Make GUI and Widget updatables

api/src/main/java/com/bartlomiejpluta/base/api/gui/GUI.java

@@ -1,9 +1,10 @@
 package com.bartlomiejpluta.base.api.gui;
 
 import com.bartlomiejpluta.base.internal.gc.Disposable;
+import com.bartlomiejpluta.base.internal.logic.Updatable;
 import com.bartlomiejpluta.base.internal.render.Renderable;
 
-public interface GUI extends Renderable, Disposable {
+public interface GUI extends Renderable, Updatable, Disposable {
    int ALIGN_LEFT = 1 << 0;
    int ALIGN_CENTER = 1 << 1;
    int ALIGN_RIGHT = 1 << 2;

api/src/main/java/com/bartlomiejpluta/base/api/gui/UpdateMode.java

@@ -0,0 +1,6 @@
+package com.bartlomiejpluta.base.api.gui;
+
+public enum UpdateMode {
+   UPDATE_ALL,
+   UPDATE_TOP
+}

api/src/main/java/com/bartlomiejpluta/base/api/gui/Widget.java

@@ -2,8 +2,9 @@ package com.bartlomiejpluta.base.api.gui;
 
 import com.bartlomiejpluta.base.api.event.Reactive;
 import com.bartlomiejpluta.base.api.screen.Screen;
+import com.bartlomiejpluta.base.internal.logic.Updatable;
 
-public interface Widget extends Reactive {
+public interface Widget extends Updatable, Reactive {
    Widget getParent();
 
    void setParent(Widget parent);

api/src/main/java/com/bartlomiejpluta/base/api/gui/WindowManager.java

@@ -5,6 +5,8 @@ import com.bartlomiejpluta.base.api.input.Input;
 import com.bartlomiejpluta.base.api.input.KeyEvent;
 import com.bartlomiejpluta.base.api.screen.Screen;
 import com.bartlomiejpluta.base.lib.gui.BaseWidget;
+import lombok.NonNull;
+import lombok.Setter;
 
 import java.util.Deque;
 import java.util.LinkedList;
@@ -15,18 +17,25 @@ public final class WindowManager extends BaseWidget {
    private final Input input;
    private final Deque<Window> windows = new LinkedList<>();
 
+   @NonNull
+   @Setter
    private DisplayMode displayMode;
 
+   @NonNull
+   @Setter
+   private UpdateMode updateMode;
+
    public WindowManager(Context context) {
-      this(context, DisplayMode.DISPLAY_STACK);
+      this(context, DisplayMode.DISPLAY_STACK, UpdateMode.UPDATE_ALL);
    }
 
-   public WindowManager(Context context, DisplayMode displayMode) {
+   public WindowManager(Context context, DisplayMode displayMode, UpdateMode updateMode) {
       this.input = context.getInput();
 
       super.setSizeMode(SizeMode.RELATIVE, SizeMode.RELATIVE);
       super.setSize(1f, 1f);
       this.displayMode = displayMode;
+      this.updateMode = updateMode;
    }
 
    @Override
@@ -54,10 +63,6 @@ public final class WindowManager extends BaseWidget {
       throw new UnsupportedOperationException("Window Manager is hardcoded to be of MATCH_PARENT mode");
    }
 
-   public void setDisplayMode(DisplayMode mode) {
-      this.displayMode = requireNonNull(mode);
-   }
-
    public void open(Window window) {
       requireNonNull(window, "Window cannot be null");
 
@@ -78,7 +83,6 @@ public final class WindowManager extends BaseWidget {
    }
 
    public void closeAll() {
-
       // Use iterator to support removal from loop inside
       for (var iterator = windows.iterator(); iterator.hasNext(); ) {
          close();
@@ -103,6 +107,24 @@ public final class WindowManager extends BaseWidget {
       return windows.size();
    }
 
+   @Override
+   public void update(float dt) {
+      switch (updateMode) {
+         case UPDATE_ALL -> {
+            for (var window : windows) {
+               window.update(dt);
+            }
+         }
+
+         case UPDATE_TOP -> {
+            var topWindow = windows.peekLast();
+            if (topWindow != null) {
+               topWindow.update(dt);
+            }
+         }
+      }
+   }
+
    @Override
    public void draw(Screen screen, GUI gui) {
       switch (displayMode) {

api/src/main/java/com/bartlomiejpluta/base/lib/gui/BaseContainer.java

@@ -104,4 +104,11 @@ public abstract class BaseContainer extends BaseComponent {
 
       eventHandler.handleEvent(event);
    }
+
+   @Override
+   public void update(float dt) {
+      for (var child : children) {
+         child.update(dt);
+      }
+   }
 }

api/src/main/java/com/bartlomiejpluta/base/lib/gui/BaseWidget.java

@@ -287,6 +287,11 @@ public abstract class BaseWidget implements Widget {
       eventHandler.handleEvent(event);
    }
 
+   @Override
+   public void update(float dt) {
+      // do nothing
+   }
+
    protected <E extends Event> void addEventListener(EventType<E> type, Consumer<E> listener) {
       eventHandler.addListener(type, listener);
    }

api/src/main/java/com/bartlomiejpluta/base/lib/gui/BaseWindow.java

@@ -65,6 +65,13 @@ public abstract class BaseWindow extends BaseWidget implements Window {
       }
    }
 
+   @Override
+   public void update(float dt) {
+      if (content != null) {
+         content.update(dt);
+      }
+   }
+
    @Override
    public void onOpen(WindowManager manager) {
       this.manager = manager;

engine/src/main/java/com/bartlomiejpluta/base/engine/context/model/DefaultContext.java

@@ -288,6 +288,10 @@ public class DefaultContext implements Context {
          }
       }
 
+      for (var gui : guis) {
+         gui.update(dt);
+      }
+
       for (var iterator = sounds.iterator(); iterator.hasNext(); ) {
          var sound = iterator.next();
          if (sound.isStopped()) {

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

@@ -56,6 +56,11 @@ public class NanoVGGUI implements GUI {
       screenWidget = new ScreenWidget(screen);
    }
 
+   @Override
+   public void update(float dt) {
+      screenWidget.update(dt);
+   }
+
    @Override
    public void render(Screen screen, Camera camera, ShaderManager shaderManager) {
       if (!visible) {

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

@@ -237,6 +237,13 @@ public class ScreenWidget implements Widget {
       throw new UnsupportedOperationException();
    }
 
+   @Override
+   public void update(float dt) {
+      if (root != null) {
+         root.update(dt);
+      }
+   }
+
    @Override
    public void draw(Screen screen, GUI gui) {
       if (root != null) {