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Projekte/jme-common/src/main/java/pp/dialog/StateCheckboxModel.java

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+////////////////////////////////////////
+// Programming project code
+// UniBw M, 2022, 2023, 2024
+// www.unibw.de/inf2
+// (c) Mark Minas (mark.minas@unibw.de)
+////////////////////////////////////////
+
+package pp.dialog;
+
+import com.jme3.app.Application;
+import com.jme3.app.state.AppState;
+import com.simsilica.lemur.DefaultCheckboxModel;
+
+/**
+ * A checkbox model for enabling and disabling app states.
+ * This model links a checkbox with an AppState, so that checking
+ * or unchecking the box enables or disables the state, respectively.
+ */
+public class StateCheckboxModel extends DefaultCheckboxModel {
+    private final AppState state;
+
+    /**
+     * Constructs a StateCheckboxModel for the specified app state class.
+     *
+     * @param app        the application containing the state manager
+     * @param stateClass the class of the app state to be controlled
+     */
+    public StateCheckboxModel(Application app, Class<? extends AppState> stateClass) {
+        this(app.getStateManager().getState(stateClass));
+    }
+
+    /**
+     * Constructs a StateCheckboxModel for the specified app state.
+     *
+     * @param state the app state to be controlled
+     */
+    public StateCheckboxModel(AppState state) {
+        this.state = state;
+        setChecked(state.isEnabled());
+    }
+
+    /**
+     * Sets the checked state of the checkbox and enables or disables
+     * the associated app state accordingly.
+     *
+     * @param checked true to check the box and enable the state, false to uncheck the box and disable the state
+     */
+    @Override
+    public void setChecked(boolean checked) {
+        super.setChecked(checked);
+        state.setEnabled(checked);
+    }
+}