X-Git-Url: http://www2.svjatoslav.eu/gitweb/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Feu%2Fsvjatoslav%2Fsixth%2Fe3d%2Fgui%2Fhumaninput%2FUserInputHandler.java;h=9bbd218450fc59cbaf3f413a65585874674313ae;hb=7e3faa91462a3639b58e83b766b9d5a01bb9cfd2;hp=21fd6673b1b5b0e74b66c2bc7b46174ef2d0e300;hpb=8bceefbdb7316557ee77902cc6ac216f5c1ff160;p=sixth-3d.git

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
--- 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);
 
 }