lib/form/filemanager.js

   1 // This file is part of Moodle - http://moodle.org/
   2 //
   3 // Moodle is free software: you can redistribute it and/or modify
   4 // it under the terms of the GNU General Public License as published by
   5 // the Free Software Foundation, either version 3 of the License, or
   6 // (at your option) any later version.
   7 //
   8 // Moodle is distributed in the hope that it will be useful,
   9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 // GNU General Public License for more details.
  12 //
  13 // You should have received a copy of the GNU General Public License
  14 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  15 /**
  16  *
  17  * File Manager UI
  18  * =====
  19  * this.api, stores the URL to make ajax request
  20  * this.currentpath
  21  * this.filepicker_options
  22  * this.movefile_dialog
  23  * this.mkdir_dialog
  24  * this.rename_dialog
  25  * this.client_id
  26  * this.filecount, how many files in this filemanager
  27  * this.maxfiles
  28  * this.maxbytes
  29  * this.areamaxbytes, the maximum size of the area
  30  * this.filemanager, contains reference to filemanager Node
  31  * this.selectnode, contains referenct to select-file Node
  32  * this.selectui, YUI Panel to select the file
  33  *
  34  * FileManager options:
  35  * =====
  36  * this.options.currentpath
  37  * this.options.itemid
  38  */
  39
  40
  41 M.form_filemanager = {templates:{}};
  42
  43 M.form_filemanager.set_templates = function(Y, templates) {
  44     M.form_filemanager.templates = templates;
  45 }
  46
  47 /**
  48  * This fucntion is called for each file picker on page.
  49  */
  50 M.form_filemanager.init = function(Y, options) {
  51     var FileManagerHelper = function(options) {
  52         FileManagerHelper.superclass.constructor.apply(this, arguments);
  53     };
  54     FileManagerHelper.NAME = "FileManager";
  55     FileManagerHelper.ATTRS = {
  56         options: {},
  57         lang: {}
  58     };
  59
  60     Y.extend(FileManagerHelper, Y.Base, {
  61         api: M.cfg.wwwroot+'/repository/draftfiles_ajax.php',
  62         menus: {},
  63         initializer: function(options) {
  64             this.options = options;
  65             if (options.mainfile) {
  66                 this.enablemainfile = options.mainfile;
  67             }
  68             this.client_id = options.client_id;
  69             this.currentpath = '/';
  70             this.maxfiles = options.maxfiles;
  71             this.maxbytes = options.maxbytes;
  72             this.areamaxbytes = options.areamaxbytes;
  73             this.emptycallback = null; // Used by drag and drop upload
  74
  75             this.filepicker_options = options.filepicker?options.filepicker:{};
  76             this.filepicker_options.client_id = this.client_id;
  77             this.filepicker_options.context = options.context;
  78             this.filepicker_options.maxfiles = this.maxfiles;
  79             this.filepicker_options.maxbytes = this.maxbytes;
  80             this.filepicker_options.areamaxbytes = this.areamaxbytes;
  81             this.filepicker_options.env = 'filemanager';
  82             this.filepicker_options.itemid = options.itemid;
  83
  84             if (options.filecount) {
  85                 this.filecount = options.filecount;
  86             } else {
  87                 this.filecount = 0;
  88             }
  89             // prepare filemanager for drag-and-drop upload
  90             this.filemanager = Y.one('#filemanager-'+options.client_id);
  91             if (this.filemanager.hasClass('filemanager-container') || !this.filemanager.one('.filemanager-container')) {
  92                 this.dndcontainer = this.filemanager;
  93             } else  {
  94                 this.dndcontainer = this.filemanager.one('.filemanager-container');
  95                 if (!this.dndcontainer.get('id')) {
  96                     this.dndcontainer.generateID();
  97                 }
  98             }
  99             // save template for one path element and location of path bar
 100             if (this.filemanager.one('.fp-path-folder')) {
 101                 this.pathnode = this.filemanager.one('.fp-path-folder');
 102                 this.pathbar = this.pathnode.get('parentNode');
 103                 this.pathbar.removeChild(this.pathnode);
 104             }
 105             // initialize 'select file' panel
 106             this.selectnode = Y.Node.createWithFilesSkin(M.form_filemanager.templates.fileselectlayout);
 107             this.selectnode.setAttribute('aria-live', 'assertive');
 108             this.selectnode.setAttribute('role', 'dialog');
 109             this.selectnode.generateID();
 110
 111             var labelid = 'fm-dialog-label_'+ this.selectnode.get('id');
 112             this.selectui = new Y.Panel({
 113                 headerContent: '<span id="' + labelid +'">' + M.str.moodle.edit + '</span>',
 114                 srcNode      : this.selectnode,
 115                 zIndex       : 7600,
 116                 centered     : true,
 117                 modal        : true,
 118                 close        : true,
 119                 render       : true
 120             });
 121             this.selectui.plug(Y.Plugin.Drag,{handles:['#'+this.selectnode.get('id')+' .yui3-widget-hd']});
 122             Y.one('#'+this.selectnode.get('id')).setAttribute('aria-labelledby', labelid);
 123             this.selectui.hide();
 124             this.setup_select_file();
 125             // setup buttons onclick events
 126             this.setup_buttons();
 127             // set event handler for lazy loading of thumbnails
 128             this.filemanager.one('.fp-content').on(['scroll','resize'], this.content_scrolled, this);
 129             // display files
 130             this.viewmode = 1; // TODO take from cookies?
 131             this.filemanager.all('.fp-vb-icons,.fp-vb-tree,.fp-vb-details').removeClass('checked')
 132             this.filemanager.all('.fp-vb-icons').addClass('checked')
 133             this.refresh(this.currentpath); // MDL-31113 get latest list from server
 134         },
 135
 136         wait: function() {
 137            this.filemanager.addClass('fm-updating');
 138         },
 139         request: function(args, redraw) {
 140             var api = this.api + '?action='+args.action;
 141             var params = {};
 142             var scope = this;
 143             if (args['scope']) {
 144                 scope = args['scope'];
 145             }
 146             params['sesskey'] = M.cfg.sesskey;
 147             params['client_id'] = this.client_id;
 148             params['filepath'] = this.currentpath;
 149             params['itemid'] = this.options.itemid?this.options.itemid:0;
 150             if (args['params']) {
 151                 for (i in args['params']) {
 152                     params[i] = args['params'][i];
 153                 }
 154             }
 155             var cfg = {
 156                 method: 'POST',
 157                 on: {
 158                     complete: function(id,o,p) {
 159                         if (!o) {
 160                             alert('IO FATAL');
 161                             return;
 162                         }
 163                         var data = null;
 164                         try {
 165                             data = Y.JSON.parse(o.responseText);
 166                         } catch(e) {
 167                             scope.print_msg(M.str.repository.invalidjson, 'error');
 168                             Y.error(M.str.repository.invalidjson+":\n"+o.responseText);
 169                             return;
 170                         }
 171                         if (data && data.tree && scope.set_current_tree) {
 172                             scope.set_current_tree(data.tree);
 173                         }
 174                         args.callback(id,data,p);
 175                     }
 176                 },
 177                 arguments: {
 178                     scope: scope
 179                 },
 180                 headers: {
 181                     'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
 182                 },
 183                 data: build_querystring(params)
 184             };
 185             if (args.form) {
 186                 cfg.form = args.form;
 187             }
 188             Y.io(api, cfg);
 189             if (redraw) {
 190                 this.wait();
 191             }
 192         },
 193         filepicker_callback: function(obj) {
 194             this.filecount++;
 195             this.check_buttons();
 196             this.refresh(this.currentpath);
 197             if (typeof M.core_formchangechecker != 'undefined') {
 198                 M.core_formchangechecker.set_form_changed();
 199             }
 200         },
 201         check_buttons: function() {
 202             if (this.filecount>0) {
 203                 this.filemanager.removeClass('fm-nofiles');
 204             } else {
 205                 this.filemanager.addClass('fm-nofiles');
 206             }
 207             if (this.filecount >= this.maxfiles && this.maxfiles!=-1) {
 208                 this.filemanager.addClass('fm-maxfiles');
 209             }
 210             else {
 211                 this.filemanager.removeClass('fm-maxfiles');
 212             }
 213         },
 214         refresh: function(filepath) {
 215             var scope = this;
 216             this.currentpath = filepath;
 217             if (!filepath) {
 218                 filepath = this.currentpath;
 219             } else {
 220                 this.currentpath = filepath;
 221             }
 222             this.request({
 223                 action: 'list',
 224                 scope: scope,
 225                 params: {'filepath':filepath},
 226                 callback: function(id, obj, args) {
 227                     scope.filecount = obj.filecount;
 228                     scope.options = obj;
 229                     scope.lazyloading = {};
 230                     scope.check_buttons();
 231                     scope.render(obj);
 232                 }
 233             }, true);
 234         },
 235         /** displays message in a popup */
 236         print_msg: function(msg, type) {
 237             var header = M.str.moodle.error;
 238             if (type != 'error') {
 239                 type = 'info'; // one of only two types excepted
 240                 header = M.str.moodle.info;
 241             }
 242             if (!this.msg_dlg) {
 243                 this.msg_dlg_node = Y.Node.createWithFilesSkin(M.form_filemanager.templates.message);
 244                 var nodeid = this.msg_dlg_node.generateID();
 245
 246                 this.msg_dlg = new Y.Panel({
 247                     srcNode      : this.msg_dlg_node,
 248                     zIndex       : 8000,
 249                     centered     : true,
 250                     modal        : true,
 251                     visible      : false,
 252                     render       : true
 253                 });
 254                 this.msg_dlg.plug(Y.Plugin.Drag,{handles:['#'+nodeid+' .yui3-widget-hd']});
 255                 this.msg_dlg_node.one('.fp-msg-butok').on('click', function(e) {
 256                     e.preventDefault();
 257                     this.msg_dlg.hide();
 258                 }, this);
 259             }
 260
 261             this.msg_dlg.set('headerContent', header);
 262             this.msg_dlg_node.removeClass('fp-msg-info').removeClass('fp-msg-error').addClass('fp-msg-'+type)
 263             this.msg_dlg_node.one('.fp-msg-text').setContent(Y.Escape.html(msg));
 264             this.msg_dlg.show();
 265         },
 266         is_disabled: function() {
 267             return this.filemanager.ancestor('.fitem.disabled') != null;
 268         },
 269         setup_buttons: function() {
 270             var button_download = this.filemanager.one('.fp-btn-download');
 271             var button_create   = this.filemanager.one('.fp-btn-mkdir');
 272             var button_addfile  = this.filemanager.one('.fp-btn-add');
 273
 274             // setup 'add file' button
 275             button_addfile.on('click', this.show_filepicker, this);
 276
 277             var dndarrow = this.filemanager.one('.dndupload-arrow');
 278             if (dndarrow) {
 279                 dndarrow.on('click', this.show_filepicker, this);
 280             }
 281
 282             // setup 'make a folder' button
 283             if (this.options.subdirs) {
 284                 button_create.on('click',function(e) {
 285                     e.preventDefault();
 286                     if (this.is_disabled()) {
 287                         return;
 288                     }
 289                     var scope = this;
 290                     // a function used to perform an ajax request
 291                     var perform_action = function(e) {
 292                         e.preventDefault();
 293                         var foldername = Y.one('#fm-newname-'+scope.client_id).get('value');
 294                         if (!foldername) {
 295                             scope.mkdir_dialog.hide();
 296                             return;
 297                         }
 298                         scope.request({
 299                             action:'mkdir',
 300                             params: {filepath:scope.currentpath, newdirname:foldername},
 301                             callback: function(id, obj, args) {
 302                                 var filepath = obj.filepath;
 303                                 scope.mkdir_dialog.hide();
 304                                 scope.refresh(filepath);
 305                                 Y.one('#fm-newname-'+scope.client_id).set('value', '');
 306                                 if (typeof M.core_formchangechecker != 'undefined') {
 307                                     M.core_formchangechecker.set_form_changed();
 308                                 }
 309                             }
 310                         });
 311                     };
 312                     var validate_folder_name = function() {
 313                         var valid = false;
 314                         var foldername = Y.one('#fm-newname-'+scope.client_id).get('value');
 315                         if (foldername.length > 0) {
 316                             valid = true;
 317                         }
 318                         var btn = Y.one('#fm-mkdir-butcreate-'+scope.client_id);
 319                         if (btn) {
 320                             btn.set('disabled', !valid);
 321                         }
 322                         return valid;
 323                     };
 324                     if (!this.mkdir_dialog) {
 325                         var node = Y.Node.createWithFilesSkin(M.form_filemanager.templates.mkdir);
 326                         this.mkdir_dialog = new Y.Panel({
 327                             srcNode      : node,
 328                             zIndex       : 8000,
 329                             centered     : true,
 330                             modal        : true,
 331                             visible      : false,
 332                             render       : true
 333                         });
 334                         this.mkdir_dialog.plug(Y.Plugin.Drag,{handles:['.yui3-widget-hd']});
 335                         node.one('.fp-dlg-butcreate').set('id', 'fm-mkdir-butcreate-'+this.client_id).on('click',
 336                                 perform_action, this);
 337                         node.one('input').set('id', 'fm-newname-'+this.client_id).on('keydown', function(e) {
 338                             var valid = Y.bind(validate_folder_name, this)();
 339                             if (valid && e.keyCode === 13) {
 340                                 Y.bind(perform_action, this)(e);
 341                             }
 342                         }, this);
 343                         node.one('#fm-newname-'+this.client_id).on(['keyup', 'change'], function(e) {
 344                             Y.bind(validate_folder_name, this)();
 345                         }, this);
 346
 347                         node.one('label').set('for', 'fm-newname-' + this.client_id);
 348                         node.all('.fp-dlg-butcancel').on('click', function(e){e.preventDefault();this.mkdir_dialog.hide();}, this);
 349                         node.all('.fp-dlg-curpath').set('id', 'fm-curpath-'+this.client_id);
 350                     }
 351                     this.mkdir_dialog.show();
 352
 353                     // Default folder name:
 354                     var foldername = M.str.repository.newfolder;
 355                     while (this.has_folder(foldername)) {
 356                         foldername = increment_filename(foldername, true);
 357                     }
 358                     Y.one('#fm-newname-'+scope.client_id).set('value', foldername);
 359                     Y.bind(validate_folder_name, this)();
 360                     Y.one('#fm-newname-'+scope.client_id).focus().select();
 361                     Y.all('#fm-curpath-'+scope.client_id).setContent(this.currentpath);
 362                 }, this);
 363             } else {
 364                 this.filemanager.addClass('fm-nomkdir');
 365             }
 366
 367             // setup 'download this folder' button
 368             button_download.on('click',function(e) {
 369                 e.preventDefault();
 370                 if (this.is_disabled()) {
 371                     return;
 372                 }
 373                 var scope = this;
 374                 // perform downloaddir ajax request
 375                 this.request({
 376                     action: 'downloaddir',
 377                     scope: scope,
 378                     callback: function(id, obj, args) {
 379                         if (obj) {
 380                             scope.refresh(obj.filepath);
 381                             node = Y.Node.create('<iframe></iframe>').setStyles({
 382                                 visibility : 'hidden',
 383                                 width : '1px',
 384                                 height : '1px'
 385                             });
 386                             node.set('src', obj.fileurl);
 387                             Y.one('body').appendChild(node);
 388                         } else {
 389                             scope.print_msg(M.str.repository.draftareanofiles, 'error');
 390                         }
 391                     }
 392                 });
 393             }, this);
 394
 395             this.filemanager.all('.fp-vb-icons,.fp-vb-tree,.fp-vb-details').
 396                 on('click', function(e) {
 397                     e.preventDefault();
 398                     var viewbar = this.filemanager.one('.fp-viewbar')
 399                     if (!this.is_disabled() && (!viewbar || !viewbar.hasClass('disabled'))) {
 400                         this.filemanager.all('.fp-vb-icons,.fp-vb-tree,.fp-vb-details').removeClass('checked')
 401                         if (e.currentTarget.hasClass('fp-vb-tree')) {
 402                             this.viewmode = 2;
 403                         } else if (e.currentTarget.hasClass('fp-vb-details')) {
 404                             this.viewmode = 3;
 405                         } else {
 406                             this.viewmode = 1;
 407                         }
 408                         e.currentTarget.addClass('checked')
 409                         this.render();
 410                     }
 411                 }, this);
 412         },
 413
 414         show_filepicker: function (e) {
 415             // if maxfiles == -1, the no limit
 416             e.preventDefault();
 417             if (this.is_disabled()) {
 418                 return;
 419             }
 420             var options = this.filepicker_options;
 421             options.formcallback = this.filepicker_callback;
 422             // XXX: magic here, to let filepicker use filemanager scope
 423             options.magicscope = this;
 424             options.savepath = this.currentpath;
 425             M.core_filepicker.show(Y, options);
 426         },
 427
 428         print_path: function() {
 429             var p = this.options.path;
 430             this.pathbar.setContent('').addClass('empty');
 431             if (p && p.length!=0 && this.viewmode != 2) {
 432                 for(var i = 0; i < p.length; i++) {
 433                     var el = this.pathnode.cloneNode(true);
 434                     this.pathbar.appendChild(el);
 435
 436                     if (i == 0) {
 437                         el.addClass('first');
 438                     }
 439                     if (i == p.length-1) {
 440                         el.addClass('last');
 441                     }
 442
 443                     if (i%2) {
 444                         el.addClass('even');
 445                     } else {
 446                         el.addClass('odd');
 447                     }
 448                     el.one('.fp-path-folder-name').setContent(Y.Escape.html(p[i].name)).
 449                         on('click', function(e, path) {
 450                             e.preventDefault();
 451                             if (!this.is_disabled()) {
 452                                 this.refresh(path);
 453                             }
 454                         }, this, p[i].path);
 455                 }
 456                 this.pathbar.removeClass('empty');
 457             }
 458         },
 459         get_filepath: function(obj) {
 460             if (obj.path && obj.path.length) {
 461                 return obj.path[obj.path.length-1].path;
 462             }
 463             return '';
 464         },
 465         treeview_dynload: function(node, cb) {
 466             var retrieved_children = {};
 467             if (node.children) {
 468                 for (var i in node.children) {
 469                     retrieved_children[node.children[i].path] = node.children[i];
 470                 }
 471             }
 472             if (!node.path || node.path == '/') {
 473                 // this is a root pseudo folder
 474                 node.fileinfo.filepath = '/';
 475                 node.fileinfo.type = 'folder';
 476                 node.fileinfo.fullname = node.fileinfo.title;
 477                 node.fileinfo.filename = '.';
 478             }
 479             this.request({
 480                 action:'list',
 481                 params: {filepath:node.path?node.path:''},
 482                 scope:this,
 483                 callback: function(id, obj, args) {
 484                     var list = obj.list;
 485                     var scope = args.scope;
 486                     // check that user did not leave the view mode before recieving this response
 487                     if (!(scope.viewmode == 2 && node && node.getChildrenEl())) {
 488                         return;
 489                     }
 490                     if (cb != null) { // (in manual mode do not update current path)
 491                         scope.options = obj;
 492                         scope.currentpath = node.path?node.path:'/';
 493                     }
 494                     node.highlight(false);
 495                     node.origlist = obj.list ? obj.list : null;
 496                     node.origpath = obj.path ? obj.path : null;
 497                     node.children = [];
 498                     for(k in list) {
 499                         if (list[k].type == 'folder' && retrieved_children[list[k].filepath]) {
 500                             // if this child is a folder and has already been retrieved
 501                             retrieved_children[list[k].filepath].fileinfo = list[k];
 502                             node.children[node.children.length] = retrieved_children[list[k].filepath];
 503                         } else {
 504                             // append new file to the list
 505                             scope.view_files([list[k]]);
 506                         }
 507                     }
 508                     if (cb == null) {
 509                         node.refresh();
 510                     } else {
 511                         // invoke callback requested by TreeView component
 512                         cb();
 513                     }
 514                     scope.content_scrolled();
 515                 }
 516             }, false);
 517         },
 518         content_scrolled: function(e) {
 519             setTimeout(Y.bind(function() {
 520                 if (this.processingimages) {return;}
 521                 this.processingimages = true;
 522                 var scope = this,
 523                     fpcontent = this.filemanager.one('.fp-content'),
 524                     fpcontenty = fpcontent.getY(),
 525                     fpcontentheight = fpcontent.getStylePx('height'),
 526                     is_node_visible = function(node) {
 527                         var offset = node.getY()-fpcontenty;
 528                         if (offset <= fpcontentheight && (offset >=0 || offset+node.getStylePx('height')>=0)) {
 529                             return true;
 530                         }
 531                         return false;
 532                     };
 533                 // replace src for visible images that need to be lazy-loaded
 534                 if (scope.lazyloading) {
 535                     fpcontent.all('img').each( function(node) {
 536                         if (node.get('id') && scope.lazyloading[node.get('id')] && is_node_visible(node)) {
 537                             node.setImgRealSrc(scope.lazyloading);
 538                         }
 539                     });
 540                 }
 541                 this.processingimages = false;
 542             }, this), 200)
 543         },
 544         view_files: function(appendfiles) {
 545             this.filemanager.removeClass('fm-updating').removeClass('fm-noitems');
 546             if ((appendfiles == null) && (!this.options.list || this.options.list.length == 0) && this.viewmode != 2) {
 547                 this.filemanager.addClass('fm-noitems');
 548                 return;
 549             }
 550             var list = (appendfiles != null) ? appendfiles : this.options.list;
 551             var element_template;
 552             if (this.viewmode == 2 || this.viewmode == 3) {
 553                 element_template = Y.Node.create(M.form_filemanager.templates.listfilename);
 554             } else {
 555                 this.viewmode = 1;
 556                 element_template = Y.Node.create(M.form_filemanager.templates.iconfilename);
 557             }
 558             var options = {
 559                 viewmode : this.viewmode,
 560                 appendonly : appendfiles != null,
 561                 filenode : element_template,
 562                 callbackcontext : this,
 563                 callback : function(e, node) {
 564                     if (e.preventDefault) { e.preventDefault(); }
 565                     if (node.type == 'folder') {
 566                         this.refresh(node.filepath);
 567                     } else {
 568                         this.select_file(node);
 569                     }
 570                 },
 571                 rightclickcallback : function(e, node) {
 572                     if (e.preventDefault) { e.preventDefault(); }
 573                     this.select_file(node);
 574                 },
 575                 classnamecallback : function(node) {
 576                     var classname = '';
 577                     if (node.type == 'folder' || (!node.type && !node.filename)) {
 578                         classname = classname + ' fp-folder';
 579                     }
 580                     if (node.filename || node.filepath || (node.path && node.path != '/')) {
 581                         classname = classname + ' fp-hascontextmenu';
 582                     }
 583                     if (node.isref) {
 584                         classname = classname + ' fp-isreference';
 585                     }
 586                     if (node.refcount) {
 587                         classname = classname + ' fp-hasreferences';
 588                     }
 589                     if (node.originalmissing) {
 590                         classname = classname + ' fp-originalmissing';
 591                     }
 592                     if (node.sortorder == 1) { classname = classname + ' fp-mainfile';}
 593                     return Y.Lang.trim(classname);
 594                 }
 595             };
 596             if (this.viewmode == 2) {
 597                 options.dynload = true;
 598                 options.filepath = this.options.path;
 599                 options.treeview_dynload = this.treeview_dynload;
 600                 options.norootrightclick = true;
 601                 options.callback = function(e, node) {
 602                     // TODO MDL-32736 e is not an event here but an object with properties 'event' and 'node'
 603                     if (!node.fullname) {return;}
 604                     if (node.type != 'folder') {
 605                         if (e.node.parent && e.node.parent.origpath) {
 606                             // set the current path
 607                             this.options.path = e.node.parent.origpath;
 608                             this.options.list = e.node.parent.origlist;
 609                             this.print_path();
 610                         }
 611                         this.currentpath = node.filepath;
 612                         this.select_file(node);
 613                     } else {
 614                         // save current path and filelist (in case we want to jump to other viewmode)
 615                         this.options.path = e.node.origpath;
 616                         this.options.list = e.node.origlist;
 617                         this.currentpath = node.filepath;
 618                         this.print_path();
 619                         //this.content_scrolled();
 620                     }
 621                 };
 622             }
 623             if (!this.lazyloading) {
 624                 this.lazyloading={};
 625             }
 626             this.filemanager.one('.fp-content').fp_display_filelist(options, list, this.lazyloading);
 627             this.content_scrolled();
 628         },
 629         populate_licenses_select: function(node) {
 630             if (!node) {
 631                 return;
 632             }
 633             node.setContent('');
 634             var licenses = this.options.licenses;
 635             for (var i in licenses) {
 636                 var option = Y.Node.create('<option/>').
 637                     set('value', licenses[i].shortname).
 638                     setContent(Y.Escape.html(licenses[i].fullname));
 639                 node.appendChild(option)
 640             }
 641         },
 642         set_current_tree: function(tree) {
 643             var appendfilepaths = function(list, node) {
 644                 if (!node || !node.children || !node.children.length) {return;}
 645                 for (var i in node.children) {
 646                     list[list.length] = node.children[i].filepath;
 647                     appendfilepaths(list, node.children[i]);
 648                 }
 649             }
 650             var list = ['/'];
 651             appendfilepaths(list, tree);
 652             var selectnode = this.selectnode;
 653             node = selectnode.one('.fp-path select');
 654             node.setContent('');
 655             for (var i in list) {
 656                 node.appendChild(Y.Node.create('<option/>').
 657                     set('value', list[i]).setContent(Y.Escape.html(list[i])));
 658             }
 659         },
 660         update_file: function(confirmed) {
 661             var selectnode = this.selectnode;
 662             var fileinfo = this.selectui.fileinfo;
 663
 664             var newfilename = Y.Lang.trim(selectnode.one('.fp-saveas input').get('value'));
 665             var filenamechanged = (newfilename && newfilename != fileinfo.fullname);
 666             var pathselect = selectnode.one('.fp-path select'),
 667                     pathindex = pathselect.get('selectedIndex'),
 668                     targetpath = pathselect.get("options").item(pathindex).get('value');
 669             var filepathchanged = (targetpath != this.get_parent_folder_name(fileinfo));
 670             var newauthor = Y.Lang.trim(selectnode.one('.fp-author input').get('value'));
 671             var authorchanged = (newauthor != Y.Lang.trim(fileinfo.author));
 672             var licenseselect = selectnode.one('.fp-license select'),
 673                     licenseindex = licenseselect.get('selectedIndex'),
 674                     newlicense = licenseselect.get("options").item(licenseindex).get('value');
 675             var licensechanged = (newlicense != fileinfo.license);
 676
 677             var params, action;
 678             var dialog_options = {callback:this.update_file, callbackargs:[true], scope:this};
 679             if (fileinfo.type == 'folder') {
 680                 if (!newfilename) {
 681                     this.print_msg(M.str.repository.entername, 'error');
 682                     return;
 683                 }
 684                 if (filenamechanged || filepathchanged) {
 685                     if (!confirmed) {
 686                         dialog_options.message = M.str.repository.confirmrenamefolder;
 687                         this.show_confirm_dialog(dialog_options);
 688                         return;
 689                     }
 690                     params = {filepath:fileinfo.filepath, newdirname:newfilename, newfilepath:targetpath};
 691                     action = 'updatedir';
 692                 }
 693             } else {
 694                 if (!newfilename) {
 695                     this.print_msg(M.str.repository.enternewname, 'error');
 696                     return;
 697                 }
 698                 if ((filenamechanged || filepathchanged) && !confirmed && fileinfo.refcount) {
 699                     dialog_options.message = M.util.get_string('confirmrenamefile', 'repository', fileinfo.refcount);
 700                     this.show_confirm_dialog(dialog_options);
 701                     return;
 702                 }
 703                 if (filenamechanged || filepathchanged || licensechanged || authorchanged) {
 704                     params = {filepath:fileinfo.filepath, filename:fileinfo.fullname,
 705                         newfilename:newfilename, newfilepath:targetpath,
 706                         newlicense:newlicense, newauthor:newauthor};
 707                     action = 'updatefile';
 708                 }
 709             }
 710             if (!action) {
 711                 // no changes
 712                 this.selectui.hide();
 713                 return;
 714             }
 715             selectnode.addClass('loading');
 716             this.request({
 717                 action: action,
 718                 scope: this,
 719                 params: params,
 720                 callback: function(id, obj, args) {
 721                     if (obj.error) {
 722                         selectnode.removeClass('loading');
 723                         args.scope.print_msg(obj.error, 'error');
 724                     } else {
 725                         args.scope.selectui.hide();
 726                         args.scope.refresh((obj && obj.filepath) ? obj.filepath : '/');
 727                         if (typeof M.core_formchangechecker != 'undefined') {
 728                             M.core_formchangechecker.set_form_changed();
 729                         }
 730                     }
 731                 }
 732             });
 733         },
 734         /**
 735          * Displays a confirmation dialog
 736          * Expected attributes in dialog_options: message, callback, callbackargs(optional), scope(optional)
 737          */
 738         show_confirm_dialog: function(dialog_options) {
 739             // instead of M.util.show_confirm_dialog(e, dialog_options);
 740             if (!this.confirm_dlg) {
 741                 this.confirm_dlg_node = Y.Node.createWithFilesSkin(M.form_filemanager.templates.confirmdialog);
 742                 var node = this.confirm_dlg_node;
 743                 node.generateID();
 744                 this.confirm_dlg = new Y.Panel({
 745                     srcNode      : node,
 746                     zIndex       : 8000,
 747                     centered     : true,
 748                     modal        : true,
 749                     visible      : false,
 750                     render       : true,
 751                     buttons      : {}
 752                 });
 753                 this.confirm_dlg.plug(Y.Plugin.Drag,{handles:['#'+node.get('id')+' .yui3-widget-hd']});
 754                 var handle_confirm = function(ev) {
 755                     var dlgopt = this.confirm_dlg.dlgopt;
 756                     ev.preventDefault();
 757                     this.confirm_dlg.hide();
 758                     if (dlgopt.callback) {
 759                         if (dlgopt.callbackargs) {
 760                             dlgopt.callback.apply(dlgopt.scope || this, dlgopt.callbackargs);
 761                         } else {
 762                             dlgopt.callback.apply(dlgopt.scope || this);
 763                         }
 764                     }
 765                 }
 766                 var handle_cancel = function(ev) {
 767                     ev.preventDefault();
 768                     this.confirm_dlg.hide();
 769                 }
 770                 node.one('.fp-dlg-butconfirm').on('click', handle_confirm, this);
 771                 node.one('.fp-dlg-butcancel').on('click', handle_cancel, this);
 772             }
 773             this.confirm_dlg.dlgopt = dialog_options;
 774             this.confirm_dlg_node.one('.fp-dlg-text').setContent(dialog_options.message);
 775             this.confirm_dlg.show();
 776         },
 777         setup_select_file: function() {
 778             var selectnode = this.selectnode;
 779             // bind labels with corresponding inputs
 780             selectnode.all('.fp-saveas,.fp-path,.fp-author,.fp-license').each(function (node) {
 781                 node.all('label').set('for', node.one('input,select').generateID());
 782             });
 783             this.populate_licenses_select(selectnode.one('.fp-license select'));
 784             // register event on clicking buttons
 785             selectnode.one('.fp-file-update').on('click', function(e) {
 786                 e.preventDefault();
 787                 this.update_file();
 788             }, this);
 789             selectnode.all('form').on('keydown', function(e) {
 790                 if (e.keyCode == 13) {
 791                     e.preventDefault();
 792                     this.update_file();
 793                 }
 794             }, this);
 795             selectnode.one('.fp-file-download').on('click', function(e) {
 796                 e.preventDefault();
 797                 if (this.selectui.fileinfo.type != 'folder') {
 798                     node = Y.Node.create('<iframe></iframe>').setStyles({
 799                         visibility : 'hidden',
 800                         width : '1px',
 801                         height : '1px'
 802                     });
 803                     node.set('src', this.selectui.fileinfo.url);
 804                     Y.one('body').appendChild(node);
 805                 }
 806             }, this);
 807             selectnode.one('.fp-file-delete').on('click', function(e) {
 808                 e.preventDefault();
 809                 var dialog_options = {};
 810                 var params = {};
 811                 var fileinfo = this.selectui.fileinfo;
 812                 dialog_options.scope = this;
 813                 params.filepath = fileinfo.filepath;
 814                 if (fileinfo.type == 'folder') {
 815                     params.filename = '.';
 816                     dialog_options.message = M.str.repository.confirmdeletefolder;
 817                 } else {
 818                     params.filename = fileinfo.fullname;
 819                     if (fileinfo.refcount) {
 820                         dialog_options.message = M.util.get_string('confirmdeletefilewithhref', 'repository', fileinfo.refcount);
 821                     } else {
 822                         dialog_options.message = M.str.repository.confirmdeletefile;
 823                     }
 824                 }
 825                 dialog_options.callbackargs = [params];
 826                 dialog_options.callback = function(params) {
 827                     //selectnode.addClass('loading');
 828                     this.request({
 829                         action: 'delete',
 830                         scope: this,
 831                         params: params,
 832                         callback: function(id, obj, args) {
 833                             //args.scope.selectui.hide();
 834                             args.scope.filecount--;
 835                             args.scope.refresh(obj.filepath);
 836                             if (typeof M.core_formchangechecker != 'undefined') {
 837                                 M.core_formchangechecker.set_form_changed();
 838                             }
 839                         }
 840                     });
 841                 };
 842                 this.selectui.hide(); // TODO remove this after confirm dialog is replaced with YUI3
 843                 this.show_confirm_dialog(dialog_options);
 844             }, this);
 845             selectnode.one('.fp-file-zip').on('click', function(e) {
 846                 e.preventDefault();
 847                 var params = {};
 848                 var fileinfo = this.selectui.fileinfo;
 849                 if (fileinfo.type != 'folder') {
 850                     // this button should not even be shown
 851                     return;
 852                 }
 853                 params['filepath']   = fileinfo.filepath;
 854                 params['filename']   = '.';
 855                 selectnode.addClass('loading');
 856                 this.request({
 857                     action: 'zip',
 858                     scope: this,
 859                     params: params,
 860                     callback: function(id, obj, args) {
 861                         args.scope.selectui.hide();
 862                         args.scope.refresh(obj.filepath);
 863                     }
 864                 });
 865             }, this);
 866             selectnode.one('.fp-file-unzip').on('click', function(e) {
 867                 e.preventDefault();
 868                 var params = {};
 869                 var fileinfo = this.selectui.fileinfo;
 870                 if (fileinfo.type != 'zip') {
 871                     // this button should not even be shown
 872                     return;
 873                 }
 874                 params['filepath'] = fileinfo.filepath;
 875                 params['filename'] = fileinfo.fullname;
 876                 selectnode.addClass('loading');
 877                 this.request({
 878                     action: 'unzip',
 879                     scope: this,
 880                     params: params,
 881                     callback: function(id, obj, args) {
 882                         args.scope.selectui.hide();
 883                         args.scope.refresh(obj.filepath);
 884                     }
 885                 });
 886             }, this);
 887             selectnode.one('.fp-file-setmain').on('click', function(e) {
 888                 e.preventDefault();
 889                 var params = {};
 890                 var fileinfo = this.selectui.fileinfo;
 891                 if (!this.enablemainfile || fileinfo.type == 'folder') {
 892                     // this button should not even be shown for folders or when mainfile is disabled
 893                     return;
 894                 }
 895                 params['filepath'] = fileinfo.filepath;
 896                 params['filename'] = fileinfo.fullname;
 897                 selectnode.addClass('loading');
 898                 this.request({
 899                     action: 'setmainfile',
 900                     scope: this,
 901                     params: params,
 902                     callback: function(id, obj, args) {
 903                         args.scope.selectui.hide();
 904                         args.scope.refresh(fileinfo.filepath);
 905                     }
 906                 });
 907             }, this);
 908             selectnode.all('.fp-file-cancel').on('click', function(e) {
 909                 e.preventDefault();
 910                 // TODO if changed asked to confirm, the same with close button
 911                 this.selectui.hide();
 912             }, this);
 913         },
 914         get_parent_folder_name: function(node) {
 915             if (node.type != 'folder' || node.filepath.length < node.fullname.length+1) {
 916                 return node.filepath;
 917             }
 918             var basedir = node.filepath.substr(0, node.filepath.length - node.fullname.length - 1);
 919             var lastdir = node.filepath.substr(node.filepath.length - node.fullname.length - 2);
 920             if (lastdir == '/' + node.fullname + '/') {
 921                 return basedir;
 922             }
 923             return node.filepath;
 924         },
 925         select_file: function(node) {
 926             if (this.is_disabled()) {
 927                 return;
 928             }
 929             var selectnode = this.selectnode;
 930             selectnode.removeClass('loading').removeClass('fp-folder').
 931                 removeClass('fp-file').removeClass('fp-zip').removeClass('fp-cansetmain');
 932             if (node.type == 'folder' || node.type == 'zip') {
 933                 selectnode.addClass('fp-'+node.type);
 934             } else {
 935                 selectnode.addClass('fp-file');
 936             }
 937             if (this.enablemainfile && (node.sortorder != 1) && node.type == 'file') {
 938                 selectnode.addClass('fp-cansetmain');
 939             }
 940             this.selectui.fileinfo = node;
 941             selectnode.one('.fp-saveas input').set('value', node.fullname);
 942             var foldername = this.get_parent_folder_name(node);
 943             selectnode.all('.fp-author input').set('value', node.author ? node.author : '');
 944             selectnode.all('.fp-license select option[selected]').set('selected', false);
 945             selectnode.all('.fp-license select option[value='+node.license+']').set('selected', true);
 946             selectnode.all('.fp-path select option[selected]').set('selected', false);
 947             selectnode.all('.fp-path select option').each(function(el){
 948                 if (el.get('value') == foldername) {
 949                     el.set('selected', true);
 950                 }
 951             });
 952             selectnode.all('.fp-author input, .fp-license select').set('disabled',(node.type == 'folder')?'disabled':'');
 953             // display static information about a file (when known)
 954             var attrs = ['datemodified','datecreated','size','dimensions','original','reflist'];
 955             for (var i in attrs) {
 956                 if (selectnode.one('.fp-'+attrs[i])) {
 957                     var value = (node[attrs[i]+'_f']) ? node[attrs[i]+'_f'] : (node[attrs[i]] ? node[attrs[i]] : '');
 958                     selectnode.one('.fp-'+attrs[i]).addClassIf('fp-unknown', ''+value == '')
 959                         .one('.fp-value').setContent(Y.Escape.html(value));
 960                 }
 961             }
 962             // display thumbnail
 963             var imgnode = Y.Node.create('<img/>').
 964                 set('src', node.realthumbnail ? node.realthumbnail : node.thumbnail).
 965                 setStyle('maxHeight', ''+(node.thumbnail_height ? node.thumbnail_height : 90)+'px').
 966                 setStyle('maxWidth', ''+(node.thumbnail_width ? node.thumbnail_width : 90)+'px');
 967             selectnode.one('.fp-thumbnail').setContent('').appendChild(imgnode);
 968             // load original location if applicable
 969             if (node.isref && !node.original) {
 970                 selectnode.one('.fp-original').removeClass('fp-unknown').addClass('fp-loading');
 971                 this.request({
 972                     action: 'getoriginal',
 973                     scope: this,
 974                     params: {'filepath':node.filepath,'filename':node.fullname},
 975                     callback: function(id, obj, args) {
 976                         // check if we did not select another file meanwhile
 977                         var scope = args.scope;
 978                         if (scope.selectui.fileinfo && node &&
 979                                 scope.selectui.fileinfo.filepath == node.filepath &&
 980                                 scope.selectui.fileinfo.fullname == node.fullname) {
 981                             selectnode.one('.fp-original').removeClass('fp-loading');
 982                             if (obj.original) {
 983                                 node.original = obj.original;
 984                                 selectnode.one('.fp-original .fp-value').setContent(Y.Escape.html(node.original));
 985                             } else {
 986                                 selectnode.one('.fp-original .fp-value').setContent(M.str.repository.unknownsource);
 987                             }
 988                         }
 989                     }
 990                 }, false);
 991             }
 992             // load references list if applicable
 993             selectnode.one('.fp-refcount').setContent(node.refcount ? M.util.get_string('referencesexist', 'repository', node.refcount) : '');
 994             if (node.refcount && !node.reflist) {
 995                 selectnode.one('.fp-reflist').removeClass('fp-unknown').addClass('fp-loading');
 996                 this.request({
 997                     action: 'getreferences',
 998                     scope: this,
 999                     params: {'filepath':node.filepath,'filename':node.fullname},
1000                     callback: function(id, obj, args) {
1001                         // check if we did not select another file meanwhile
1002                         var scope = args.scope;
1003                         if (scope.selectui.fileinfo && node &&
1004                                 scope.selectui.fileinfo.filepath == node.filepath &&
1005                                 scope.selectui.fileinfo.fullname == node.fullname) {
1006                             selectnode.one('.fp-reflist').removeClass('fp-loading');
1007                             if (obj.references) {
1008                                 node.reflist = '';
1009                                 for (var i in obj.references) {
1010                                     node.reflist += '<li>'+obj.references[i]+'</li>';
1011                                 }
1012                                 selectnode.one('.fp-reflist .fp-value').setContent(Y.Escape.html(node.reflist));
1013                             } else {
1014                                 selectnode.one('.fp-reflist .fp-value').setContent('');
1015                             }
1016                         }
1017                     }
1018                 }, false);
1019             }
1020             // update dialog header
1021             var nodename = node.fullname;
1022             // Limit the string length so it fits nicely on mobile devices
1023             var namelength = 50;
1024             if (nodename.length > namelength) {
1025                 nodename = nodename.substring(0, namelength) + '...';
1026             }
1027             Y.one('#fm-dialog-label_'+selectnode.get('id')).setContent(Y.Escape.html(M.str.moodle.edit+' '+nodename));
1028             // show panel
1029             this.selectui.show();
1030             Y.one('#'+selectnode.get('id')).focus();
1031         },
1032         render: function() {
1033             this.print_path();
1034             this.view_files();
1035         },
1036         has_folder: function(foldername) {
1037             var element;
1038             for (var i in this.options.list) {
1039                 element = this.options.list[i];
1040                 if (element.type == 'folder' && element.fullname == foldername) {
1041                     return true;
1042                 }
1043             }
1044             return false;
1045         }
1046     });
1047
1048     // finally init everything needed
1049     // hide loading picture, display filemanager interface
1050     var filemanager = Y.one('#filemanager-'+options.client_id);
1051     filemanager.removeClass('fm-loading').addClass('fm-loaded');
1052
1053     var manager = new FileManagerHelper(options);
1054     var dndoptions = {
1055         filemanager: manager,
1056         acceptedtypes: options.filepicker.accepted_types,
1057         clientid: options.client_id,
1058         author: options.author,
1059         maxfiles: options.maxfiles,
1060         maxbytes: options.maxbytes,
1061         areamaxbytes: options.areamaxbytes,
1062         itemid: options.itemid,
1063         repositories: manager.filepicker_options.repositories,
1064         containerid: manager.dndcontainer.get('id')
1065     };
1066     M.form_dndupload.init(Y, dndoptions);
1067 };