change keyboard demo to event listener

c_os/user/demo/KeyboardDemo.cc

@@ -8,8 +8,8 @@
  * Autor:           Michael Schoettner, HHU, 26.10.2018                      *
  *****************************************************************************/
 
-#include "lib/Input.h"
 #include "user/demo/KeyboardDemo.h"
+#include "lib/Input.h"
 
 void KeyboardDemo::run() {
 
@@ -18,7 +18,9 @@ void KeyboardDemo::run() {
     kout << "Keyboard Demo: " << endl;
 
     while (true) {
-        kout << getch();
+        kout << listener.waitForKeyEvent();
+
+        // kout << getch();
         kout.flush();
     }
 }

c_os/user/demo/KeyboardDemo.h

@@ -13,14 +13,18 @@
 
 #include "kernel/Globals.h"
 #include "kernel/threads/Thread.h"
+#include "user/KeyEventListener.h"
 
 class KeyboardDemo : public Thread {
 private:
     KeyboardDemo(const KeyboardDemo& copy) = delete;
 
+    KeyEventListener listener;
+
 public:
-    KeyboardDemo() {
+    KeyboardDemo() : listener(*this) {
         kout << "Initialized KeyboardDemo" << endl;
+        kevman.subscribe(listener);
     }
 
     void run() override;