Question

这是Java swing awt相关的问题。我正在使用JXTable（JTable的扩展）。该表有3个固定（始终显示）列。让我们打电话给他们＆＃34; OK-COLS＆＃34;因为它们是按要求显示的。 OK-COL的标题有两个组件= JLabel（表示列名）和JButton（用于排序该列）该表可以有一个或多个＆＃34; NOT-OK-COLS＆＃34;在运行时。 NOT-OK-COLS的标题包含3个组件： - JLabel（表示列名），组合框（用于过滤表）和排序按钮。

问题： - 如果单击NOT-OK-COL进行排序，然后调整列宽，则该列的标题不会立即调整为新的列宽。调整NOT-OK-COL的大小后，如果单击其他列标题，则NOT-OK-COL标题会根据列宽正确调整大小。

需要帮助才能找到问题发生的原因以及解决方法。该表使用自己的自定义渲染器。

附上一些截图供参考： -

1）当简单显示表格时，不会调整列的大小或排序： -

2）调整OK-COL的大小

3）当NOT-OK-COL调整大小时（不进行排序......左侧宽度的第1列增加）

4）当NOT-OK-COL被分类并调整大小时（LHS＆＃39;宽度的第一列减少）

从上一张图片可以看出，＆＃34;价值2＆＃34;列标题与第1列的标题重叠，它没有重新调整为实际的新宽度。

现在，如果我点击任何其他标题，第1列的标题将根据需要自动调整大小（类似于图像＃2）

以下是示例的类。

DemoClass.java（public static void main）

EditableHeaderRenderer.java

~~~~~~~~~~~~~~~~~~~~~

package com.tejpal.finalHeader.two;

import javax.swing.*;
import javax.swing.table.DefaultTableColumnModel;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableColumn;

import java.awt.*;

public class DemoClass extends JFrame {

    /**
     * Main class that will fire up the UI on the screen
     * 
     */
    private static final long serialVersionUID = 1L;

    public DemoClass() {
        super("Main Frame");

        JPanel cPane = (JPanel) getContentPane();
        cPane.setLayout(new BorderLayout());

        // List of values for the combo box
        String[] list = {"tejpal","singh","chouhanfromkhnadwa"};


        DefaultTableColumnModel tableModel = new DefaultTableColumnModel();


        TableColumn col = null; 

        JPanel firstpanel = new JPanel(new BorderLayout());
        /**
         * This subpanel holds the three components.
         * Label, combobox, Sort Button
         */ 
        JPanel subPanel = new JPanel(new BorderLayout());

        //Add Label to the header panel
            subPanel.add( new JLabel("Label"), BorderLayout.WEST);

            //Add combo box to the header panel
            subPanel.add( new JComboBox<String>(list));

            // Add sort button to the header panel
            JButton sortWidget = new JButton();



            sortWidget.setOpaque(false);
            sortWidget.setContentAreaFilled(false);
            sortWidget.setBorderPainted(false);
            sortWidget.setHorizontalAlignment(SwingConstants.LEFT);
            sortWidget.setIcon(UIManager.getIcon("Table.ascendingSortIcon") );
            subPanel.add( sortWidget,BorderLayout.EAST);
            //adding subpanel to firstPanel 
            firstpanel.add(subPanel);
            firstpanel.setSize(10, 100);
            firstpanel.setVisible(true);




          col = new TableColumn(0);
          col.setPreferredWidth( 100 );
          col.setMinWidth( 100 );   

          //EditableHeaderRenderer implements TableCellRenderer and rendered column as header of table with panel 
          col.setHeaderRenderer(new EditableHeaderRenderer(firstpanel));
          tableModel.addColumn(col);




          JPanel secondPanel = new JPanel(new BorderLayout());
       // second panel with label and button
          JPanel subPanelSecond = new JPanel(new BorderLayout());

            //Add Label to the header panel
          subPanelSecond.add( new JLabel("Label"));

            // Add sort button to the header panel
            JButton sortWidgetSecond = new JButton();
            sortWidgetSecond.setOpaque(false);
            sortWidgetSecond.setContentAreaFilled(false);
            sortWidgetSecond.setBorderPainted(false);
            sortWidgetSecond.setHorizontalAlignment(SwingConstants.LEFT); 
            subPanelSecond.add( sortWidgetSecond,BorderLayout.EAST);
            sortWidgetSecond.setIcon(UIManager.getIcon("Table.ascendingSortIcon") );
            // adding subPanelSecond on secondPanel
            secondPanel.add(subPanelSecond);
            secondPanel.setSize(10, 100);
            secondPanel.setVisible(true);

          col = new TableColumn(1);
          col.setPreferredWidth( 100 );
          col.setMinWidth( 100 );
        //EditableHeaderRenderer implements TableCellRenderer and rendered column as header of table with panel 
          col.setHeaderRenderer(new EditableHeaderRenderer(secondPanel));
          tableModel.addColumn(col);



          col = new TableColumn(2);
          col.setPreferredWidth( 100 );
          col.setMinWidth( 100 );
        //EditableHeaderRenderer implements TableCellRenderer and rendered column as header of table with panel 
          col.setHeaderRenderer(new EditableHeaderRenderer(secondPanel));
          tableModel.addColumn(col);



          col = new TableColumn(3);
          col.setPreferredWidth( 100 );
          col.setMinWidth( 100 );
        //EditableHeaderRenderer implements TableCellRenderer and rendered column as header of table with panel 
          col.setHeaderRenderer(new EditableHeaderRenderer(secondPanel));
          tableModel.addColumn(col);



        JTable table = new JTable(new DefaultTableModel(), tableModel);


        // code for insert row data in table
        DefaultTableModel model = new DefaultTableModel(); 
        for(int i=0;i<table.getColumnCount();i++){
            model.addColumn(table.getColumnModel().getColumn(i));
        }

        Object[] rowDate0 = new Object[]{new Integer(21), "b", "c","d"};
        Object[] rowDate1 = new Object[]{new Integer(11), "11","chouhan","khandwa"};
        Object[] rowDate2 = new Object[]{new Integer(27),"11","abc", "test"};
        Object[] rowDate3 = new Object[]{new Integer(2),"a", "b", "3"};

        model.addRow(rowDate0);
        model.addRow(rowDate1);
        model.addRow(rowDate2);
        model.addRow(rowDate3);

        table.setModel(model);
        table.setAutoCreateRowSorter(true);
        JScrollPane scrollPane = new JScrollPane(table);
        cPane.add(scrollPane, BorderLayout.PAGE_START);    
        setSize(800, 200);
        setResizable(true);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        setVisible(true);
    }

    public static void main(String... args) {
        // main class
        new DemoClass();
    }
}

~~~~~~~~~~~~~~~~~~~~~

package com.tejpal.finalHeader.two;

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Point;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTable;
import javax.swing.SwingConstants;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;



/**
 * EditableHeaderRenderer implements TableCellRenderer and rendered column as header of table with panel 
 * 
 */

class EditableHeaderRenderer extends JPanel implements TableCellRenderer {

    private static final long serialVersionUID = 1L;
    private static JTable table = null;
    private MouseEventReposter reporter = null;
    private JComponent editor;
    // passed jbomponent will be displayed on header of table
    EditableHeaderRenderer(JComponent editor) {
        this.editor = editor;
        this.editor.setBorder(UIManager.getBorder("TableHeader.cellBorder"));
    }
    @Override
    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int col) {
        if (table != null && EditableHeaderRenderer.table != table) {
            table.setAutoCreateRowSorter(false);
            EditableHeaderRenderer.table = table;
            final JTableHeader header = table.getTableHeader();   
            if (header != null) {   
                header.setSize(new Dimension(150,80));
                System.out.println(header.getDefaultRenderer()+ " :::::::: ");
                this.editor.setForeground(header.getForeground());   
                this.editor.setBackground(header.getBackground());   
                this.editor.setFont(header.getFont());
                // calling mouse event.         
                reporter = new MouseEventReposter(header, col, this.editor);
                header.addMouseListener(reporter);
            }
        }
        return this.editor;
    }

    /**
     * EditableHeaderRenderer extends MouseAdapter to perform any mouse action like click,pressed,release ....etc 
     * 
     */
    static public class MouseEventReposter extends MouseAdapter {

        private Component dispatchComponent;
        private JTableHeader header;
        private int column  = -1;
        private Component editor;

        public MouseEventReposter(JTableHeader header, int column, Component editor) {
            this.header = header;
            this.column = column;
            this.editor = editor;
        }

        public MouseEventReposter() {
            // TODO Auto-generated constructor stub
        }

        public void setColumn(int column) {
            this.column = column;
        }

        private void setDispatchComponent(MouseEvent e) {
            int col = header.getTable().columnAtPoint(e.getPoint());
            if (col != column || col == -1) return;

            Point p = e.getPoint();
            Point p2 = SwingUtilities.convertPoint(header, p, editor);
            dispatchComponent = SwingUtilities.getDeepestComponentAt(editor, p2.x, p2.y);
        }

        private boolean repostEvent(MouseEvent e) {
            if (dispatchComponent == null) {
                return false;
            }
            MouseEvent e2 = SwingUtilities.convertMouseEvent(header, e, dispatchComponent);
            dispatchComponent.dispatchEvent(e2);
            return true;
        }

        @Override
        public void mouseReleased(MouseEvent e) {
            dispatchComponent = null;
            header.remove(editor);
            repostEvent(e);

        }

        @Override
        public void mouseClicked(MouseEvent event) {

            String[] list = {"tejpal","singh","chouhan"};

             int col1 = table.columnAtPoint(event.getPoint());
                String name = table.getColumnName(col1);
                System.out.println("Column index selected " + col1 + " " + name);
                // on mouse click changing the image of button for sorting.selecting column index and changing sort image of particular column. 
            if(col1==0){
                  if (header.getResizingColumn() == null) {
                        Point p = event.getPoint();

                        int col = header.getTable().columnAtPoint(p);
                        if (col != column || col == -1) return;

                        int index = header.getColumnModel().getColumnIndexAtX(p.x);
                        if (index == -1) return;

                        editor.setBounds(header.getHeaderRect(index));
                        header.add(editor);
                        editor.validate();
                        setDispatchComponent(event);
                        repostEvent(event);
                    }
                TableColumn column = table.getColumnModel().getColumn(0);
                //JPanelMainClass m = new JPanelMainClass(list, 1+"");
                //EditableHeaderRenderer implements TableCellRenderer and rendered column as header of table with panel 
                JPanel firstpane = new JPanel(new BorderLayout());
                 JPanel subPanel = new JPanel(new BorderLayout());
                    //Add Label to the header panel
                    JLabel label  = new JLabel("Label");
                    subPanel.add(label, BorderLayout.WEST);

                    //Add combo box to the header panel
                    subPanel.add( new JComboBox<String>(list));

                    // Add sort button to the header panel
                    final JButton sortWidget = new JButton();



                    sortWidget.setOpaque(false);
                    sortWidget.setContentAreaFilled(false);
                    sortWidget.setBorderPainted(false);
                    sortWidget.setHorizontalAlignment(SwingConstants.LEFT);
                    sortWidget.setIcon(UIManager.getIcon("Table.ascendingSortIcon") );
                    subPanel.add( sortWidget,BorderLayout.EAST);
                    //adding a label,combobox and button on panel and button has image icon. that can be ascending or descending 
                    firstpane.add(subPanel);
                    firstpane.setSize(10, 100);
                    firstpane.setVisible(true);

                column.setHeaderRenderer(new EditableHeaderRenderer(firstpane));
                // table.setAutoCreateRowSorter(true);
            }
        }}

}

~~~~~~~~~~~~~~~~~~~~~

调整列大小时，Java Swing Table标头未正确显示

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