GUI: improved feedback needed sound notifications (plays only for inactive game or app, see #6853);

Mage.Client/src/main/java/mage/client/util/AppUtil.java

@@ -0,0 +1,28 @@
+package mage.client.util;
+
+import mage.client.MageFrame;
+
+import java.util.UUID;
+
+/**
+ * @author JayDi85
+ */
+public class AppUtil {
+
+    /**
+     * Application is active in operation system (got user focus)
+     */
+    public static boolean isAppActive() {
+        return MageFrame.getInstance().isActive();
+    }
+
+    /**
+     * Current active panel is game panel (e.g. the user sees the checking game)
+     *
+     * @param gameId game to check
+     * @return
+     */
+    public static boolean isGameActive(UUID gameId) {
+        return MageFrame.getInstance().isGameFrameActive(gameId);
+    }
+}