mirror of
https://github.com/Swiftgram/Telegram-iOS.git
synced 2025-09-09 22:20:41 +00:00
140 lines
3.9 KiB
Plaintext
140 lines
3.9 KiB
Plaintext
/*
|
|
* 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 "ASLayoutSpec.h"
|
|
|
|
#import "ASAssert.h"
|
|
#import "ASBaseDefines.h"
|
|
|
|
#import "ASInternalHelpers.h"
|
|
#import "ASLayout.h"
|
|
#import "ASLayoutOptions.h"
|
|
#import "ASLayoutOptionsPrivate.h"
|
|
|
|
#import <objc/runtime.h>
|
|
|
|
static NSString * const kDefaultChildKey = @"kDefaultChildKey";
|
|
static NSString * const kDefaultChildrenKey = @"kDefaultChildrenKey";
|
|
|
|
@interface ASLayoutSpec()
|
|
@property (nonatomic, strong) NSMutableDictionary *layoutChildren;
|
|
@end
|
|
|
|
@implementation ASLayoutSpec
|
|
|
|
@dynamic spacingAfter, spacingBefore, flexGrow, flexShrink, flexBasis, alignSelf, ascender, descender, sizeRange, layoutPosition, layoutOptions;
|
|
@synthesize layoutChildren = _layoutChildren;
|
|
|
|
- (instancetype)init
|
|
{
|
|
if (!(self = [super init])) {
|
|
return nil;
|
|
}
|
|
_layoutChildren = [NSMutableDictionary dictionary];
|
|
_isMutable = YES;
|
|
return self;
|
|
}
|
|
|
|
#pragma mark - Layout
|
|
|
|
- (ASLayout *)measureWithSizeRange:(ASSizeRange)constrainedSize
|
|
{
|
|
return [ASLayout layoutWithLayoutableObject:self size:constrainedSize.min];
|
|
}
|
|
|
|
- (id<ASLayoutable>)finalLayoutable
|
|
{
|
|
return self;
|
|
}
|
|
|
|
- (void)setChild:(id<ASLayoutable>)child;
|
|
{
|
|
[self setChild:child forIdentifier:kDefaultChildKey];
|
|
}
|
|
|
|
- (void)setChild:(id<ASLayoutable>)child forIdentifier:(NSString *)identifier
|
|
{
|
|
ASDisplayNodeAssert(self.isMutable, @"Cannot set properties when layout spec is not mutable");
|
|
ASLayoutOptions *layoutOptions = [ASLayoutSpec layoutOptionsForChild:child];
|
|
layoutOptions.isMutable = NO;
|
|
self.layoutChildren[identifier] = child;
|
|
}
|
|
|
|
- (void)setChildren:(NSArray *)children
|
|
{
|
|
ASDisplayNodeAssert(self.isMutable, @"Cannot set properties when layout spec is not mutable");
|
|
|
|
NSMutableArray *finalChildren = [NSMutableArray arrayWithCapacity:children.count];
|
|
for (id<ASLayoutable> child in children) {
|
|
ASLayoutOptions *layoutOptions = [ASLayoutSpec layoutOptionsForChild:child];
|
|
id<ASLayoutable> finalLayoutable = [child finalLayoutable];
|
|
layoutOptions.isMutable = NO;
|
|
|
|
if (finalLayoutable != child) {
|
|
ASLayoutOptions *finalLayoutOptions = [layoutOptions copy];
|
|
finalLayoutOptions.isMutable = NO;
|
|
[ASLayoutSpec associateLayoutOptions:finalLayoutOptions withChild:finalLayoutable];
|
|
[finalChildren addObject:finalLayoutable];
|
|
} else {
|
|
[finalChildren addObject:child];
|
|
}
|
|
}
|
|
|
|
self.layoutChildren[kDefaultChildrenKey] = [NSArray arrayWithArray:finalChildren];
|
|
}
|
|
|
|
- (id<ASLayoutable>)childForIdentifier:(NSString *)identifier
|
|
{
|
|
return self.layoutChildren[identifier];
|
|
}
|
|
|
|
- (id<ASLayoutable>)child
|
|
{
|
|
return self.layoutChildren[kDefaultChildKey];
|
|
}
|
|
|
|
- (NSArray *)children
|
|
{
|
|
return self.layoutChildren[kDefaultChildrenKey];
|
|
}
|
|
|
|
static Class gLayoutOptionsClass = [ASLayoutOptions class];
|
|
+ (void)setLayoutOptionsClass:(Class)layoutOptionsClass
|
|
{
|
|
gLayoutOptionsClass = layoutOptionsClass;
|
|
}
|
|
|
|
+ (ASLayoutOptions *)optionsForChild:(id<ASLayoutable>)child
|
|
{
|
|
ASLayoutOptions *layoutOptions = [[gLayoutOptionsClass alloc] init];;
|
|
[layoutOptions setValuesFromLayoutable:child];
|
|
layoutOptions.isMutable = NO;
|
|
return layoutOptions;
|
|
}
|
|
|
|
+ (void)associateLayoutOptions:(ASLayoutOptions *)layoutOptions withChild:(id<ASLayoutable>)child
|
|
{
|
|
objc_setAssociatedObject(child, @selector(setChild:), layoutOptions, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
|
|
}
|
|
|
|
+ (ASLayoutOptions *)layoutOptionsForChild:(id<ASLayoutable>)child
|
|
{
|
|
ASLayoutOptions *layoutOptions = objc_getAssociatedObject(child, @selector(setChild:));
|
|
if (layoutOptions == nil) {
|
|
layoutOptions = [self optionsForChild:child];
|
|
[self associateLayoutOptions:layoutOptions withChild:child];
|
|
}
|
|
return objc_getAssociatedObject(child, @selector(setChild:));
|
|
}
|
|
|
|
|
|
|
|
@end
|