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Code Issues 95 Packages Projects Releases 10 Wiki Activity

DiffableDataSource.CollectionView implementation

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This commit is contained in:
John Estropia
2019-10-16 14:01:25 +09:00
parent 7932625644
commit 64a0264354
14 changed files with 383 additions and 90 deletions
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52
Sources/ObjectMonitor.swift
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@@ -40,7 +40,7 @@ import CoreData
Observers registered via `addObserver(_:)` are not retained. `ObjectMonitor` only keeps a `weak` reference to all observers, thus keeping itself free from retain-cycles.
*/
@available(macOS 10.12, *)
public final class ObjectMonitor<D: DynamicObject>: ObjectRepresentation, Equatable {
public final class ObjectMonitor<O: DynamicObject>: ObjectRepresentation, Equatable {
/**
Returns the `DynamicObject` instance being observed, or `nil` if the object was already deleted.
@@ -122,35 +122,35 @@ public final class ObjectMonitor<D: DynamicObject>: ObjectRepresentation, Equata
// MARK: ObjectRepresentation
public func objectID() -> D.ObjectID {
public func objectID() -> O.ObjectID {
return self.id
}
public func asLiveObject(in dataStack: DataStack) -> LiveObject<D>? {
public func asLiveObject(in dataStack: DataStack) -> LiveObject<O>? {
let context = dataStack.unsafeContext()
return .init(objectID: self.id, context: context)
}
public func asEditable(in transaction: BaseDataTransaction) -> D? {
public func asEditable(in transaction: BaseDataTransaction) -> O? {
return self.context.fetchExisting(self.id)
}
public func asSnapshot(in dataStack: DataStack) -> ObjectSnapshot<D>? {
public func asSnapshot(in dataStack: DataStack) -> ObjectSnapshot<O>? {
let context = dataStack.unsafeContext()
return .init(id: self.id, context: context)
return .init(objectID: self.id, context: context)
}
public func asSnapshot(in transaction: BaseDataTransaction) -> ObjectSnapshot<D>? {
public func asSnapshot(in transaction: BaseDataTransaction) -> ObjectSnapshot<O>? {
let context = transaction.unsafeContext()
return .init(id: self.id, context: context)
return .init(objectID: self.id, context: context)
}
public func asObjectMonitor(in dataStack: DataStack) -> ObjectMonitor<D>? {
public func asObjectMonitor(in dataStack: DataStack) -> ObjectMonitor<O>? {
let context = dataStack.unsafeContext()
if self.context == context {
@@ -160,31 +160,6 @@ public final class ObjectMonitor<D: DynamicObject>: ObjectRepresentation, Equata
return .init(objectID: self.id, context: dataStack.unsafeContext())
}
public typealias ObjectType = D
public static func cs_fromRaw(object: NSManagedObject) -> Self {
return self.init(
context: object.managedObjectContext!,
objectID: object.objectID
)
}
public func cs_id() -> ObjectType.ObjectID {
return self.objectID
}
public func cs_object() -> D? {
return self.object
}
public func cs_rawObject(in context: NSManagedObjectContext) -> NSManagedObject? {
return context.fetchExisting(self.objectID)
}
// MARK: Equatable
@@ -238,7 +213,7 @@ public final class ObjectMonitor<D: DynamicObject>: ObjectRepresentation, Equata
let fetchedResultsControllerDelegate = Internals.FetchedResultsControllerDelegate()
self.objectID = objectID
self.id = objectID
self.fetchedResultsController = fetchedResultsController
self.fetchedResultsControllerDelegate = fetchedResultsControllerDelegate
@@ -331,7 +306,7 @@ public final class ObjectMonitor<D: DynamicObject>: ObjectRepresentation, Equata
// MARK: Private
private let objectID: ObjectType.ObjectID
private let id: O.ObjectID
private let fetchedResultsController: Internals.CoreStoreFetchedResultsController
private let fetchedResultsControllerDelegate: Internals.FetchedResultsControllerDelegate
private var lastCommittedAttributes = [String: NSObject]()
@@ -339,6 +314,11 @@ public final class ObjectMonitor<D: DynamicObject>: ObjectRepresentation, Equata
private var willChangeObjectKey: Void?
private var didDeleteObjectKey: Void?
private var didUpdateObjectKey: Void?
private var context: NSManagedObjectContext {
return self.fetchedResultsController.managedObjectContext
}
private func registerChangeNotification(_ notificationKey: UnsafeRawPointer, name: Notification.Name, toObserver observer: AnyObject, callback: @escaping (_ monitor: ObjectMonitor<ObjectType>) -> Void) {