1<?php
2// This file is part of Moodle - http://moodle.org/
3//
4// Moodle is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8//
9// Moodle is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12// GNU General Public License for more details.
13//
14// You should have received a copy of the GNU General Public License
15// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
16
17/**
18 * A base class for actions that are an icon that lets you manipulate the question in some way.
19 *
20 * @package   core_question
21 * @copyright 2009 Tim Hunt
22 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
23 */
24
25namespace core_question\bank;
26defined('MOODLE_INTERNAL') || die();
27
28
29/**
30 * A base class for actions that are an icon that lets you manipulate the question in some way.
31 *
32 * @copyright 2009 Tim Hunt
33 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
34 */
35abstract class action_column_base extends column_base {
36
37    protected function get_title() {
38        return '&#160;';
39    }
40
41    public function get_extra_classes() {
42        return array('iconcol');
43    }
44
45    protected function print_icon($icon, $title, $url) {
46        global $OUTPUT;
47        echo '<a title="' . $title . '" href="' . $url . '">' . $OUTPUT->pix_icon($icon, $title) . '</a>';
48    }
49
50    public function get_extra_joins() {
51        return array('qc' => 'JOIN {question_categories} qc ON qc.id = q.category');
52    }
53
54    public function get_required_fields() {
55        // Createdby is required for permission checks.
56        // Qtype so we can easily avoid applying actions to question types that
57        // are no longer installed.
58        return ['q.id', 'q.qtype', 'q.createdby', 'qc.contextid'];
59    }
60}
61