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codepress-admin-columns / classes / ListScreenCollection.php

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ListScreenCollection.php

72 lines

1	<?php
2
3	namespace AC;
4
5	use Countable;
6	use Iterator;
7
8	final class ListScreenCollection implements Iterator, Countable {
9
10	/**
11	* @var ListScreen[]
12	*/
13	private $data = [];
14
15	public function __construct( array $list_screens = [] ) {
16	array_map( [ $this, 'add' ], $list_screens );
17	}
18
19	public function add( ListScreen $list_screen ) {
20	$this->data[ $list_screen->get_layout_id() ] = $list_screen;
21	}
22
23	public function remove( ListScreen $list_screen ) {
24	unset( $this->data[ $list_screen->get_layout_id() ] );
25	}
26
27	public function rewind() {
28	reset( $this->data );
29	}
30
31	/**
32	* @return ListScreen
33	*/
34	public function current() {
35	return current( $this->data );
36	}
37
38	public function get_first() {
39	return reset( $this->data );
40	}
41
42	public function key() {
43	return key( $this->data );
44	}
45
46	public function next() {
47	return next( $this->data );
48	}
49
50	public function valid() {
51	$key = $this->key();
52
53	return ( $key !== null && $key !== false );
54	}
55
56	/**
57	* @return int
58	*/
59	public function count() {
60	return count( $this->data );
61	}
62
63	/**
64	* @param ListScreen $list_screen
65	*
66	* @return bool
67	*/
68	public function contains( ListScreen $list_screen ) {
69	return isset( $this->data[ $list_screen->get_layout_id() ] );
70	}
71
72	}