refactor: set controller pattern to bottom sheet

app/src/main/java/com/cappielloantonio/tempo/navigation/NavigationController.java

@@ -0,0 +1,44 @@
+package com.cappielloantonio.tempo.navigation;
+
+import android.view.View;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.OptIn;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.media3.common.util.UnstableApi;
+import androidx.navigation.NavController;
+
+import com.cappielloantonio.tempo.navigation.NavigationHelper;
+
+import com.google.android.material.bottomsheet.BottomSheetBehavior;
+
+public class NavigationController {
+
+    NavigationHelper helper;
+
+    public NavigationController(@NonNull NavigationHelper helper) {
+        this.helper = helper;
+    }
+
+    public void syncWithBottomSheetBehavior(BottomSheetBehavior<View> bottomSheetBehavior,
+                                            NavController navController) {
+        helper.syncWithBottomSheetBehavior(bottomSheetBehavior, navController);
+
+    }
+
+    public void setNavbarVisibility(boolean visibility) {
+        helper.setBottomNavigationBarVisibility(visibility);
+    }
+
+    public void setDrawerLock(boolean visibility) {
+        helper.setNavigationDrawerLock(visibility);
+    }
+
+    public void toggleDrawerLockOnOrientation(AppCompatActivity activity) {
+        helper.toggleNavigationDrawerLockOnOrientationChange(activity);
+    }
+
+    public void setSystemBarsVisibility(AppCompatActivity activity, boolean visibility) {
+        helper.setSystemBarsVisibility(activity, visibility);
+    }
+}

app/src/main/java/com/cappielloantonio/tempo/navigation/NavigationHelper.java

@@ -0,0 +1,167 @@
+package com.cappielloantonio.tempo.navigation;
+
+import android.content.Context;
+import android.content.res.Configuration;
+import android.view.View;
+import android.view.Window;
+import android.widget.FrameLayout;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.OptIn;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.view.WindowCompat;
+import androidx.core.view.WindowInsetsCompat;
+import androidx.core.view.WindowInsetsControllerCompat;
+import androidx.drawerlayout.widget.DrawerLayout;
+import androidx.media3.common.util.UnstableApi;
+import androidx.navigation.NavController;
+import androidx.navigation.NavDestination;
+import androidx.navigation.fragment.NavHostFragment;
+import androidx.navigation.ui.NavigationUI;
+
+import com.cappielloantonio.tempo.R;
+import com.cappielloantonio.tempo.ui.activity.MainActivity;
+import com.cappielloantonio.tempo.util.Preferences;
+import com.google.android.material.bottomnavigation.BottomNavigationView;
+import com.google.android.material.bottomsheet.BottomSheetBehavior;
+import com.google.android.material.navigation.NavigationView;
+
+import org.jetbrains.annotations.Contract;
+
+import java.util.Objects;
+
+public class NavigationHelper {
+    /* UI components */
+    private BottomNavigationView bottomNavigationView;
+    private FrameLayout bottomNavigationViewFrame;
+    private DrawerLayout drawerLayout;
+
+    /* Navigation components */
+    private NavigationView navigationView;
+    private NavHostFragment navHostFragment;
+
+    /* States that need to be remembered */
+    // -- //
+
+    /* Private constructor */
+    public NavigationHelper(@NonNull BottomNavigationView bottomNavigationView,
+                            @NonNull FrameLayout bottomNavigationViewFrame,
+                            @NonNull DrawerLayout drawerLayout,
+                            @NonNull NavigationView navigationView,
+                            @NonNull NavHostFragment navHostFragment) {
+        this.bottomNavigationView = bottomNavigationView;
+        this.bottomNavigationViewFrame = bottomNavigationViewFrame;
+        this.drawerLayout = drawerLayout;
+        this.navigationView = navigationView;
+        this.navHostFragment = navHostFragment;
+    }
+
+    public void syncWithBottomSheetBehavior(@NonNull BottomSheetBehavior<View> bottomSheetBehavior,
+                                            @NonNull NavController navController) {
+        navController.addOnDestinationChangedListener(
+                (controller, destination, arguments) -> {
+                    // React to the user clicking one of these on bottom-navbar/drawer
+                    boolean isTarget = isTargetDestination(destination);
+                    int currentState = bottomSheetBehavior.getState();
+
+                    if (isTarget && currentState == BottomSheetBehavior.STATE_EXPANDED) {
+                        bottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
+                    }
+                });
+
+        NavigationUI.setupWithNavController(bottomNavigationView, navController);
+        NavigationUI.setupWithNavController(navigationView, navController);
+    }
+
+    @Contract(pure = true)
+    private static boolean isTargetDestination(NavDestination destination) {
+        int destId = destination.getId();
+        return destId == R.id.homeFragment ||
+                destId == R.id.libraryFragment ||
+                destId == R.id.downloadFragment ||
+                destId == R.id.albumCatalogueFragment ||
+                destId == R.id.artistCatalogueFragment ||
+                destId == R.id.genreCatalogueFragment ||
+                destId == R.id.playlistCatalogueFragment;
+    }
+
+    /*
+    Clean public methods
+    Removes the need to invoke the activity on the fragment
+     */
+
+    public void setBottomNavigationBarVisibility(boolean visible) {
+        int visibility = visible
+                ? View.VISIBLE
+                : View.GONE;
+        bottomNavigationView.setVisibility(visibility);
+        bottomNavigationViewFrame.setVisibility(visibility);
+    }
+
+    public void setNavigationDrawerLock(boolean locked) {
+        int mode = locked
+                ? DrawerLayout.LOCK_MODE_LOCKED_CLOSED
+                : DrawerLayout.LOCK_MODE_UNLOCKED;
+        drawerLayout.setDrawerLockMode(mode);
+    }
+
+    @OptIn(markerClass = UnstableApi.class)
+    public void toggleNavigationDrawerLockOnOrientationChange(
+            AppCompatActivity activity) {
+
+        int orientation = activity.getResources().getConfiguration().orientation;
+        boolean isLandscape = orientation == Configuration.ORIENTATION_LANDSCAPE;
+
+        if (Preferences.getEnableDrawerOnPortrait()) {
+            setNavigationDrawerLock(false);
+            return;
+        }
+        setNavigationDrawerLock(!isLandscape);
+    }
+
+    /*
+    All of these are the "backward compatible" changes that don't break the assumption
+    that everything was defined on the activity and is gobally available
+     */
+
+    @NonNull
+    public BottomNavigationView getBottomNavigationView() {
+        return bottomNavigationView;
+    }
+
+    @NonNull
+    public FrameLayout getBottomNavigationViewFrame() {
+        return bottomNavigationViewFrame;
+    }
+
+    @NonNull
+    public DrawerLayout getDrawerLayout() {
+        return drawerLayout;
+    }
+
+    /*
+    Auxiliar functions, could be moved somewhere else
+     */
+
+    @OptIn(markerClass = UnstableApi.class)
+    public void setSystemBarsVisibility(AppCompatActivity activity, boolean visibility) {
+        WindowInsetsControllerCompat insetsController;
+        Window window = activity.getWindow();
+        View decorView = window.getDecorView();
+        insetsController = new WindowInsetsControllerCompat(window, decorView);
+
+        if (visibility) {
+            WindowCompat.setDecorFitsSystemWindows(window, true);
+            insetsController.show(WindowInsetsCompat.Type.navigationBars());
+            insetsController.show(WindowInsetsCompat.Type.statusBars());
+            insetsController.setSystemBarsBehavior(
+                    WindowInsetsControllerCompat.BEHAVIOR_DEFAULT);
+        } else {
+            WindowCompat.setDecorFitsSystemWindows(window, false);
+            insetsController.hide(WindowInsetsCompat.Type.navigationBars());
+            insetsController.hide(WindowInsetsCompat.Type.statusBars());
+            insetsController.setSystemBarsBehavior(
+                    WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE);
+        }
+    }
+}