GUI: In property editor dialog, place initial focus on the property text field

git-svn-id: https://www.prismmodelchecker.org/svn/prism/prism/trunk@11108 bbc10eb1-c90d-0410-af57-cb519fbb1720

prism/src/userinterface/properties/GUIPropertyEditor.java

@@ -113,7 +113,13 @@ public class GUIPropertyEditor extends javax.swing.JDialog implements ActionList
 		setLocation(getX()+(noOpen*50), getY()+(noOpen*50));
 		
 		super.show();
-		
+
+		// Request that the initial focus is placed on the property text field
+		// when the dialog is shown.
+		// This is not guaranteed to work, but if it does then it's
+		// convenient for the user...
+		if (propertyText != null)  // should exist, but be careful nonetheless
+			propertyText.requestFocusInWindow();
 	}
 	
 	public void dispose()