git.gag.com Git - debian/openrocket/blob - core/src/net/sf/openrocket/gui/components/UnitCellEditor.java

   1 package net.sf.openrocket.gui.components;
   2
   3 import java.awt.Component;
   4 import java.awt.event.ActionEvent;
   5 import java.awt.event.ActionListener;
   6
   7 import javax.swing.AbstractCellEditor;
   8 import javax.swing.JComboBox;
   9 import javax.swing.JTable;
  10 import javax.swing.table.TableCellEditor;
  11
  12 import net.sf.openrocket.unit.Unit;
  13 import net.sf.openrocket.unit.UnitGroup;
  14
  15
  16 /**
  17  * A cell editor that returns a combo box containing a selection of units.
  18  * Using classes must implement the {@link #getUnitGroup(Unit, int, int)} method
  19  * to return the appropriate unit group for the selection.
  20  *
  21  * @author Sampo Niskanen <sampo.niskanen@iki.fi>
  22  */
  23 public abstract class UnitCellEditor extends AbstractCellEditor
  24                 implements TableCellEditor, ActionListener {
  25
  26         private final JComboBox editor;
  27
  28         public UnitCellEditor() {
  29                 editor = new JComboBox();
  30                 editor.setEditable(false);
  31                 editor.addActionListener(this);
  32         }
  33
  34
  35         @Override
  36         public Component getTableCellEditorComponent(JTable table, Object value,
  37                         boolean isSelected, int row, int column) {
  38
  39                 Unit unit = (Unit) value;
  40                 UnitGroup group = getUnitGroup(unit, row, column);
  41
  42                 editor.removeAllItems();
  43                 for (Unit u : group.getUnits()) {
  44                         editor.addItem(u);
  45                 }
  46
  47                 editor.setSelectedItem(unit);
  48
  49                 return editor;
  50         }
  51
  52
  53         @Override
  54         public Object getCellEditorValue() {
  55                 return editor.getSelectedItem();
  56         }
  57
  58
  59
  60         @Override
  61         public void actionPerformed(ActionEvent e) {
  62                 // End editing when a value has been selected
  63                 this.fireEditingStopped();
  64         }
  65
  66
  67         /**
  68          * Return the unit group corresponding to the specified cell.
  69          *
  70          * @param value         the cell's value.
  71          * @param row           the cell's row.
  72          * @param column        the cell's column.
  73          * @return                      the unit group of this cell.
  74          */
  75         protected abstract UnitGroup getUnitGroup(Unit value, int row, int column);
  76
  77 }