mirror of
https://github.com/Swiftgram/Telegram-iOS.git
synced 2025-12-19 04:39:36 +00:00
4e757f0969
- Refactor naming of ASEnvironmentCollection to ASEnvironmentState - Remove struct pointers - Move ASEnvironmentStatePropagation to a enum class - Move merge functions to pure functions - Move ASLayoutOptionsForwarding and ASLayoutableExtensibility into ASLayoutSpec and ASDisplayNode - Remove ASLayoutableSetValuesForLayoutable and move into explicit classes (ASDisplayNode, ASTextNode)
70 lines
3.0 KiB
Objective-C
70 lines
3.0 KiB
Objective-C
/*
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* Copyright (c) 2014-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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*/
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#import "ASEnvironment.h"
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#pragma once
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enum class ASEnvironmentStatePropagation { DOWN, UP };
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#pragma mark - Set and get extensible values for layout options
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void _ASEnvironmentLayoutOptionsExtensionSetBoolAtIndex(id<ASEnvironment> object, int idx, BOOL value);
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BOOL _ASEnvironmentLayoutOptionsExtensionGetBoolAtIndex(id<ASEnvironment> object, int idx);
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void _ASEnvironmentLayoutOptionsExtensionSetIntegerAtIndex(id<ASEnvironment> object, int idx, NSInteger value);
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NSInteger _ASEnvironmentLayoutOptionsExtensionGetIntegerAtIndex(id<ASEnvironment> object, int idx);
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void _ASEnvironmentLayoutOptionsExtensionSetEdgeInsetsAtIndex(id<ASEnvironment> object, int idx, UIEdgeInsets value);
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UIEdgeInsets _ASEnvironmentLayoutOptionsExtensionGetEdgeInsetsAtIndex(id<ASEnvironment> object, int idx);
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#pragma mark - Traversing an ASEnvironment Tree
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void ASEnvironmentPerformBlockOnObjectAndChildren(id<ASEnvironment> object, void(^block)(id<ASEnvironment> object));
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void ASEnvironmentPerformBlockOnObjectAndParents(id<ASEnvironment> object, void(^block)(id<ASEnvironment> object));
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#pragma mark - Merging
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static const struct ASEnvironmentLayoutOptionsState ASEnvironmentDefaultLayoutOptionsState = {};
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ASEnvironmentState ASEnvironmentMergeObjectAndState(ASEnvironmentState environmentState, ASEnvironmentLayoutOptionsState state, ASEnvironmentStatePropagation propagation);
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static const struct ASEnvironmentHierarchyState ASEnvironmentDefaultHierarchyState = {};
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ASEnvironmentState ASEnvironmentMergeObjectAndState(ASEnvironmentState environmentState, ASEnvironmentHierarchyState state, ASEnvironmentStatePropagation propagation);
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#pragma mark - Propagation
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template <typename ASEnvironmentStateType>
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void ASEnvironmentStatePropagateDown(id<ASEnvironment> object, ASEnvironmentStateType state) {
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ASEnvironmentPerformBlockOnObjectAndChildren(object, ^(id<ASEnvironment> node) {
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object.environmentState = ASEnvironmentMergeObjectAndState(object.environmentState, state, ASEnvironmentStatePropagation::DOWN);
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});
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}
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template <typename ASEnvironmentStateType>
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void ASEnvironmentStatePropagateUp(id<ASEnvironment> object, ASEnvironmentStateType state) {
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ASEnvironmentPerformBlockOnObjectAndParents(object, ^(id<ASEnvironment> node) {
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object.environmentState = ASEnvironmentMergeObjectAndState(object.environmentState, state, ASEnvironmentStatePropagation::UP);
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});
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}
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template <typename ASEnvironmentStateType>
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void ASEnvironmentStateApply(id<ASEnvironment> object, ASEnvironmentStateType& state, ASEnvironmentStatePropagation propagate) {
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if (propagate == ASEnvironmentStatePropagation::DOWN) {
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ASEnvironmentStatePropagateUp(object, state);
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} else if (propagate == ASEnvironmentStatePropagation::UP) {
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ASEnvironmentStatePropagateDown(object, state);
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}
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}
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