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7551627b58
* [Layout API] Rename ASLayoutable to ASLayoutElement * arg * fix wrapperWithLayoutElement * [Layout API] Rename ASLayoutable to ASLayoutElement * arg * address Michael's comments * Remove ASLayoutValidation files that were deleted on master since this diff was created.
96 lines
3.3 KiB
Objective-C
96 lines
3.3 KiB
Objective-C
//
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// ASLayoutElementPrivate.h
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// AsyncDisplayKit
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//
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// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
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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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#import "ASDimension.h"
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@protocol ASLayoutElement;
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@class ASLayoutElementStyle;
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struct ASLayoutElementContext {
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int32_t transitionID;
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BOOL needsVisualizeNode;
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};
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extern int32_t const ASLayoutElementContextInvalidTransitionID;
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extern int32_t const ASLayoutElementContextDefaultTransitionID;
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extern struct ASLayoutElementContext const ASLayoutElementContextNull;
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extern BOOL ASLayoutElementContextIsNull(struct ASLayoutElementContext context);
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extern struct ASLayoutElementContext ASLayoutElementContextMake(int32_t transitionID, BOOL needsVisualizeNode);
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extern void ASLayoutElementSetCurrentContext(struct ASLayoutElementContext context);
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extern struct ASLayoutElementContext ASLayoutElementGetCurrentContext();
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extern void ASLayoutElementClearCurrentContext();
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/**
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* The base protocol for ASLayoutElement. Generally the methods/properties in this class do not need to be
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* called by the end user and are only called internally. However, there may be a case where the methods are useful.
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*/
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@protocol ASLayoutElementPrivate <NSObject>
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/**
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* @abstract This method can be used to give the user a chance to wrap an ASLayoutElement in an ASLayoutSpec
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* just before it is added to a parent ASLayoutSpec. For example, if you wanted an ASTextNode that was always
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* inside of an ASInsetLayoutSpec, you could subclass ASTextNode and implement finalLayoutElement so that it wraps
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* itself in an inset spec.
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*
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* Note that any ASLayoutElement other than self that is returned MUST set isFinalLayoutElement to YES. Make sure
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* to do this BEFORE adding a child to the ASLayoutElement.
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*
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* @return The layoutElement that will be added to the parent layout spec. Defaults to self.
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*/
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- (id<ASLayoutElement>)finalLayoutElement;
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/**
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* A flag to indicate that this ASLayoutElement was created in finalLayoutElement. This MUST be set to YES
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* before adding a child to this layoutElement.
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*/
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@property (nonatomic, assign) BOOL isFinalLayoutElement;
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@end
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#pragma mark - ASLayoutElementExtensibility
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#define ASEnvironmentLayoutExtensibilityForwarding \
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- (void)setLayoutOptionExtensionBool:(BOOL)value atIndex:(int)idx\
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{\
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_ASEnvironmentLayoutOptionsExtensionSetBoolAtIndex(self, idx, value);\
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}\
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\
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- (BOOL)layoutOptionExtensionBoolAtIndex:(int)idx\
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{\
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return _ASEnvironmentLayoutOptionsExtensionGetBoolAtIndex(self, idx);\
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}\
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\
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- (void)setLayoutOptionExtensionInteger:(NSInteger)value atIndex:(int)idx\
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{\
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_ASEnvironmentLayoutOptionsExtensionSetIntegerAtIndex(self, idx, value);\
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}\
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\
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- (NSInteger)layoutOptionExtensionIntegerAtIndex:(int)idx\
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{\
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return _ASEnvironmentLayoutOptionsExtensionGetIntegerAtIndex(self, idx);\
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}\
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\
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- (void)setLayoutOptionExtensionEdgeInsets:(UIEdgeInsets)value atIndex:(int)idx\
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{\
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_ASEnvironmentLayoutOptionsExtensionSetEdgeInsetsAtIndex(self, idx, value);\
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}\
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\
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- (UIEdgeInsets)layoutOptionExtensionEdgeInsetsAtIndex:(int)idx\
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{\
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return _ASEnvironmentLayoutOptionsExtensionGetEdgeInsetsAtIndex(self, idx);\
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}\
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