[openrocket#1549] Select all shortcut in ComponentTree

swing/src/net/sf/openrocket/gui/main/componenttree/ComponentTree.java

@@ -6,14 +6,31 @@
 import net.sf.openrocket.document.OpenRocketDocument;
 import net.sf.openrocket.gui.components.BasicTree;
 
+import java.awt.event.KeyEvent;
+import java.awt.event.KeyListener;
+
 
 @SuppressWarnings("serial")
 public class ComponentTree extends BasicTree {
 
 	public ComponentTree(OpenRocketDocument document) {
 		super();
 		this.setModel(new ComponentTreeModel(document.getRocket(), this));
-
+
+		addKeyListener(new KeyListener() {
+			@Override
+			public void keyTyped(KeyEvent e) { }
+
+			@Override
+			public void keyPressed(KeyEvent e) {
+				if ((e.getKeyCode() == KeyEvent.VK_A) && ((e.getModifiersEx() & KeyEvent.META_DOWN_MASK) != 0)) {
+					setSelectionInterval(1, getRowCount());		// Don't select the rocket (row 0)
+				}
+			}
+
+			@Override
+			public void keyReleased(KeyEvent e) { }
+		});
 		this.setCellRenderer(new ComponentTreeRenderer());
 
 		this.setDragEnabled(true);