Code refactoring

[sixth-3d.git] / src / main / java / eu / svjatoslav / sixth / e3d / gui / humaninput / UserInputHandler.java

diff --git a/src/main/java/eu/svjatoslav/sixth/e3d/gui/humaninput/UserInputHandler.java b/src/main/java/eu/svjatoslav/sixth/e3d/gui/humaninput/UserInputHandler.java
index 21fd667..9bbd218 100644 (file)
--- a/src/main/java/eu/svjatoslav/sixth/e3d/gui/humaninput/UserInputHandler.java
+++ b/src/main/java/eu/svjatoslav/sixth/e3d/gui/humaninput/UserInputHandler.java
@@ -1,12 +1,7 @@
 /*
- * Sixth 3D engine. Copyright ©2012-2018, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 3 of the GNU Lesser General Public License
- * or later as published by the Free Software Foundation.
- *
+ * Sixth 3D engine. Author: Svjatoslav Agejenko. 
+ * This project is released under Creative Commons Zero (CC0) license.
  */
-
 package eu.svjatoslav.sixth.e3d.gui.humaninput;
 
 import eu.svjatoslav.sixth.e3d.gui.ViewPanel;
@@ -16,12 +11,24 @@ import java.awt.event.KeyEvent;
 
 public interface UserInputHandler extends ViewRenderListener {
 
-    void focusLost(ViewPanel viewPanel);
-
-    void focusReceived(ViewPanel viewPanel);
-
-    void keyPressed(KeyEvent event, ViewPanel viewPanel);
-
-    void keyReleased(KeyEvent event, ViewPanel viewPanel);
+    /**
+     * @return <code>true</code> if view update is needed.
+     */
+    boolean focusLost(ViewPanel viewPanel);
+
+    /**
+     * @return <code>true</code> if view update is needed.
+     */
+    boolean focusReceived(ViewPanel viewPanel);
+
+    /**
+     * @return <code>true</code> if view update is needed.
+     */
+    boolean keyPressed(KeyEvent event, ViewPanel viewPanel);
+
+    /**
+     * @return <code>true</code> if view update is needed.
+     */
+    boolean keyReleased(KeyEvent event, ViewPanel viewPanel);
 
 }