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[ASLayoutSpec.mm] Remove use of dictionary to hold children

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Converted the backing store of children to a std::vector. Subclass now have defined indexes instead of string keys to add children.
This commit is contained in:
ricky
2016-06-07 10:07:59 -07:00
parent 6dac29a16f
commit 2675204d50
4 changed files with 41 additions and 56 deletions
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16
AsyncDisplayKit/Layout/ASLayoutSpec.h
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@@ -52,19 +52,19 @@ NS_ASSUME_NONNULL_BEGIN
*
* @param child A child to be added.
*
* @param identifier An identifier associated with the child.
* @param index An index associated with the child.
*
* @discussion Every ASLayoutSpec must act on at least one child. The ASLayoutSpec base class takes the
* responsibility of holding on to the spec children. Some layout specs, like ASInsetLayoutSpec,
* only require a single child.
*
* For layout specs that require a known number of children (ASBackgroundLayoutSpec, for example)
* a subclass should use the setChild method to set the "primary" child. It can then use this method
* a subclass can use the setChild method to set the "primary" child. It should then use this method
* to set any other required children. Ideally a subclass would hide this from the user, and use the
* setChild:forIdentifier: internally. For example, ASBackgroundLayoutSpec exposes a backgroundChild
* property that behind the scenes is calling setChild:forIdentifier:.
* setChild:forIndex: internally. For example, ASBackgroundLayoutSpec exposes a backgroundChild
* property that behind the scenes is calling setChild:forIndex:.
*/
- (void)setChild:(id<ASLayoutable>)child forIdentifier:(NSString *)identifier;
- (void)setChild:(id<ASLayoutable>)child forIndex:(NSUInteger)index;
/**
* Adds childen to this layout spec.
@@ -94,11 +94,11 @@ NS_ASSUME_NONNULL_BEGIN
- (nullable id<ASLayoutable>)child;
/**
* Returns the child added to this layout spec using the given identifier.
* Returns the child added to this layout spec using the given index.
*
* @param identifier An identifier associated withe the child.
* @param index An identifier associated withe the child.
*/
- (nullable id<ASLayoutable>)childForIdentifier:(NSString *)identifier;
- (nullable id<ASLayoutable>)childForIndex:(NSUInteger)index;
/**
* Returns all children added to this layout spec.