Add "Enable QCMP?" dialog when double clicking dataset.

This QCMP options should be eventually moved to the dataset list. This
is kinda annoying dialog and won't be left very long.

src/main/java/bdv/ij/BigDataBrowserPlugIn.java

@@ -18,13 +18,7 @@ import java.util.HashMap;
 import java.util.Map;
 
 import javax.imageio.ImageIO;
-import javax.swing.DefaultListCellRenderer;
-import javax.swing.ImageIcon;
-import javax.swing.JFrame;
-import javax.swing.JLabel;
-import javax.swing.JList;
-import javax.swing.JOptionPane;
-import javax.swing.JScrollPane;
+import javax.swing.*;
 
 import org.apache.commons.lang.StringUtils;
 import org.scijava.command.Command;
@@ -146,22 +140,26 @@ public class BigDataBrowserPlugIn implements Command
 		list.addMouseListener( new MouseAdapter()
 		{
 			@Override
-			public void mouseClicked( final MouseEvent evt )
-			{
+			public void mouseClicked(final MouseEvent evt) {
 				final JList<?> list = (JList<?>) evt.getSource();
-				if ( evt.getClickCount() == 2 )
-				{
+				if (evt.getClickCount() == 2) {
 					final int index = list.locationToIndex(evt.getPoint());
 					final String key = String.valueOf(list.getModel().getElementAt(index));
-					System.out.println( key );
-					try
-					{
+
+					final int qcmpDialogResult = JOptionPane.showConfirmDialog(null,
+																			   String.format("Enable QCMP compression for %s", key),
+																			   "QCMP compression",
+																			   JOptionPane.YES_NO_OPTION,
+																			   JOptionPane.QUESTION_MESSAGE,
+																			   null);
+					final boolean enableQcmp = qcmpDialogResult == JOptionPane.YES_OPTION;
+
+					System.out.printf("%s, qcmp: %s\n", key, (enableQcmp ? "Enabled" : "Disabled"));
+					try {
 						final String filename = datasetUrlMap.get(key);
 						final String title = new File(filename).getName();
 						BigDataViewer.open(filename, title, new ProgressWriterIJ(), ViewerOptions.options());
-					}
-					catch ( final SpimDataException e )
-					{
+					} catch (final SpimDataException e) {
 						e.printStackTrace();
 					}
 				}
@@ -191,12 +189,12 @@ public class BigDataBrowserPlugIn implements Command
 				final JList< ? > list, final Object value, final int index,
 				final boolean isSelected, final boolean cellHasFocus )
 		{
-
 			final JLabel label = ( JLabel ) super.getListCellRendererComponent(
 					list, value, index, isSelected, cellHasFocus );
 			label.setIcon( imageMap.get( value ) );
 			label.setHorizontalTextPosition( JLabel.RIGHT );
 			label.setFont( font );
+
 			return label;
 		}
 	}