git.gag.com Git - debian/openrocket/blob - 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
  29         public UnitCellEditor() {
  30                 editor = new JComboBox();
  31                 editor.setEditable(false);
  32                 editor.addActionListener(this);
  33         }
  34
  35
  36         @Override
  37         public Component getTableCellEditorComponent(JTable table, Object value,
  38                         boolean isSelected, int row, int column) {
  39
  40                 Unit unit = (Unit) value;
  41                 UnitGroup group = getUnitGroup(unit, row, column);
  42
  43                 editor.removeAllItems();
  44                 for (Unit u: group.getUnits()) {
  45                         editor.addItem(u);
  46                 }
  47
  48                 editor.setSelectedItem(unit);
  49
  50                 return editor;
  51         }
  52
  53
  54         @Override
  55         public Object getCellEditorValue() {
  56                 return editor.getSelectedItem();
  57         }
  58
  59
  60
  61         @Override
  62         public void actionPerformed(ActionEvent e) {
  63                 // End editing when a value has been selected
  64                 this.fireEditingStopped();
  65         }
  66
  67
  68         /**
  69          * Return the unit group corresponding to the specified cell.
  70          *
  71          * @param value         the cell's value.
  72          * @param row           the cell's row.
  73          * @param column        the cell's column.
  74          * @return                      the unit group of this cell.
  75          */
  76         protected abstract UnitGroup getUnitGroup(Unit value, int row, int column);
  77
  78 }