| // Copyright 2020-present the Material Components for iOS authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #import <UIKit/UIKit.h> |
| |
| @class MDCBottomNavigationBar; |
| |
| /** |
| Delegate protocol for MDCBottomNavigationBar. Clients may implement this protocol to receive |
| notifications of selection changes by user action in the bottom navigation bar. |
| */ |
| @protocol MDCBottomNavigationBarDelegate <UINavigationBarDelegate> |
| |
| @optional |
| |
| /** |
| Called before the selected item changes by user action. Return YES to allow the selection. If not |
| implemented all items changes are allowed. |
| */ |
| - (BOOL)bottomNavigationBar:(nonnull MDCBottomNavigationBar *)bottomNavigationBar |
| shouldSelectItem:(nonnull UITabBarItem *)item; |
| |
| /** |
| Called when the selected item changes by user action. |
| */ |
| - (void)bottomNavigationBar:(nonnull MDCBottomNavigationBar *)bottomNavigationBar |
| didSelectItem:(nonnull UITabBarItem *)item; |
| |
| @end |
