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