e2pdf / vendors / svggraph / StructuredDataItem.php

StructuredDataItem.php in E2Pdf – Export Pdf Tool for WordPress 1.32.49, at vendors/svggraph/StructuredDataItem.php

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1	<?php
2	/**
3	* Copyright (C) 2019-2022 Graham Breach
4	*
5	* This program is free software: you can redistribute it and/or modify
6	* it under the terms of the GNU Lesser General Public License as published by
7	* the Free Software Foundation, either version 3 of the License, or
8	* (at your option) any later version.
9	*
10	* This program is distributed in the hope that it will be useful,
11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13	* GNU Lesser General Public License for more details.
14	*
15	* You should have received a copy of the GNU Lesser General Public License
16	* along with this program. If not, see <http://www.gnu.org/licenses/>.
17	*/
18	/**
19	* For more information, please contact <graham@goat1000.com>
20	*/
21
22	namespace Goat1000\SVGGraph;
23
24	/**
25	* Class for structured data items
26	*/
27	class StructuredDataItem extends DataItem {
28
29	private $item;
30	private $dataset = 0;
31	private $key_field = 0;
32	private $dataset_fields = [];
33	private $structure;
34	public $key = 0;
35	public $value = null;
36
37	public function __construct($item, &$structure, $dataset, $key = null)
38	{
39	$this->item = $item;
40	$this->key_field = $structure['key'];
41	$this->dataset_fields = $structure['value'];
42	$this->key = $this->key_field === null ? $key : $item[$this->key_field];
43	if(isset($this->dataset_fields[$dataset]) &&
44	isset($item[$this->dataset_fields[$dataset]]))
45	$this->value = $item[$this->dataset_fields[$dataset]];
46
47	$this->dataset = $dataset;
48	$this->structure = &$structure;
49	}
50
51	/**
52	* Constructs a new data item with a different dataset
53	*/
54	public function newFrom($dataset)
55	{
56	return new StructuredDataItem($this->item, $this->structure,
57	$dataset, $this->key);
58	}
59
60	/**
61	* Getter for data fields
62	*/
63	public function __get($field)
64	{
65	return $this->data($field);
66	}
67
68	/**
69	* Tests if a field is set
70	*/
71	public function __isset($field)
72	{
73	if(!isset($this->structure[$field]))
74	return false;
75	$item_field = $this->structure[$field];
76	if(is_array($item_field)) {
77	if(!isset($item_field[$this->dataset]))
78	return false;
79	$item_field = $item_field[$this->dataset];
80	}
81
82	return isset($this->item[$item_field]);
83	}
84
85	/**
86	* Returns some extra data from item
87	*/
88	public function data($field)
89	{
90	if(!isset($this->structure[$field]))
91	return null;
92	$item_field = $this->structure[$field];
93	if(is_array($item_field)) {
94	if(!isset($item_field[$this->dataset]))
95	return null;
96	$item_field = $item_field[$this->dataset];
97	}
98
99	return isset($this->item[$item_field]) ? $this->item[$item_field] : null;
100	}
101
102	/**
103	* Check if extra data field exists
104	*/
105	public function rawDataExists($field)
106	{
107	return isset($this->item[$field]);
108	}
109
110	/**
111	* Returns a value from the item without translating structure
112	*/
113	public function rawData($field)
114	{
115	return isset($this->item[$field]) ? $this->item[$field] : null;
116	}
117	}
118
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