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This experiment makes sure a ASCollectionView's `rangeController` updates when a changeset WITH updates is applied. Currently it is possible for nodes inserted into the preload range to not get preloaded when performing a batch update. For example, suppose a collection node has: - Tuning parameters with a preload range of 1 screenful for the given range mode. - Nodes A and B where A is visible and B is off screen. Currently if node B is deleted and a new node C is inserted in its place, node C will not get preloaded until the collection node is scrolled. This is because the preloading mechanism relies on a `setNeedsUpdate` call on the range controller as part of the `-collectionView:willDisplayCell:forItemAtIndexPath:` delegate method when the batch update is submitted. However, in the example outlined above, this sometimes doesn't happen automtically, causing the range update to be delayed until the next the view scrolls.
44 lines
2.3 KiB
Objective-C
44 lines
2.3 KiB
Objective-C
//
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// ASExperimentalFeatures.h
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// Texture
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//
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// Copyright (c) Pinterest, Inc. All rights reserved.
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// Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
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//
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#import <Foundation/Foundation.h>
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#import <AsyncDisplayKit/ASAvailability.h>
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#import <AsyncDisplayKit/ASBaseDefines.h>
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NS_ASSUME_NONNULL_BEGIN
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/**
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* A bit mask of features. Make sure to update configuration.json when you add entries.
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*/
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typedef NS_OPTIONS(NSUInteger, ASExperimentalFeatures) {
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// If AS_ENABLE_TEXTNODE=0 or TextNode2 subspec is used this setting is a no op and ASTextNode2
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// will be used in all cases
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ASExperimentalTextNode = 1 << 0, // exp_text_node
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ASExperimentalInterfaceStateCoalescing = 1 << 1, // exp_interface_state_coalesce
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ASExperimentalLayerDefaults = 1 << 2, // exp_infer_layer_defaults
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ASExperimentalCollectionTeardown = 1 << 3, // exp_collection_teardown
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ASExperimentalFramesetterCache = 1 << 4, // exp_framesetter_cache
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ASExperimentalSkipClearData = 1 << 5, // exp_skip_clear_data
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ASExperimentalDidEnterPreloadSkipASMLayout = 1 << 6, // exp_did_enter_preload_skip_asm_layout
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ASExperimentalDispatchApply = 1 << 7, // exp_dispatch_apply
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ASExperimentalDrawingGlobal = 1 << 8, // exp_drawing_global
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ASExperimentalOptimizeDataControllerPipeline = 1 << 9, // exp_optimize_data_controller_pipeline
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ASExperimentalDisableGlobalTextkitLock = 1 << 10, // exp_disable_global_textkit_lock
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ASExperimentalMainThreadOnlyDataController = 1 << 11, // exp_main_thread_only_data_controller
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ASExperimentalRangeUpdateOnChangesetUpdate = 1 << 12, // exp_range_update_on_changeset_update
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ASExperimentalFeatureAll = 0xFFFFFFFF
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};
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/// Convert flags -> name array.
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ASDK_EXTERN NSArray<NSString *> *ASExperimentalFeaturesGetNames(ASExperimentalFeatures flags);
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/// Convert name array -> flags.
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ASDK_EXTERN ASExperimentalFeatures ASExperimentalFeaturesFromArray(NSArray<NSString *> *array);
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NS_ASSUME_NONNULL_END
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