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8cde594de3
[_ASHierarchyChangeSet] Oopsy daisy [ASDataController] Tweak our update validation [ASHierarchyChangeSet] Fix bugs Finish up some stuff [ASDataController] Put some stuff back [ASChangeSetDataController] Always use changeset [ASDataController] Put other stuff back [_ASHierarchyChangeSet] Use fast enumeration [_ASHierarchyChangeSet] Fix assertion format strings, return on fail so we don't crash in production [ASDataController] Store data source item counts as vector rather than NSArray [ASDataController] Build some tests for the update validation [ASDataController] Fix issues with update validation Get rid of new file [ASDataController] Suppress changeset validation before initial reload [ASDataController] Make invalid update log vs. exception publicly toggleable
146 lines
6.3 KiB
Objective-C
146 lines
6.3 KiB
Objective-C
//
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// ASDisplayNode+Beta.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 "ASContextTransitioning.h"
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#import "ASLayoutRangeType.h"
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NS_ASSUME_NONNULL_BEGIN
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ASDISPLAYNODE_EXTERN_C_BEGIN
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void ASPerformBlockOnMainThread(void (^block)());
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void ASPerformBlockOnBackgroundThread(void (^block)()); // DISPATCH_QUEUE_PRIORITY_DEFAULT
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ASDISPLAYNODE_EXTERN_C_END
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@interface ASDisplayNode (Beta)
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+ (BOOL)usesImplicitHierarchyManagement;
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+ (void)setUsesImplicitHierarchyManagement:(BOOL)enabled;
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/**
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* ASTableView and ASCollectionView now throw exceptions on invalid updates
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* like their UIKit counterparts. If YES, these classes will log messages
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* on invalid updates rather than throwing exceptions.
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*
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* Note that even if AsyncDisplayKit's exception is suppressed, the app may still crash
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* as it proceeds with an invalid update.
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*
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* This currently defaults to YES. In a future release it will default to NO and later
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* be removed entirely.
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*/
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+ (BOOL)suppressesInvalidCollectionUpdateExceptions;
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+ (void)setSuppressesInvalidCollectionUpdateExceptions:(BOOL)suppresses;
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/** @name Layout */
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/**
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* @abstract Recursively ensures node and all subnodes are displayed.
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* @see Full documentation in ASDisplayNode+FrameworkPrivate.h
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*/
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- (void)recursivelyEnsureDisplaySynchronously:(BOOL)synchronously;
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/**
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* @abstract allow modification of a context before the node's content is drawn
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*
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* @discussion Set the block to be called after the context has been created and before the node's content is drawn.
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* You can override this to modify the context before the content is drawn. You are responsible for saving and
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* restoring context if necessary. Restoring can be done in contextDidDisplayNodeContent
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* This block can be called from *any* thread and it is unsafe to access any UIKit main thread properties from it.
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*/
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@property (nonatomic, copy, nullable) ASDisplayNodeContextModifier willDisplayNodeContentWithRenderingContext;
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/**
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* @abstract allow modification of a context after the node's content is drawn
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*/
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@property (nonatomic, copy, nullable) ASDisplayNodeContextModifier didDisplayNodeContentWithRenderingContext;
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/** @name Layout Transitioning */
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@property (nonatomic) BOOL usesImplicitHierarchyManagement;
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/**
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* @discussion A place to perform your animation. New nodes have been inserted here. You can also use this time to re-order the hierarchy.
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*/
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- (void)animateLayoutTransition:(id<ASContextTransitioning>)context;
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/**
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* @discussion A place to clean up your nodes after the transition
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*/
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- (void)didCompleteLayoutTransition:(id<ASContextTransitioning>)context;
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/**
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* @abstract Transitions the current layout with a new constrained size. Must be called on main thread.
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*
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* @param animated Animation is optional, but will still proceed through your `animateLayoutTransition` implementation with `isAnimated == NO`.
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*
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* @param shouldMeasureAsync Measure the layout asynchronously.
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*
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* @param measurementCompletion Optional completion block called only if a new layout is calculated.
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* It is called on main, right after the measurement and before -animateLayoutTransition:.
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*
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* @discussion If the passed constrainedSize is the the same as the node's current constrained size, this method is noop.
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*
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* @see animateLayoutTransition:
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*/
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- (void)transitionLayoutWithSizeRange:(ASSizeRange)constrainedSize
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animated:(BOOL)animated
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shouldMeasureAsync:(BOOL)shouldMeasureAsync
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measurementCompletion:(nullable void(^)())completion;
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/**
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* @abstract Invalidates the current layout and begins a relayout of the node with the current `constrainedSize`. Must be called on main thread.
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*
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* @param animated Animation is optional, but will still proceed through your `animateLayoutTransition` implementation with `isAnimated == NO`.
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*
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* @param shouldMeasureAsync Measure the layout asynchronously.
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*
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* @param measurementCompletion Optional completion block called only if a new layout is calculated.
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* It is called right after the measurement and before -animateLayoutTransition:.
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*
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* @see animateLayoutTransition:
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*/
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- (void)transitionLayoutWithAnimation:(BOOL)animated
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shouldMeasureAsync:(BOOL)shouldMeasureAsync
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measurementCompletion:(nullable void(^)())completion;
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/**
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* @abstract Currently used by ASNetworkImageNode and ASMultiplexImageNode to allow their placeholders to stay if they are loading an image from the network.
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* Otherwise, a display pass is scheduled and completes, but does not actually draw anything - and ASDisplayNode considers the element finished.
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*/
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- (BOOL)placeholderShouldPersist;
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/**
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* @abstract Cancels all performing layout transitions. Can be called on any thread.
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*/
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- (void)cancelLayoutTransitionsInProgress;
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/**
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* @abstract Indicates that the receiver and all subnodes have finished displaying. May be called more than once, for example if the receiver has
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* a network image node. This is called after the first display pass even if network image nodes have not downloaded anything (text would be done,
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* and other nodes that are ready to do their final display). Each render of every progressive jpeg network node would cause this to be called, so
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* this hook could be called up to 1 + (pJPEGcount * pJPEGrenderCount) times. The render count depends on how many times the downloader calls the
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* progressImage block.
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*/
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- (void)hierarchyDisplayDidFinish;
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/**
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* Only ASLayoutRangeModeVisibleOnly or ASLayoutRangeModeLowMemory are recommended. Default is ASLayoutRangeModeVisibleOnly,
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* because this is the only way to ensure an application will not have blank / flashing views as the user navigates back after
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* a memory warning. Apps that wish to use the more effective / aggressive ASLayoutRangeModeLowMemory may need to take steps
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* to mitigate this behavior, including: restoring a larger range mode to the next controller before the user navigates there,
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* enabling .neverShowPlaceholders on ASCellNodes so that the navigation operation is blocked on redisplay completing, etc.
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*/
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+ (void)setRangeModeForMemoryWarnings:(ASLayoutRangeMode)rangeMode;
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@end
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NS_ASSUME_NONNULL_END
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