| // Copyright 2017-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 MDCTabBarIndicatorAttributes; |
| @protocol MDCTabBarIndicatorContext; |
| |
| /* |
| Template for indicator content which defines how the indicator changes appearance in response to |
| changes in its context. |
| |
| Template objects are expected to be immutable once set on a tab bar. |
| */ |
| @protocol MDCTabBarIndicatorTemplate <NSObject> |
| |
| /** |
| Returns an attributes object that describes how the indicator should appear in a given context. |
| */ |
| - (nonnull MDCTabBarIndicatorAttributes *)indicatorAttributesForContext: |
| (nonnull id<MDCTabBarIndicatorContext>)context; |
| |
| @end |
