.get_string('fileexistsdialogheader', 'repository'),
 740                     centered     : true,
 741                     modal        : true,
 742                     visible      : false,
 743                     zIndex       : this.options.zIndex
 744                 });
 745                 node.one('.fp-dlg-butoverwrite').on('click', handleOverwrite, this);
 746                 node.one('.fp-dlg-butrename').on('click', handleRename, this);
 747                 node.one('.fp-dlg-butcancel').on('click', handleCancel, this);
 748                 if (this.options.env == 'editor') {
 749                     node.one('.fp-dlg-text').setContent(M.util.get_string('fileexistsdialog_editor', 'repository'));
 750                 } else {
 751                     node.one('.fp-dlg-text').setContent(M.util.get_string('fileexistsdialog_filemanager', 'repository'));
 752                 }
 753             }
 754             this.selectnode.removeClass('loading');
 755             this.process_dlg.dialogdata = data;
 756             this.process_dlg_node.one('.fp-dlg-butrename').setContent(M.util.get_string('renameto', 'repository', data.newfile.filename));
 757             this.process_dlg.show();
 758         },
 759         /** displays error instead of filepicker contents */
 760         display_error: function(errortext, errorcode) {
 761             this.fpnode.one('.fp-content').setContent(M.core_filepicker.templates.error);
 762             this.fpnode.one('.fp-content .fp-error').
 763                 addClass(errorcode).
 764                 setContent(Y.Escape.html(errortext));
 765         },
 766         /** displays message in a popup */
 767         print_msg: function(msg, type) {
 768             var header = M.util.get_string('error', 'moodle');
 769             if (type != 'error') {
 770                 type = 'info'; // one of only two types excepted
 771                 header = M.util.get_string('info', 'moodle');
 772             }
 773             if (!this.msg_dlg) {
 774                 this.msg_dlg_node = Y.Node.create(M.core_filepicker.templates.message);
 775                 this.msg_dlg_node.generateID();
 776
 777                 this.msg_dlg = new M.core.dialogue({
 778                     draggable    : true,
 779                     bodyContent  : this.msg_dlg_node,
 780                     centered     : true,
 781                     modal        : true,
 782                     visible      : false,
 783                     zIndex       : this.options.zIndex
 784                 });
 785                 this.msg_dlg_node.one('.fp-msg-butok').on('click', function(e) {
 786                     e.preventDefault();
 787                     this.msg_dlg.hide();
 788                 }, this);
 789             }
 790
 791             this.msg_dlg.set('headerContent', header);
 792             this.msg_dlg_node.removeClass('fp-msg-info').removeClass('fp-msg-error').addClass('fp-msg-'+type)
 793             this.msg_dlg_node.one('.fp-msg-text').setContent(Y.Escape.html(msg));
 794             this.msg_dlg.show();
 795         },
 796         view_files: function(appenditems) {
 797             this.viewbar_set_enabled(true);
 798             this.print_path();
 799             /*if ((appenditems == null) && (!this.filelist || !this.filelist.length) && !this.active_repo.hasmorepages) {
 800              // TODO do it via classes and adjust for each view mode!
 801                 // If there are no items and no next page, just display status message and quit
 802                 this.display_error(M.util.get_string('nofilesavailable', 'repository'), 'nofilesavailable');
 803                 return;
 804             }*/
 805             if (this.viewmode == 2) {
 806                 this.view_as_list(appenditems);
 807             } else if (this.viewmode == 3) {
 808                 this.view_as_table(appenditems);
 809             } else {
 810                 this.view_as_icons(appenditems);
 811             }
 812             this.fpnode.one('.fp-content').setAttribute('tabindex', '0');
 813             this.fpnode.one('.fp-content').focus();
 814             // display/hide the link for requesting next page
 815             if (!appenditems && this.active_repo.hasmorepages) {
 816                 if (!this.fpnode.one('.fp-content .fp-nextpage')) {
 817                     this.fpnode.one('.fp-content').append(M.core_filepicker.templates.nextpage);
 818                 }
 819                 this.fpnode.one('.fp-content .fp-nextpage').one('a,button').on('click', function(e) {
 820                     e.preventDefault();
 821                     this.fpnode.one('.fp-content .fp-nextpage').addClass('loading');
 822                     this.request_next_page();
 823                 }, this);
 824             }
 825             if (!this.active_repo.hasmorepages && this.fpnode.one('.fp-content .fp-nextpage')) {
 826                 this.fpnode.one('.fp-content .fp-nextpage').remove();
 827             }
 828             if (this.fpnode.one('.fp-content .fp-nextpage')) {
 829                 this.fpnode.one('.fp-content .fp-nextpage').removeClass('loading');
 830             }
 831             this.content_scrolled();
 832         },
 833         content_scrolled: function(e) {
 834             setTimeout(Y.bind(function() {
 835                 if (this.processingimages) {
 836                     return;
 837                 }
 838                 this.processingimages = true;
 839                 var scope = this,
 840                     fpcontent = this.fpnode.one('.fp-content'),
 841                     fpcontenty = fpcontent.getY(),
 842                     fpcontentheight = fpcontent.getStylePx('height'),
 843                     nextpage = fpcontent.one('.fp-nextpage'),
 844                     is_node_visible = function(node) {
 845                         var offset = node.getY()-fpcontenty;
 846                         if (offset <= fpcontentheight && (offset >=0 || offset+node.getStylePx('height')>=0)) {
 847                             return true;
 848                         }
 849                         return false;
 850                     };
 851                 // automatically load next page when 'more' link becomes visible
 852                 if (nextpage && !nextpage.hasClass('loading') && is_node_visible(nextpage)) {
 853                     nextpage.one('a,button').simulate('click');
 854                 }
 855                 // replace src for visible images that need to be lazy-loaded
 856                 if (scope.lazyloading) {
 857                     fpcontent.all('img').each( function(node) {
 858                         if (node.get('id') && scope.lazyloading[node.get('id')] && is_node_visible(node)) {
 859                             node.setImgRealSrc(scope.lazyloading);
 860                         }
 861                     });
 862                 }
 863                 this.processingimages = false;
 864             }, this), 200)
 865         },
 866         treeview_dynload: function(node, cb) {
 867             var retrieved_children = {};
 868             if (node.children) {
 869                 for (var i in node.children) {
 870                     retrieved_children[node.children[i].path] = node.children[i];
 871                 }
 872             }
 873             this.request({
 874                 action:'list',
 875                 client_id: this.options.client_id,
 876                 repository_id: this.active_repo.id,
 877                 path:node.path?node.path:'',
 878                 page:node.page?args.page:'',
 879                 scope:this,
 880                 callback: function(id, obj, args) {
 881                     var list = obj.list;
 882                     var scope = args.scope;
 883                     // check that user did not leave the view mode before recieving this response
 884                     if (!(scope.active_repo.id == obj.repo_id && scope.viewmode == 2 && node && node.getChildrenEl())) {
 885                         return;
 886                     }
 887                     if (cb != null) { // (in manual mode do not update current path)
 888                         scope.viewbar_set_enabled(true);
 889                         scope.parse_repository_options(obj);
 890                     }
 891                     node.highlight(false);
 892                     node.origlist = obj.list ? obj.list : null;
 893                     node.origpath = obj.path ? obj.path : null;
 894                     node.children = [];
 895                     for(k in list) {
 896                         if (list[k].children && retrieved_children[list[k].path]) {
 897                             // if this child is a folder and has already been retrieved
 898                             node.children[node.children.length] = retrieved_children[list[k].path];
 899                         } else {
 900                             // append new file to the list
 901                             scope.view_as_list([list[k]]);
 902                         }
 903                     }
 904                     if (cb == null) {
 905                         node.refresh();
 906                     } else {
 907                         // invoke callback requested by TreeView component
 908                         cb();
 909                     }
 910                     scope.content_scrolled();
 911                 }
 912             }, false);
 913         },
 914        classnamecallback : function(node) {
 915             var classname = '';
 916             if (node.children) {
 917                 classname = classname + ' fp-folder';
 918             }
 919             if (node.isref) {
 920                 classname = classname + ' fp-isreference';
 921             }
 922             if (node.iscontrolledlink) {
 923                 classname = classname + ' fp-iscontrolledlink';
 924             }
 925             if (node.refcount) {
 926                 classname = classname + ' fp-hasreferences';
 927             }
 928             if (node.originalmissing) {
 929                 classname = classname + ' fp-originalmissing';
 930             }
 931             return Y.Lang.trim(classname);
 932         },
 933         /** displays list of files in tree (list) view mode. If param appenditems is specified,
 934          * appends those items to the end of the list. Otherwise (default behaviour)
 935          * clears the contents and displays the items from this.filelist */
 936         view_as_list: function(appenditems) {
 937             var list = (appenditems != null) ? appenditems : this.filelist;
 938             this.viewmode = 2;
 939             if (!this.filelist || this.filelist.length==0 && (!this.filepath || !this.filepath.length)) {
 940                 this.display_error(M.util.get_string('nofilesavailable', 'repository'), 'nofilesavailable');
 941                 return;
 942             }
 943
 944             var element_template = Y.Node.create(M.core_filepicker.templates.listfilename);
 945             var options = {
 946                 viewmode : this.viewmode,
 947                 appendonly : (appenditems != null),
 948                 filenode : element_template,
 949                 callbackcontext : this,
 950                 callback : function(e, node) {
 951                     // TODO MDL-32736 e is not an event here but an object with properties 'event' and 'node'
 952                     if (!node.children) {
 953                         if (e.node.parent && e.node.parent.origpath) {
 954                             // set the current path
 955                             this.filepath = e.node.parent.origpath;
 956                             this.filelist = e.node.parent.origlist;
 957                             this.print_path();
 958                         }
 959                         this.select_file(node);
 960                     } else {
 961                         // save current path and filelist (in case we want to jump to other viewmode)
 962                         this.filepath = e.node.origpath;
 963                         this.filelist = e.node.origlist;
 964                         this.currentpath = e.node.path;
 965                         this.print_path();
 966                         this.content_scrolled();
 967                     }
 968                 },
 969                 classnamecallback : this.classnamecallback,
 970                 dynload : this.active_repo.dynload,
 971                 filepath : this.filepath,
 972                 treeview_dynload : this.treeview_dynload
 973             };
 974             this.fpnode.one('.fp-content').fp_display_filelist(options, list, this.lazyloading);
 975         },
 976         /** displays list of files in icon view mode. If param appenditems is specified,
 977          * appends those items to the end of the list. Otherwise (default behaviour)
 978          * clears the contents and displays the items from this.filelist */
 979         view_as_icons: function(appenditems) {
 980             this.viewmode = 1;
 981             var list = (appenditems != null) ? appenditems : this.filelist;
 982             var element_template = Y.Node.create(M.core_filepicker.templates.iconfilename);
 983             if ((appenditems == null) && (!this.filelist || !this.filelist.length)) {
 984                 this.display_error(M.util.get_string('nofilesavailable', 'repository'), 'nofilesavailable');
 985                 return;
 986             }
 987             var options = {
 988                 viewmode : this.viewmode,
 989                 appendonly : (appenditems != null),
 990                 filenode : element_template,
 991                 callbackcontext : this,
 992                 callback : function(e, node) {
 993                     if (e.preventDefault) {
 994                         e.preventDefault();
 995                     }
 996                     if(node.children) {
 997                         if (this.active_repo.dynload) {
 998                             this.list({'path':node.path});
 999                         } else {
1000                             this.filelist = node.children;
1001                             this.view_files();
1002                         }
1003                     } else {
1004                         this.select_file(node);
1005                     }
1006                 },
1007                 classnamecallback : this.classnamecallback
1008             };
1009             this.fpnode.one('.fp-content').fp_display_filelist(options, list, this.lazyloading);
1010         },
1011         /** displays list of files in table view mode. If param appenditems is specified,
1012          * appends those items to the end of the list. Otherwise (default behaviour)
1013          * clears the contents and displays the items from this.filelist */
1014         view_as_table: function(appenditems) {
1015             this.viewmode = 3;
1016             var list = (appenditems != null) ? appenditems : this.filelist;
1017             if (!appenditems && (!this.filelist || this.filelist.length==0) && !this.active_repo.hasmorepages) {
1018                 this.display_error(M.util.get_string('nofilesavailable', 'repository'), 'nofilesavailable');
1019                 return;
1020             }
1021             var element_template = Y.Node.create(M.core_filepicker.templates.listfilename);
1022             var options = {
1023                 viewmode : this.viewmode,
1024                 appendonly : (appenditems != null),
1025                 filenode : element_template,
1026                 callbackcontext : this,
1027                 sortable : !this.active_repo.hasmorepages,
1028                 callback : function(e, node) {
1029                     if (e.preventDefault) {e.preventDefault();}
1030                     if (node.children) {
1031                         if (this.active_repo.dynload) {
1032                             this.list({'path':node.path});
1033                         } else {
1034                             this.filelist = node.children;
1035                             this.view_files();
1036                         }
1037                     } else {
1038                         this.select_file(node);
1039                     }
1040                 },
1041                 classnamecallback : this.classnamecallback
1042             };
1043             this.fpnode.one('.fp-content').fp_display_filelist(options, list, this.lazyloading);
1044         },
1045         /** If more than one page available, requests and displays the files from the next page */
1046         request_next_page: function() {
1047             if (!this.active_repo.hasmorepages || this.active_repo.nextpagerequested) {
1048                 // nothing to load
1049                 return;
1050             }
1051             this.active_repo.nextpagerequested = true;
1052             var nextpage = this.active_repo.page+1;
1053             var args = {
1054                 page: nextpage,
1055                 repo_id: this.active_repo.id
1056             };
1057             var action = this.active_repo.issearchresult ? 'search' : 'list';
1058             this.request({
1059                 path: this.currentpath,
1060                 scope: this,
1061                 action: action,
1062                 client_id: this.options.client_id,
1063                 repository_id: args.repo_id,
1064                 params: args,
1065                 callback: function(id, obj, args) {
1066                     var scope = args.scope;
1067                     // Check that we are still in the same repository and are expecting this page. We have no way
1068                     // to compare the requested page and the one returned, so we assume that if the last chunk
1069                     // of the breadcrumb is similar, then we probably are on the same page.
1070                     var samepage = true;
1071                     if (obj.path && scope.filepath) {
1072                         var pathbefore = scope.filepath[scope.filepath.length-1];
1073                         var pathafter = obj.path[obj.path.length-1];
1074                         if (pathbefore.path != pathafter.path) {
1075                             samepage = false;
1076                         }
1077                     }
1078                     if (scope.active_repo.hasmorepages && obj.list && obj.page &&
1079                             obj.repo_id == scope.active_repo.id &&
1080                             obj.page == scope.active_repo.page+1 && samepage) {
1081                         scope.parse_repository_options(obj, true);
1082                         scope.view_files(obj.list)
1083                     }
1084                 }
1085             }, false);
1086         },
1087         select_file: function(args) {
1088             var argstitle = args.title;
1089             // Limit the string length so it fits nicely on mobile devices
1090             var titlelength = 30;
1091             if (argstitle.length > titlelength) {
1092                 argstitle = argstitle.substring(0, titlelength) + '...';
1093             }
1094             Y.one('#fp-file_label_'+this.options.client_id).setContent(Y.Escape.html(M.util.get_string('select', 'repository')+' '+argstitle));
1095             this.selectui.show();
1096             Y.one('#'+this.selectnode.get('id')).focus();
1097             var client_id = this.options.client_id;
1098             var selectnode = this.selectnode;
1099             var return_types = this.options.repositories[this.active_repo.id].return_types;
1100             selectnode.removeClass('loading');
1101             selectnode.one('.fp-saveas input').set('value', args.title);
1102
1103             var imgnode = Y.Node.create('<img/>').
1104                 set('src', args.realthumbnail ? args.realthumbnail : args.thumbnail).
1105                 setStyle('maxHeight', ''+(args.thumbnail_height ? args.thumbnail_height : 90)+'px').
1106                 setStyle('maxWidth', ''+(args.thumbnail_width ? args.thumbnail_width : 90)+'px');
1107             selectnode.one('.fp-thumbnail').setContent('').appendChild(imgnode);
1108
1109             // filelink is the array of file-link-types available for this repository in this env
1110             var filelinktypes = [2/*FILE_INTERNAL*/,1/*FILE_EXTERNAL*/,4/*FILE_REFERENCE*/,8/*FILE_CONTROLLED_LINK*/];
1111             var filelink = {}, firstfilelink = null, filelinkcount = 0;
1112             for (var i in filelinktypes) {
1113                 var allowed = (return_types & filelinktypes[i]) &&
1114                     (this.options.return_types & filelinktypes[i]);
1115                 if (filelinktypes[i] == 1/*FILE_EXTERNAL*/ && !this.options.externallink && this.options.env == 'editor') {
1116                     // special configuration setting 'repositoryallowexternallinks' may prevent
1117                     // using external links in editor environment
1118                     allowed = false;
1119                 }
1120                 filelink[filelinktypes[i]] = allowed;
1121                 firstfilelink = (firstfilelink==null && allowed) ? filelinktypes[i] : firstfilelink;
1122                 filelinkcount += allowed ? 1 : 0;
1123             }
1124             var defaultreturntype = this.options.repositories[this.active_repo.id].defaultreturntype;
1125             if (defaultreturntype) {
1126                 if (filelink[defaultreturntype]) {
1127                     firstfilelink = defaultreturntype;
1128                 }
1129             }
1130             // make radio buttons enabled if this file-link-type is available and only if there are more than one file-link-type option
1131             // check the first available file-link-type option
1132             for (var linktype in filelink) {
1133                 var el = selectnode.one('.fp-linktype-'+linktype);
1134                 el.addClassIf('uneditable', !(filelink[linktype] && filelinkcount>1));
1135                 el.one('input').set('checked', (firstfilelink == linktype) ? 'checked' : '').simulate('change');
1136             }
1137
1138             // TODO MDL-32532: attributes 'hasauthor' and 'haslicense' need to be obsolete,
1139             selectnode.one('.fp-setauthor input').set('value', args.author ? args.author : this.options.author);
1140             this.set_selected_license(selectnode.one('.fp-setlicense'), args.license);
1141             selectnode.one('form #filesource-'+client_id).set('value', args.source);
1142             selectnode.one('form #filesourcekey-'+client_id).set('value', args.sourcekey);
1143
1144             // display static information about a file (when known)
1145             var attrs = ['datemodified','datecreated','size','license','author','dimensions'];
1146             for (var i in attrs) {
1147                 if (selectnode.one('.fp-'+attrs[i])) {
1148                     var value = (args[attrs[i]+'_f']) ? args[attrs[i]+'_f'] : (args[attrs[i]] ? args[attrs[i]] : '');
1149                     selectnode.one('.fp-'+attrs[i]).addClassIf('fp-unknown', ''+value == '')
1150                         .one('.fp-value').setContent(Y.Escape.html(value));
1151                 }
1152             }
1153         },
1154         setup_select_file: function() {
1155             var client_id = this.options.client_id;
1156             var selectnode = this.selectnode;
1157             var getfile = selectnode.one('.fp-select-confirm');
1158             // bind labels with corresponding inputs
1159             selectnode.all('.fp-saveas,.fp-linktype-2,.fp-linktype-1,.fp-linktype-4,fp-linktype-8,.fp-setauthor,.fp-setlicense').each(function (node) {
1160                 node.all('label').set('for', node.one('input,select').generateID());
1161             });
1162             selectnode.one('.fp-linktype-2 input').setAttrs({value: 2, name: 'linktype'});
1163             selectnode.one('.fp-linktype-1 input').setAttrs({value: 1, name: 'linktype'});
1164             selectnode.one('.fp-linktype-4 input').setAttrs({value: 4, name: 'linktype'});
1165             selectnode.one('.fp-linktype-8 input').setAttrs({value: 8, name: 'linktype'});
1166             var changelinktype = function(e) {
1167                 if (e.currentTarget.get('checked')) {
1168                     var allowinputs = e.currentTarget.get('value') != 1/*FILE_EXTERNAL*/;
1169                     selectnode.all('.fp-setauthor,.fp-setlicense,.fp-saveas').each(function(node){
1170                         node.addClassIf('uneditable', !allowinputs);
1171                         node.all('input,select').set('disabled', allowinputs?'':'disabled');
1172                     });
1173                 }
1174             };
1175             selectnode.all('.fp-linktype-2,.fp-linktype-1,.fp-linktype-4,.fp-linktype-8').each(function (node) {
1176                 node.one('input').on('change', changelinktype, this);
1177             });
1178             this.populate_licenses_select(selectnode.one('.fp-setlicense select'));
1179             // register event on clicking submit button
1180             getfile.on('click', function(e) {
1181                 e.preventDefault();
1182                 var client_id = this.options.client_id;
1183                 var scope = this;
1184                 var repository_id = this.active_repo.id;
1185                 var title = selectnode.one('.fp-saveas input').get('value');
1186                 var filesource = selectnode.one('form #filesource-'+client_id).get('value');
1187                 var filesourcekey = selectnode.one('form #filesourcekey-'+client_id).get('value');
1188                 var params = {'title':title, 'source':filesource, 'savepath': this.options.savepath, sourcekey: filesourcekey};
1189                 var license = selectnode.one('.fp-setlicense select');
1190                 if (license) {
1191                     params['license'] = license.get('value');
1192                     var origlicense = selectnode.one('.fp-license .fp-value');
1193                     if (origlicense) {
1194                         origlicense = origlicense.getContent();
1195                     }
1196                     this.set_preference('recentlicense', license.get('value'));
1197                 }
1198                 params['author'] = selectnode.one('.fp-setauthor input').get('value');
1199
1200                 var return_types = this.options.repositories[this.active_repo.id].return_types;
1201                 if (this.options.env == 'editor') {
1202                     // in editor, images are stored in '/' only
1203                     params.savepath = '/';
1204                 }
1205                 if ((this.options.externallink || this.options.env != 'editor') &&
1206                             (return_types & 1/*FILE_EXTERNAL*/) &&
1207                             (this.options.return_types & 1/*FILE_EXTERNAL*/) &&
1208                             selectnode.one('.fp-linktype-1 input').get('checked')) {
1209                     params['linkexternal'] = 'yes';
1210                 } else if ((return_types & 4/*FILE_REFERENCE*/) &&
1211                         (this.options.return_types & 4/*FILE_REFERENCE*/) &&
1212                         selectnode.one('.fp-linktype-4 input').get('checked')) {
1213                     params['usefilereference'] = '1';
1214                 } else if ((return_types & 8/*FILE_CONTROLLED_LINK*/) &&
1215                         (this.options.return_types & 8/*FILE_CONTROLLED_LINK*/) &&
1216                         selectnode.one('.fp-linktype-8 input').get('checked')) {
1217                     params['usecontrolledlink'] = '1';
1218                 }
1219
1220                 selectnode.addClass('loading');
1221                 this.request({
1222                     action:'download',
1223                     client_id: client_id,
1224                     repository_id: repository_id,
1225                     'params': params,
1226                     onerror: function(id, obj, args) {
1227                         selectnode.removeClass('loading');
1228                         scope.selectui.hide();
1229                     },
1230                     callback: function(id, obj, args) {
1231                         selectnode.removeClass('loading');
1232                         if (obj.event == 'fileexists') {
1233                             scope.process_existing_file(obj);
1234                             return;
1235                         }
1236                         if (scope.options.editor_target && scope.options.env=='editor') {
1237                             scope.options.editor_target.value=obj.url;
1238                             scope.options.editor_target.dispatchEvent(new Event('change'), {'bubbles': true});
1239                         }
1240                         scope.hide();
1241                         obj.client_id = client_id;
1242                         var formcallback_scope = args.scope.options.magicscope ? args.scope.options.magicscope : args.scope;
1243                         scope.options.formcallback.apply(formcallback_scope, [obj]);
1244                     }
1245                 }, false);
1246             }, this);
1247             var elform = selectnode.one('form');
1248             elform.appendChild(Y.Node.create('<input/>').
1249                 setAttrs({type:'hidden',id:'filesource-'+client_id}));
1250             elform.appendChild(Y.Node.create('<input/>').
1251                 setAttrs({type:'hidden',id:'filesourcekey-'+client_id}));
1252             elform.on('keydown', function(e) {
1253                 if (e.keyCode == 13) {
1254                     getfile.simulate('click');
1255                     e.preventDefault();
1256                 }
1257             }, this);
1258             var cancel = selectnode.one('.fp-select-cancel');
1259             cancel.on('click', function(e) {
1260                 e.preventDefault();
1261                 this.selectui.hide();
1262             }, this);
1263         },
1264         wait: function() {
1265             // First check there isn't already an interval in play, and if there is kill it now.
1266             if (this.waitinterval != null) {
1267                 clearInterval(this.waitinterval);
1268             }
1269             // Prepare the root node we will set content for and the loading template we want to display as a YUI node.
1270             var root = this.fpnode.one('.fp-content');
1271             var content = Y.Node.create(M.core_filepicker.templates.loading).addClass('fp-content-hidden').setStyle('opacity', 0);
1272             var count = 0;
1273             // Initiate an interval, we will have a count which will increment every 100 milliseconds.
1274             // Count 0 - the loading icon will have visibility set to hidden (invisible) and have an opacity of 0 (invisible also)
1275             // Count 5 - the visiblity will be switched to visible but opacity will still be at 0 (inivisible)
1276             // Counts 6 - 15 opacity will be increased by 0.1 making the loading icon visible over the period of a second
1277             // Count 16 - The interval will be cancelled.
1278             var interval = setInterval(function(){
1279                 if (!content || !root.contains(content) || count >= 15) {
1280                     clearInterval(interval);
1281                     return true;
1282                 }
1283                 if (count == 5) {
1284                     content.removeClass('fp-content-hidden');
1285                 } else if (count > 5) {
1286                     var opacity = parseFloat(content.getStyle('opacity'));
1287                     content.setStyle('opacity', opacity + 0.1);
1288                 }
1289                 count++;
1290                 return false;
1291             }, 100);
1292             // Store the wait interval so that we can check it in the future.
1293             this.waitinterval = interval;
1294             // Set the content to the loading template.
1295             root.setContent(content);
1296         },
1297         viewbar_set_enabled: function(mode) {
1298             var viewbar = this.fpnode.one('.fp-viewbar')
1299             if (viewbar) {
1300                 if (mode) {
1301                     viewbar.addClass('enabled').removeClass('disabled');
1302                     this.fpnode.all('.fp-vb-icons,.fp-vb-tree,.fp-vb-details').setAttribute("aria-disabled", "false");
1303                     this.fpnode.all('.fp-vb-icons,.fp-vb-tree,.fp-vb-details').setAttribute("tabindex", "");
1304                 } else {
1305                     viewbar.removeClass('enabled').addClass('disabled');
1306                     this.fpnode.all('.fp-vb-icons,.fp-vb-tree,.fp-vb-details').setAttribute("aria-disabled", "true");
1307                     this.fpnode.all('.fp-vb-icons,.fp-vb-tree,.fp-vb-details').setAttribute("tabindex", "-1");
1308                 }
1309             }
1310             this.fpnode.all('.fp-vb-icons,.fp-vb-tree,.fp-vb-details').removeClass('checked');
1311             var modes = {1:'icons', 2:'tree', 3:'details'};
1312             this.fpnode.all('.fp-vb-'+modes[this.viewmode]).addClass('checked');
1313         },
1314         viewbar_clicked: function(e) {
1315             e.preventDefault();
1316             var viewbar = this.fpnode.one('.fp-viewbar')
1317             if (!viewbar || !viewbar.hasClass('disabled')) {
1318                 if (e.currentTarget.hasClass('fp-vb-tree')) {
1319                     this.viewmode = 2;
1320                 } else if (e.currentTarget.hasClass('fp-vb-details')) {
1321                     this.viewmode = 3;
1322                 } else {
1323                     this.viewmode = 1;
1324                 }
1325                 this.viewbar_set_enabled(true)
1326                 this.view_files();
1327                 this.set_preference('recentviewmode', this.viewmode);
1328             }
1329         },
1330         render: function() {
1331             var client_id = this.options.client_id;
1332             var fpid = "filepicker-"+ client_id;
1333             var labelid = 'fp-dialog-label_'+ client_id;
1334             var width = 873;
1335             var draggable = true;
1336             this.fpnode = Y.Node.create(M.core_filepicker.templates.generallayout).
1337                 set('id', 'filepicker-'+client_id).set('aria-labelledby', labelid);
1338
1339             if (this.in_iframe()) {
1340                 width = Math.floor(window.innerWidth * 0.95);
1341                 draggable = false;
1342             }
1343
1344             this.mainui = new M.core.dialogue({
1345                 extraClasses : ['filepicker'],
1346                 draggable    : draggable,
1347                 bodyContent  : this.fpnode,
1348                 headerContent: '<h3 id="'+ labelid +'">'+ M.util.get_string('filepicker', 'repository') +'</h3>',
1349                 centered     : true,
1350                 modal        : true,
1351                 visible      : false,
1352                 width        : width+'px',
1353                 responsiveWidth : 768,
1354                 height       : '558px',
1355                 zIndex       : this.options.zIndex
1356             });
1357
1358             // create panel for selecting a file (initially hidden)
1359             this.selectnode = Y.Node.create(M.core_filepicker.templates.selectlayout).
1360                 set('id', 'filepicker-select-'+client_id).
1361                 set('aria-live', 'assertive').
1362                 set('role', 'dialog');
1363
1364             var fplabel = 'fp-file_label_'+ client_id;
1365             this.selectui = new M.core.dialogue({
1366                 headerContent: '<h3 id="' + fplabel +'">'+M.util.get_string('select', 'repository')+'</h3>',
1367                 draggable    : true,
1368                 width        : '450px',
1369                 bodyContent  : this.selectnode,
1370                 centered     : true,
1371                 modal        : true,
1372                 visible      : false,
1373                 zIndex       : this.options.zIndex
1374             });
1375             Y.one('#'+this.selectnode.get('id')).setAttribute('aria-labelledby', fplabel);
1376             // event handler for lazy loading of thumbnails and next page
1377             this.fpnode.one('.fp-content').on(['scroll','resize'], this.content_scrolled, this);
1378             // save template for one path element and location of path bar
1379             if (this.fpnode.one('.fp-path-folder')) {
1380                 this.pathnode = this.fpnode.one('.fp-path-folder');
1381                 this.pathbar = this.pathnode.get('parentNode');
1382                 this.pathbar.removeChild(this.pathnode);
1383             }
1384             // assign callbacks for view mode switch buttons
1385             this.fpnode.one('.fp-vb-icons').on('click', this.viewbar_clicked, this);
1386             this.fpnode.one('.fp-vb-tree').on('click', this.viewbar_clicked, this);
1387             this.fpnode.one('.fp-vb-details').on('click', this.viewbar_clicked, this);
1388
1389             // assign callbacks for toolbar links
1390             this.setup_toolbar();
1391             this.setup_select_file();
1392             this.hide_header();
1393
1394             // processing repository listing
1395             // Resort the repositories by sortorder
1396             var sorted_repositories = [];
1397             var i;
1398             for (i in this.options.repositories) {
1399                 sorted_repositories[i] = this.options.repositories[i];
1400             }
1401             sorted_repositories.sort(function(a,b){return a.sortorder-b.sortorder});
1402             // extract one repository template and repeat it for all repositories available,
1403             // set name and icon and assign callbacks
1404             var reponode = this.fpnode.one('.fp-repo');
1405             if (reponode) {
1406                 var list = reponode.get('parentNode');
1407                 list.removeChild(reponode);
1408                 for (i in sorted_repositories) {
1409                     var repository = sorted_repositories[i];
1410                     var h = (parseInt(i) == 0) ? parseInt(i) : parseInt(i) - 1,
1411                         j = (parseInt(i) == Object.keys(sorted_repositories).length - 1) ? parseInt(i) : parseInt(i) + 1;
1412                     var previousrepository = sorted_repositories[h];
1413                     var nextrepository = sorted_repositories[j];
1414                     var node = reponode.cloneNode(true);
1415                     list.appendChild(node);
1416                     node.
1417                         set('id', 'fp-repo-'+client_id+'-'+repository.id).
1418                         on('click', function(e, repository_id) {
1419                             e.preventDefault();
1420                             this.set_preference('recentrepository', repository_id);
1421                             this.hide_header();
1422                             this.list({'repo_id':repository_id});
1423                         }, this /*handler running scope*/, repository.id/*second argument of handler*/);
1424                     node.on('key', function(e, previousrepositoryid, nextrepositoryid, clientid, repositoryid) {
1425                         this.changeHighlightedRepository(e, clientid, repositoryid, previousrepositoryid, nextrepositoryid);
1426                     }, 'down:38,40', this, previousrepository.id, nextrepository.id, client_id, repository.id);
1427                     node.on('key', function(e, repositoryid) {
1428                         e.preventDefault();
1429                         this.set_preference('recentrepository', repositoryid);
1430                         this.hide_header();
1431                         this.list({'repo_id': repositoryid});
1432                     }, 'enter', this, repository.id);
1433                     node.one('.fp-repo-name').setContent(Y.Escape.html(repository.name));
1434                     node.one('.fp-repo-icon').set('src', repository.icon);
1435                     if (i==0) {
1436                         node.addClass('first');
1437                     }
1438                     if (i==sorted_repositories.length-1) {
1439                         node.addClass('last');
1440                     }
1441                     if (i%2) {
1442                         node.addClass('even');
1443                     } else {
1444                         node.addClass('odd');
1445                     }
1446                 }
1447             }
1448             // display error if no repositories found
1449             if (sorted_repositories.length==0) {
1450                 this.display_error(M.util.get_string('norepositoriesavailable', 'repository'), 'norepositoriesavailable')
1451             }
1452             // display repository that was used last time
1453             this.mainui.show();
1454             this.show_recent_repository();
1455         },
1456         /**
1457          * Change the highlighted repository to a new one.
1458          *
1459          * @param  {object} event The key event
1460          * @param  {integer} clientid The client id to identify the repo class.
1461          * @param  {integer} oldrepositoryid The repository id that we are removing the highlight for
1462          * @param  {integer} previousrepositoryid The previous repository id.
1463          * @param  {integer} nextrepositoryid The next repository id.
1464          */
1465         changeHighlightedRepository: function(event, clientid, oldrepositoryid, previousrepositoryid, nextrepositoryid) {
1466             event.preventDefault();
1467             var newrepositoryid = (event.keyCode == '40') ? nextrepositoryid : previousrepositoryid;
1468             this.fpnode.one('#fp-repo-' + clientid + '-' + oldrepositoryid).setAttribute('tabindex', '-1');
1469             this.fpnode.one('#fp-repo-' + clientid + '-' + newrepositoryid)
1470                     .setAttribute('tabindex', '0')
1471                     .focus();
1472         },
1473         parse_repository_options: function(data, appendtolist) {
1474             if (appendtolist) {
1475                 if (data.list) {
1476                     if (!this.filelist) {
1477                         this.filelist = [];
1478                     }
1479                     for (var i in data.list) {
1480                         this.filelist[this.filelist.length] = data.list[i];
1481                     }
1482                 }
1483             } else {
1484                 this.filelist = data.list?data.list:null;
1485                 this.lazyloading = {};
1486             }
1487             this.filepath = data.path?data.path:null;
1488             this.objecttag = data.object?data.object:null;
1489             this.active_repo = {};
1490             this.active_repo.issearchresult = data.issearchresult ? true : false;
1491             this.active_repo.defaultreturntype = data.defaultreturntype?data.defaultreturntype:null;
1492             this.active_repo.dynload = data.dynload?data.dynload:false;
1493             this.active_repo.pages = Number(data.pages?data.pages:null);
1494             this.active_repo.page = Number(data.page?data.page:null);
1495             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))
1496             this.active_repo.id = data.repo_id?data.repo_id:null;
1497             this.active_repo.nosearch = (data.login || data.nosearch); // this is either login form or 'nosearch' attribute set
1498             this.active_repo.norefresh = (data.login || data.norefresh); // this is either login form or 'norefresh' attribute set
1499             this.active_repo.nologin = (data.login || data.nologin); // this is either login form or 'nologin' attribute is set
1500             this.active_repo.logouttext = data.logouttext?data.logouttext:null;
1501             this.active_repo.logouturl = (data.logouturl || '');
1502             this.active_repo.message = (data.message || '');
1503             this.active_repo.help = data.help?data.help:null;
1504             this.active_repo.manage = data.manage?data.manage:null;
1505             this.print_header();
1506         },
1507         print_login: function(data) {
1508             this.parse_repository_options(data);
1509             var client_id = this.options.client_id;
1510             var repository_id = data.repo_id;
1511             var l = this.logindata = data.login;
1512             var loginurl = '';
1513             var action = data['login_btn_action'] ? data['login_btn_action'] : 'login';
1514             var form_id = 'fp-form-'+client_id;
1515
1516             var loginform_node = Y.Node.create(M.core_filepicker.templates.loginform);
1517             loginform_node.one('form').set('id', form_id);
1518             this.fpnode.one('.fp-content').setContent('').appendChild(loginform_node);
1519             var templates = {
1520                 'popup' : loginform_node.one('.fp-login-popup'),
1521                 'textarea' : loginform_node.one('.fp-login-textarea'),
1522                 'select' : loginform_node.one('.fp-login-select'),
1523                 'text' : loginform_node.one('.fp-login-text'),
1524                 'radio' : loginform_node.one('.fp-login-radiogroup'),
1525                 'checkbox' : loginform_node.one('.fp-login-checkbox'),
1526                 'input' : loginform_node.one('.fp-login-input')
1527             };
1528             var container;
1529             for (var i in templates) {
1530                 if (templates[i]) {
1531                     container = templates[i].get('parentNode');
1532                     container.removeChild(templates[i]);
1533                 }
1534             }
1535
1536             for(var k in l) {
1537                 if (templates[l[k].type]) {
1538                     var node = templates[l[k].type].cloneNode(true);
1539                 } else {
1540                     node = templates['input'].cloneNode(true);
1541                 }
1542                 if (l[k].type == 'popup') {
1543                     // submit button
1544                     loginurl = l[k].url;
1545                     var popupbutton = node.one('button');
1546                     popupbutton.on('click', function(e){
1547                         M.core_filepicker.active_filepicker = this;
1548                         window.open(loginurl, 'repo_auth', 'location=0,status=0,width=500,height=300,scrollbars=yes');
1549                         e.preventDefault();
1550                     }, this);
1551                     loginform_node.one('form').on('keydown', function(e) {
1552                         if (e.keyCode == 13) {
1553                             popupbutton.simulate('click');
1554                             e.preventDefault();
1555                         }
1556                     }, this);
1557                     loginform_node.all('.fp-login-submit').remove();
1558                     action = 'popup';
1559                 } else if(l[k].type=='textarea') {
1560                     // textarea element
1561                     if (node.one('label')) {
1562                         node.one('label').set('for', l[k].id).setContent(l[k].label);
1563                     }
1564                     node.one('textarea').setAttrs({id:l[k].id, name:l[k].name});
1565                 } else if(l[k].type=='select') {
1566                     // select element
1567                     if (node.one('label')) {
1568                         node.one('label').set('for', l[k].id).setContent(l[k].label);
1569                     }
1570                     node.one('select').setAttrs({id:l[k].id, name:l[k].name}).setContent('');
1571                     for (i in l[k].options) {
1572                         node.one('select').appendChild(
1573                             Y.Node.create('<option/>').
1574                                 set('value', l[k].options[i].value).
1575                                 setContent(l[k].options[i].label));
1576                     }
1577                 } else if(l[k].type=='radio') {
1578                     // radio input element
1579                     node.all('label').setContent(l[k].label);
1580                     var list = l[k].value.split('|');
1581                     var labels = l[k].value_label.split('|');
1582                     var radionode = null;
1583                     for(var item in list) {
1584                         if (radionode == null) {
1585                             radionode = node.one('.fp-login-radio');
1586                             radionode.one('input').set('checked', 'checked');
1587                         } else {
1588                             var x = radionode.cloneNode(true);
1589                             radionode.insert(x, 'after');
1590                             radionode = x;
1591                             radionode.one('input').set('checked', '');
1592                         }
1593                         radionode.one('input').setAttrs({id:''+l[k].id+item, name:l[k].name,
1594                             type:l[k].type, value:list[item]});
1595                         radionode.all('label').setContent(labels[item]).set('for', ''+l[k].id+item)
1596                     }
1597                     if (radionode == null) {
1598                         node.one('.fp-login-radio').remove();
1599                     }
1600                 } else {
1601                     // input element
1602                     if (node.one('label')) { node.one('label').set('for', l[k].id).setContent(l[k].label) }
1603                     node.one('input').
1604                         set('type', l[k].type).
1605                         set('id', l[k].id).
1606                         set('name', l[k].name).
1607                         set('value', l[k].value?l[k].value:'')
1608                 }
1609                 container.appendChild(node);
1610             }
1611             // custom label text for submit button
1612             if (data['login_btn_label']) {
1613                 loginform_node.all('.fp-login-submit').setContent(data['login_btn_label'])
1614             }
1615             // register button action for login and search
1616             if (action == 'login' || action == 'search') {
1617                 loginform_node.one('.fp-login-submit').on('click', function(e){
1618                     e.preventDefault();
1619                     this.hide_header();
1620                     this.request({
1621                         'scope': this,
1622                         'action':(action == 'search') ? 'search' : 'signin',
1623                         'path': '',
1624                         'client_id': client_id,
1625                         'repository_id': repository_id,
1626                         'form': {id:form_id, upload:false, useDisabled:true},
1627                         'callback': this.display_response
1628                     }, true);
1629                 }, this);
1630             }
1631             // if 'Enter' is pressed in the form, simulate the button click
1632             if (loginform_node.one('.fp-login-submit')) {
1633                 loginform_node.one('form').on('keydown', function(e) {
1634                     if (e.keyCode == 13) {
1635                         loginform_node.one('.fp-login-submit').simulate('click')
1636                         e.preventDefault();
1637                     }
1638                 }, this);
1639             }
1640         },
1641         display_response: function(id, obj, args) {
1642             var scope = args.scope;
1643             // highlight the current repository in repositories list
1644             scope.fpnode.all('.fp-repo.active')
1645                     .removeClass('active')
1646                     .setAttribute('aria-selected', 'false')
1647                     .setAttribute('tabindex', '-1');
1648             scope.fpnode.all('.nav-link')
1649                     .removeClass('active')
1650                     .setAttribute('aria-selected', 'false')
1651                     .setAttribute('tabindex', '-1');
1652             var activenode = scope.fpnode.one('#fp-repo-' + scope.options.client_id + '-' + obj.repo_id);
1653             activenode.addClass('active')
1654                     .setAttribute('aria-selected', 'true')
1655                     .setAttribute('tabindex', '0');
1656             activenode.all('.nav-link').addClass('active');
1657             // add class repository_REPTYPE to the filepicker (for repository-specific styles)
1658             for (var i in scope.options.repositories) {
1659                 scope.fpnode.removeClass('repository_'+scope.options.repositories[i].type)
1660             }
1661             if (obj.repo_id && scope.options.repositories[obj.repo_id]) {
1662                 scope.fpnode.addClass('repository_'+scope.options.repositories[obj.repo_id].type)
1663             }
1664             Y.one('.file-picker .fp-repo-items').focus();
1665
1666             // display response
1667             if (obj.login) {
1668                 scope.viewbar_set_enabled(false);
1669                 scope.print_login(obj);
1670             } else if (obj.upload) {
1671                 scope.viewbar_set_enabled(false);
1672                 scope.parse_repository_options(obj);
1673                 scope.create_upload_form(obj);
1674             } else if (obj.object) {
1675                 M.core_filepicker.active_filepicker = scope;
1676                 scope.viewbar_set_enabled(false);
1677                 scope.parse_repository_options(obj);
1678                 scope.create_object_container(obj.object);
1679             } else if (obj.list) {
1680                 scope.viewbar_set_enabled(true);
1681                 scope.parse_repository_options(obj);
1682                 scope.view_files();
1683             }
1684         },
1685         list: function(args) {
1686             if (!args) {
1687                 args = {};
1688             }
1689             if (!args.repo_id) {
1690                 args.repo_id = this.active_repo.id;
1691             }
1692             if (!args.path) {
1693                 args.path = '';
1694             }
1695             this.currentpath = args.path;
1696             this.request({
1697                 action: 'list',
1698                 client_id: this.options.client_id,
1699                 repository_id: args.repo_id,
1700                 path: args.path,
1701                 page: args.page,
1702                 scope: this,
1703                 callback: this.display_response
1704             }, true);
1705         },
1706         populate_licenses_select: function(node) {
1707             if (!node) {
1708                 return;
1709             }
1710             node.setContent('');
1711             var licenses = this.options.licenses;
1712             var recentlicense = this.get_preference('recentlicense');
1713             if (recentlicense) {
1714                 this.options.defaultlicense=recentlicense;
1715             }
1716             for (var i in licenses) {
1717                 var option = Y.Node.create('<option/>').
1718                     set('selected', (this.options.defaultlicense==licenses[i].shortname)).
1719                     set('value', licenses[i].shortname).
1720                     setContent(Y.Escape.html(licenses[i].fullname));
1721                 node.appendChild(option)
1722             }
1723         },
1724         set_selected_license: function(node, value) {
1725             var licenseset = false;
1726             node.all('option').each(function(el) {
1727                 if (el.get('value')==value || el.getContent()==value) {
1728                     el.set('selected', true);
1729                     licenseset = true;
1730                 }
1731             });
1732             if (!licenseset) {
1733                 // we did not find the value in the list
1734                 var recentlicense = this.get_preference('recentlicense');
1735                 node.all('option[selected]').set('selected', false);
1736                 node.all('option[value='+recentlicense+']').set('selected', true);
1737             }
1738         },
1739         create_object_container: function(data) {
1740             var content = this.fpnode.one('.fp-content');
1741             content.setContent('');
1742             //var str = '<object data="'+data.src+'" type="'+data.type+'" width="98%" height="98%" id="container_object" class="fp-object-container mdl-align"></object>';
1743             var container = Y.Node.create('<object/>').
1744                 setAttrs({data:data.src, type:data.type, id:'container_object'}).
1745                 addClass('fp-object-container');
1746             content.setContent('').appendChild(container);
1747         },
1748         create_upload_form: function(data) {
1749             var client_id = this.options.client_id;
1750             var id = data.upload.id+'_'+client_id;
1751             var content = this.fpnode.one('.fp-content');
1752             var template_name = 'uploadform_'+this.options.repositories[data.repo_id].type;
1753             var template = M.core_filepicker.templates[template_name] || M.core_filepicker.templates['uploadform'];
1754             content.setContent(template);
1755
1756             content.all('.fp-file,.fp-saveas,.fp-setauthor,.fp-setlicense').each(function (node) {
1757                 node.all('label').set('for', node.one('input,select').generateID());
1758             });
1759             content.one('form').set('id', id);
1760             content.one('.fp-file input').set('name', 'repo_upload_file');
1761             if (data.upload.label && content.one('.fp-file label')) {
1762                 content.one('.fp-file label').setContent(data.upload.label);
1763             }
1764             content.one('.fp-saveas input').set('name', 'title');
1765             content.one('.fp-setauthor input').setAttrs({name:'author', value:this.options.author});
1766             content.one('.fp-setlicense select').set('name', 'license');
1767             this.populate_licenses_select(content.one('.fp-setlicense select'))
1768             // append hidden inputs to the upload form
1769             content.one('form').appendChild(Y.Node.create('<input/>').
1770                 setAttrs({type:'hidden',name:'itemid',value:this.options.itemid}));
1771             var types = this.options.accepted_types;
1772             for (var i in types) {
1773                 content.one('form').appendChild(Y.Node.create('<input/>').
1774                     setAttrs({type:'hidden',name:'accepted_types[]',value:types[i]}));
1775             }
1776
1777             var scope = this;
1778             content.one('.fp-upload-btn').on('click', function(e) {
1779                 e.preventDefault();
1780                 var license = content.one('.fp-setlicense select');
1781
1782                 this.set_preference('recentlicense', license.get('value'));
1783                 if (!content.one('.fp-file input').get('value')) {
1784                     scope.print_msg(M.util.get_string('nofilesattached', 'repository'), 'error');
1785                     return false;
1786                 }
1787                 this.hide_header();
1788                 scope.request({
1789                         scope: scope,
1790                         action:'upload',
1791                         client_id: client_id,
1792                         params: {'savepath':scope.options.savepath},
1793                         repository_id: scope.active_repo.id,
1794                         form: {id: id, upload:true},
1795                         onerror: function(id, o, args) {
1796                             scope.create_upload_form(data);
1797                         },
1798                         callback: function(id, o, args) {
1799                             if (o.event == 'fileexists') {
1800                                 scope.create_upload_form(data);
1801                                 scope.process_existing_file(o);
1802                                 return;
1803                             }
1804                             if (scope.options.editor_target&&scope.options.env=='editor') {
1805                                 scope.options.editor_target.value=o.url;
1806                                 scope.options.editor_target.dispatchEvent(new Event('change'), {'bubbles': true});
1807                             }
1808                             scope.hide();
1809                             o.client_id = client_id;
1810                             var formcallback_scope = args.scope.options.magicscope ? args.scope.options.magicscope : args.scope;
1811                             scope.options.formcallback.apply(formcallback_scope, [o]);
1812                         }
1813                 }, true);
1814             }, this);
1815         },
1816         /** setting handlers and labels for elements in toolbar. Called once during the initial render of filepicker */
1817         setup_toolbar: function() {
1818             var client_id = this.options.client_id;
1819             var toolbar = this.fpnode.one('.fp-toolbar');
1820             toolbar.one('.fp-tb-logout').one('a,button').on('click', function(e) {
1821                 e.preventDefault();
1822                 if (!this.active_repo.nologin) {
1823                     this.hide_header();
1824                     this.request({
1825                         action:'logout',
1826                         client_id: this.options.client_id,
1827                         repository_id: this.active_repo.id,
1828                         path:'',
1829                         callback: this.display_response
1830                     }, true);
1831                 }
1832                 if (this.active_repo.logouturl) {
1833                     window.open(this.active_repo.logouturl, 'repo_auth', 'location=0,status=0,width=500,height=300,scrollbars=yes');
1834                 }
1835             }, this);
1836             toolbar.one('.fp-tb-refresh').one('a,button').on('click', function(e) {
1837                 e.preventDefault();
1838                 if (!this.active_repo.norefresh) {
1839                     this.list({ path: this.currentpath });
1840                 }
1841             }, this);
1842             toolbar.one('.fp-tb-search form').
1843                 set('method', 'POST').
1844                 set('id', 'fp-tb-search-'+client_id).
1845                 on('submit', function(e) {
1846                     e.preventDefault();
1847                     if (!this.active_repo.nosearch) {
1848                         this.request({
1849                             scope: this,
1850                             action:'search',
1851                             client_id: this.options.client_id,
1852                             repository_id: this.active_repo.id,
1853                             form: {id: 'fp-tb-search-'+client_id, upload:false, useDisabled:true},
1854                             callback: this.display_response
1855                         }, true);
1856                     }
1857             }, this);
1858
1859             // it does not matter what kind of element is .fp-tb-manage, we create a dummy <a>
1860             // element and use it to open url on click event
1861             var managelnk = Y.Node.create('<a/>').
1862                 setAttrs({id:'fp-tb-manage-'+client_id+'-link', target:'_blank'}).
1863                 setStyle('display', 'none');
1864             toolbar.append(managelnk);
1865             toolbar.one('.fp-tb-manage').one('a,button').
1866                 on('click', function(e) {
1867                     e.preventDefault();
1868                     managelnk.simulate('click')
1869                 });
1870
1871             // same with .fp-tb-help
1872             var helplnk = Y.Node.create('<a/>').
1873                 setAttrs({id:'fp-tb-help-'+client_id+'-link', target:'_blank'}).
1874                 setStyle('display', 'none');
1875             toolbar.append(helplnk);
1876             toolbar.one('.fp-tb-help').one('a,button').
1877                 on('click', function(e) {
1878                     e.preventDefault();
1879                     helplnk.simulate('click')
1880                 });
1881         },
1882         hide_header: function() {
1883             if (this.fpnode.one('.fp-toolbar')) {
1884                 this.fpnode.one('.fp-toolbar').addClass('empty');
1885             }
1886             if (this.pathbar) {
1887                 this.pathbar.setContent('').addClass('empty');
1888             }
1889         },
1890         print_header: function() {
1891             var r = this.active_repo;
1892             var scope = this;
1893             var client_id = this.options.client_id;
1894             this.hide_header();
1895             this.print_path();
1896             var toolbar = this.fpnode.one('.fp-toolbar');
1897             if (!toolbar) { return; }
1898
1899             var enable_tb_control = function(node, enabled) {
1900                 if (!node) { return; }
1901                 node.addClassIf('disabled', !enabled).addClassIf('enabled', enabled)
1902                 if (enabled) {
1903                     toolbar.removeClass('empty');
1904                 }
1905             }
1906
1907             // TODO 'back' permanently disabled for now. Note, flickr_public uses 'Logout' for it!
1908             enable_tb_control(toolbar.one('.fp-tb-back'), false);
1909
1910             // search form
1911             enable_tb_control(toolbar.one('.fp-tb-search'), !r.nosearch);
1912             if(!r.nosearch) {
1913                 var searchform = toolbar.one('.fp-tb-search form');
1914                 searchform.setContent('');
1915                 this.request({
1916                     scope: this,
1917                     action:'searchform',
1918                     repository_id: this.active_repo.id,
1919                     callback: function(id, obj, args) {
1920                         if (obj.repo_id == scope.active_repo.id && obj.form) {
1921                             // if we did not jump to another repository meanwhile
1922                             searchform.setContent(obj.form);
1923                             // Highlight search text when user click for search.
1924                             var searchnode = searchform.one('input[name="s"]');
1925                             if (searchnode) {
1926                                 searchnode.once('click', function(e) {
1927                                     e.preventDefault();
1928                                     this.select();
1929                                 });
1930                             }
1931                         }
1932                     }
1933                 }, false);
1934             }
1935
1936             // refresh button
1937             // weather we use cache for this instance, this button will reload listing anyway
1938             enable_tb_control(toolbar.one('.fp-tb-refresh'), !r.norefresh);
1939
1940             // login button
1941             enable_tb_control(toolbar.one('.fp-tb-logout'), !r.nologin);
1942
1943             // manage url
1944             enable_tb_control(toolbar.one('.fp-tb-manage'), r.manage);
1945             Y.one('#fp-tb-manage-'+client_id+'-link').set('href', r.manage);
1946
1947             // help url
1948             enable_tb_control(toolbar.one('.fp-tb-help'), r.help);
1949             Y.one('#fp-tb-help-'+client_id+'-link').set('href', r.help);
1950
1951             // message
1952             enable_tb_control(toolbar.one('.fp-tb-message'), r.message);
1953             toolbar.one('.fp-tb-message').setContent(r.message);
1954         },
1955         print_path: function() {
1956             if (!this.pathbar) {
1957                 return;
1958             }
1959             this.pathbar.setContent('').addClass('empty');
1960             var p = this.filepath;
1961             if (p && p.length!=0 && this.viewmode != 2) {
1962                 for(var i = 0; i < p.length; i++) {
1963                     var el = this.pathnode.cloneNode(true);
1964                     this.pathbar.appendChild(el);
1965                     if (i == 0) {
1966                         el.addClass('first');
1967                     }
1968                     if (i == p.length-1) {
1969                         el.addClass('last');
1970                     }
1971                     if (i%2) {
1972                         el.addClass('even');
1973                     } else {
1974                         el.addClass('odd');
1975                     }
1976                     el.all('.fp-path-folder-name').setContent(Y.Escape.html(p[i].name));
1977                     el.on('click',
1978                             function(e, path) {
1979                                 e.preventDefault();
1980                                 this.list({'path':path});
1981                             },
1982                         this, p[i].path);
1983                 }
1984                 this.pathbar.removeClass('empty');
1985             }
1986         },
1987         hide: function() {
1988             this.selectui.hide();
1989             if (this.process_dlg) {
1990                 this.process_dlg.hide();
1991             }
1992             if (this.msg_dlg) {
1993                 this.msg_dlg.hide();
1994             }
1995             this.mainui.hide();
1996         },
1997         show: function() {
1998             if (this.fpnode) {
1999                 this.hide();
2000                 this.mainui.show();
2001                 this.show_recent_repository();
2002             } else {
2003                 this.launch();
2004             }
2005         },
2006         launch: function() {
2007             this.render();
2008         },
2009         show_recent_repository: function() {
2010             this.hide_header();
2011             this.viewbar_set_enabled(false);
2012             var repository_id = this.get_preference('recentrepository');
2013             this.viewmode = this.get_preference('recentviewmode');
2014             if (this.viewmode != 2 && this.viewmode != 3) {
2015                 this.viewmode = 1;
2016             }
2017             if (this.options.repositories[repository_id]) {
2018                 this.list({'repo_id':repository_id});
2019             }
2020         },
2021         get_preference: function (name) {
2022             if (this.options.userprefs[name]) {
2023                 return this.options.userprefs[name];
2024             } else {
2025                 return false;
2026             }
2027         },
2028         set_preference: function(name, value) {
2029             if (this.options.userprefs[name] != value) {
2030                 M.util.set_user_preference('filepicker_' + name, value);
2031                 this.options.userprefs[name] = value;
2032             }
2033         },
2034         in_iframe: function () {
2035             // If we're not the top window then we're in an iFrame
2036             return window.self !== window.top;
2037         }
2038     });
2039     var loading = Y.one('#filepicker-loading-'+options.client_id);
2040     if (loading) {
2041         loading.setStyle('display', 'none');
2042     }
2043     M.core_filepicker.instances[options.client_id] = new FilePickerHelper(options);
2044 };