Add placeholder for future showVirtualKeyboard method for platforms implementing TouchInput

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@10897 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/src/android/com/jme3/input/android/AndroidInput.java

@@ -679,4 +679,8 @@ public class AndroidInput implements
         return mouseEventsEnabled;
     }
 
+    public void showVirtualKeyboard(boolean visible) {
+        throw new UnsupportedOperationException("Not supported yet.");
+    }
+
 }

engine/src/core/com/jme3/input/TouchInput.java

@@ -100,4 +100,10 @@ public interface TouchInput extends Input {
      */
     public void setOmitHistoricEvents(boolean dontSendHistory);
     
+    /**
+     * Displays or hides the onscreen soft keyboard
+     * @param visible 
+     */
+    public void showVirtualKeyboard (final boolean visible);
+    
 }