visualizer / vendor / phpoffice / phpexcel / Classes / PHPExcel / CachedObjectStorage / Memory.php

Memory.php in Visualizer – Tables & Charts Manager with Built-in AI Generator 3.0.3, at vendor/phpoffice/phpexcel/Classes/PHPExcel/CachedObjectStorage/Memory.php

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1	<?php
2	/**
3	* PHPExcel
4	*
5	* Copyright (c) 2006 - 2014 PHPExcel
6	*
7	* This library is free software; you can redistribute it and/or
8	* modify it under the terms of the GNU Lesser General Public
9	* License as published by the Free Software Foundation; either
10	* version 2.1 of the License, or (at your option) any later version.
11	*
12	* This library is distributed in the hope that it will be useful,
13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15	* Lesser General Public License for more details.
16	*
17	* You should have received a copy of the GNU Lesser General Public
18	* License along with this library; if not, write to the Free Software
19	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20	*
21	* @category PHPExcel
22	* @package PHPExcel_CachedObjectStorage
23	* @copyright Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
24	* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
25	* @version ##VERSION##, ##DATE##
26	*/
27
28
29	/**
30	* PHPExcel_CachedObjectStorage_Memory
31	*
32	* @category PHPExcel
33	* @package PHPExcel_CachedObjectStorage
34	* @copyright Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
35	*/
36	class PHPExcel_CachedObjectStorage_Memory extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
37
38	/**
39	* Dummy method callable from CacheBase, but unused by Memory cache
40	*
41	* @return void
42	*/
43	protected function _storeData() {
44	} // function _storeData()
45
46	/**
47	* Add or Update a cell in cache identified by coordinate address
48	*
49	* @param string $pCoord Coordinate address of the cell to update
50	* @param PHPExcel_Cell $cell Cell to update
51	* @return PHPExcel_Cell
52	* @throws PHPExcel_Exception
53	*/
54	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
55	$this->_cellCache[$pCoord] = $cell;
56
57	// Set current entry to the new/updated entry
58	$this->_currentObjectID = $pCoord;
59
60	return $cell;
61	} // function addCacheData()
62
63
64	/**
65	* Get cell at a specific coordinate
66	*
67	* @param string $pCoord Coordinate of the cell
68	* @throws PHPExcel_Exception
69	* @return PHPExcel_Cell Cell that was found, or null if not found
70	*/
71	public function getCacheData($pCoord) {
72	// Check if the entry that has been requested actually exists
73	if (!isset($this->_cellCache[$pCoord])) {
74	$this->_currentObjectID = NULL;
75	// Return null if requested entry doesn't exist in cache
76	return null;
77	}
78
79	// Set current entry to the requested entry
80	$this->_currentObjectID = $pCoord;
81
82	// Return requested entry
83	return $this->_cellCache[$pCoord];
84	} // function getCacheData()
85
86
87	/**
88	* Clone the cell collection
89	*
90	* @param PHPExcel_Worksheet $parent The new worksheet
91	* @return void
92	*/
93	public function copyCellCollection(PHPExcel_Worksheet $parent) {
94	parent::copyCellCollection($parent);
95
96	$newCollection = array();
97	foreach($this->_cellCache as $k => &$cell) {
98	$newCollection[$k] = clone $cell;
99	$newCollection[$k]->attach($this);
100	}
101
102	$this->_cellCache = $newCollection;
103	}
104
105
106	/**
107	* Clear the cell collection and disconnect from our parent
108	*
109	* @return void
110	*/
111	public function unsetWorksheetCells() {
112	// Because cells are all stored as intact objects in memory, we need to detach each one from the parent
113	foreach($this->_cellCache as $k => &$cell) {
114	$cell->detach();
115	$this->_cellCache[$k] = null;
116	}
117	unset($cell);
118
119	$this->_cellCache = array();
120
121	// detach ourself from the worksheet, so that it can then delete this object successfully
122	$this->_parent = null;
123	} // function unsetWorksheetCells()
124
125	}
126