anyselectiontableui.java

使用swing做的熟悉控件使用的DEMO

import java.awt.Point;
import java.awt.event.MouseEvent;

import javax.swing.JComponent;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.table.TableCellEditor;
import javax.swing.plaf.basic.BasicTableUI;
import javax.swing.plaf.ComponentUI;
import javax.swing.event.MouseInputListener;

/**
  * This class doesn't change the L&F of the JTable but
  * listens to mouseclicks and updates the TableSelectionModel.
  * @author Jan-Friedrich Mutter ([e-mail])
  */
public class AnySelectionTableUI extends BasicTableUI {
  public static ComponentUI createUI(JComponent c) {
    return new AnySelectionTableUI();
  }

  protected MouseInputListener createMouseInputListener() {
    return new AnySelectionMouseInputHandler();
  }

  /**
    * to get access to the table from the inner class MyMouseInputHandler
    */
  protected JTable getTable() {
    return table;
  }

  /**
    * updates the TableSelectionModel.
    */
  protected void updateTableSelectionModel(int row, int column,
                                   boolean ctrlDown, boolean shiftDown) {

    AnySelectionTable t = (AnySelectionTable)getTable();
    column = t.convertColumnIndexToModel(column);
    TableSelectionModel tsm = t.getTableSelectionModel();

    int anchorIndex = tsm.getListSelectionModelAt(column).getAnchorSelectionIndex();

    if (ctrlDown) {
      if (tsm.isSelected(row, column)) {
        tsm.removeSelection(row, column);
      } else {
        tsm.addSelection(row, column);
      }
    } else if ((shiftDown) && (anchorIndex != -1)){
      tsm.setSelectionInterval(anchorIndex, row, column);
    } else {
      tsm.setSelection(row, column);
    }
  } //updateTableSelectionModel()

  /**
    * Almost the same implementation as its super class.
    * Except updating the TableSelectionModel rather than the
    * default ListSelectionModel.
    */
  //Some methods which are called in the super class are private.
  //Thus I couldn't call them. Calling the method of the super
  //class itself should do it, but you never know. Sideeffects may occur...
  public class AnySelectionMouseInputHandler extends MouseInputHandler {

    public void mousePressed(MouseEvent e) {
      super.mousePressed(e);

	    if (!SwingUtilities.isLeftMouseButton(e)) {
        return;
	    }

      /*if (phantomMousePressed == true) {
        return;
      }
      phantomMousePressed = true;*/

      Point p = e.getPoint();
      int row = getTable().rowAtPoint(p);
      int column = getTable().columnAtPoint(p);
	    // The autoscroller can generate drag events outside the Table's range.
      if ((column == -1) || (row == -1)) {
        return;
      }

       /* Adjust the selection if the event was not forwarded 
	     * to the editor above *or* the editor declares that it 
	     * should change selection even when events are forwarded 
	     * to it.
	     */
	    // PENDING(philip): Ought to convert mouse event, e, here. 
	    //if (!repostEvent || table.getCellEditor().shouldSelectCell(e)) {
      TableCellEditor tce = getTable().getCellEditor();
      if ((tce==null) || (tce.shouldSelectCell(e))) {
        getTable().requestFocus();
        //setValueIsAdjusting(true);
        //if (getTable().getValueAt(row, column) != null) {
          updateTableSelectionModel(row, column, e.isControlDown(), e.isShiftDown());
          //need to do this because JTable is not painted properly when
          //user does Shift-Click on a column where a not selected
          //cell is the anchor ...
          if (e.isShiftDown())
            getTable().repaint();
        //}
      }
    }//mousePressed()
  }
}