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https://github.com/status-im/react-native.git
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02db374e50
Summary: Remove layout-only views. Works by checking properties against a list of known properties that only affect layout. The `RCTShadowView` hierarchy still has a 1:1 correlation with the JS nodes. This works by adjusting the tags and indices in `manageChildren`. For example, if JS told us to insert tag 1 at index 0 and tag 1 is layout-only with children whose tags are 2 and 3, we adjust it so we insert tags 2 and 3 at indices 0 and 1. This keeps changes out of `RCTView` and `RCTScrollView`. In order to simplify this logic, view moves are now processed as view removals followed by additions. A move from index 0 to 1 is recorded as a removal of view at indices 0 and 1 and an insertion of tags 1 and 2 at indices 0 and 1. Of course, the remaining indices have to be offset to take account for this. The `collapsible` attribute is a bit of a hack to force `RCTScrollView` to always have one child. This was easier than rethinking out the logic there, but we could change this later.
43 lines
1.4 KiB
Objective-C
43 lines
1.4 KiB
Objective-C
/**
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* Copyright (c) 2015-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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* Logical node in a tree of application components. Both `ShadowView`s and
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* `UIView+React`s conform to this. Allows us to write utilities that
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* reason about trees generally.
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*/
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@protocol RCTViewNodeProtocol <NSObject>
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@property (nonatomic, copy) NSNumber *reactTag;
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@property (nonatomic, assign) CGRect frame;
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- (void)insertReactSubview:(id<RCTViewNodeProtocol>)subview atIndex:(NSInteger)atIndex;
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- (void)removeReactSubview:(id<RCTViewNodeProtocol>)subview;
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- (NSArray *)reactSubviews;
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- (id<RCTViewNodeProtocol>)reactSuperview;
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- (NSNumber *)reactTagAtPoint:(CGPoint)point;
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// View/ShadowView is a root view
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- (BOOL)isReactRootView;
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@optional
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// TODO: Deprecate this
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// This method is called after layout has been performed for all views known
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// to the RCTViewManager. It is only called on UIViews, not shadow views.
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- (void)reactBridgeDidFinishTransaction;
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@end
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// TODO: this is kinda dumb - let's come up with a
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// better way of identifying root React views please!
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static inline BOOL RCTIsReactRootView(NSNumber *reactTag) {
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return reactTag.integerValue % 10 == 1;
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}
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