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* Initial ASLayoutSpecPlayground commit * Initial exploratory stab at the main challenge of the app - visualizing ASLayoutSpecs * Halfway through moving debug features out of ASDK framework files and into debug files. Project builds. * [ASLayoutSpecPlayground] Created new Inspector node, cleaning up internal implementation to start formalizing support for layout spec visualization. * Workaround for ensuring creation of visualizerNode for ALL layoutspecs * continued development * Layout Inspector Work in Progress * Resizing the playground works in the shrink direction, not for grow. * added new ASLayoutableInspectorNode features * Cleaned up examples code. * Cleaning up code. * more code cleanup * [ASLayoutableInspector] Transition to an ASTableNode-based architecture to support larger numbers of buttons / customizable types. * [ASLayoutableInspector] Support different layoutable property types to set up buttons that can edit all of them. * Huy debugging * Refactored layout inspector code for extensibility. * Properly lock layoutableContextMap * Fix context handling in ASDisplayNode:measureWithSizeRange * Fix ASLayoutSpecPlayground:ViewController:toggleVisualization * added slider to InspectorCell * [ASLayoutSpecPlayground] Improvements to propagation of visualize mode, resize handle, minor cleanup. * Fix to ASEnvironment * [ASLayoutSpecPlayground] Fix a few minor issues from the merge with latest master. * Implement layout spec cache * add pager ndoe * add more examples * add more layout examples * [ASLayoutPlayground] Fix merge issues * [ASLayoutPlayground] Fix up the example project from the 2.0 API changes. * [ASLayoutPlayground] Some fixes (#2411) * [ASLayoutPlayground]: Some fixes * Fixed crash when tapping descender. * Fixed setting the item to inspect. * Fixed button states in inspector node. * Added sliders for spacingBefore, spacingAfter, ascender. * [ASLayoutSpecPlayground] Deselect the buttons when editing is over. * [ASLayoutSpecPlayground] Changed flexGrow/Shrink's values from YES/NO to 1.0/0.0 * [Project] Create new Debug/ directory for advanced tools dedicated to debugging. * [LayoutSpecPlayground] Rename project without AS in title, to be consistent with LayoutSpecExamples. * [Bulid] Fix Xcode project to use new Debug subdirectory / group. * [Bulid] Fix a small merge error. * [Build] Fix build issue for Framework target. * [Bulid] Fix podspec to expose InspectorNode header; Remove old-cocoapods emojis from ASDKgram :) * Move aside ASLayoutSpecPlayground-Swift to match master * [LayoutSpecPlayground] Cleanup implementation in several files, xcodeproj, etc. * [ASControlNode] Add comment for new assertion, to be enabled in a separate diff.
119 lines
4.4 KiB
Objective-C
119 lines
4.4 KiB
Objective-C
//
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// ASLayoutSpec.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 <AsyncDisplayKit/ASLayoutElement.h>
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#import <AsyncDisplayKit/ASAsciiArtBoxCreator.h>
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NS_ASSUME_NONNULL_BEGIN
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/**
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* A layout spec is an immutable object that describes a layout, loosely inspired by React.
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*/
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@interface ASLayoutSpec : NSObject <ASLayoutElement>
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/**
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* Creation of a layout spec should only happen by a user in layoutSpecThatFits:. During that method, a
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* layout spec can be created and mutated. Once it is passed back to ASDK, the isMutable flag will be
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* set to NO and any further mutations will cause an assert.
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*/
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@property (nonatomic, assign) BOOL isMutable;
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/**
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* Parent of the layout spec
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*/
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@property (nullable, nonatomic, weak) id<ASLayoutElement> parent;
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/**
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* Adds a child to this layout spec using a default identifier.
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*
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* @param child A child to be added.
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*
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* @discussion Every ASLayoutSpec must act on at least one child. The ASLayoutSpec base class takes the
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* responsibility of holding on to the spec children. Some layout specs, like ASInsetLayoutSpec,
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* only require a single child.
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*
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* For layout specs that require a known number of children (ASBackgroundLayoutSpec, for example)
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* a subclass should use this method to set the "primary" child. It can then use setChild:forIdentifier:
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* to set any other required children. Ideally a subclass would hide this from the user, and use the
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* setChild:forIdentifier: internally. For example, ASBackgroundLayoutSpec exposes a backgroundChild
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* property that behind the scenes is calling setChild:forIdentifier:.
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*/
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@property (nullable, strong, nonatomic) id<ASLayoutElement> child;
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/**
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* Adds childen to this layout spec.
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*
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* @param children An array of ASLayoutElement children to be added.
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*
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* @discussion Every ASLayoutSpec must act on at least one child. The ASLayoutSpec base class takes the
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* reponsibility of holding on to the spec children. Some layout specs, like ASStackLayoutSpec,
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* can take an unknown number of children. In this case, the this method should be used.
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* For good measure, in these layout specs it probably makes sense to define
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* setChild: and setChild:forIdentifier: methods to do something appropriate or to assert.
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*/
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@property (nullable, strong, nonatomic) NSArray<id<ASLayoutElement>> *children;
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@property (nonatomic, assign) BOOL shouldVisualize;
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@property (nonatomic, assign) BOOL neverShouldVisualize;
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- (void)recursivelySetShouldVisualize:(BOOL)visualize;
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@end
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/**
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* An ASLayoutSpec subclass that can wrap one or more ASLayoutElement and calculates the layout based on the
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* sizes of the children. If multiple children are provided the size of the biggest child will be used to for
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* size of this layout spec.
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*/
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@interface ASWrapperLayoutSpec : ASLayoutSpec
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/*
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* Returns an ASWrapperLayoutSpec object with the given layoutElement as child.
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*/
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+ (instancetype)wrapperWithLayoutElement:(id<ASLayoutElement>)layoutElement AS_WARN_UNUSED_RESULT;
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/*
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* Returns an ASWrapperLayoutSpec object with the given layoutElements as children.
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*/
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+ (instancetype)wrapperWithLayoutElements:(NSArray<id<ASLayoutElement>> *)layoutElements AS_WARN_UNUSED_RESULT;
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/*
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* Returns an ASWrapperLayoutSpec object initialized with the given layoutElement as child.
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*/
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- (instancetype)initWithLayoutElement:(id<ASLayoutElement>)layoutElement AS_WARN_UNUSED_RESULT;
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/*
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* Returns an ASWrapperLayoutSpec object initialized with the given layoutElements as children.
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*/
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- (instancetype)initWithLayoutElements:(NSArray<id<ASLayoutElement>> *)layoutElements AS_WARN_UNUSED_RESULT;
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/*
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* Init not available for ASWrapperLayoutSpec
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*/
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- (instancetype)init __unavailable;
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@end
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@interface ASLayoutSpec (Debugging) <ASLayoutElementAsciiArtProtocol>
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/**
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* Used by other layout specs to create ascii art debug strings
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*/
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+ (NSString *)asciiArtStringForChildren:(NSArray *)children parentName:(NSString *)parentName direction:(ASStackLayoutDirection)direction;
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+ (NSString *)asciiArtStringForChildren:(NSArray *)children parentName:(NSString *)parentName;
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@end
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@interface ASLayoutSpec (Deprecated)
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ASLayoutElementStyleForwardingDeclaration
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@end
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NS_ASSUME_NONNULL_END
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