Install Renderer and editor to table

Description

Demo Code

import javax.swing.JComponent;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.AbstractCellEditor;
import javax.swing.table.TableCellEditor;
import javax.swing.JButton;
import javax.swing.JColorChooser;
import javax.swing.JDialog;
import javax.swing.JTable;
import java.awt.Color;
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.BorderFactory;
import javax.swing.JLabel;
import javax.swing.JTable;
import javax.swing.border.Border;
import javax.swing.table.TableCellRenderer;
import java.awt.Color;
import java.awt.Component;

class ColorRenderer extends JLabel implements TableCellRenderer {
    Border unselectedBorder = null;
    Border selectedBorder = null;
    boolean isBordered = true;

    public ColorRenderer(boolean isBordered) {
        this.isBordered = isBordered;
        setOpaque(true); //MUST do this for background to show up.
    }/*from w  w w.j a v a  2s.c o  m*/

    public Component getTableCellRendererComponent(JTable table,
            Object color, boolean isSelected, boolean hasFocus, int row,
            int column) {
        Color newColor = (Color) color;
        setBackground(newColor);
        if (isBordered) {
            if (isSelected) {
                if (selectedBorder == null) {
                    selectedBorder = BorderFactory.createMatteBorder(2, 5,
                            2, 5, table.getSelectionBackground());
                }
                setBorder(selectedBorder);
            } else {
                if (unselectedBorder == null) {
                    unselectedBorder = BorderFactory.createMatteBorder(2,
                            5, 2, 5, table.getBackground());
                }
                setBorder(unselectedBorder);
            }
        }

        setToolTipText("RGB value: " + newColor.getRed() + ", "
                + newColor.getGreen() + ", " + newColor.getBlue());
        return this;
    }
}

class ColorEditor extends AbstractCellEditor implements
        TableCellEditor, ActionListener {
    Color currentColor;
    JButton button;
    JColorChooser colorChooser;
    JDialog dialog;
    protected static final String EDIT = "edit";

    public ColorEditor() {
        //Set up the editor (from the table's point of view),
        //which is a button.
        //This button brings up the color chooser dialog,
        //which is the editor from the user's point of view.
        button = new JButton();
        button.setActionCommand(EDIT);
        button.addActionListener(this);
        button.setBorderPainted(false);

        //Set up the dialog that the button brings up.
        colorChooser = new JColorChooser();
        dialog = JColorChooser.createDialog(button, "Pick a Color", true, //modal
                colorChooser, this, //OK button handler
                null); //no CANCEL button handler
    }

    /**
     * Handles events from the editor button and from
     * the dialog's OK button.
     */
    public void actionPerformed(ActionEvent e) {
        if (EDIT.equals(e.getActionCommand())) {
            //The user has clicked the cell, so
            //bring up the dialog.
            button.setBackground(currentColor);
            colorChooser.setColor(currentColor);
            dialog.setVisible(true);

            //Make the renderer reappear.
            fireEditingStopped();

        } else { //User pressed dialog's "OK" button.
            currentColor = colorChooser.getColor();
        }
    }

    //Implement the one CellEditor method that AbstractCellEditor doesn't.
    public Object getCellEditorValue() {
        return currentColor;
    }

    //Implement the one method defined by TableCellEditor.
    public Component getTableCellEditorComponent(JTable table,
            Object value, boolean isSelected, int row, int column) {
        currentColor = (Color) value;
        return button;
    }
}
/**
 * This is like TableDemo, except that it substitutes a
 * Favorite Color column for the Last Name column and specifies
 * a custom cell renderer and editor for the color data.
 */
public class TableDialogEditDemo extends JPanel {
    private boolean DEBUG = false;

    public TableDialogEditDemo() {
        super(new GridLayout(1, 0));

        JTable table = new JTable(new MyTableModel());
        table.setPreferredScrollableViewportSize(new Dimension(500, 70));
        table.setFillsViewportHeight(true);

        //Create the scroll pane and add the table to it.
        JScrollPane scrollPane = new JScrollPane(table);

        //Set up renderer and editor for the Favorite Color column.
        table.setDefaultRenderer(Color.class, new ColorRenderer(true));
        table.setDefaultEditor(Color.class, new ColorEditor());

        //Add the scroll pane to this panel.
        add(scrollPane);
    }

    class MyTableModel extends AbstractTableModel {
        private String[] columnNames = { "First Name", "Favorite Color",
                "Sport", "# of Years", "Vegetarian" };
        private Object[][] data = {
                { "Mary", new Color(153, 0, 153), "Snowboarding",
                        new Integer(5), new Boolean(false) },
                { "Alison", new Color(51, 51, 153), "Rowing",
                        new Integer(3), new Boolean(true) },
                { "Kathy", new Color(51, 102, 51), "Knitting",
                        new Integer(2), new Boolean(false) },
                { "Sharon", Color.red, "Speed reading", new Integer(20),
                        new Boolean(true) },
                { "Philip", Color.pink, "Pool", new Integer(10),
                        new Boolean(false) } };

        public int getColumnCount() {
            return columnNames.length;
        }

        public int getRowCount() {
            return data.length;
        }

        public String getColumnName(int col) {
            return columnNames[col];
        }

        public Object getValueAt(int row, int col) {
            return data[row][col];
        }

        /*
         * JTable uses this method to determine the default renderer/
         * editor for each cell.  If we didn't implement this method,
         * then the last column would contain text ("true"/"false"),
         * rather than a check box.
         */
        public Class getColumnClass(int c) {
            return getValueAt(0, c).getClass();
        }

        public boolean isCellEditable(int row, int col) {
            //Note that the data/cell address is constant,
            //no matter where the cell appears onscreen.
            if (col < 1) {
                return false;
            } else {
                return true;
            }
        }

        public void setValueAt(Object value, int row, int col) {
            if (DEBUG) {
                System.out.println("Setting value at " + row + "," + col
                        + " to " + value + " (an instance of "
                        + value.getClass() + ")");
            }

            data[row][col] = value;
            fireTableCellUpdated(row, col);

            if (DEBUG) {
                System.out.println("New value of data:");
                printDebugData();
            }
        }

        private void printDebugData() {
            int numRows = getRowCount();
            int numCols = getColumnCount();

            for (int i = 0; i < numRows; i++) {
                System.out.print("    row " + i + ":");
                for (int j = 0; j < numCols; j++) {
                    System.out.print("  " + data[i][j]);
                }
                System.out.println();
            }
            System.out.println("--------------------------");
        }
    }

    /**
     * Create the GUI and show it.  For thread safety,
     * this method should be invoked from the
     * event-dispatching thread.
     */
    private static void createAndShowGUI() {
        //Create and set up the window.
        JFrame frame = new JFrame("TableDialogEditDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        //Create and set up the content pane.
        JComponent newContentPane = new TableDialogEditDemo();
        newContentPane.setOpaque(true); //content panes must be opaque
        frame.setContentPane(newContentPane);

        //Display the window.
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        //Schedule a job for the event-dispatching thread:
        //creating and showing this application's GUI.
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }
}

/*
 * Copyright (c) 1995, 2008, Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Oracle or the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
Install Renderer and editor to table - Java Swing

Description

Demo Code

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