Swing/MoveRow のバックアップ(No.1)

Terai Atsuhiro 2021-08-12 (木) 14:12:29
class DownAction extends AbstractAction{
  public DownAction(String str) {
    super(str);
  }
  public void actionPerformed(ActionEvent evt) {
    downActionPerformed(evt);
  }
}
private void downActionPerformed(ActionEvent e) {

  int[] pos = jtable.getSelectedRows();
  if(pos==null || pos.length<=0) return;
  DefaultTableModel mdl = (DefaultTableModel) jtable.getModel();
  if((e.getModifiers() & ActionEvent.SHIFT_MASK)!=0) {
    mdl.moveRow(pos[0], pos[pos.length-1], mdl.getRowCount()-pos.length);
    jtable.setRowSelectionInterval(mdl.getRowCount()-pos.length,
      mdl.getRowCount()-1);
  }else{
    if(pos[pos.length-1]==mdl.getRowCount()-1) return;
    mdl.moveRow(pos[0], pos[pos.length-1], pos[0]+1);
    jtable.setRowSelectionInterval(pos[0]+1, pos[pos.length-1]+1);
  }
  scrollSelectedRow();
}

public void showRowPop(MouseEvent e) {
  int row     = jtable.rowAtPoint(e.getPoint());
  int count   = jtable.getSelectedRowCount();
  int[] ilist = jtable.getSelectedRows();
  boolean flg = true;
  for(int i=0;i<ilist.length;i++) {
    if(ilist[i]==row) {
      flg = false;
      break;
    }
  }
  if(row>0 && flg) jtable.setRowSelectionInterval(row, row);
  JPopupMenu pop = new JPopupMenu();

  act.setEnabled(count>1?false:true);
  pop.add(act);
  pop.addSeparator();

  act.setEnabled(row<0?false:true);
  pop.add(act);
  pop.addSeparator();

  act.setEnabled(count>0?true:false);
  pop.add(act);

  act.setEnabled(count>0?true:false);
  pop.add(act);
  pop.show((JComponent)e.getSource(), e.getX(), e.getY());
}