xref: /dokuwiki/inc/Menu/AbstractMenu.php (revision b85a7f3bd0cd2f5f52b55bd3de0c7869787662fb) 
1<?php
2
3namespace dokuwiki\Menu;
4
5use dokuwiki\Menu\Item\AbstractItem;
6
7abstract class AbstractMenu {
8
9    /** @var string[] list of Item classes to load */
10    protected $types = array();
11
12    /** @var int the context this menu is used in */
13    protected $context = AbstractItem::CTX_DESKTOP;
14
15    /** @var string view identifier to be set in the event */
16    protected $view = '';
17
18    /**
19     * AbstractMenu constructor.
20     *
21     * @param int $context the context this menu is used in
22     */
23    public function __construct($context = AbstractItem::CTX_DESKTOP) {
24        $this->context = $context;
25    }
26
27    /**
28     * Get the list of action items in this menu
29     *
30     * @return AbstractItem[]
31     * @triggers MENU_ITEMS_ASSEMBLY
32     */
33    public function getItems() {
34        $data = array(
35            'view' => $this->view,
36            'items' => array(),
37        );
38        trigger_event('MENU_ITEMS_ASSEMBLY', $data, array($this, 'loadItems'));
39        return $data['items'];
40    }
41
42    /**
43     * Default action for the MENU_ITEMS_ASSEMBLY event
44     *
45     * @see getItems()
46     * @param array $data The plugin data
47     */
48    public function loadItems(&$data) {
49        foreach($this->types as $class) {
50            try {
51                $class = "\\dokuwiki\\Menu\\Item\\$class";
52                /** @var AbstractItem $item */
53                $item = new $class();
54                if(!$item->visibleInContext($this->context)) continue;
55                $data['items'][$item->getType()] = $item;
56            } catch(\RuntimeException $ignored) {
57                // item not available
58            }
59        }
60    }
61
62    /**
63     * Generate HTML list items for this menu
64     *
65     * This is a convenience method for template authors. If you need more fine control over the
66     * output, use getItems() and build the HTML yourself
67     *
68     * @param string|false $classprefix create a class from type with this prefix, false for no class
69     * @return string
70     */
71    public function getListItems($classprefix = '') {
72        $html = '';
73        foreach($this->getItems() as $item) {
74            if($classprefix !== false) {
75                $class = ' class="' . $classprefix . $item->getType() . '"';
76            } else {
77                $class = '';
78            }
79
80            $html .= "<li$class>";
81            $html .= $item->asHtmlLink(false);
82            $html .= '</li>';
83        }
84        return $html;
85    }
86
87}
88