Feature: Additional row iterator options: allow a start row to be defined in the constructor; seek(), and prev() methods added.

git-svn-id: https://phpexcel.svn.codeplex.com/svn/trunk@84512 2327b42d-5241-43d6-9e2a-de5ac946f064

Classes/PHPExcel/Worksheet/RowIterator.php

@@ -19,10 +19,10 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  *
  * @category   PHPExcel
- * @package    PHPExcel_Worksheet
+ * @package	PHPExcel_Worksheet
  * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    ##VERSION##, ##DATE##
+ * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version	##VERSION##, ##DATE##
  */
 
 
@@ -32,7 +32,7 @@
  * Used to iterate rows in a PHPExcel_Worksheet
  *
  * @category   PHPExcel
- * @package    PHPExcel_Worksheet
+ * @package	PHPExcel_Worksheet
  * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
  */
 class PHPExcel_Worksheet_RowIterator extends CachingIterator
@@ -51,14 +51,24 @@ class PHPExcel_Worksheet_RowIterator extends CachingIterator
 	 */
 	private $_position = 1;
 
+	/**
+	 * Start position
+	 *
+	 * @var int
+	 */
+	private $_startRow = 1;
+
+
 	/**
 	 * Create a new row iterator
 	 *
-	 * @param PHPExcel_Worksheet 		$subject
+	 * @param	PHPExcel_Worksheet	$subject	The worksheet to iterate over
+	 * @param	integer				$startRow	The row number at which to start iterating
 	 */
-	public function __construct(PHPExcel_Worksheet $subject = null) {
+	public function __construct(PHPExcel_Worksheet $subject = null, $startRow = 1) {
 		// Set subject
 		$this->_subject = $subject;
+		$this->resetStart($startRow);
 	}
 
 	/**
@@ -69,43 +79,70 @@ class PHPExcel_Worksheet_RowIterator extends CachingIterator
 	}
 
 	/**
-	 * Rewind iterator
+	 * (Re)Set the start row and the current row pointer
+	 *
+	 * @param integer	$startRow	The row number at which to start iterating
 	 */
-    public function rewind() {
-        $this->_position = 1;
-    }
+	public function resetStart($startRow = 1) {
+		$this->_startRow = $startRow;
+		$this->seek($startRow);
+	}
 
-    /**
-     * Current PHPExcel_Worksheet_Row
-     *
-     * @return PHPExcel_Worksheet_Row
-     */
-    public function current() {
-    	return new PHPExcel_Worksheet_Row($this->_subject, $this->_position);
-    }
+	/**
+	 * Set the row pointer to the selected row
+	 *
+	 * @param integer	$row	The row number to set the current pointer at
+	 */
+	public function seek($row = 1) {
+		$this->_position = $row;
+	}
 
-    /**
-     * Current key
-     *
-     * @return int
-     */
-    public function key() {
-        return $this->_position;
-    }
+	/**
+	 * Rewind the iterator to the starting row
+	 */
+	public function rewind() {
+		$this->_position = $this->_startRow;
+	}
 
-    /**
-     * Next value
-     */
-    public function next() {
-        ++$this->_position;
-    }
+	/**
+	 * Return the current row in this worksheet
+	 *
+	 * @return PHPExcel_Worksheet_Row
+	 */
+	public function current() {
+		return new PHPExcel_Worksheet_Row($this->_subject, $this->_position);
+	}
 
-    /**
-     * More PHPExcel_Worksheet_Row instances available?
-     *
-     * @return boolean
-     */
-    public function valid() {
-        return $this->_position <= $this->_subject->getHighestRow();
-    }
+	/**
+	 * Return the current iterator key
+	 *
+	 * @return int
+	 */
+	public function key() {
+		return $this->_position;
+	}
+
+	/**
+	 * Set the iterator to its next value
+	 */
+	public function next() {
+		++$this->_position;
+	}
+
+	/**
+	 * Set the iterator to its previous value
+	 */
+	public function prev() {
+		if ($this->_position > 1)
+			--$this->_position;
+	}
+
+	/**
+	 * Indicate if more rows exist in the worksheet
+	 *
+	 * @return boolean
+	 */
+	public function valid() {
+		return $this->_position <= $this->_subject->getHighestRow();
+	}
 }

Classes/PHPExcel/Writer/Excel5.php

@@ -321,6 +321,7 @@ class PHPExcel_Writer_Excel5 implements PHPExcel_Writer_IWriter
 		foreach ($this->_phpExcel->getAllSheets() as $sheet) {
 			if (count($sheet->getDrawingCollection()) > 0) {
 				$found = true;
+				break;
 			}
 		}
 

changelog.txt

@@ -25,6 +25,7 @@
 
 Fixed in SVN:
 - Feature:  (MBaker)    Options for cell caching using Igbinary and SQLite/SQlite3.
+- Feature:  (MBaker)    Additional row iterator options: allow a start row to be defined in the constructor; seek(), and prev() methods added.
 - General:  (MBaker)    Fix to build to ensure that Examples are included with the documentation
 - General:  (MBaker)    Reduce cell caching overhead using dirty flag to ensure that cells are only rewritten to the cache if they have actually been changed
 - General:  (MBaker)    Improved memory usage in CSV Writer