javax.swing.JScrollPane#addComponentListener ( )源码实例Demo

/**
 * Creates and returns a scroll panel which wraps the specified view component.<br>
 * The returned scroll panel disables vertical scroll bar, and only displays the horizontal scroll bar when the view does not fit
 * into the size of the view port. When the view fits into the view port, the scroll pane will not claim the space of the scroll bar.
 * 
 * @param view               view to wrap in the scroll pane
 * @param parentToRevalidate parent to revalidate when the scroll pane decides to change its size
 * 
 * @return the created self managed scroll pane
 */
public static JScrollPane createSelfManagedScrollPane( final Component view, final JComponent parentToRevalidate ) {
	final JScrollPane scrollPane = new JScrollPane( view );
	
	scrollPane.setVerticalScrollBarPolicy( JScrollPane.VERTICAL_SCROLLBAR_NEVER );
	scrollPane.getHorizontalScrollBar().setPreferredSize( new Dimension( 0, 12 ) ); // Only want to restrict the height, width doesn't matter (it takes up whole width)
	scrollPane.getHorizontalScrollBar().setUnitIncrement( 10 );
	
	final ComponentListener scrollPaneComponentListener = new ComponentAdapter() {
		@Override
		public void componentResized( final ComponentEvent event ) {
			scrollPane.setHorizontalScrollBarPolicy( view.getWidth() < scrollPane.getWidth() ? JScrollPane.HORIZONTAL_SCROLLBAR_NEVER : JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS );
			scrollPane.setPreferredSize( null );
			scrollPane.setPreferredSize( new Dimension( 10, scrollPane.getPreferredSize().height ) );
			parentToRevalidate.revalidate();
		}
	};
	scrollPane.addComponentListener( scrollPaneComponentListener );
	
	return scrollPane;
}
 

private Component makeCenterPanel() {
   speciesSelectPanel = new JPanel(new WrapLayout()) {
      private static final long serialVersionUID = 5094314715314389100L;
      
      // Fix to make it play nice with the scroll bar.
      @Override
      public Dimension getPreferredSize() {
         Dimension d = super.getPreferredSize();
         d.width = (int) (d.getWidth() - 20);
         return d;
      }
   };
   final JScrollPane ret = new JScrollPane(speciesSelectPanel, ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS,
         ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
   ret.addComponentListener(new ComponentAdapter() {
      @Override
      public void componentResized(ComponentEvent e) {
         ret.revalidate();
      }
   });
   ret.getVerticalScrollBar().setUnitIncrement(27);
   return ret;
}
 

@SuppressWarnings("serial")
private Component makeRosterPanel() {
   rosterPanel = new JPanel(new WrapLayout()) {
      // Fix to make it play nice with the scroll bar.
      @Override
      public Dimension getPreferredSize() {
         Dimension d = super.getPreferredSize();
         d.width = (int) (d.getWidth() - 20);
         return d;
      }
   };
   rosterScrollPane = new JScrollPane(rosterPanel, ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS,
         ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
   rosterScrollPane.addComponentListener(new ComponentAdapter() {
      @Override
      public void componentResized(ComponentEvent e) {
         rosterScrollPane.revalidate();
      }
   });
   rosterScrollPane.getVerticalScrollBar().setUnitIncrement(27);
   return rosterScrollPane;
}
 

@SuppressWarnings("serial")
private Component makeCenterPanel() {
   rosterEntryPanel = new JPanel(new WrapLayout()) {
      // Fix to make it play nice with the scroll bar.
      @Override
      public Dimension getPreferredSize() {
         Dimension d = super.getPreferredSize();
         d.width = (int) (d.getWidth() - 20);
         return d;
      }
   };
   final JScrollPane ret = new JScrollPane(rosterEntryPanel, ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS,
         ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
   ret.addComponentListener(new ComponentAdapter() {
      @Override
      public void componentResized(ComponentEvent e) {
         ret.revalidate();
      }
   });
   ret.getVerticalScrollBar().setUnitIncrement(27);
   return ret;
}
 

@SuppressWarnings("unchecked")
public SummaryTablePanel(NMONVisualizerGui gui, JFrame parent) {
    super();

    this.gui = gui;
    this.parent = parent;

    fileChooser = new AnalysisSetFileChooser(gui, analysisSet);
    menu = new JMenu("Table");
    setupMenu(parent);

    setLayout(new BorderLayout());

    // combo box with various data statistics for use with the results table
    statsPanel = new JPanel();
    setupStatsPanel();

    JPanel top = new JPanel(new BorderLayout());
    setupTopPanel(top);
    add(top, BorderLayout.PAGE_START);

    // each table has its own data model
    dataSetTable = new ByDataSetTable(gui);
    statisticsTable = new GUITable(gui);

    ByDataSetTableModel dataSetTableModel = new ByDataSetTableModel(gui, analysisSet);
    ByStatisticTableModel statTableModel = new ByStatisticTableModel(gui, analysisSet);

    dataSetTable.setModel(dataSetTableModel);
    statisticsTable.setModel(statTableModel);

    setupTable(dataSetTable, parent);
    setupTable(statisticsTable, parent);

    scrollPane = new JScrollPane(statisticsTable);
    scrollPane.getViewport().setBackground(java.awt.Color.WHITE);
    // could be inefficient to have both tables updating when only 1 is visible...
    scrollPane.addComponentListener(new ScrollingTableFix(statisticsTable, scrollPane));
    scrollPane.addComponentListener(new ScrollingTableFix(dataSetTable, scrollPane));
    scrollPane.setBorder(Styles.createBottomLineBorder(this));

    add(scrollPane, BorderLayout.CENTER);

    // alert users they can drag onto the tables
    JLabel label = new JLabel("Click and drag measurements from the tree onto this table");
    label.setFont(Styles.BOLD);
    label.setHorizontalAlignment(SwingConstants.CENTER);

    add(label, BorderLayout.PAGE_END);

    analysisSet.addListener(this);

    // check the count column, if it is 0, do not display
    ((TableRowSorter<ByStatisticTableModel>) statisticsTable.getRowSorter())
            .setRowFilter(new RowFilter<ByStatisticTableModel, Integer>() {
                @Override
                public boolean include(RowFilter.Entry<? extends ByStatisticTableModel, ? extends Integer> entry) {
                    ByStatisticTableModel model = ((ByStatisticTableModel) entry.getModel());
                    int idx = model.getColumnIndex(Statistic.COUNT.toString());

                    if (idx == -1) {
                        throw new IllegalStateException(
                                model + "has no column named " + Statistic.COUNT.toString());
                    }
                    else {
                        Object value = model.getEnabledValueAt(entry.getIdentifier(), idx);
                        int i = (Integer) value;
                        return i != 0;
                    }
                }
            });
}