C:/xampp/htdocs/moodle/blocks/private_files/renderer.php

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<?php

// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.


defined('MOODLE_INTERNAL') || die();

class block_private_files_renderer extends plugin_renderer_base {

    public function private_files_tree() {
        return $this->render(new private_files_tree);
    }

    public function render_private_files_tree(private_files_tree $tree) {
        $module = array('name'=>'block_private_files', 'fullpath'=>'/blocks/private_files/module.js', 'requires'=>array('yui2-treeview'));
        if (empty($tree->dir['subdirs']) && empty($tree->dir['files'])) {
            $html = $this->output->box(get_string('nofilesavailable', 'repository'));
        } else {
            $htmlid = 'private_files_tree_'.uniqid();
            $this->page->requires->js_init_call('M.block_private_files.init_tree', array(false, $htmlid));
            $html = '<div id="'.$htmlid.'">';
            $html .= $this->htmllize_tree($tree, $tree->dir);
            $html .= '</div>';
        }

        return $html;
    }

    protected function htmllize_tree($tree, $dir) {
        global $CFG;
        $yuiconfig = array();
        $yuiconfig['type'] = 'html';

        if (empty($dir['subdirs']) and empty($dir['files'])) {
            return '';
        }
        $result = '<ul>';
        foreach ($dir['subdirs'] as $subdir) {
            $image = $this->output->pix_icon("f/folder", $subdir['dirname'], 'moodle', array('class'=>'icon'));
            $result .= '<li yuiConfig=\''.json_encode($yuiconfig).'\'><div>'.$image.' '.s($subdir['dirname']).'</div> '.$this->htmllize_tree($tree, $subdir).'</li>';
        }
        foreach ($dir['files'] as $file) {
            $url = file_encode_url("$CFG->wwwroot/pluginfile.php", '/'.$tree->context->id.'/user/private'.$file->get_filepath().$file->get_filename(), true);
            $filename = $file->get_filename();
            $icon = mimeinfo("icon", $filename);
            $image = $this->output->pix_icon("f/$icon", $filename, 'moodle', array('class'=>'icon'));
            $result .= '<li yuiConfig=\''.json_encode($yuiconfig).'\'><div>'.html_writer::link($url, $image.'&nbsp;'.$filename).'</div></li>';
        }
        $result .= '</ul>';

        return $result;
    }
}

class private_files_tree implements renderable {
    public $context;
    public $dir;
    public function __construct() {
        global $USER;
        $this->context = get_context_instance(CONTEXT_USER, $USER->id);
        $fs = get_file_storage();
        $this->dir = $fs->get_area_tree($this->context->id, 'user', 'private', 0);
    }
}