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201 lines
5.6 KiB
201 lines
5.6 KiB
<?php |
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/** |
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* PHPExcel_Worksheet_ColumnIterator |
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* |
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* Copyright (c) 2006 - 2015 PHPExcel |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with this library; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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* |
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* @category PHPExcel |
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* @package PHPExcel_Worksheet |
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* @copyright Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel) |
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* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL |
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* @version ##VERSION##, ##DATE## |
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*/ |
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class PHPExcel_Worksheet_ColumnIterator implements Iterator |
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{ |
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/** |
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* PHPExcel_Worksheet to iterate |
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* |
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* @var PHPExcel_Worksheet |
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*/ |
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private $subject; |
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/** |
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* Current iterator position |
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* |
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* @var int |
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*/ |
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private $position = 0; |
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/** |
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* Start position |
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* |
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* @var int |
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*/ |
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private $startColumn = 0; |
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/** |
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* End position |
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* |
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* @var int |
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*/ |
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private $endColumn = 0; |
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/** |
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* Create a new column iterator |
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* |
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* @param PHPExcel_Worksheet $subject The worksheet to iterate over |
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* @param string $startColumn The column address at which to start iterating |
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* @param string $endColumn Optionally, the column address at which to stop iterating |
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*/ |
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public function __construct(PHPExcel_Worksheet $subject = null, $startColumn = 'A', $endColumn = null) |
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{ |
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// Set subject |
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$this->subject = $subject; |
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$this->resetEnd($endColumn); |
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$this->resetStart($startColumn); |
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} |
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/** |
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* Destructor |
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*/ |
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public function __destruct() |
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{ |
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unset($this->subject); |
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} |
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/** |
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* (Re)Set the start column and the current column pointer |
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* |
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* @param integer $startColumn The column address at which to start iterating |
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* @return PHPExcel_Worksheet_ColumnIterator |
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* @throws PHPExcel_Exception |
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*/ |
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public function resetStart($startColumn = 'A') |
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{ |
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$startColumnIndex = PHPExcel_Cell::columnIndexFromString($startColumn) - 1; |
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if ($startColumnIndex > PHPExcel_Cell::columnIndexFromString($this->subject->getHighestColumn()) - 1) { |
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throw new PHPExcel_Exception("Start column ({$startColumn}) is beyond highest column ({$this->subject->getHighestColumn()})"); |
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} |
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$this->startColumn = $startColumnIndex; |
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if ($this->endColumn < $this->startColumn) { |
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$this->endColumn = $this->startColumn; |
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} |
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$this->seek($startColumn); |
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return $this; |
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} |
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/** |
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* (Re)Set the end column |
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* |
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* @param string $endColumn The column address at which to stop iterating |
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* @return PHPExcel_Worksheet_ColumnIterator |
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*/ |
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public function resetEnd($endColumn = null) |
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{ |
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$endColumn = ($endColumn) ? $endColumn : $this->subject->getHighestColumn(); |
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$this->endColumn = PHPExcel_Cell::columnIndexFromString($endColumn) - 1; |
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return $this; |
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} |
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/** |
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* Set the column pointer to the selected column |
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* |
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* @param string $column The column address to set the current pointer at |
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* @return PHPExcel_Worksheet_ColumnIterator |
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* @throws PHPExcel_Exception |
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*/ |
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public function seek($column = 'A') |
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{ |
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$column = PHPExcel_Cell::columnIndexFromString($column) - 1; |
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if (($column < $this->startColumn) || ($column > $this->endColumn)) { |
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throw new PHPExcel_Exception("Column $column is out of range ({$this->startColumn} - {$this->endColumn})"); |
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} |
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$this->position = $column; |
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return $this; |
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} |
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/** |
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* Rewind the iterator to the starting column |
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*/ |
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public function rewind() |
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{ |
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$this->position = $this->startColumn; |
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} |
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/** |
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* Return the current column in this worksheet |
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* |
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* @return PHPExcel_Worksheet_Column |
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*/ |
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public function current() |
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{ |
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return new PHPExcel_Worksheet_Column($this->subject, PHPExcel_Cell::stringFromColumnIndex($this->position)); |
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} |
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/** |
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* Return the current iterator key |
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* |
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* @return string |
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*/ |
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public function key() |
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{ |
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return PHPExcel_Cell::stringFromColumnIndex($this->position); |
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} |
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/** |
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* Set the iterator to its next value |
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*/ |
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public function next() |
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{ |
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++$this->position; |
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} |
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/** |
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* Set the iterator to its previous value |
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* |
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* @throws PHPExcel_Exception |
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*/ |
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public function prev() |
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{ |
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if ($this->position <= $this->startColumn) { |
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throw new PHPExcel_Exception( |
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"Column is already at the beginning of range (" . |
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PHPExcel_Cell::stringFromColumnIndex($this->endColumn) . " - " . |
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PHPExcel_Cell::stringFromColumnIndex($this->endColumn) . ")" |
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); |
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} |
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--$this->position; |
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} |
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/** |
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* Indicate if more columns exist in the worksheet range of columns that we're iterating |
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* |
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* @return boolean |
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*/ |
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public function valid() |
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{ |
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return $this->position <= $this->endColumn; |
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} |
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}
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