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   1  <?php
   2  
   3  // This file is part of Moodle - http://moodle.org/
   4  //
   5  // Moodle is free software: you can redistribute it and/or modify
   6  // it under the terms of the GNU General Public License as published by
   7  // the Free Software Foundation, either version 3 of the License, or
   8  // (at your option) any later version.
   9  //
  10  // Moodle is distributed in the hope that it will be useful,
  11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  // GNU General Public License for more details.
  14  //
  15  // You should have received a copy of the GNU General Public License
  16  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17  
  18  /**
  19   * Folder module renderer
  20   *
  21   * @package   mod_folder
  22   * @copyright 2009 Petr Skoda  {@link http://skodak.org}
  23   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   */
  25  defined('MOODLE_INTERNAL') || die();
  26  
  27  class mod_folder_renderer extends plugin_renderer_base {
  28  
  29      /**
  30       * Returns html to display the content of mod_folder
  31       * (Description, folder files and optionally Edit button)
  32       *
  33       * @param stdClass $folder record from 'folder' table (please note
  34       *     it may not contain fields 'revision' and 'timemodified')
  35       * @return string
  36       */
  37      public function display_folder(stdClass $folder) {
  38          $output = '';
  39          $folderinstances = get_fast_modinfo($folder->course)->get_instances_of('folder');
  40          if (!isset($folderinstances[$folder->id]) ||
  41                  !($cm = $folderinstances[$folder->id]) ||
  42                  !($context = context_module::instance($cm->id))) {
  43              // Some error in parameters.
  44              // Don't throw any errors in renderer, just return empty string.
  45              // Capability to view module must be checked before calling renderer.
  46              return $output;
  47          }
  48  
  49          if (trim($folder->intro)) {
  50              if ($folder->display != FOLDER_DISPLAY_INLINE) {
  51                  $output .= $this->output->box(format_module_intro('folder', $folder, $cm->id),
  52                          'generalbox', 'intro');
  53              } else if ($cm->showdescription) {
  54                  // for "display inline" do not filter, filters run at display time.
  55                  $output .= format_module_intro('folder', $folder, $cm->id, false);
  56              }
  57          }
  58  
  59          $foldertree = new folder_tree($folder, $cm);
  60          if ($folder->display == FOLDER_DISPLAY_INLINE) {
  61              // Display module name as the name of the root directory.
  62              $foldertree->dir['dirname'] = $cm->get_formatted_name();
  63          }
  64          $output .= $this->output->box($this->render($foldertree),
  65                  'generalbox foldertree');
  66  
  67          // Do not append the edit button on the course page.
  68          if ($folder->display != FOLDER_DISPLAY_INLINE && has_capability('mod/folder:managefiles', $context)) {
  69              $output .= $this->output->container(
  70                      $this->output->single_button(new moodle_url('/mod/folder/edit.php',
  71                      array('id' => $cm->id)), get_string('edit')),
  72                      'mdl-align folder-edit-button');
  73          }
  74          return $output;
  75      }
  76  
  77      public function render_folder_tree(folder_tree $tree) {
  78          static $treecounter = 0;
  79  
  80          $content = '';
  81          $id = 'folder_tree'. ($treecounter++);
  82          $content .= '<div id="'.$id.'" class="filemanager">';
  83          $content .= $this->htmllize_tree($tree, array('files' => array(), 'subdirs' => array($tree->dir)));
  84          $content .= '</div>';
  85          $showexpanded = true;
  86          if (empty($tree->folder->showexpanded)) {
  87              $showexpanded = false;
  88          }
  89          $this->page->requires->js_init_call('M.mod_folder.init_tree', array($id, $showexpanded));
  90          return $content;
  91      }
  92  
  93      /**
  94       * Internal function - creates htmls structure suitable for YUI tree.
  95       */
  96      protected function htmllize_tree($tree, $dir) {
  97          global $CFG;
  98  
  99          if (empty($dir['subdirs']) and empty($dir['files'])) {
 100              return '';
 101          }
 102          $result = '<ul>';
 103          foreach ($dir['subdirs'] as $subdir) {
 104              $image = $this->output->pix_icon(file_folder_icon(24), $subdir['dirname'], 'moodle');
 105              $filename = html_writer::tag('span', $image, array('class' => 'fp-icon')).
 106                      html_writer::tag('span', s($subdir['dirname']), array('class' => 'fp-filename'));
 107              $filename = html_writer::tag('div', $filename, array('class' => 'fp-filename-icon'));
 108              $result .= html_writer::tag('li', $filename. $this->htmllize_tree($tree, $subdir));
 109          }
 110          foreach ($dir['files'] as $file) {
 111              $filename = $file->get_filename();
 112              $url = moodle_url::make_pluginfile_url($file->get_contextid(), $file->get_component(),
 113                      $file->get_filearea(), $file->get_itemid(), $file->get_filepath(), $filename, false);
 114              if (file_extension_in_typegroup($filename, 'web_image')) {
 115                  $image = $url->out(false, array('preview' => 'tinyicon', 'oid' => $file->get_timemodified()));
 116                  $image = html_writer::empty_tag('img', array('src' => $image));
 117              } else {
 118                  $image = $this->output->pix_icon(file_file_icon($file, 24), $filename, 'moodle');
 119              }
 120              $filename = html_writer::tag('span', $image, array('class' => 'fp-icon')).
 121                      html_writer::tag('span', $filename, array('class' => 'fp-filename'));
 122              $filename = html_writer::tag('span',
 123                      html_writer::link($url->out(false, array('forcedownload' => 1)), $filename),
 124                      array('class' => 'fp-filename-icon'));
 125              $result .= html_writer::tag('li', $filename);
 126          }
 127          $result .= '</ul>';
 128  
 129          return $result;
 130      }
 131  }
 132  
 133  class folder_tree implements renderable {
 134      public $context;
 135      public $folder;
 136      public $cm;
 137      public $dir;
 138  
 139      public function __construct($folder, $cm) {
 140          $this->folder = $folder;
 141          $this->cm     = $cm;
 142  
 143          $this->context = context_module::instance($cm->id);
 144          $fs = get_file_storage();
 145          $this->dir = $fs->get_area_tree($this->context->id, 'mod_folder', 'content', 0);
 146      }
 147  }