mirror of
https://github.com/Swiftgram/Telegram-iOS.git
synced 2025-09-12 07:21:06 +00:00
9fdce828c1
- Add nullable for returning children - Store default child and children as properties - Use vector for creating final children
98 lines
3.2 KiB
Objective-C
98 lines
3.2 KiB
Objective-C
/*
|
|
* Copyright (c) 2014-present, Facebook, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This source code is licensed under the BSD-style license found in the
|
|
* LICENSE file in the root directory of this source tree. An additional grant
|
|
* of patent rights can be found in the PATENTS file in the same directory.
|
|
*
|
|
*/
|
|
|
|
#import <Foundation/Foundation.h>
|
|
|
|
#import "ASDimension.h"
|
|
#import "ASStackLayoutDefines.h"
|
|
#import "ASRelativeSize.h"
|
|
|
|
|
|
ASDISPLAYNODE_EXTERN_C_BEGIN
|
|
NS_ASSUME_NONNULL_BEGIN
|
|
|
|
static const int kMaxEnvironmentStateBoolExtensions = 1;
|
|
static const int kMaxEnvironmentStateIntegerExtensions = 4;
|
|
static const int kMaxEnvironmentStateEdgeInsetExtensions = 1;
|
|
|
|
#pragma mark -
|
|
|
|
typedef struct ASEnvironmentStateExtensions {
|
|
// Values to store extensions
|
|
BOOL boolExtensions[kMaxEnvironmentStateBoolExtensions];
|
|
NSInteger integerExtensions[kMaxEnvironmentStateIntegerExtensions];
|
|
UIEdgeInsets edgeInsetsExtensions[kMaxEnvironmentStateEdgeInsetExtensions];
|
|
} ASEnvironmentStateExtensions;
|
|
|
|
#pragma mark - ASEnvironmentLayoutOptionsState
|
|
|
|
typedef struct ASEnvironmentLayoutOptionsState {
|
|
CGFloat spacingBefore;// = 0;
|
|
CGFloat spacingAfter;// = 0;
|
|
BOOL flexGrow;// = NO;
|
|
BOOL flexShrink;// = NO;
|
|
ASRelativeDimension flexBasis;// = ASRelativeDimensionUnconstrained;
|
|
ASStackLayoutAlignSelf alignSelf;// = ASStackLayoutAlignSelfAuto;
|
|
CGFloat ascender;// = 0;
|
|
CGFloat descender;// = 0;
|
|
|
|
ASRelativeSizeRange sizeRange;// = ASRelativeSizeRangeMake(ASRelativeSizeMakeWithCGSize(CGSizeZero), ASRelativeSizeMakeWithCGSize(CGSizeZero));;
|
|
CGPoint layoutPosition;// = CGPointZero;
|
|
|
|
struct ASEnvironmentStateExtensions _extensions;
|
|
} ASEnvironmentLayoutOptionsState;
|
|
|
|
|
|
#pragma mark - ASEnvironmentHierarchyState
|
|
|
|
typedef struct ASEnvironmentHierarchyState {
|
|
unsigned rasterized:1; // = NO
|
|
unsigned rangeManaged:1; // = NO
|
|
unsigned transitioningSupernodes:1; // = NO
|
|
unsigned layoutPending:1; // = NO
|
|
} ASEnvironmentHierarchyState;
|
|
|
|
|
|
#pragma mark - ASEnvironmentState
|
|
|
|
typedef struct ASEnvironmentState {
|
|
struct ASEnvironmentHierarchyState hierarchyState;
|
|
struct ASEnvironmentLayoutOptionsState layoutOptionsState;
|
|
} ASEnvironmentState;
|
|
extern ASEnvironmentState ASEnvironmentStateMakeDefault();
|
|
|
|
ASDISPLAYNODE_EXTERN_C_END
|
|
|
|
|
|
#pragma mark - ASEnvironment
|
|
|
|
/**
|
|
* ASEnvironment allows objects that conform to the ASEnvironment protocol to be able to propagate specific States
|
|
* defined in an ASEnvironmentState up and down the ASEnvironment tree. To be able to define how merges of
|
|
* States should happen, specific merge functions can be provided
|
|
*/
|
|
@protocol ASEnvironment <NSObject>
|
|
|
|
/// The environment collection of an object which class conforms to the ASEnvironment protocol
|
|
- (ASEnvironmentState)environmentState;
|
|
- (void)setEnvironmentState:(ASEnvironmentState)environmentState;
|
|
|
|
/// Returns the parent of an object which class conforms to the ASEnvironment protocol
|
|
- (id<ASEnvironment> _Nullable)parent;
|
|
|
|
/// Returns all children of an object which class conforms to the ASEnvironment protocol
|
|
- (nullable NSArray<id<ASEnvironment>> *)children;
|
|
|
|
/// Classes should implement this method and return YES / NO dependent if upward propagation is enabled or not
|
|
- (BOOL)supportsUpwardPropagation;
|
|
|
|
@end
|
|
|
|
NS_ASSUME_NONNULL_END |