files/renderer.php

   1 <?php
   2 ///////////////////////////////////////////////////////////////////////////
   3 //                                                                       //
   4 // This file is part of Moodle - http://moodle.org/                      //
   5 // Moodle - Modular Object-Oriented Dynamic Learning Environment         //
   6 //                                                                       //
   7 // Moodle is free software: you can redistribute it and/or modify        //
   8 // it under the terms of the GNU General Public License as published by  //
   9 // the Free Software Foundation, either version 3 of the License, or     //
  10 // (at your option) any later version.                                   //
  11 //                                                                       //
  12 // Moodle is distributed in the hope that it will be useful,             //
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of        //
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         //
  15 // GNU General Public License for more details.                          //
  16 //                                                                       //
  17 // You should have received a copy of the GNU General Public License     //
  18 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.       //
  19 //                                                                       //
  20 ///////////////////////////////////////////////////////////////////////////
  21
  22 defined('MOODLE_INTERNAL') || die();
  23
  24 /**
  25  * Rendering of files viewer related widgets.
  26  * @package   core
  27  * @subpackage file
  28  * @copyright 2010 Dongsheng Cai
  29  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  30  * @since     Moodle 2.0
  31  */
  32
  33 /**
  34  * File browser render
  35  *
  36  * @copyright 2010 Dongsheng Cai
  37  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  38  * @since     Moodle 2.0
  39  */
  40 class core_files_renderer extends plugin_renderer_base {
  41
  42     public function files_tree_viewer(file_info $file_info, array $options = null) {
  43         $tree = new files_tree_viewer($file_info, $options);
  44         return $this->render($tree);
  45     }
  46
  47     public function render_files_tree_viewer(files_tree_viewer $tree) {
  48         $html = $this->output->heading_with_help(get_string('coursefiles'), 'courselegacyfiles', 'moodle');
  49
  50         $html .= $this->output->container_start('coursefilesbreadcrumb');
  51         foreach($tree->path as $path) {
  52             $html .= $path;
  53             $html .= ' / ';
  54         }
  55         $html .= $this->output->container_end();
  56
  57         $html .= $this->output->box_start();
  58         $table = new html_table();
  59         $table->head = array(get_string('name'), get_string('lastmodified'), get_string('size', 'repository'), get_string('type', 'repository'));
  60         $table->align = array('left', 'left', 'left', 'left');
  61         $table->width = '100%';
  62         $table->data = array();
  63
  64         foreach ($tree->tree as $file) {
  65             $filedate = $filesize = $filetype = '';
  66             if ($file['filedate']) {
  67                 $filedate = userdate($file['filedate'], get_string('strftimedatetimeshort', 'langconfig'));
  68             }
  69             if (empty($file['isdir'])) {
  70                 if ($file['filesize']) {
  71                     $filesize = display_size($file['filesize']);
  72                 }
  73                 $fileicon = file_file_icon($file, 24);
  74                 $filetype = get_mimetype_description($file);
  75             } else {
  76                 $fileicon = file_folder_icon(24);
  77             }
  78             $table->data[] = array(
  79                 html_writer::link($file['url'], $this->output->pix_icon($fileicon, get_string('icon')) . ' ' . $file['filename']),
  80                 $filedate,
  81                 $filesize,
  82                 $filetype
  83                 );
  84         }
  85
  86         $html .= html_writer::table($table);
  87         $html .= $this->output->single_button(new moodle_url('/files/coursefilesedit.php', array('contextid'=>$tree->context->id)), get_string('coursefilesedit'), 'get');
  88         $html .= $this->output->box_end();
  89         return $html;
  90     }
  91
  92     /**
  93      * Prints the file manager and initializes all necessary libraries
  94      *
  95      * <pre>
  96      * $fm = new form_filemanager($options);
  97      * $output = get_renderer('core', 'files');
  98      * echo $output->render($fm);
  99      * </pre>
 100      *
 101      * @param form_filemanager $fm File manager to render
 102      * @return string HTML fragment
 103      */
 104     public function render_form_filemanager($fm) {
 105         static $filemanagertemplateloaded;
 106         $html = $this->fm_print_generallayout($fm);
 107         $module = array(
 108             'name'=>'form_filemanager',
 109             'fullpath'=>'/lib/form/filemanager.js',
 110             'requires' => array('moodle-core-notification-dialogue', 'core_filepicker', 'base', 'io-base', 'node', 'json', 'core_dndupload', 'panel', 'resize-plugin', 'dd-plugin'),
 111             'strings' => array(
 112                 array('error', 'moodle'), array('info', 'moodle'), array('confirmdeletefile', 'repository'),
 113                 array('draftareanofiles', 'repository'), array('entername', 'repository'), array('enternewname', 'repository'),
 114                 array('invalidjson', 'repository'), array('popupblockeddownload', 'repository'),
 115                 array('unknownoriginal', 'repository'), array('confirmdeletefolder', 'repository'),
 116                 array('confirmdeletefilewithhref', 'repository'), array('confirmrenamefolder', 'repository'),
 117                 array('confirmrenamefile', 'repository'), array('newfolder', 'repository'), array('edit', 'moodle')
 118             )
 119         );
 120         if (empty($filemanagertemplateloaded)) {
 121             $filemanagertemplateloaded = true;
 122             $this->page->requires->js_init_call('M.form_filemanager.set_templates',
 123                     array($this->filemanager_js_templates()), true, $module);
 124         }
 125         $this->page->requires->js_init_call('M.form_filemanager.init', array($fm->options), true, $module);
 126
 127         // non javascript file manager
 128         $html .= '<noscript>';
 129         $html .= "<div><object type='text/html' data='".$fm->get_nonjsurl()."' height='160' width='600' style='border:1px solid #000'></object></div>";
 130         $html .= '</noscript>';
 131
 132
 133         return $html;
 134     }
 135
 136     /**
 137      * Returns html for displaying one file manager
 138      *
 139      * The main element in HTML must have id="filemanager-{$client_id}" and
 140      * class="filemanager fm-loading";
 141      * After all necessary code on the page (both html and javascript) is loaded,
 142      * the class fm-loading will be removed and added class fm-loaded;
 143      * The main element (class=filemanager) will be assigned the following classes:
 144      * 'fm-maxfiles' - when filemanager has maximum allowed number of files;
 145      * 'fm-nofiles' - when filemanager has no files at all (although there might be folders);
 146      * 'fm-noitems' - when current view (folder) has no items - neither files nor folders;
 147      * 'fm-updating' - when current view is being updated (usually means that loading icon is to be displayed);
 148      * 'fm-nomkdir' - when 'Make folder' action is unavailable (empty($fm->options->subdirs) == true)
 149      *
 150      * Element with class 'filemanager-container' will be holding evens for dnd upload (dragover, etc.).
 151      * It will have class:
 152      * 'dndupload-ready' - when a file is being dragged over the browser
 153      * 'dndupload-over' - when file is being dragged over this filepicker (additional to 'dndupload-ready')
 154      * 'dndupload-uploading' - during the upload process (note that after dnd upload process is
 155      * over, the file manager will refresh the files list and therefore will have for a while class
 156      * fm-updating. Both waiting processes should look similar so the images don't jump for user)
 157      *
 158      * If browser supports Drag-and-drop, the body element will have class 'dndsupported',
 159      * otherwise - 'dndnotsupported';
 160      *
 161      * Element with class 'fp-content' will be populated with files list;
 162      * Element with class 'fp-btn-add' will hold onclick event for adding a file (opening filepicker);
 163      * Element with class 'fp-btn-mkdir' will hold onclick event for adding new folder;
 164      * Element with class 'fp-btn-download' will hold onclick event for download action;
 165      *
 166      * Element with class 'fp-path-folder' is a template for one folder in path toolbar.
 167      * It will hold mouse click event and will be assigned classes first/last/even/odd respectfully.
 168      * Parent element will receive class 'empty' when there are no folders to be displayed;
 169      * The content of subelement with class 'fp-path-folder-name' will be substituted with folder name;
 170      *
 171      * Element with class 'fp-viewbar' will have the class 'enabled' or 'disabled' when view mode
 172      * can be changed or not;
 173      * Inside element with class 'fp-viewbar' there are expected elements with classes
 174      * 'fp-vb-icons', 'fp-vb-tree' and 'fp-vb-details'. They will handle onclick events to switch
 175      * between the view modes, the last clicked element will have the class 'checked';
 176      *
 177      * @param form_filemanager $fm
 178      * @return string
 179      */
 180     private function fm_print_generallayout($fm) {
 181         global $OUTPUT;
 182         $options = $fm->options;
 183         $client_id = $options->client_id;
 184         $straddfile  = get_string('addfile', 'repository');
 185         $strmakedir  = get_string('makeafolder', 'moodle');
 186         $strdownload = get_string('downloadfolder', 'repository');
 187         $strloading  = get_string('loading', 'repository');
 188         $strdroptoupload = get_string('droptoupload', 'moodle');
 189         $icon_progress = $OUTPUT->pix_icon('i/loading_small', $strloading).'';
 190         $restrictions = $this->fm_print_restrictions($fm);
 191         $strdndnotsupported = get_string('dndnotsupported_insentence', 'moodle').$OUTPUT->help_icon('dndnotsupported');
 192         $strdndenabledinbox = get_string('dndenabled_inbox', 'moodle');
 193         $loading = get_string('loading', 'repository');
 194         $straddfiletext = get_string('addfiletext', 'repository');
 195         $strcreatefolder = get_string('createfolder', 'repository');
 196         $strdownloadallfiles = get_string('downloadallfiles', 'repository');
 197
 198         $html = '
 199 <div id="filemanager-'.$client_id.'" class="filemanager fm-loading">
 200     <div class="fp-restrictions">
 201         '.$restrictions.'
 202         <span class="dnduploadnotsupported-message"> - '.$strdndnotsupported.' </span>
 203     </div>
 204     <div class="fp-navbar">
 205         <div class="filemanager-toolbar">
 206             <div class="fp-toolbar">
 207                 <div class="fp-btn-add">
 208                     <a role="button" title="' . $straddfile . '" href="#">
 209                         <img src="' . $this->pix_url('a/add_file') . '" alt="' . $straddfiletext . '" />
 210                     </a>
 211                 </div>
 212                 <div class="fp-btn-mkdir">
 213                     <a role="button" title="' . $strmakedir . '" href="#">
 214                         <img src="' . $this->pix_url('a/create_folder') . '" alt="' . $strcreatefolder . '" />
 215                     </a>
 216                 </div>
 217                 <div class="fp-btn-download">
 218                     <a role="button" title="' . $strdownload . '" href="#">
 219                         <img src="' . $this->pix_url('a/download_all').'" alt="' . $strdownloadallfiles . '" />
 220                     </a>
 221                 </div>
 222                 <img class="fp-img-downloading" src="'.$this->pix_url('i/loading_small').'" alt="" />
 223             </div>
 224             <div class="fp-viewbar">
 225                 <a title="'. get_string('displayicons', 'repository') .'" class="fp-vb-icons" href="#">
 226                     <img alt="'. get_string('displayasicons', 'repository') .'" src="'. $this->pix_url('fp/view_icon_active', 'theme') .'" />
 227                 </a>
 228                 <a title="'. get_string('displaydetails', 'repository') .'" class="fp-vb-details" href="#">
 229                     <img alt="'. get_string('displayasdetails', 'repository') .'" src="'. $this->pix_url('fp/view_list_active', 'theme') .'" />
 230                 </a>
 231                 <a title="'. get_string('displaytree', 'repository') .'" class="fp-vb-tree" href="#">
 232                     <img alt="'. get_string('displayastree', 'repository') .'" src="'. $this->pix_url('fp/view_tree_active', 'theme') .'" />
 233                 </a>
 234             </div>
 235         </div>
 236         <div class="fp-pathbar">
 237             <span class="fp-path-folder"><a class="fp-path-folder-name" href="#"></a></span>
 238         </div>
 239     </div>
 240     <div class="filemanager-loading mdl-align">'.$icon_progress.'</div>
 241     <div class="filemanager-container" >
 242         <div class="fm-content-wrapper">
 243             <div class="fp-content"></div>
 244             <div class="fm-empty-container">
 245                 <div class="dndupload-message">'.$strdndenabledinbox.'<br/><div class="dndupload-arrow"></div></div>
 246             </div>
 247             <div class="dndupload-target">'.$strdroptoupload.'<br/><div class="dndupload-arrow"></div></div>
 248             <div class="dndupload-progressbars"></div>
 249             <div class="dndupload-uploadinprogress">'.$icon_progress.'</div>
 250         </div>
 251         <div class="filemanager-updating">'.$icon_progress.'</div>
 252     </div>
 253 </div>';
 254         return $html;
 255     }
 256
 257     /**
 258      * FileManager JS template for displaying one file in 'icon view' mode.
 259      *
 260      * Except for elements described in fp_js_template_iconfilename, this template may also
 261      * contain element with class 'fp-contextmenu'. If context menu is available for this
 262      * file, the top element will receive the additional class 'fp-hascontextmenu' and
 263      * the element with class 'fp-contextmenu' will hold onclick event for displaying
 264      * the context menu.
 265      *
 266      * @see fp_js_template_iconfilename()
 267      * @return string
 268      */
 269     private function fm_js_template_iconfilename() {
 270         $rv = '
 271 <div class="fp-file">
 272     <a href="#">
 273     <div style="position:relative;">
 274         <div class="fp-thumbnail"></div>
 275         <div class="fp-reficons1"></div>
 276         <div class="fp-reficons2"></div>
 277     </div>
 278     <div class="fp-filename-field">
 279         <div class="fp-filename"></div>
 280     </div>
 281     </a>
 282     <a class="fp-contextmenu" href="#">'.$this->pix_icon('i/menu', '▶').'</a>
 283 </div>';
 284         return $rv;
 285     }
 286
 287     /**
 288      * FileManager JS template for displaying file name in 'table view' and 'tree view' modes.
 289      *
 290      * Except for elements described in fp_js_template_listfilename, this template may also
 291      * contain element with class 'fp-contextmenu'. If context menu is available for this
 292      * file, the top element will receive the additional class 'fp-hascontextmenu' and
 293      * the element with class 'fp-contextmenu' will hold onclick event for displaying
 294      * the context menu.
 295      *
 296      * @todo MDL-32736 remove onclick="return false;"
 297      * @see fp_js_template_listfilename()
 298      * @return string
 299      */
 300     private function fm_js_template_listfilename() {
 301         $rv = '
 302 <span class="fp-filename-icon">
 303     <a href="#">
 304     <span class="fp-icon"></span>
 305     <span class="fp-reficons1"></span>
 306     <span class="fp-reficons2"></span>
 307     <span class="fp-filename"></span>
 308     </a>
 309     <a class="fp-contextmenu" href="#" onclick="return false;">'.$this->pix_icon('i/menu', '▶').'</a>
 310 </span>';
 311         return $rv;
 312     }
 313
 314     /**
 315      * FileManager JS template for displaying 'Make new folder' dialog.
 316      *
 317      * Must be wrapped in an element, CSS for this element must define width and height of the window;
 318      *
 319      * Must have one input element with type="text" (for users to enter the new folder name);
 320      *
 321      * content of element with class 'fp-dlg-curpath' will be replaced with current path where
 322      * new folder is about to be created;
 323      * elements with classes 'fp-dlg-butcreate' and 'fp-dlg-butcancel' will hold onclick events;
 324      *
 325      * @return string
 326      */
 327     private function fm_js_template_mkdir() {
 328         $rv = '
 329 <div class="filemanager fp-mkdir-dlg" role="dialog" aria-live="assertive" aria-labelledby="fp-mkdir-dlg-title">
 330     <div class="fp-mkdir-dlg-text">
 331         <label id="fp-mkdir-dlg-title">' . get_string('newfoldername', 'repository') . '</label><br/>
 332         <input type="text" />
 333     </div>
 334     <button class="fp-dlg-butcreate btn-primary btn">'.get_string('makeafolder').'</button>
 335     <button class="fp-dlg-butcancel btn-cancel btn">'.get_string('cancel').'</button>
 336 </div>';
 337         return $rv;
 338     }
 339
 340     /**
 341      * FileManager JS template for error/info message displayed as a separate popup window.
 342      *
 343      * @see fp_js_template_message()
 344      * @return string
 345      */
 346     private function fm_js_template_message() {
 347         return $this->fp_js_template_message();
 348     }
 349
 350     /**
 351      * FileManager JS template for window with file information/actions.
 352      *
 353      * All content must be enclosed in one element, CSS for this class must define width and
 354      * height of the window;
 355      *
 356      * Thumbnail image will be added as content to the element with class 'fp-thumbnail';
 357      *
 358      * Inside the window the elements with the following classnames must be present:
 359      * 'fp-saveas', 'fp-author', 'fp-license', 'fp-path'. Inside each of them must be
 360      * one input element (or select in case of fp-license and fp-path). They may also have labels.
 361      * The elements will be assign with class 'uneditable' and input/select element will become
 362      * disabled if they are not applicable for the particular file;
 363      *
 364      * There may be present elements with classes 'fp-original', 'fp-datemodified', 'fp-datecreated',
 365      * 'fp-size', 'fp-dimensions', 'fp-reflist'. They will receive additional class 'fp-unknown' if
 366      * information is unavailable. If there is information available, the content of embedded
 367      * element with class 'fp-value' will be substituted with the value;
 368      *
 369      * The value of Original ('fp-original') is loaded in separate request. When it is applicable
 370      * but not yet loaded the 'fp-original' element receives additional class 'fp-loading';
 371      *
 372      * The value of 'Aliases/Shortcuts' ('fp-reflist') is also loaded in separate request. When it
 373      * is applicable but not yet loaded the 'fp-original' element receives additional class
 374      * 'fp-loading'. The string explaining that XX references exist will replace content of element
 375      * 'fp-refcount'. Inside '.fp-reflist .fp-value' each reference will be enclosed in <li>;
 376      *
 377      * Elements with classes 'fp-file-update', 'fp-file-download', 'fp-file-delete', 'fp-file-zip',
 378      * 'fp-file-unzip', 'fp-file-setmain' and 'fp-file-cancel' will hold corresponding onclick
 379      * events (there may be several elements with class 'fp-file-cancel');
 380      *
 381      * When confirm button is pressed and file is being selected, the top element receives
 382      * additional class 'loading'. It is removed when response from server is received.
 383      *
 384      * When any of the input fields is changed, the top element receives class 'fp-changed';
 385      * When current file can be set as main - top element receives class 'fp-cansetmain';
 386      * When current file is folder/zip/file - top element receives respectfully class
 387      * 'fp-folder'/'fp-zip'/'fp-file';
 388      *
 389      * @return string
 390      */
 391     private function fm_js_template_fileselectlayout() {
 392         global $OUTPUT;
 393         $strloading  = get_string('loading', 'repository');
 394         $iconprogress = $this->pix_icon('i/loading_small', $strloading).'';
 395         $rv = '
 396 <div class="filemanager fp-select">
 397     <div class="fp-select-loading">
 398         <img src="'.$this->pix_url('i/loading_small').'" />
 399     </div>
 400     <form class="form-horizontal">
 401         <button class="fp-file-download">'.get_string('download').'</button>
 402         <button class="fp-file-delete">'.get_string('delete').'</button>
 403         <button class="fp-file-setmain">'.get_string('setmainfile', 'repository').'</button>
 404         <span class="fp-file-setmain-help">'.$OUTPUT->help_icon('setmainfile', 'repository').'</span>
 405         <button class="fp-file-zip">'.get_string('zip', 'editor').'</button>
 406         <button class="fp-file-unzip">'.get_string('unzip').'</button>
 407         <div class="fp-hr"></div>
 408
 409         <div class="fp-forminset">
 410                 <div class="fp-saveas control-group clearfix">
 411                     <label class="control-label">'.get_string('name', 'repository').'</label>
 412                     <div class="controls">
 413                         <input type="text"/>
 414                     </div>
 415                 </div>
 416                 <div class="fp-author control-group clearfix">
 417                     <label class="control-label">'.get_string('author', 'repository').'</label>
 418                     <div class="controls">
 419                         <input type="text"/>
 420                     </div>
 421                 </div>
 422                 <div class="fp-license control-group clearfix">
 423                     <label class="control-label">'.get_string('chooselicense', 'repository').'</label>
 424                     <div class="controls">
 425                         <select></select>
 426                     </div>
 427                 </div>
 428                 <div class="fp-path control-group clearfix">
 429                     <label class="control-label">'.get_string('path', 'repository').'</label>
 430                     <div class="controls">
 431                         <select></select>
 432                     </div>
 433                 </div>
 434                 <div class="fp-original control-group clearfix">
 435                     <label class="control-label">'.get_string('original', 'repository').'</label>
 436                     <div class="controls">
 437                         <span class="fp-originloading">'.$iconprogress.' '.$strloading.'</span><span class="fp-value"></span>
 438                     </div>
 439                 </div>
 440                 <div class="fp-reflist control-group clearfix">
 441                     <label class="control-label">'.get_string('referenceslist', 'repository').'</label>
 442                     <div class="controls">
 443                         <p class="fp-refcount"></p>
 444                         <span class="fp-reflistloading">'.$iconprogress.' '.$strloading.'</span>
 445                         <ul class="fp-value"></ul>
 446                     </div>
 447                 </div>
 448         </div>
 449         <div class="fp-select-buttons">
 450             <button class="fp-file-update btn-primary btn">'.get_string('update', 'moodle').'</button>
 451             <button class="fp-file-cancel btn-cancel btn">'.get_string('cancel').'</button>
 452         </div>
 453     </form>
 454     <div class="fp-info clearfix">
 455         <div class="fp-hr"></div>
 456         <p class="fp-thumbnail"></p>
 457         <div class="fp-fileinfo">
 458             <div class="fp-datemodified">'.get_string('lastmodified', 'repository').' <span class="fp-value"></span></div>
 459             <div class="fp-datecreated">'.get_string('datecreated', 'repository').' <span class="fp-value"></span></div>
 460             <div class="fp-size">'.get_string('size', 'repository').' <span class="fp-value"></span></div>
 461             <div class="fp-dimensions">'.get_string('dimensions', 'repository').' <span class="fp-value"></span></div>
 462         </div>
 463     </div>
 464 </div>';
 465         return $rv;
 466     }
 467
 468     /**
 469      * FileManager JS template for popup confirm dialogue window.
 470      *
 471      * Must have one top element, CSS for this element must define width and height of the window;
 472      *
 473      * content of element with class 'fp-dlg-text' will be replaced with dialog text;
 474      * elements with classes 'fp-dlg-butconfirm' and 'fp-dlg-butcancel' will
 475      * hold onclick events;
 476      *
 477      * @return string
 478      */
 479     private function fm_js_template_confirmdialog() {
 480         $rv = '
 481 <div class="filemanager fp-dlg">
 482     <div class="fp-dlg-text"></div>
 483     <button class="fp-dlg-butconfirm btn-primary btn">'.get_string('ok').'</button>
 484     <button class="fp-dlg-butcancel btn-cancel btn">'.get_string('cancel').'</button>
 485 </div>';
 486         return $rv;
 487     }
 488
 489     /**
 490      * Returns all FileManager JavaScript templates as an array.
 491      *
 492      * @return array
 493      */
 494     public function filemanager_js_templates() {
 495         $class_methods = get_class_methods($this);
 496         $templates = array();
 497         foreach ($class_methods as $method_name) {
 498             if (preg_match('/^fm_js_template_(.*)$/', $method_name, $matches))
 499             $templates[$matches[1]] = $this->$method_name();
 500         }
 501         return $templates;
 502     }
 503
 504     /**
 505      * Displays restrictions for the file manager
 506      *
 507      * @param form_filemanager $fm
 508      * @return string
 509      */
 510     private function fm_print_restrictions($fm) {
 511         $maxbytes = display_size($fm->options->maxbytes);
 512         $strparam = (object) array('size' => $maxbytes, 'attachments' => $fm->options->maxfiles,
 513             'areasize' => display_size($fm->options->areamaxbytes));
 514         $hasmaxfiles = !empty($fm->options->maxfiles) && $fm->options->maxfiles > 0;
 515         $hasarealimit = !empty($fm->options->areamaxbytes) && $fm->options->areamaxbytes != -1;
 516         if ($hasmaxfiles && $hasarealimit) {
 517             $maxsize = get_string('maxsizeandattachmentsandareasize', 'moodle', $strparam);
 518         } else if ($hasmaxfiles) {
 519             $maxsize = get_string('maxsizeandattachments', 'moodle', $strparam);
 520         } else if ($hasarealimit) {
 521             $maxsize = get_string('maxsizeandareasize', 'moodle', $strparam);
 522         } else {
 523             $maxsize = get_string('maxfilesize', 'moodle', $maxbytes);
 524         }
 525         // TODO MDL-32020 also should say about 'File types accepted'
 526         return '<span>'. $maxsize . '</span>';
 527     }
 528
 529     /**
 530      * Template for FilePicker with general layout (not QuickUpload).
 531      *
 532      * Must have one top element containing everything else (recommended <div class="file-picker">),
 533      * CSS for this element must define width and height of the filepicker window. Or CSS must
 534      * define min-width, max-width, min-height and max-height and in this case the filepicker
 535      * window will be resizeable;
 536      *
 537      * Element with class 'fp-viewbar' will have the class 'enabled' or 'disabled' when view mode
 538      * can be changed or not;
 539      * Inside element with class 'fp-viewbar' there are expected elements with classes
 540      * 'fp-vb-icons', 'fp-vb-tree' and 'fp-vb-details'. They will handle onclick events to switch
 541      * between the view modes, the last clicked element will have the class 'checked';
 542      *
 543      * Element with class 'fp-repo' is a template for displaying one repository. Other repositories
 544      * will be attached as siblings (classes first/last/even/odd will be added respectfully).
 545      * The currently selected repostory will have class 'active'. Contents of element with class
 546      * 'fp-repo-name' will be replaced with repository name, source of image with class
 547      * 'fp-repo-icon' will be replaced with repository icon;
 548      *
 549      * Element with class 'fp-content' is obligatory and will hold the current contents;
 550      *
 551      * Element with class 'fp-paging' will contain page navigation (will be deprecated soon);
 552      *
 553      * Element with class 'fp-path-folder' is a template for one folder in path toolbar.
 554      * It will hold mouse click event and will be assigned classes first/last/even/odd respectfully.
 555      * Parent element will receive class 'empty' when there are no folders to be displayed;
 556      * The content of subelement with class 'fp-path-folder-name' will be substituted with folder name;
 557      *
 558      * Element with class 'fp-toolbar' will have class 'empty' if all 'Back', 'Search', 'Refresh',
 559      * 'Logout', 'Manage' and 'Help' are unavailable for this repo;
 560      *
 561      * Inside fp-toolbar there are expected elements with classes fp-tb-back, fp-tb-search,
 562      * fp-tb-refresh, fp-tb-logout, fp-tb-manage and fp-tb-help. Each of them will have
 563      * class 'enabled' or 'disabled' if particular repository has this functionality.
 564      * Element with class 'fp-tb-search' must contain empty form inside, it's contents will
 565      * be substituted with the search form returned by repository (in the most cases it
 566      * is generated with template core_repository_renderer::repository_default_searchform);
 567      * Other elements must have either <a> or <button> element inside, it will hold onclick
 568      * event for corresponding action; labels for fp-tb-back and fp-tb-logout may be
 569      * replaced with those specified by repository;
 570      *
 571      * @return string
 572      */
 573     private function fp_js_template_generallayout() {
 574         $rv = '
 575 <div tabindex="0" class="file-picker fp-generallayout" role="dialog" aria-live="assertive">
 576     <div class="fp-repo-area">
 577         <ul class="fp-list">
 578             <li class="fp-repo">
 579                 <a href="#"><img class="fp-repo-icon" alt=" " width="16" height="16" />&nbsp;<span class="fp-repo-name"></span></a>
 580             </li>
 581         </ul>
 582     </div>
 583     <div class="fp-repo-items" tabindex="0">
 584         <div class="fp-navbar">
 585             <div>
 586                 <div class="fp-toolbar">
 587                     <div class="fp-tb-back">
 588                         <a href="#">'.get_string('back', 'repository').'</a>
 589                     </div>
 590                     <div class="fp-tb-search">
 591                         <form></form>
 592                     </div>
 593                     <div class="fp-tb-refresh">
 594                         <a title="'. get_string('refresh', 'repository') .'" href="#">
 595                             <img alt=""  src="'.$this->pix_url('a/refresh').'" />
 596                         </a>
 597                     </div>
 598                     <div class="fp-tb-logout">
 599                         <a title="'. get_string('logout', 'repository') .'" href="#">
 600                             <img alt="" src="'.$this->pix_url('a/logout').'" />
 601                         </a>
 602                     </div>
 603                     <div class="fp-tb-manage">
 604                         <a title="'. get_string('settings', 'repository') .'" href="#">
 605                             <img alt="" src="'.$this->pix_url('a/setting').'" />
 606                         </a>
 607                     </div>
 608                     <div class="fp-tb-help">
 609                         <a title="'. get_string('help', 'repository') .'" href="#">
 610                             <img alt="" src="'.$this->pix_url('a/help').'" />
 611                         </a>
 612                     </div>
 613                     <div class="fp-tb-message"></div>
 614                 </div>
 615                 <div class="fp-viewbar">
 616                     <a role="button" title="'. get_string('displayicons', 'repository') .'" class="fp-vb-icons" href="#">
 617                         <img alt="" src="'. $this->pix_url('fp/view_icon_active', 'theme') .'" />
 618                     </a>
 619                     <a role="button" title="'. get_string('displaydetails', 'repository') .'" class="fp-vb-details" href="#">
 620                         <img alt="" src="'. $this->pix_url('fp/view_list_active', 'theme') .'" />
 621                     </a>
 622                     <a role="button" title="'. get_string('displaytree', 'repository') .'" class="fp-vb-tree" href="#">
 623                         <img alt="" src="'. $this->pix_url('fp/view_tree_active', 'theme') .'" />
 624                     </a>
 625                 </div>
 626                 <div class="fp-clear-left"></div>
 627             </div>
 628             <div class="fp-pathbar">
 629                  <span class="fp-path-folder"><a class="fp-path-folder-name" href="#"></a></span>
 630             </div>
 631         </div>
 632         <div class="fp-content"></div>
 633     </div>
 634 </div>';
 635         return $rv;
 636     }
 637
 638     /**
 639      * FilePicker JS template for displaying one file in 'icon view' mode.
 640      *
 641      * the element with class 'fp-thumbnail' will be resized to the repository thumbnail size
 642      * (both width and height, unless min-width and/or min-height is set in CSS) and the content of
 643      * an element will be replaced with an appropriate img;
 644      *
 645      * the width of element with class 'fp-filename' will be set to the repository thumbnail width
 646      * (unless min-width is set in css) and the content of an element will be replaced with filename
 647      * supplied by repository;
 648      *
 649      * top element(s) will have class fp-folder if the element is a folder;
 650      *
 651      * List of files will have parent <div> element with class 'fp-iconview'
 652      *
 653      * @return string
 654      */
 655     private function fp_js_template_iconfilename() {
 656         $rv = '
 657 <a class="fp-file" href="#" >
 658     <div style="position:relative;">
 659         <div class="fp-thumbnail"></div>
 660         <div class="fp-reficons1"></div>
 661         <div class="fp-reficons2"></div>
 662     </div>
 663     <div class="fp-filename-field">
 664         <p class="fp-filename"></p>
 665     </div>
 666 </a>';
 667         return $rv;
 668     }
 669
 670     /**
 671      * FilePicker JS template for displaying file name in 'table view' and 'tree view' modes.
 672      *
 673      * content of the element with class 'fp-icon' will be replaced with an appropriate img;
 674      *
 675      * content of element with class 'fp-filename' will be replaced with filename supplied by
 676      * repository;
 677      *
 678      * top element(s) will have class fp-folder if the element is a folder;
 679      *
 680      * Note that tree view and table view are the YUI widgets and therefore there are no
 681      * other templates. The widgets will be wrapped in <div> with class fp-treeview or
 682      * fp-tableview (respectfully).
 683      *
 684      * @return string
 685      */
 686     private function fp_js_template_listfilename() {
 687         $rv = '
 688 <span class="fp-filename-icon">
 689     <a href="#">
 690         <span class="fp-icon"></span>
 691         <span class="fp-filename"></span>
 692     </a>
 693 </span>';
 694         return $rv;
 695     }
 696
 697     /**
 698      * FilePicker JS template for displaying link/loading progress for fetching of the next page
 699      *
 700      * This text is added to .fp-content AFTER .fp-iconview/.fp-treeview/.fp-tableview
 701      *
 702      * Must have one parent element with class 'fp-nextpage'. It will be assigned additional
 703      * class 'loading' during loading of the next page (it is recommended that in this case the link
 704      * becomes unavailable). Also must contain one element <a> or <button> that will hold
 705      * onclick event for displaying of the next page. The event will be triggered automatically
 706      * when user scrolls to this link.
 707      *
 708      * @return string
 709      */
 710     private function fp_js_template_nextpage() {
 711         $rv = '
 712 <div class="fp-nextpage">
 713     <div class="fp-nextpage-link"><a href="#">'.get_string('more').'</a></div>
 714     <div class="fp-nextpage-loading">
 715         <img src="'.$this->pix_url('i/loading_small').'" />
 716     </div>
 717 </div>';
 718         return $rv;
 719     }
 720
 721     /**
 722      * FilePicker JS template for window appearing to select a file.
 723      *
 724      * All content must be enclosed in one element, CSS for this class must define width and
 725      * height of the window;
 726      *
 727      * Thumbnail image will be added as content to the element with class 'fp-thumbnail';
 728      *
 729      * Inside the window the elements with the following classnames must be present:
 730      * 'fp-saveas', 'fp-linktype-2', 'fp-linktype-1', 'fp-linktype-4', 'fp-setauthor',
 731      * 'fp-setlicense'. Inside each of them must have one input element (or select in case of
 732      * fp-setlicense). They may also have labels.
 733      * The elements will be assign with class 'uneditable' and input/select element will become
 734      * disabled if they are not applicable for the particular file;
 735      *
 736      * There may be present elements with classes 'fp-datemodified', 'fp-datecreated', 'fp-size',
 737      * 'fp-license', 'fp-author', 'fp-dimensions'. They will receive additional class 'fp-unknown'
 738      * if information is unavailable. If there is information available, the content of embedded
 739      * element with class 'fp-value' will be substituted with the value;
 740      *
 741      * Elements with classes 'fp-select-confirm' and 'fp-select-cancel' will hold corresponding
 742      * onclick events;
 743      *
 744      * When confirm button is pressed and file is being selected, the top element receives
 745      * additional class 'loading'. It is removed when response from server is received.
 746      *
 747      * @return string
 748      */
 749     private function fp_js_template_selectlayout() {
 750         $rv = '
 751 <div class="file-picker fp-select">
 752     <div class="fp-select-loading">
 753         <img src="'.$this->pix_url('i/loading_small').'" />
 754     </div>
 755     <form class="form-horizontal">
 756         <div class="fp-forminset">
 757                 <div class="fp-linktype-2 control-group control-radio clearfix">
 758                     <label class="control-label control-radio">'.get_string('makefileinternal', 'repository').'</label>
 759                     <div class="controls control-radio">
 760                         <input type="radio"/>
 761                     </div>
 762                 </div>
 763                 <div class="fp-linktype-1 control-group control-radio clearfix">
 764                     <label class="control-label control-radio">'.get_string('makefilelink', 'repository').'</label>
 765                     <div class="controls control-radio">
 766                         <input type="radio"/>
 767                     </div>
 768                 </div>
 769                 <div class="fp-linktype-4 control-group control-radio clearfix">
 770                     <label class="control-label control-radio">'.get_string('makefilereference', 'repository').'</label>
 771                     <div class="controls control-radio">
 772                         <input type="radio"/>
 773                     </div>
 774                 </div>
 775                 <div class="fp-saveas control-group clearfix">
 776                     <label class="control-label">'.get_string('saveas', 'repository').'</label>
 777                     <div class="controls">
 778                         <input type="text"/>
 779                     </div>
 780                 </div>
 781                 <div class="fp-setauthor control-group clearfix">
 782                     <label class="control-label">'.get_string('author', 'repository').'</label>
 783                     <div class="controls">
 784                         <input type="text"/>
 785                     </div>
 786                 </div>
 787                 <div class="fp-setlicense control-group clearfix">
 788                     <label class="control-label">'.get_string('chooselicense', 'repository').'</label>
 789                     <div class="controls">
 790                         <select></select>
 791                     </div>
 792                 </div>
 793         </div>
 794        <div class="fp-select-buttons">
 795             <button class="fp-select-confirm btn-primary btn">'.get_string('getfile', 'repository').'</button>
 796             <button class="fp-select-cancel btn-cancel btn">'.get_string('cancel').'</button>
 797         </div>
 798     </form>
 799     <div class="fp-info clearfix">
 800         <div class="fp-hr"></div>
 801         <p class="fp-thumbnail"></p>
 802         <div class="fp-fileinfo">
 803             <div class="fp-datemodified">'.get_string('lastmodified', 'repository').'<span class="fp-value"></span></div>
 804             <div class="fp-datecreated">'.get_string('datecreated', 'repository').'<span class="fp-value"></span></div>
 805             <div class="fp-size">'.get_string('size', 'repository').'<span class="fp-value"></span></div>
 806             <div class="fp-license">'.get_string('license', 'repository').'<span class="fp-value"></span></div>
 807             <div class="fp-author">'.get_string('author', 'repository').'<span class="fp-value"></span></div>
 808             <div class="fp-dimensions">'.get_string('dimensions', 'repository').'<span class="fp-value"></span></div>
 809         </div>
 810     </div>
 811 </div>';
 812         return $rv;
 813     }
 814
 815     /**
 816      * FilePicker JS template for 'Upload file' repository
 817      *
 818      * Content to display when user chooses 'Upload file' repository (will be nested inside
 819      * element with class 'fp-content').
 820      *
 821      * Must contain form (enctype="multipart/form-data" method="POST")
 822      *
 823      * The elements with the following classnames must be present:
 824      * 'fp-file', 'fp-saveas', 'fp-setauthor', 'fp-setlicense'. Inside each of them must have
 825      * one input element (or select in case of fp-setlicense). They may also have labels.
 826      *
 827      * Element with class 'fp-upload-btn' will hold onclick event for uploading the file;
 828      *
 829      * Please note that some fields may be hidden using CSS if this is part of quickupload form
 830      *
 831      * @return string
 832      */
 833     private function fp_js_template_uploadform() {
 834         $rv = '
 835 <div class="fp-upload-form">
 836     <div class="fp-content-center">
 837         <form enctype="multipart/form-data" method="POST" class="form-horizontal">
 838             <div class="fp-formset">
 839                 <div class="fp-file control-group clearfix">
 840                     <label class="control-label">'.get_string('attachment', 'repository').'</label>
 841                     <div class="controls">
 842                         <input type="file"/>
 843                     </div>
 844                 </div>
 845                 <div class="fp-saveas control-group clearfix">
 846                     <label class="control-label">'.get_string('saveas', 'repository').'</label>
 847                     <div class="controls">
 848                         <input type="text"/>
 849                     </div>
 850                 </div>
 851                 <div class="fp-setauthor control-group clearfix">
 852                     <label class="control-label">'.get_string('author', 'repository').'</label>
 853                     <div class="controls">
 854                         <input type="text"/>
 855                     </div>
 856                 </div>
 857                 <div class="fp-setlicense control-group clearfix">
 858                     <label class="control-label">'.get_string('chooselicense', 'repository').'</label>
 859                     <div class="controls">
 860                         <select ></select>
 861                     </div>
 862                 </div>
 863             </div>
 864         </form>
 865         <div class="mdl-align">
 866             <button class="fp-upload-btn btn-primary btn">'.get_string('upload', 'repository').'</button>
 867         </div>
 868     </div>
 869 </div> ';
 870         return $rv;
 871     }
 872
 873     /**
 874      * FilePicker JS template to display during loading process (inside element with class 'fp-content').
 875      *
 876      * @return string
 877      */
 878     private function fp_js_template_loading() {
 879         return '
 880 <div class="fp-content-loading">
 881     <div class="fp-content-center">
 882         <img src="'.$this->pix_url('i/loading_small').'" />
 883     </div>
 884 </div>';
 885     }
 886
 887     /**
 888      * FilePicker JS template for error (inside element with class 'fp-content').
 889      *
 890      * must have element with class 'fp-error', its content will be replaced with error text
 891      * and the error code will be assigned as additional class to this element
 892      * used errors: invalidjson, nofilesavailable, norepositoriesavailable
 893      *
 894      * @return string
 895      */
 896     private function fp_js_template_error() {
 897         $rv = '
 898 <div class="fp-content-error" ><div class="fp-error"></div></div>';
 899         return $rv;
 900     }
 901
 902     /**
 903      * FilePicker JS template for error/info message displayed as a separate popup window.
 904      *
 905      * Must be wrapped in one element, CSS for this element must define
 906      * width and height of the window. It will be assigned with an additional class 'fp-msg-error'
 907      * or 'fp-msg-info' depending on message type;
 908      *
 909      * content of element with class 'fp-msg-text' will be replaced with error/info text;
 910      *
 911      * element with class 'fp-msg-butok' will hold onclick event
 912      *
 913      * @return string
 914      */
 915     private function fp_js_template_message() {
 916         $rv = '
 917 <div class="file-picker fp-msg" role="alertdialog" aria-live="assertive" aria-labelledby="fp-msg-labelledby">
 918     <p class="fp-msg-text" id="fp-msg-labelledby"></p>
 919     <button class="fp-msg-butok btn-primary btn">'.get_string('ok').'</button>
 920 </div>';
 921         return $rv;
 922     }
 923
 924     /**
 925      * FilePicker JS template for popup dialogue window asking for action when file with the same name already exists.
 926      *
 927      * Must have one top element, CSS for this element must define width and height of the window;
 928      *
 929      * content of element with class 'fp-dlg-text' will be replaced with dialog text;
 930      * elements with classes 'fp-dlg-butoverwrite', 'fp-dlg-butrename',
 931      * 'fp-dlg-butoverwriteall', 'fp-dlg-butrenameall' and 'fp-dlg-butcancel' will
 932      * hold onclick events;
 933      *
 934      * content of element with class 'fp-dlg-butrename' will be substituted with appropriate string
 935      * (Note that it may have long text)
 936      *
 937      * @return string
 938      */
 939     private function fp_js_template_processexistingfile() {
 940         $rv = '
 941 <div class="file-picker fp-dlg">
 942     <p class="fp-dlg-text"></p>
 943     <div class="fp-dlg-buttons">
 944         <button class="fp-dlg-butoverwrite btn">'.get_string('overwrite', 'repository').'</button>
 945         <button class="fp-dlg-butrename btn"></button>
 946         <button class="fp-dlg-butcancel btn btn-cancel">'.get_string('cancel').'</button>
 947     </div>
 948 </div>';
 949         return $rv;
 950     }
 951
 952     /**
 953      * FilePicker JS template for popup dialogue window asking for action when file with the same name already exists (multiple-file version).
 954      *
 955      * Must have one top element, CSS for this element must define width and height of the window;
 956      *
 957      * content of element with class 'fp-dlg-text' will be replaced with dialog text;
 958      * elements with classes 'fp-dlg-butoverwrite', 'fp-dlg-butrename' and 'fp-dlg-butcancel' will
 959      * hold onclick events;
 960      *
 961      * content of element with class 'fp-dlg-butrename' will be substituted with appropriate string
 962      * (Note that it may have long text)
 963      *
 964      * @return string
 965      */
 966     private function fp_js_template_processexistingfilemultiple() {
 967         $rv = '
 968 <div class="file-picker fp-dlg">
 969     <p class="fp-dlg-text"></p>
 970     <a class="fp-dlg-butoverwrite fp-panel-button" href="#">'.get_string('overwrite', 'repository').'</a>
 971     <a class="fp-dlg-butcancel fp-panel-button" href="#">'.get_string('cancel').'</a>
 972     <a class="fp-dlg-butrename fp-panel-button" href="#"></a>
 973     <br/>
 974     <a class="fp-dlg-butoverwriteall fp-panel-button" href="#">'.get_string('overwriteall', 'repository').'</a>
 975     <a class="fp-dlg-butrenameall fp-panel-button" href="#">'.get_string('renameall', 'repository').'</a>
 976 </div>';
 977         return $rv;
 978     }
 979
 980     /**
 981      * FilePicker JS template for repository login form including templates for each element type
 982      *
 983      * Must contain one <form> element with templates for different input types inside:
 984      * Elements with classes 'fp-login-popup', 'fp-login-textarea', 'fp-login-select' and
 985      * 'fp-login-input' are templates for displaying respective login form elements. Inside
 986      * there must be exactly one element with type <button>, <textarea>, <select> or <input>
 987      * (i.e. fp-login-popup should have <button>, fp-login-textarea should have <textarea>, etc.);
 988      * They may also contain the <label> element and it's content will be substituted with
 989      * label;
 990      *
 991      * You can also define elements with classes 'fp-login-checkbox', 'fp-login-text'
 992      * but if they are not found, 'fp-login-input' will be used;
 993      *
 994      * Element with class 'fp-login-radiogroup' will be used for group of radio inputs. Inside
 995      * it should hava a template for one radio input (with class 'fp-login-radio');
 996      *
 997      * Element with class 'fp-login-submit' will hold on click mouse event (form submission). It
 998      * will be removed if at least one popup element is present;
 999      *
1000      * @return string
1001      */
1002     private function fp_js_template_loginform() {
1003         $rv = '
1004 <div class="fp-login-form">
1005     <div class="fp-content-center">
1006         <form class="form-horizontal">
1007             <div class="fp-formset">
1008                 <div class="fp-login-popup control-group clearfix">
1009                     <div class="controls fp-popup">
1010                         <button class="fp-login-popup-but btn-primary btn">'.get_string('login', 'repository').'</button>
1011                     </div>
1012                 </div>
1013                 <div class="fp-login-textarea control-group clearfix">
1014                     <div class="controls"><textarea></textarea></div>
1015                 </div>
1016                 <div class="fp-login-select control-group clearfix">
1017                     <label class="control-label"></label>
1018
1019                     <div class="controls"><select></select></div>
1020                 </div>
1021                 <div class="fp-login-input control-group clearfix">
1022                     <label class="control-label"></label>
1023                     <div class="controls"><input/></div>
1024                 </div>
1025                 <div class="fp-login-radiogroup control-group clearfix">
1026                     <label class="control-label"></label>
1027                     <div class="controls fp-login-radio"><input /> <label></label></div>
1028                 </div>
1029             </div>
1030             <p><button class="fp-login-submit btn-primary btn">'.get_string('submit', 'repository').'</button></p>
1031         </form>
1032     </div>
1033 </div>';
1034         return $rv;
1035     }
1036
1037     /**
1038      * Returns all FilePicker JavaScript templates as an array.
1039      *
1040      * @return array
1041      */
1042     public function filepicker_js_templates() {
1043         $class_methods = get_class_methods($this);
1044         $templates = array();
1045         foreach ($class_methods as $method_name) {
1046             if (preg_match('/^fp_js_template_(.*)$/', $method_name, $matches))
1047             $templates[$matches[1]] = $this->$method_name();
1048         }
1049         return $templates;
1050     }
1051
1052     /**
1053      * Returns HTML for default repository searchform to be passed to Filepicker
1054      *
1055      * This will be used as contents for search form defined in generallayout template
1056      * (form with id {TOOLSEARCHID}).
1057      * Default contents is one text input field with name="s"
1058      */
1059     public function repository_default_searchform() {
1060         $searchinput = html_writer::label(get_string('searchrepo', 'repository'),
1061             'reposearch', false, array('class' => 'accesshide'));
1062         $searchinput .= html_writer::empty_tag('input', array('type' => 'text',
1063             'id' => 'reposearch', 'name' => 's', 'value' => get_string('search', 'repository')));
1064         $str = html_writer::tag('div', $searchinput, array('class' => "fp-def-search"));
1065
1066         return $str;
1067     }
1068 }
1069
1070 /**
1071  * Data structure representing a general moodle file tree viewer
1072  *
1073  * @copyright 2010 Dongsheng Cai
1074  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
1075  * @since     Moodle 2.0
1076  */
1077 class files_tree_viewer implements renderable {
1078     public $tree;
1079     public $path;
1080     public $context;
1081
1082     /**
1083      * Constructor of moodle_file_tree_viewer class
1084      * @param file_info $file_info
1085      * @param array $options
1086      */
1087     public function __construct(file_info $file_info, array $options = null) {
1088         global $CFG;
1089
1090         //note: this MUST NOT use get_file_storage() !!!!!!!!!!!!!!!!!!!!!!!!!!!!
1091         $this->options = (array)$options;
1092         $this->context = $options['context'];
1093
1094         $this->tree = array();
1095         $children = $file_info->get_children();
1096         $current_file_params = $file_info->get_params();
1097         $parent_info = $file_info->get_parent();
1098         $level = $parent_info;
1099         $this->path = array();
1100         while ($level) {
1101             $params = $level->get_params();
1102             $context = context::instance_by_id($params['contextid']);
1103             // $this->context is current context
1104             if ($context->id != $this->context->id or empty($params['filearea'])) {
1105                 break;
1106             }
1107             // unset unused parameters
1108             unset($params['component']);
1109             unset($params['filearea']);
1110             unset($params['filename']);
1111             unset($params['itemid']);
1112             $url = new moodle_url('/files/index.php', $params);
1113             $this->path[] = html_writer::link($url, $level->get_visible_name());
1114             $level = $level->get_parent();
1115         }
1116         $this->path = array_reverse($this->path);
1117         if ($current_file_params['filepath'] != '/') {
1118             $this->path[] = $file_info->get_visible_name();
1119         }
1120
1121         foreach ($children as $child) {
1122             $filedate = $child->get_timemodified();
1123             $filesize = $child->get_filesize();
1124             $mimetype = $child->get_mimetype();
1125             $params = $child->get_params();
1126             unset($params['component']);
1127             unset($params['filearea']);
1128             unset($params['filename']);
1129             unset($params['itemid']);
1130             $fileitem = array(
1131                     'params'   => $params,
1132                     'filename' => $child->get_visible_name(),
1133                     'mimetype' => $child->get_mimetype(),
1134                     'filedate' => $filedate ? $filedate : '',
1135                     'filesize' => $filesize ? $filesize : ''
1136                     );
1137             $url = new moodle_url('/files/index.php', $params);
1138             if ($child->is_directory()) {
1139                 $fileitem['isdir'] = true;
1140                 $fileitem['url'] = $url->out(false);
1141             } else {
1142                 $fileitem['url'] = $child->get_url();
1143             }
1144             $this->tree[] = $fileitem;
1145         }
1146     }
1147 }