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