Use four spaces indentation

OCD made me do it.

android/app/src/main/java/com/reactnativenavigation/layouts/BottomTabsLayout.java

@@ -46,488 +46,488 @@ import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
 @SuppressLint("ViewConstructor")
 public class BottomTabsLayout extends BaseLayout implements AHBottomNavigation.OnTabSelectedListener {
 
-	private ActivityParams params;
-	private SnackbarAndFabContainer snackbarAndFabContainer;
-	private BottomTabs bottomTabs;
-	private ScreenStack[] screenStacks;
-	private final SideMenuParams leftSideMenuParams;
-	private final SideMenuParams rightSideMenuParams;
-	private final SlidingOverlaysQueue slidingOverlaysQueue = new SlidingOverlaysQueue();
-	private
-	@Nullable
-	SideMenu sideMenu;
-	private int currentStackIndex = 0;
-	private LightBox lightBox;
-
-	public BottomTabsLayout(AppCompatActivity activity, ActivityParams params) {
-		super(activity);
-		this.params = params;
-		leftSideMenuParams = params.leftSideMenuParams;
-		rightSideMenuParams = params.rightSideMenuParams;
-		screenStacks = new ScreenStack[params.tabParams.size()];
-		createLayout();
-	}
-
-	private void createLayout() {
-		createSideMenu();
-		createBottomTabs();
-		addBottomTabs();
-		addScreenStacks();
-		createSnackbarContainer();
-		showInitialScreenStack();
-	}
-
-	private void createSideMenu() {
-		if (leftSideMenuParams == null && rightSideMenuParams == null) {
-			return;
-		}
-		sideMenu = new SideMenu(getContext(), leftSideMenuParams, rightSideMenuParams);
-		RelativeLayout.LayoutParams lp = new LayoutParams(MATCH_PARENT, MATCH_PARENT);
-		addView(sideMenu, lp);
-	}
-
-	private void addScreenStacks() {
-		for (int i = screenStacks.length - 1; i >= 0; i--) {
-			createAndAddScreens(i);
-		}
-	}
-
-	private void createAndAddScreens(int position) {
-		ScreenParams screenParams = params.tabParams.get(position);
-		ScreenStack newStack = new ScreenStack(getActivity(), getScreenStackParent(), screenParams.getNavigatorId(), this);
-		newStack.pushInitialScreen(screenParams, createScreenLayoutParams(screenParams));
-		screenStacks[position] = newStack;
-	}
-
-	private RelativeLayout getScreenStackParent() {
-		return sideMenu == null ? this : sideMenu.getContentContainer();
-	}
-
-	@NonNull
-	private LayoutParams createScreenLayoutParams(ScreenParams params) {
-		LayoutParams lp = new LayoutParams(MATCH_PARENT, MATCH_PARENT);
-		if (params.styleParams.drawScreenAboveBottomTabs) {
-			lp.addRule(RelativeLayout.ABOVE, bottomTabs.getId());
-		}
-		return lp;
-	}
-
-	private void createBottomTabs() {
-		bottomTabs = new BottomTabs(getContext());
-		bottomTabs.addTabs(params.tabParams, this);
-	}
-
-	private void addBottomTabs() {
-		LayoutParams lp = new LayoutParams(MATCH_PARENT, WRAP_CONTENT);
-		lp.addRule(ALIGN_PARENT_BOTTOM);
-		getScreenStackParent().addView(bottomTabs, lp);
-	}
-
-	private void createSnackbarContainer() {
-		snackbarAndFabContainer = new SnackbarAndFabContainer(getContext(), this);
-		RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(MATCH_PARENT, MATCH_PARENT);
-		alignSnackbarContainerWithBottomTabs(lp, getCurrentScreen().getStyleParams());
-		snackbarAndFabContainer.setClickable(false);
-		getScreenStackParent().addView(snackbarAndFabContainer, lp);
-	}
-
-	private void showInitialScreenStack() {
-		showStackAndUpdateStyle(screenStacks[0]);
-		EventBus.instance.post(new ScreenChangedEvent(screenStacks[0].peek().getScreenParams()));
-	}
-
-	@Override
-	public View asView() {
-		return this;
-	}
-
-	@Override
-	public boolean onBackPressed() {
-		if (getCurrentScreenStack().handleBackPressInJs()) {
-			return true;
-		}
-
-		if (getCurrentScreenStack().canPop()) {
-			getCurrentScreenStack().pop(true);
-			setBottomTabsStyleFromCurrentScreen();
-			EventBus.instance.post(new ScreenChangedEvent(getCurrentScreenStack().peek().getScreenParams()));
-			return true;
-		} else {
-			return false;
-		}
-	}
-
-	@Override
-	public void setTopBarVisible(String screenInstanceId, boolean hidden, boolean animated) {
-		for (int i = 0; i < bottomTabs.getItemsCount(); i++) {
-			screenStacks[i].setScreenTopBarVisible(screenInstanceId, hidden, animated);
-		}
-	}
-
-	public void setBottomTabsVisible(boolean hidden, boolean animated) {
-		bottomTabs.setVisibility(hidden, animated);
-	}
-
-	@Override
-	public void setTitleBarTitle(String screenInstanceId, String title) {
-		for (int i = 0; i < bottomTabs.getItemsCount(); i++) {
-			screenStacks[i].setScreenTitleBarTitle(screenInstanceId, title);
-		}
-	}
-
-	@Override
-	public void setTitleBarSubtitle(String screenInstanceId, String subtitle) {
-		for (int i = 0; i < bottomTabs.getItemsCount(); i++) {
-			screenStacks[i].setScreenTitleBarSubtitle(screenInstanceId, subtitle);
-		}
-	}
-
-	@Override
-	public void setTitleBarRightButtons(String screenInstanceId, String navigatorEventId, List<TitleBarButtonParams> titleBarButtons) {
-		for (int i = 0; i < bottomTabs.getItemsCount(); i++) {
-			screenStacks[i].setScreenTitleBarRightButtons(screenInstanceId, navigatorEventId, titleBarButtons);
-		}
-	}
-
-	@Override
-	public void setTitleBarLeftButton(String screenInstanceId, String navigatorEventId, TitleBarLeftButtonParams titleBarLeftButtonParams) {
-		for (int i = 0; i < bottomTabs.getItemsCount(); i++) {
-			screenStacks[i].setScreenTitleBarLeftButton(screenInstanceId, navigatorEventId, titleBarLeftButtonParams);
-		}
-	}
-
-	@Override
-	public void setFab(String screenInstanceId, String navigatorEventId, FabParams fabParams) {
-		for (int i = 0; i < bottomTabs.getItemsCount(); i++) {
-			screenStacks[i].setFab(screenInstanceId, fabParams);
-		}
-	}
-
-	@Override
-	public void updateScreenStyle(String screenInstanceId, Bundle styleParams) {
-		for (int i = 0; i < bottomTabs.getItemsCount(); i++) {
-			screenStacks[i].updateScreenStyle(screenInstanceId, styleParams);
-		}
-	}
-
-	@Override
-	public void selectTopTabByTabIndex(String screenInstanceId, int index) {
-		for (int i = 0; i < bottomTabs.getItemsCount(); i++) {
-			screenStacks[i].selectTopTabByTabIndex(screenInstanceId, index);
-		}
-	}
-
-	@Override
-	public void selectTopTabByScreen(String screenInstanceId) {
-		for (int i = 0; i < bottomTabs.getItemsCount(); i++) {
-			screenStacks[i].selectTopTabByScreen(screenInstanceId);
-		}
-	}
-
-	@Override
-	public void toggleSideMenuVisible(boolean animated, Side side) {
-		if (sideMenu != null) {
-			sideMenu.toggleVisible(animated, side);
-		}
-	}
-
-	@Override
-	public void setSideMenuVisible(boolean animated, boolean visible, Side side) {
-		if (sideMenu != null) {
-			sideMenu.setVisible(visible, animated, side);
-		}
-	}
-
-	@Override
-	public void setSideMenuEnabled(boolean enabled, Side side) {
-		if (sideMenu != null) {
-			sideMenu.setDrawerLockMode(enabled ? DrawerLayout.LOCK_MODE_UNLOCKED : DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
-		}
-	}
-
-	@Override
-	public void showSnackbar(SnackbarParams params) {
-		final String eventId = getCurrentScreenStack().peek().getNavigatorEventId();
-		snackbarAndFabContainer.showSnackbar(eventId, params);
-	}
-
-	@Override
-	public void dismissSnackbar() {
-		snackbarAndFabContainer.dismissSnackbar();
-	}
-
-	@Override
-	public void showLightBox(LightBoxParams params) {
-		if (lightBox == null) {
-			lightBox = new LightBox(getActivity(), new Runnable() {
-				@Override
-				public void run() {
-					lightBox = null;
-				}
-			}, params);
-			lightBox.show();
-		}
-	}
-
-	@Override
-	public void dismissLightBox() {
-		if (lightBox != null) {
-			lightBox.hide();
-			lightBox = null;
-		}
-	}
-
-	@Override
-	public void showSlidingOverlay(final SlidingOverlayParams params) {
-		slidingOverlaysQueue.add(new SlidingOverlay(this, params));
-	}
-
-	@Override
-	public void hideSlidingOverlay() {
-		slidingOverlaysQueue.remove();
-	}
-
-	@Override
-	public void onModalDismissed() {
-		EventBus.instance.post(new ScreenChangedEvent(getCurrentScreenStack().peek().getScreenParams()));
-	}
-
-	@Override
-	public boolean containsNavigator(String navigatorId) {
-		// Unused
-		return false;
-	}
-
-	@Override
-	public void showContextualMenu(String screenInstanceId, ContextualMenuParams params, Callback onButtonClicked) {
-		getCurrentScreenStack().peek().showContextualMenu(params, onButtonClicked);
-	}
-
-	@Override
-	public void dismissContextualMenu(String screenInstanceId) {
-		getCurrentScreenStack().peek().dismissContextualMenu();
-	}
-
-	@Override
-	public Screen getCurrentScreen() {
-		return getCurrentScreenStack().peek();
-	}
-
-	public void selectBottomTabByTabIndex(Integer index) {
-		bottomTabs.setCurrentItem(index);
-	}
-
-	public void selectBottomTabByNavigatorId(String navigatorId) {
-		bottomTabs.setCurrentItem(getScreenStackIndex(navigatorId));
-	}
-
-	private boolean hasBackgroundColor(StyleParams params) {
-		return params.screenBackgroundColor != null &&
-				params.screenBackgroundColor.hasColor();
-	}
-
-	private void setStyleFromScreen(StyleParams params) {
-		bottomTabs.setStyleFromScreen(params);
-		if (snackbarAndFabContainer != null && snackbarAndFabContainer.getLayoutParams() instanceof RelativeLayout.LayoutParams)
-			alignSnackbarContainerWithBottomTabs((LayoutParams) snackbarAndFabContainer.getLayoutParams(), params);
-		if (hasBackgroundColor(params)) {
-			asView().setBackgroundColor(params.screenBackgroundColor.getColor());
-		}
-	}
-
-	@Override
-	public void push(ScreenParams params) {
-		ScreenStack screenStack = getScreenStack(params.getNavigatorId());
-		screenStack.push(params, createScreenLayoutParams(params));
-		setStyleFromScreen(params.styleParams);
-		if (isCurrentStack(screenStack)) {
-			alignSnackbarContainerWithBottomTabs((LayoutParams) snackbarAndFabContainer.getLayoutParams(), params.styleParams);
-			EventBus.instance.post(new ScreenChangedEvent(params));
-		}
-	}
-
-	@Override
-	public void pop(final ScreenParams params) {
-		getCurrentScreenStack().pop(params.animateScreenTransitions, new ScreenStack.OnScreenPop() {
-			@Override
-			public void onScreenPopAnimationEnd() {
-				setBottomTabsStyleFromCurrentScreen();
-				alignSnackbarContainerWithBottomTabs((LayoutParams) snackbarAndFabContainer.getLayoutParams(), params.styleParams);
-				EventBus.instance.post(new ScreenChangedEvent(getCurrentScreenStack().peek().getScreenParams()));
-			}
-		});
-	}
-
-	@Override
-	public void popToRoot(final ScreenParams params) {
-		getCurrentScreenStack().popToRoot(params.animateScreenTransitions, new ScreenStack.OnScreenPop() {
-			@Override
-			public void onScreenPopAnimationEnd() {
-				setBottomTabsStyleFromCurrentScreen();
-				alignSnackbarContainerWithBottomTabs((LayoutParams) snackbarAndFabContainer.getLayoutParams(), params.styleParams);
-				EventBus.instance.post(new ScreenChangedEvent(getCurrentScreenStack().peek().getScreenParams()));
-			}
-		});
-	}
-
-	@Override
-	public void newStack(final ScreenParams params) {
-		ScreenStack screenStack = getScreenStack(params.getNavigatorId());
-		screenStack.newStack(params, createScreenLayoutParams(params));
-		if (isCurrentStack(screenStack)) {
-			setStyleFromScreen(params.styleParams);
-			alignSnackbarContainerWithBottomTabs((LayoutParams) snackbarAndFabContainer.getLayoutParams(), params.styleParams);
-			EventBus.instance.post(new ScreenChangedEvent(params));
-		}
-	}
-
-	private void alignSnackbarContainerWithBottomTabs(LayoutParams lp, StyleParams styleParams) {
-		if (styleParams.drawScreenAboveBottomTabs || !styleParams.bottomTabsHidden) {
-			lp.addRule(ABOVE, bottomTabs.getId());
-		} else {
-			ViewUtils.removeRuleCompat(lp, ABOVE);
-		}
-	}
-
-	@Override
-	public void destroy() {
-		snackbarAndFabContainer.destroy();
-		for (ScreenStack screenStack : screenStacks) {
-			screenStack.destroy();
-		}
-		if (sideMenu != null) {
-			sideMenu.destroy();
-		}
-		if (lightBox != null) {
-			lightBox.destroy();
-			lightBox = null;
-		}
-		slidingOverlaysQueue.destroy();
-	}
-
-	@Override
-	public boolean onTabSelected(int position, boolean wasSelected) {
-		if (wasSelected) {
-			sendTabReselectedEventToJs();
-			return false;
-		}
-
-		final int unselectedTabIndex = currentStackIndex;
-		hideCurrentStack();
-		showNewStack(position);
-		EventBus.instance.post(new ScreenChangedEvent(getCurrentScreenStack().peek().getScreenParams()));
-		sendTabSelectedEventToJs(position, unselectedTabIndex);
-		return true;
-	}
-
-	private void sendTabSelectedEventToJs(int selectedTabIndex, int unselectedTabIndex) {
-		String navigatorEventId = getCurrentScreenStack().peek().getNavigatorEventId();
-		WritableMap data = createTabSelectedEventData(selectedTabIndex, unselectedTabIndex);
-		NavigationApplication.instance.getEventEmitter().sendNavigatorEvent("bottomTabSelected", navigatorEventId, data);
-
-		data = createTabSelectedEventData(selectedTabIndex, unselectedTabIndex);
-		NavigationApplication.instance.getEventEmitter().sendNavigatorEvent("bottomTabSelected", data);
-	}
-
-	private WritableMap createTabSelectedEventData(int selectedTabIndex, int unselectedTabIndex) {
-		WritableMap data = Arguments.createMap();
-		data.putInt("selectedTabIndex", selectedTabIndex);
-		data.putInt("unselectedTabIndex", unselectedTabIndex);
-		return data;
-	}
-
-	private void sendTabReselectedEventToJs() {
-		WritableMap data = Arguments.createMap();
-		String navigatorEventId = getCurrentScreenStack().peek().getNavigatorEventId();
-		NavigationApplication.instance.getEventEmitter().sendNavigatorEvent("bottomTabReselected", navigatorEventId, data);
-	}
-
-	private void showNewStack(int position) {
-		showStackAndUpdateStyle(screenStacks[position]);
-		currentStackIndex = position;
-	}
-
-	private void showStackAndUpdateStyle(ScreenStack newStack) {
-		newStack.show();
-		setStyleFromScreen(newStack.getCurrentScreenStyleParams());
-	}
-
-	private void hideCurrentStack() {
-		ScreenStack currentScreenStack = getCurrentScreenStack();
-		currentScreenStack.hide();
-	}
-
-	private ScreenStack getCurrentScreenStack() {
-		return screenStacks[currentStackIndex];
-	}
-
-	private
-	@NonNull
-	ScreenStack getScreenStack(String navigatorId) {
-		int index = getScreenStackIndex(navigatorId);
-		return screenStacks[index];
-	}
-
-	public void setBottomTabBadgeByIndex(Integer index, String badge) {
-		bottomTabs.setNotification(badge, index);
-	}
-
-	public void setBottomTabBadgeByNavigatorId(String navigatorId, String badge) {
-		bottomTabs.setNotification(badge, getScreenStackIndex(navigatorId));
-	}
-
-	public void setBottomTabButtonByIndex(Integer index, ScreenParams params) {
-		bottomTabs.setTabButton(params, index);
-	}
-
-	public void setBottomTabButtonByNavigatorId(String navigatorId, ScreenParams params) {
-		bottomTabs.setTabButton(params, getScreenStackIndex(navigatorId));
-	}
-
-	private int getScreenStackIndex(String navigatorId) throws ScreenStackNotFoundException {
-		for (int i = 0; i < screenStacks.length; i++) {
-			if (screenStacks[i].getNavigatorId().equals(navigatorId)) {
-				return i;
-			}
-		}
-		throw new ScreenStackNotFoundException("Stack " + navigatorId + " not found");
-	}
-
-	private class ScreenStackNotFoundException extends RuntimeException {
-		ScreenStackNotFoundException(String navigatorId) {
-			super(navigatorId);
-		}
-	}
-
-	private boolean isCurrentStack(ScreenStack screenStack) {
-		return getCurrentScreenStack() == screenStack;
-	}
-
-	private void setBottomTabsStyleFromCurrentScreen() {
-		setStyleFromScreen(getCurrentScreenStack().getCurrentScreenStyleParams());
-	}
-
-	@Override
-	public boolean onTitleBarBackButtonClick() {
-		if (getCurrentScreenStack().canPop()) {
-			getCurrentScreenStack().pop(true, new ScreenStack.OnScreenPop() {
-				@Override
-				public void onScreenPopAnimationEnd() {
-					setBottomTabsStyleFromCurrentScreen();
-					EventBus.instance.post(new ScreenChangedEvent(getCurrentScreenStack().peek().getScreenParams()));
-				}
-			});
-			return true;
-		}
-		return false;
-	}
-
-	@Override
-	public void onSideMenuButtonClick() {
-		final String navigatorEventId = getCurrentScreenStack().peek().getNavigatorEventId();
-		NavigationApplication.instance.getEventEmitter().sendNavigatorEvent("sideMenu", navigatorEventId);
-		if (sideMenu != null) {
-			sideMenu.openDrawer(Side.Left);
-		}
-	}
+    private ActivityParams params;
+    private SnackbarAndFabContainer snackbarAndFabContainer;
+    private BottomTabs bottomTabs;
+    private ScreenStack[] screenStacks;
+    private final SideMenuParams leftSideMenuParams;
+    private final SideMenuParams rightSideMenuParams;
+    private final SlidingOverlaysQueue slidingOverlaysQueue = new SlidingOverlaysQueue();
+    private
+    @Nullable
+    SideMenu sideMenu;
+    private int currentStackIndex = 0;
+    private LightBox lightBox;
+
+    public BottomTabsLayout(AppCompatActivity activity, ActivityParams params) {
+        super(activity);
+        this.params = params;
+        leftSideMenuParams = params.leftSideMenuParams;
+        rightSideMenuParams = params.rightSideMenuParams;
+        screenStacks = new ScreenStack[params.tabParams.size()];
+        createLayout();
+    }
+
+    private void createLayout() {
+        createSideMenu();
+        createBottomTabs();
+        addBottomTabs();
+        addScreenStacks();
+        createSnackbarContainer();
+        showInitialScreenStack();
+    }
+
+    private void createSideMenu() {
+        if (leftSideMenuParams == null && rightSideMenuParams == null) {
+            return;
+        }
+        sideMenu = new SideMenu(getContext(), leftSideMenuParams, rightSideMenuParams);
+        RelativeLayout.LayoutParams lp = new LayoutParams(MATCH_PARENT, MATCH_PARENT);
+        addView(sideMenu, lp);
+    }
+
+    private void addScreenStacks() {
+        for (int i = screenStacks.length - 1; i >= 0; i--) {
+            createAndAddScreens(i);
+        }
+    }
+
+    private void createAndAddScreens(int position) {
+        ScreenParams screenParams = params.tabParams.get(position);
+        ScreenStack newStack = new ScreenStack(getActivity(), getScreenStackParent(), screenParams.getNavigatorId(), this);
+        newStack.pushInitialScreen(screenParams, createScreenLayoutParams(screenParams));
+        screenStacks[position] = newStack;
+    }
+
+    private RelativeLayout getScreenStackParent() {
+        return sideMenu == null ? this : sideMenu.getContentContainer();
+    }
+
+    @NonNull
+    private LayoutParams createScreenLayoutParams(ScreenParams params) {
+        LayoutParams lp = new LayoutParams(MATCH_PARENT, MATCH_PARENT);
+        if (params.styleParams.drawScreenAboveBottomTabs) {
+            lp.addRule(RelativeLayout.ABOVE, bottomTabs.getId());
+        }
+        return lp;
+    }
+
+    private void createBottomTabs() {
+        bottomTabs = new BottomTabs(getContext());
+        bottomTabs.addTabs(params.tabParams, this);
+    }
+
+    private void addBottomTabs() {
+        LayoutParams lp = new LayoutParams(MATCH_PARENT, WRAP_CONTENT);
+        lp.addRule(ALIGN_PARENT_BOTTOM);
+        getScreenStackParent().addView(bottomTabs, lp);
+    }
+
+    private void createSnackbarContainer() {
+        snackbarAndFabContainer = new SnackbarAndFabContainer(getContext(), this);
+        RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(MATCH_PARENT, MATCH_PARENT);
+        alignSnackbarContainerWithBottomTabs(lp, getCurrentScreen().getStyleParams());
+        snackbarAndFabContainer.setClickable(false);
+        getScreenStackParent().addView(snackbarAndFabContainer, lp);
+    }
+
+    private void showInitialScreenStack() {
+        showStackAndUpdateStyle(screenStacks[0]);
+        EventBus.instance.post(new ScreenChangedEvent(screenStacks[0].peek().getScreenParams()));
+    }
+
+    @Override
+    public View asView() {
+        return this;
+    }
+
+    @Override
+    public boolean onBackPressed() {
+        if (getCurrentScreenStack().handleBackPressInJs()) {
+            return true;
+        }
+
+        if (getCurrentScreenStack().canPop()) {
+            getCurrentScreenStack().pop(true);
+            setBottomTabsStyleFromCurrentScreen();
+            EventBus.instance.post(new ScreenChangedEvent(getCurrentScreenStack().peek().getScreenParams()));
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    @Override
+    public void setTopBarVisible(String screenInstanceId, boolean hidden, boolean animated) {
+        for (int i = 0; i < bottomTabs.getItemsCount(); i++) {
+            screenStacks[i].setScreenTopBarVisible(screenInstanceId, hidden, animated);
+        }
+    }
+
+    public void setBottomTabsVisible(boolean hidden, boolean animated) {
+        bottomTabs.setVisibility(hidden, animated);
+    }
+
+    @Override
+    public void setTitleBarTitle(String screenInstanceId, String title) {
+        for (int i = 0; i < bottomTabs.getItemsCount(); i++) {
+            screenStacks[i].setScreenTitleBarTitle(screenInstanceId, title);
+        }
+    }
+
+    @Override
+    public void setTitleBarSubtitle(String screenInstanceId, String subtitle) {
+        for (int i = 0; i < bottomTabs.getItemsCount(); i++) {
+            screenStacks[i].setScreenTitleBarSubtitle(screenInstanceId, subtitle);
+        }
+    }
+
+    @Override
+    public void setTitleBarRightButtons(String screenInstanceId, String navigatorEventId, List<TitleBarButtonParams> titleBarButtons) {
+        for (int i = 0; i < bottomTabs.getItemsCount(); i++) {
+            screenStacks[i].setScreenTitleBarRightButtons(screenInstanceId, navigatorEventId, titleBarButtons);
+        }
+    }
+
+    @Override
+    public void setTitleBarLeftButton(String screenInstanceId, String navigatorEventId, TitleBarLeftButtonParams titleBarLeftButtonParams) {
+        for (int i = 0; i < bottomTabs.getItemsCount(); i++) {
+            screenStacks[i].setScreenTitleBarLeftButton(screenInstanceId, navigatorEventId, titleBarLeftButtonParams);
+        }
+    }
+
+    @Override
+    public void setFab(String screenInstanceId, String navigatorEventId, FabParams fabParams) {
+        for (int i = 0; i < bottomTabs.getItemsCount(); i++) {
+            screenStacks[i].setFab(screenInstanceId, fabParams);
+        }
+    }
+
+    @Override
+    public void updateScreenStyle(String screenInstanceId, Bundle styleParams) {
+        for (int i = 0; i < bottomTabs.getItemsCount(); i++) {
+            screenStacks[i].updateScreenStyle(screenInstanceId, styleParams);
+        }
+    }
+
+    @Override
+    public void selectTopTabByTabIndex(String screenInstanceId, int index) {
+        for (int i = 0; i < bottomTabs.getItemsCount(); i++) {
+            screenStacks[i].selectTopTabByTabIndex(screenInstanceId, index);
+        }
+    }
+
+    @Override
+    public void selectTopTabByScreen(String screenInstanceId) {
+        for (int i = 0; i < bottomTabs.getItemsCount(); i++) {
+            screenStacks[i].selectTopTabByScreen(screenInstanceId);
+        }
+    }
+
+    @Override
+    public void toggleSideMenuVisible(boolean animated, Side side) {
+        if (sideMenu != null) {
+            sideMenu.toggleVisible(animated, side);
+        }
+    }
+
+    @Override
+    public void setSideMenuVisible(boolean animated, boolean visible, Side side) {
+        if (sideMenu != null) {
+            sideMenu.setVisible(visible, animated, side);
+        }
+    }
+
+    @Override
+    public void setSideMenuEnabled(boolean enabled, Side side) {
+        if (sideMenu != null) {
+            sideMenu.setDrawerLockMode(enabled ? DrawerLayout.LOCK_MODE_UNLOCKED : DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
+        }
+    }
+
+    @Override
+    public void showSnackbar(SnackbarParams params) {
+        final String eventId = getCurrentScreenStack().peek().getNavigatorEventId();
+        snackbarAndFabContainer.showSnackbar(eventId, params);
+    }
+
+    @Override
+    public void dismissSnackbar() {
+        snackbarAndFabContainer.dismissSnackbar();
+    }
+
+    @Override
+    public void showLightBox(LightBoxParams params) {
+        if (lightBox == null) {
+            lightBox = new LightBox(getActivity(), new Runnable() {
+                @Override
+                public void run() {
+                    lightBox = null;
+                }
+            }, params);
+            lightBox.show();
+        }
+    }
+
+    @Override
+    public void dismissLightBox() {
+        if (lightBox != null) {
+            lightBox.hide();
+            lightBox = null;
+        }
+    }
+
+    @Override
+    public void showSlidingOverlay(final SlidingOverlayParams params) {
+        slidingOverlaysQueue.add(new SlidingOverlay(this, params));
+    }
+
+    @Override
+    public void hideSlidingOverlay() {
+        slidingOverlaysQueue.remove();
+    }
+
+    @Override
+    public void onModalDismissed() {
+        EventBus.instance.post(new ScreenChangedEvent(getCurrentScreenStack().peek().getScreenParams()));
+    }
+
+    @Override
+    public boolean containsNavigator(String navigatorId) {
+        // Unused
+        return false;
+    }
+
+    @Override
+    public void showContextualMenu(String screenInstanceId, ContextualMenuParams params, Callback onButtonClicked) {
+        getCurrentScreenStack().peek().showContextualMenu(params, onButtonClicked);
+    }
+
+    @Override
+    public void dismissContextualMenu(String screenInstanceId) {
+        getCurrentScreenStack().peek().dismissContextualMenu();
+    }
+
+    @Override
+    public Screen getCurrentScreen() {
+        return getCurrentScreenStack().peek();
+    }
+
+    public void selectBottomTabByTabIndex(Integer index) {
+        bottomTabs.setCurrentItem(index);
+    }
+
+    public void selectBottomTabByNavigatorId(String navigatorId) {
+        bottomTabs.setCurrentItem(getScreenStackIndex(navigatorId));
+    }
+
+    private boolean hasBackgroundColor(StyleParams params) {
+        return params.screenBackgroundColor != null &&
+            params.screenBackgroundColor.hasColor();
+    }
+
+    private void setStyleFromScreen(StyleParams params) {
+        bottomTabs.setStyleFromScreen(params);
+        if (snackbarAndFabContainer != null && snackbarAndFabContainer.getLayoutParams() instanceof RelativeLayout.LayoutParams)
+            alignSnackbarContainerWithBottomTabs((LayoutParams) snackbarAndFabContainer.getLayoutParams(), params);
+        if (hasBackgroundColor(params)) {
+            asView().setBackgroundColor(params.screenBackgroundColor.getColor());
+        }
+    }
+
+    @Override
+    public void push(ScreenParams params) {
+        ScreenStack screenStack = getScreenStack(params.getNavigatorId());
+        screenStack.push(params, createScreenLayoutParams(params));
+        setStyleFromScreen(params.styleParams);
+        if (isCurrentStack(screenStack)) {
+            alignSnackbarContainerWithBottomTabs((LayoutParams) snackbarAndFabContainer.getLayoutParams(), params.styleParams);
+            EventBus.instance.post(new ScreenChangedEvent(params));
+        }
+    }
+
+    @Override
+    public void pop(final ScreenParams params) {
+        getCurrentScreenStack().pop(params.animateScreenTransitions, new ScreenStack.OnScreenPop() {
+            @Override
+            public void onScreenPopAnimationEnd() {
+                setBottomTabsStyleFromCurrentScreen();
+                alignSnackbarContainerWithBottomTabs((LayoutParams) snackbarAndFabContainer.getLayoutParams(), params.styleParams);
+                EventBus.instance.post(new ScreenChangedEvent(getCurrentScreenStack().peek().getScreenParams()));
+            }
+        });
+    }
+
+    @Override
+    public void popToRoot(final ScreenParams params) {
+        getCurrentScreenStack().popToRoot(params.animateScreenTransitions, new ScreenStack.OnScreenPop() {
+            @Override
+            public void onScreenPopAnimationEnd() {
+                setBottomTabsStyleFromCurrentScreen();
+                alignSnackbarContainerWithBottomTabs((LayoutParams) snackbarAndFabContainer.getLayoutParams(), params.styleParams);
+                EventBus.instance.post(new ScreenChangedEvent(getCurrentScreenStack().peek().getScreenParams()));
+            }
+        });
+    }
+
+    @Override
+    public void newStack(final ScreenParams params) {
+        ScreenStack screenStack = getScreenStack(params.getNavigatorId());
+        screenStack.newStack(params, createScreenLayoutParams(params));
+        if (isCurrentStack(screenStack)) {
+            setStyleFromScreen(params.styleParams);
+            alignSnackbarContainerWithBottomTabs((LayoutParams) snackbarAndFabContainer.getLayoutParams(), params.styleParams);
+            EventBus.instance.post(new ScreenChangedEvent(params));
+        }
+    }
+
+    private void alignSnackbarContainerWithBottomTabs(LayoutParams lp, StyleParams styleParams) {
+        if (styleParams.drawScreenAboveBottomTabs || !styleParams.bottomTabsHidden) {
+            lp.addRule(ABOVE, bottomTabs.getId());
+        } else {
+            ViewUtils.removeRuleCompat(lp, ABOVE);
+        }
+    }
+
+    @Override
+    public void destroy() {
+        snackbarAndFabContainer.destroy();
+        for (ScreenStack screenStack : screenStacks) {
+            screenStack.destroy();
+        }
+        if (sideMenu != null) {
+            sideMenu.destroy();
+        }
+        if (lightBox != null) {
+            lightBox.destroy();
+            lightBox = null;
+        }
+        slidingOverlaysQueue.destroy();
+    }
+
+    @Override
+    public boolean onTabSelected(int position, boolean wasSelected) {
+        if (wasSelected) {
+            sendTabReselectedEventToJs();
+            return false;
+        }
+
+        final int unselectedTabIndex = currentStackIndex;
+        hideCurrentStack();
+        showNewStack(position);
+        EventBus.instance.post(new ScreenChangedEvent(getCurrentScreenStack().peek().getScreenParams()));
+        sendTabSelectedEventToJs(position, unselectedTabIndex);
+        return true;
+    }
+
+    private void sendTabSelectedEventToJs(int selectedTabIndex, int unselectedTabIndex) {
+        String navigatorEventId = getCurrentScreenStack().peek().getNavigatorEventId();
+        WritableMap data = createTabSelectedEventData(selectedTabIndex, unselectedTabIndex);
+        NavigationApplication.instance.getEventEmitter().sendNavigatorEvent("bottomTabSelected", navigatorEventId, data);
+
+        data = createTabSelectedEventData(selectedTabIndex, unselectedTabIndex);
+        NavigationApplication.instance.getEventEmitter().sendNavigatorEvent("bottomTabSelected", data);
+    }
+
+    private WritableMap createTabSelectedEventData(int selectedTabIndex, int unselectedTabIndex) {
+        WritableMap data = Arguments.createMap();
+        data.putInt("selectedTabIndex", selectedTabIndex);
+        data.putInt("unselectedTabIndex", unselectedTabIndex);
+        return data;
+    }
+
+    private void sendTabReselectedEventToJs() {
+        WritableMap data = Arguments.createMap();
+        String navigatorEventId = getCurrentScreenStack().peek().getNavigatorEventId();
+        NavigationApplication.instance.getEventEmitter().sendNavigatorEvent("bottomTabReselected", navigatorEventId, data);
+    }
+
+    private void showNewStack(int position) {
+        showStackAndUpdateStyle(screenStacks[position]);
+        currentStackIndex = position;
+    }
+
+    private void showStackAndUpdateStyle(ScreenStack newStack) {
+        newStack.show();
+        setStyleFromScreen(newStack.getCurrentScreenStyleParams());
+    }
+
+    private void hideCurrentStack() {
+        ScreenStack currentScreenStack = getCurrentScreenStack();
+        currentScreenStack.hide();
+    }
+
+    private ScreenStack getCurrentScreenStack() {
+        return screenStacks[currentStackIndex];
+    }
+
+    private
+    @NonNull
+    ScreenStack getScreenStack(String navigatorId) {
+        int index = getScreenStackIndex(navigatorId);
+        return screenStacks[index];
+    }
+
+    public void setBottomTabBadgeByIndex(Integer index, String badge) {
+        bottomTabs.setNotification(badge, index);
+    }
+
+    public void setBottomTabBadgeByNavigatorId(String navigatorId, String badge) {
+        bottomTabs.setNotification(badge, getScreenStackIndex(navigatorId));
+    }
+
+    public void setBottomTabButtonByIndex(Integer index, ScreenParams params) {
+        bottomTabs.setTabButton(params, index);
+    }
+
+    public void setBottomTabButtonByNavigatorId(String navigatorId, ScreenParams params) {
+        bottomTabs.setTabButton(params, getScreenStackIndex(navigatorId));
+    }
+
+    private int getScreenStackIndex(String navigatorId) throws ScreenStackNotFoundException {
+        for (int i = 0; i < screenStacks.length; i++) {
+            if (screenStacks[i].getNavigatorId().equals(navigatorId)) {
+                return i;
+            }
+        }
+        throw new ScreenStackNotFoundException("Stack " + navigatorId + " not found");
+    }
+
+    private class ScreenStackNotFoundException extends RuntimeException {
+        ScreenStackNotFoundException(String navigatorId) {
+            super(navigatorId);
+        }
+    }
+
+    private boolean isCurrentStack(ScreenStack screenStack) {
+        return getCurrentScreenStack() == screenStack;
+    }
+
+    private void setBottomTabsStyleFromCurrentScreen() {
+        setStyleFromScreen(getCurrentScreenStack().getCurrentScreenStyleParams());
+    }
+
+    @Override
+    public boolean onTitleBarBackButtonClick() {
+        if (getCurrentScreenStack().canPop()) {
+            getCurrentScreenStack().pop(true, new ScreenStack.OnScreenPop() {
+                @Override
+                public void onScreenPopAnimationEnd() {
+                    setBottomTabsStyleFromCurrentScreen();
+                    EventBus.instance.post(new ScreenChangedEvent(getCurrentScreenStack().peek().getScreenParams()));
+                }
+            });
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    public void onSideMenuButtonClick() {
+        final String navigatorEventId = getCurrentScreenStack().peek().getNavigatorEventId();
+        NavigationApplication.instance.getEventEmitter().sendNavigatorEvent("sideMenu", navigatorEventId);
+        if (sideMenu != null) {
+            sideMenu.openDrawer(Side.Left);
+        }
+    }
 }