2020-09-24 04:20:32 +08:00
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// Copyright (c) Microsoft Corporation
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// The Microsoft Corporation licenses this file to you under the MIT license.
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// See the LICENSE file in the project root for more information.
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using System;
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2020-10-23 00:45:48 +08:00
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using Microsoft.PowerToys.Settings.UI.Library.Interfaces;
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2020-09-24 04:20:32 +08:00
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2020-10-23 00:45:48 +08:00
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namespace Microsoft.PowerToys.Settings.UI.Library
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2020-09-24 04:20:32 +08:00
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{
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// This Singleton class is a wrapper around the settings configurations that are accessed by viewmodels.
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// This class can have only one instance and therefore the settings configurations are common to all.
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public class SettingsRepository<T> : ISettingsRepository<T>
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where T : class, ISettingsConfig, new()
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{
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private static readonly object _SettingsRepoLock = new object();
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private static ISettingsUtils _settingsUtils;
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private static SettingsRepository<T> settingsRepository;
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private T settingsConfig;
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2020-10-20 04:32:05 +08:00
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// Suppressing the warning as this is a singleton class and this method is
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// necessarily static
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#pragma warning disable CA1000 // Do not declare static members on generic types
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2020-09-24 04:20:32 +08:00
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public static SettingsRepository<T> GetInstance(ISettingsUtils settingsUtils)
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2020-10-20 04:32:05 +08:00
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#pragma warning restore CA1000 // Do not declare static members on generic types
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2020-09-24 04:20:32 +08:00
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{
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// To ensure that only one instance of Settings Repository is created in a multi-threaded environment.
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lock (_SettingsRepoLock)
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{
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if (settingsRepository == null)
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{
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settingsRepository = new SettingsRepository<T>();
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_settingsUtils = settingsUtils ?? throw new ArgumentNullException(nameof(settingsUtils));
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}
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return settingsRepository;
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}
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}
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// The Singleton class must have a private constructor so that it cannot be instantiated by any other object other than itself.
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private SettingsRepository()
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{
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}
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// Settings configurations shared across all viewmodels
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public T SettingsConfig
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{
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get
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{
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if (settingsConfig == null)
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{
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T settingsItem = new T();
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settingsConfig = _settingsUtils.GetSettings<T>(settingsItem.GetModuleName());
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}
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return settingsConfig;
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}
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set
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{
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if (value != null)
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{
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settingsConfig = value;
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}
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}
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}
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}
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}
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