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Code Issues 95 Packages Projects Releases 10 Wiki Activity

thanks to protocol extensions, you can now omit ListObserver and ObjectObserver methods you don't need to implement

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This commit is contained in:
John Rommel Estropia
2015-08-09 05:04:47 +09:00
parent 83c724f584
commit 283104af3f
3 changed files with 68 additions and 5 deletions
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49
CoreStore/Observing/ListObserver.swift
View File

@@ -60,6 +60,19 @@ public protocol ListObserver: class {
func listMonitorDidChange(monitor: ListMonitor<EntityType>)
}
public extension ListObserver {
/**
The default implementation does nothing.
*/
func listMonitorWillChange(monitor: ListMonitor<EntityType>) { }
/**
The default implementation does nothing.
*/
func listMonitorDidChange(monitor: ListMonitor<EntityType>) { }
}
// MARK: - ListObjectObserver
@@ -112,6 +125,29 @@ public protocol ListObjectObserver: ListObserver {
func listMonitor(monitor: ListMonitor<EntityType>, didMoveObject object: EntityType, fromIndexPath: NSIndexPath, toIndexPath: NSIndexPath)
}
public extension ListObjectObserver {
/**
The default implementation does nothing.
*/
func listMonitor(monitor: ListMonitor<EntityType>, didInsertObject object: EntityType, toIndexPath indexPath: NSIndexPath) { }
/**
The default implementation does nothing.
*/
func listMonitor(monitor: ListMonitor<EntityType>, didDeleteObject object: EntityType, fromIndexPath indexPath: NSIndexPath) { }
/**
The default implementation does nothing.
*/
func listMonitor(monitor: ListMonitor<EntityType>, didUpdateObject object: EntityType, atIndexPath indexPath: NSIndexPath) { }
/**
The default implementation does nothing.
*/
func listMonitor(monitor: ListMonitor<EntityType>, didMoveObject object: EntityType, fromIndexPath: NSIndexPath, toIndexPath: NSIndexPath) { }
}
// MARK: - ListSectionObserver
@@ -145,3 +181,16 @@ public protocol ListSectionObserver: ListObjectObserver {
*/
func listMonitor(monitor: ListMonitor<EntityType>, didDeleteSection sectionInfo: NSFetchedResultsSectionInfo, fromSectionIndex sectionIndex: Int)
}
public extension ListSectionObserver {
/**
The default implementation does nothing.
*/
func listMonitor(monitor: ListMonitor<EntityType>, didInsertSection sectionInfo: NSFetchedResultsSectionInfo, toSectionIndex sectionIndex: Int) { }
/**
The default implementation does nothing.
*/
func listMonitor(monitor: ListMonitor<EntityType>, didDeleteSection sectionInfo: NSFetchedResultsSectionInfo, fromSectionIndex sectionIndex: Int) { }
}

19
CoreStore/Observing/ObjectObserver.swift
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@@ -67,3 +67,22 @@ public protocol ObjectObserver: class {
*/
func objectMonitor(monitor: ObjectMonitor<EntityType>, didDeleteObject object: EntityType)
}
public extension ObjectObserver {
/**
The default implementation does nothing.
*/
func objectMonitor(monitor: ObjectMonitor<EntityType>, willUpdateObject object: EntityType) { }
/**
The default implementation does nothing.
*/
func objectMonitor(monitor: ObjectMonitor<EntityType>, didUpdateObject object: EntityType, changedPersistentKeys: Set<KeyPath>) { }
/**
The default implementation does nothing.
*/
func objectMonitor(monitor: ObjectMonitor<EntityType>, didDeleteObject object: EntityType) { }
}

5
CoreStoreDemo/CoreStoreDemo/List and Object Observers Demo/ObjectObserverDemoViewController.swift
View File

@@ -80,11 +80,6 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
// MARK: ObjectObserver
func objectMonitor(monitor: ObjectMonitor<Palette>, willUpdateObject object: Palette) {
// none
}
func objectMonitor(monitor: ObjectMonitor<Palette>, didUpdateObject object: Palette, changedPersistentKeys: Set<KeyPath>) {
self.reloadPaletteInfo(object, changedKeys: changedPersistentKeys)