Fix invalid key event handling in GLFWInput | make GUI does not extend KeyEventHandler interface anymore

engine/src/main/java/com/bartlomiejpluta/base/engine/gui/render/NanoVGGUI.java

@@ -3,7 +3,6 @@ package com.bartlomiejpluta.base.engine.gui.render;
 import com.bartlomiejpluta.base.api.camera.Camera;
 import com.bartlomiejpluta.base.api.context.Context;
 import com.bartlomiejpluta.base.api.gui.*;
-import com.bartlomiejpluta.base.api.input.KeyEvent;
 import com.bartlomiejpluta.base.api.screen.Screen;
 import com.bartlomiejpluta.base.engine.error.AppException;
 import com.bartlomiejpluta.base.engine.gui.manager.FontManager;
@@ -418,11 +417,6 @@ public class NanoVGGUI implements GUI {
       nvgResetScissor(nvg);
    }
 
-   @Override
-   public void handleKeyEvent(KeyEvent event) {
-      screenWidget.handleKeyEvent(event);
-   }
-
    @Override
    public void dispose() {
       log.info("Disposing GUI color buffers");

engine/src/main/java/com/bartlomiejpluta/base/engine/gui/widget/ScreenWidget.java

@@ -234,7 +234,7 @@ public class ScreenWidget implements Widget {
 
    @Override
    public void handleKeyEvent(KeyEvent event) {
-      root.handleKeyEvent(event);
+      throw new UnsupportedOperationException();
    }
 
    @Override

engine/src/main/java/com/bartlomiejpluta/base/engine/ui/model/GLFWInput.java

@@ -23,7 +23,6 @@ public class GLFWInput implements Input {
       this.windowHandle = screen.getID();
    }
 
-   @SuppressWarnings("ForLoopReplaceableByForEach")
    public GLFWInput init() {
       log.info("Registering key callback");
       glfwSetKeyCallback(windowHandle, (window, key, scancode, action, mods) -> {
@@ -34,7 +33,8 @@ public class GLFWInput implements Input {
          }
 
          // Use iterator to support removal from loop inside
-         for (var iterator = keyEventHandlers.iterator(); iterator.hasNext(); ) {
+         // We need also to iterate in FILO order (a stack-based model)
+         for (var iterator = keyEventHandlers.descendingIterator(); iterator.hasNext(); ) {
             if (event.isConsumed()) {
                return;
             }