add data loading classes; update PaginationWrapper (collection view support)

2018-03-21 16:24:11 +03:00
parent 8839d029a9
commit 03619df2f1
36 changed files with 1523 additions and 482 deletions
@@ -0,0 +1,58 @@
+//
+//  Copyright (c) 2018 Touch Instinct
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the Software), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+//
+
+public enum GeneralDataLoadingState<DS: DataSource>: DataLoadingState {
+
+    case initial
+    case loading
+    case result(newResult: DS.ResultType, from: DS)
+    case error(error: Error)
+    case empty
+
+    public typealias DataSourceType = DS
+
+    public static var initialState: GeneralDataLoadingState<DS> {
+        return .initial
+    }
+
+    public static var emptyState: GeneralDataLoadingState<DS> {
+        return .empty
+    }
+
+    public static func loadingState(after: GeneralDataLoadingState<DS>) -> GeneralDataLoadingState<DS> {
+        return .loading
+    }
+
+    public static func resultState(result: DS.ResultType,
+                                   from: DS,
+                                   after: GeneralDataLoadingState<DS>) -> GeneralDataLoadingState<DS> {
+
+        return .result(newResult: result, from: from)
+    }
+
+    public static func errorState(error: Error,
+                                  after: GeneralDataLoadingState<DS>) -> GeneralDataLoadingState<DS> {
+
+        return .error(error: error)
+    }
+
+}