Fixes issue 3450: Enter in add nickname dialog in PMD no longer works

Change-Id: Ic7736690168630d1d0e8e8b7331b1c1ca3fdaa69
Reviewed-on: http://gerrit.dmdirc.com/377
Reviewed-by: Chris Smith <chris@dmdirc.com>
Tested-by: Chris Smith <chris@dmdirc.com>

src/com/dmdirc/addons/ui_dummy/DummyController.java

 
     /** {@inheritDoc} */
     @Override
+    @Deprecated
     public Window getActiveWindow() {
         return null;
     }

src/com/dmdirc/addons/ui_swing/SwingController.java

 
     /** {@inheritDoc} */
     @Override
+    @Deprecated
     public Window getActiveWindow() {
         return me.getActiveFrame();
     }

src/com/dmdirc/addons/ui_swing/dialogs/StandardInputDialog.java

         });
     }
 
+    /** {@inheritDoc} */
+    @Override
+    public boolean enterPressed() {
+        executeAction(getOkButton());
+        return true;
+    }
+
     /**
      * Validates the change.
      */