make - jtable component in java

Problema al cambiar el tamaño de las columnas en una doble JTable

Question

Estoy creando un componente personalizado que contiene 2 JTables, uno como la cuadrícula de datos principal y otro como la barra de resumen siempre visible y he encontrado esta solución, pero cambiar el tamaño de las columnas no funciona como debería, ninguna idea de qué he hecho mal ?

import java.awt.BorderLayout;  
import java.awt.Dimension;  
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.ListSelectionModel;  
import javax.swing.SwingUtilities;    
public class FixedRow2Tables extends JFrame    
{  
    private static final long serialVersionUID = 4676303089799270571L;  
    Object[][] data;  
    Object[] column;  
    JTable fixedTable, table;  

    public FixedRow2Tables()    
    {
        super("Fixed Row Example");  

        Object[][] mainData = new Object[][] { { "a", "", "", "", "", "" },  
                { "", "b", "", "", "", "" }, { "", "", "c", "", "", "" },  
                { "", "", "", "d", "", "" }, { "", "", "", "", "e", "" },  
                { "", "", "", "", "", "f" } };  
        Object[][] summaryData = { { "fixed1", "", "", "", "", "" },  
                { "fixed2", "", "", "", "", "" } };  
        column = new Object[] { "A", "B", "C", "D", "E", "F" };  

        table = new JTable(mainData, column);  
        table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
        table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

        fixedTable = new JTable(summaryData, column);
        fixedTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
        fixedTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        fixedTable.setTableHeader(null);
        fixedTable.setColumnModel(table.getColumnModel());

        JScrollPane scroll = new JScrollPane(table);
        scroll.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);

        scroll.setPreferredSize(new Dimension(400, 100));
        getContentPane().add(scroll, BorderLayout.CENTER);
        getContentPane().add(fixedTable, BorderLayout.SOUTH);
    }

    public static void main(String[] args)
    {
        SwingUtilities.invokeLater(new Runnable()
        {
            public void run()
            {
                FixedRow2Tables frame = new FixedRow2Tables();
                frame.addWindowListener(new WindowAdapter()
                {
                    public void windowClosing(WindowEvent e)
                    {
                        System.exit(0);
                    }
                });
                frame.pack();
                frame.setVisible(true);
            }
        });
    }
}

Answer 1

fixedTable.setColumnModel(table.getColumnModel());

El problema radica en esa línea. Si lo comenta, la Tabla se comporta normalmente. Si eso rompe tu código (como no sé exactamente qué quieres hacer) solo comenta.

Pero cuando agregaste tu comentario, quieres sincronizar las dos tablas. Encontré un hilo del foro que cubre exactamente ese problema:

http://forums.sun.com/thread.jspa?threadID=713021

¡Que te diviertas!

PD: solo en caso de que el hilo del foro desaparezca (simplemente copié el texto):

Primero engancha las mesas. Tuve que compartir ColumnModel, de lo contrario, no funcionó. Los paneles tienen un campo JTable y el conjunto y los métodos ColumnModel delegan en

JTable.
infoPanel.setColumnModel(overviewPanel.getColumnModel());
overviewPanel.getColumnModel().addColumnModelListener(infoPanel);    
infoPanel.getColumnModel().addColumnModelListener(overviewPanel);

Luego maneje ChangeEvent:

public void columnMarginChanged(ChangeEvent event) {
final TableColumnModel eventModel = (DefaultTableColumnModel)event.getSource();
final TableColumnModel thisModel = getTable().getColumnModel();
final int columnCount = eventModel.getColumnCount();


for (int i = 0; i < columnCount; i++) {
  thisModel.getColumn(i).setWidth(eventModel.getColumn(i).getWidth());
}
repaint();
}

Answer 2

Este código me lo arregló

Tenga en cuenta que columnModel NO se reutiliza entre las tablas. Por favor mira los comentarios en el código.

package snippet;

import java.awt.BorderLayout;
import java.awt.Dimension;
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.ListSelectionModel;
import javax.swing.SwingUtilities;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.TableColumnModelEvent;
import javax.swing.event.TableColumnModelListener;
import javax.swing.table.TableColumnModel;

public class FixedRow2Tables extends JFrame {
    private static final long serialVersionUID = 4676303089799270571L;
    Object[][] data;
    Object[] column;
    JTable footerTable, table;

    public FixedRow2Tables() {
        super("Fixed Row Example");

        Object[][] mainData = new Object[][] { { "a", "", "", "", "", "" },
                { "", "b", "", "", "", "" }, { "", "", "c", "", "", "" },
                { "", "", "", "d", "", "" }, { "", "", "", "", "e", "" },
                { "", "", "", "", "", "f" } };
        Object[][] summaryData = { { "fixed1", "", "", "", "", "" },
                { "fixed2", "", "", "", "", "" } };
        column = new Object[] { "A", "B", "C", "D", "E", "F" };

        table = new JTable(mainData, column);
        table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
        table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

        footerTable = new JTable(summaryData, column);
        footerTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
        footerTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        footerTable.setTableHeader(null);
        // footerTable.setColumnModel(table.getColumnModel());

        table.getColumnModel().addColumnModelListener(
                new TableColumnModelListener() {

                    @Override
                    public void columnSelectionChanged(ListSelectionEvent e) {
                    }

                    @Override
                    public void columnRemoved(TableColumnModelEvent e) {
                    }

                    @Override
                    public void columnMoved(TableColumnModelEvent e) {
                    }

                    @Override
                    public void columnMarginChanged(ChangeEvent e) {
                        final TableColumnModel tableColumnModel = table
                                .getColumnModel();
                        TableColumnModel footerColumnModel = footerTable
                                .getColumnModel();
                        for (int i = 0; i < tableColumnModel.getColumnCount(); i++) {
                            int w = tableColumnModel.getColumn(i).getWidth();
                            footerColumnModel.getColumn(i).setMinWidth(w);
                            footerColumnModel.getColumn(i).setMaxWidth(w);
                            // footerColumnModel.getColumn(i).setPreferredWidth(w);
                        }
                        footerTable.doLayout();
                        footerTable.repaint();
                        repaint();
                    }

                    @Override
                    public void columnAdded(TableColumnModelEvent e) {
                    }
                });

        JScrollPane scroll = new JScrollPane(table);
        scroll.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
        scroll.setPreferredSize(new Dimension(400, 100));
        getContentPane().add(scroll, BorderLayout.CENTER);
        getContentPane().add(footerTable, BorderLayout.SOUTH);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                FixedRow2Tables frame = new FixedRow2Tables();
                frame.addWindowListener(new WindowAdapter() {
                    @Override
                    public void windowClosing(WindowEvent e) {
                        System.exit(0);
                    }
                });
                frame.pack();
                frame.setVisible(true);
            }
        });
    }
}

Answer 3

import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.event.*;
import javax.swing.table.*;

class Application extends JFrame
{
    public Application()
    {
        this.setBounds(100,100,500,200);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        String data[][] = {{"a1","b1","c1"},{"a2","b2","c2"},{"a3","b3","c3"}};
        String columnNames[] = {"a","b","c"};

        JTable jtable = new JTable(new DefaultTableModel(data,columnNames));

        JScrollPane jscrollPane = new JScrollPane(jtable,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
        jscrollPane.setBorder(new CompoundBorder(new MatteBorder(0,0,1,0,Color.gray),new EmptyBorder(0,0,0,0)));

        this.add(jscrollPane,BorderLayout.CENTER);


        JTable jtable_footer = new JTable(new DefaultTableModel(3,columnNames.length),jtable.getColumnModel());

        SyncListener syncListener = new SyncListener(jtable,jtable_footer);

        this.add(jtable_footer,BorderLayout.SOUTH);
    }

    public static void main(String args[])
    {
        SwingUtilities.invokeLater(new Runnable()
        {
            public void run()
            {
                Application application = new Application();

                application.setVisible(true);
            }
        });
    }
}

class SyncListener implements TableColumnModelListener
{
    JTable jtable_data;
    JTable jtable_footer;

    public SyncListener(JTable main, JTable footer)
    {
        jtable_data = main;
        jtable_footer = footer;

        DefaultTableColumnModel dtcm = (DefaultTableColumnModel)jtable_data.getColumnModel();

        dtcm.removeColumnModelListener(dtcm.getColumnModelListeners()[1]);
        dtcm.addColumnModelListener(this);
    }

    public void columnMarginChanged(ChangeEvent changeEvent)
    {
        for (int column = 0; column < jtable_data.getColumnCount(); column++)
        {
            jtable_footer.getColumnModel().getColumn(column).setWidth(jtable_data.getColumnModel().getColumn(column).getWidth());
        }

        jtable_footer.repaint();
    }

    public void columnAdded(TableColumnModelEvent e){}
    public void columnMoved(TableColumnModelEvent e){}
    public void columnRemoved(TableColumnModelEvent e){}
    public void columnSelectionChanged(ListSelectionEvent e){}
}

Answer 4

Con algunos palying con el ejemplo anterior, agregué algunas cosas con la barra de desplazamiento horizontal y el orden de las columnas:

package test;

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.AdjustmentEvent;
import java.awt.event.AdjustmentListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.Enumeration;

import javax.swing.JFrame;
import javax.swing.JScrollBar;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.SwingUtilities;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.TableColumnModelEvent;
import javax.swing.event.TableColumnModelListener;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;

public class FixedRow2Tables extends JFrame
{

    class FixedFooterTable extends JTable {

        private TableColumnModelListener tableColumnModelListener;
        private JTable                   bindedTable;

        FixedFooterTable(Object[][] data, String[] columnNames) {
            super(data, columnNames);
            setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
            setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
            setCellSelectionEnabled(true);
        }

        public void bindTableModels(final JTable table) {
            this.bindedTable = table;

            if (tableColumnModelListener == null)
                tableColumnModelListener = new TableColumnModelListener() {

                @Override
                public void columnSelectionChanged(ListSelectionEvent e) {
                }

                @Override
                public void columnRemoved(TableColumnModelEvent e) {
                    if (e.getFromIndex() < getColumnCount()) {
                        TableColumn c = getColumnModel().getColumn(e.getFromIndex());
                        getColumnModel().removeColumn(c);
                    }
                }

                @Override
                public void columnMoved(TableColumnModelEvent e) {
                    if (e.getFromIndex() < getColumnCount() && e.getToIndex() < getColumnCount()) {
                        TableColumn c = getColumnModel().getColumn(e.getFromIndex());
                        getColumnModel().moveColumn(e.getFromIndex(), e.getToIndex());
                    }
                }

                @Override
                public void columnMarginChanged(ChangeEvent e) {
                    bindColumnWidths(table.getColumnModel());
                }

                @Override
                public void columnAdded(TableColumnModelEvent e) {
                }

            };

            table.getColumnModel().addColumnModelListener(tableColumnModelListener);

        }

        private void bindColumnWidths(final TableColumnModel columnModel) {
            TableColumnModel fixedColumnModel = getColumnModel();
            Enumeration<TableColumn> enumerator = columnModel.getColumns();

            while (enumerator.hasMoreElements()) {
                TableColumn c = enumerator.nextElement();
                if (c.getModelIndex() >= fixedColumnModel.getColumnCount())
                    break;
                TableColumn destColumn = fixedColumnModel.getColumn(c.getModelIndex());
                System.out.println("columnMarginChanged c" + c.getModelIndex() + " : " + c.getWidth() + " - " + destColumn.getWidth() + " : "
                        + (destColumn.getWidth() - c.getWidth()));
                destColumn.setPreferredWidth(c.getWidth());
                System.out.println("columnMarginChanged c" + c.getModelIndex() + " : " + c.getWidth() + " - " + destColumn.getWidth());
            }
            revalidate();
        }

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

        public void bindViews(final JScrollPane scrollPane, final JScrollPane fixedScrollPane) {
            final JScrollBar fixedHorScrollBar = fixedScrollPane.getHorizontalScrollBar();
            final JScrollBar horScrollBar = scrollPane.getHorizontalScrollBar();
            final JScrollBar verScrollBar = scrollPane.getVerticalScrollBar();

            fixedScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_NEVER);
            fixedScrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);

            horScrollBar.addAdjustmentListener(new AdjustmentListener() {

                @Override
                public void adjustmentValueChanged(AdjustmentEvent e) {
                    fixedHorScrollBar.setValue(e.getValue());
                }
            });

            verScrollBar.addAdjustmentListener(new AdjustmentListener() {

                @Override
                public void adjustmentValueChanged(AdjustmentEvent e) {
                    Dimension d = fixedScrollPane.getSize();
                    Dimension d1 = scrollPane.getSize();
                }
            });
        }

        public JTable getBindedTable() {
            return bindedTable;
        }
    }

    private static final long serialVersionUID = 4676303089799270571L;
    Object[][] data;
    String[]                  columnNames;
    FixedFooterTable          fixedTable;
    JTable                    table;

    public FixedRow2Tables()
    {
        super("Fixed Row Example");

        Object[][] mainData = new Object[][] { { "a", "", "", "", "", "" },
                { "", "b", "", "", "", "" }, { "", "", "c", "", "", "" },
                { "", "", "", "d", "", "" }, { "", "", "", "", "e", "" },
                { "", "", "", "", "", "f" },
                { "a", "b", "c", "d", "e", "f" },
                { "a", "b", "c", "d", "e", "f" },
                { "a", "b", "c", "d", "e", "f" },
                { "a", "b", "c", "d", "e", "f" },
                { "a", "b", "c", "d", "e", "f" } };
        Object[][] summaryData = { { "fixed1", "", "", "", "", "" },
                { "fixed2", "b", "c", "d", "e", "f" } };
        columnNames = new String[] { "Ala", "Bardzo", "Chciala", "Dostac", "Eskimoska", "Franciszki Genowefy Pigwy" };

        table = new JTable(mainData, columnNames);
        table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
        table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);


        fixedTable = new FixedFooterTable(summaryData, columnNames);
        fixedTable.setTableHeader(null);

        final JScrollPane scroll = new JScrollPane(table);
        final JScrollPane fixedscroll = new JScrollPane(fixedTable);

        Dimension preferredSize = fixedTable.getPreferredSize();
        fixedscroll.setPreferredSize(preferredSize);

        fixedTable.bindTableModels(table);
        fixedTable.bindViews(scroll, fixedscroll);

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

    public static void main(String[] args)
    {
        SwingUtilities.invokeLater(new Runnable()
        {
            @Override
            public void run()
            {
                FixedRow2Tables frame = new FixedRow2Tables();
                frame.addWindowListener(new WindowAdapter()
                {
                    @Override
                    public void windowClosing(WindowEvent e)
                    {
                        System.exit(0);
                    }
                });
                frame.pack();
                frame.setVisible(true);
            }
        });
    }
}

Answer 5

Mi solución para este problema (el código está en Kotlin):

class TableHack(model: TableModel) : JXTable(model) {

    override fun columnMarginChanged(e: ChangeEvent?) {
        repaint();
        return;
    }
}

Utilice esta tabla como la tabla "resumen" y configure ColumnModel desde la tabla principal.

La causa del problema parece ser resizeAndRepaint() que se llama desde la implementación predeterminada dentro de la tabla. Si lo reemplaza con un simple repaint() funciona como un amuleto.