Fixed memory leak that was introduced with the VirtualStack workaround - its still a workaround so CTRLHA-109

src/main/java/ch/psi/imagej/hdf5/HDF5Reader.java

@@ -278,7 +278,7 @@ public class HDF5Reader implements PlugIn {
 						}
 					}
 
-					ImagePlus imp = new ImagePlus(filename + " " + datasetName, stack);
+					ImagePlus imp = new ImagePlusHDF5(filename + " " + datasetName, stack);
 					imp.resetDisplayRange();
 					imp.show();
 					

src/main/java/ch/psi/imagej/hdf5/ImagePlusHDF5.java

@@ -0,0 +1,64 @@
+package ch.psi.imagej.hdf5;
+
+import java.awt.event.WindowEvent;
+import java.awt.event.WindowListener;
+import java.util.logging.Logger;
+
+import ij.ImagePlus;
+import ij.ImageStack;
+
+public class ImagePlusHDF5 extends ImagePlus {
+	
+	
+	private static final Logger logger = Logger.getLogger(ImagePlusHDF5.class.getName());
+	
+	public ImagePlusHDF5(String title, ImageStack stack) {
+		super(title, stack);
+	}
+	
+	@Override
+	public void show() {
+		super.show();
+		getWindow().addWindowListener(new WindowListener() {
+			
+			@Override
+			public void windowOpened(WindowEvent e) {
+				logger.info("");
+			}
+			
+			@Override
+			public void windowIconified(WindowEvent e) {
+				logger.info("");
+			}
+			
+			@Override
+			public void windowDeiconified(WindowEvent e) {
+				logger.info("");
+			}
+			
+			@Override
+			public void windowDeactivated(WindowEvent e) {
+				logger.info("");
+			}
+			
+			@Override
+			public void windowClosing(WindowEvent e) {
+				logger.info("Closing");
+			}
+			
+			@Override
+			public void windowClosed(WindowEvent e) {
+				logger.info("Closed");
+				ImageStack stack = getStack();
+				if(stack instanceof VirtualStackHDF5){
+					((VirtualStackHDF5) stack).close();
+				}
+			}
+			
+			@Override
+			public void windowActivated(WindowEvent e) {
+				logger.info("");
+			}
+		});
+	}
+}

src/main/java/ch/psi/imagej/hdf5/VirtualStackHDF5.java

@@ -158,10 +158,10 @@ public class VirtualStackHDF5 extends ImageStack {
 		return bitDepth;
 	}
 	
-	@Override
-	protected void finalize() throws Throwable {
-		super.finalize();
-		
+	/**
+	 * Close HDF5 file
+	 */
+	public void close() {		
 		logger.info("Closing HDF5 file");
 		try{
 			file.close();