repository/filepicker.js

   1 // YUI3 File Picker module for moodle
   2 // Author: Dongsheng Cai <dongsheng@moodle.com>
   3
   4 /**
   5  *
   6  * File Picker UI
   7  * =====
   8  * this.rendered, it tracks if YUI Panel rendered
   9  * this.api, stores the URL to make ajax request
  10  * this.mainui, YUI Panel
  11  * this.treeview, YUI Treeview
  12  * this.viewbar, a button group to switch view mode
  13  * this.viewmode, store current view mode
  14  *
  15  * Filepicker options:
  16  * =====
  17  * this.options.client_id, the instance id
  18  * this.options.contextid
  19  * this.options.itemid
  20  * this.options.repositories, stores all repositories displaied in file picker
  21  * this.options.formcallback
  22  *
  23  * Active repository options
  24  * =====
  25  * this.active_repo.id
  26  * this.active_repo.nosearch
  27  * this.active_repo.norefresh
  28  * this.active_repo.nologin
  29  * this.active_repo.help
  30  * this.active_repo.manage
  31  *
  32  * Server responses
  33  * =====
  34  * this.filelist, cached filelist
  35  * this.pages
  36  * this.page
  37  * this.filepath, current path
  38  * this.logindata, cached login form
  39  */
  40
  41 M.core_filepicker = M.core_filepicker || {};
  42
  43 /**
  44  * instances of file pickers used on page
  45  */
  46 M.core_filepicker.instances = M.core_filepicker.instances || {};
  47 M.core_filepicker.active_filepicker = null;
  48
  49 /**
  50  * Init and show file picker
  51  */
  52 M.core_filepicker.show = function(Y, options) {
  53     if (!M.core_filepicker.instances[options.client_id]) {
  54         M.core_filepicker.init(Y, options);
  55     }
  56     M.core_filepicker.instances[options.client_id].show();
  57 };
  58
  59 /**
  60  * Add new file picker to current instances
  61  */
  62 M.core_filepicker.init = function(Y, options) {
  63     var FilePickerHelper = function(options) {
  64         FilePickerHelper.superclass.constructor.apply(this, arguments);
  65     }
  66
  67     FilePickerHelper.NAME = "FilePickerHelper";
  68     FilePickerHelper.ATTRS = {
  69         options: {},
  70         lang: {}
  71     };
  72
  73     Y.extend(FilePickerHelper, Y.Base, {
  74         api: M.cfg.wwwroot+'/repository/repository_ajax.php',
  75
  76         initializer: function(options) {
  77             this.options = options;
  78             if (!this.options.savepath) {
  79                 this.options.savepath = '/';
  80             }
  81         },
  82
  83         destructor: function() {
  84         },
  85
  86         request: function(args, redraw) {
  87             var client_id = args.client_id;
  88             var api = this.api + '?action='+args.action;
  89             var params = {};
  90             var scope = this;
  91             if (args['scope']) {
  92                 scope = args['scope'];
  93             }
  94             params['repo_id']=args.repository_id;
  95             params['p'] = args.path?args.path:'';
  96             params['page'] = args.page?args.page:'';
  97             params['env']=this.options.env;
  98             // the form element only accept certain file types
  99             params['accepted_types']=this.options.accepted_types;
 100             params['sesskey']=M.cfg.sesskey;
 101             params['client_id'] = args.client_id;
 102             params['filearea'] = this.options.filearea?this.options.filearea:'user_draft';
 103             params['itemid'] = this.options.itemid?this.options.itemid:0;
 104             params['maxbytes'] = this.options.maxbytes?this.options.maxbytes:-1;
 105             if (args['params']) {
 106                 for (i in args['params']) {
 107                     params[i] = args['params'][i];
 108                 }
 109             }
 110             var cfg = {
 111                 method: 'POST',
 112                 on: {
 113                     complete: function(id,o,p) {
 114                         var panel_id = '#panel-'+client_id;
 115                         if (!o) {
 116                             alert('IO FATAL');
 117                             return;
 118                         }
 119                         var data = null;
 120                         try {
 121                             data = Y.JSON.parse(o.responseText);
 122                         } catch(e) {
 123                             Y.one(panel_id).set('innerHTML', 'ERROR: '+M.str.repository.invalidjson);
 124                             return;
 125                         }
 126                         // error checking
 127                         if (data && data.e) {
 128                             Y.one(panel_id).set('innerHTML', 'ERROR: '+data.e);
 129                             return;
 130                         } else {
 131                             args.callback(id,data,p);
 132                         }
 133                     }
 134                 },
 135                 arguments: {
 136                     scope: scope
 137                 },
 138                 headers: {
 139                     'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
 140                     'User-Agent': 'MoodleFilePicker/3.0'
 141                 },
 142                 data: build_querystring(params),
 143                 context: this
 144             };
 145             if (args.form) {
 146                 cfg.form = args.form;
 147             }
 148             Y.io(api, cfg);
 149             if (redraw) {
 150                 this.wait('load');
 151             }
 152         },
 153
 154         build_tree: function(node, level) {
 155             var client_id = this.options.client_id;
 156             var dynload = this.active_repo.dynload;
 157             if(node.children) {
 158                 node.title = '<i><u>'+node.title+'</u></i>';
 159             }
 160             var info = {
 161                 label:node.title,
 162                 //title:fp_lang.date+' '+node.date+fp_lang.size+' '+node.size,
 163                 filename:node.title,
 164                 source:node.source?node.source:'',
 165                 thumbnail:node.thumbnail,
 166                 path:node.path?node.path:[]
 167             };
 168             var tmpNode = new YAHOO.widget.TextNode(info, level, false);
 169             //var tooltip = new YAHOO.widget.Tooltip(tmpNode.labelElId, {
 170                 //context:tmpNode.labelElId, text:info.title});
 171             if(node.repo_id) {
 172                 tmpNode.repo_id=node.repo_id;
 173             }else{
 174                 tmpNode.repo_id=this.active_repo.id;
 175             }
 176             if(node.children) {
 177                 if(node.expanded) {
 178                     tmpNode.expand();
 179                 }
 180                 if (dynload) {
 181                     tmpNode.scope = this;
 182                 }
 183                 tmpNode.isLeaf = false;
 184                 tmpNode.client_id = client_id;
 185                 if (node.path) {
 186                     tmpNode.path = node.path;
 187                 } else {
 188                     tmpNode.path = '';
 189                 }
 190                 for(var c in node.children) {
 191                     this.build_tree(node.children[c], tmpNode);
 192                 }
 193             } else {
 194                 tmpNode.isLeaf = true;
 195             }
 196         },
 197         view_files: function() {
 198             this.viewbar.set('disabled', false);
 199             if (this.viewmode == 1) {
 200                 this.view_as_icons();
 201             } else if (this.viewmode ==2) {
 202                 this.view_as_list();
 203             } else {
 204                 this.view_as_icons();
 205             }
 206         },
 207         treeview_dynload: function(node, cb) {
 208             var scope = node.scope;
 209             var client_id = scope.options.client_id;
 210             var repository_id = scope.active_repo.id;
 211             scope.request({
 212                 action:'list',
 213                 client_id: client_id,
 214                 repository_id: repository_id,
 215                 path:node.path?node.path:'',
 216                 page:node.page?args.page:'',
 217                 callback: function(id, obj, args) {
 218                     obj.issearchresult = false;
 219                     var list = obj.list;
 220                     scope.viewbar.set('disabled', false);
 221                     scope.parse_repository_options(obj);
 222                     for(k in list) {
 223                         scope.build_tree(list[k], node);
 224                     }
 225                     cb();
 226                 }
 227             }, false);
 228         },
 229         view_as_list: function() {
 230             var scope = this;
 231             var client_id = this.options.client_id;
 232             var dynload = this.active_repo.dynload;
 233             var list = this.filelist;
 234             var panel_id = '#panel-'+client_id;
 235             this.viewmode = 2;
 236             Y.one(panel_id).set('innerHTML', '');
 237
 238             this.print_header();
 239             var tree = Y.Node.create('<div id="treeview-'+client_id+'"></div>');
 240             Y.one(panel_id).appendChild(tree);
 241             this.treeview = new YAHOO.widget.TreeView('treeview-'+client_id);
 242             if (dynload) {
 243                 this.treeview.setDynamicLoad(this.treeview_dynload, 1);
 244             }
 245
 246             for(k in list) {
 247                 this.build_tree(list[k], this.treeview.getRoot());
 248             }
 249             var scope = this;
 250             this.treeview.subscribe('clickEvent', function(e){
 251                 if(e.node.isLeaf){
 252                     var fileinfo = {};
 253                     fileinfo['title'] = e.node.data.filename;
 254                     fileinfo['source'] = e.node.data.source;
 255                     fileinfo['thumbnail'] = e.node.data.thumbnail;
 256                     scope.select_file(fileinfo);
 257                 }
 258             });
 259             this.treeview.draw();
 260         },
 261         view_as_icons: function() {
 262             var scope = this;
 263             var client_id = this.options.client_id;
 264             var list = this.filelist;
 265             var panel_id = '#panel-'+client_id;
 266             this.viewmode = 1;
 267             Y.one(panel_id).set('innerHTML', '');
 268
 269             this.print_header();
 270
 271             var gridpanel = Y.Node.create('<div id="fp-grid-panel-'+client_id+'"></div>');
 272             Y.one('#panel-'+client_id).appendChild(gridpanel);
 273             var count = 0;
 274             for(var k in list) {
 275                 var node = list[k];
 276                 var grid = document.createElement('DIV');
 277                 grid.className='fp-grid';
 278                 // the file name
 279                 var title = document.createElement('DIV');
 280                 title.id = 'grid-title-'+client_id+'-'+String(count);
 281                 title.className = 'label';
 282                 if (node.shorttitle) {
 283                     node.title = node.shorttitle;
 284                 }
 285                 title.innerHTML += '<a href="###"><span>'+node.title+"</span></a>";
 286
 287                 if(node.thumbnail_width){
 288                     grid.style.width = node.thumbnail_width+'px';
 289                     title.style.width = (node.thumbnail_width-10)+'px';
 290                 } else {
 291                     grid.style.width = title.style.width = '90px';
 292                 }
 293                 var frame = document.createElement('DIV');
 294                 frame.style.textAlign='center';
 295                 if(node.thumbnail_height){
 296                     frame.style.height = node.thumbnail_height+'px';
 297                 }
 298                 var img = document.createElement('img');
 299                 img.src = node.thumbnail;
 300                 if(node.thumbnail_alt) {
 301                     img.alt = node.thumbnail_alt;
 302                 }
 303                 if(node.thumbnail_title) {
 304                     img.title = node.thumbnail_title;
 305                 }
 306
 307                 var link = document.createElement('A');
 308                 link.href='###';
 309                 link.id = 'img-id-'+client_id+'-'+String(count);
 310                 if(node.url) {
 311                     // hide
 312                     //grid.innerHTML += '<p><a target="_blank" href="'+node.url+'">'+M.str.repository.preview+'</a></p>';
 313                 }
 314                 link.appendChild(img);
 315                 frame.appendChild(link);
 316                 grid.appendChild(frame);
 317                 grid.appendChild(title);
 318                 gridpanel.appendChild(grid);
 319
 320                 var y_title = Y.one('#'+title.id);
 321                 var y_file = Y.one('#'+link.id);
 322                 var dynload = this.active_repo.dynload;
 323                 if(node.children) {
 324                     y_file.on('click', function(e, p) {
 325                         if(dynload) {
 326                             var params = {'path':p.path};
 327                             scope.list(params);
 328                         }else{
 329                             this.filelist = p.children;
 330                             this.view_files();
 331                         }
 332                     }, this, node);
 333                     y_title.on('click', function(e, p, id){
 334                         var icon = Y.one(id);
 335                         icon.simulate('click');
 336                     }, this, node, '#'+link.id);
 337                 } else {
 338                     var fileinfo = {};
 339                     fileinfo['title'] = list[k].title;
 340                     fileinfo['source'] = list[k].source;
 341                     fileinfo['thumbnail'] = list[k].thumbnail;
 342                     fileinfo['haslicense'] = list[k].haslicense?true:false;
 343                     fileinfo['hasauthor'] = list[k].hasauthor?true:false;
 344                     y_title.on('click', function(e, args) {
 345                         this.select_file(args);
 346                     }, this, fileinfo);
 347                     y_file.on('click', function(e, args) {
 348                         this.select_file(args);
 349                     }, this, fileinfo);
 350                 }
 351                 count++;
 352             }
 353         },
 354         select_file: function(args) {
 355             var client_id = this.options.client_id;
 356             var thumbnail = Y.one('#fp-grid-panel-'+client_id);
 357             if(thumbnail){
 358                 thumbnail.setStyle('display', 'none');
 359             }
 360             var header = Y.one('#fp-header-'+client_id);
 361             if (header) {
 362                 header.setStyle('display', 'none');
 363             }
 364             var footer = Y.one('#fp-footer-'+client_id);
 365             if (footer) {
 366                 footer.setStyle('display', 'none');
 367             }
 368             var path = Y.one('#path-'+client_id);
 369             if(path){
 370                 path.setStyle('display', 'none');
 371             }
 372             var panel = Y.one('#panel-'+client_id);
 373             var form_id = 'fp-rename-form-'+client_id;
 374             var html = '<div class="fp-rename-form" id="'+form_id+'">';
 375             html += '<p><img src="'+args.thumbnail+'" /></p>';
 376             html += '<p><label for="newname-'+client_id+'">'+M.str.repository.saveas+':</label>';
 377             html += '<input type="text" id="newname-'+client_id+'" value="'+args.title+'" /></p>';
 378
 379             var le_checked = '';
 380             var le_style = '';
 381             if (this.options.repositories[this.active_repo.id].return_types == 1) {
 382                 // support external links only
 383                 le_checked = 'checked';
 384                 le_style = ' style="display:none;"';
 385             } else if(this.options.repositories[this.active_repo.id].return_types == 2) {
 386                 // support internal files only
 387                 le_style = ' style="display:none;"';
 388             }
 389             if (this.options.externallink && this.options.env == 'editor') {
 390                 html += '<p'+le_style+'><input type="checkbox" id="linkexternal-'+client_id+'" value="" '+le_checked+' />'+M.str.repository.linkexternal+'</p>';
 391             }
 392
 393             if (!args.hasauthor) {
 394                 // the author of the file
 395                 html += '<p><label for="text-author">'+M.str.repository.author+' :</label>';
 396                 html += '<input id="text-author-'+client_id+'" type="text" name="author" value="'+this.options.author+'" />';
 397                 html += '</p>';
 398             }
 399
 400             if (!args.haslicense) {
 401                 // the license of the file
 402                 var licenses = this.options.licenses;
 403                 html += '<p><label for="select-license-'+client_id+'">'+M.str.repository.chooselicense+' :</label>';
 404                 html += '<select name="license" id="select-license-'+client_id+'">';
 405                 for (var i in licenses) {
 406                     html += '<option value="'+licenses[i].shortname+'">'+licenses[i].fullname+'</option>';
 407                 }
 408                 html += '</select></p>';
 409             }
 410
 411             html += '<p><input type="hidden" id="filesource-'+client_id+'" value="'+args.source+'" />';
 412             html += '<input type="button" id="fp-confirm-'+client_id+'" value="'+M.str.repository.getfile+'" />';
 413             html += '<input type="button" id="fp-cancel-'+client_id+'" value="'+M.str.moodle.cancel+'" /></p>';
 414             html += '</div>';
 415
 416             var getfile_form = Y.Node.create(html);
 417             panel.appendChild(getfile_form);
 418
 419             var getfile = Y.one('#fp-confirm-'+client_id);
 420             getfile.on('click', function(e) {
 421                 var client_id = this.options.client_id;
 422                 var scope = this;
 423                 var repository_id = this.active_repo.id;
 424                 var title = Y.one('#newname-'+client_id).get('value');
 425                 var filesource = Y.one('#filesource-'+client_id).get('value');
 426                 var params = {'title':title, 'source':filesource, 'savepath': this.options.savepath};
 427                 var license = Y.one('#select-license-'+client_id);
 428                 if (license) {
 429                     params['license'] = license.get('value');
 430                 }
 431                 var author = Y.one('#text-author-'+client_id);
 432                 if (author){
 433                     params['author'] = author.get('value');
 434                 }
 435
 436                 if (this.options.env == 'editor') {
 437                     // in editor, images are stored in '/' only
 438                     params.savepath = '/';
 439                     var linkexternal = Y.one('#linkexternal-'+client_id).get('checked');
 440                     if (linkexternal) {
 441                         params['linkexternal'] = 'yes';
 442                     }
 443                 } if (this.options.env == 'url') {
 444                     params['linkexternal'] = 'yes';
 445                 }
 446
 447                 this.wait('download', title);
 448                 this.request({
 449                     action:'download',
 450                     client_id: client_id,
 451                     repository_id: repository_id,
 452                     'params': params,
 453                     callback: function(id, obj, args) {
 454                         if (scope.options.editor_target && scope.options.env=='editor') {
 455                             scope.options.editor_target.value=obj.url;
 456                             scope.options.editor_target.onchange();
 457                         }
 458                         scope.hide();
 459                         obj.client_id = client_id;
 460                         var formcallback_scope = null;
 461                         if (args.scope.options.magicscope) {
 462                             formcallback_scope = args.scope.options.magicscope;
 463                         } else {
 464                             formcallback_scope = args.scope;
 465                         }
 466                         scope.options.formcallback.apply(formcallback_scope, [obj]);
 467                     }
 468                 }, true);
 469             }, this);
 470             var elform = Y.one('#'+form_id);
 471             elform.on('keydown', function(e) {
 472                 if (e.keyCode == 13) {
 473                     getfile.simulate('click');
 474                     e.preventDefault();
 475                 }
 476             }, this);
 477             var cancel = Y.one('#fp-cancel-'+client_id);
 478             cancel.on('click', function(e) {
 479                 this.view_files();
 480             }, this);
 481             var treeview = Y.one('#treeview-'+client_id);
 482             if (treeview){
 483                 treeview.setStyle('display', 'none');
 484             }
 485         },
 486         wait: function(type) {
 487             var panel = Y.one('#panel-'+this.options.client_id);
 488             panel.set('innerHTML', '');
 489             var name = '';
 490             var str = '<div style="text-align:center">';
 491             if(type=='load') {
 492                 str += '<img src="'+M.util.image_url('i/loading')+'" />';
 493                 str += '<p>'+M.str.repository.loading+'</p>';
 494             }else{
 495                 str += '<img src="'+M.util.image_url('i/progressbar')+'" />';
 496                 str += '<p>'+M.str.repository.copying+' <strong>'+name+'</strong></p>';
 497             }
 498             str += '</div>';
 499             try {
 500                 panel.set('innerHTML', str);
 501             } catch(e) {
 502                 alert(e.toString());
 503             }
 504         },
 505         render: function() {
 506             var client_id = this.options.client_id;
 507             var filepicker_id = 'filepicker-'+client_id;
 508             var fpnode = Y.Node.create('<div class="file-picker" id="'+filepicker_id+'"></div>');
 509             Y.one(document.body).appendChild(fpnode);
 510             // render file picker panel
 511             this.mainui = new YAHOO.widget.Panel(filepicker_id, {
 512                 draggable: true,
 513                 close: true,
 514                 underlay: 'none',
 515                 zindex: 9999990,
 516                 monitorresize: false,
 517                 xy: [50, YAHOO.util.Dom.getDocumentScrollTop()+20]
 518             });
 519             var layout = null;
 520             this.mainui.beforeRenderEvent.subscribe(function() {
 521                 YAHOO.util.Event.onAvailable('layout-'+client_id, function() {
 522                     layout = new YAHOO.widget.Layout('layout-'+client_id, {
 523                         height: 480, width: 700,
 524                         units: [
 525                         {position: 'top', height: 32, resize: false,
 526                         body:'<div class="yui-buttongroup fp-viewbar" id="fp-viewbar-'+client_id+'"></div><div class="fp-searchbar" id="search-div-'+client_id+'"></div>', gutter: '2'},
 527                         {position: 'left', width: 200, resize: true, scroll:true,
 528                         body:'<ul class="fp-list" id="fp-list-'+client_id+'"></ul>', gutter: '0 5 0 2', minWidth: 150, maxWidth: 300 },
 529                         {position: 'center', body: '<div class="fp-panel" id="panel-'+client_id+'"></div>',
 530                         scroll: true, gutter: '0 2 0 0' }
 531                         ]
 532                     });
 533                     layout.render();
 534                 });
 535             });
 536
 537             this.mainui.setHeader('File Picker');
 538             this.mainui.setBody('<div id="layout-'+client_id+'"></div>');
 539             this.mainui.render();
 540             this.rendered = true;
 541
 542             var scope = this;
 543             // adding buttons
 544             var view_icons = {label: M.str.repository.iconview, value: 't',
 545                 onclick: {
 546                     fn: function(){
 547                         scope.view_as_icons();
 548                     }
 549                 }
 550             };
 551             var view_listing = {label: M.str.repository.listview, value: 'l',
 552                 onclick: {
 553                     fn: function(){
 554                         scope.view_as_list();
 555                     }
 556                 }
 557             };
 558             this.viewbar = new YAHOO.widget.ButtonGroup({
 559                 id: 'btngroup-'+client_id,
 560                 name: 'buttons',
 561                 disabled: true,
 562                 container: 'fp-viewbar-'+client_id
 563             });
 564             this.viewbar.addButtons([view_icons, view_listing]);
 565             // processing repository listing
 566             var r = this.options.repositories;
 567             Y.on('contentready', function(el) {
 568                 var list = Y.one(el);
 569                 var count = 0;
 570                 for (var i in r) {
 571                     var id = 'repository-'+client_id+'-'+count;
 572                     var link_id = id + '-link';
 573                     list.append('<li id="'+id+'"><a class="fp-repo-name" id="'+link_id+'" href="###">'+r[i].name+'</a></li>');
 574                     Y.one('#'+link_id).prepend('<img src="'+r[i].icon+'" width="16" height="16" />&nbsp;');
 575                     Y.one('#'+link_id).on('click', function(e, scope, repository_id) {
 576                         scope.repository_id = repository_id;
 577                         Y.all(el+' li a').setStyle('backgroundColor', 'transparent');
 578                         e.currentTarget.setStyle('backgroundColor', '#CCC');
 579                         this.list({'repo_id':repository_id});
 580                     }, this /*handler running scope*/, this/*second argument*/, r[i].id/*third argument of handler*/);
 581                     count++;
 582                 }
 583             }, '#fp-list-'+client_id, this /* handler running scope */, '#fp-list-'+client_id /*first argument of handler*/);
 584         },
 585         parse_repository_options: function(data) {
 586             this.filelist = data.list?data.list:null;
 587             this.filepath = data.path?data.path:null;
 588             this.active_repo = {};
 589             this.active_repo.issearchresult = Boolean(data.issearchresult);
 590             this.active_repo.dynload = data.dynload?data.dynload:false;
 591             this.active_repo.pages = Number(data.pages?data.pages:null);
 592             this.active_repo.page = Number(data.page?data.page:null);
 593             this.active_repo.id = data.repo_id?data.repo_id:null;
 594             this.active_repo.nosearch = data.nosearch?true:false;
 595             this.active_repo.norefresh = data.norefresh?true:false;
 596             this.active_repo.nologin = data.nologin?true:false;
 597             this.active_repo.help = data.help?data.help:null;
 598             this.active_repo.manage = data.manage?data.manage:null;
 599         },
 600         print_login: function(data) {
 601             this.parse_repository_options(data);
 602             var client_id = this.options.client_id;
 603             var repository_id = data.repo_id;
 604             var l = this.logindata = data.login;
 605             var loginurl = '';
 606             var panel = Y.one('#panel-'+client_id);
 607             var action = 'login';
 608             if (data['login_btn_action']) {
 609                 action=data['login_btn_action'];
 610             }
 611             var form_id = 'fp-form-'+client_id;
 612             var download_button_id = 'fp-form-download-button-'+client_id;
 613             var search_button_id   = 'fp-form-search-button-'+client_id;
 614             var login_button_id    = 'fp-form-login-button-'+client_id;
 615             var popup_button_id    = 'fp-form-popup-button-'+client_id;
 616
 617             var str = '<div class="fp-login-form">';
 618             str += '<form id="'+form_id+'">';
 619             var has_pop = false;
 620             str +='<table width="100%">';
 621             for(var k in l) {
 622                 str +='<tr>';
 623                 if(l[k].type=='popup') {
 624                     // pop element
 625                     loginurl = l[k].url;
 626                     str += '<td colspan="2"><p class="fp-popup">'+M.str.repository.popup+'</p>';
 627                     str += '<p class="fp-popup"><button id="'+popup_button_id+'">'+M.str.repository.login+'</button>';
 628                     str += '</p></td>';
 629                     action = 'popup';
 630                 }else if(l[k].type=='textarea') {
 631                     // textarea element
 632                     str += '<td colspan="2"><p><textarea id="'+l[k].id+'" name="'+l[k].name+'"></textarea></p></td>';
 633                 }else if(l[k].type=='select') {
 634                     // select element
 635                     str += '<td align="right"><label>'+l[k].label+':</label></td>';
 636                     str += '<td align="left"><select id="'+l[k].id+'" name="'+l[k].name+'">';
 637                     for (i in l[k].options) {
 638                         str += '<option value="'+l[k].options[i].value+'">'+l[k].options[i].label+'</option>';
 639                     }
 640                     str += '</select></td>';
 641                 }else{
 642                     // input element
 643                     var label_id = '';
 644                     var field_id = '';
 645                     var field_value = '';
 646                     if(l[k].id) {
 647                         label_id = ' for="'+l[k].id+'"';
 648                         field_id = ' id="'+l[k].id+'"';
 649                     }
 650                     if (l[k].label) {
 651                         str += '<td align="right" width="30%" valign="center">';
 652                         str += '<label'+label_id+'>'+l[k].label+'</label> </td>';
 653                     } else {
 654                         str += '<td width="30%"></td>';
 655                     }
 656                     if(l[k].value) {
 657                         field_value = ' value="'+l[k].value+'"';
 658                     }
 659                     if(l[k].type=='radio'){
 660                         var list = l[k].value.split('|');
 661                         var labels = l[k].value_label.split('|');
 662                         str += '<td align="left">';
 663                         for(var item in list) {
 664                             str +='<input type="'+l[k].type+'"'+' name="'+l[k].name+'"'+
 665                                 field_id+' value="'+list[item]+'" />'+labels[item]+'<br />';
 666                         }
 667                         str += '</td>';
 668                     }else{
 669                         str += '<td align="left">';
 670                         str += '<input type="'+l[k].type+'"'+' name="'+l[k].name+'"'+field_value+' '+field_id+' />';
 671                         str += '</td>';
 672                     }
 673                 }
 674                 str +='</tr>';
 675             }
 676             str +='</table>';
 677             str += '</form>';
 678
 679             // custom lable text
 680             var btn_label = data['login_btn_label']?data['login_btn_label']:M.str.repository.submit;
 681             if (action != 'popup') {
 682                 str += '<p><input type="button" id="';
 683                 switch (action) {
 684                     case 'search':
 685                         str += search_button_id;
 686                         break;
 687                     case 'download':
 688                         str += download_button_id;
 689                         break;
 690                     default:
 691                         str += login_button_id;
 692                         break;
 693                 }
 694                 str += '" value="'+btn_label+'" /></p>';
 695             }
 696
 697             str += '</div>';
 698
 699             // insert login form
 700             try {
 701                 panel.set('innerHTML', str);
 702             } catch(e) {
 703                 alert(e.toString()+M.str.quiz.xhtml);
 704             }
 705             // register buttons
 706             // process login action
 707             var login_button = Y.one('#'+login_button_id);
 708             var scope = this;
 709             if (login_button) {
 710                 login_button.on('click', function(){
 711                     // collect form data
 712                     var data = this.logindata;
 713                     var scope = this;
 714                     var params = {};
 715                     for (var k in data) {
 716                         if(data[k].type!='popup') {
 717                             var el = Y.one('[name='+data[k].name+']');
 718                             var type = el.get('type');
 719                             params[data[k].name] = '';
 720                             if(type == 'checkbox') {
 721                                 params[data[k].name] = el.get('checked');
 722                             } else {
 723                                 params[data[k].name] = el.get('value');
 724                             }
 725                         }
 726                     }
 727                     // start ajax request
 728                     this.request({
 729                         'params': params,
 730                         'scope': scope,
 731                         'action':'signin',
 732                         'path': '',
 733                         'client_id': client_id,
 734                         'repository_id': repository_id,
 735                         'callback': function(id, o, args) {
 736                             scope.parse_repository_options(o);
 737                             scope.view_files();
 738                             if (o.msg) {
 739                                 // do something
 740                             }
 741                         }
 742                     }, true);
 743                 }, this);
 744             }
 745             var search_button = Y.one('#'+search_button_id);
 746             if (search_button) {
 747                 search_button.on('click', function(){
 748                     var data = this.logindata;
 749                     var params = {};
 750
 751                     for (var k in data) {
 752                         if(data[k].type!='popup') {
 753                             var el = document.getElementsByName(data[k].name)[0];
 754                             params[data[k].name] = '';
 755                             if(el.type == 'checkbox') {
 756                                 params[data[k].name] = el.checked;
 757                             } else if(el.type == 'radio') {
 758                                 var tmp = document.getElementsByName(data[k].name);
 759                                 for(var i in tmp) {
 760                                     if (tmp[i].checked) {
 761                                         params[data[k].name] = tmp[i].value;
 762                                     }
 763                                 }
 764                             } else {
 765                                 params[data[k].name] = el.value;
 766                             }
 767                         }
 768                     }
 769                     this.request({
 770                             scope: scope,
 771                             action:'search',
 772                             client_id: client_id,
 773                             repository_id: repository_id,
 774                             form: {id: 'fp-form-'+scope.options.client_id,upload:false,useDisabled:true},
 775                             callback: function(id, o, args) {
 776                                 o.issearchresult = true;
 777                                 scope.parse_repository_options(o);
 778                                 scope.view_files();
 779                             }
 780                     }, true);
 781                 }, this);
 782             }
 783             var download_button = Y.one('#'+download_button_id);
 784             if (download_button) {
 785                 download_button.on('click', function(){
 786                     alert('download');
 787                 });
 788             }
 789             var popup_button = Y.one('#'+popup_button_id);
 790             if (popup_button) {
 791                 popup_button.on('click', function(e){
 792                     M.core_filepicker.active_filepicker = this;
 793                     window.open(loginurl, 'repo_auth', 'location=0,status=0,width=500,height=300');
 794                     e.preventDefault();
 795                 }, this);
 796             }
 797             var elform = Y.one('#'+form_id);
 798             elform.on('keydown', function(e) {
 799                 if (e.keyCode == 13) {
 800                     switch (action) {
 801                         case 'search':
 802                             search_button.simulate('click');
 803                             break;
 804                         default:
 805                             login_button.simulate('click');
 806                             break;
 807                     }
 808                     e.preventDefault();
 809                 }
 810             }, this);
 811
 812         },
 813         search: function(args) {
 814             var data = this.logindata;
 815             var params = {};
 816
 817             for (var k in data) {
 818                 if(data[k].type!='popup') {
 819                     var el = document.getElementsByName(data[k].name)[0];
 820                     params[data[k].name] = '';
 821                     if(el.type == 'checkbox') {
 822                         params[data[k].name] = el.checked;
 823                     } else if(el.type == 'radio') {
 824                         var tmp = document.getElementsByName(data[k].name);
 825                         for(var i in tmp) {
 826                             if (tmp[i].checked) {
 827                                 params[data[k].name] = tmp[i].value;
 828                             }
 829                         }
 830                     } else {
 831                         params[data[k].name] = el.value;
 832                     }
 833                 }
 834             }
 835             this.request({
 836                     scope: scope,
 837                     action:'search',
 838                     client_id: client_id,
 839                     repository_id: repository_id,
 840                     form: {id: 'fp-form-'+scope.options.client_id,upload:false,useDisabled:true},
 841                     callback: function(id, o, args) {
 842                         o.issearchresult = true;
 843                         scope.parse_repository_options(o);
 844                         scope.view_files();
 845                     }
 846             }, true);
 847         },
 848         list: function(args) {
 849             var scope = this;
 850             if (!args) {
 851                 args = {};
 852             }
 853             if (!args.repo_id) {
 854                 args.repo_id = scope.active_repo.id;
 855             }
 856             scope.request({
 857                 action:'list',
 858                 client_id: scope.options.client_id,
 859                 repository_id: args.repo_id,
 860                 path:args.path?args.path:'',
 861                 page:args.page?args.page:'',
 862                 callback: function(id, obj, args) {
 863                     if (obj.login) {
 864                         scope.viewbar.set('disabled', true);
 865                         scope.print_login(obj);
 866                     } else if (obj.upload) {
 867                         scope.viewbar.set('disabled', true);
 868                         scope.parse_repository_options(obj);
 869                         scope.create_upload_form(obj);
 870
 871                     } else if (obj.iframe) {
 872
 873                     } else if (obj.list) {
 874                         obj.issearchresult = false;
 875                         scope.viewbar.set('disabled', false);
 876                         scope.parse_repository_options(obj);
 877                         scope.view_files();
 878                     }
 879                     if (obj.msg) {
 880                         // TODO: Print message
 881                     }
 882                 }
 883             }, true);
 884         },
 885         create_upload_form: function(data) {
 886             var client_id = this.options.client_id;
 887             Y.one('#panel-'+client_id).set('innerHTML', '');
 888
 889             this.print_header();
 890             var id = data.upload.id+'_'+client_id;
 891             var str = '<div id="'+id+'_div" class="fp-upload-form">';
 892             str += '<form id="'+id+'" method="POST">';
 893             str += '<table border=1>';
 894             str += '<tr><td>';
 895             str += '<label for="'+id+'_file">'+data.upload.label+': </label></td>';
 896             str += '<td><input type="file" id="'+id+'_file" name="repo_upload_file" />';
 897             str += '<input type="hidden" name="itemid" value="'+this.options.itemid+'" /></tr>';
 898             str += '<tr>';
 899             str += '<td><label>'+M.str.repository.author+': </label></td>';
 900             str += '<td><input type="text" name="author" value="'+this.options.author+'" /></td>';
 901             str += '</tr>';
 902             str += '<tr>';
 903             str += '<td>'+M.str.repository.chooselicense+': </td>';
 904             str += '<td>';
 905             var licenses = this.options.licenses;
 906             str += '<select name="license" id="select-license-'+client_id+'">';
 907             for (var i in licenses) {
 908                 str += '<option value="'+licenses[i].shortname+'">'+licenses[i].fullname+'</option>';
 909             }
 910             str += '</select>';
 911             str += '</td>';
 912             str += '</tr></table>';
 913             str += '</form>';
 914             str += '<div class="fp-upload-btn"><button id="'+id+'_action">'+M.str.repository.upload+'...</button></div>';
 915             str += '</div>';
 916             var upload_form = Y.Node.create(str);
 917             Y.one('#panel-'+client_id).appendChild(upload_form);
 918             var scope = this;
 919             Y.one('#'+id+'_action').on('click', function(e) {
 920                 e.preventDefault();
 921                 Y.use('io-upload-iframe', function() {
 922                     scope.request({
 923                             scope: scope,
 924                             action:'upload',
 925                             client_id: client_id,
 926                             params: {'savepath':scope.options.savepath},
 927                             repository_id: scope.active_repo.id,
 928                             form: {id: id, upload:true},
 929                             callback: function(id, o, args) {
 930                                 if (scope.options.editor_target&&scope.options.env=='editor') {
 931                                     scope.options.editor_target.value=o.url;
 932                                     scope.options.editor_target.onchange();
 933                                 }
 934                                 scope.hide();
 935                                 o.client_id = client_id;
 936                                 var formcallback_scope = null;
 937                                 if (args.scope.options.magicscope) {
 938                                     formcallback_scope = args.scope.options.magicscope;
 939                                 } else {
 940                                     formcallback_scope = args.scope;
 941                                 }
 942                                 scope.options.formcallback.apply(formcallback_scope, [o]);
 943                             }
 944                     }, true);
 945                 });
 946             }, this);
 947         },
 948         print_header: function() {
 949             var r = this.active_repo;
 950             var scope = this;
 951             var client_id = this.options.client_id;
 952             var repository_id = this.active_repo.id;
 953             var panel = Y.one('#panel-'+client_id);
 954             var str = '<div id="fp-header-'+client_id+'">';
 955             str += '<div class="fp-toolbar" id="repo-tb-'+client_id+'"></div>';
 956             str += '</div>';
 957             var head = Y.Node.create(str);
 958             panel.appendChild(head);
 959             //if(this.active_repo.pages < 8){
 960                 this.print_paging('header');
 961             //}
 962
 963
 964             var toolbar = Y.one('#repo-tb-'+client_id);
 965
 966             if(!r.nosearch) {
 967                 var html = '<a href="###"><img src="'+M.util.image_url('a/search')+'" /> '+M.str.repository.search+'</a>';
 968                 var search = Y.Node.create(html);
 969                 search.on('click', function() {
 970                     scope.request({
 971                         scope: scope,
 972                         action:'searchform',
 973                         repository_id: repository_id,
 974                         callback: function(id, obj, args) {
 975                             var scope = args.scope;
 976                             var client_id = scope.options.client_id;
 977                             var repository_id = scope.active_repo.id;
 978                             var container = document.getElementById('fp-search-dlg');
 979                             if(container) {
 980                                 container.innerHTML = '';
 981                                 container.parentNode.removeChild(container);
 982                             }
 983                             var container = document.createElement('DIV');
 984                             container.id = 'fp-search-dlg';
 985
 986                             var dlg_title = document.createElement('DIV');
 987                             dlg_title.className = 'hd';
 988                             dlg_title.innerHTML = 'filepicker';
 989
 990                             var dlg_body = document.createElement('DIV');
 991                             dlg_body.className = 'bd';
 992
 993                             var sform = document.createElement('FORM');
 994                             sform.method = 'POST';
 995                             sform.id = "fp-search-form";
 996                             sform.innerHTML = obj.form;
 997
 998                             dlg_body.appendChild(sform);
 999                             container.appendChild(dlg_title);
1000                             container.appendChild(dlg_body);
1001                             Y.one(document.body).appendChild(container);
1002                             var search_dialog= null;
1003                             function dialog_handler() {
1004                                 scope.viewbar.set('disabled', false);
1005                                 scope.request({
1006                                         scope: scope,
1007                                         action:'search',
1008                                         client_id: client_id,
1009                                         repository_id: repository_id,
1010                                         form: {id: 'fp-search-form',upload:false,useDisabled:true},
1011                                         callback: function(id, o, args) {
1012                                             scope.parse_repository_options(o);
1013                                             scope.view_files();
1014                                         }
1015                                 }, true);
1016                                 search_dialog.cancel();
1017                             }
1018
1019                             search_dialog = new YAHOO.widget.Dialog("fp-search-dlg", {
1020                                postmethod: 'async',
1021                                draggable: true,
1022                                width : "30em",
1023                                fixedcenter : true,
1024                                zindex: 9999991,
1025                                visible : false,
1026                                constraintoviewport : true,
1027                                buttons: [
1028                                {
1029                                    text:M.str.repository.submit,
1030                                    handler:dialog_handler,
1031                                    isDefault:true
1032                                }, {
1033                                    text:M.str.moodle.cancel,
1034                                    handler:function(){
1035                                        this.destroy()
1036                                    }
1037                                }]
1038                             });
1039                             search_dialog.render();
1040                             search_dialog.show();
1041                         }
1042                     });
1043                 },this);
1044                 toolbar.appendChild(search);
1045             }
1046             // weather we use cache for this instance, this button will reload listing anyway
1047             if(!r.norefresh) {
1048                 var html = '<a href="###"><img src="'+M.util.image_url('a/refresh')+'" /> '+M.str.repository.refresh+'</a>';
1049                 var refresh = Y.Node.create(html);
1050                 refresh.on('click', function() {
1051                     this.list();
1052                 }, this);
1053                 toolbar.appendChild(refresh);
1054             }
1055             if(!r.nologin) {
1056                 var html = '<a href="###"><img src="'+M.util.image_url('a/logout')+'" /> '+M.str.repository.logout+'</a>';
1057                 var logout = Y.Node.create(html);
1058                 logout.on('click', function() {
1059                     this.request({
1060                         action:'logout',
1061                         client_id: client_id,
1062                         repository_id: repository_id,
1063                         path:'',
1064                         callback: function(id, obj, args) {
1065                             scope.viewbar.set('disabled', true);
1066                             scope.print_login(obj);
1067                         }
1068                     }, true);
1069                 }, this);
1070                 toolbar.appendChild(logout);
1071             }
1072
1073             if(r.manage) {
1074                 var mgr = document.createElement('A');
1075                 mgr.href = r.manage;
1076                 mgr.target = "_blank";
1077                 mgr.innerHTML = '<img src="'+M.util.image_url('a/setting')+'" /> '+M.str.repository.manageurl;
1078                 toolbar.appendChild(mgr);
1079             }
1080             if(r.help) {
1081                 var help = document.createElement('A');
1082                 help.href = r.help;
1083                 help.target = "_blank";
1084                 help.innerHTML = '<img src="'+M.util.image_url('a/help')+'" /> '+M.str.repository.help;
1085                 toolbar.appendChild(help);
1086             }
1087
1088             // only show in icons view
1089             if (this.viewmode == 1) {
1090                 this.print_path();
1091             }
1092         },
1093         get_page_button: function(page) {
1094             var r = this.active_repo;
1095             var css = '';
1096             if (page == r.page) {
1097                 css = 'class="cur_page" ';
1098             }
1099             var str = '<a '+css+'href="###" id="repo-page-'+page+'">';
1100             return str;
1101         },
1102         print_paging: function(html_id) {
1103             var client_id = this.options.client_id;
1104             var scope = this;
1105             var r = this.active_repo;
1106             var str = '';
1107             var action = '';
1108             if(r.pages) {
1109                 str += '<div class="fp-paging" id="paging-'+html_id+'-'+client_id+'">';
1110                 str += this.get_page_button(1)+'1</a> ';
1111
1112                 var span = 5;
1113                 var ex = (span-1)/2;
1114
1115                 if (r.page+ex>=r.pages) {
1116                     var max = r.pages;
1117                 } else {
1118                     if (r.page<span) {
1119                         var max = span;
1120                     } else {
1121                         var max = r.page+ex;
1122                     }
1123                 }
1124
1125                 // won't display upper boundary
1126                 if (r.page >= span) {
1127                     str += ' ... ';
1128                     for(var i=r.page-ex; i<max; i++) {
1129                         str += this.get_page_button(i);
1130                         str += String(i);
1131                         str += '</a> ';
1132                     }
1133                 } else {
1134                     // this very first elements
1135                     for(var i = 2; i < max; i++) {
1136                         str += this.get_page_button(i);
1137                         str += String(i);
1138                         str += '</a> ';
1139                     }
1140                 }
1141
1142                 // won't display upper boundary
1143                 if (max==r.pages) {
1144                     str += this.get_page_button(r.pages)+r.pages+'</a>';
1145                 } else {
1146                     str += this.get_page_button(max)+max+'</a>';
1147                     str += ' ... '+this.get_page_button(r.pages)+r.pages+'</a>';
1148                 }
1149                 str += '</div>';
1150             }
1151             if (str) {
1152                 var a = Y.Node.create(str);
1153                 Y.one('#fp-header-'+client_id).appendChild(a);
1154
1155                 Y.all('#fp-header-'+client_id+' .fp-paging a').each(
1156                     function(node, id) {
1157                         node.on('click', function(e) {
1158                             var id = node.get('id');
1159                             var re = new RegExp("repo-page-(\\d+)", "i");
1160                             var result = id.match(re);
1161                             var args = {};
1162                             args.page = result[1];
1163                             if (scope.active_repo.issearchresult) {
1164                                 scope.request({
1165                                         scope: scope,
1166                                         action:'search',
1167                                         client_id: client_id,
1168                                         repository_id: r.id,
1169                                         params: {'page':result[1]},
1170                                         callback: function(id, o, args) {
1171                                             o.issearchresult = true;
1172                                             scope.parse_repository_options(o);
1173                                             scope.view_files();
1174                                         }
1175                                 }, true);
1176
1177                             } else {
1178                                 scope.list(args);
1179                             }
1180                         });
1181                     });
1182             }
1183         },
1184         print_path: function() {
1185             var client_id = this.options.client_id;
1186             if (this.viewmode == 2) {
1187                 return;
1188             }
1189             var panel = Y.one('#panel-'+client_id);
1190             var p = this.filepath;
1191             if (p && p.length!=0) {
1192                 var path = Y.Node.create('<div id="path-'+client_id+'" class="fp-pathbar"></div>');
1193                 panel.appendChild(path);
1194                 for(var i = 0; i < p.length; i++) {
1195                     var link_path = p[i].path;
1196                     var link = document.createElement('A');
1197                     link.href = "###";
1198                     link.innerHTML = p[i].name;
1199                     link.id = 'path-node-'+client_id+'-'+i;
1200                     var sep = Y.Node.create('<span>/</span>');
1201                     path.appendChild(link);
1202                     path.appendChild(sep);
1203                     Y.one('#'+link.id).on('click', function(Y, path){
1204                         this.list({'path':path});
1205                         }, this, link_path)
1206                 }
1207             }
1208         },
1209         hide: function() {
1210             this.mainui.hide();
1211         },
1212         show: function() {
1213             if (this.rendered) {
1214                 var panel = Y.one('#panel-'+this.options.client_id);
1215                 panel.set('innerHTML', '');
1216                 this.mainui.show();
1217             } else {
1218                 this.launch();
1219             }
1220         },
1221         launch: function() {
1222             this.render();
1223         }
1224     });
1225
1226     M.core_filepicker.instances[options.client_id] = new FilePickerHelper(options);
1227 };