import javax.swing.JOptionPane; import javax.swing.JDialog; import javax.swing.JButton; import javax.swing.JRadioButton; import javax.swing.ButtonGroup; import javax.swing.JLabel; import javax.swing.ImageIcon; import javax.swing.BoxLayout; import javax.swing.Box; import javax.swing.BorderFactory; import javax.swing.border.Border; import javax.swing.JTabbedPane; import javax.swing.JPanel; import javax.swing.JFrame; import java.beans.*; //Property change stuff import java.awt.*; import java.awt.event.*; /* * DialogDemo.java is a 1.4 application that requires these files: * CustomDialog.java * images/middle.gif */ public class DialogDemo extends JPanel { JLabel label; ImageIcon icon = createImageIcon("images/middle.gif"); JFrame frame; String simpleDialogDesc = "Some simple message dialogs"; String iconDesc = "A JOptionPane has its choice of icons"; String moreDialogDesc = "Some more dialogs"; CustomDialog customDialog; /** Creates the GUI shown inside the frame's content pane. */ public DialogDemo(JFrame frame) { super(new BorderLayout()); this.frame = frame; customDialog = new CustomDialog(frame, "geisel", this); customDialog.pack(); //Create the components. JPanel frequentPanel = createSimpleDialogBox(); JPanel featurePanel = createFeatureDialogBox(); JPanel iconPanel = createIconDialogBox(); label = new JLabel("Click the \"Show it!\" button" + " to bring up the selected dialog.", JLabel.CENTER); //Lay them out. Border padding = BorderFactory.createEmptyBorder(20,20,5,20); frequentPanel.setBorder(padding); featurePanel.setBorder(padding); iconPanel.setBorder(padding); JTabbedPane tabbedPane = new JTabbedPane(); tabbedPane.addTab("Simple Modal Dialogs", null, frequentPanel, simpleDialogDesc); //tooltip text tabbedPane.addTab("More Dialogs", null, featurePanel, moreDialogDesc); //tooltip text tabbedPane.addTab("Dialog Icons", null, iconPanel, iconDesc); //tooltip text add(tabbedPane, BorderLayout.CENTER); add(label, BorderLayout.PAGE_END); label.setBorder(BorderFactory.createEmptyBorder(10,10,10,10)); } /** Sets the text displayed at the bottom of the frame. */ void setLabel(String newText) { label.setText(newText); } /** Returns an ImageIcon, or null if the path was invalid. */ protected static ImageIcon createImageIcon(String path) { java.net.URL imgURL = DialogDemo.class.getResource(path); if (imgURL != null) { return new ImageIcon(imgURL); } else { System.err.println("Couldn't find file: " + path); return null; } } /** Creates the panel shown by the first tab. */ private JPanel createSimpleDialogBox() { final int numButtons = 4; JRadioButton[] radioButtons = new JRadioButton[numButtons]; final ButtonGroup group = new ButtonGroup(); JButton showItButton = null; final String defaultMessageCommand = "default"; final String yesNoCommand = "yesno"; final String yeahNahCommand = "yeahnah"; final String yncCommand = "ync"; radioButtons[0] = new JRadioButton("OK (in the L&F's words)"); radioButtons[0].setActionCommand(defaultMessageCommand); radioButtons[1] = new JRadioButton("Yes/No (in the L&F's words)"); radioButtons[1].setActionCommand(yesNoCommand); radioButtons[2] = new JRadioButton("Yes/No " + "(in the programmer's words)"); radioButtons[2].setActionCommand(yeahNahCommand); radioButtons[3] = new JRadioButton("Yes/No/Cancel " + "(in the programmer's words)"); radioButtons[3].setActionCommand(yncCommand); for (int i = 0; i < numButtons; i++) { group.add(radioButtons[i]); } radioButtons[0].setSelected(true); showItButton = new JButton("Show it!"); showItButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String command = group.getSelection().getActionCommand(); //ok dialog if (command == defaultMessageCommand) { JOptionPane.showMessageDialog(frame, "Eggs aren't supposed to be green."); //yes/no dialog } else if (command == yesNoCommand) { int n = JOptionPane.showConfirmDialog( frame, "Would you like green eggs and ham?", "An Inane Question", JOptionPane.YES_NO_OPTION); if (n == JOptionPane.YES_OPTION) { setLabel("Ewww!"); } else if (n == JOptionPane.NO_OPTION) { setLabel("Me neither!"); } else { setLabel("Come on -- tell me!"); } //yes/no (not in those words) } else if (command == yeahNahCommand) { Object[] options = {"Yes, please", "No way!"}; int n = JOptionPane.showOptionDialog(frame, "Would you like green eggs and ham?", "A Silly Question", JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE, null, options, options[0]); if (n == JOptionPane.YES_OPTION) { setLabel("You're kidding!"); } else if (n == JOptionPane.NO_OPTION) { setLabel("I don't like them, either."); } else { setLabel("Come on -- 'fess up!"); } //yes/no/cancel (not in those words) } else if (command == yncCommand) { Object[] options = {"Yes, please", "No, thanks", "No eggs, no ham!"}; int n = JOptionPane.showOptionDialog(frame, "Would you like some green eggs to go " + "with that ham?", "A Silly Question", JOptionPane.YES_NO_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE, null, options, options[2]); if (n == JOptionPane.YES_OPTION) { setLabel("Here you go: green eggs and ham!"); } else if (n == JOptionPane.NO_OPTION) { setLabel("OK, just the ham, then."); } else if (n == JOptionPane.CANCEL_OPTION) { setLabel("Well, I'm certainly not going to eat them!"); } else { setLabel("Please tell me what you want!"); } } return; } }); return createPane(simpleDialogDesc + ":", radioButtons, showItButton); } /** * Used by createSimpleDialogBox and createFeatureDialogBox * to create a pane containing a description, a single column * of radio buttons, and the Show it! button. */ private JPanel createPane(String description, JRadioButton[] radioButtons, JButton showButton) { int numChoices = radioButtons.length; JPanel box = new JPanel(); JLabel label = new JLabel(description); box.setLayout(new BoxLayout(box, BoxLayout.PAGE_AXIS)); box.add(label); for (int i = 0; i < numChoices; i++) { box.add(radioButtons[i]); } JPanel pane = new JPanel(new BorderLayout()); pane.add(box, BorderLayout.PAGE_START); pane.add(showButton, BorderLayout.PAGE_END); return pane; } /** * Like createPane, but creates a pane with 2 columns of radio * buttons. The number of buttons passed in *must* be even. */ private JPanel create2ColPane(String description, JRadioButton[] radioButtons, JButton showButton) { JLabel label = new JLabel(description); int numPerColumn = radioButtons.length/2; JPanel grid = new JPanel(new GridLayout(0, 2)); for (int i = 0; i < numPerColumn; i++) { grid.add(radioButtons[i]); grid.add(radioButtons[i + numPerColumn]); } JPanel box = new JPanel(); box.setLayout(new BoxLayout(box, BoxLayout.PAGE_AXIS)); box.add(label); grid.setAlignmentX(0.0f); box.add(grid); JPanel pane = new JPanel(new BorderLayout()); pane.add(box, BorderLayout.PAGE_START); pane.add(showButton, BorderLayout.PAGE_END); return pane; } /* * Creates the panel shown by the 3rd tab. * These dialogs are implemented using showMessageDialog, but * you can specify the icon (using similar code) for any other * kind of dialog, as well. */ private JPanel createIconDialogBox() { JButton showItButton = null; final int numButtons = 6; JRadioButton[] radioButtons = new JRadioButton[numButtons]; final ButtonGroup group = new ButtonGroup(); final String plainCommand = "plain"; final String infoCommand = "info"; final String questionCommand = "question"; final String errorCommand = "error"; final String warningCommand = "warning"; final String customCommand = "custom"; radioButtons[0] = new JRadioButton("Plain (no icon)"); radioButtons[0].setActionCommand(plainCommand); radioButtons[1] = new JRadioButton("Information icon"); radioButtons[1].setActionCommand(infoCommand); radioButtons[2] = new JRadioButton("Question icon"); radioButtons[2].setActionCommand(questionCommand); radioButtons[3] = new JRadioButton("Error icon"); radioButtons[3].setActionCommand(errorCommand); radioButtons[4] = new JRadioButton("Warning icon"); radioButtons[4].setActionCommand(warningCommand); radioButtons[5] = new JRadioButton("Custom icon"); radioButtons[5].setActionCommand(customCommand); for (int i = 0; i < numButtons; i++) { group.add(radioButtons[i]); } radioButtons[0].setSelected(true); showItButton = new JButton("Show it!"); showItButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String command = group.getSelection().getActionCommand(); //no icon if (command == plainCommand) { JOptionPane.showMessageDialog(frame, "Eggs aren't supposed to be green.", "A plain message", JOptionPane.PLAIN_MESSAGE); //information icon } else if (command == infoCommand) { JOptionPane.showMessageDialog(frame, "Eggs aren't supposed to be green.", "Inane informational dialog", JOptionPane.INFORMATION_MESSAGE); //XXX: It doesn't make sense to make a question with //XXX: only one button. //XXX: See "Yes/No (but not in those words)" for a better solution. //question icon } else if (command == questionCommand) { JOptionPane.showMessageDialog(frame, "You shouldn't use a message dialog " + "(like this)\n" + "for a question, OK?", "Inane question", JOptionPane.QUESTION_MESSAGE); //error icon } else if (command == errorCommand) { JOptionPane.showMessageDialog(frame, "Eggs aren't supposed to be green.", "Inane error", JOptionPane.ERROR_MESSAGE); //warning icon } else if (command == warningCommand) { JOptionPane.showMessageDialog(frame, "Eggs aren't supposed to be green.", "Inane warning", JOptionPane.WARNING_MESSAGE); //custom icon } else if (command == customCommand) { JOptionPane.showMessageDialog(frame, "Eggs aren't supposed to be green.", "Inane custom dialog", JOptionPane.INFORMATION_MESSAGE, icon); } } }); return create2ColPane(iconDesc + ":", radioButtons, showItButton); } /** Creates the panel shown by the second tab. */ private JPanel createFeatureDialogBox() { final int numButtons = 5; JRadioButton[] radioButtons = new JRadioButton[numButtons]; final ButtonGroup group = new ButtonGroup(); JButton showItButton = null; final String pickOneCommand = "pickone"; final String textEnteredCommand = "textfield"; final String nonAutoCommand = "nonautooption"; final String customOptionCommand = "customoption"; final String nonModalCommand = "nonmodal"; radioButtons[0] = new JRadioButton("Pick one of several choices"); radioButtons[0].setActionCommand(pickOneCommand); radioButtons[1] = new JRadioButton("Enter some text"); radioButtons[1].setActionCommand(textEnteredCommand); radioButtons[2] = new JRadioButton("Non-auto-closing dialog"); radioButtons[2].setActionCommand(nonAutoCommand); radioButtons[3] = new JRadioButton("Input-validating dialog " + "(with custom message area)"); radioButtons[3].setActionCommand(customOptionCommand); radioButtons[4] = new JRadioButton("Non-modal dialog"); radioButtons[4].setActionCommand(nonModalCommand); for (int i = 0; i < numButtons; i++) { group.add(radioButtons[i]); } radioButtons[0].setSelected(true); showItButton = new JButton("Show it!"); showItButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String command = group.getSelection().getActionCommand(); //pick one of many if (command == pickOneCommand) { Object[] possibilities = {"ham", "spam", "yam"}; String s = (String)JOptionPane.showInputDialog( frame, "Complete the sentence:\n" + "\"Green eggs and...\"", "Customized Dialog", JOptionPane.PLAIN_MESSAGE, icon, possibilities, "ham"); //If a string was returned, say so. if ((s != null) && (s.length() > 0)) { setLabel("Green eggs and... " + s + "!"); return; } //If you're here, the return value was null/empty. setLabel("Come on, finish the sentence!"); //text input } else if (command == textEnteredCommand) { String s = (String)JOptionPane.showInputDialog( frame, "Complete the sentence:\n" + "\"Green eggs and...\"", "Customized Dialog", JOptionPane.PLAIN_MESSAGE, icon, null, "ham"); //If a string was returned, say so. if ((s != null) && (s.length() > 0)) { setLabel("Green eggs and... " + s + "!"); return; } //If you're here, the return value was null/empty. setLabel("Come on, finish the sentence!"); //non-auto-closing dialog } else if (command == nonAutoCommand) { final JOptionPane optionPane = new JOptionPane( "The only way to close this dialog is by\n" + "pressing one of the following buttons.\n" + "Do you understand?", JOptionPane.QUESTION_MESSAGE, JOptionPane.YES_NO_OPTION); //HACK used to get a close button. This dialog //illustrates the questionable practice of not //letting someone close the window using the //window decoration. Since the Java Look and Feel //doesn't decorate its dialogs with a close button, //we must turn on system window decorations in hopes //of getting a close button. JDialog.setDefaultLookAndFeelDecorated(false); //You can't use pane.createDialog() because that //method sets up the JDialog with a property change //listener that automatically closes the window //when a button is clicked. final JDialog dialog = new JDialog(frame, "Click a button", true); dialog.setContentPane(optionPane); dialog.setDefaultCloseOperation( JDialog.DO_NOTHING_ON_CLOSE); dialog.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent we) { setLabel("Thwarted user attempt to close window."); } }); //Undo the hack! JDialog.setDefaultLookAndFeelDecorated(true); optionPane.addPropertyChangeListener( new PropertyChangeListener() { public void propertyChange(PropertyChangeEvent e) { String prop = e.getPropertyName(); if (dialog.isVisible() && (e.getSource() == optionPane) && (JOptionPane.VALUE_PROPERTY.equals(prop))) { //If you were going to check something //before closing the window, you'd do //it here. dialog.setVisible(false); } } }); dialog.pack(); dialog.setLocationRelativeTo(frame); dialog.setVisible(true); int value = ((Integer)optionPane.getValue()).intValue(); if (value == JOptionPane.YES_OPTION) { setLabel("Good."); } else if (value == JOptionPane.NO_OPTION) { setLabel("Try using the window decorations " + "to close the non-auto-closing dialog. " + "You can't!"); } else { setLabel("Window unavoidably closed (ESC?)."); } //non-auto-closing dialog with custom message area //NOTE: if you don't intend to check the input, //then just use showInputDialog instead. } else if (command == customOptionCommand) { customDialog.setLocationRelativeTo(frame); customDialog.setVisible(true); String s = customDialog.getValidatedText(); if (s != null) { //The text is valid. setLabel("Congratulations! " + "You entered \"" + s + "\"."); } //non-modal dialog } else if (command == nonModalCommand) { //Create the dialog. final JDialog dialog = new JDialog(frame, "A Non-Modal Dialog"); //Add contents to it. It must have a close button, //since some L&Fs (notably Java/Metal) don't provide one //in the window decorations for dialogs. JLabel label = new JLabel("

" + "This is a non-modal dialog.
" + "You can have one or more of these up
" + "and still use the main window."); label.setHorizontalAlignment(JLabel.CENTER); Font font = label.getFont(); label.setFont(label.getFont().deriveFont(font.PLAIN, 14.0f)); JButton closeButton = new JButton("Close"); closeButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { dialog.setVisible(false); dialog.dispose(); } }); JPanel closePanel = new JPanel(); closePanel.setLayout(new BoxLayout(closePanel, BoxLayout.LINE_AXIS)); closePanel.add(Box.createHorizontalGlue()); closePanel.add(closeButton); closePanel.setBorder(BorderFactory. createEmptyBorder(0,0,5,5)); JPanel contentPane = new JPanel(new BorderLayout()); contentPane.add(label, BorderLayout.CENTER); contentPane.add(closePanel, BorderLayout.PAGE_END); contentPane.setOpaque(true); dialog.setContentPane(contentPane); //Show it. dialog.setSize(new Dimension(300, 150)); dialog.setLocationRelativeTo(frame); dialog.setVisible(true); } } }); return createPane(moreDialogDesc + ":", radioButtons, showItButton); } /** * Create the GUI and show it. For thread safety, * this method should be invoked from the * event-dispatching thread. */ private static void createAndShowGUI() { //Make sure we have nice window decorations. JFrame.setDefaultLookAndFeelDecorated(true); //Create and set up the window. JFrame frame = new JFrame("DialogDemo"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //Create and set up the content pane. DialogDemo newContentPane = new DialogDemo(frame); 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(); } }); } }