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Code Issues 95 Packages Projects Releases 10 Wiki Activity

add "updatedItemIdentifiers" utility to ListSnapshot

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John Estropia
2019-12-02 10:52:36 +09:00
parent b12dba4d15
commit 6f275eb63a
4 changed files with 24 additions and 55 deletions
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39
Sources/Internals.DiffableDataSourceSnapshot.swift
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@@ -96,6 +96,11 @@ extension Internals {
return self.structure.allItemIDs
}
var updatedItemIdentifiers: Set<NSManagedObjectID> {
return self.structure.reloadedItems
}
func numberOfItems(inSection identifier: String) -> Int {
return self.itemIdentifiers(inSection: identifier).count
@@ -121,16 +126,6 @@ extension Internals {
return self.structure.allSectionIDs.firstIndex(of: identifier)
}
func isReloaded(sectionID: String) -> Bool? {
return self.structure.isReloaded(sectionID: sectionID)
}
func isReloaded(itemID: NSManagedObjectID) -> Bool? {
return self.structure.isReloaded(itemID: itemID)
}
mutating func appendItems(_ identifiers: [NSManagedObjectID], toSection sectionIdentifier: String?) {
self.structure.append(itemIDs: identifiers, to: sectionIdentifier)
@@ -282,10 +277,12 @@ extension Internals {
// MARK: Internal
var sections: [Section]
private(set) var reloadedItems: Set<NSManagedObjectID>
init() {
self.sections = []
self.reloadedItems = []
}
init(sections: [NSFetchedResultsSectionInfo], fetchOffset: Int, fetchLimit: Int?) {
@@ -327,6 +324,7 @@ extension Internals {
)
}
self.sections = newSections
self.reloadedItems = []
}
var allSectionIDs: [String] {
@@ -339,24 +337,6 @@ extension Internals {
return self.sections.lazy.flatMap({ $0.elements }).map({ $0.differenceIdentifier })
}
func isReloaded(sectionID: String) -> Bool? {
return self.sections.first(where: { $0.differenceIdentifier == sectionID })?.isReloaded
}
func isReloaded(itemID: NSManagedObjectID) -> Bool? {
for section in self.sections {
guard let item = section.elements.first(where: { $0.differenceIdentifier == itemID }) else {
return nil
}
return item.isReloaded
}
return nil
}
func items(in sectionID: String) -> [NSManagedObjectID] {
guard let sectionIndex = self.sectionIndex(of: sectionID) else {
@@ -488,6 +468,7 @@ extension Internals {
mutating func update<S: Sequence>(itemIDs: S) where S.Element == NSManagedObjectID {
let itemPositionMap = self.itemPositionMap()
var newItemIDs: Set<NSManagedObjectID> = []
for itemID in itemIDs {
guard let itemPosition = itemPositionMap[itemID] else {
@@ -496,7 +477,9 @@ extension Internals {
}
self.sections[itemPosition.sectionIndex]
.elements[itemPosition.itemRelativeIndex].isReloaded = true
newItemIDs.insert(itemID)
}
self.reloadedItems.formUnion(newItemIDs)
}
mutating func append(sectionIDs: [String]) {