[3405] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[16453] | 3 | * Copyright (C) 2002-2019 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[3405] | 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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| 22 | using System;
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[16440] | 23 | using System.Threading;
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[3405] | 24 |
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| 25 | namespace HeuristicLab.Common {
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[3424] | 26 | public abstract class ContentManager {
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| 27 | private static ContentManager instance;
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| 28 |
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[3483] | 29 | public static void Initialize(ContentManager manager) {
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| 30 | if (manager == null) throw new ArgumentNullException();
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| 31 | if (ContentManager.instance != null) throw new InvalidOperationException("ContentManager has already been initialized.");
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| 32 | ContentManager.instance = manager;
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[3424] | 33 | }
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| 34 |
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[3483] | 35 | protected ContentManager() { }
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[3424] | 36 |
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[3483] | 37 | public static IStorableContent Load(string filename) {
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| 38 | if (instance == null) throw new InvalidOperationException("ContentManager is not initialized.");
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| 39 | IStorableContent content = instance.LoadContent(filename);
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| 40 | content.Filename = filename;
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| 41 | return content;
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[3424] | 42 | }
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[3483] | 43 | public static void LoadAsync(string filename, Action<IStorableContent, Exception> loadingCompletedCallback) {
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| 44 | if (instance == null) throw new InvalidOperationException("ContentManager is not initialized.");
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| 45 | var func = new Func<string, IStorableContent>(instance.LoadContent);
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[16440] | 46 | func.BeginInvoke(filename, delegate (IAsyncResult result) {
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[3483] | 47 | Exception error = null;
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| 48 | IStorableContent content = null;
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| 49 | try {
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| 50 | content = func.EndInvoke(result);
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| 51 | content.Filename = filename;
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[16440] | 52 | } catch (Exception ex) {
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[3483] | 53 | error = ex;
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| 54 | }
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| 55 | loadingCompletedCallback(content, error);
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| 56 | }, null);
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[3424] | 57 | }
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[3483] | 58 | protected abstract IStorableContent LoadContent(string filename);
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[3424] | 59 |
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[16440] | 60 | public static void Save(IStorableContent content, string filename, bool compressed, CancellationToken cancellationToken = default(CancellationToken)) {
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[3483] | 61 | if (instance == null) throw new InvalidOperationException("ContentManager is not initialized.");
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[16440] | 62 | instance.SaveContent(content, filename, compressed, cancellationToken);
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[3483] | 63 | content.Filename = filename;
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[3424] | 64 | }
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[16440] | 65 | public static void SaveAsync(IStorableContent content, string filename, bool compressed, Action<IStorableContent, Exception> savingCompletedCallback, CancellationToken cancellationToken = default(CancellationToken)) {
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[3483] | 66 | if (instance == null) throw new InvalidOperationException("ContentManager is not initialized.");
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[16440] | 67 | var action = new Action<IStorableContent, string, bool, CancellationToken>(instance.SaveContent);
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| 68 | action.BeginInvoke(content, filename, compressed, cancellationToken, delegate (IAsyncResult result) {
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[4245] | 69 | Exception error = null;
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| 70 | try {
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| 71 | action.EndInvoke(result);
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| 72 | content.Filename = filename;
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[16440] | 73 | } catch (Exception ex) {
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[4245] | 74 | error = ex;
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| 75 | }
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| 76 | savingCompletedCallback(content, error);
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| 77 | }, null);
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[3500] | 78 |
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[3424] | 79 | }
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[16440] | 80 | protected abstract void SaveContent(IStorableContent content, string filename, bool compressed, CancellationToken cancellationToken);
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[3405] | 81 | }
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| 82 | }
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