s19.htm

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              return resources.getString(key);<br>
              }<br>
              return null;<br>
              }<br>
              }</p>
            <hr size="1" noshade>
            <p align="center">&nbsp; </p>
            <p> 19.4.4 锁定左边列</p>
            <p>&nbsp;</p>
            <p align="center"><b>例19-9 锁定表格的左列</b></p>
            <hr noshade size="1">
            import java.awt.*;<br>
            import java.awt.event.*;<br>
            import javax.swing.*;<br>
            import javax.swing.event.*;<br>
            import javax.swing.table.*;
            <p>public class Test extends JFrame {<br>
              Object[][] listings = new Object[][] {<br>
              { &quot;28 Pickelodan&quot;, &quot;Mork and Mindy&quot;, &quot;Dukes 
              of Hazard&quot;, <br>
              &quot;I Love Lucy&quot;, &quot;Andy Griffith&quot;, &quot;Mission 
              Impossible&quot; },</p>
            <p> { &quot;29 Dizey&quot;, &quot;Rulan&quot;, &quot;&lt;-- Mulan&quot;, 
              &quot;&lt;-- Mulan&quot;, <br>
              &quot;&lt;-- Mulan&quot;, &quot;&lt;-- Mulan&quot; },</p>
            <p> { &quot;31 NBT&quot;, &quot;Nightly News&quot;, &quot;40/20&quot;, 
              <br>
              &quot;&lt;-- 40/20&quot;, &quot;LimeTime&quot;, &quot;&lt;-- LimeTime&quot; 
              },</p>
            <p> { &quot;32 AnimalUniverse&quot;, &quot;Amazing Animals&quot;,&quot;Animal 
              Rescues&quot;,<br>
              &quot;Cute Animals&quot;, &quot;Killer Animals&quot;, <br>
              &quot;Big and Small Animals&quot; },</p>
            <p> { &quot;34 DSPN&quot;, &quot;Tuesday Night FootBall&quot;, <br>
              &quot;&lt;--Tuesday Night FootBall&quot;, &quot;&lt;--Tuesday Night 
              FootBall&quot;, <br>
              &quot;&lt;--Tuesday Night FootBall&quot;, &quot;&lt;--Tuesday Night 
              FootBall&quot;},</p>
            <p> { &quot;37 TLC&quot;, &quot;Mind Mysteries&quot;, &quot;Our World&quot;, 
              <br>
              &quot;Ancient Wonders&quot;, &quot;UFOs&quot;, &quot;Ancient Inventions&quot; 
              },</p>
            <p> { &quot;38 THC&quot;, &quot;The Civil War&quot;, &quot;Stalin&quot;, 
              <br>
              &quot;Watergate&quot;, &quot;Kent State&quot;, &quot;WWII&quot; 
              },<br>
              };<br>
              Object[] columnNames = new Object[] {<br>
              &quot;Channel&quot;, &quot;7:30&quot;, &quot;8:00&quot;, &quot;8:30&quot;, 
              &quot;9:00&quot;, &quot;9:30&quot;<br>
              };<br>
              TableModel sharedModel = new DefaultTableModel(<br>
              listings, columnNames);<br>
              JTable table = new JTable(sharedModel),<br>
              headerTable = new JTable(sharedModel);</p>
            <p> TableColumnModel tcm = table.getColumnModel();<br>
              TableColumn firstColumn = tcm.getColumn(0);</p>
            <p> public Test() {<br>
              Container cp = getContentPane();</p>
            <p> setActualPreferredColumnWidths(table);<br>
              setActualPreferredColumnWidths(headerTable);</p>
            <p> table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);<br>
              headerTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);</p>
            <p> headerTable.getTableHeader().setReorderingAllowed(false);</p>
            <p> headerTable.setPreferredScrollableViewportSize(<br>
              new Dimension(<br>
              firstColumn.getPreferredWidth() +<br>
              headerTable.getColumnModel().getColumnMargin(), <br>
              0));</p>
            <p> cp.add(new ControlPanel(), BorderLayout.NORTH);<br>
              cp.add(new JScrollPane(table), BorderLayout.CENTER);<br>
              }<br>
              class ControlPanel extends JPanel {<br>
              JCheckBox checkBox = new JCheckBox(&quot;First Column Locked&quot;);</p>
            <p> public ControlPanel() {<br>
              add(checkBox);</p>
            <p> checkBox.addActionListener(new ActionListener() {<br>
              public void actionPerformed(ActionEvent e) {<br>
              JScrollPane scrollPane = (JScrollPane)<br>
              SwingUtilities.getAncestorOfClass(<br>
              JScrollPane.class, table);</p>
            <p> if(checkBox.isSelected()) {<br>
              tcm.removeColumn(firstColumn);<br>
              scrollPane.setRowHeaderView(headerTable);<br>
              scrollPane.setCorner(<br>
              JScrollPane.UPPER_LEFT_CORNER,<br>
              headerTable.getTableHeader());<br>
              }<br>
              else {<br>
              tcm.addColumn(firstColumn);</p>
            <p> int numCols = tcm.getColumnCount();<br>
              tcm.moveColumn(numCols-1, 0);<br>
              scrollPane.setRowHeaderView(null);<br>
              }<br>
              }<br>
              });<br>
              }<br>
              }<br>
              public void setActualPreferredColumnWidths(JTable table) {<br>
              int columnCount = table.getColumnCount();</p>
            <p> for(int i=0; i &lt; columnCount; ++i) {<br>
              TableColumn c = table.getColumnModel().getColumn(i);<br>
              int w = getActualPreferredColumnWidth(c);</p>
            <p> c.setPreferredWidth(w);<br>
              }<br>
              }<br>
              public int getActualPreferredColumnWidth(TableColumn col) {<br>
              int hw = columnHeaderWidth(col), // hw = header width<br>
              cw = widestCellInColumn(col); // cw = column width</p>
            <p> return hw &gt; cw ? hw : cw;<br>
              }<br>
              private int columnHeaderWidth(TableColumn col) {<br>
              TableCellRenderer renderer = col.getHeaderRenderer();</p>
            <p> Component comp = renderer.getTableCellRendererComponent(<br>
              table, col.getHeaderValue(), <br>
              false, false, 0, 0);</p>
            <p> return comp.getPreferredSize().width;<br>
              }<br>
              private int widestCellInColumn(TableColumn col) {<br>
              int c = col.getModelIndex(), width=0, maxw=0;</p>
            <p> for(int r=0; r &lt; table.getRowCount(); ++r) {<br>
              TableCellRenderer renderer = <br>
              table.getCellRenderer(r,c);</p>
            <p> Component comp = <br>
              renderer.getTableCellRendererComponent(<br>
              table, table.getValueAt(r,c), <br>
              false, false, r, c);</p>
            <p> width = comp.getPreferredSize().width;<br>
              maxw = width &gt; maxw ? width : maxw;<br>
              }<br>
              return maxw;<br>
              }<br>
              public static void main(String args[]) {<br>
              GraphicJavaApplication.launch(<br>
              new Test(),&quot;Locking the Left-Hand Column&quot;,<br>
              300,300,600,210);<br>
              }<br>
              }<br>
              class GraphicJavaApplication extends WindowAdapter {<br>
              public static void launch(final JFrame f, String title,<br>
              final int x, final int y, <br>
              final int w, int h) {<br>
              f.setTitle(title);<br>
              f.setBounds(x,y,w,h);<br>
              f.setVisible(true);</p>
            <p> f.setDefaultCloseOperation(<br>
              WindowConstants.DISPOSE_ON_CLOSE);</p>
            <p> f.addWindowListener(new WindowAdapter() {<br>
              public void windowClosed(WindowEvent e) {<br>
              System.exit(0);<br>
              }<br>
              });<br>
              }<br>
              }</p>
            <hr size="1" noshade>
            <p> 19.5 表格选取</p>
            <p>&nbsp;</p>
            <p align="center"><b>例19-10 表格选取</b></p>
            <hr noshade size="1">
            import javax.swing.*;<br>
            import javax.swing.event.*;<br>
            import javax.swing.table.*;<br>
            import java.awt.*;<br>
            import java.awt.event.*;
            <p>public class Test extends JFrame {<br>
              Object[] selectionModes = new Object[] {<br>
              &quot;SINGLE_SELECTION&quot;,<br>
              &quot;SINGLE_INTERVAL_SELECTION&quot;,<br>
              &quot;MULTIPLE_INTERVAL_SELECTION&quot;,<br>
              };<br>
              int[] selectionConstants = {<br>
              ListSelectionModel.SINGLE_SELECTION,<br>
              ListSelectionModel.SINGLE_INTERVAL_SELECTION,<br>
              ListSelectionModel.MULTIPLE_INTERVAL_SELECTION,<br>
              };</p>
            <p> JTable table = new JTable(10,10);</p>
            <p> public Test() {<br>
              Container contentPane = getContentPane();<br>
              contentPane.add(new ControlPanel(), BorderLayout.NORTH);<br>
              contentPane.add(new JScrollPane(table), <br>
              BorderLayout.CENTER);</p>
            <p> }<br>
              class ControlPanel extends JPanel {<br>
              JComboBox combo = new JComboBox(selectionModes);</p>
            <p> public ControlPanel() {<br>
              setBorder(BorderFactory.createTitledBorder(<br>
              &quot;Selection Modes&quot;));<br>
              add(combo);<br>
              initializeCombo();</p>
            <p> combo.addActionListener(new ActionListener() {<br>
              public void actionPerformed(ActionEvent e) {<br>
              int index = combo.getSelectedIndex();</p>
            <p> table.setSelectionMode(<br>
              selectionConstants[index]);<br>
              }<br>
              });<br>
              } <br>
              private void initializeCombo() {<br>
              int mode = <br>
              table.getSelectionModel().getSelectionMode();</p>
            <p> if(mode == ListSelectionModel.SINGLE_SELECTION) { <br>
              combo.setSelectedIndex(0);<br>
              }<br>
              else if(mode == <br>
              ListSelectionModel.SINGLE_INTERVAL_SELECTION) {<br>
              combo.setSelectedIndex(1);<br>
              }<br>
              else if(mode == <br>
              ListSelectionModel.MULTIPLE_INTERVAL_SELECTION) {<br>
              combo.setSelectedIndex(2);<br>
              }<br>
              }<br>
              }<br>
              public static void main(String args[]) {<br>
              GraphicJavaApplication.launch(<br>
              new Test(),&quot;JTable Selection Modes&quot;,300,300,450,300);<br>
              }<br>
              }<br>
              class GraphicJavaApplication extends WindowAdapter {<br>
              public static void launch(final JFrame f, String title,<br>
              final int x, final int y, <br>
              final int w, int h) {<br>
              f.setTitle(title);<br>
              f.setBounds(x,y,w,h);<br>
              f.setVisible(true);</p>
            <p> f.setDefaultCloseOperation(<br>
              WindowConstants.DISPOSE_ON_CLOSE);</p>
            <p> f.addWindowListener(new WindowAdapter() {<br>
              public void windowClosed(WindowEvent e) {<br>
              System.exit(0);<br>
              }<br>
              });<br>
              }<br>
              }</p>
            <hr size="1" noshade>
            <p align="center">&nbsp; </p>
            <p> 19.6 绘制和编辑</p>
            <p>&nbsp;</p>
            <p align="center">&nbsp; </p>
            <p> 19.6.1 使用表格单绘制器和编辑器</p>
            <p>&nbsp;</p>
            <p align="center"><b>例19-11 StereoDeckModel类</b></p>
            <hr noshade size="1">
            import javax.swing.*;<br>
            import javax.swing.table.*;
            <p>class StereoDeckModel extends AbstractTableModel {<br>
              String[] columnNames = {<br>
              &quot;In Use&quot;, &quot;Manufacturer&quot;, &quot;Model&quot;, 
              &quot;Price&quot;, &quot;Dolby&quot;,<br>
              &quot;Bass&quot;, &quot;Volume&quot;<br>
              };<br>
              Object[][] data = {<br>
              { Boolean.FALSE, &quot;Sony&quot;, &quot;1501A&quot;, <br>
              new Double(129.99), Boolean.TRUE,<br>
              Boolean.TRUE, new Integer(50) }, </p>
            <p> { Boolean.FALSE, &quot;Phillips&quot;, &quot;86A4&quot;, <br>
              new Double(159.99), Boolean.TRUE,<br>
              Boolean.FALSE, new Integer(35) }, </p>
            <p> { Boolean.TRUE, &quot;Kenwood&quot;, &quot;33-801-A&quot;, <br>
              new Double(199.99), Boolean.FALSE,<br>
              Boolean.TRUE, new Integer(77) }, </p>
            <p> { Boolean.FALSE, &quot;Blaupunkt&quot;, &quot;7622A&quot;, <br>
              new Double(229.99), Boolean.TRUE,<br>
              Boolean.FALSE, new Integer(19) }, </p>
            <p> { Boolean.FALSE, &quot;Akai&quot;, &quot;9733&quot;, <br>
              new Double(259.99), Boolean.TRUE,<br>
              Boolean.FALSE, new Integer(68) }, </p>
            <p> { Boolean.FALSE, &quot;Sony&quot;, &quot;1520B&quot;, <br>
              new Double(349.99), Boolean.FALSE,<br>
              Boolean.FALSE, new Integer(94) }, </p>
            <p> { Boolean.FALSE, &quot;Kenwood&quot;, &quot;2289B&quot;, <br>
              new Double(499.99), Boolean.FALSE,<br>
              Boolean.FALSE, new Integer(44) }, <br>
              };<br>
              public Object getValueAt(int row, int col) {<br>
              return data[row][col];<br>
              }<br>
              public int getRowCount() { <br>
              return data.length; <br>
              }<br>