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1   ////////////////////////////////////////////////////////////////////////////////
2   // MillScript-Excel: an Open Spice interpreter and batch website creation tool
3   // Copyright (C) 2006 Open World Ltd, Kevin Rogers
4   //
5   // This file is part of MillScript-Excel.
6   //
7   // MillScript-Excel is free software; you can redistribute it and/or modify it under
8   // the terms of the GNU General Public License as published by the Free
9   // Software Foundation; either version 2 of the License, or (at your option)
10  // any later version.
11  //
12  // MillScript-Excel is distributed in the hope that it will be useful, but WITHOUT
13  // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14  // FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
15  // more details.
16  //
17  // You should have received a copy of the GNU General Public License along with
18  // MillScript-Excel; if not, write to the Free Software Foundation, Inc., 59 Temple
19  // Place, Suite 330, Boston, MA  02111-1307  USA
20  ////////////////////////////////////////////////////////////////////////////////
21  package org.millscript.office.spreadsheet.rows;
22  
23  import org.millscript.commons.util.iterator.AbstractListIterator;
24  import org.millscript.office.spreadsheet.Cell;
25  import org.millscript.office.spreadsheet.Row;
26  import org.millscript.office.spreadsheet.rows.RowImpl;
27  
28  
29  /**
30   * 
31   */
32  public class RowListIterator extends AbstractListIterator< Row > {
33  
34      /**
35       * The backing data store for this worksheet, a two dimensional array,
36       * an array of array of cells. A null entry indicates the row is empty.
37       */
38      private Cell[][] rowData;
39  
40      /**
41       * 
42       */
43      public RowListIterator( final Cell[][] rows, final boolean share ) {
44          if ( rows == null || share ) {
45              this.rowData = rows;
46          } else {
47              this.rowData = new Cell[ rows.length ][];
48              System.arraycopy( rows, 0, this.rowData, 0, rows.length );
49              for ( int i = 0; i < rows.length; i++ ) {
50                  this.rowData[ i ] = new Cell[ rows[ i ].length ];
51                  System.arraycopy( rows[ i ], 0, this.rowData[ i ], 0, rows[ i ].length );
52              }
53          }
54      }
55  
56      @Override
57      protected boolean outOfBounds() {
58          return this.rowData == null || super.position == 0 || super.position > this.rowData.length;
59      }
60  
61      @Override
62      protected Row getValue() {
63          final Cell[] row = this.rowData[ super.position - 1 ];
64          if ( row == null ) {
65              return new RowImpl();
66          } else {
67              return new RowImpl( row, true );
68          }
69      }
70  
71      public boolean hasNext() {
72          return this.rowData != null && super.position + 1 <= this.rowData.length;
73      }
74  
75  }