css-javascript-toolbox / models / block / assignmentpanel / helpers / hierarchical.php

hierarchical.php in CSS & JavaScript Toolbox 8.0.2, at models/block/assignmentpanel/helpers/hierarchical.php

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1	<?php
2	/**
3	*
4	*/
5
6	/**
7	*
8	*/
9	class CJT_Models_Block_Assignmentpanel_Helpers_Hierarchical {
10
11	/**
12	* put your comment there...
13	*
14	* @var mixed
15	*/
16	protected $allItems = array();
17
18	/**
19	* put your comment there...
20	*
21	* @var mixed
22	*/
23	protected $iPerPage = null;
24
25	/**
26	* put your comment there...
27	*
28	* @var mixed
29	*/
30	protected $offset = null;
31
32	/**
33	* put your comment there...
34	*
35	* @param mixed $offset
36	* @param mixed $iPerPage
37	* @param mixed $items
38	* @return CJT_Models_Block_Assignmentpanel_Helpers_Hierarchical
39	*/
40	public function __construct($offset, $iPerPage, $allItems) {
41	// Initialize.
42	$this->offset = $offset;
43	$this->iPerPage = $iPerPage;
44	$this->allItems = $allItems;
45	}
46
47	/**
48	* put your comment there...
49	*
50	*/
51	public function getIPerPage() {
52	return $this->iPerPage;
53	}
54
55	/**
56	* put your comment there...
57	*
58	*/
59	public function getItems() {
60	// Initialize.
61	$allItems =& $this->allItems;
62	$hierarchicalItems = array();
63	$groupedItems = array();
64	$offset = $this->getOffset();
65	$endOffset = $this->getOffset() + $this->getIPerPage();
66	// Group all items under parent item(s) ID.
67	foreach ($allItems as $item) {
68	$groupedItems[((int) $item['parent'])][$item['id']] = $item;
69	}
70	/// Non-Recursive loop for getting
71	/// FLAT list for all items with childs items
72	/// underneath them
73	// Working pointers has the current in process
74	// items. Initialize to start with root
75	// items with parent = 0 (array(0)).
76	$workingPointers = array(0);
77	do {
78	// Current pointer is the last one.
79	$pointer = end($workingPointers);
80	// Get current working group.
81	$group =& $groupedItems[$pointer];
82	// Shift first item from group.
83	$item = array_shift($group);
84	// Add item to the list.
85	$hierarchicalItems[$item['id']] = $item;
86	// Remove current group from the pointers
87	// list if all items has been processed.
88	if (empty($group)) {
89	array_pop($workingPointers);
90	}
91	// If the current items has childs then
92	// add it to the working pointer to be processed
93	// in the immediate iteration.
94	if (isset($groupedItems[$item['id']])) {
95	$workingPointers[] = $item['id'];
96	}
97	// If there is no other group to process then exit.
98	} while(!empty($workingPointers) && (count($hierarchicalItems) != $endOffset));
99	// Get ony items start from the requested offset.
100	$items = array_slice($hierarchicalItems, $offset, $this->getIPerPage());
101	// Returns full-tree.
102	return $items;
103	}
104
105	/**
106	* put your comment there...
107	*
108	*/
109	public function getOffset() {
110	return $this->offset;
111	}
112
113	} // End class.
114