/****************************************************************************
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**
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** Copyright (C) 2018 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the Qt VS Tools.
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**
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** $QT_BEGIN_LICENSE:GPL-EXCEPT$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3 as published by the Free Software
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** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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using Microsoft.VisualStudio.Shell;
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using System;
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using System.Collections.Concurrent;
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using System.Threading.Tasks;
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namespace QtVsTools.VisualStudio
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{
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using ServiceType = Tuple<Type, Type>;
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public interface IVsServiceProvider
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{
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I GetService<T, I>() where T : class where I : class;
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Task<I> GetServiceAsync<T, I>() where T : class where I : class;
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}
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public static class VsServiceProvider
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{
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public static IVsServiceProvider Instance { get; set; }
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static ConcurrentDictionary<ServiceType, object> services
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= new ConcurrentDictionary<ServiceType, object>();
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public static I GetService<I>()
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where I : class
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{
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return GetService<I, I>();
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}
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public static I GetService<T, I>()
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where T : class
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where I : class
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{
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if (Instance == null)
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return null;
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object serviceObj;
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if (services.TryGetValue(new ServiceType(typeof(T), typeof(I)), out serviceObj))
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return serviceObj as I;
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var serviceInterface = Instance.GetService<T, I>();
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services.TryAdd(new ServiceType(typeof(T), typeof(I)), serviceInterface);
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return serviceInterface;
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}
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public static async Task<I> GetServiceAsync<I>()
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where I : class
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{
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return await GetServiceAsync<I, I>();
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}
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public static async Task<I> GetServiceAsync<T, I>()
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where T : class
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where I : class
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{
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if (Instance == null)
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return null;
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object serviceObj;
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if (services.TryGetValue(new ServiceType(typeof(T), typeof(I)), out serviceObj))
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return serviceObj as I;
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var serviceInterface = await Instance.GetServiceAsync<T, I>();
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services.TryAdd(new ServiceType(typeof(T), typeof(I)), serviceInterface);
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return serviceInterface;
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}
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}
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}
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