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                     // Whether search results are currently displayed in the active repository in the filepicker.
 264                     // We do not want to load siblings of parent elements when displaying search tree results.
 265                     var isSearchResult = typeof options.callbackcontext.active_repo !== 'undefined' &&
 266                         options.callbackcontext.active_repo.issearchresult;
 267                     while (root && root.children && root.children.length) {
 268                         root = root.children[0];
 269                         if (root.path == mytreeel.path) {
 270                             root.origpath = options.filepath;
 271                             root.origlist = fileslist;
 272                         } else if (!root.isLeaf && root.expanded && !isSearchResult) {
 273                             Y.bind(options.treeview_dynload, options.callbackcontext)(root, null);
 274                         }
 275                     }
 276                 }
 277             } else {
 278                 // there is no path information, just display all elements as a list, without hierarchy
 279                 for(k in fileslist) {
 280                     build_tree(fileslist[k], scope.treeview.getRoot());
 281                 }
 282             }
 283             scope.treeview.subscribe('clickEvent', function(e){
 284                 e.node.highlight(false);
 285                 var callback = options.callback;
 286                 if (options.rightclickcallback && e.event.target &&
 287                         Y.Node(e.event.target).ancestor('.fp-treeview .fp-contextmenu', true)) {
 288                     callback = options.rightclickcallback;
 289                 }
 290                 Y.bind(callback, options.callbackcontext)(e, e.node.fileinfo);
 291                 Y.YUI2.util.Event.stopEvent(e.event)
 292             });
 293             // Simulate click on file not folder.
 294             scope.treeview.subscribe('enterKeyPressed', function(node) {
 295                 if (node.children.length === 0) {
 296                     Y.one(node.getContentEl()).one('a').simulate('click');
 297                 }
 298             });
 299             // TODO MDL-32736 support right click
 300             /*if (options.rightclickcallback) {
 301                 scope.treeview.subscribe('dblClickEvent', function(e){
 302                     e.node.highlight(false);
 303                     Y.bind(options.rightclickcallback, options.callbackcontext)(e, e.node.fileinfo);
 304                 });
 305             }*/
 306             scope.treeview.draw();
 307         };
 308         /** formatting function for table view */
 309         var formatValue = function (o){
 310             if (o.data[''+o.column.key+'_f_s']) {return o.data[''+o.column.key+'_f_s'];}
 311             else if (o.data[''+o.column.key+'_f']) {return o.data[''+o.column.key+'_f'];}
 312             else if (o.value) {return o.value;}
 313             else {return '';}
 314         };
 315         /** formatting function for table view */
 316         var formatTitle = function(o) {
 317             var el = Y.Node.create('<div/>');
 318             el.appendChild(options.filenode.cloneNode(true)); // TODO not node but string!
 319             el.get('children').addClass(o.data['classname']);
 320             el.one('.fp-filename').setContent(o.value);
 321             if (o.data['icon']) {
 322                 el.one('.fp-icon').appendChild(Y.Node.create('<img/>'));
 323                 el.one('.fp-icon img').setImgSrc(o.data['icon'], o.data['realicon'], lazyloading);
 324             }
 325             if (options.rightclickcallback) {
 326                 el.get('children').addClass('fp-hascontextmenu');
 327             }
 328             // TODO add tooltip with o.data['title'] (o.value) or o.data['thumbnail_title']
 329             return el.getContent();
 330         }
 331
 332         /**
 333          * Generate slave checkboxes based on toggleall's specification
 334          * @param {object} o An object reprsenting the record for the current row.
 335          * @return {html} The checkbox html
 336          */
 337         var formatCheckbox = function(o) {
 338             var el = Y.Node.create('<div/>');
 339
 340             var checkbox = Y.Node.create('<input/>')
 341                 .setAttribute('type', 'checkbox')
 342                 .setAttribute('data-fieldtype', 'checkbox')
 343                 .setAttribute('data-fullname', o.data.fullname)
 344                 .setAttribute('data-action', 'toggle')
 345                 .setAttribute('data-toggle', 'slave')
 346                 .setAttribute('data-togglegroup', 'file-selections')
 347                 .setAttribute('data-toggle-selectall', M.util.get_string('selectall', 'moodle'))
 348                 .setAttribute('data-toggle-deselectall', M.util.get_string('deselectall', 'moodle'));
 349
 350             var checkboxLabel = Y.Node.create('<label>')
 351                 .setHTML("Select file '" + o.data.fullname + "'")
 352                 .addClass('sr-only')
 353                 .setAttrs({
 354                     for: checkbox.generateID(),
 355                 });
 356
 357             el.appendChild(checkbox);
 358             el.appendChild(checkboxLabel);
 359             return el.getContent();
 360         };
 361         /** sorting function for table view */
 362         var sortFoldersFirst = function(a, b, desc) {
 363             if (a.get('isfolder') && !b.get('isfolder')) {
 364                 return -1;
 365             }
 366             if (!a.get('isfolder') && b.get('isfolder')) {
 367                 return 1;
 368             }
 369             var aa = a.get(this.key), bb = b.get(this.key), dir = desc ? -1 : 1;
 370             return (aa > bb) ? dir : ((aa < bb) ? -dir : 0);
 371         }
 372         /** initialize table view */
 373         var initialize_table_view = function() {
 374             var cols = [
 375                 {key: "displayname", label: M.util.get_string('name', 'moodle'), allowHTML: true, formatter: formatTitle,
 376                     sortable: true, sortFn: sortFoldersFirst},
 377                 {key: "datemodified", label: M.util.get_string('lastmodified', 'moodle'), allowHTML: true, formatter: formatValue,
 378                     sortable: true, sortFn: sortFoldersFirst},
 379                 {key: "size", label: M.util.get_string('size', 'repository'), allowHTML: true, formatter: formatValue,
 380                     sortable: true, sortFn: sortFoldersFirst},
 381                 {key: "mimetype", label: M.util.get_string('type', 'repository'), allowHTML: true,
 382                     sortable: true, sortFn: sortFoldersFirst}
 383             ];
 384
 385             // Generate a checkbox based on toggleall's specification
 386             var div = Y.Node.create('<div/>');
 387             var checkbox = Y.Node.create('<input/>')
 388                 .setAttribute('type', 'checkbox')
 389                 // .setAttribute('title', M.util.get_string('selectallornone', 'form'))
 390                 .setAttribute('data-action', 'toggle')
 391                 .setAttribute('data-toggle', 'master')
 392                 .setAttribute('data-togglegroup', 'file-selections');
 393
 394             var checkboxLabel = Y.Node.create('<label>')
 395                 .setHTML(M.util.get_string('selectallornone', 'form'))
 396                 .addClass('sr-only')
 397                 .setAttrs({
 398                     for: checkbox.generateID(),
 399                 });
 400
 401             div.appendChild(checkboxLabel);
 402             div.appendChild(checkbox);
 403
 404             // Define the selector for the click event handler.
 405             var clickEventSelector = 'tr';
 406             // Enable the selectable checkboxes
 407             if (options.disablecheckboxes != undefined && !options.disablecheckboxes) {
 408                 clickEventSelector = 'tr td:not(:first-child)';
 409                 cols.unshift({
 410                     key: "",
 411                     label: div.getContent(),
 412                     allowHTML: true,
 413                     formatter: formatCheckbox,
 414                     sortable: false
 415                 });
 416             }
 417             scope.tableview = new Y.DataTable({columns: cols, data: fileslist});
 418             scope.tableview.delegate('click', function (e, tableview) {
 419                 var record = tableview.getRecord(e.currentTarget.get('id'));
 420                 if (record) {
 421                     var callback = options.callback;
 422                     if (options.rightclickcallback && e.target.ancestor('.fp-tableview .fp-contextmenu', true)) {
 423                         callback = options.rightclickcallback;
 424                     }
 425                     Y.bind(callback, this)(e, record.getAttrs());
 426                 }
 427             }, clickEventSelector, options.callbackcontext, scope.tableview);
 428
 429             if (options.rightclickcallback) {
 430                 scope.tableview.delegate('contextmenu', function (e, tableview) {
 431                     var record = tableview.getRecord(e.currentTarget.get('id'));
 432                     if (record) { Y.bind(options.rightclickcallback, this)(e, record.getAttrs()); }
 433                 }, 'tr', options.callbackcontext, scope.tableview);
 434             }
 435         }
 436         /** append items in table view mode */
 437         var append_files_table = function() {
 438             if (options.appendonly) {
 439                 fileslist.forEach(function(el) {
 440                     this.tableview.data.add(el);
 441                 },scope);
 442             }
 443             scope.tableview.render(scope.one('.'+classname));
 444             scope.tableview.sortable = options.sortable ? true : false;
 445         };
 446         /** append items in tree view mode */
 447         var append_files_tree = function() {
 448             if (options.appendonly) {
 449                 var parentnode = scope.treeview.getRoot();
 450                 if (scope.treeview.getHighlightedNode()) {
 451                     parentnode = scope.treeview.getHighlightedNode();
 452                     if (parentnode.isLeaf) {parentnode = parentnode.parent;}
 453                 }
 454                 for (var k in fileslist) {
 455                     build_tree(fileslist[k], parentnode);
 456                 }
 457                 scope.treeview.draw();
 458             } else {
 459                 // otherwise files were already added in initialize_tree_view()
 460             }
 461         }
 462         /** append items in icon view mode */
 463         var append_files_icons = function() {
 464             parent = scope.one('.'+classname);
 465             for (var k in fileslist) {
 466                 var node = fileslist[k];
 467                 var element = options.filenode.cloneNode(true);
 468                 parent.appendChild(element);
 469                 element.addClass(options.classnamecallback(node));
 470                 var filenamediv = element.one('.fp-filename');
 471                 filenamediv.setContent(file_get_displayname(node));
 472                 var imgdiv = element.one('.fp-thumbnail'), width, height, src;
 473                 if (node.thumbnail) {
 474                     width = node.thumbnail_width ? node.thumbnail_width : 90;
 475                     height = node.thumbnail_height ? node.thumbnail_height : 90;
 476                     src = node.thumbnail;
 477                 } else {
 478                     width = 16;
 479                     height = 16;
 480                     src = node.icon;
 481                 }
 482                 filenamediv.setStyleAdv('width', width);
 483                 imgdiv.setStyleAdv('width', width).setStyleAdv('height', height);
 484                 var img = Y.Node.create('<img/>').setAttrs({
 485                         title: file_get_description(node),
 486                         alt: Y.Escape.html(node.thumbnail_alt ? node.thumbnail_alt : file_get_filename(node))}).
 487                     setStyle('maxWidth', ''+width+'px').
 488                     setStyle('maxHeight', ''+height+'px');
 489                 img.setImgSrc(src, node.realthumbnail, lazyloading);
 490                 imgdiv.appendChild(img);
 491                 element.on('click', function(e, nd) {
 492                     if (options.rightclickcallback && e.target.ancestor('.fp-iconview .fp-contextmenu', true)) {
 493                         Y.bind(options.rightclickcallback, this)(e, nd);
 494                     } else {
 495                         Y.bind(options.callback, this)(e, nd);
 496                     }
 497                 }, options.callbackcontext, node);
 498                 if (options.rightclickcallback) {
 499                     element.on('contextmenu', options.rightclickcallback, options.callbackcontext, node);
 500                 }
 501             }
 502         }
 503
 504         // Notify the user if any of the files has a problem status.
 505         var problemFiles = [];
 506         fileslist.forEach(function(file) {
 507             if (!file_is_folder(file) && file.hasOwnProperty('status') && file.status != 0) {
 508                 problemFiles.push(file);
 509             }
 510         });
 511         if (problemFiles.length > 0) {
 512             require(["core/notification", "core/str"], function(Notification, Str) {
 513                 problemFiles.forEach(function(problemFile) {
 514                     Str.get_string('storedfilecannotreadfile', 'error', problemFile.fullname).then(function(string) {
 515                         Notification.addNotification({
 516                             message: string,
 517                             type: "error"
 518                         });
 519                         return;
 520                     }).catch(Notification.exception);
 521                 });
 522             });
 523         }
 524
 525         // If table view, need some additional properties
 526         // before passing fileslist to the YUI tableview
 527         if (options.viewmode == 3) {
 528             fileslist.forEach(function(el) {
 529                 el.displayname = file_get_displayname(el);
 530                 el.isfolder = file_is_folder(el);
 531                 el.classname = options.classnamecallback(el);
 532             }, scope);
 533         }
 534
 535         // initialize files view
 536         if (!options.appendonly) {
 537             var parent = Y.Node.create('<div/>').addClass(classname);
 538             this.setContent('').appendChild(parent);
 539             parent.generateID();
 540             if (options.viewmode == 2) {
 541                 initialize_tree_view();
 542             } else if (options.viewmode == 3) {
 543                 initialize_table_view();
 544             } else {
 545                 // nothing to initialize for icon view
 546             }
 547         }
 548
 549         // append files to the list
 550         if (options.viewmode == 2) {
 551             append_files_tree();
 552         } else if (options.viewmode == 3) {
 553             append_files_table();
 554         } else {
 555             append_files_icons();
 556         }
 557
 558     }
 559 }, '@VERSION@', {
 560     requires:['base', 'node', 'yui2-treeview', 'panel', 'cookie', 'datatable', 'datatable-sort']
 561 });
 562
 563 M.core_filepicker = M.core_filepicker || {};
 564
 565 /**
 566  * instances of file pickers used on page
 567  */
 568 M.core_filepicker.instances = M.core_filepicker.instances || {};
 569 M.core_filepicker.active_filepicker = null;
 570
 571 /**
 572  * HTML Templates to use in FilePicker
 573  */
 574 M.core_filepicker.templates = M.core_filepicker.templates || {};
 575
 576 /**
 577  * Array of image sources for real previews (realicon or realthumbnail) that are already loaded
 578  */
 579 M.core_filepicker.loadedpreviews = M.core_filepicker.loadedpreviews || {};
 580
 581 /**
 582 * Set selected file info
 583 *
 584 * @param object file info
 585 */
 586 M.core_filepicker.select_file = function(file) {
 587     M.core_filepicker.active_filepicker.select_file(file);
 588 }
 589
 590 /**
 591  * Init and show file picker
 592  */
 593 M.core_filepicker.show = function(Y, options) {
 594     if (!M.core_filepicker.instances[options.client_id]) {
 595         M.core_filepicker.init(Y, options);
 596     }
 597     M.core_filepicker.instances[options.client_id].options.formcallback = options.formcallback;
 598     M.core_filepicker.instances[options.client_id].show();
 599 };
 600
 601 M.core_filepicker.set_templates = function(Y, templates) {
 602     for (var templid in templates) {
 603         M.core_filepicker.templates[templid] = templates[templid];
 604     }
 605 }
 606
 607 /**
 608  * Add new file picker to current instances
 609  */
 610 M.core_filepicker.init = function(Y, options) {
 611     var FilePickerHelper = function(options) {
 612         FilePickerHelper.superclass.constructor.apply(this, arguments);
 613     };
 614
 615     FilePickerHelper.NAME = "FilePickerHelper";
 616     FilePickerHelper.ATTRS = {
 617         options: {},
 618         lang: {}
 619     };
 620
 621     Y.extend(FilePickerHelper, Y.Base, {
 622         api: M.cfg.wwwroot+'/repository/repository_ajax.php',
 623         cached_responses: {},
 624         waitinterval : null, // When the loading template is being displayed and its animation is running this will be an interval instance.
 625         initializer: function(options) {
 626             this.options = options;
 627             if (!this.options.savepath) {
 628                 this.options.savepath = '/';
 629             }
 630         },
 631
 632         destructor: function() {
 633         },
 634
 635         request: function(args, redraw) {
 636             var api = (args.api ? args.api : this.api) + '?action='+args.action;
 637             var params = {};
 638             var scope = args['scope'] ? args['scope'] : this;
 639             params['repo_id']=args.repository_id;
 640             params['p'] = args.path?args.path:'';
 641             params['page'] = args.page?args.page:'';
 642             params['env']=this.options.env;
 643             // the form element only accept certain file types
 644             params['accepted_types']=this.options.accepted_types;
 645             params['sesskey'] = M.cfg.sesskey;
 646             params['client_id'] = args.client_id;
 647             params['itemid'] = this.options.itemid?this.options.itemid:0;
 648             params['maxbytes'] = this.options.maxbytes?this.options.maxbytes:-1;
 649             // The unlimited value of areamaxbytes is -1, it is defined by FILE_AREA_MAX_BYTES_UNLIMITED.
 650             params['areamaxbytes'] = this.options.areamaxbytes ? this.options.areamaxbytes : -1;
 651             if (this.options.context && this.options.context.id) {
 652                 params['ctx_id'] = this.options.context.id;
 653             }
 654             if (args['params']) {
 655                 for (i in args['params']) {
 656                     params[i] = args['params'][i];
 657                 }
 658             }
 659             if (args.action == 'upload') {
 660                 var list = [];
 661                 for(var k in params) {
 662                     var value = params[k];
 663                     if(value instanceof Array) {
 664                         for(var i in value) {
 665                             list.push(k+'[]='+value[i]);
 666                         }
 667                     } else {
 668                         list.push(k+'='+value);
 669                     }
 670                 }
 671                 params = list.join('&');
 672             } else {
 673                 params = build_querystring(params);
 674             }
 675             var cfg = {
 676                 method: 'POST',
 677                 on: {
 678                     complete: function(id,o,p) {
 679                         var data = null;
 680                         try {
 681                             data = Y.JSON.parse(o.responseText);
 682                         } catch(e) {
 683                             if (o && o.status && o.status > 0) {
 684                                 Y.use('moodle-core-notification-exception', function() {
 685                                     return new M.core.exception(e);
 686                                 });
 687                                 return;
 688                             }
 689                         }
 690                         // error checking
 691                         if (data && data.error) {
 692                             Y.use('moodle-core-notification-ajaxexception', function () {
 693                                 return new M.core.ajaxException(data);
 694                             });
 695                             this.fpnode.one('.fp-content').setContent('');
 696                             return;
 697                         } else {
 698                             if (data.msg) {
 699                                 scope.print_msg(data.msg, 'info');
 700                             }
 701                             // cache result if applicable
 702                             if (args.action != 'upload' && data.allowcaching) {
 703                                 scope.cached_responses[params] = data;
 704                             }
 705                             // invoke callback
 706                             args.callback(id,data,p);
 707                         }
 708                     }
 709                 },
 710                 arguments: {
 711                     scope: scope
 712                 },
 713                 headers: {
 714                     'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
 715                 },
 716                 data: params,
 717                 context: this
 718             };
 719             if (args.form) {
 720                 cfg.form = args.form;
 721             }
 722             // check if result of the same request has been already cached. If not, request it
 723             // (never applicable in case of form submission and/or upload action):
 724             if (!args.form && args.action != 'upload' && scope.cached_responses[params]) {
 725                 args.callback(null, scope.cached_responses[params], {scope: scope})
 726             } else {
 727                 Y.io(api, cfg);
 728                 if (redraw) {
 729                     this.wait();
 730                 }
 731             }
 732         },
 733         /** displays the dialog and processes rename/overwrite if there is a file with the same name in the same filearea*/
 734         process_existing_file: function(data) {
 735             var scope = this;
 736             var handleOverwrite = function(e) {
 737                 // overwrite
 738                 e.preventDefault();
 739                 var data = this.process_dlg.dialogdata;
 740                 var params = {}
 741                 params['existingfilename'] = data.existingfile.filename;
 742                 params['existingfilepath'] = data.existingfile.filepath;
 743                 params['newfilename'] = data.newfile.filename;
 744                 params['newfilepath'] = data.newfile.filepath;
 745                 this.hide_header();
 746                 this.request({
 747                     'params': params,
 748                     'scope': this,
 749                     'action':'overwrite',
 750                     'path': '',
 751                     'client_id': this.options.client_id,
 752                     'repository_id': this.active_repo.id,
 753                     'callback': function(id, o, args) {
 754                         scope.hide();
 755                         // Add an arbitrary parameter to the URL to force browsers to re-load the new image even
 756                         // if the file name has not changed.
 757                         var urlimage = data.existingfile.url + "?time=" + (new Date()).getTime();
 758                         if (scope.options.editor_target && scope.options.env == 'editor') {
 759                             // editor needs to update url
 760                             scope.options.editor_target.value = urlimage;
 761                             scope.options.editor_target.dispatchEvent(new Event('change'), {'bubbles': true});
 762                         }
 763                         var fileinfo = {'client_id':scope.options.client_id,
 764                             'url': urlimage,
 765                             'file': data.existingfile.filename};
 766                         var formcallback_scope = scope.options.magicscope ? scope.options.magicscope : scope;
 767                         scope.options.formcallback.apply(formcallback_scope, [fileinfo]);
 768                     }
 769                 }, true);
 770             }
 771             var handleRename = function(e) {
 772                 // inserts file with the new name
 773                 e.preventDefault();
 774                 var scope = this;
 775                 var data = this.process_dlg.dialogdata;
 776                 if (scope.options.editor_target && scope.options.env == 'editor') {
 777                     scope.options.editor_target.value = data.newfile.url;
 778                     scope.options.editor_target.dispatchEvent(new Event('change'), {'bubbles': true});
 779                 }
 780                 scope.hide();
 781                 var formcallback_scope = scope.options.magicscope ? scope.options.magicscope : scope;
 782                 var fileinfo = {'client_id':scope.options.client_id,
 783                                 'url':data.newfile.url,
 784                                 'file':data.newfile.filename};
 785                 scope.options.formcallback.apply(formcallback_scope, [fileinfo]);
 786             }
 787             var handleCancel = function(e) {
 788                 // Delete tmp file
 789                 e.preventDefault();
 790                 var params = {};
 791                 params['newfilename'] = this.process_dlg.dialogdata.newfile.filename;
 792                 params['newfilepath'] = this.process_dlg.dialogdata.newfile.filepath;
 793                 this.request({
 794                     'params': params,
 795                     'scope': this,
 796                     'action':'deletetmpfile',
 797                     'path': '',
 798                     'client_id': this.options.client_id,
 799                     'repository_id': this.active_repo.id,
 800                     'callback': function(id, o, args) {
 801                         // let it be in background, from user point of view nothing is happenning
 802                     }
 803                 }, false);
 804                 this.process_dlg.hide();
 805                 this.selectui.hide();
 806             }
 807             if (!this.process_dlg) {
 808                 this.process_dlg_node = Y.Node.create(M.core_filepicker.templates.processexistingfile);
 809                 var node = this.process_dlg_node;
 810                 node.generateID();
 811                 this.process_dlg = new M.core.dialogue({
 812                     draggable    : true,
 813                     bodyContent  : node,
 814                     headerContent: M.util.get_string('fileexistsdialogheader', 'repository'),
 815                     centered     : true,
 816                     modal        : true,
 817                     visible      : false,
 818                     zIndex       : this.options.zIndex
 819                 });
 820                 node.one('.fp-dlg-butoverwrite').on('click', handleOverwrite, this);
 821                 node.one('.fp-dlg-butrename').on('click', handleRename, this);
 822                 node.one('.fp-dlg-butcancel').on('click', handleCancel, this);
 823                 if (this.options.env == 'editor') {
 824                     node.one('.fp-dlg-text').setContent(M.util.get_string('fileexistsdialog_editor', 'repository'));
 825                 } else {
 826                     node.one('.fp-dlg-text').setContent(M.util.get_string('fileexistsdialog_filemanager', 'repository'));
 827                 }
 828             }
 829             this.selectnode.removeClass('loading');
 830             this.process_dlg.dialogdata = data;
 831             this.process_dlg_node.one('.fp-dlg-butrename').setContent(M.util.get_string('renameto', 'repository', data.newfile.filename));
 832             this.process_dlg.show();
 833         },
 834         /** displays error instead of filepicker contents */
 835         display_error: function(errortext, errorcode) {
 836             this.fpnode.one('.fp-content').setContent(M.core_filepicker.templates.error);
 837             this.fpnode.one('.fp-content .fp-error').
 838                 addClass(errorcode).
 839                 setContent(Y.Escape.html(errortext));
 840         },
 841         /** displays message in a popup */
 842         print_msg: function(msg, type) {
 843             var header = M.util.get_string('error', 'moodle');
 844             if (type != 'error') {
 845                 type = 'info'; // one of only two types excepted
 846                 header = M.util.get_string('info', 'moodle');
 847             }
 848             if (!this.msg_dlg) {
 849                 this.msg_dlg_node = Y.Node.create(M.core_filepicker.templates.message);
 850                 this.msg_dlg_node.generateID();
 851
 852                 this.msg_dlg = new M.core.dialogue({
 853                     draggable    : true,
 854                     bodyContent  : this.msg_dlg_node,
 855                     centered     : true,
 856                     modal        : true,
 857                     visible      : false,
 858                     zIndex       : this.options.zIndex
 859                 });
 860                 this.msg_dlg_node.one('.fp-msg-butok').on('click', function(e) {
 861                     e.preventDefault();
 862                     this.msg_dlg.hide();
 863                 }, this);
 864             }
 865
 866             this.msg_dlg.set('headerContent', header);
 867             this.msg_dlg_node.removeClass('fp-msg-info').removeClass('fp-msg-error').addClass('fp-msg-'+type)
 868             this.msg_dlg_node.one('.fp-msg-text').setContent(Y.Escape.html(msg));
 869             this.msg_dlg.show();
 870         },
 871         view_files: function(appenditems) {
 872             this.viewbar_set_enabled(true);
 873             this.print_path();
 874             /*if ((appenditems == null) && (!this.filelist || !this.filelist.length) && !this.active_repo.hasmorepages) {
 875              // TODO do it via classes and adjust for each view mode!
 876                 // If there are no items and no next page, just display status message and quit
 877                 this.display_error(M.util.get_string('nofilesavailable', 'repository'), 'nofilesavailable');
 878                 return;
 879             }*/
 880             if (this.viewmode == 2) {
 881                 this.view_as_list(appenditems);
 882             } else if (this.viewmode == 3) {
 883                 this.view_as_table(appenditems);
 884             } else {
 885                 this.view_as_icons(appenditems);
 886             }
 887             this.fpnode.one('.fp-content').setAttribute('tabindex', '0');
 888             this.fpnode.one('.fp-content').focus();
 889             // display/hide the link for requesting next page
 890             if (!appenditems && this.active_repo.hasmorepages) {
 891                 if (!this.fpnode.one('.fp-content .fp-nextpage')) {
 892                     this.fpnode.one('.fp-content').append(M.core_filepicker.templates.nextpage);
 893                 }
 894                 this.fpnode.one('.fp-content .fp-nextpage').one('a,button').on('click', function(e) {
 895                     e.preventDefault();
 896                     this.fpnode.one('.fp-content .fp-nextpage').addClass('loading');
 897                     this.request_next_page();
 898                 }, this);
 899             }
 900             if (!this.active_repo.hasmorepages && this.fpnode.one('.fp-content .fp-nextpage')) {
 901                 this.fpnode.one('.fp-content .fp-nextpage').remove();
 902             }
 903             if (this.fpnode.one('.fp-content .fp-nextpage')) {
 904                 this.fpnode.one('.fp-content .fp-nextpage').removeClass('loading');
 905             }
 906             this.content_scrolled();
 907         },
 908         content_scrolled: function(e) {
 909             setTimeout(Y.bind(function() {
 910                 if (this.processingimages) {
 911                     return;
 912                 }
 913                 this.processingimages = true;
 914                 var scope = this,
 915                     fpcontent = this.fpnode.one('.fp-content'),
 916                     fpcontenty = fpcontent.getY(),
 917                     fpcontentheight = fpcontent.getStylePx('height'),
 918                     nextpage = fpcontent.one('.fp-nextpage'),
 919                     is_node_visible = function(node) {
 920                         var offset = node.getY()-fpcontenty;
 921                         if (offset <= fpcontentheight && (offset >=0 || offset+node.getStylePx('height')>=0)) {
 922                             return true;
 923                         }
 924                         return false;
 925                     };
 926                 // automatically load next page when 'more' link becomes visible
 927                 if (nextpage && !nextpage.hasClass('loading') && is_node_visible(nextpage)) {
 928                     nextpage.one('a,button').simulate('click');
 929                 }
 930                 // replace src for visible images that need to be lazy-loaded
 931                 if (scope.lazyloading) {
 932                     fpcontent.all('img').each( function(node) {
 933                         if (node.get('id') && scope.lazyloading[node.get('id')] && is_node_visible(node)) {
 934                             node.setImgRealSrc(scope.lazyloading);
 935                         }
 936                     });
 937                 }
 938                 this.processingimages = false;
 939             }, this), 200)
 940         },
 941         treeview_dynload: function(node, cb) {
 942             var retrieved_children = {};
 943             if (node.children) {
 944                 for (var i in node.children) {
 945                     retrieved_children[node.children[i].path] = node.children[i];
 946                 }
 947             }
 948             this.request({
 949                 action:'list',
 950                 client_id: this.options.client_id,
 951                 repository_id: this.active_repo.id,
 952                 path:node.path?node.path:'',
 953                 page:node.page?args.page:'',
 954                 scope:this,
 955                 callback: function(id, obj, args) {
 956                     var list = obj.list;
 957                     var scope = args.scope;
 958                     // check that user did not leave the view mode before recieving this response
 959                     if (!(scope.active_repo.id == obj.repo_id && scope.viewmode == 2 && node && node.getChildrenEl())) {
 960                         return;
 961                     }
 962                     if (cb != null) { // (in manual mode do not update current path)
 963                         scope.viewbar_set_enabled(true);
 964                         scope.parse_repository_options(obj);
 965                     }
 966                     node.highlight(false);
 967                     node.origlist = obj.list ? obj.list : null;
 968                     node.origpath = obj.path ? obj.path : null;
 969                     node.children = [];
 970                     for(k in list) {
 971                         if (list[k].children && retrieved_children[list[k].path]) {
 972                             // if this child is a folder and has already been retrieved
 973                             node.children[node.children.length] = retrieved_children[list[k].path];
 974                         } else {
 975                             // append new file to the list
 976                             scope.view_as_list([list[k]]);
 977                         }
 978                     }
 979                     if (cb == null) {
 980                         node.refresh();
 981                     } else {
 982                         // invoke callback requested by TreeView component
 983                         cb();
 984                     }
 985                     scope.content_scrolled();
 986                 }
 987             }, false);
 988         },
 989        classnamecallback : function(node) {
 990             var classname = '';
 991             if (node.children) {
 992                 classname = classname + ' fp-folder';
 993             }
 994             if (node.isref) {
 995                 classname = classname + ' fp-isreference';
 996             }
 997             if (node.iscontrolledlink) {
 998                 classname = classname + ' fp-iscontrolledlink';
 999             }
1000             if (node.refcount) {
1001                 classname = classname + ' fp-hasreferences';
1002             }
1003             if (node.originalmissing) {
1004                 classname = classname + ' fp-originalmissing';
1005             }
1006             return Y.Lang.trim(classname);
1007         },
1008         /** displays list of files in tree (list) view mode. If param appenditems is specified,
1009          * appends those items to the end of the list. Otherwise (default behaviour)
1010          * clears the contents and displays the items from this.filelist */
1011         view_as_list: function(appenditems) {
1012             var list = (appenditems != null) ? appenditems : this.filelist;
1013             this.viewmode = 2;
1014             if (!this.filelist || this.filelist.length==0 && (!this.filepath || !this.filepath.length)) {
1015                 this.display_error(M.util.get_string('nofilesavailable', 'repository'), 'nofilesavailable');
1016                 return;
1017             }
1018
1019             var element_template = Y.Node.create(M.core_filepicker.templates.listfilename);
1020             var options = {
1021                 viewmode : this.viewmode,
1022                 appendonly : (appenditems != null),
1023                 filenode : element_template,
1024                 callbackcontext : this,
1025                 callback : function(e, node) {
1026                     // TODO MDL-32736 e is not an event here but an object with properties 'event' and 'node'
1027                     if (!node.children) {
1028                         if (e.node.parent && e.node.parent.origpath) {
1029                             // set the current path
1030                             this.filepath = e.node.parent.origpath;
1031                             this.filelist = e.node.parent.origlist;
1032                             this.print_path();
1033                         }
1034                         this.select_file(node);
1035                     } else {
1036                         // save current path and filelist (in case we want to jump to other viewmode)
1037                         this.filepath = e.node.origpath;
1038                         this.filelist = e.node.origlist;
1039                         this.currentpath = e.node.path;
1040                         this.print_path();
1041                         this.content_scrolled();
1042                     }
1043                 },
1044                 classnamecallback : this.classnamecallback,
1045                 dynload : this.active_repo.dynload,
1046                 filepath : this.filepath,
1047                 treeview_dynload : this.treeview_dynload
1048             };
1049             this.fpnode.one('.fp-content').fp_display_filelist(options, list, this.lazyloading);
1050         },
1051         /** displays list of files in icon view mode. If param appenditems is specified,
1052          * appends those items to the end of the list. Otherwise (default behaviour)
1053          * clears the contents and displays the items from this.filelist */
1054         view_as_icons: function(appenditems) {
1055             this.viewmode = 1;
1056             var list = (appenditems != null) ? appenditems : this.filelist;
1057             var element_template = Y.Node.create(M.core_filepicker.templates.iconfilename);
1058             if ((appenditems == null) && (!this.filelist || !this.filelist.length)) {
1059                 this.display_error(M.util.get_string('nofilesavailable', 'repository'), 'nofilesavailable');
1060                 return;
1061             }
1062             var options = {
1063                 viewmode : this.viewmode,
1064                 appendonly : (appenditems != null),
1065                 filenode : element_template,
1066                 callbackcontext : this,
1067                 callback : function(e, node) {
1068                     if (e.preventDefault) {
1069                         e.preventDefault();
1070                     }
1071                     if(node.children) {
1072                         if (this.active_repo.dynload) {
1073                             this.list({'path':node.path});
1074                         } else {
1075                             this.filelist = node.children;
1076                             this.view_files();
1077                         }
1078                     } else {
1079                         this.select_file(node);
1080                     }
1081                 },
1082                 classnamecallback : this.classnamecallback
1083             };
1084             this.fpnode.one('.fp-content').fp_display_filelist(options, list, this.lazyloading);
1085         },
1086         /** displays list of files in table view mode. If param appenditems is specified,
1087          * appends those items to the end of the list. Otherwise (default behaviour)
1088          * clears the contents and displays the items from this.filelist */
1089         view_as_table: function(appenditems) {
1090             this.viewmode = 3;
1091             var list = (appenditems != null) ? appenditems : this.filelist;
1092             if (!appenditems && (!this.filelist || this.filelist.length==0) && !this.active_repo.hasmorepages) {
1093                 this.display_error(M.util.get_string('nofilesavailable', 'repository'), 'nofilesavailable');
1094                 return;
1095             }
1096             var element_template = Y.Node.create(M.core_filepicker.templates.listfilename);
1097             var options = {
1098                 viewmode : this.viewmode,
1099                 appendonly : (appenditems != null),
1100                 filenode : element_template,
1101                 callbackcontext : this,
1102                 sortable : !this.active_repo.hasmorepages,
1103                 callback : function(e, node) {
1104                     if (e.preventDefault) {e.preventDefault();}
1105                     if (node.children) {
1106                         if (this.active_repo.dynload) {
1107                             this.list({'path':node.path});
1108                         } else {
1109                             this.filelist = node.children;
1110                             this.view_files();
1111                         }
1112                     } else {
1113                         this.select_file(node);
1114                     }
1115                 },
1116                 classnamecallback : this.classnamecallback
1117             };
1118             this.fpnode.one('.fp-content').fp_display_filelist(options, list, this.lazyloading);
1119         },
1120         /** If more than one page available, requests and displays the files from the next page */
1121         request_next_page: function() {
1122             if (!this.active_repo.hasmorepages || this.active_repo.nextpagerequested) {
1123                 // nothing to load
1124                 return;
1125             }
1126             this.active_repo.nextpagerequested = true;
1127             var nextpage = this.active_repo.page+1;
1128             var args = {
1129                 page: nextpage,
1130                 repo_id: this.active_repo.id
1131             };
1132             var action = this.active_repo.issearchresult ? 'search' : 'list';
1133             this.request({
1134                 path: this.currentpath,
1135                 scope: this,
1136                 action: action,
1137                 client_id: this.options.client_id,
1138                 repository_id: args.repo_id,
1139                 params: args,
1140                 callback: function(id, obj, args) {
1141                     var scope = args.scope;
1142                     // Check that we are still in the same repository and are expecting this page. We have no way
1143                     // to compare the requested page and the one returned, so we assume that if the last chunk
1144                     // of the breadcrumb is similar, then we probably are on the same page.
1145                     var samepage = true;
1146                     if (obj.path && scope.filepath) {
1147                         var pathbefore = scope.filepath[scope.filepath.length-1];
1148                         var pathafter = obj.path[obj.path.length-1];
1149                         if (pathbefore.path != pathafter.path) {
1150                             samepage = false;
1151                         }
1152                     }
1153                     if (scope.active_repo.hasmorepages && obj.list && obj.page &&
1154                             obj.repo_id == scope.active_repo.id &&
1155                             obj.page == scope.active_repo.page+1 && samepage) {
1156                         scope.parse_repository_options(obj, true);
1157                         scope.view_files(obj.list)
1158                     }
1159                 }
1160             }, false);
1161         },
1162         select_file: function(args) {
1163             var argstitle = args.shorttitle ? args.shorttitle : args.title;
1164             // Limit the string length so it fits nicely on mobile devices
1165             var titlelength = 30;
1166             if (argstitle.length > titlelength) {
1167                 argstitle = argstitle.substring(0, titlelength) + '...';
1168             }
1169             Y.one('#fp-file_label_'+this.options.client_id).setContent(Y.Escape.html(M.util.get_string('select', 'repository')+' '+argstitle));
1170             this.selectui.show();
1171             Y.one('#'+this.selectnode.get('id')).focus();
1172             var client_id = this.options.client_id;
1173             var selectnode = this.selectnode;
1174             var return_types = this.options.repositories[this.active_repo.id].return_types;
1175             selectnode.removeClass('loading');
1176             selectnode.one('.fp-saveas input').set('value', args.title);
1177
1178             var imgnode = Y.Node.create('<img/>').
1179                 set('src', args.realthumbnail ? args.realthumbnail : args.thumbnail).
1180                 setStyle('maxHeight', ''+(args.thumbnail_height ? args.thumbnail_height : 90)+'px').
1181                 setStyle('maxWidth', ''+(args.thumbnail_width ? args.thumbnail_width : 90)+'px');
1182             selectnode.one('.fp-thumbnail').setContent('').appendChild(imgnode);
1183
1184             // filelink is the array of file-link-types available for this repository in this env
1185             var filelinktypes = [2/*FILE_INTERNAL*/,1/*FILE_EXTERNAL*/,4/*FILE_REFERENCE*/,8/*FILE_CONTROLLED_LINK*/];
1186             var filelink = {}, firstfilelink = null, filelinkcount = 0;
1187             for (var i in filelinktypes) {
1188                 var allowed = (return_types & filelinktypes[i]) &&
1189                     (this.options.return_types & filelinktypes[i]);
1190                 if (filelinktypes[i] == 1/*FILE_EXTERNAL*/ && !this.options.externallink && this.options.env == 'editor') {
1191                     // special configuration setting 'repositoryallowexternallinks' may prevent
1192                     // using external links in editor environment
1193                     allowed = false;
1194                 }
1195                 filelink[filelinktypes[i]] = allowed;
1196                 firstfilelink = (firstfilelink==null && allowed) ? filelinktypes[i] : firstfilelink;
1197                 filelinkcount += allowed ? 1 : 0;
1198             }
1199             var defaultreturntype = this.options.repositories[this.active_repo.id].defaultreturntype;
1200             if (defaultreturntype) {
1201                 if (filelink[defaultreturntype]) {
1202                     firstfilelink = defaultreturntype;
1203                 }
1204             }
1205             // make radio buttons enabled if this file-link-type is available and only if there are more than one file-link-type option
1206             // check the first available file-link-type option
1207             for (var linktype in filelink) {
1208                 var el = selectnode.one('.fp-linktype-'+linktype);
1209                 el.addClassIf('uneditable', !(filelink[linktype] && filelinkcount>1));
1210                 el.one('input').set('checked', (firstfilelink == linktype) ? 'checked' : '').simulate('change');
1211             }
1212
1213             // TODO MDL-32532: attributes 'hasauthor' and 'haslicense' need to be obsolete,
1214             selectnode.one('.fp-setauthor input').set('value', args.author ? args.author : this.options.author);
1215             this.populateLicensesSelect(selectnode.one('.fp-setlicense select'), args);
1216             selectnode.one('form #filesource-'+client_id).set('value', args.source);
1217             selectnode.one('form #filesourcekey-'+client_id).set('value', args.sourcekey);
1218
1219             // display static information about a file (when known)
1220             var attrs = ['datemodified','datecreated','size','license','author','dimensions'];
1221             for (var i in attrs) {
1222                 if (selectnode.one('.fp-'+attrs[i])) {
1223                     var value = (args[attrs[i]+'_f']) ? args[attrs[i]+'_f'] : (args[attrs[i]] ? args[attrs[i]] : '');
1224                     selectnode.one('.fp-'+attrs[i]).addClassIf('fp-unknown', ''+value == '')
1225                         .one('.fp-value').setContent(Y.Escape.html(value));
1226                 }
1227             }
1228         },
1229         setup_select_file: function() {
1230             var client_id = this.options.client_id;
1231             var selectnode = this.selectnode;
1232             var getfile = selectnode.one('.fp-select-confirm');
1233             var filePickerHelper = this;
1234             // bind labels with corresponding inputs
1235             selectnode.all('.fp-saveas,.fp-linktype-2,.fp-linktype-1,.fp-linktype-4,fp-linktype-8,.fp-setauthor,.fp-setlicense').each(function (node) {
1236                 node.all('label').set('for', node.one('input,select').generateID());
1237             });
1238             selectnode.one('.fp-linktype-2 input').setAttrs({value: 2, name: 'linktype'});
1239             selectnode.one('.fp-linktype-1 input').setAttrs({value: 1, name: 'linktype'});
1240             selectnode.one('.fp-linktype-4 input').setAttrs({value: 4, name: 'linktype'});
1241             selectnode.one('.fp-linktype-8 input').setAttrs({value: 8, name: 'linktype'});
1242             var changelinktype = function(e) {
1243                 if (e.currentTarget.get('checked')) {
1244                     var allowinputs = e.currentTarget.get('value') != 1/*FILE_EXTERNAL*/;
1245                     selectnode.all('.fp-setauthor,.fp-setlicense,.fp-saveas').each(function(node){
1246                         node.addClassIf('uneditable', !allowinputs);
1247                         node.all('input,select').set('disabled', allowinputs?'':'disabled');
1248                     });
1249
1250                     // If the link to the file is selected, only then.
1251                     // Remember: this is not to be done for all repos.
1252                     // Only for those repos where the filereferencewarning is set.
1253                     // The value 4 represents FILE_REFERENCE here.
1254                     if (e.currentTarget.get('value') === '4') {
1255                         var filereferencewarning = filePickerHelper.active_repo.filereferencewarning;
1256                         if (filereferencewarning) {
1257                             var fileReferenceNode = e.currentTarget.ancestor('.fp-linktype-4');
1258                             var fileReferenceWarningNode = Y.Node.create('<div/>').
1259                                 addClass('alert alert-warning px-3 py-1 my-1 small').
1260                                 setAttrs({role: 'alert'}).
1261                                 setContent(filereferencewarning);
1262                             fileReferenceNode.append(fileReferenceWarningNode);
1263                         }
1264                     } else {
1265                         var fileReferenceInput = selectnode.one('.fp-linktype-4 input');
1266                         var fileReferenceWarningNode = fileReferenceInput.ancestor('.fp-linktype-4').one('.alert-warning');
1267                         if (fileReferenceWarningNode) {
1268                             fileReferenceWarningNode.remove();
1269                         }
1270                     }
1271                 }
1272             };
1273             selectnode.all('.fp-linktype-2,.fp-linktype-1,.fp-linktype-4,.fp-linktype-8').each(function (node) {
1274                 node.one('input').on('change', changelinktype, this);
1275             });
1276             // register event on clicking submit button
1277             getfile.on('click', function(e) {
1278                 e.preventDefault();
1279                 var client_id = this.options.client_id;
1280                 var scope = this;
1281                 var repository_id = this.active_repo.id;
1282                 var title = selectnode.one('.fp-saveas input').get('value');
1283                 var filesource = selectnode.one('form #filesource-'+client_id).get('value');
1284                 var filesourcekey = selectnode.one('form #filesourcekey-'+client_id).get('value');
1285                 var params = {'title':title, 'source':filesource, 'savepath': this.options.savepath, sourcekey: filesourcekey};
1286                 var license = selectnode.one('.fp-setlicense select');
1287                 if (license) {
1288                     params['license'] = license.get('value');
1289                     var origlicense = selectnode.one('.fp-license .fp-value');
1290                     if (origlicense) {
1291                         origlicense = origlicense.getContent();
1292                     }
1293                     if (this.options.rememberuserlicensepref) {
1294                         this.set_preference('recentlicense', license.get('value'));
1295                     }
1296                 }
1297                 params['author'] = selectnode.one('.fp-setauthor input').get('value');
1298
1299                 var return_types = this.options.repositories[this.active_repo.id].return_types;
1300                 if (this.options.env == 'editor') {
1301                     // in editor, images are stored in '/' only
1302                     params.savepath = '/';
1303                 }
1304                 if ((this.options.externallink || this.options.env != 'editor') &&
1305                             (return_types & 1/*FILE_EXTERNAL*/) &&
1306                             (this.options.return_types & 1/*FILE_EXTERNAL*/) &&
1307                             selectnode.one('.fp-linktype-1 input').get('checked')) {
1308                     params['linkexternal'] = 'yes';
1309                 } else if ((return_types & 4/*FILE_REFERENCE*/) &&
1310                         (this.options.return_types & 4/*FILE_REFERENCE*/) &&
1311                         selectnode.one('.fp-linktype-4 input').get('checked')) {
1312                     params['usefilereference'] = '1';
1313                 } else if ((return_types & 8/*FILE_CONTROLLED_LINK*/) &&
1314                         (this.options.return_types & 8/*FILE_CONTROLLED_LINK*/) &&
1315                         selectnode.one('.fp-linktype-8 input').get('checked')) {
1316                     params['usecontrolledlink'] = '1';
1317                 }
1318
1319                 selectnode.addClass('loading');
1320                 this.request({
1321                     action:'download',
1322                     client_id: client_id,
1323                     repository_id: repository_id,
1324                     'params': params,
1325                     onerror: function(id, obj, args) {
1326                         selectnode.removeClass('loading');
1327                         scope.selectui.hide();
1328                     },
1329                     callback: function(id, obj, args) {
1330                         selectnode.removeClass('loading');
1331                         if (obj.event == 'fileexists') {
1332                             scope.process_existing_file(obj);
1333                             return;
1334                         }
1335                         if (scope.options.editor_target && scope.options.env=='editor') {
1336                             scope.options.editor_target.value=obj.url;
1337                             scope.options.editor_target.dispatchEvent(new Event('change'), {'bubbles': true});
1338                         }
1339                         scope.hide();
1340                         obj.client_id = client_id;
1341                         var formcallback_scope = args.scope.options.magicscope ? args.scope.options.magicscope : args.scope;
1342                         scope.options.formcallback.apply(formcallback_scope, [obj]);
1343                     }
1344                 }, false);
1345             }, this);
1346             var elform = selectnode.one('form');
1347             elform.appendChild(Y.Node.create('<input/>').
1348                 setAttrs({type:'hidden',id:'filesource-'+client_id}));
1349             elform.appendChild(Y.Node.create('<input/>').
1350                 setAttrs({type:'hidden',id:'filesourcekey-'+client_id}));
1351             elform.on('keydown', function(e) {
1352                 if (e.keyCode == 13) {
1353                     getfile.simulate('click');
1354                     e.preventDefault();
1355                 }
1356             }, this);
1357             var cancel = selectnode.one('.fp-select-cancel');
1358             cancel.on('click', function(e) {
1359                 e.preventDefault();
1360                 this.selectui.hide();
1361             }, this);
1362         },
1363         wait: function() {
1364             // First check there isn't already an interval in play, and if there is kill it now.
1365             if (this.waitinterval != null) {
1366                 clearInterval(this.waitinterval);
1367             }
1368             // Prepare the root node we will set content for and the loading template we want to display as a YUI node.
1369             var root = this.fpnode.one('.fp-content');
1370             var content = Y.Node.create(M.core_filepicker.templates.loading).addClass('fp-content-hidden').setStyle('opacity', 0);
1371             var count = 0;
1372             // Initiate an interval, we will have a count which will increment every 100 milliseconds.
1373             // Count 0 - the loading icon will have visibility set to hidden (invisible) and have an opacity of 0 (invisible also)
1374             // Count 5 - the visiblity will be switched to visible but opacity will still be at 0 (inivisible)
1375             // Counts 6 - 15 opacity will be increased by 0.1 making the loading icon visible over the period of a second
1376             // Count 16 - The interval will be cancelled.
1377             var interval = setInterval(function(){
1378                 if (!content || !root.contains(content) || count >= 15) {
1379                     clearInterval(interval);
1380                     return true;
1381                 }
1382                 if (count == 5) {
1383                     content.removeClass('fp-content-hidden');
1384                 } else if (count > 5) {
1385                     var opacity = parseFloat(content.getStyle('opacity'));
1386                     content.setStyle('opacity', opacity + 0.1);
1387                 }
1388                 count++;
1389                 return false;
1390             }, 100);
1391             // Store the wait interval so that we can check it in the future.
1392             this.waitinterval = interval;
1393             // Set the content to the loading template.
1394             root.setContent(content);
1395         },
1396         viewbar_set_enabled: function(mode) {
1397             var viewbar = this.fpnode.one('.fp-viewbar')
1398             if (viewbar) {
1399                 if (mode) {
1400                     viewbar.addClass('enabled').removeClass('disabled');
1401                     this.fpnode.all('.fp-vb-icons,.fp-vb-tree,.fp-vb-details').setAttribute("aria-disabled", "false");
1402                     this.fpnode.all('.fp-vb-icons,.fp-vb-tree,.fp-vb-details').setAttribute("tabindex", "");
1403                 } else {
1404                     viewbar.removeClass('enabled').addClass('disabled');
1405                     this.fpnode.all('.fp-vb-icons,.fp-vb-tree,.fp-vb-details').setAttribute("aria-disabled", "true");
1406                     this.fpnode.all('.fp-vb-icons,.fp-vb-tree,.fp-vb-details').setAttribute("tabindex", "-1");
1407                 }
1408             }
1409             this.fpnode.all('.fp-vb-icons,.fp-vb-tree,.fp-vb-details').removeClass('checked');
1410             var modes = {1:'icons', 2:'tree', 3:'details'};
1411             this.fpnode.all('.fp-vb-'+modes[this.viewmode]).addClass('checked');
1412         },
1413         viewbar_clicked: function(e) {
1414             e.preventDefault();
1415             var viewbar = this.fpnode.one('.fp-viewbar')
1416             if (!viewbar || !viewbar.hasClass('disabled')) {
1417                 if (e.currentTarget.hasClass('fp-vb-tree')) {
1418                     this.viewmode = 2;
1419                 } else if (e.currentTarget.hasClass('fp-vb-details')) {
1420                     this.viewmode = 3;
1421                 } else {
1422                     this.viewmode = 1;
1423                 }
1424                 this.viewbar_set_enabled(true)
1425                 this.view_files();
1426                 this.set_preference('recentviewmode', this.viewmode);
1427             }
1428         },
1429         render: function() {
1430             var client_id = this.options.client_id;
1431             var fpid = "filepicker-"+ client_id;
1432             var labelid = 'fp-dialog-label_'+ client_id;
1433             var width = 873;
1434             var draggable = true;
1435             this.fpnode = Y.Node.create(M.core_filepicker.templates.generallayout).
1436                 set('id', 'filepicker-'+client_id).set('aria-labelledby', labelid);
1437
1438             if (this.in_iframe()) {
1439                 width = Math.floor(window.innerWidth * 0.95);
1440                 draggable = false;
1441             }
1442
1443             this.mainui = new M.core.dialogue({
1444                 extraClasses : ['filepicker'],
1445                 draggable    : draggable,
1446                 bodyContent  : this.fpnode,
1447                 headerContent: '<h3 id="'+ labelid +'">'+ M.util.get_string('filepicker', 'repository') +'</h3>',
1448                 centered     : true,
1449                 modal        : true,
1450                 visible      : false,
1451                 width        : width+'px',
1452                 responsiveWidth : 768,
1453                 height       : '558px',
1454                 zIndex       : this.options.zIndex,
1455                 focusOnPreviousTargetAfterHide: true,
1456                 focusAfterHide: this.options.previousActiveElement
1457             });
1458
1459             // create panel for selecting a file (initially hidden)
1460             this.selectnode = Y.Node.create(M.core_filepicker.templates.selectlayout).
1461                 set('id', 'filepicker-select-'+client_id).
1462                 set('aria-live', 'assertive').
1463                 set('role', 'dialog');
1464
1465             var fplabel = 'fp-file_label_'+ client_id;
1466             this.selectui = new M.core.dialogue({
1467                 headerContent: '<h3 id="' + fplabel +'">'+M.util.get_string('select', 'repository')+'</h3>',
1468                 draggable    : true,
1469                 width        : '450px',
1470                 bodyContent  : this.selectnode,
1471                 centered     : true,
1472                 modal        : true,
1473                 visible      : false,
1474                 zIndex       : this.options.zIndex
1475             });
1476             Y.one('#'+this.selectnode.get('id')).setAttribute('aria-labelledby', fplabel);
1477             // event handler for lazy loading of thumbnails and next page
1478             this.fpnode.one('.fp-content').on(['scroll','resize'], this.content_scrolled, this);
1479             // save template for one path element and location of path bar
1480             if (this.fpnode.one('.fp-path-folder')) {
1481                 this.pathnode = this.fpnode.one('.fp-path-folder');
1482                 this.pathbar = this.pathnode.get('parentNode');
1483                 this.pathbar.removeChild(this.pathnode);
1484             }
1485             // assign callbacks for view mode switch buttons
1486             this.fpnode.one('.fp-vb-icons').on('click', this.viewbar_clicked, this);
1487             this.fpnode.one('.fp-vb-tree').on('click', this.viewbar_clicked, this);
1488             this.fpnode.one('.fp-vb-details').on('click', this.viewbar_clicked, this);
1489
1490             // assign callbacks for toolbar links
1491             this.setup_toolbar();
1492             this.setup_select_file();
1493             this.hide_header();
1494
1495             // processing repository listing
1496             // Resort the repositories by sortorder
1497             var sorted_repositories = [];
1498             var i;
1499             for (i in this.options.repositories) {
1500                 sorted_repositories[i] = this.options.repositories[i];
1501             }
1502             sorted_repositories.sort(function(a,b){return a.sortorder-b.sortorder});
1503             // extract one repository template and repeat it for all repositories available,
1504             // set name and icon and assign callbacks
1505             var reponode = this.fpnode.one('.fp-repo');
1506             if (reponode) {
1507                 var list = reponode.get('parentNode');
1508                 list.removeChild(reponode);
1509                 for (i in sorted_repositories) {
1510                     var repository = sorted_repositories[i];
1511                     var h = (parseInt(i) == 0) ? parseInt(i) : parseInt(i) - 1,
1512                         j = (parseInt(i) == Object.keys(sorted_repositories).length - 1) ? parseInt(i) : parseInt(i) + 1;
1513                     var previousrepository = sorted_repositories[h];
1514                     var nextrepository = sorted_repositories[j];
1515                     var node = reponode.cloneNode(true);
1516                     list.appendChild(node);
1517                     node.
1518                         set('id', 'fp-repo-'+client_id+'-'+repository.id).
1519                         on('click', function(e, repository_id) {
1520                             e.preventDefault();
1521                             this.set_preference('recentrepository', repository_id);
1522                             this.hide_header();
1523                             this.list({'repo_id':repository_id});
1524                         }, this /*handler running scope*/, repository.id/*second argument of handler*/);
1525                     node.on('key', function(e, previousrepositoryid, nextrepositoryid, clientid, repositoryid) {
1526                         this.changeHighlightedRepository(e, clientid, repositoryid, previousrepositoryid, nextrepositoryid);
1527                     }, 'down:38,40', this, previousrepository.id, nextrepository.id, client_id, repository.id);
1528                     node.on('key', function(e, repositoryid) {
1529                         e.preventDefault();
1530                         this.set_preference('recentrepository', repositoryid);
1531                         this.hide_header();
1532                         this.list({'repo_id': repositoryid});
1533                     }, 'enter', this, repository.id);
1534                     node.one('.fp-repo-name').setContent(Y.Escape.html(repository.name));
1535                     node.one('.fp-repo-icon').set('src', repository.icon);
1536                     if (i==0) {
1537                         node.addClass('first');
1538                     }
1539                     if (i==sorted_repositories.length-1) {
1540                         node.addClass('last');
1541                     }
1542                     if (i%2) {
1543                         node.addClass('even');
1544                     } else {
1545                         node.addClass('odd');
1546                     }
1547                 }
1548             }
1549             // display error if no repositories found
1550             if (sorted_repositories.length==0) {
1551                 this.display_error(M.util.get_string('norepositoriesavailable', 'repository'), 'norepositoriesavailable')
1552             }
1553             // display repository that was used last time
1554             this.mainui.show();
1555             this.show_recent_repository();
1556         },
1557         /**
1558          * Change the highlighted repository to a new one.
1559          *
1560          * @param  {object} event The key event
1561          * @param  {integer} clientid The client id to identify the repo class.
1562          * @param  {integer} oldrepositoryid The repository id that we are removing the highlight for
1563          * @param  {integer} previousrepositoryid The previous repository id.
1564          * @param  {integer} nextrepositoryid The next repository id.
1565          */
1566         changeHighlightedRepository: function(event, clientid, oldrepositoryid, previousrepositoryid, nextrepositoryid) {
1567             event.preventDefault();
1568             var newrepositoryid = (event.keyCode == '40') ? nextrepositoryid : previousrepositoryid;
1569             this.fpnode.one('#fp-repo-' + clientid + '-' + oldrepositoryid).setAttribute('tabindex', '-1');
1570             this.fpnode.one('#fp-repo-' + clientid + '-' + newrepositoryid)
1571                     .setAttribute('tabindex', '0')
1572                     .focus();
1573         },
1574         parse_repository_options: function(data, appendtolist) {
1575             if (appendtolist) {
1576                 if (data.list) {
1577                     if (!this.filelist) {
1578                         this.filelist = [];
1579                     }
1580                     for (var i in data.list) {
1581                         this.filelist[this.filelist.length] = data.list[i];
1582                     }
1583                 }
1584             } else {
1585                 this.filelist = data.list?data.list:null;
1586                 this.lazyloading = {};
1587             }
1588             this.filepath = data.path?data.path:null;
1589             this.objecttag = data.object?data.object:null;
1590             this.active_repo = {};
1591             this.active_repo.issearchresult = data.issearchresult ? true : false;
1592             this.active_repo.defaultreturntype = data.defaultreturntype?data.defaultreturntype:null;
1593             this.active_repo.dynload = data.dynload?data.dynload:false;
1594             this.active_repo.pages = Number(data.pages?data.pages:null);
1595             this.active_repo.page = Number(data.page?data.page:null);
1596             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))
1597             this.active_repo.id = data.repo_id?data.repo_id:null;
1598             this.active_repo.nosearch = (data.login || data.nosearch); // this is either login form or 'nosearch' attribute set
1599             this.active_repo.norefresh = (data.login || data.norefresh); // this is either login form or 'norefresh' attribute set
1600             this.active_repo.nologin = (data.login || data.nologin); // this is either login form or 'nologin' attribute is set
1601             this.active_repo.logouttext = data.logouttext?data.logouttext:null;
1602             this.active_repo.logouturl = (data.logouturl || '');
1603             this.active_repo.message = (data.message || '');
1604             this.active_repo.help = data.help?data.help:null;
1605             this.active_repo.manage = data.manage?data.manage:null;
1606             // Warning message related to the file reference option, if applicable to the given repository.
1607             this.active_repo.filereferencewarning = data.filereferencewarning ? data.filereferencewarning : null;
1608             this.print_header();
1609         },
1610         print_login: function(data) {
1611             this.parse_repository_options(data);
1612             var client_id = this.options.client_id;
1613             var repository_id = data.repo_id;
1614             var l = this.logindata = data.login;
1615             var loginurl = '';
1616             var action = data['login_btn_action'] ? data['login_btn_action'] : 'login';
1617             var form_id = 'fp-form-'+client_id;
1618
1619             var loginform_node = Y.Node.create(M.core_filepicker.templates.loginform);
1620             loginform_node.one('form').set('id', form_id);
1621             this.fpnode.one('.fp-content').setContent('').appendChild(loginform_node);
1622             var templates = {
1623                 'popup' : loginform_node.one('.fp-login-popup'),
1624                 'textarea' : loginform_node.one('.fp-login-textarea'),
1625                 'select' : loginform_node.one('.fp-login-select'),
1626                 'text' : loginform_node.one('.fp-login-text'),
1627                 'radio' : loginform_node.one('.fp-login-radiogroup'),
1628                 'checkbox' : loginform_node.one('.fp-login-checkbox'),
1629                 'input' : loginform_node.one('.fp-login-input')
1630             };
1631             var container;
1632             for (var i in templates) {
1633                 if (templates[i]) {
1634                     container = templates[i].get('parentNode');
1635                     container.removeChild(templates[i]);
1636                 }
1637             }
1638
1639             for(var k in l) {
1640                 if (templates[l[k].type]) {
1641                     var node = templates[l[k].type].cloneNode(true);
1642                 } else {
1643                     node = templates['input'].cloneNode(true);
1644                 }
1645                 if (l[k].type == 'popup') {
1646                     // submit button
1647                     loginurl = l[k].url;
1648                     var popupbutton = node.one('button');
1649                     popupbutton.on('click', function(e){
1650                         M.core_filepicker.active_filepicker = this;
1651                         window.open(loginurl, 'repo_auth', 'location=0,status=0,width=500,height=300,scrollbars=yes');
1652                         e.preventDefault();
1653                     }, this);
1654                     loginform_node.one('form').on('keydown', function(e) {
1655                         if (e.keyCode == 13) {
1656                             popupbutton.simulate('click');
1657                             e.preventDefault();
1658                         }
1659                     }, this);
1660                     loginform_node.all('.fp-login-submit').remove();
1661                     action = 'popup';
1662                 } else if(l[k].type=='textarea') {
1663                     // textarea element
1664                     if (node.one('label')) {
1665                         node.one('label').set('for', l[k].id).setContent(l[k].label);
1666                     }
1667                     node.one('textarea').setAttrs({id:l[k].id, name:l[k].name});
1668                 } else if(l[k].type=='select') {
1669                     // select element
1670                     if (node.one('label')) {
1671                         node.one('label').set('for', l[k].id).setContent(l[k].label);
1672                     }
1673                     node.one('select').setAttrs({id:l[k].id, name:l[k].name}).setContent('');
1674                     for (i in l[k].options) {
1675                         node.one('select').appendChild(
1676                             Y.Node.create('<option/>').
1677                                 set('value', l[k].options[i].value).
1678                                 setContent(l[k].options[i].label));
1679                     }
1680                 } else if(l[k].type=='radio') {
1681                     // radio input element
1682                     node.all('label').setContent(l[k].label);
1683                     var list = l[k].value.split('|');
1684                     var labels = l[k].value_label.split('|');
1685                     var radionode = null;
1686                     for(var item in list) {
1687                         if (radionode == null) {
1688                             radionode = node.one('.fp-login-radio');
1689                             radionode.one('input').set('checked', 'checked');
1690                         } else {
1691                             var x = radionode.cloneNode(true);
1692                             radionode.insert(x, 'after');
1693                             radionode = x;
1694                             radionode.one('input').set('checked', '');
1695                         }
1696                         radionode.one('input').setAttrs({id:''+l[k].id+item, name:l[k].name,
1697                             type:l[k].type, value:list[item]});
1698                         radionode.all('label').setContent(labels[item]).set('for', ''+l[k].id+item)
1699                     }
1700                     if (radionode == null) {
1701                         node.one('.fp-login-radio').remove();
1702                     }
1703                 } else {
1704                     // input element
1705                     if (node.one('label')) { node.one('label').set('for', l[k].id).setContent(l[k].label) }
1706                     node.one('input').
1707                         set('type', l[k].type).
1708                         set('id', l[k].id).
1709                         set('name', l[k].name).
1710                         set('value', l[k].value?l[k].value:'')
1711                 }
1712                 container.appendChild(node);
1713             }
1714             // custom label text for submit button
1715             if (data['login_btn_label']) {
1716                 loginform_node.all('.fp-login-submit').setContent(data['login_btn_label'])
1717             }
1718             // register button action for login and search
1719             if (action == 'login' || action == 'search') {
1720                 loginform_node.one('.fp-login-submit').on('click', function(e){
1721                     e.preventDefault();
1722                     this.hide_header();
1723                     this.request({
1724                         'scope': this,
1725                         'action':(action == 'search') ? 'search' : 'signin',
1726                         'path': '',
1727                         'client_id': client_id,
1728                         'repository_id': repository_id,
1729                         'form': {id:form_id, upload:false, useDisabled:true},
1730                         'callback': this.display_response
1731                     }, true);
1732                 }, this);
1733             }
1734             // if 'Enter' is pressed in the form, simulate the button click
1735             if (loginform_node.one('.fp-login-submit')) {
1736                 loginform_node.one('form').on('keydown', function(e) {
1737                     if (e.keyCode == 13) {
1738                         loginform_node.one('.fp-login-submit').simulate('click')
1739                         e.preventDefault();
1740                     }
1741                 }, this);
1742             }
1743         },
1744         display_response: function(id, obj, args) {
1745             var scope = args.scope;
1746             // highlight the current repository in repositories list
1747             scope.fpnode.all('.fp-repo.active')
1748                     .removeClass('active')
1749                     .setAttribute('aria-selected', 'false')
1750                     .setAttribute('tabindex', '-1');
1751             scope.fpnode.all('.nav-link')
1752                     .removeClass('active')
1753                     .setAttribute('aria-selected', 'false')
1754                     .setAttribute('tabindex', '-1');
1755             var activenode = scope.fpnode.one('#fp-repo-' + scope.options.client_id + '-' + obj.repo_id);
1756             activenode.addClass('active')
1757                     .setAttribute('aria-selected', 'true')
1758                     .setAttribute('tabindex', '0');
1759             activenode.all('.nav-link').addClass('active');
1760             // add class repository_REPTYPE to the filepicker (for repository-specific styles)
1761             for (var i in scope.options.repositories) {
1762                 scope.fpnode.removeClass('repository_'+scope.options.repositories[i].type)
1763             }
1764             if (obj.repo_id && scope.options.repositories[obj.repo_id]) {
1765                 scope.fpnode.addClass('repository_'+scope.options.repositories[obj.repo_id].type)
1766             }
1767             Y.one('.file-picker .fp-repo-items').focus();
1768
1769             // display response
1770             if (obj.login) {
1771                 scope.viewbar_set_enabled(false);
1772                 scope.print_login(obj);
1773             } else if (obj.upload) {
1774                 scope.viewbar_set_enabled(false);
1775                 scope.parse_repository_options(obj);
1776                 scope.create_upload_form(obj);
1777             } else if (obj.object) {
1778                 M.core_filepicker.active_filepicker = scope;
1779                 scope.viewbar_set_enabled(false);
1780                 scope.parse_repository_options(obj);
1781                 scope.create_object_container(obj.object);
1782             } else if (obj.list) {
1783                 scope.viewbar_set_enabled(true);
1784                 scope.parse_repository_options(obj);
1785                 scope.view_files();
1786             }
1787         },
1788         list: function(args) {
1789             if (!args) {
1790                 args = {};
1791             }
1792             if (!args.repo_id) {
1793                 args.repo_id = this.active_repo.id;
1794             }
1795             if (!args.path) {
1796                 args.path = '';
1797             }
1798             this.currentpath = args.path;
1799             this.request({
1800                 action: 'list',
1801                 client_id: this.options.client_id,
1802                 repository_id: args.repo_id,
1803                 path: args.path,
1804                 page: args.page,
1805                 scope: this,
1806                 callback: this.display_response
1807             }, true);
1808         },
1809         populateLicensesSelect: function(licensenode, filenode) {
1810             if (!licensenode) {
1811                 return;
1812             }
1813             licensenode.setContent('');
1814             var selectedlicense = this.options.defaultlicense;
1815             if (filenode) {
1816                 // File has a license already, use it.
1817                 selectedlicense = filenode.license;
1818             } else if (this.options.rememberuserlicensepref && this.get_preference('recentlicense')) {
1819                 // When 'Remember user licence preference' is enabled use the last license selected by the user, if any.
1820                 selectedlicense = this.get_preference('recentlicense');
1821             }
1822             var licenses = this.options.licenses;
1823             for (var i in licenses) {
1824                 // Include the file's current license, even if not enabled, to prevent displaying
1825                 // misleading information about which license the file currently has assigned to it.
1826                 if (licenses[i].enabled == true || (filenode !== undefined && licenses[i].shortname === filenode.license)) {
1827                     var option = Y.Node.create('<option/>').
1828                     set('selected', (licenses[i].shortname == selectedlicense)).
1829                     set('value', licenses[i].shortname).
1830                     setContent(Y.Escape.html(licenses[i].fullname));
1831                     licensenode.appendChild(option);
1832                 }
1833             }
1834         },
1835         create_object_container: function(data) {
1836             var content = this.fpnode.one('.fp-content');
1837             content.setContent('');
1838             //var str = '<object data="'+data.src+'" type="'+data.type+'" width="98%" height="98%" id="container_object" class="fp-object-container mdl-align"></object>';
1839             var container = Y.Node.create('<object/>').
1840                 setAttrs({data:data.src, type:data.type, id:'container_object'}).
1841                 addClass('fp-object-container');
1842             content.setContent('').appendChild(container);
1843         },
1844         create_upload_form: function(data) {
1845             var client_id = this.options.client_id;
1846             var id = data.upload.id+'_'+client_id;
1847             var content = this.fpnode.one('.fp-content');
1848             var template_name = 'uploadform_'+this.options.repositories[data.repo_id].type;
1849             var template = M.core_filepicker.templates[template_name] || M.core_filepicker.templates['uploadform'];
1850             content.setContent(template);
1851
1852             content.all('.fp-file,.fp-saveas,.fp-setauthor,.fp-setlicense').each(function (node) {
1853                 node.all('label').set('for', node.one('input,select').generateID());
1854             });
1855             content.one('form').set('id', id);
1856             content.one('.fp-file input').set('name', 'repo_upload_file');
1857             if (data.upload.label && content.one('.fp-file label')) {
1858                 content.one('.fp-file label').setContent(data.upload.label);
1859             }
1860             content.one('.fp-saveas input').set('name', 'title');
1861             content.one('.fp-setauthor input').setAttrs({name:'author', value:this.options.author});
1862             content.one('.fp-setlicense select').set('name', 'license');
1863             this.populateLicensesSelect(content.one('.fp-setlicense select'));
1864             // append hidden inputs to the upload form
1865             content.one('form').appendChild(Y.Node.create('<input/>').
1866                 setAttrs({type:'hidden',name:'itemid',value:this.options.itemid}));
1867             var types = this.options.accepted_types;
1868             for (var i in types) {
1869                 content.one('form').appendChild(Y.Node.create('<input/>').
1870                     setAttrs({type:'hidden',name:'accepted_types[]',value:types[i]}));
1871             }
1872
1873             var scope = this;
1874             content.one('.fp-upload-btn').on('click', function(e) {
1875                 e.preventDefault();
1876                 var license = content.one('.fp-setlicense select');
1877
1878                 if (this.options.rememberuserlicensepref) {
1879                     this.set_preference('recentlicense', license.get('value'));
1880                 }
1881                 if (!content.one('.fp-file input').get('value')) {
1882                     scope.print_msg(M.util.get_string('nofilesattached', 'repository'), 'error');
1883                     return false;
1884                 }
1885                 this.hide_header();
1886                 scope.request({
1887                         scope: scope,
1888                         action:'upload',
1889                         client_id: client_id,
1890                         params: {'savepath':scope.options.savepath},
1891                         repository_id: scope.active_repo.id,
1892                         form: {id: id, upload:true},
1893                         onerror: function(id, o, args) {
1894                             scope.create_upload_form(data);
1895                         },
1896                         callback: function(id, o, args) {
1897                             if (o.event == 'fileexists') {
1898                                 scope.create_upload_form(data);
1899                                 scope.process_existing_file(o);
1900                                 return;
1901                             }
1902                             if (scope.options.editor_target&&scope.options.env=='editor') {
1903                                 scope.options.editor_target.value=o.url;
1904                                 scope.options.editor_target.dispatchEvent(new Event('change'), {'bubbles': true});
1905                             }
1906                             scope.hide();
1907                             o.client_id = client_id;
1908                             var formcallback_scope = args.scope.options.magicscope ? args.scope.options.magicscope : args.scope;
1909                             scope.options.formcallback.apply(formcallback_scope, [o]);
1910                         }
1911                 }, true);
1912             }, this);
1913         },
1914         /** setting handlers and labels for elements in toolbar. Called once during the initial render of filepicker */
1915         setup_toolbar: function() {
1916             var client_id = this.options.client_id;
1917             var toolbar = this.fpnode.one('.fp-toolbar');
1918             toolbar.one('.fp-tb-logout').one('a,button').on('click', function(e) {
1919                 e.preventDefault();
1920                 if (!this.active_repo.nologin) {
1921                     this.hide_header();
1922                     this.request({
1923                         action:'logout',
1924                         client_id: this.options.client_id,
1925                         repository_id: this.active_repo.id,
1926                         path:'',
1927                         callback: this.display_response
1928                     }, true);
1929                 }
1930                 if (this.active_repo.logouturl) {
1931                     window.open(this.active_repo.logouturl, 'repo_auth', 'location=0,status=0,width=500,height=300,scrollbars=yes');
1932                 }
1933             }, this);
1934             toolbar.one('.fp-tb-refresh').one('a,button').on('click', function(e) {
1935                 e.preventDefault();
1936                 if (!this.active_repo.norefresh) {
1937                     this.list({ path: this.currentpath });
1938                 }
1939             }, this);
1940             toolbar.one('.fp-tb-search form').
1941                 set('method', 'POST').
1942                 set('id', 'fp-tb-search-'+client_id).
1943                 on('submit', function(e) {
1944                     e.preventDefault();
1945                     if (!this.active_repo.nosearch) {
1946                         this.request({
1947                             scope: this,
1948                             action:'search',
1949                             client_id: this.options.client_id,
1950                             repository_id: this.active_repo.id,
1951                             form: {id: 'fp-tb-search-'+client_id, upload:false, useDisabled:true},
1952                             callback: this.display_response
1953                         }, true);
1954                     }
1955             }, this);
1956
1957             // it does not matter what kind of element is .fp-tb-manage, we create a dummy <a>
1958             // element and use it to open url on click event
1959             var managelnk = Y.Node.create('<a/>').
1960                 setAttrs({id:'fp-tb-manage-'+client_id+'-link', target:'_blank'}).
1961                 setStyle('display', 'none');
1962             toolbar.append(managelnk);
1963             toolbar.one('.fp-tb-manage').one('a,button').
1964                 on('click', function(e) {
1965                     e.preventDefault();
1966                     managelnk.simulate('click')
1967                 });
1968
1969             // same with .fp-tb-help
1970             var helplnk = Y.Node.create('<a/>').
1971                 setAttrs({id:'fp-tb-help-'+client_id+'-link', target:'_blank'}).
1972                 setStyle('display', 'none');
1973             toolbar.append(helplnk);
1974             toolbar.one('.fp-tb-help').one('a,button').
1975                 on('click', function(e) {
1976                     e.preventDefault();
1977                     helplnk.simulate('click')
1978                 });
1979         },
1980         hide_header: function() {
1981             if (this.fpnode.one('.fp-toolbar')) {
1982                 this.fpnode.one('.fp-toolbar').addClass('empty');
1983             }
1984             if (this.pathbar) {
1985                 this.pathbar.setContent('').addClass('empty');
1986             }
1987         },
1988         print_header: function() {
1989             var r = this.active_repo;
1990             var scope = this;
1991             var client_id = this.options.client_id;
1992             this.hide_header();
1993             this.print_path();
1994             var toolbar = this.fpnode.one('.fp-toolbar');
1995             if (!toolbar) { return; }
1996
1997             var enable_tb_control = function(node, enabled) {
1998                 if (!node) { return; }
1999                 node.addClassIf('disabled', !enabled).addClassIf('enabled', enabled)
2000                 if (enabled) {
2001                     toolbar.removeClass('empty');
2002                 }
2003             }
2004
2005             // TODO 'back' permanently disabled for now. Note, flickr_public uses 'Logout' for it!
2006             enable_tb_control(toolbar.one('.fp-tb-back'), false);
2007
2008             // search form
2009             enable_tb_control(toolbar.one('.fp-tb-search'), !r.nosearch);
2010             if(!r.nosearch) {
2011                 var searchform = toolbar.one('.fp-tb-search form');
2012                 searchform.setContent('');
2013                 this.request({
2014                     scope: this,
2015                     action:'searchform',
2016                     repository_id: this.active_repo.id,
2017                     callback: function(id, obj, args) {
2018                         if (obj.repo_id == scope.active_repo.id && obj.form) {
2019                             // if we did not jump to another repository meanwhile
2020                             searchform.setContent(obj.form);
2021                             // Highlight search text when user click for search.
2022                             var searchnode = searchform.one('input[name="s"]');
2023                             if (searchnode) {
2024                                 searchnode.once('click', function(e) {
2025                                     e.preventDefault();
2026                                     this.select();
2027                                 });
2028                             }
2029                         }
2030                     }
2031                 }, false);
2032             }
2033
2034             // refresh button
2035             // weather we use cache for this instance, this button will reload listing anyway
2036             enable_tb_control(toolbar.one('.fp-tb-refresh'), !r.norefresh);
2037
2038             // login button
2039             enable_tb_control(toolbar.one('.fp-tb-logout'), !r.nologin);
2040
2041             // manage url
2042             enable_tb_control(toolbar.one('.fp-tb-manage'), r.manage);
2043             Y.one('#fp-tb-manage-'+client_id+'-link').set('href', r.manage);
2044
2045             // help url
2046             enable_tb_control(toolbar.one('.fp-tb-help'), r.help);
2047             Y.one('#fp-tb-help-'+client_id+'-link').set('href', r.help);
2048
2049             // message
2050             enable_tb_control(toolbar.one('.fp-tb-message'), r.message);
2051             toolbar.one('.fp-tb-message').setContent(r.message);
2052         },
2053         print_path: function() {
2054             if (!this.pathbar) {
2055                 return;
2056             }
2057             this.pathbar.setContent('').addClass('empty');
2058             var p = this.filepath;
2059             if (p && p.length!=0 && this.viewmode != 2) {
2060                 for(var i = 0; i < p.length; i++) {
2061                     var el = this.pathnode.cloneNode(true);
2062                     this.pathbar.appendChild(el);
2063                     if (i == 0) {
2064                         el.addClass('first');
2065                     }
2066                     if (i == p.length-1) {
2067                         el.addClass('last');
2068                     }
2069                     if (i%2) {
2070                         el.addClass('even');
2071                     } else {
2072                         el.addClass('odd');
2073                     }
2074                     el.all('.fp-path-folder-name').setContent(Y.Escape.html(p[i].name));
2075                     el.on('click',
2076                             function(e, path) {
2077                                 e.preventDefault();
2078                                 this.list({'path':path});
2079                             },
2080                         this, p[i].path);
2081                 }
2082                 this.pathbar.removeClass('empty');
2083             }
2084         },
2085         hide: function() {
2086             this.selectui.hide();
2087             if (this.process_dlg) {
2088                 this.process_dlg.hide();
2089             }
2090             if (this.msg_dlg) {
2091                 this.msg_dlg.hide();
2092             }
2093             this.mainui.hide();
2094         },
2095         show: function() {
2096             if (this.fpnode) {
2097                 this.hide();
2098                 this.mainui.show();
2099                 this.show_recent_repository();
2100             } else {
2101                 this.launch();
2102             }
2103         },
2104         launch: function() {
2105             this.render();
2106         },
2107         show_recent_repository: function() {
2108             this.hide_header();
2109             this.viewbar_set_enabled(false);
2110             var repository_id = this.get_preference('recentrepository');
2111             this.viewmode = this.get_preference('recentviewmode');
2112             if (this.viewmode != 2 && this.viewmode != 3) {
2113                 this.viewmode = 1;
2114             }
2115             if (this.options.repositories[repository_id]) {
2116                 this.list({'repo_id':repository_id});
2117             }
2118         },
2119         get_preference: function (name) {
2120             if (this.options.userprefs[name]) {
2121                 return this.options.userprefs[name];
2122             } else {
2123                 return false;
2124             }
2125         },
2126         set_preference: function(name, value) {
2127             if (this.options.userprefs[name] != value) {
2128                 require(['core_user/repository'], function(UserRepository) {
2129                     UserRepository.setUserPreference('filepicker_' + name, value);
2130                     this.options.userprefs[name] = value;
2131                 }.bind(this));
2132             }
2133         },
2134         in_iframe: function () {
2135             // If we're not the top window then we're in an iFrame
2136             return window.self !== window.top;
2137         }
2138     });
2139     var loading = Y.one('#filepicker-loading-'+options.client_id);
2140     if (loading) {
2141         loading.setStyle('display', 'none');
2142     }
2143     M.core_filepicker.instances[options.client_id] = new FilePickerHelper(options);
2144 };