@class NSDate, PXScrollViewController, PXMemoriesSpec, PXMemoriesFeedDataSourceManager, PXMemoriesSpecManager, PXSectionedObjectReference, PXTilingController, PXMemoriesFeedTransitionAnimationCoordinator, PXExtendedTraitCollection, PXMemoriesFeedTilingLayout, NSString, PHPhotoLibrary, PXMemoriesFeedScrollFilter, PXSectionedLayoutEngine, PXSectionedSelectionManager;
@protocol PXMemoriesFeedViewControllerHelperDelegate, PXViewControllerEventTracker;
@interface PXMemoriesFeedViewControllerHelper : PXObservable <PXSectionedDataSourceManagerObserver, PXSectionedLayoutEngineDelegate, PXMemoriesFeedScrollFilterDelegate, PXTilingControllerScrollDelegate, PXTilingControllerTransitionDelegate, PXMemoriesFeedTilingLayoutDelegate> {
struct { BOOL layoutEngine; } _needsToUpdate;
struct { BOOL feedIsVisible; BOOL reloadedTileKindsOnObjectChanged; BOOL configureMetrics; } _delegateRespondsTo;
id _refreshResetNotification;
BOOL _hasAppeared;
BOOL _hasKickedOffBatchGeneration;
}
@property (readonly, nonatomic) id<PXViewControllerEventTracker> eventTracker;
@property (retain, nonatomic, setter=_setLastUserMemoryGenerationRequestDate:) NSDate *_lastUserMemoryGenerationRequestDate;
@property (retain, nonatomic, setter=_setMemoryReferenceToScrollToVisible:) PXSectionedObjectReference *_memoryReferenceToScrollToVisible;
@property (retain, nonatomic, setter=_setAnchorMemoryReference:) PXSectionedObjectReference *anchorMemoryReference;
@property (nonatomic, setter=_setAnchorMemoryOrigin:) struct CGPoint { double x; double y; } anchorMemoryOrigin;
@property (readonly, nonatomic) PXSectionedLayoutEngine *_layoutEngine;
@property (readonly, nonatomic) PXMemoriesFeedScrollFilter *_scrollFilter;
@property (retain, nonatomic, setter=_setSpec:) PXMemoriesSpec *_spec;
@property (readonly, nonatomic) PXMemoriesFeedTransitionAnimationCoordinator *_transitionAnimationCoordinator;
@property (nonatomic, setter=_setRefreshRetryCount:) long long _refreshRetryCount;
@property (nonatomic, getter=_isRequestingNewMemories, setter=_setRequestingNewMemories:) BOOL _requestingNewMemories;
@property (copy, nonatomic, setter=_setNewMemoriesRequestCompletion:) id /* block */ _newMemoriesRequestCompletion;
@property (readonly, nonatomic) PXTilingController *tilingController;
@property (readonly, nonatomic) PXMemoriesFeedDataSourceManager *dataSourceManager;
@property (readonly, nonatomic) PXMemoriesSpecManager *specManager;
@property (readonly, nonatomic) PXSectionedSelectionManager *selectionManager;
@property (readonly, nonatomic) PHPhotoLibrary *photoLibrary;
@property (readonly, nonatomic) PXScrollViewController *scrollViewController;
@property (readonly, nonatomic) PXExtendedTraitCollection *traitCollection;
@property (weak, nonatomic) id<PXMemoriesFeedViewControllerHelperDelegate> delegate;
@property (readonly, nonatomic) PXMemoriesFeedTilingLayout *currentLayout;
@property (readonly, nonatomic) PXMemoriesFeedTilingLayout *targetLayout;
@property (retain, nonatomic) PXSectionedObjectReference *highlightedMemoryReference;
@property (retain, nonatomic) PXSectionedObjectReference *activatedMemoryReference;
@property (retain, nonatomic) PXSectionedObjectReference *lastActionPresentationMemoryReference;
@property (retain, nonatomic, setter=setScrollTargetMemoryUUID:) NSString *scrollTargetMemoryUUID;
@property (readonly) unsigned long long hash;
@property (readonly) Class superclass;
@property (readonly, copy) NSString *description;
@property (readonly, copy) NSString *debugDescription;
- (void)_configureLayout:(id)a0;
- (void)observable:(id)a0 didChange:(unsigned long long)a1 context:(void *)a2;
- (id)sectionedDataSourceManagerInterestingObjectReferences:(id)a0;
- (BOOL)_needsUpdate;
- (id)mutableChangeObject;
- (void)_handleDataSourceChange;
- (void)_updateIfNeeded;
- (id)initWithPhotoLibrary:(id)a0;
- (void).cxx_destruct;
- (void)prepare;
- (id)_memoryReferenceInsertedOnChangeToDataSource:(id)a0 withChangeDetails:(id)a1;
- (void)didChangeTilingControllerLayout;
- (void)feedViewControllerDidDisappear:(id)a0;
- (BOOL)canRequestNewMemoriesForReason:(unsigned long long)a0;
- (void)_configureMetrics:(id)a0;
- (void)_enumerateInsertedItemsInChangeDetails:(id)a0 withDataSource:(id)a1 usingBlock:(id /* block */)a2;
- (void)_handleChangeFromDataSource:(id)a0 toDataSource:(id)a1 withChangeDetails:(id)a2;
- (void)_handleFinishedRequestingNewMemoriesWithSuccess:(BOOL)a0 reason:(unsigned long long)a1 error:(id)a2;
- (void)_handleNewLayoutSnapshot:(id)a0;
- (void)_handleRefreshCompletionWithResultInformation:(id)a0 reason:(unsigned long long)a1 error:(id)a2;
- (void)_handleTraitCollectionChange:(unsigned long long)a0;
- (void)_invalidateLayoutEngine;
- (void)_scrollToTargetMemoryUUIDWhenReady:(id)a0;
- (void)_startRefreshForReason:(unsigned long long)a0;
- (void)_updateHighlightedIndexPathInLayout;
- (void)_updateHighlightedIndexPathInLayout:(id)a0;
- (void)_updateLayoutEngineIfNeeded;
- (void)_updateSelectedIndexPathsInLayout;
- (void)_updateSelectedIndexPathsInLayout:(id)a0;
- (BOOL)canRequestNewMemories;
- (void)feedViewControllerDidAppear:(id)a0 shouldUpdateNotifications:(BOOL)a1;
- (void)feedViewControllerWillLayoutSubviews;
- (struct PXSimpleIndexPath { long long x0; long long x1; long long x2; long long x3; })indexPathForMemoryInScrollViewAtPoint:(struct CGPoint { double x0; double x1; })a0;
- (struct PXSimpleIndexPath { long long x0; long long x1; long long x2; long long x3; })indexPathForMemoryObjectReference:(id)a0;
- (id)initWithScrollViewController:(id)a0 photoLibrary:(id)a1 traitCollection:(id)a2 memoriesStyle:(unsigned long long)a3 tilingControllerConfigurationBlock:(id /* block */)a4;
- (id)initWithScrollViewController:(id)a0 photoLibrary:(id)a1 traitCollection:(id)a2 tilingControllerConfigurationBlock:(id /* block */)a3;
- (void)invalidateMetrics;
- (void)layoutEngine:(id)a0 willGenerateLayoutWithGenerator:(id)a1 forSection:(unsigned long long)a2;
- (void)layoutEngineDidUpdateLayoutSnapshot:(id)a0;
- (struct CGRect { struct CGPoint { double x0; double x1; } x0; struct CGSize { double x0; double x1; } x1; })memoriesFeedTilingLayout:(id)a0 contentsRectForItemAtIndexPath:(struct PXSimpleIndexPath { long long x0; long long x1; long long x2; long long x3; })a1 forAspectRatio:(double)a2;
- (id)memoriesFeedTilingLayout:(id)a0 titleFontNameForItemAtIndexPath:(struct PXSimpleIndexPath { long long x0; long long x1; long long x2; long long x3; })a1;
- (id)memoryInfoAtIndexPath:(struct PXSimpleIndexPath { long long x0; long long x1; long long x2; long long x3; })a0;
- (id)memoryInfoForMemoryObjectReference:(id)a0;
- (id)memoryInfoInScrollViewAtPoint:(struct CGPoint { double x0; double x1; })a0;
- (id)memoryObjectReferenceInScrollViewAtPoint:(struct CGPoint { double x0; double x1; })a0;
- (void)requestNewMemoriesForReason:(unsigned long long)a0 withCompletion:(id /* block */)a1;
- (void)requestNewMemoriesWithCompletion:(id /* block */)a0;
- (void)saveAnchorMemory;
- (void)scrollFilterShouldRequestAdditionalContent:(id)a0;
- (void)scrollMemoryReferenceToVisible:(id)a0 animated:(BOOL)a1;
- (struct CGPoint { double x0; double x1; })tilingController:(id)a0 initialVisibleOriginForLayout:(id)a1;
- (void)tilingController:(id)a0 prepareForChange:(id)a1;
- (struct CGPoint { double x0; double x1; })tilingController:(id)a0 targetVisibleOriginForLayout:(id)a1 proposedVisibleOrigin:(struct CGPoint { double x0; double x1; })a2;
- (id)tilingController:(id)a0 tileIdentifierConverterForChange:(id)a1;
- (id)tilingController:(id)a0 transitionAnimationCoordinatorForChange:(id)a1;
@end