Share Model between JList and JComboBox - Java Swing

Java examples for Swing:JList

Description

Share Model between JList and JComboBox

Demo Code

import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;

import java.util.*;
import java.awt.*;
import java.awt.event.*;

public class SharedModelDemo extends JPanel {
    JTextArea output;/*from w w  w.  j  av  a2s . c  o  m*/
    JList list;
    JTable table;
    String newline = "\n";
    ListSelectionModel listSelectionModel;

    public SharedModelDemo() {
        super(new BorderLayout());

        Vector data = new Vector(7);
        String[] columnNames = { "French", "Spanish", "Italian" };
        String[] oneData = { "un", "uno", "uno" };
        String[] twoData = { "deux", "dos", "due" };
        String[] threeData = { "trois", "tres", "tre" };
        String[] fourData = { "quatre", "cuatro", "quattro" };
        String[] fiveData = { "cinq", "cinco", "cinque" };
        String[] sixData = { "six", "seis", "sei" };
        String[] sevenData = { "sept", "siete", "sette" };

        //Build the model.
        SharedDataModel dataModel = new SharedDataModel(columnNames);
        dataModel.addElement(oneData);
        dataModel.addElement(twoData);
        dataModel.addElement(threeData);
        dataModel.addElement(fourData);
        dataModel.addElement(fiveData);
        dataModel.addElement(sixData);
        dataModel.addElement(sevenData);

        list = new JList(dataModel);
        list.setCellRenderer(new DefaultListCellRenderer() {
            public Component getListCellRendererComponent(JList l,
                    Object value, int i, boolean s, boolean f) {
                String[] array = (String[]) value;
                return super.getListCellRendererComponent(l, array[0], i,
                        s, f);
            }
        });

        listSelectionModel = list.getSelectionModel();
        listSelectionModel
                .addListSelectionListener(new SharedListSelectionHandler());
        JScrollPane listPane = new JScrollPane(list);

        table = new JTable(dataModel);
        table.setSelectionModel(listSelectionModel);
        JScrollPane tablePane = new JScrollPane(table);

        //Build control area (use default FlowLayout).
        JPanel controlPane = new JPanel();
        String[] modes = { "SINGLE_SELECTION", "SINGLE_INTERVAL_SELECTION",
                "MULTIPLE_INTERVAL_SELECTION" };

        final JComboBox comboBox = new JComboBox(modes);
        comboBox.setSelectedIndex(2);
        comboBox.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                String newMode = (String) comboBox.getSelectedItem();
                if (newMode.equals("SINGLE_SELECTION")) {
                    listSelectionModel
                            .setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
                } else if (newMode.equals("SINGLE_INTERVAL_SELECTION")) {
                    listSelectionModel
                            .setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
                } else {
                    listSelectionModel
                            .setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
                }
                output.append("----------" + "Mode: " + newMode
                        + "----------" + newline);
            }
        });
        controlPane.add(new JLabel("Selection mode:"));
        controlPane.add(comboBox);

        //Build output area.
        output = new JTextArea(10, 40);
        output.setEditable(false);
        JScrollPane outputPane = new JScrollPane(output,
                ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS,
                ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);

        //Do the layout.
        JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
        add(splitPane, BorderLayout.CENTER);

        JPanel topHalf = new JPanel();
        topHalf.setLayout(new BoxLayout(topHalf, BoxLayout.X_AXIS));
        JPanel listContainer = new JPanel(new GridLayout(1, 1));
        listContainer.setBorder(BorderFactory.createTitledBorder("List"));
        listContainer.add(listPane);
        JPanel tableContainer = new JPanel(new GridLayout(1, 1));
        tableContainer.setBorder(BorderFactory.createTitledBorder("Table"));
        tableContainer.add(tablePane);
        tablePane.setPreferredSize(new Dimension(300, 100));
        topHalf.setBorder(BorderFactory.createEmptyBorder(5, 5, 0, 5));
        topHalf.add(listContainer);
        topHalf.add(tableContainer);

        topHalf.setMinimumSize(new Dimension(400, 50));
        topHalf.setPreferredSize(new Dimension(400, 110));
        splitPane.add(topHalf);

        JPanel bottomHalf = new JPanel(new BorderLayout());
        bottomHalf.add(controlPane, BorderLayout.NORTH);
        bottomHalf.add(outputPane, BorderLayout.CENTER);
        //XXX: next line needed if bottomHalf is a scroll pane:
        //bottomHalf.setMinimumSize(new Dimension(400, 50));
        bottomHalf.setPreferredSize(new Dimension(450, 135));
        splitPane.add(bottomHalf);
    }

    /**
     * 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("SharedModelDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        //Create and set up the content pane.
        JComponent newContentPane = new SharedModelDemo();
        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();
            }
        });
    }

    class SharedListSelectionHandler implements ListSelectionListener {
        public void valueChanged(ListSelectionEvent e) {
            ListSelectionModel lsm = (ListSelectionModel) e.getSource();

            int firstIndex = e.getFirstIndex();
            int lastIndex = e.getLastIndex();
            boolean isAdjusting = e.getValueIsAdjusting();
            output.append("Event for indexes " + firstIndex + " - "
                    + lastIndex + "; isAdjusting is " + isAdjusting
                    + "; selected indexes:");

            if (lsm.isSelectionEmpty()) {
                output.append(" <none>");
            } else {
                // Find out which indexes are selected.
                int minIndex = lsm.getMinSelectionIndex();
                int maxIndex = lsm.getMaxSelectionIndex();
                for (int i = minIndex; i <= maxIndex; i++) {
                    if (lsm.isSelectedIndex(i)) {
                        output.append(" " + i);
                    }
                }
            }
            output.append(newline);
        }
    }

    class SharedDataModel extends DefaultListModel implements TableModel {
        public String[] columnNames;

        public SharedDataModel(String[] columnNames) {
            super();
            this.columnNames = columnNames;
        }

        public void rowChanged(int row) {
            fireContentsChanged(this, row, row);
        }

        private TableModel tableModel = new AbstractTableModel() {
            public String getColumnName(int column) {
                return columnNames[column];
            }

            public int getRowCount() {
                return size();
            }

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

            public Object getValueAt(int row, int column) {
                String[] rowData = (String[]) elementAt(row);
                return rowData[column];
            }

            public boolean isCellEditable(int row, int column) {
                return true;
            }

            public void setValueAt(Object value, int row, int column) {
                String newValue = (String) value;
                String[] rowData = (String[]) elementAt(row);
                rowData[column] = newValue;
                fireTableCellUpdated(row, column); //table event
                rowChanged(row); //list event
            }
        };

        //Implement the TableModel interface.
        public int getRowCount() {
            return tableModel.getRowCount();
        }

        public int getColumnCount() {
            return tableModel.getColumnCount();
        }

        public String getColumnName(int columnIndex) {
            return tableModel.getColumnName(columnIndex);
        }

        public Class getColumnClass(int columnIndex) {
            return tableModel.getColumnClass(columnIndex);
        }

        public boolean isCellEditable(int rowIndex, int columnIndex) {
            return tableModel.isCellEditable(rowIndex, columnIndex);
        }

        public Object getValueAt(int rowIndex, int columnIndex) {
            return tableModel.getValueAt(rowIndex, columnIndex);
        }

        public void setValueAt(Object aValue, int rowIndex, int columnIndex) {
            tableModel.setValueAt(aValue, rowIndex, columnIndex);
        }

        public void addTableModelListener(TableModelListener l) {
            tableModel.addTableModelListener(l);
        }

        public void removeTableModelListener(TableModelListener l) {
            tableModel.removeTableModelListener(l);
        }
    }
}

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