Java Utililty Methods JDialog

void adaptSize(JDialog frame, int preferredWidth, int preferredHeight)
Set the size of the dialog to the given size, or the size of the screen if it the screen is too small.

java.awt.Toolkit toolkit = frame.getToolkit();
Dimension sSize = toolkit.getScreenSize();
if (preferredWidth > 0 && preferredHeight > 0) {
 frame.setSize(Math.min(preferredWidth, sSize.width - 30), Math.min(preferredHeight, sSize.height - 30));
} else {
 frame.pack();
frame.setLocationRelativeTo(null);
...

void addFileOnAction(AbstractButton button, final JTextField textField, final JDialog parent)
Add an action listener which presents a common file dialog.

button.addActionListener(new ActionListener() {
 @Override
 public void actionPerformed(ActionEvent e) {
 JFileChooser chooser = new JFileChooser();
 File old = new File(textField.getText());
 chooser.setSelectedFile(old);
 FileNameExtensionFilter tiff = new FileNameExtensionFilter("TIFF (large images)", "tif", "tiff");
 FileNameExtensionFilter png = new FileNameExtensionFilter("PNG & JPG (regular images)", "png",
...

void alignDialogInMiddleOfScreen(JDialog dlg)
align Dialog In Middle Of Screen

Rectangle frameBounds = GraphicsEnvironment.getLocalGraphicsEnvironment().getMaximumWindowBounds();
int x = frameBounds.x + ((frameBounds.width - dlg.getSize().width) / 2);
int y = frameBounds.y + ((frameBounds.height - dlg.getSize().height) / 2);
dlg.setLocation(x, y);

void applyDefaultProperties(final JDialog comp)
Sets default background and foreground color as well as a default font for the specified component.

if (comp == null) {
 return;
applyProperties(comp, "control", 
 "controlText", 
 null); 

Point calculatePosition(Window parent, JDialog dialog)
calculate Position

int x = parent.getX() + (parent.getWidth() - dialog.getWidth()) / 2;
int y = parent.getY() + (parent.getHeight() - dialog.getHeight()) / 2;
Point p = new Point(x, y);
return p;

void cascadeDialog(JDialog dialog, JDialog parent)
cascade Dialog

Point p = parent.getLocationOnScreen();
p.x += 20;
p.y += 20;
dialog.setLocation(p);

File chooseFile(final JDialog dialog, final String title)
choose File

return chooseFile(dialog, title, null);

void closeDialog(final JDialog dialog)
Send a WindowEvent#WINDOW_CLOSING event to the given dialog.

final WindowEvent ev = new WindowEvent(dialog, WindowEvent.WINDOW_CLOSING);
dialog.dispatchEvent(ev);

File commonFileDialog(JDialog parent, boolean save)
common File Dialog

JFileChooser chooser = new JFileChooser();
if (commonFileDialogDir != null)
 chooser.setCurrentDirectory(commonFileDialogDir);
int returnVal;
if (save)
 returnVal = chooser.showSaveDialog(parent);
else
 returnVal = chooser.showOpenDialog(parent);
...

void configureCancelForDialog(final JDialog dialog, JButton cancelButton)
This method configures a standard Cancel action, bound to the ESC key, to dispose of the dialog, and sets the buttons action to be this action, and adds the action to the dialog's rootPane action map

String CANCEL_ACTION_KEY = "CANCEL_ACTION_KEY";
int noModifiers = 0;
KeyStroke escapeKey = KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, noModifiers, false);
InputMap inputMap = dialog.getRootPane().getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
inputMap.put(escapeKey, CANCEL_ACTION_KEY);
Action closeAction = new AbstractAction("Cancel") {
 public void actionPerformed(ActionEvent arg0) {
 dialog.dispose();
...