fixedcolumnexample.java

tame,扩展了好多SWing组件:JTable

/* (swing1.1beta3) */
package tame.examples;

import java.awt.BorderLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JViewport;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.table.AbstractTableModel;

/**  Thows an NPE
<pre>
Exception in thread "main" java.lang.NullPointerException
        at tame.examples.FixedColumnExample.access$000(FixedColumnExample.java:21)
</pre>
@version 1.0 12/05/98
@author Nobuo Tamemasa
*/
public class FixedColumnExample extends JFrame {
  Object[][] data;
  Object[] column;
  JTable fixedTable,table;

  public FixedColumnExample() {
    super( "Fixed Column Example" );
    setSize( 400, 150 );

    data =  new Object[][]{
        {"1","11","A","","","","",""},
        {"2","22","","B","","","",""},
        {"3","33","","","C","","",""},
        {"4","44","","","","D","",""},
        {"5","55","","","","","E",""},
        {"6","66","","","","","","F"}};
    column = new Object[]{"fixed 1","fixed 2","a","b","c","d","e","f"};

    AbstractTableModel fixedModel = new AbstractTableModel() {
      public int getColumnCount() { return 2; }
      public int getRowCount() { return data.length; }
      public String getColumnName(int col) {
       return (String)column[col];
      }
      public Object getValueAt(int row, int col) {
        return data[row][col];
      }
    };
    AbstractTableModel    model = new AbstractTableModel() {
      public int getColumnCount() { return column.length -2; }
      public int getRowCount() { return data.length; }
      public String getColumnName(int col) {
       return (String)column[col +2];
      }
      public Object getValueAt(int row, int col) {
        return data[row][col+2];
      }
      public void setValueAt(Object obj, int row, int col) {
        data[row][col +2] = obj;
      }
      public boolean CellEditable(int row, int col) {
        return true;
      }
    };

    fixedTable = new JTable( fixedModel ) {
      public void valueChanged(ListSelectionEvent e) {
        super.valueChanged(e);
        checkSelection(true);
      }
    };
    table = new JTable( model ) {
      public void valueChanged(ListSelectionEvent e) {
        super.valueChanged(e);
        checkSelection(false);
      }
    };
    fixedTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
    table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
    fixedTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

    JScrollPane scroll = new JScrollPane( table );
    JViewport viewport = new JViewport();
    viewport.setView(fixedTable);
    viewport.setPreferredSize(fixedTable.getPreferredSize());
    scroll.setRowHeaderView(viewport);
    scroll.setCorner(JScrollPane.UPPER_LEFT_CORNER,fixedTable.getTableHeader());

    getContentPane().add(scroll, BorderLayout.CENTER);
  }

  private void checkSelection(boolean isFixedTable) {
    int fixedSelectedIndex = fixedTable.getSelectedRow();
    int      selectedIndex = table.getSelectedRow();
    if (fixedSelectedIndex != selectedIndex) {
      if (isFixedTable) {
        table.setRowSelectionInterval(fixedSelectedIndex,fixedSelectedIndex);
      } else {
        fixedTable.setRowSelectionInterval(selectedIndex,selectedIndex);
      }
    }
  }

  public static void main(String[] args) {
    FixedColumnExample frame = new FixedColumnExample();
    frame.addWindowListener( new WindowAdapter() {
      public void windowClosing( WindowEvent e ) {
	System.exit(0);
      }
    });
    frame.setVisible(true);
  }
}