Mega Code Archive
This program demonstrates the desktop app API
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/*
This program is a part of the companion code for Core Java 8th ed.
(http://horstmann.com/corejava)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import java.awt.Desktop;
import java.awt.EventQueue;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URLEncoder;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
/**
* This program demonstrates the desktop app API.
*
* @version 1.00 2007-09-22
* @author Cay Horstmann
*/
public class DesktopAppTest {
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
JFrame frame = new DesktopAppFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
});
}
}
class DesktopAppFrame extends JFrame {
public DesktopAppFrame() {
setLayout(new GridBagLayout());
final JFileChooser chooser = new JFileChooser();
JButton fileChooserButton = new JButton("...");
final JTextField fileField = new JTextField(20);
fileField.setEditable(false);
JButton openButton = new JButton("Open");
JButton editButton = new JButton("Edit");
JButton printButton = new JButton("Print");
final JTextField browseField = new JTextField();
JButton browseButton = new JButton("Browse");
final JTextField toField = new JTextField();
final JTextField subjectField = new JTextField();
JButton mailButton = new JButton("Mail");
openButton.setEnabled(false);
editButton.setEnabled(false);
printButton.setEnabled(false);
browseButton.setEnabled(false);
mailButton.setEnabled(false);
if (Desktop.isDesktopSupported()) {
Desktop desktop = Desktop.getDesktop();
if (desktop.isSupported(Desktop.Action.OPEN))
openButton.setEnabled(true);
if (desktop.isSupported(Desktop.Action.EDIT))
editButton.setEnabled(true);
if (desktop.isSupported(Desktop.Action.PRINT))
printButton.setEnabled(true);
if (desktop.isSupported(Desktop.Action.BROWSE))
browseButton.setEnabled(true);
if (desktop.isSupported(Desktop.Action.MAIL))
mailButton.setEnabled(true);
}
fileChooserButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (chooser.showOpenDialog(DesktopAppFrame.this) == JFileChooser.APPROVE_OPTION)
fileField.setText(chooser.getSelectedFile().getAbsolutePath());
}
});
openButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
Desktop.getDesktop().open(chooser.getSelectedFile());
} catch (IOException ex) {
ex.printStackTrace();
}
}
});
editButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
Desktop.getDesktop().edit(chooser.getSelectedFile());
} catch (IOException ex) {
ex.printStackTrace();
}
}
});
printButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
Desktop.getDesktop().print(chooser.getSelectedFile());
} catch (IOException ex) {
ex.printStackTrace();
}
}
});
browseButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
Desktop.getDesktop().browse(new URI(browseField.getText()));
} catch (URISyntaxException ex) {
ex.printStackTrace();
} catch (IOException ex) {
ex.printStackTrace();
}
}
});
mailButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
String subject = percentEncode(subjectField.getText());
URI uri = new URI("mailto:" + toField.getText() + "?subject=" + subject);
System.out.println(uri);
Desktop.getDesktop().mail(uri);
} catch (URISyntaxException ex) {
ex.printStackTrace();
} catch (IOException ex) {
ex.printStackTrace();
}
}
});
JPanel buttonPanel = new JPanel();
((FlowLayout) buttonPanel.getLayout()).setHgap(2);
buttonPanel.add(openButton);
buttonPanel.add(editButton);
buttonPanel.add(printButton);
add(fileChooserButton, new GBC(0, 0).setAnchor(GBC.EAST).setInsets(2));
add(fileField, new GBC(1, 0).setFill(GBC.HORIZONTAL));
add(buttonPanel, new GBC(2, 0).setAnchor(GBC.WEST).setInsets(0));
add(browseField, new GBC(1, 1).setFill(GBC.HORIZONTAL));
add(browseButton, new GBC(2, 1).setAnchor(GBC.WEST).setInsets(2));
add(new JLabel("To:"), new GBC(0, 2).setAnchor(GBC.EAST).setInsets(5, 2, 5, 2));
add(toField, new GBC(1, 2).setFill(GBC.HORIZONTAL));
add(mailButton, new GBC(2, 2).setAnchor(GBC.WEST).setInsets(2));
add(new JLabel("Subject:"), new GBC(0, 3).setAnchor(GBC.EAST).setInsets(5, 2, 5, 2));
add(subjectField, new GBC(1, 3).setFill(GBC.HORIZONTAL));
pack();
}
private static String percentEncode(String s) {
try {
return URLEncoder.encode(s, "UTF-8").replaceAll("[+]", "%20");
} catch (UnsupportedEncodingException ex) {
return null; // UTF-8 is always supported
}
}
}
/*
* This program is a part of the companion code for Core Java 8th ed.
* (http://horstmann.com/corejava)
*
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* GBC - A convenience class to tame the GridBagLayout
*
* Copyright (C) 2002 Cay S. Horstmann (http://horstmann.com)
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any later
* version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA
*/
/**
* This class simplifies the use of the GridBagConstraints class.
*/
class GBC extends GridBagConstraints {
/**
* Constructs a GBC with a given gridx and gridy position and all other grid
* bag constraint values set to the default.
*
* @param gridx
* the gridx position
* @param gridy
* the gridy position
*/
public GBC(int gridx, int gridy) {
this.gridx = gridx;
this.gridy = gridy;
}
/**
* Constructs a GBC with given gridx, gridy, gridwidth, gridheight and all
* other grid bag constraint values set to the default.
*
* @param gridx
* the gridx position
* @param gridy
* the gridy position
* @param gridwidth
* the cell span in x-direction
* @param gridheight
* the cell span in y-direction
*/
public GBC(int gridx, int gridy, int gridwidth, int gridheight) {
this.gridx = gridx;
this.gridy = gridy;
this.gridwidth = gridwidth;
this.gridheight = gridheight;
}
/**
* Sets the anchor.
*
* @param anchor
* the anchor value
* @return this object for further modification
*/
public GBC setAnchor(int anchor) {
this.anchor = anchor;
return this;
}
/**
* Sets the fill direction.
*
* @param fill
* the fill direction
* @return this object for further modification
*/
public GBC setFill(int fill) {
this.fill = fill;
return this;
}
/**
* Sets the cell weights.
*
* @param weightx
* the cell weight in x-direction
* @param weighty
* the cell weight in y-direction
* @return this object for further modification
*/
public GBC setWeight(double weightx, double weighty) {
this.weightx = weightx;
this.weighty = weighty;
return this;
}
/**
* Sets the insets of this cell.
*
* @param distance
* the spacing to use in all directions
* @return this object for further modification
*/
public GBC setInsets(int distance) {
this.insets = new Insets(distance, distance, distance, distance);
return this;
}
/**
* Sets the insets of this cell.
*
* @param top
* the spacing to use on top
* @param left
* the spacing to use to the left
* @param bottom
* the spacing to use on the bottom
* @param right
* the spacing to use to the right
* @return this object for further modification
*/
public GBC setInsets(int top, int left, int bottom, int right) {
this.insets = new Insets(top, left, bottom, right);
return this;
}
/**
* Sets the internal padding
*
* @param ipadx
* the internal padding in x-direction
* @param ipady
* the internal padding in y-direction
* @return this object for further modification
*/
public GBC setIpad(int ipadx, int ipady) {
this.ipadx = ipadx;
this.ipady = ipady;
return this;
}
}
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