尝试使用适当的行标题创建JTable

时间：2011-11-03 22:00:49

标签： java swing header jtable look-and-feel

我正在尝试创建一个JTable，它有一个看起来就像列标题的行标题，而且我花了太多时间在它上面：/ 我的情况类似于这个问题：JTable Row Header Implementation 也许这一个： customizing jtable cellrenderer with table's cell header color

他们似乎还没有把我带到那里。我搜索了很多例子，但都缺乏。甚至没有任何带有行标题的表的例子来自Oracle / Sun.看起来这种表格不应该那么罕见。

这个只是格式化第一列，但它看起来不像列标题： http://java-swing-tips.blogspot.com/2011/01/jtable-rowheader.html

这个似乎使用JList作为行标题，并且它有对齐问题（每行关闭+1像素），并且在设置外观时看起来不太好。 http://www.java2s.com/Code/Java/Swing-Components/TableRowHeaderExample.htm

这个似乎是我需要使用的想法（行标题是一个单独的JTable，但随后作为行标题加载到JScrollPane），但我需要调整它到我的代码然后确保行标题获得标题的正确外观和感觉 http://www.chka.de/swing/table/row-headers/JTable.html

这就是我所做的减去最后一点。我尝试将表头的渲染器也作为行标题的渲染器。行标题/第一列现在是灰色而不是白色，就像它只是另一个数据列时一样，但仍然看起来不像列标题。这是正确的吗？或者我应该坚持将它作为主表中的常规列保留并用它做其他事情？

所以这是我更新表格的代码。此方法仅为列标题采用String数组，为行标题采用String数组，为主数据采用2D String数组。我有一个JTable dispTableRowHeader 用于行标题，JTable dispTable 用于主数据表。

    private void updateDispTable(String[][] graphicalTable, String[] graphicalTableColumnHeader, String[] graphicalTableRowHeader) {

    //set model for the main data table, put in data. Also prevent editing cells
    dispTable.setModel(new javax.swing.table.DefaultTableModel(
        graphicalTable,
        graphicalTableColumnHeader
    ){
        @Override
        public boolean isCellEditable(int rowIndex, int mColIndex) {
            return false;
        }
    });

    //some mods for main data table
    dispTable.getTableHeader().setReorderingAllowed(false);//Was also able to do this within NetBeans GUI Builder by doing Table Contents from Jtable inspector item
    dispTable.getTableHeader().setResizingAllowed(false);

    //load main table to scrollpane
    jScrollPane2.setViewportView(dispTable);

    //get model for JTable that will be used as the row header, fill in values
    DefaultTableModel rowHeaderTableModel = new DefaultTableModel(0, 1);//one column
    for (int i = 0; i < graphicalTable.length; i++)
        rowHeaderTableModel.addRow(new Object[] { graphicalTableRowHeader[i] } );

    //set model for row header, put in data. Alter renderer to make it like col header
    dispTableRowHeader.setModel(rowHeaderTableModel);
    dispTableRowHeader.setDefaultRenderer(Object.class, dispTableRowHeader.getTableHeader().getDefaultRenderer());//makes it gray but not like the header :/
    //dispTableRowHeader.setDefaultRenderer(Object.class, jScrollPane2.getColumnHeader().getDefaultRenderer());

    //load row header to scrollpane's row header
    jScrollPane2.setRowHeaderView(dispTableRowHeader);

    //set the table corner and disallow reordering and resizing
    JTableHeader corner = dispTableRowHeader.getTableHeader();
    corner.setReorderingAllowed(false);
    corner.setResizingAllowed(false);
    jScrollPane2.setCorner(JScrollPane.UPPER_LEFT_CORNER, corner);//load to scrollpane
}

我非常感谢任何帮助！

编辑以下编辑 我创建了一个全新的项目进行实验并尝试了trashgod的方法（尽管是为行标题而不是第二行），我发现它给了我相同的结果，只是单元格样式为灰色而不是像标题样式。然后我尝试删除我的外观和感觉调整

        // Set System L&F
        UIManager.setLookAndFeel( UIManager.getSystemLookAndFeelClassName() );

然后行标题看起来与列标题相同！ ..但这是在Nimbus或任何默认的外观和感觉。见下图。第一个是我的外观和感觉设置为上面的系统（在Win7中），第二个是默认的。

系统外观（Win7） - I adjusted look and feel, set to system look and feel

Java的Nimbus外观 - default look and feel

我的程序肯定会发生同样的事情。所以现在看来​​我的问题在于外观和感觉。我希望它看起来像第一个图像（系统的外观和感觉），但左侧也有样式。

顺便说一下，这是MySQL Workbench的Win7中的一个例子，它具有正确设计的行和列标题，它们甚至在鼠标悬停时将单元格变成蓝色。太糟糕了，它不是用Java制作的，所以我可以尝试检查它们是如何做到的。

MySQL Workbench screenshot- MySQL Workbench screenshot

编辑以下编辑 SSCCE代码

package mytableexample2;
import java.awt.Component;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableCellRenderer;

public class MyTableExample2 extends javax.swing.JFrame {

    public MyTableExample2() {
        initComponents();
    }

    @SuppressWarnings("unchecked")
    private void initComponents() {
        jScrollPane1 = new javax.swing.JScrollPane();
        jTable1 = new javax.swing.JTable(){
            @Override
            public Component prepareRenderer(
                    TableCellRenderer renderer, int row, int col) {
                if (col == 0) {
                    return this.getTableHeader().getDefaultRenderer()
                        .getTableCellRendererComponent(this,
                        this.getValueAt(row, col), false, false, row, col);
                } else {
                    return super.prepareRenderer(renderer, row, col);
                }
            }
        };
        jTable1.setAutoCreateRowSorter(false);
        final JTableHeader header = jTable1.getTableHeader();
        header.setDefaultRenderer(new HeaderRenderer(jTable1));

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jTable1.setModel(new javax.swing.table.DefaultTableModel(
            new Object [][] {
                {"Row 1", "Data 2", "Data 3", "Data 4", "Data 5"},
                {"Row 2", "Data 6", "Data 7", "Data 8", "Data 9"},
                {"Row 3", "Data 10", "Data 11", "Data 12", "Data 13"}
            },
            new String [] {
                "", "Col 1", "Col 2", "Col 3", "Col 4"
            }
        ));
        jScrollPane1.setViewportView(jTable1);


        //Netbeans generated layout
        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 380, Short.MAX_VALUE)
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 278, Short.MAX_VALUE)
                .addContainerGap())
        );
        pack();
    }


    public static void main(String args[]) {
        try {
            //THIS SETS TO SYSTEM'S LOOK AND FEEL
            UIManager.setLookAndFeel( UIManager.getSystemLookAndFeelClassName() );

            //THIS SETS TO OTHER JAVA LOOK AND FEEL
            //UIManager.setLookAndFeel("javax.swing.plaf.nimbus.NimbusLookAndFeel");
            //UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");

        } catch (ClassNotFoundException ex) {
                java.util.logging.Logger.getLogger(MyTableExample2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
        java.util.logging.Logger.getLogger(MyTableExample2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
        java.util.logging.Logger.getLogger(MyTableExample2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
        java.util.logging.Logger.getLogger(MyTableExample2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new MyTableExample2().setVisible(true);
            }
        });
    }
    // Variables declaration - do not modify
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTable jTable1;
}

class HeaderRenderer implements TableCellRenderer {
TableCellRenderer renderer;
    public HeaderRenderer(JTable jTable1) {
        renderer = jTable1.getTableHeader().getDefaultRenderer();
    }
    @Override
    public Component getTableCellRendererComponent(
        JTable table, Object value, boolean isSelected,
        boolean hasFocus, int row, int col) {
        return renderer.getTableCellRendererComponent(
            table, value, isSelected, hasFocus, row, col);
    }
}

2 个答案:

答案 0 :(得分：4)

使用此HeaderRenderer作为第一个行列渲染器可能会产生您想要的效果：

附录：我已经更新了示例，以便通过手动布局反映您的sscce。我的平台getSystemLookAndFeelClassName()是com.apple.laf.AquaLookAndFeel，所以我没有看到相同的结果。两个观察结果：您已经setAutoCreateRowSorter(false)以防止排序小部件激增，而Nimbus将其保留为交替突出显示。

enter image description here 

import java.awt.Component;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableCellRenderer;

public class MyTableExample3 extends JFrame {

    private JScrollPane scrollPane;
    private JTable table;

    public MyTableExample3() {
        initComponents();
    }

    @SuppressWarnings("unchecked")
    private void initComponents() {
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        table = new javax.swing.JTable() {

            @Override
            public Component prepareRenderer(
                TableCellRenderer renderer, int row, int col) {
                if (col == 0) {
                    return this.getTableHeader().getDefaultRenderer()
                        .getTableCellRendererComponent(this, this.getValueAt(
                            row, col), false, false, row, col);
                } else {
                    return super.prepareRenderer(renderer, row, col);
                }
            }
        };
        table.setAutoCreateRowSorter(false);
        final JTableHeader header = table.getTableHeader();
        header.setDefaultRenderer(new HeaderRenderer(table));

        table.setModel(new javax.swing.table.DefaultTableModel(
            new Object[][]{
                {"Row 1", "Data 2", "Data 3", "Data 4", "Data 5"},
                {"Row 2", "Data 6", "Data 7", "Data 8", "Data 9"},
                {"Row 3", "Data 10", "Data 11", "Data 12", "Data 13"}
            },
            new String[]{
                "", "Col 1", "Col 2", "Col 3", "Col 4"
            }));
        scrollPane = new JScrollPane(table);
        this.add(scrollPane);
        pack();
    }

    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {

            @Override
            public void run() {
                new MyTableExample3().setVisible(true);
            }
        });
    }

    private static class HeaderRenderer implements TableCellRenderer {

        TableCellRenderer renderer;

        public HeaderRenderer(JTable table) {
            renderer = table.getTableHeader().getDefaultRenderer();
        }

        @Override
        public Component getTableCellRendererComponent(
            JTable table, Object value, boolean isSelected,
            boolean hasFocus, int row, int col) {
            return renderer.getTableCellRendererComponent(
                table, value, isSelected, hasFocus, row, col);
        }
    }
}

答案 1 :(得分：3)

也许

enter image description here 

import java.awt.*;
import java.awt.event.ActionEvent;
import javax.swing.*;
import javax.swing.UIManager.*;
import javax.swing.event.*;
import javax.swing.table.*;

public class JTableRowHeader {

    private JFrame frame = new JFrame("JTable RowHeader");
    private JScrollPane scrollPane;
    private JTable table;
    private DefaultTableModel model;
    private TableRowSorter<TableModel> sorter;
    private JTable headerTable;

    public JTableRowHeader() {
        table = new JTable(4, 4);
        for (int i = 0; i < table.getRowCount(); i++) {
            table.setValueAt(i, i, 0);
        }
        sorter = new TableRowSorter<TableModel>(table.getModel());
        table.setRowSorter(sorter);
        model = new DefaultTableModel() {

            private static final long serialVersionUID = 1L;

            @Override
            public int getColumnCount() {
                return 1;
            }

            @Override
            public boolean isCellEditable(int row, int col) {
                return false;
            }

            @Override
            public int getRowCount() {
                return table.getRowCount();
            }

            @Override
            public Class<?> getColumnClass(int colNum) {
                switch (colNum) {
                    case 0:
                        return String.class;
                    default:
                        return super.getColumnClass(colNum);
                }
            }
        };
        headerTable = new JTable(model);
        for (int i = 0; i < table.getRowCount(); i++) {
            headerTable.setValueAt("Row " + (i + 1), i, 0);
        }
        headerTable.setShowGrid(false);
        headerTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
        headerTable.setPreferredScrollableViewportSize(new Dimension(50, 0));
        headerTable.getColumnModel().getColumn(0).setPreferredWidth(50);
        headerTable.getColumnModel().getColumn(0).setCellRenderer(new TableCellRenderer() {

            @Override
            public Component getTableCellRendererComponent(JTable x, Object value, boolean isSelected, boolean hasFocus, int row, int column) {

                boolean selected = table.getSelectionModel().isSelectedIndex(row);
                Component component = table.getTableHeader().getDefaultRenderer().getTableCellRendererComponent(table, value, false, false, -1, -2);
                ((JLabel) component).setHorizontalAlignment(SwingConstants.CENTER);
                if (selected) {
                    component.setFont(component.getFont().deriveFont(Font.BOLD));
                    component.setForeground(Color.red);
                } else {
                    component.setFont(component.getFont().deriveFont(Font.PLAIN));
                }
                return component;
            }
        });
        table.getRowSorter().addRowSorterListener(new RowSorterListener() {

            @Override
            public void sorterChanged(RowSorterEvent e) {
                model.fireTableDataChanged();
            }
        });
        table.getSelectionModel().addListSelectionListener(new ListSelectionListener() {

            @Override
            public void valueChanged(ListSelectionEvent e) {
                model.fireTableRowsUpdated(0, model.getRowCount() - 1);
            }
        });
        scrollPane = new JScrollPane(table);
        scrollPane.setRowHeaderView(headerTable);
        table.setPreferredScrollableViewportSize(table.getPreferredSize());
        frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        frame.add(scrollPane);
        frame.add(new JButton(new AbstractAction("Toggle filter") {

            private static final long serialVersionUID = 1L;
            private RowFilter<TableModel, Object> filter = new RowFilter<TableModel, Object>() {

                @Override
                public boolean include(javax.swing.RowFilter.Entry<? extends TableModel, ? extends Object> entry) {
                    return ((Number) entry.getValue(0)).intValue() % 2 == 0;
                }
            };

            @Override
            public void actionPerformed(ActionEvent e) {
                if (sorter.getRowFilter() != null) {
                    sorter.setRowFilter(null);
                } else {
                    sorter.setRowFilter(filter);
                }
            }
        }), BorderLayout.SOUTH);
        frame.pack();
        frame.setLocation(150, 150);
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        try {// UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
            for (LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) {
                if (info.getName().equals("Nimbus")) {
                    UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (Exception e) {
            //e.printStackTrace();
        }
        EventQueue.invokeLater(new Runnable() {

            @Override
            public void run() {
                JTableRowHeader TestTableRowHeader = new JTableRowHeader();
            }
        });
    }
}

这是系统外观和感觉 - enter image description here

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