C:/xampp/htdocs/moodle/blocks/private_files/block_private_files.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/>.


class block_private_files extends block_base {

    function init() {
        $this->title = get_string('myfiles');
    }

    function specialization() {
    }

    function applicable_formats() {
        return array('all' => true);
    }

    function instance_allow_multiple() {
        return false;
    }

    function get_content() {
        global $CFG, $USER, $PAGE, $OUTPUT;

        if ($this->content !== NULL) {
            return $this->content;
        }
        if (empty($this->instance)) {
            return null;
        }

        $this->content = new stdClass();
        $this->content->text = '';
        $this->content->footer = '';
        if (isloggedin() && !isguestuser()) {   // Show the block
            $this->content = new stdClass();

            //TODO: add capability check here!

            $renderer = $this->page->get_renderer('block_private_files');
            $this->content->text = $renderer->private_files_tree();
            if (has_capability('moodle/user:manageownfiles', $this->context)) {
                $this->content->text .= $OUTPUT->single_button(new moodle_url('/user/filesedit.php', array('returnurl'=>$PAGE->url->out())), get_string('myfilesmanage'), 'get');
            }
            $this->content->footer = '';

        }
        return $this->content;
    }
}