Java tutorial
/* * 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. */ package components; /* * TableFilterDemo.java requires SpringUtilities.java */ import javax.swing.*; import javax.swing.event.*; import javax.swing.table.AbstractTableModel; import javax.swing.table.TableRowSorter; import java.awt.Dimension; import java.awt.Component; public class TableFilterDemo extends JPanel { private boolean DEBUG = false; private JTable table; private JTextField filterText; private JTextField statusText; private TableRowSorter<MyTableModel> sorter; public TableFilterDemo() { super(); setLayout(new BoxLayout(this, BoxLayout.Y_AXIS)); //Create a table with a sorter. MyTableModel model = new MyTableModel(); sorter = new TableRowSorter<MyTableModel>(model); table = new JTable(model); table.setRowSorter(sorter); table.setPreferredScrollableViewportSize(new Dimension(500, 70)); table.setFillsViewportHeight(true); //For the purposes of this example, better to have a single //selection. table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); //When selection changes, provide user with row numbers for //both view and model. table.getSelectionModel().addListSelectionListener(new ListSelectionListener() { public void valueChanged(ListSelectionEvent event) { int viewRow = table.getSelectedRow(); if (viewRow < 0) { //Selection got filtered away. statusText.setText(""); } else { int modelRow = table.convertRowIndexToModel(viewRow); statusText.setText(String.format("Selected Row in view: %d. " + "Selected Row in model: %d.", viewRow, modelRow)); } } }); //Create the scroll pane and add the table to it. JScrollPane scrollPane = new JScrollPane(table); //Add the scroll pane to this panel. add(scrollPane); //Create a separate form for filterText and statusText JPanel form = new JPanel(new SpringLayout()); JLabel l1 = new JLabel("Filter Text:", SwingConstants.TRAILING); form.add(l1); filterText = new JTextField(); //Whenever filterText changes, invoke newFilter. filterText.getDocument().addDocumentListener(new DocumentListener() { public void changedUpdate(DocumentEvent e) { newFilter(); } public void insertUpdate(DocumentEvent e) { newFilter(); } public void removeUpdate(DocumentEvent e) { newFilter(); } }); l1.setLabelFor(filterText); form.add(filterText); JLabel l2 = new JLabel("Status:", SwingConstants.TRAILING); form.add(l2); statusText = new JTextField(); l2.setLabelFor(statusText); form.add(statusText); SpringUtilities.makeCompactGrid(form, 2, 2, 6, 6, 6, 6); add(form); } /** * Update the row filter regular expression from the expression in * the text box. */ private void newFilter() { RowFilter<MyTableModel, Object> rf = null; //If current expression doesn't parse, don't update. try { rf = RowFilter.regexFilter(filterText.getText(), 0); } catch (java.util.regex.PatternSyntaxException e) { return; } sorter.setRowFilter(rf); } class MyTableModel extends AbstractTableModel { private String[] columnNames = { "First Name", "Last Name", "Sport", "# of Years", "Vegetarian" }; private Object[][] data = { { "Kathy", "Smith", "Snowboarding", new Integer(5), new Boolean(false) }, { "John", "Doe", "Rowing", new Integer(3), new Boolean(true) }, { "Sue", "Black", "Knitting", new Integer(2), new Boolean(false) }, { "Jane", "White", "Speed reading", new Integer(20), new Boolean(true) }, { "Joe", "Brown", "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(); } /* * Don't need to implement this method unless your table's * editable. */ public boolean isCellEditable(int row, int col) { //Note that the data/cell address is constant, //no matter where the cell appears onscreen. if (col < 2) { return false; } else { return true; } } /* * Don't need to implement this method unless your table's * data can change. */ 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("TableFilterDemo"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //Create and set up the content pane. TableFilterDemo newContentPane = new TableFilterDemo(); 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(); } }); } }