| // |
| // Copyright 2018 Google Inc. |
| // |
| // 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 <Foundation/Foundation.h> |
| |
| #import "GTXTreeIteratorElement.h" |
| |
| NS_ASSUME_NONNULL_BEGIN |
| |
| /** |
| * Block type used by GTXAccessibilityTree APIs for handling iteration. |
| */ |
| typedef void (^GTXTreeIterationBlock)(GTXTreeIteratorElement *iteratorElement); |
| |
| /** |
| * An enumerator for the accessibility trees navigated by accessibility services like VoiceOver. |
| */ |
| @interface GTXAccessibilityTree : NSEnumerator |
| |
| /** |
| * Creates a new accessibility tree whose traversals will include the given @c rootElements. |
| */ |
| - (instancetype)initWithRootElements:(NSArray *)rootElements; |
| |
| /** |
| * Iterates through all the elements in the tree using the given block |
| * |
| * @param block The block that will be invoked with iteration element objects. |
| */ |
| - (void)iterateAllElementsWithBlock:(GTXTreeIterationBlock)block; |
| |
| @end |
| |
| NS_ASSUME_NONNULL_END |
