/*******************************************************************************
* Copyright (c) 2012 Google, Inc.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Google, Inc. - initial API and implementation
*******************************************************************************/
package swing.samples;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.ButtonGroup;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JTabbedPane;
import javax.swing.border.Border;
/*
* 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("<html><p align=center>"
+ "This is a non-modal dialog.<br>"
+ "You can have one or more of these up<br>"
+ "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();
}
});
}
}