repository/filepicker.js

   1 // YUI3 File Picker module for moodle
   2 // Author: Dongsheng Cai <dongsheng@moodle.com>
   3
   4 /**
   5  *
   6  * File Picker UI
   7  * =====
   8  * this.fpnode, contains reference to filepicker Node, non-empty if and only if rendered
   9  * this.api, stores the URL to make ajax request
  10  * this.mainui, YUI Panel
  11  * this.selectnode, contains reference to select-file Node
  12  * this.selectui, YUI Panel for selecting particular file
  13  * this.msg_dlg, YUI Panel for error or info message
  14  * this.process_dlg, YUI Panel for processing existing filename
  15  * this.treeview, YUI Treeview
  16  * this.viewmode, store current view mode
  17  * this.pathbar, reference to the Node with path bar
  18  * this.pathnode, a Node element representing one folder in a path bar (not attached anywhere, just used for template)
  19  * this.currentpath, the current path in the repository (or last requested path)
  20  *
  21  * Filepicker options:
  22  * =====
  23  * this.options.client_id, the instance id
  24  * this.options.contextid
  25  * this.options.itemid
  26  * this.options.repositories, stores all repositories displayed in file picker
  27  * this.options.formcallback
  28  *
  29  * Active repository options
  30  * =====
  31  * this.active_repo.id
  32  * this.active_repo.defaultreturntype
  33  * this.active_repo.nosearch
  34  * this.active_repo.norefresh
  35  * this.active_repo.nologin
  36  * this.active_repo.help
  37  * this.active_repo.manage
  38  *
  39  * Server responses
  40  * =====
  41  * this.filelist, cached filelist
  42  * this.pages
  43  * this.page
  44  * this.filepath, current path (each element of the array is a part of the breadcrumb)
  45  * this.logindata, cached login form
  46  */
  47
  48 YUI.add('moodle-core_filepicker', function(Y) {
  49     /** help function to extract width/height style as a number, not as a string */
  50     Y.Node.prototype.getStylePx = function(attr) {
  51         var style = this.getStyle(attr);
  52         if (''+style == '0' || ''+style == '0px') {
  53             return 0;
  54         }
  55         var matches = style.match(/^([\d\.]+)px$/)
  56         if (matches && parseFloat(matches[1])) {
  57             return parseFloat(matches[1]);
  58         }
  59         return null;
  60     }
  61
  62     /** if condition is met, the class is added to the node, otherwise - removed */
  63     Y.Node.prototype.addClassIf = function(className, condition) {
  64         if (condition) {
  65             this.addClass(className);
  66         } else {
  67             this.removeClass(className);
  68         }
  69         return this;
  70     }
  71
  72     /** sets the width(height) of the node considering existing minWidth(minHeight) */
  73     Y.Node.prototype.setStyleAdv = function(stylename, value) {
  74         var stylenameCap = stylename.substr(0,1).toUpperCase() + stylename.substr(1, stylename.length-1).toLowerCase();
  75         this.setStyle(stylename, '' + Math.max(value, this.getStylePx('min'+stylenameCap)) + 'px')
  76         return this;
  77     }
  78
  79     /** set image source to src, if there is preview, remember it in lazyloading.
  80      *  If there is a preview and it was already loaded, use it. */
  81     Y.Node.prototype.setImgSrc = function(src, realsrc, lazyloading) {
  82         if (realsrc) {
  83             if (M.core_filepicker.loadedpreviews[realsrc]) {
  84                 this.set('src', realsrc).addClass('realpreview');
  85                 return this;
  86             } else {
  87                 if (!this.get('id')) {
  88                     this.generateID();
  89                 }
  90                 lazyloading[this.get('id')] = realsrc;
  91             }
  92         }
  93         this.set('src', src);
  94         return this;
  95     }
  96
  97     /**
  98      * Replaces the image source with preview. If the image is inside the treeview, we need
  99      * also to update the html property of corresponding YAHOO.widget.HTMLNode
 100      * @param array lazyloading array containing associations of imgnodeid->realsrc
 101      */
 102     Y.Node.prototype.setImgRealSrc = function(lazyloading) {
 103         if (this.get('id') && lazyloading[this.get('id')]) {
 104             var newsrc = lazyloading[this.get('id')];
 105             M.core_filepicker.loadedpreviews[newsrc] = true;
 106             this.set('src', newsrc).addClass('realpreview');
 107             delete lazyloading[this.get('id')];
 108             var treenode = this.ancestor('.fp-treeview')
 109             if (treenode && treenode.get('parentNode').treeview) {
 110                 treenode.get('parentNode').treeview.getRoot().refreshPreviews(this.get('id'), newsrc);
 111             }
 112         }
 113         return this;
 114     }
 115
 116     /** scan TreeView to find which node contains image with id=imgid and replace it's html
 117      * with the new image source. */
 118     Y.YUI2.widget.Node.prototype.refreshPreviews = function(imgid, newsrc, regex) {
 119         if (!regex) {
 120             regex = new RegExp("<img\\s[^>]*id=\""+imgid+"\"[^>]*?(/?)>", "im");
 121         }
 122         if (this.expanded || this.isLeaf) {
 123             var html = this.getContentHtml();
 124             if (html && this.setHtml && regex.test(html)) {
 125                 var newhtml = this.html.replace(regex, "<img id=\""+imgid+"\" src=\""+newsrc+"\" class=\"realpreview\"$1>", html);
 126                 this.setHtml(newhtml);
 127                 return true;
 128             }
 129             if (!this.isLeaf && this.children) {
 130                 for(var c in this.children) {
 131                     if (this.children[c].refreshPreviews(imgid, newsrc, regex)) {
 132                         return true;
 133                     }
 134                 }
 135             }
 136         }
 137         return false;
 138     }
 139
 140     /**
 141      * Displays a list of files (used by filepicker, filemanager) inside the Node
 142      *
 143      * @param array options
 144      *   viewmode : 1 - icons, 2 - tree, 3 - table
 145      *   appendonly : whether fileslist need to be appended instead of replacing the existing content
 146      *   filenode : Node element that contains template for displaying one file
 147      *   callback : On click callback. The element of the fileslist array will be passed as argument
 148      *   rightclickcallback : On right click callback (optional).
 149      *   callbackcontext : context where callbacks are executed
 150      *   sortable : whether content may be sortable (in table mode)
 151      *   dynload : allow dynamic load for tree view
 152      *   filepath : for pre-building of tree view - the path to the current directory in filepicker format
 153      *   treeview_dynload : callback to function to dynamically load the folder in tree view
 154      *   classnamecallback : callback to function that returns the class name for an element
 155      * @param array fileslist array of files to show, each array element may have attributes:
 156      *   title or fullname : file name
 157      *   shorttitle (optional) : display file name
 158      *   thumbnail : url of image
 159      *   icon : url of icon image
 160      *   thumbnail_width : width of thumbnail, default 90
 161      *   thumbnail_height : height of thumbnail, default 90
 162      *   thumbnail_alt : TODO not needed!
 163      *   description or thumbnail_title : alt text
 164      * @param array lazyloading : reference to the array with lazy loading images
 165      */
 166     Y.Node.prototype.fp_display_filelist = function(options, fileslist, lazyloading) {
 167         var viewmodeclassnames = {1:'fp-iconview', 2:'fp-treeview', 3:'fp-tableview'};
 168         var classname = viewmodeclassnames[options.viewmode];
 169         var scope = this;
 170         /** return whether file is a folder (different attributes in FileManager and FilePicker) */
 171         var file_is_folder = function(node) {
 172             if (node.children) {return true;}
 173             if (node.type && node.type == 'folder') {return true;}
 174             return false;
 175         };
 176         /** return the name of the file (different attributes in FileManager and FilePicker) */
 177         var file_get_filename = function(node) {
 178             return node.title ? node.title : node.fullname;
 179         };
 180         /** return display name of the file (different attributes in FileManager and FilePicker) */
 181         var file_get_displayname = function(node) {
 182             var displayname = node.shorttitle ? node.shorttitle : file_get_filename(node);
 183             return Y.Escape.html(displayname);
 184         };
 185         /** return file description (different attributes in FileManager and FilePicker) */
 186         var file_get_description = function(node) {
 187             var description = '';
 188             if (node.description) {
 189                 description = node.description;
 190             } else if (node.thumbnail_title) {
 191                 description = node.thumbnail_title;
 192             } else {
 193                 description = file_get_filename(node);
 194             }
 195             return Y.Escape.html(description);
 196         };
 197         /** help funciton for tree view */
 198         var build_tree = function(node, level) {
 199             // prepare file name with icon
 200             var el = Y.Node.create('<div/>');
 201             el.appendChild(options.filenode.cloneNode(true));
 202
 203             el.one('.fp-filename').setContent(file_get_displayname(node));
 204             // TODO add tooltip with node.title or node.thumbnail_title
 205             var tmpnodedata = {className:options.classnamecallback(node)};
 206             el.get('children').addClass(tmpnodedata.className);
 207             if (node.icon) {
 208                 el.one('.fp-icon').appendChild(Y.Node.create('<img/>'));
 209                 el.one('.fp-icon img').setImgSrc(node.icon, node.realicon, lazyloading);
 210             }
 211             // create node
 212             tmpnodedata.html = el.getContent();
 213             var tmpNode = new Y.YUI2.widget.HTMLNode(tmpnodedata, level, false);
 214             if (node.dynamicLoadComplete) {
 215                 tmpNode.dynamicLoadComplete = true;
 216             }
 217             tmpNode.fileinfo = node;
 218             tmpNode.isLeaf = !file_is_folder(node);
 219             if (!tmpNode.isLeaf) {
 220                 if(node.expanded) {
 221                     tmpNode.expand();
 222                 }
 223                 tmpNode.path = node.path ? node.path : (node.filepath ? node.filepath : '');
 224                 for(var c in node.children) {
 225                     build_tree(node.children[c], tmpNode);
 226                 }
 227             }
 228         };
 229         /** initialize tree view */
 230         var initialize_tree_view = function() {
 231             var parentid = scope.one('.'+classname).get('id');
 232             // TODO MDL-32736 use YUI3 gallery TreeView
 233             scope.treeview = new Y.YUI2.widget.TreeView(parentid);
 234             if (options.dynload) {
 235                 scope.treeview.setDynamicLoad(Y.bind(options.treeview_dynload, options.callbackcontext), 1);
 236             }
 237             scope.treeview.singleNodeHighlight = true;
 238             if (options.filepath && options.filepath.length) {
 239                 // we just jumped from icon/details view, we need to show all parents
 240                 // we extract as much information as possible from filepath and filelist
 241                 // and send additional requests to retrieve siblings for parent folders
 242                 var mytree = {};
 243                 var mytreeel = null;
 244                 for (var i in options.filepath) {
 245                     if (mytreeel == null) {
 246                         mytreeel = mytree;
 247                     } else {
 248                         mytreeel.children = [{}];
 249                         mytreeel = mytreeel.children[0];
 250                     }
 251                     var pathelement = options.filepath[i];
 252                     mytreeel.path = pathelement.path;
 253                     mytreeel.title = pathelement.name;
 254                     mytreeel.icon = pathelement.icon;
 255                     mytreeel.dynamicLoadComplete = true; // we will call it manually
 256                     mytreeel.expanded = true;
 257                 }
 258                 mytreeel.children = fileslist;
 259                 build_tree(mytree, scope.treeview.getRoot());
 260                 // manually call dynload for parent elements in the tree so we can load other siblings
 261                 if (options.dynload) {
 262                     var root = scope.treeview.getRoot();
 263                     while (root && root.children && root.children.length) {
 264                         root = root.children[0];
 265                         if (root.path == mytreeel.path) {
 266                             root.origpath = options.filepath;
 267                             root.origlist = fileslist;
 268                         } else if (!root.isLeaf && root.expanded) {
 269                             Y.bind(options.treeview_dynload, options.callbackcontext)(root, null);
 270                         }
 271                     }
 272                 }
 273             } else {
 274                 // there is no path information, just display all elements as a list, without hierarchy
 275                 for(k in fileslist) {
 276                     build_tree(fileslist[k], scope.treeview.getRoot());
 277                 }
 278             }
 279             scope.treeview.subscribe('clickEvent', function(e){
 280                 e.node.highlight(false);
 281                 var callback = options.callback;
 282                 if (options.rightclickcallback && e.event.target &&
 283                         Y.Node(e.event.target).ancestor('.fp-treeview .fp-contextmenu', true)) {
 284                     callback = options.rightclickcallback;
 285                 }
 286                 Y.bind(callback, options.callbackcontext)(e, e.node.fileinfo);
 287                 Y.YUI2.util.Event.stopEvent(e.event)
 288             });
 289             // TODO MDL-32736 support right click
 290             /*if (options.rightclickcallback) {
 291                 scope.treeview.subscribe('dblClickEvent', function(e){
 292                     e.node.highlight(false);
 293                     Y.bind(options.rightclickcallback, options.callbackcontext)(e, e.node.fileinfo);
 294                 });
 295             }*/
 296             scope.treeview.draw();
 297         };
 298         /** formatting function for table view */
 299         var formatValue = function (o){
 300             if (o.data[''+o.column.key+'_f_s']) {return o.data[''+o.column.key+'_f_s'];}
 301             else if (o.data[''+o.column.key+'_f']) {return o.data[''+o.column.key+'_f'];}
 302             else if (o.value) {return o.value;}
 303             else {return '';}
 304         };
 305         /** formatting function for table view */
 306         var formatTitle = function(o) {
 307             var el = Y.Node.create('<div/>');
 308             el.appendChild(options.filenode.cloneNode(true)); // TODO not node but string!
 309             el.get('children').addClass(o.data['classname']);
 310             el.one('.fp-filename').setContent(o.value);
 311             if (o.data['icon']) {
 312                 el.one('.fp-icon').appendChild(Y.Node.create('<img/>'));
 313                 el.one('.fp-icon img').setImgSrc(o.data['icon'], o.data['realicon'], lazyloading);
 314             }
 315             if (options.rightclickcallback) {
 316                 el.get('children').addClass('fp-hascontextmenu');
 317             }
 318             // TODO add tooltip with o.data['title'] (o.value) or o.data['thumbnail_title']
 319             return el.getContent();
 320         }
 321         /** sorting function for table view */
 322         var sortFoldersFirst = function(a, b, desc) {
 323             if (a.get('isfolder') && !b.get('isfolder')) {
 324                 return -1;
 325             }
 326             if (!a.get('isfolder') && b.get('isfolder')) {
 327                 return 1;
 328             }
 329             var aa = a.get(this.key), bb = b.get(this.key), dir = desc ? -1 : 1;
 330             return (aa > bb) ? dir : ((aa < bb) ? -dir : 0);
 331         }
 332         /** initialize table view */
 333         var initialize_table_view = function() {
 334             var cols = [
 335                 {key: "displayname", label: M.util.get_string('name', 'moodle'), allowHTML: true, formatter: formatTitle,
 336                     sortable: true, sortFn: sortFoldersFirst},
 337                 {key: "datemodified", label: M.util.get_string('lastmodified', 'moodle'), allowHTML: true, formatter: formatValue,
 338                     sortable: true, sortFn: sortFoldersFirst},
 339                 {key: "size", label: M.util.get_string('size', 'repository'), allowHTML: true, formatter: formatValue,
 340                     sortable: true, sortFn: sortFoldersFirst},
 341                 {key: "mimetype", label: M.util.get_string('type', 'repository'), allowHTML: true,
 342                     sortable: true, sortFn: sortFoldersFirst}
 343             ];
 344             scope.tableview = new Y.DataTable({columns: cols, data: fileslist});
 345             scope.tableview.delegate('click', function (e, tableview) {
 346                 var record = tableview.getRecord(e.currentTarget.get('id'));
 347                 if (record) {
 348                     var callback = options.callback;
 349                     if (options.rightclickcallback && e.target.ancestor('.fp-tableview .fp-contextmenu', true)) {
 350                         callback = options.rightclickcallback;
 351                     }
 352                     Y.bind(callback, this)(e, record.getAttrs());
 353                 }
 354             }, 'tr', options.callbackcontext, scope.tableview);
 355             if (options.rightclickcallback) {
 356                 scope.tableview.delegate('contextmenu', function (e, tableview) {
 357                     var record = tableview.getRecord(e.currentTarget.get('id'));
 358                     if (record) { Y.bind(options.rightclickcallback, this)(e, record.getAttrs()); }
 359                 }, 'tr', options.callbackcontext, scope.tableview);
 360             }
 361         }
 362         /** append items in table view mode */
 363         var append_files_table = function() {
 364             if (options.appendonly) {
 365                 fileslist.forEach(function(el) {
 366                     this.tableview.data.add(el);
 367                 },scope);
 368             }
 369             scope.tableview.render(scope.one('.'+classname));
 370             scope.tableview.sortable = options.sortable ? true : false;
 371         };
 372         /** append items in tree view mode */
 373         var append_files_tree = function() {
 374             if (options.appendonly) {
 375                 var parentnode = scope.treeview.getRoot();
 376                 if (scope.treeview.getHighlightedNode()) {
 377                     parentnode = scope.treeview.getHighlightedNode();
 378                     if (parentnode.isLeaf) {parentnode = parentnode.parent;}
 379                 }
 380                 for (var k in fileslist) {
 381                     build_tree(fileslist[k], parentnode);
 382                 }
 383                 scope.treeview.draw();
 384             } else {
 385                 // otherwise files were already added in initialize_tree_view()
 386             }
 387         }
 388         /** append items in icon view mode */
 389         var append_files_icons = function() {
 390             parent = scope.one('.'+classname);
 391             for (var k in fileslist) {
 392                 var node = fileslist[k];
 393                 var element = options.filenode.cloneNode(true);
 394                 parent.appendChild(element);
 395                 element.addClass(options.classnamecallback(node));
 396                 var filenamediv = element.one('.fp-filename');
 397                 filenamediv.setContent(file_get_displayname(node));
 398                 var imgdiv = element.one('.fp-thumbnail'), width, height, src;
 399                 if (node.thumbnail) {
 400                     width = node.thumbnail_width ? node.thumbnail_width : 90;
 401                     height = node.thumbnail_height ? node.thumbnail_height : 90;
 402                     src = node.thumbnail;
 403                 } else {
 404                     width = 16;
 405                     height = 16;
 406                     src = node.icon;
 407                 }
 408                 filenamediv.setStyleAdv('width', width);
 409                 imgdiv.setStyleAdv('width', width).setStyleAdv('height', height);
 410                 var img = Y.Node.create('<img/>').setAttrs({
 411                         title: file_get_description(node),
 412                         alt: Y.Escape.html(node.thumbnail_alt ? node.thumbnail_alt : file_get_filename(node))}).
 413                     setStyle('maxWidth', ''+width+'px').
 414                     setStyle('maxHeight', ''+height+'px');
 415                 img.setImgSrc(src, node.realthumbnail, lazyloading);
 416                 imgdiv.appendChild(img);
 417                 element.on('click', function(e, nd) {
 418                     if (options.rightclickcallback && e.target.ancestor('.fp-iconview .fp-contextmenu', true)) {
 419                         Y.bind(options.rightclickcallback, this)(e, nd);
 420                     } else {
 421                         Y.bind(options.callback, this)(e, nd);
 422                     }
 423                 }, options.callbackcontext, node);
 424                 if (options.rightclickcallback) {
 425                     element.on('contextmenu', options.rightclickcallback, options.callbackcontext, node);
 426                 }
 427             }
 428         }
 429
 430         // Notify the user if any of the files has a problem status.
 431         var problemFiles = [];
 432         fileslist.forEach(function(file) {
 433             if (!file_is_folder(file) && file.hasOwnProperty('status') && file.status != 0) {
 434                 problemFiles.push(file);
 435             }
 436         });
 437         if (problemFiles.length > 0) {
 438             require(["core/notification", "core/str"], function(Notification, Str) {
 439                 problemFiles.forEach(function(problemFile) {
 440                     Str.get_string('storedfilecannotreadfile', 'error', problemFile.fullname).then(function(string) {
 441                         Notification.addNotification({
 442                             message: string,
 443                             type: "error"
 444                         });
 445                         return;
 446                     }).catch(Notification.exception);
 447                 });
 448             });
 449         }
 450
 451         // If table view, need some additional properties
 452         // before passing fileslist to the YUI tableview
 453         if (options.viewmode == 3) {
 454             fileslist.forEach(function(el) {
 455                 el.displayname = file_get_displayname(el);
 456                 el.isfolder = file_is_folder(el);
 457                 el.classname = options.classnamecallback(el);
 458             }, scope);
 459         }
 460
 461         // initialize files view
 462         if (!options.appendonly) {
 463             var parent = Y.Node.create('<div/>').addClass(classname);
 464             this.setContent('').appendChild(parent);
 465             parent.generateID();
 466             if (options.viewmode == 2) {
 467                 initialize_tree_view();
 468             } else if (options.viewmode == 3) {
 469                 initialize_table_view();
 470             } else {
 471                 // nothing to initialize for icon view
 472             }
 473         }
 474
 475         // append files to the list
 476         if (options.viewmode == 2) {
 477             append_files_tree();
 478         } else if (options.viewmode == 3) {
 479             append_files_table();
 480         } else {
 481             append_files_icons();
 482         }
 483
 484     }
 485 }, '@VERSION@', {
 486     requires:['base', 'node', 'yui2-treeview', 'panel', 'cookie', 'datatable', 'datatable-sort']
 487 });
 488
 489 M.core_filepicker = M.core_filepicker || {};
 490
 491 /**
 492  * instances of file pickers used on page
 493  */
 494 M.core_filepicker.instances = M.core_filepicker.instances || {};
 495 M.core_filepicker.active_filepicker = null;
 496
 497 /**
 498  * HTML Templates to use in FilePicker
 499  */
 500 M.core_filepicker.templates = M.core_filepicker.templates || {};
 501
 502 /**
 503  * Array of image sources for real previews (realicon or realthumbnail) that are already loaded
 504  */
 505 M.core_filepicker.loadedpreviews = M.core_filepicker.loadedpreviews || {};
 506
 507 /**
 508 * Set selected file info
 509 *
 510 * @param object file info
 511 */
 512 M.core_filepicker.select_file = function(file) {
 513     M.core_filepicker.active_filepicker.select_file(file);
 514 }
 515
 516 /**
 517  * Init and show file picker
 518  */
 519 M.core_filepicker.show = function(Y, options) {
 520     if (!M.core_filepicker.instances[options.client_id]) {
 521         M.core_filepicker.init(Y, options);
 522     }
 523     M.core_filepicker.instances[options.client_id].options.formcallback = options.formcallback;
 524     M.core_filepicker.instances[options.client_id].show();
 525 };
 526
 527 M.core_filepicker.set_templates = function(Y, templates) {
 528     for (var templid in templates) {
 529         M.core_filepicker.templates[templid] = templates[templid];
 530     }
 531 }
 532
 533 /**
 534  * Add new file picker to current instances
 535  */
 536 M.core_filepicker.init = function(Y, options) {
 537     var FilePickerHelper = function(options) {
 538         FilePickerHelper.superclass.constructor.apply(this, arguments);
 539     };
 540
 541     FilePickerHelper.NAME = "FilePickerHelper";
 542     FilePickerHelper.ATTRS = {
 543         options: {},
 544         lang: {}
 545     };
 546
 547     Y.extend(FilePickerHelper, Y.Base, {
 548         api: M.cfg.wwwroot+'/repository/repository_ajax.php',
 549         cached_responses: {},
 550         waitinterval : null, // When the loading template is being displayed and its animation is running this will be an interval instance.
 551         initializer: function(options) {
 552             this.options = options;
 553             if (!this.options.savepath) {
 554                 this.options.savepath = '/';
 555             }
 556         },
 557
 558         destructor: function() {
 559         },
 560
 561         request: function(args, redraw) {
 562             var api = (args.api ? args.api : this.api) + '?action='+args.action;
 563             var params = {};
 564             var scope = args['scope'] ? args['scope'] : this;
 565             params['repo_id']=args.repository_id;
 566             params['p'] = args.path?args.path:'';
 567             params['page'] = args.page?args.page:'';
 568             params['env']=this.options.env;
 569             // the form element only accept certain file types
 570             params['accepted_types']=this.options.accepted_types;
 571             params['sesskey'] = M.cfg.sesskey;
 572             params['client_id'] = args.client_id;
 573             params['itemid'] = this.options.itemid?this.options.itemid:0;
 574             params['maxbytes'] = this.options.maxbytes?this.options.maxbytes:-1;
 575             // The unlimited value of areamaxbytes is -1, it is defined by FILE_AREA_MAX_BYTES_UNLIMITED.
 576             params['areamaxbytes'] = this.options.areamaxbytes ? this.options.areamaxbytes : -1;
 577             if (this.options.context && this.options.context.id) {
 578                 params['ctx_id'] = this.options.context.id;
 579             }
 580             if (args['params']) {
 581                 for (i in args['params']) {
 582                     params[i] = args['params'][i];
 583                 }
 584             }
 585             if (args.action == 'upload') {
 586                 var list = [];
 587                 for(var k in params) {
 588                     var value = params[k];
 589                     if(value instanceof Array) {
 590                         for(var i in value) {
 591                             list.push(k+'[]='+value[i]);
 592                         }
 593                     } else {
 594                         list.push(k+'='+value);
 595                     }
 596                 }
 597                 params = list.join('&');
 598             } else {
 599                 params = build_querystring(params);
 600             }
 601             var cfg = {
 602                 method: 'POST',
 603                 on: {
 604                     complete: function(id,o,p) {
 605                         var data = null;
 606                         try {
 607                             data = Y.JSON.parse(o.responseText);
 608                         } catch(e) {
 609                             if (o && o.status && o.status > 0) {
 610                                 Y.use('moodle-core-notification-exception', function() {
 611                                     return new M.core.exception(e);
 612                                 });
 613                                 return;
 614                             }
 615                         }
 616                         // error checking
 617                         if (data && data.error) {
 618                             Y.use('moodle-core-notification-ajaxexception', function () {
 619                                 return new M.core.ajaxException(data);
 620                             });
 621                             this.fpnode.one('.fp-content').setContent('');
 622                             return;
 623                         } else {
 624                             if (data.msg) {
 625                                 scope.print_msg(data.msg, 'info');
 626                             }
 627                             // cache result if applicable
 628                             if (args.action != 'upload' && data.allowcaching) {
 629                                 scope.cached_responses[params] = data;
 630                             }
 631                             // invoke callback
 632                             args.callback(id,data,p);
 633                         }
 634                     }
 635                 },
 636                 arguments: {
 637                     scope: scope
 638                 },
 639                 headers: {
 640                     'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
 641                 },
 642                 data: params,
 643                 context: this
 644             };
 645             if (args.form) {
 646                 cfg.form = args.form;
 647             }
 648             // check if result of the same request has been already cached. If not, request it
 649             // (never applicable in case of form submission and/or upload action):
 650             if (!args.form && args.action != 'upload' && scope.cached_responses[params]) {
 651                 args.callback(null, scope.cached_responses[params], {scope: scope})
 652             } else {
 653                 Y.io(api, cfg);
 654                 if (redraw) {
 655                     this.wait();
 656                 }
 657             }
 658         },
 659         /** displays the dialog and processes rename/overwrite if there is a file with the same name in the same filearea*/
 660         process_existing_file: function(data) {
 661             var scope = this;
 662             var handleOverwrite = function(e) {
 663                 // overwrite
 664                 e.preventDefault();
 665                 var data = this.process_dlg.dialogdata;
 666                 var params = {}
 667                 params['existingfilename'] = data.existingfile.filename;
 668                 params['existingfilepath'] = data.existingfile.filepath;
 669                 params['newfilename'] = data.newfile.filename;
 670                 params['newfilepath'] = data.newfile.filepath;
 671                 this.hide_header();
 672                 this.request({
 673                     'params': params,
 674                     'scope': this,
 675                     'action':'overwrite',
 676                     'path': '',
 677                     'client_id': this.options.client_id,
 678                     'repository_id': this.active_repo.id,
 679                     'callback': function(id, o, args) {
 680                         scope.hide();
 681                         // Add an arbitrary parameter to the URL to force browsers to re-load the new image even
 682                         // if the file name has not changed.
 683                         var urlimage = data.existingfile.url + "?time=" + (new Date()).getTime();
 684                         if (scope.options.editor_target && scope.options.env == 'editor') {
 685                             // editor needs to update url
 686                             scope.options.editor_target.value = urlimage;
 687                             scope.options.editor_target.onchange();
 688                         }
 689                         var fileinfo = {'client_id':scope.options.client_id,
 690                             'url': urlimage,
 691                             'file': data.existingfile.filename};
 692                         var formcallback_scope = scope.options.magicscope ? scope.options.magicscope : scope;
 693                         scope.options.formcallback.apply(formcallback_scope, [fileinfo]);
 694                     }
 695                 }, true);
 696             }
 697             var handleRename = function(e) {
 698                 // inserts file with the new name
 699                 e.preventDefault();
 700                 var scope = this;
 701                 var data = this.process_dlg.dialogdata;
 702                 if (scope.options.editor_target && scope.options.env == 'editor') {
 703                     scope.options.editor_target.value = data.newfile.url;
 704                     scope.options.editor_target.onchange();
 705                 }
 706                 scope.hide();
 707                 var formcallback_scope = scope.options.magicscope ? scope.options.magicscope : scope;
 708                 var fileinfo = {'client_id':scope.options.client_id,
 709                                 'url':data.newfile.url,
 710                                 'file':data.newfile.filename};
 711                 scope.options.formcallback.apply(formcallback_scope, [fileinfo]);
 712             }
 713             var handleCancel = function(e) {
 714                 // Delete tmp file
 715                 e.preventDefault();
 716                 var params = {};
 717                 params['newfilename'] = this.process_dlg.dialogdata.newfile.filename;
 718                 params['newfilepath'] = this.process_dlg.dialogdata.newfile.filepath;
 719                 this.request({
 720                     'params': params,
 721                     'scope': this,
 722                     'action':'deletetmpfile',
 723                     'path': '',
 724                     'client_id': this.options.client_id,
 725                     'repository_id': this.active_repo.id,
 726                     'callback': function(id, o, args) {
 727                         // let it be in background, from user point of view nothing is happenning
 728                     }
 729                 }, false);
 730                 this.process_dlg.hide();
 731                 this.selectui.hide();
 732             }
 733             if (!this.process_dlg) {
 734                 this.process_dlg_node = Y.Node.create(M.core_filepicker.templates.processexistingfile);
 735                 var node = this.process_dlg_node;
 736                 node.generateID();
 737                 this.process_dlg = new M.core.dialogue({
 738                     draggable    : true,
 739                     bodyContent  : node,
 740                     headerContent: M.util.get_string('fileexistsdialogheader', 'repository'),
 741                     centered     : true,
 742                     modal        : true,
 743                     visible      : false,
 744                     zIndex       : this.options.zIndex
 745                 });
 746                 node.one('.fp-dlg-butoverwrite').on('click', handleOverwrite, this);
 747                 node.one('.fp-dlg-butrename').on('click', handleRename, this);
 748                 node.one('.fp-dlg-butcancel').on('click', handleCancel, this);
 749                 if (this.options.env == 'editor') {
 750                     node.one('.fp-dlg-text').setContent(M.util.get_string('fileexistsdialog_editor', 'repository'));
 751                 } else {
 752                     node.one('.fp-dlg-text').setContent(M.util.get_string('fileexistsdialog_filemanager', 'repository'));
 753                 }
 754             }
 755             this.selectnode.removeClass('loading');
 756             this.process_dlg.dialogdata = data;
 757             this.process_dlg_node.one('.fp-dlg-butrename').setContent(M.util.get_string('renameto', 'repository', data.newfile.filename));
 758             this.process_dlg.show();
 759         },
 760         /** displays error instead of filepicker contents */
 761         display_error: function(errortext, errorcode) {
 762             this.fpnode.one('.fp-content').setContent(M.core_filepicker.templates.error);
 763             this.fpnode.one('.fp-content .fp-error').
 764                 addClass(errorcode).
 765                 setContent(Y.Escape.html(errortext));
 766         },
 767         /** displays message in a popup */
 768         print_msg: function(msg, type) {
 769             var header = M.util.get_string('error', 'moodle');
 770             if (type != 'error') {
 771                 type = 'info'; // one of only two types excepted
 772                 header = M.util.get_string('info', 'moodle');
 773             }
 774             if (!this.msg_dlg) {
 775                 this.msg_dlg_node = Y.Node.create(M.core_filepicker.templates.message);
 776                 this.msg_dlg_node.generateID();
 777
 778                 this.msg_dlg = new M.core.dialogue({
 779                     draggable    : true,
 780                     bodyContent  : this.msg_dlg_node,
 781                     centered     : true,
 782                     modal        : true,
 783                     visible      : false,
 784                     zIndex       : this.options.zIndex
 785                 });
 786                 this.msg_dlg_node.one('.fp-msg-butok').on('click', function(e) {
 787                     e.preventDefault();
 788                     this.msg_dlg.hide();
 789                 }, this);
 790             }
 791
 792             this.msg_dlg.set('headerContent', header);
 793             this.msg_dlg_node.removeClass('fp-msg-info').removeClass('fp-msg-error').addClass('fp-msg-'+type)
 794             this.msg_dlg_node.one('.fp-msg-text').setContent(Y.Escape.html(msg));
 795             this.msg_dlg.show();
 796         },
 797         view_files: function(appenditems) {
 798             this.viewbar_set_enabled(true);
 799             this.print_path();
 800             /*if ((appenditems == null) && (!this.filelist || !this.filelist.length) && !this.active_repo.hasmorepages) {
 801              // TODO do it via classes and adjust for each view mode!
 802                 // If there are no items and no next page, just display status message and quit
 803                 this.display_error(M.util.get_string('nofilesavailable', 'repository'), 'nofilesavailable');
 804                 return;
 805             }*/
 806             if (this.viewmode == 2) {
 807                 this.view_as_list(appenditems);
 808             } else if (this.viewmode == 3) {
 809                 this.view_as_table(appenditems);
 810             } else {
 811                 this.view_as_icons(appenditems);
 812             }
 813             this.fpnode.one('.fp-content').setAttribute('tabindex', '0');
 814             this.fpnode.one('.fp-content').focus();
 815             // display/hide the link for requesting next page
 816             if (!appenditems && this.active_repo.hasmorepages) {
 817                 if (!this.fpnode.one('.fp-content .fp-nextpage')) {
 818                     this.fpnode.one('.fp-content').append(M.core_filepicker.templates.nextpage);
 819                 }
 820                 this.fpnode.one('.fp-content .fp-nextpage').one('a,button').on('click', function(e) {
 821                     e.preventDefault();
 822                     this.fpnode.one('.fp-content .fp-nextpage').addClass('loading');
 823                     this.request_next_page();
 824                 }, this);
 825             }
 826             if (!this.active_repo.hasmorepages && this.fpnode.one('.fp-content .fp-nextpage')) {
 827                 this.fpnode.one('.fp-content .fp-nextpage').remove();
 828             }
 829             if (this.fpnode.one('.fp-content .fp-nextpage')) {
 830                 this.fpnode.one('.fp-content .fp-nextpage').removeClass('loading');
 831             }
 832             this.content_scrolled();
 833         },
 834         content_scrolled: function(e) {
 835             setTimeout(Y.bind(function() {
 836                 if (this.processingimages) {
 837                     return;
 838                 }
 839                 this.processingimages = true;
 840                 var scope = this,
 841                     fpcontent = this.fpnode.one('.fp-content'),
 842                     fpcontenty = fpcontent.getY(),
 843                     fpcontentheight = fpcontent.getStylePx('height'),
 844                     nextpage = fpcontent.one('.fp-nextpage'),
 845                     is_node_visible = function(node) {
 846                         var offset = node.getY()-fpcontenty;
 847                         if (offset <= fpcontentheight && (offset >=0 || offset+node.getStylePx('height')>=0)) {
 848                             return true;
 849                         }
 850                         return false;
 851                     };
 852                 // automatically load next page when 'more' link becomes visible
 853                 if (nextpage && !nextpage.hasClass('loading') && is_node_visible(nextpage)) {
 854                     nextpage.one('a,button').simulate('click');
 855                 }
 856                 // replace src for visible images that need to be lazy-loaded
 857                 if (scope.lazyloading) {
 858                     fpcontent.all('img').each( function(node) {
 859                         if (node.get('id') && scope.lazyloading[node.get('id')] && is_node_visible(node)) {
 860                             node.setImgRealSrc(scope.lazyloading);
 861                         }
 862                     });
 863                 }
 864                 this.processingimages = false;
 865             }, this), 200)
 866         },
 867         treeview_dynload: function(node, cb) {
 868             var retrieved_children = {};
 869             if (node.children) {
 870                 for (var i in node.children) {
 871                     retrieved_children[node.children[i].path] = node.children[i];
 872                 }
 873             }
 874             this.request({
 875                 action:'list',
 876                 client_id: this.options.client_id,
 877                 repository_id: this.active_repo.id,
 878                 path:node.path?node.path:'',
 879                 page:node.page?args.page:'',
 880                 scope:this,
 881                 callback: function(id, obj, args) {
 882                     var list = obj.list;
 883                     var scope = args.scope;
 884                     // check that user did not leave the view mode before recieving this response
 885                     if (!(scope.active_repo.id == obj.repo_id && scope.viewmode == 2 && node && node.getChildrenEl())) {
 886                         return;
 887                     }
 888                     if (cb != null) { // (in manual mode do not update current path)
 889                         scope.viewbar_set_enabled(true);
 890                         scope.parse_repository_options(obj);
 891                     }
 892                     node.highlight(false);
 893                     node.origlist = obj.list ? obj.list : null;
 894                     node.origpath = obj.path ? obj.path : null;
 895                     node.children = [];
 896                     for(k in list) {
 897                         if (list[k].children && retrieved_children[list[k].path]) {
 898                             // if this child is a folder and has already been retrieved
 899                             node.children[node.children.length] = retrieved_children[list[k].path];
 900                         } else {
 901                             // append new file to the list
 902                             scope.view_as_list([list[k]]);
 903                         }
 904                     }
 905                     if (cb == null) {
 906                         node.refresh();
 907                     } else {
 908                         // invoke callback requested by TreeView component
 909                         cb();
 910                     }
 911                     scope.content_scrolled();
 912                 }
 913             }, false);
 914         },
 915        classnamecallback : function(node) {
 916             var classname = '';
 917             if (node.children) {
 918                 classname = classname + ' fp-folder';
 919             }
 920             if (node.isref) {
 921                 classname = classname + ' fp-isreference';
 922             }
 923             if (node.iscontrolledlink) {
 924                 classname = classname + ' fp-iscontrolledlink';
 925             }
 926             if (node.refcount) {
 927                 classname = classname + ' fp-hasreferences';
 928             }
 929             if (node.originalmissing) {
 930                 classname = classname + ' fp-originalmissing';
 931             }
 932             return Y.Lang.trim(classname);
 933         },
 934         /** displays list of files in tree (list) view mode. If param appenditems is specified,
 935          * appends those items to the end of the list. Otherwise (default behaviour)
 936          * clears the contents and displays the items from this.filelist */
 937         view_as_list: function(appenditems) {
 938             var list = (appenditems != null) ? appenditems : this.filelist;
 939             this.viewmode = 2;
 940             if (!this.filelist || this.filelist.length==0 && (!this.filepath || !this.filepath.length)) {
 941                 this.display_error(M.util.get_string('nofilesavailable', 'repository'), 'nofilesavailable');
 942                 return;
 943             }
 944
 945             var element_template = Y.Node.create(M.core_filepicker.templates.listfilename);
 946             var options = {
 947                 viewmode : this.viewmode,
 948                 appendonly : (appenditems != null),
 949                 filenode : element_template,
 950                 callbackcontext : this,
 951                 callback : function(e, node) {
 952                     // TODO MDL-32736 e is not an event here but an object with properties 'event' and 'node'
 953                     if (!node.children) {
 954                         if (e.node.parent && e.node.parent.origpath) {
 955                             // set the current path
 956                             this.filepath = e.node.parent.origpath;
 957                             this.filelist = e.node.parent.origlist;
 958                             this.print_path();
 959                         }
 960                         this.select_file(node);
 961                     } else {
 962                         // save current path and filelist (in case we want to jump to other viewmode)
 963                         this.filepath = e.node.origpath;
 964                         this.filelist = e.node.origlist;
 965                         this.currentpath = e.node.path;
 966                         this.print_path();
 967                         this.content_scrolled();
 968                     }
 969                 },
 970                 classnamecallback : this.classnamecallback,
 971                 dynload : this.active_repo.dynload,
 972                 filepath : this.filepath,
 973                 treeview_dynload : this.treeview_dynload
 974             };
 975             this.fpnode.one('.fp-content').fp_display_filelist(options, list, this.lazyloading);
 976         },
 977         /** displays list of files in icon view mode. If param appenditems is specified,
 978          * appends those items to the end of the list. Otherwise (default behaviour)
 979          * clears the contents and displays the items from this.filelist */
 980         view_as_icons: function(appenditems) {
 981             this.viewmode = 1;
 982             var list = (appenditems != null) ? appenditems : this.filelist;
 983             var element_template = Y.Node.create(M.core_filepicker.templates.iconfilename);
 984             if ((appenditems == null) && (!this.filelist || !this.filelist.length)) {
 985                 this.display_error(M.util.get_string('nofilesavailable', 'repository'), 'nofilesavailable');
 986                 return;
 987             }
 988             var options = {
 989                 viewmode : this.viewmode,
 990                 appendonly : (appenditems != null),
 991                 filenode : element_template,
 992                 callbackcontext : this,
 993                 callback : function(e, node) {
 994                     if (e.preventDefault) {
 995                         e.preventDefault();
 996                     }
 997                     if(node.children) {
 998                         if (this.active_repo.dynload) {
 999                             this.list({'path':node.path});
1000                         } else {
1001                             this.filelist = node.children;
1002                             this.view_files();
1003                         }
1004                     } else {
1005                         this.select_file(node);
1006                     }
1007                 },
1008                 classnamecallback : this.classnamecallback
1009             };
1010             this.fpnode.one('.fp-content').fp_display_filelist(options, list, this.lazyloading);
1011         },
1012         /** displays list of files in table view mode. If param appenditems is specified,
1013          * appends those items to the end of the list. Otherwise (default behaviour)
1014          * clears the contents and displays the items from this.filelist */
1015         view_as_table: function(appenditems) {
1016             this.viewmode = 3;
1017             var list = (appenditems != null) ? appenditems : this.filelist;
1018             if (!appenditems && (!this.filelist || this.filelist.length==0) && !this.active_repo.hasmorepages) {
1019                 this.display_error(M.util.get_string('nofilesavailable', 'repository'), 'nofilesavailable');
1020                 return;
1021             }
1022             var element_template = Y.Node.create(M.core_filepicker.templates.listfilename);
1023             var options = {
1024                 viewmode : this.viewmode,
1025                 appendonly : (appenditems != null),
1026                 filenode : element_template,
1027                 callbackcontext : this,
1028                 sortable : !this.active_repo.hasmorepages,
1029                 callback : function(e, node) {
1030                     if (e.preventDefault) {e.preventDefault();}
1031                     if (node.children) {
1032                         if (this.active_repo.dynload) {
1033                             this.list({'path':node.path});
1034                         } else {
1035                             this.filelist = node.children;
1036                             this.view_files();
1037                         }
1038                     } else {
1039                         this.select_file(node);
1040                     }
1041                 },
1042                 classnamecallback : this.classnamecallback
1043             };
1044             this.fpnode.one('.fp-content').fp_display_filelist(options, list, this.lazyloading);
1045         },
1046         /** If more than one page available, requests and displays the files from the next page */
1047         request_next_page: function() {
1048             if (!this.active_repo.hasmorepages || this.active_repo.nextpagerequested) {
1049                 // nothing to load
1050                 return;
1051             }
1052             this.active_repo.nextpagerequested = true;
1053             var nextpage = this.active_repo.page+1;
1054             var args = {
1055                 page: nextpage,
1056                 repo_id: this.active_repo.id
1057             };
1058             var action = this.active_repo.issearchresult ? 'search' : 'list';
1059             this.request({
1060                 path: this.currentpath,
1061                 scope: this,
1062                 action: action,
1063                 client_id: this.options.client_id,
1064                 repository_id: args.repo_id,
1065                 params: args,
1066                 callback: function(id, obj, args) {
1067                     var scope = args.scope;
1068                     // Check that we are still in the same repository and are expecting this page. We have no way
1069                     // to compare the requested page and the one returned, so we assume that if the last chunk
1070                     // of the breadcrumb is similar, then we probably are on the same page.
1071                     var samepage = true;
1072                     if (obj.path && scope.filepath) {
1073                         var pathbefore = scope.filepath[scope.filepath.length-1];
1074                         var pathafter = obj.path[obj.path.length-1];
1075                         if (pathbefore.path != pathafter.path) {
1076                             samepage = false;
1077                         }
1078                     }
1079                     if (scope.active_repo.hasmorepages && obj.list && obj.page &&
1080                             obj.repo_id == scope.active_repo.id &&
1081                             obj.page == scope.active_repo.page+1 && samepage) {
1082                         scope.parse_repository_options(obj, true);
1083                         scope.view_files(obj.list)
1084                     }
1085                 }
1086             }, false);
1087         },
1088         select_file: function(args) {
1089             var argstitle = args.title;
1090             // Limit the string length so it fits nicely on mobile devices
1091             var titlelength = 30;
1092             if (argstitle.length > titlelength) {
1093                 argstitle = argstitle.substring(0, titlelength) + '...';
1094             }
1095             Y.one('#fp-file_label_'+this.options.client_id).setContent(Y.Escape.html(M.util.get_string('select', 'repository')+' '+argstitle));
1096             this.selectui.show();
1097             Y.one('#'+this.selectnode.get('id')).focus();
1098             var client_id = this.options.client_id;
1099             var selectnode = this.selectnode;
1100             var return_types = this.options.repositories[this.active_repo.id].return_types;
1101             selectnode.removeClass('loading');
1102             selectnode.one('.fp-saveas input').set('value', args.title);
1103
1104             var imgnode = Y.Node.create('<img/>').
1105                 set('src', args.realthumbnail ? args.realthumbnail : args.thumbnail).
1106                 setStyle('maxHeight', ''+(args.thumbnail_height ? args.thumbnail_height : 90)+'px').
1107                 setStyle('maxWidth', ''+(args.thumbnail_width ? args.thumbnail_width : 90)+'px');
1108             selectnode.one('.fp-thumbnail').setContent('').appendChild(imgnode);
1109
1110             // filelink is the array of file-link-types available for this repository in this env
1111             var filelinktypes = [2/*FILE_INTERNAL*/,1/*FILE_EXTERNAL*/,4/*FILE_REFERENCE*/,8/*FILE_CONTROLLED_LINK*/];
1112             var filelink = {}, firstfilelink = null, filelinkcount = 0;
1113             for (var i in filelinktypes) {
1114                 var allowed = (return_types & filelinktypes[i]) &&
1115                     (this.options.return_types & filelinktypes[i]);
1116                 if (filelinktypes[i] == 1/*FILE_EXTERNAL*/ && !this.options.externallink && this.options.env == 'editor') {
1117                     // special configuration setting 'repositoryallowexternallinks' may prevent
1118                     // using external links in editor environment
1119                     allowed = false;
1120                 }
1121                 filelink[filelinktypes[i]] = allowed;
1122                 firstfilelink = (firstfilelink==null && allowed) ? filelinktypes[i] : firstfilelink;
1123                 filelinkcount += allowed ? 1 : 0;
1124             }
1125             var defaultreturntype = this.options.repositories[this.active_repo.id].defaultreturntype;
1126             if (defaultreturntype) {
1127                 if (filelink[defaultreturntype]) {
1128                     firstfilelink = defaultreturntype;
1129                 }
1130             }
1131             // make radio buttons enabled if this file-link-type is available and only if there are more than one file-link-type option
1132             // check the first available file-link-type option
1133             for (var linktype in filelink) {
1134                 var el = selectnode.one('.fp-linktype-'+linktype);
1135                 el.addClassIf('uneditable', !(filelink[linktype] && filelinkcount>1));
1136                 el.one('input').set('checked', (firstfilelink == linktype) ? 'checked' : '').simulate('change');
1137             }
1138
1139             // TODO MDL-32532: attributes 'hasauthor' and 'haslicense' need to be obsolete,
1140             selectnode.one('.fp-setauthor input').set('value', args.author ? args.author : this.options.author);
1141             this.set_selected_license(selectnode.one('.fp-setlicense'), args.license);
1142             selectnode.one('form #filesource-'+client_id).set('value', args.source);
1143             selectnode.one('form #filesourcekey-'+client_id).set('value', args.sourcekey);
1144
1145             // display static information about a file (when known)
1146             var attrs = ['datemodified','datecreated','size','license','author','dimensions'];
1147             for (var i in attrs) {
1148                 if (selectnode.one('.fp-'+attrs[i])) {
1149                     var value = (args[attrs[i]+'_f']) ? args[attrs[i]+'_f'] : (args[attrs[i]] ? args[attrs[i]] : '');
1150                     selectnode.one('.fp-'+attrs[i]).addClassIf('fp-unknown', ''+value == '')
1151                         .one('.fp-value').setContent(Y.Escape.html(value));
1152                 }
1153             }
1154         },
1155         setup_select_file: function() {
1156             var client_id = this.options.client_id;
1157             var selectnode = this.selectnode;
1158             var getfile = selectnode.one('.fp-select-confirm');
1159             // bind labels with corresponding inputs
1160             selectnode.all('.fp-saveas,.fp-linktype-2,.fp-linktype-1,.fp-linktype-4,fp-linktype-8,.fp-setauthor,.fp-setlicense').each(function (node) {
1161                 node.all('label').set('for', node.one('input,select').generateID());
1162             });
1163             selectnode.one('.fp-linktype-2 input').setAttrs({value: 2, name: 'linktype'});
1164             selectnode.one('.fp-linktype-1 input').setAttrs({value: 1, name: 'linktype'});
1165             selectnode.one('.fp-linktype-4 input').setAttrs({value: 4, name: 'linktype'});
1166             selectnode.one('.fp-linktype-8 input').setAttrs({value: 8, name: 'linktype'});
1167             var changelinktype = function(e) {
1168                 if (e.currentTarget.get('checked')) {
1169                     var allowinputs = e.currentTarget.get('value') != 1/*FILE_EXTERNAL*/;
1170                     selectnode.all('.fp-setauthor,.fp-setlicense,.fp-saveas').each(function(node){
1171                         node.addClassIf('uneditable', !allowinputs);
1172                         node.all('input,select').set('disabled', allowinputs?'':'disabled');
1173                     });
1174                 }
1175             };
1176             selectnode.all('.fp-linktype-2,.fp-linktype-1,.fp-linktype-4,.fp-linktype-8').each(function (node) {
1177                 node.one('input').on('change', changelinktype, this);
1178             });
1179             this.populate_licenses_select(selectnode.one('.fp-setlicense select'));
1180             // register event on clicking submit button
1181             getfile.on('click', function(e) {
1182                 e.preventDefault();
1183                 var client_id = this.options.client_id;
1184                 var scope = this;
1185                 var repository_id = this.active_repo.id;
1186                 var title = selectnode.one('.fp-saveas input').get('value');
1187                 var filesource = selectnode.one('form #filesource-'+client_id).get('value');
1188                 var filesourcekey = selectnode.one('form #filesourcekey-'+client_id).get('value');
1189                 var params = {'title':title, 'source':filesource, 'savepath': this.options.savepath, sourcekey: filesourcekey};
1190                 var license = selectnode.one('.fp-setlicense select');
1191                 if (license) {
1192                     params['license'] = license.get('value');
1193                     var origlicense = selectnode.one('.fp-license .fp-value');
1194                     if (origlicense) {
1195                         origlicense = origlicense.getContent();
1196                     }
1197                     this.set_preference('recentlicense', license.get('value'));
1198                 }
1199                 params['author'] = selectnode.one('.fp-setauthor input').get('value');
1200
1201                 var return_types = this.options.repositories[this.active_repo.id].return_types;
1202                 if (this.options.env == 'editor') {
1203                     // in editor, images are stored in '/' only
1204                     params.savepath = '/';
1205                 }
1206                 if ((this.options.externallink || this.options.env != 'editor') &&
1207                             (return_types & 1/*FILE_EXTERNAL*/) &&
1208                             (this.options.return_types & 1/*FILE_EXTERNAL*/) &&
1209                             selectnode.one('.fp-linktype-1 input').get('checked')) {
1210                     params['linkexternal'] = 'yes';
1211                 } else if ((return_types & 4/*FILE_REFERENCE*/) &&
1212                         (this.options.return_types & 4/*FILE_REFERENCE*/) &&
1213                         selectnode.one('.fp-linktype-4 input').get('checked')) {
1214                     params['usefilereference'] = '1';
1215                 } else if ((return_types & 8/*FILE_CONTROLLED_LINK*/) &&
1216                         (this.options.return_types & 8/*FILE_CONTROLLED_LINK*/) &&
1217                         selectnode.one('.fp-linktype-8 input').get('checked')) {
1218                     params['usecontrolledlink'] = '1';
1219                 }
1220
1221                 selectnode.addClass('loading');
1222                 this.request({
1223                     action:'download',
1224                     client_id: client_id,
1225                     repository_id: repository_id,
1226                     'params': params,
1227                     onerror: function(id, obj, args) {
1228                         selectnode.removeClass('loading');
1229                         scope.selectui.hide();
1230                     },
1231                     callback: function(id, obj, args) {
1232                         selectnode.removeClass('loading');
1233                         if (obj.event == 'fileexists') {
1234                             scope.process_existing_file(obj);
1235                             return;
1236                         }
1237                         if (scope.options.editor_target && scope.options.env=='editor') {
1238                             scope.options.editor_target.value=obj.url;
1239                             scope.options.editor_target.onchange();
1240                         }
1241                         scope.hide();
1242                         obj.client_id = client_id;
1243                         var formcallback_scope = args.scope.options.magicscope ? args.scope.options.magicscope : args.scope;
1244                         scope.options.formcallback.apply(formcallback_scope, [obj]);
1245                     }
1246                 }, false);
1247             }, this);
1248             var elform = selectnode.one('form');
1249             elform.appendChild(Y.Node.create('<input/>').
1250                 setAttrs({type:'hidden',id:'filesource-'+client_id}));
1251             elform.appendChild(Y.Node.create('<input/>').
1252                 setAttrs({type:'hidden',id:'filesourcekey-'+client_id}));
1253             elform.on('keydown', function(e) {
1254                 if (e.keyCode == 13) {
1255                     getfile.simulate('click');
1256                     e.preventDefault();
1257                 }
1258             }, this);
1259             var cancel = selectnode.one('.fp-select-cancel');
1260             cancel.on('click', function(e) {
1261                 e.preventDefault();
1262                 this.selectui.hide();
1263             }, this);
1264         },
1265         wait: function() {
1266             // First check there isn't already an interval in play, and if there is kill it now.
1267             if (this.waitinterval != null) {
1268                 clearInterval(this.waitinterval);
1269             }
1270             // Prepare the root node we will set content for and the loading template we want to display as a YUI node.
1271             var root = this.fpnode.one('.fp-content');
1272             var content = Y.Node.create(M.core_filepicker.templates.loading).addClass('fp-content-hidden').setStyle('opacity', 0);
1273             var count = 0;
1274             // Initiate an interval, we will have a count which will increment every 100 milliseconds.
1275             // Count 0 - the loading icon will have visibility set to hidden (invisible) and have an opacity of 0 (invisible also)
1276             // Count 5 - the visiblity will be switched to visible but opacity will still be at 0 (inivisible)
1277             // Counts 6 - 15 opacity will be increased by 0.1 making the loading icon visible over the period of a second
1278             // Count 16 - The interval will be cancelled.
1279             var interval = setInterval(function(){
1280                 if (!content || !root.contains(content) || count >= 15) {
1281                     clearInterval(interval);
1282                     return true;
1283                 }
1284                 if (count == 5) {
1285                     content.removeClass('fp-content-hidden');
1286                 } else if (count > 5) {
1287                     var opacity = parseFloat(content.getStyle('opacity'));
1288                     content.setStyle('opacity', opacity + 0.1);
1289                 }
1290                 count++;
1291                 return false;
1292             }, 100);
1293             // Store the wait interval so that we can check it in the future.
1294             this.waitinterval = interval;
1295             // Set the content to the loading template.
1296             root.setContent(content);
1297         },
1298         viewbar_set_enabled: function(mode) {
1299             var viewbar = this.fpnode.one('.fp-viewbar')
1300             if (viewbar) {
1301                 if (mode) {
1302                     viewbar.addClass('enabled').removeClass('disabled');
1303                     this.fpnode.all('.fp-vb-icons,.fp-vb-tree,.fp-vb-details').setAttribute("aria-disabled", "false");
1304                     this.fpnode.all('.fp-vb-icons,.fp-vb-tree,.fp-vb-details').setAttribute("tabindex", "");
1305                 } else {
1306                     viewbar.removeClass('enabled').addClass('disabled');
1307                     this.fpnode.all('.fp-vb-icons,.fp-vb-tree,.fp-vb-details').setAttribute("aria-disabled", "true");
1308                     this.fpnode.all('.fp-vb-icons,.fp-vb-tree,.fp-vb-details').setAttribute("tabindex", "-1");
1309                 }
1310             }
1311             this.fpnode.all('.fp-vb-icons,.fp-vb-tree,.fp-vb-details').removeClass('checked');
1312             var modes = {1:'icons', 2:'tree', 3:'details'};
1313             this.fpnode.all('.fp-vb-'+modes[this.viewmode]).addClass('checked');
1314         },
1315         viewbar_clicked: function(e) {
1316             e.preventDefault();
1317             var viewbar = this.fpnode.one('.fp-viewbar')
1318             if (!viewbar || !viewbar.hasClass('disabled')) {
1319                 if (e.currentTarget.hasClass('fp-vb-tree')) {
1320                     this.viewmode = 2;
1321                 } else if (e.currentTarget.hasClass('fp-vb-details')) {
1322                     this.viewmode = 3;
1323                 } else {
1324                     this.viewmode = 1;
1325                 }
1326                 this.viewbar_set_enabled(true)
1327                 this.view_files();
1328                 this.set_preference('recentviewmode', this.viewmode);
1329             }
1330         },
1331         render: function() {
1332             var client_id = this.options.client_id;
1333             var fpid = "filepicker-"+ client_id;
1334             var labelid = 'fp-dialog-label_'+ client_id;
1335             var width = 873;
1336             var draggable = true;
1337             this.fpnode = Y.Node.create(M.core_filepicker.templates.generallayout).
1338                 set('id', 'filepicker-'+client_id).set('aria-labelledby', labelid);
1339
1340             if (this.in_iframe()) {
1341                 width = Math.floor(window.innerWidth * 0.95);
1342                 draggable = false;
1343             }
1344
1345             this.mainui = new M.core.dialogue({
1346                 extraClasses : ['filepicker'],
1347                 draggable    : draggable,
1348                 bodyContent  : this.fpnode,
1349                 headerContent: '<h3 id="'+ labelid +'">'+ M.util.get_string('filepicker', 'repository') +'</h3>',
1350                 centered     : true,
1351                 modal        : true,
1352                 visible      : false,
1353                 width        : width+'px',
1354                 responsiveWidth : 768,
1355                 height       : '558px',
1356                 zIndex       : this.options.zIndex
1357             });
1358
1359             // create panel for selecting a file (initially hidden)
1360             this.selectnode = Y.Node.create(M.core_filepicker.templates.selectlayout).
1361                 set('id', 'filepicker-select-'+client_id).
1362                 set('aria-live', 'assertive').
1363                 set('role', 'dialog');
1364
1365             var fplabel = 'fp-file_label_'+ client_id;
1366             this.selectui = new M.core.dialogue({
1367                 headerContent: '<h3 id="' + fplabel +'">'+M.util.get_string('select', 'repository')+'</h3>',
1368                 draggable    : true,
1369                 width        : '450px',
1370                 bodyContent  : this.selectnode,
1371                 centered     : true,
1372                 modal        : true,
1373                 visible      : false,
1374                 zIndex       : this.options.zIndex
1375             });
1376             Y.one('#'+this.selectnode.get('id')).setAttribute('aria-labelledby', fplabel);
1377             // event handler for lazy loading of thumbnails and next page
1378             this.fpnode.one('.fp-content').on(['scroll','resize'], this.content_scrolled, this);
1379             // save template for one path element and location of path bar
1380             if (this.fpnode.one('.fp-path-folder')) {
1381                 this.pathnode = this.fpnode.one('.fp-path-folder');
1382                 this.pathbar = this.pathnode.get('parentNode');
1383                 this.pathbar.removeChild(this.pathnode);
1384             }
1385             // assign callbacks for view mode switch buttons
1386             this.fpnode.one('.fp-vb-icons').on('click', this.viewbar_clicked, this);
1387             this.fpnode.one('.fp-vb-tree').on('click', this.viewbar_clicked, this);
1388             this.fpnode.one('.fp-vb-details').on('click', this.viewbar_clicked, this);
1389
1390             // assign callbacks for toolbar links
1391             this.setup_toolbar();
1392             this.setup_select_file();
1393             this.hide_header();
1394
1395             // processing repository listing
1396             // Resort the repositories by sortorder
1397             var sorted_repositories = [];
1398             var i;
1399             for (i in this.options.repositories) {
1400                 sorted_repositories[i] = this.options.repositories[i];
1401             }
1402             sorted_repositories.sort(function(a,b){return a.sortorder-b.sortorder});
1403             // extract one repository template and repeat it for all repositories available,
1404             // set name and icon and assign callbacks
1405             var reponode = this.fpnode.one('.fp-repo');
1406             if (reponode) {
1407                 var list = reponode.get('parentNode');
1408                 list.removeChild(reponode);
1409                 for (i in sorted_repositories) {
1410                     var repository = sorted_repositories[i];
1411                     var h = (parseInt(i) == 0) ? parseInt(i) : parseInt(i) - 1,
1412                         j = (parseInt(i) == Object.keys(sorted_repositories).length - 1) ? parseInt(i) : parseInt(i) + 1;
1413                     var previousrepository = sorted_repositories[h];
1414                     var nextrepository = sorted_repositories[j];
1415                     var node = reponode.cloneNode(true);
1416                     list.appendChild(node);
1417                     node.
1418                         set('id', 'fp-repo-'+client_id+'-'+repository.id).
1419                         on('click', function(e, repository_id) {
1420                             e.preventDefault();
1421                             this.set_preference('recentrepository', repository_id);
1422                             this.hide_header();
1423                             this.list({'repo_id':repository_id});
1424                         }, this /*handler running scope*/, repository.id/*second argument of handler*/);
1425                     node.on('key', function(e, previousrepositoryid, nextrepositoryid, clientid, repositoryid) {
1426                         this.changeHighlightedRepository(e, clientid, repositoryid, previousrepositoryid, nextrepositoryid);
1427                     }, 'down:38,40', this, previousrepository.id, nextrepository.id, client_id, repository.id);
1428                     node.on('key', function(e, repositoryid) {
1429                         e.preventDefault();
1430                         this.set_preference('recentrepository', repositoryid);
1431                         this.hide_header();
1432                         this.list({'repo_id': repositoryid});
1433                     }, 'enter', this, repository.id);
1434                     node.one('.fp-repo-name').setContent(Y.Escape.html(repository.name));
1435                     node.one('.fp-repo-icon').set('src', repository.icon);
1436                     if (i==0) {
1437                         node.addClass('first');
1438                     }
1439                     if (i==sorted_repositories.length-1) {
1440                         node.addClass('last');
1441                     }
1442                     if (i%2) {
1443                         node.addClass('even');
1444                     } else {
1445                         node.addClass('odd');
1446                     }
1447                 }
1448             }
1449             // display error if no repositories found
1450             if (sorted_repositories.length==0) {
1451                 this.display_error(M.util.get_string('norepositoriesavailable', 'repository'), 'norepositoriesavailable')
1452             }
1453             // display repository that was used last time
1454             this.mainui.show();
1455             this.show_recent_repository();
1456         },
1457         /**
1458          * Change the highlighted repository to a new one.
1459          *
1460          * @param  {object} event The key event
1461          * @param  {integer} clientid The client id to identify the repo class.
1462          * @param  {integer} oldrepositoryid The repository id that we are removing the highlight for
1463          * @param  {integer} previousrepositoryid The previous repository id.
1464          * @param  {integer} nextrepositoryid The next repository id.
1465          */
1466         changeHighlightedRepository: function(event, clientid, oldrepositoryid, previousrepositoryid, nextrepositoryid) {
1467             event.preventDefault();
1468             var newrepositoryid = (event.keyCode == '40') ? nextrepositoryid : previousrepositoryid;
1469             this.fpnode.one('#fp-repo-' + clientid + '-' + oldrepositoryid).setAttribute('tabindex', '-1');
1470             this.fpnode.one('#fp-repo-' + clientid + '-' + newrepositoryid)
1471                     .setAttribute('tabindex', '0')
1472                     .focus();
1473         },
1474         parse_repository_options: function(data, appendtolist) {
1475             if (appendtolist) {
1476                 if (data.list) {
1477                     if (!this.filelist) {
1478                         this.filelist = [];
1479                     }
1480                     for (var i in data.list) {
1481                         this.filelist[this.filelist.length] = data.list[i];
1482                     }
1483                 }
1484             } else {
1485                 this.filelist = data.list?data.list:null;
1486                 this.lazyloading = {};
1487             }
1488             this.filepath = data.path?data.path:null;
1489             this.objecttag = data.object?data.object:null;
1490             this.active_repo = {};
1491             this.active_repo.issearchresult = data.issearchresult ? true : false;
1492             this.active_repo.defaultreturntype = data.defaultreturntype?data.defaultreturntype:null;
1493             this.active_repo.dynload = data.dynload?data.dynload:false;
1494             this.active_repo.pages = Number(data.pages?data.pages:null);
1495             this.active_repo.page = Number(data.page?data.page:null);
1496             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))
1497             this.active_repo.id = data.repo_id?data.repo_id:null;
1498             this.active_repo.nosearch = (data.login || data.nosearch); // this is either login form or 'nosearch' attribute set
1499             this.active_repo.norefresh = (data.login || data.norefresh); // this is either login form or 'norefresh' attribute set
1500             this.active_repo.nologin = (data.login || data.nologin); // this is either login form or 'nologin' attribute is set
1501             this.active_repo.logouttext = data.logouttext?data.logouttext:null;
1502             this.active_repo.logouturl = (data.logouturl || '');
1503             this.active_repo.message = (data.message || '');
1504             this.active_repo.help = data.help?data.help:null;
1505             this.active_repo.manage = data.manage?data.manage:null;
1506             this.print_header();
1507         },
1508         print_login: function(data) {
1509             this.parse_repository_options(data);
1510             var client_id = this.options.client_id;
1511             var repository_id = data.repo_id;
1512             var l = this.logindata = data.login;
1513             var loginurl = '';
1514             var action = data['login_btn_action'] ? data['login_btn_action'] : 'login';
1515             var form_id = 'fp-form-'+client_id;
1516
1517             var loginform_node = Y.Node.create(M.core_filepicker.templates.loginform);
1518             loginform_node.one('form').set('id', form_id);
1519             this.fpnode.one('.fp-content').setContent('').appendChild(loginform_node);
1520             var templates = {
1521                 'popup' : loginform_node.one('.fp-login-popup'),
1522                 'textarea' : loginform_node.one('.fp-login-textarea'),
1523                 'select' : loginform_node.one('.fp-login-select'),
1524                 'text' : loginform_node.one('.fp-login-text'),
1525                 'radio' : loginform_node.one('.fp-login-radiogroup'),
1526                 'checkbox' : loginform_node.one('.fp-login-checkbox'),
1527                 'input' : loginform_node.one('.fp-login-input')
1528             };
1529             var container;
1530             for (var i in templates) {
1531                 if (templates[i]) {
1532                     container = templates[i].get('parentNode');
1533                     container.removeChild(templates[i]);
1534                 }
1535             }
1536
1537             for(var k in l) {
1538                 if (templates[l[k].type]) {
1539                     var node = templates[l[k].type].cloneNode(true);
1540                 } else {
1541                     node = templates['input'].cloneNode(true);
1542                 }
1543                 if (l[k].type == 'popup') {
1544                     // submit button
1545                     loginurl = l[k].url;
1546                     var popupbutton = node.one('button');
1547                     popupbutton.on('click', function(e){
1548                         M.core_filepicker.active_filepicker = this;
1549                         window.open(loginurl, 'repo_auth', 'location=0,status=0,width=500,height=300,scrollbars=yes');
1550                         e.preventDefault();
1551                     }, this);
1552                     loginform_node.one('form').on('keydown', function(e) {
1553                         if (e.keyCode == 13) {
1554                             popupbutton.simulate('click');
1555                             e.preventDefault();
1556                         }
1557                     }, this);
1558                     loginform_node.all('.fp-login-submit').remove();
1559                     action = 'popup';
1560                 } else if(l[k].type=='textarea') {
1561                     // textarea element
1562                     if (node.one('label')) {
1563                         node.one('label').set('for', l[k].id).setContent(l[k].label);
1564                     }
1565                     node.one('textarea').setAttrs({id:l[k].id, name:l[k].name});
1566                 } else if(l[k].type=='select') {
1567                     // select element
1568                     if (node.one('label')) {
1569                         node.one('label').set('for', l[k].id).setContent(l[k].label);
1570                     }
1571                     node.one('select').setAttrs({id:l[k].id, name:l[k].name}).setContent('');
1572                     for (i in l[k].options) {
1573                         node.one('select').appendChild(
1574                             Y.Node.create('<option/>').
1575                                 set('value', l[k].options[i].value).
1576                                 setContent(l[k].options[i].label));
1577                     }
1578                 } else if(l[k].type=='radio') {
1579                     // radio input element
1580                     node.all('label').setContent(l[k].label);
1581                     var list = l[k].value.split('|');
1582                     var labels = l[k].value_label.split('|');
1583                     var radionode = null;
1584                     for(var item in list) {
1585                         if (radionode == null) {
1586                             radionode = node.one('.fp-login-radio');
1587                             radionode.one('input').set('checked', 'checked');
1588                         } else {
1589                             var x = radionode.cloneNode(true);
1590                             radionode.insert(x, 'after');
1591                             radionode = x;
1592                             radionode.one('input').set('checked', '');
1593                         }
1594                         radionode.one('input').setAttrs({id:''+l[k].id+item, name:l[k].name,
1595                             type:l[k].type, value:list[item]});
1596                         radionode.all('label').setContent(labels[item]).set('for', ''+l[k].id+item)
1597                     }
1598                     if (radionode == null) {
1599                         node.one('.fp-login-radio').remove();
1600                     }
1601                 } else {
1602                     // input element
1603                     if (node.one('label')) { node.one('label').set('for', l[k].id).setContent(l[k].label) }
1604                     node.one('input').
1605                         set('type', l[k].type).
1606                         set('id', l[k].id).
1607                         set('name', l[k].name).
1608                         set('value', l[k].value?l[k].value:'')
1609                 }
1610                 container.appendChild(node);
1611             }
1612             // custom label text for submit button
1613             if (data['login_btn_label']) {
1614                 loginform_node.all('.fp-login-submit').setContent(data['login_btn_label'])
1615             }
1616             // register button action for login and search
1617             if (action == 'login' || action == 'search') {
1618                 loginform_node.one('.fp-login-submit').on('click', function(e){
1619                     e.preventDefault();
1620                     this.hide_header();
1621                     this.request({
1622                         'scope': this,
1623                         'action':(action == 'search') ? 'search' : 'signin',
1624                         'path': '',
1625                         'client_id': client_id,
1626                         'repository_id': repository_id,
1627                         'form': {id:form_id, upload:false, useDisabled:true},
1628                         'callback': this.display_response
1629                     }, true);
1630                 }, this);
1631             }
1632             // if 'Enter' is pressed in the form, simulate the button click
1633             if (loginform_node.one('.fp-login-submit')) {
1634                 loginform_node.one('form').on('keydown', function(e) {
1635                     if (e.keyCode == 13) {
1636                         loginform_node.one('.fp-login-submit').simulate('click')
1637                         e.preventDefault();
1638                     }
1639                 }, this);
1640             }
1641         },
1642         display_response: function(id, obj, args) {
1643             var scope = args.scope;
1644             // highlight the current repository in repositories list
1645             scope.fpnode.all('.fp-repo.active')
1646                     .removeClass('active')
1647                     .setAttribute('aria-selected', 'false')
1648                     .setAttribute('tabindex', '-1');
1649             scope.fpnode.all('.nav-link')
1650                     .removeClass('active')
1651                     .setAttribute('aria-selected', 'false')
1652                     .setAttribute('tabindex', '-1');
1653             var activenode = scope.fpnode.one('#fp-repo-' + scope.options.client_id + '-' + obj.repo_id);
1654             activenode.addClass('active')
1655                     .setAttribute('aria-selected', 'true')
1656                     .setAttribute('tabindex', '0');
1657             activenode.all('.nav-link').addClass('active');
1658             // add class repository_REPTYPE to the filepicker (for repository-specific styles)
1659             for (var i in scope.options.repositories) {
1660                 scope.fpnode.removeClass('repository_'+scope.options.repositories[i].type)
1661             }
1662             if (obj.repo_id && scope.options.repositories[obj.repo_id]) {
1663                 scope.fpnode.addClass('repository_'+scope.options.repositories[obj.repo_id].type)
1664             }
1665             Y.one('.file-picker .fp-repo-items').focus();
1666
1667             // display response
1668             if (obj.login) {
1669                 scope.viewbar_set_enabled(false);
1670                 scope.print_login(obj);
1671             } else if (obj.upload) {
1672                 scope.viewbar_set_enabled(false);
1673                 scope.parse_repository_options(obj);
1674                 scope.create_upload_form(obj);
1675             } else if (obj.object) {
1676                 M.core_filepicker.active_filepicker = scope;
1677                 scope.viewbar_set_enabled(false);
1678                 scope.parse_repository_options(obj);
1679                 scope.create_object_container(obj.object);
1680             } else if (obj.list) {
1681                 scope.viewbar_set_enabled(true);
1682                 scope.parse_repository_options(obj);
1683                 scope.view_files();
1684             }
1685         },
1686         list: function(args) {
1687             if (!args) {
1688                 args = {};
1689             }
1690             if (!args.repo_id) {
1691                 args.repo_id = this.active_repo.id;
1692             }
1693             if (!args.path) {
1694                 args.path = '';
1695             }
1696             this.currentpath = args.path;
1697             this.request({
1698                 action: 'list',
1699                 client_id: this.options.client_id,
1700                 repository_id: args.repo_id,
1701                 path: args.path,
1702                 page: args.page,
1703                 scope: this,
1704                 callback: this.display_response
1705             }, true);
1706         },
1707         populate_licenses_select: function(node) {
1708             if (!node) {
1709                 return;
1710             }
1711             node.setContent('');
1712             var licenses = this.options.licenses;
1713             var recentlicense = this.get_preference('recentlicense');
1714             if (recentlicense) {
1715                 this.options.defaultlicense=recentlicense;
1716             }
1717             for (var i in licenses) {
1718                 var option = Y.Node.create('<option/>').
1719                     set('selected', (this.options.defaultlicense==licenses[i].shortname)).
1720                     set('value', licenses[i].shortname).
1721                     setContent(Y.Escape.html(licenses[i].fullname));
1722                 node.appendChild(option)
1723             }
1724         },
1725         set_selected_license: function(node, value) {
1726             var licenseset = false;
1727             node.all('option').each(function(el) {
1728                 if (el.get('value')==value || el.getContent()==value) {
1729                     el.set('selected', true);
1730                     licenseset = true;
1731                 }
1732             });
1733             if (!licenseset) {
1734                 // we did not find the value in the list
1735                 var recentlicense = this.get_preference('recentlicense');
1736                 node.all('option[selected]').set('selected', false);
1737                 node.all('option[value='+recentlicense+']').set('selected', true);
1738             }
1739         },
1740         create_object_container: function(data) {
1741             var content = this.fpnode.one('.fp-content');
1742             content.setContent('');
1743             //var str = '<object data="'+data.src+'" type="'+data.type+'" width="98%" height="98%" id="container_object" class="fp-object-container mdl-align"></object>';
1744             var container = Y.Node.create('<object/>').
1745                 setAttrs({data:data.src, type:data.type, id:'container_object'}).
1746                 addClass('fp-object-container');
1747             content.setContent('').appendChild(container);
1748         },
1749         create_upload_form: function(data) {
1750             var client_id = this.options.client_id;
1751             var id = data.upload.id+'_'+client_id;
1752             var content = this.fpnode.one('.fp-content');
1753             var template_name = 'uploadform_'+this.options.repositories[data.repo_id].type;
1754             var template = M.core_filepicker.templates[template_name] || M.core_filepicker.templates['uploadform'];
1755             content.setContent(template);
1756
1757             content.all('.fp-file,.fp-saveas,.fp-setauthor,.fp-setlicense').each(function (node) {
1758                 node.all('label').set('for', node.one('input,select').generateID());
1759             });
1760             content.one('form').set('id', id);
1761             content.one('.fp-file input').set('name', 'repo_upload_file');
1762             if (data.upload.label && content.one('.fp-file label')) {
1763                 content.one('.fp-file label').setContent(data.upload.label);
1764             }
1765             content.one('.fp-saveas input').set('name', 'title');
1766             content.one('.fp-setauthor input').setAttrs({name:'author', value:this.options.author});
1767             content.one('.fp-setlicense select').set('name', 'license');
1768             this.populate_licenses_select(content.one('.fp-setlicense select'))
1769             // append hidden inputs to the upload form
1770             content.one('form').appendChild(Y.Node.create('<input/>').
1771                 setAttrs({type:'hidden',name:'itemid',value:this.options.itemid}));
1772             var types = this.options.accepted_types;
1773             for (var i in types) {
1774                 content.one('form').appendChild(Y.Node.create('<input/>').
1775                     setAttrs({type:'hidden',name:'accepted_types[]',value:types[i]}));
1776             }
1777
1778             var scope = this;
1779             content.one('.fp-upload-btn').on('click', function(e) {
1780                 e.preventDefault();
1781                 var license = content.one('.fp-setlicense select');
1782
1783                 this.set_preference('recentlicense', license.get('value'));
1784                 if (!content.one('.fp-file input').get('value')) {
1785                     scope.print_msg(M.util.get_string('nofilesattached', 'repository'), 'error');
1786                     return false;
1787                 }
1788                 this.hide_header();
1789                 scope.request({
1790                         scope: scope,
1791                         action:'upload',
1792                         client_id: client_id,
1793                         params: {'savepath':scope.options.savepath},
1794                         repository_id: scope.active_repo.id,
1795                         form: {id: id, upload:true},
1796                         onerror: function(id, o, args) {
1797                             scope.create_upload_form(data);
1798                         },
1799                         callback: function(id, o, args) {
1800                             if (o.event == 'fileexists') {
1801                                 scope.create_upload_form(data);
1802                                 scope.process_existing_file(o);
1803                                 return;
1804                             }
1805                             if (scope.options.editor_target&&scope.options.env=='editor') {
1806                                 scope.options.editor_target.value=o.url;
1807                                 scope.options.editor_target.onchange();
1808                             }
1809                             scope.hide();
1810                             o.client_id = client_id;
1811                             var formcallback_scope = args.scope.options.magicscope ? args.scope.options.magicscope : args.scope;
1812                             scope.options.formcallback.apply(formcallback_scope, [o]);
1813                         }
1814                 }, true);
1815             }, this);
1816         },
1817         /** setting handlers and labels for elements in toolbar. Called once during the initial render of filepicker */
1818         setup_toolbar: function() {
1819             var client_id = this.options.client_id;
1820             var toolbar = this.fpnode.one('.fp-toolbar');
1821             toolbar.one('.fp-tb-logout').one('a,button').on('click', function(e) {
1822                 e.preventDefault();
1823                 if (!this.active_repo.nologin) {
1824                     this.hide_header();
1825                     this.request({
1826                         action:'logout',
1827                         client_id: this.options.client_id,
1828                         repository_id: this.active_repo.id,
1829                         path:'',
1830                         callback: this.display_response
1831                     }, true);
1832                 }
1833                 if (this.active_repo.logouturl) {
1834                     window.open(this.active_repo.logouturl, 'repo_auth', 'location=0,status=0,width=500,height=300,scrollbars=yes');
1835                 }
1836             }, this);
1837             toolbar.one('.fp-tb-refresh').one('a,button').on('click', function(e) {
1838                 e.preventDefault();
1839                 if (!this.active_repo.norefresh) {
1840                     this.list({ path: this.currentpath });
1841                 }
1842             }, this);
1843             toolbar.one('.fp-tb-search form').
1844                 set('method', 'POST').
1845                 set('id', 'fp-tb-search-'+client_id).
1846                 on('submit', function(e) {
1847                     e.preventDefault();
1848                     if (!this.active_repo.nosearch) {
1849                         this.request({
1850                             scope: this,
1851                             action:'search',
1852                             client_id: this.options.client_id,
1853                             repository_id: this.active_repo.id,
1854                             form: {id: 'fp-tb-search-'+client_id, upload:false, useDisabled:true},
1855                             callback: this.display_response
1856                         }, true);
1857                     }
1858             }, this);
1859
1860             // it does not matter what kind of element is .fp-tb-manage, we create a dummy <a>
1861             // element and use it to open url on click event
1862             var managelnk = Y.Node.create('<a/>').
1863                 setAttrs({id:'fp-tb-manage-'+client_id+'-link', target:'_blank'}).
1864                 setStyle('display', 'none');
1865             toolbar.append(managelnk);
1866             toolbar.one('.fp-tb-manage').one('a,button').
1867                 on('click', function(e) {
1868                     e.preventDefault();
1869                     managelnk.simulate('click')
1870                 });
1871
1872             // same with .fp-tb-help
1873             var helplnk = Y.Node.create('<a/>').
1874                 setAttrs({id:'fp-tb-help-'+client_id+'-link', target:'_blank'}).
1875                 setStyle('display', 'none');
1876             toolbar.append(helplnk);
1877             toolbar.one('.fp-tb-help').one('a,button').
1878                 on('click', function(e) {
1879                     e.preventDefault();
1880                     helplnk.simulate('click')
1881                 });
1882         },
1883         hide_header: function() {
1884             if (this.fpnode.one('.fp-toolbar')) {
1885                 this.fpnode.one('.fp-toolbar').addClass('empty');
1886             }
1887             if (this.pathbar) {
1888                 this.pathbar.setContent('').addClass('empty');
1889             }
1890         },
1891         print_header: function() {
1892             var r = this.active_repo;
1893             var scope = this;
1894             var client_id = this.options.client_id;
1895             this.hide_header();
1896             this.print_path();
1897             var toolbar = this.fpnode.one('.fp-toolbar');
1898             if (!toolbar) { return; }
1899
1900             var enable_tb_control = function(node, enabled) {
1901                 if (!node) { return; }
1902                 node.addClassIf('disabled', !enabled).addClassIf('enabled', enabled)
1903                 if (enabled) {
1904                     toolbar.removeClass('empty');
1905                 }
1906             }
1907
1908             // TODO 'back' permanently disabled for now. Note, flickr_public uses 'Logout' for it!
1909             enable_tb_control(toolbar.one('.fp-tb-back'), false);
1910
1911             // search form
1912             enable_tb_control(toolbar.one('.fp-tb-search'), !r.nosearch);
1913             if(!r.nosearch) {
1914                 var searchform = toolbar.one('.fp-tb-search form');
1915                 searchform.setContent('');
1916                 this.request({
1917                     scope: this,
1918                     action:'searchform',
1919                     repository_id: this.active_repo.id,
1920                     callback: function(id, obj, args) {
1921                         if (obj.repo_id == scope.active_repo.id && obj.form) {
1922                             // if we did not jump to another repository meanwhile
1923                             searchform.setContent(obj.form);
1924                             // Highlight search text when user click for search.
1925                             var searchnode = searchform.one('input[name="s"]');
1926                             if (searchnode) {
1927                                 searchnode.once('click', function(e) {
1928                                     e.preventDefault();
1929                                     this.select();
1930                                 });
1931                             }
1932                         }
1933                     }
1934                 }, false);
1935             }
1936
1937             // refresh button
1938             // weather we use cache for this instance, this button will reload listing anyway
1939             enable_tb_control(toolbar.one('.fp-tb-refresh'), !r.norefresh);
1940
1941             // login button
1942             enable_tb_control(toolbar.one('.fp-tb-logout'), !r.nologin);
1943
1944             // manage url
1945             enable_tb_control(toolbar.one('.fp-tb-manage'), r.manage);
1946             Y.one('#fp-tb-manage-'+client_id+'-link').set('href', r.manage);
1947
1948             // help url
1949             enable_tb_control(toolbar.one('.fp-tb-help'), r.help);
1950             Y.one('#fp-tb-help-'+client_id+'-link').set('href', r.help);
1951
1952             // message
1953             enable_tb_control(toolbar.one('.fp-tb-message'), r.message);
1954             toolbar.one('.fp-tb-message').setContent(r.message);
1955         },
1956         print_path: function() {
1957             if (!this.pathbar) {
1958                 return;
1959             }
1960             this.pathbar.setContent('').addClass('empty');
1961             var p = this.filepath;
1962             if (p && p.length!=0 && this.viewmode != 2) {
1963                 for(var i = 0; i < p.length; i++) {
1964                     var el = this.pathnode.cloneNode(true);
1965                     this.pathbar.appendChild(el);
1966                     if (i == 0) {
1967                         el.addClass('first');
1968                     }
1969                     if (i == p.length-1) {
1970                         el.addClass('last');
1971                     }
1972                     if (i%2) {
1973                         el.addClass('even');
1974                     } else {
1975                         el.addClass('odd');
1976                     }
1977                     el.all('.fp-path-folder-name').setContent(Y.Escape.html(p[i].name));
1978                     el.on('click',
1979                             function(e, path) {
1980                                 e.preventDefault();
1981                                 this.list({'path':path});
1982                             },
1983                         this, p[i].path);
1984                 }
1985                 this.pathbar.removeClass('empty');
1986             }
1987         },
1988         hide: function() {
1989             this.selectui.hide();
1990             if (this.process_dlg) {
1991                 this.process_dlg.hide();
1992             }
1993             if (this.msg_dlg) {
1994                 this.msg_dlg.hide();
1995             }
1996             this.mainui.hide();
1997         },
1998         show: function() {
1999             if (this.fpnode) {
2000                 this.hide();
2001                 this.mainui.show();
2002                 this.show_recent_repository();
2003             } else {
2004                 this.launch();
2005             }
2006         },
2007         launch: function() {
2008             this.render();
2009         },
2010         show_recent_repository: function() {
2011             this.hide_header();
2012             this.viewbar_set_enabled(false);
2013             var repository_id = this.get_preference('recentrepository');
2014             this.viewmode = this.get_preference('recentviewmode');
2015             if (this.viewmode != 2 && this.viewmode != 3) {
2016                 this.viewmode = 1;
2017             }
2018             if (this.options.repositories[repository_id]) {
2019                 this.list({'repo_id':repository_id});
2020             }
2021         },
2022         get_preference: function (name) {
2023             if (this.options.userprefs[name]) {
2024                 return this.options.userprefs[name];
2025             } else {
2026                 return false;
2027             }
2028         },
2029         set_preference: function(name, value) {
2030             if (this.options.userprefs[name] != value) {
2031                 M.util.set_user_preference('filepicker_' + name, value);
2032                 this.options.userprefs[name] = value;
2033             }
2034         },
2035         in_iframe: function () {
2036             // If we're not the top window then we're in an iFrame
2037             return window.self !== window.top;
2038         }
2039     });
2040     var loading = Y.one('#filepicker-loading-'+options.client_id);
2041     if (loading) {
2042         loading.setStyle('display', 'none');
2043     }
2044     M.core_filepicker.instances[options.client_id] = new FilePickerHelper(options);
2045 };