Static utility to add onClose events when a JComponent is closed.

Author: tinevez

src/main/java/fiji/plugin/trackmate/gui/GuiUtils.java

@@ -32,12 +32,16 @@
 import java.awt.color.ColorSpace;
 import java.awt.event.FocusEvent;
 import java.awt.event.FocusListener;
+import java.awt.event.WindowAdapter;
 
+import javax.swing.JComponent;
 import javax.swing.JOptionPane;
 import javax.swing.JTextField;
 import javax.swing.SwingUtilities;
 import javax.swing.UIManager;
 import javax.swing.UnsupportedLookAndFeelException;
+import javax.swing.event.AncestorEvent;
+import javax.swing.event.AncestorListener;
 
 import ij.IJ;
 import ij.ImagePlus;
@@ -146,7 +150,7 @@ public static final float[] toCIELab( final Color color )
 		return fromCIEXYZ( xyz );
 	}
 
-	public static final Color invert(final Color color)
+	public static final Color invert( final Color color )
 	{
 		return new Color( 255 - color.getRed(),
 				255 - color.getGreen(),
@@ -242,4 +246,32 @@ public static void setSystemLookAndFeel()
 
 		}
 	}
+
+	public static void addOnClosingEvent( final JComponent component, final Runnable runnable )
+	{
+		component.addAncestorListener( new AncestorListener()
+		{
+
+			@Override
+			public void ancestorRemoved( final AncestorEvent event )
+			{}
+
+			@Override
+			public void ancestorMoved( final AncestorEvent event )
+			{}
+
+			@Override
+			public void ancestorAdded( final AncestorEvent event )
+			{
+				SwingUtilities.getWindowAncestor( component ).addWindowListener( new WindowAdapter()
+				{
+					@Override
+					public void windowClosing( final java.awt.event.WindowEvent e )
+					{
+						runnable.run();
+					};
+				} );
+			}
+		} );
+	}
 }