mirror of
https://github.com/danbulant/Cosmos
synced 2026-05-19 20:39:01 +00:00
124 lines
3.5 KiB
C#
124 lines
3.5 KiB
C#
/***************************************************************************
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Copyright (c) Microsoft Corporation. All rights reserved.
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This code is licensed under the Visual Studio SDK license terms.
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THIS CODE IS PROVIDED *AS IS* WITHOUT WARRANTY OF
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ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING ANY
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IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR
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PURPOSE, MERCHANTABILITY, OR NON-INFRINGEMENT.
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***************************************************************************/
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using System;
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using System.Diagnostics;
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using System.Runtime.InteropServices;
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using Microsoft.VisualStudio;
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using Microsoft.VisualStudio.Shell.Interop;
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using IServiceProvider = System.IServiceProvider;
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using ShellConstants = Microsoft.VisualStudio.Shell.Interop.Constants;
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namespace Microsoft.VisualStudio.Project
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{
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/// <summary>
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/// helper to make the editor ignore external changes
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/// </summary>
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internal class SuspendFileChanges
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{
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private string documentFileName;
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private bool isSuspending;
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private IServiceProvider site;
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private IVsDocDataFileChangeControl fileChangeControl;
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public SuspendFileChanges(IServiceProvider site, string document)
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{
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this.site = site;
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this.documentFileName = document;
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}
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[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1800:DoNotCastUnnecessarily")]
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public void Suspend()
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{
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if(this.isSuspending)
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return;
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IntPtr docData = IntPtr.Zero;
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try
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{
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IVsRunningDocumentTable rdt = this.site.GetService(typeof(SVsRunningDocumentTable)) as IVsRunningDocumentTable;
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IVsHierarchy hierarchy;
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uint itemId;
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uint docCookie;
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IVsFileChangeEx fileChange;
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if(rdt == null) return;
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ErrorHandler.ThrowOnFailure(rdt.FindAndLockDocument((uint)_VSRDTFLAGS.RDT_NoLock, this.documentFileName, out hierarchy, out itemId, out docData, out docCookie));
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if((docCookie == (uint)ShellConstants.VSDOCCOOKIE_NIL) || docData == IntPtr.Zero)
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return;
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fileChange = this.site.GetService(typeof(SVsFileChangeEx)) as IVsFileChangeEx;
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if(fileChange != null)
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{
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this.isSuspending = true;
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ErrorHandler.ThrowOnFailure(fileChange.IgnoreFile(0, this.documentFileName, 1));
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if(docData != IntPtr.Zero)
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{
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IVsPersistDocData persistDocData = null;
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// if interface is not supported, return null
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object unknown = Marshal.GetObjectForIUnknown(docData);
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if(unknown is IVsPersistDocData)
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{
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persistDocData = (IVsPersistDocData)unknown;
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if(persistDocData is IVsDocDataFileChangeControl)
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{
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this.fileChangeControl = (IVsDocDataFileChangeControl)persistDocData;
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if(this.fileChangeControl != null)
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{
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ErrorHandler.ThrowOnFailure(this.fileChangeControl.IgnoreFileChanges(1));
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}
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}
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}
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}
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}
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}
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catch(InvalidCastException e)
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{
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Trace.WriteLine("Exception" + e.Message);
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}
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finally
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{
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if(docData != IntPtr.Zero)
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{
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Marshal.Release(docData);
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}
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}
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return;
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}
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public void Resume()
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{
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if(!this.isSuspending)
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return;
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IVsFileChangeEx fileChange;
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fileChange = this.site.GetService(typeof(SVsFileChangeEx)) as IVsFileChangeEx;
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if(fileChange != null)
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{
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this.isSuspending = false;
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ErrorHandler.ThrowOnFailure(fileChange.IgnoreFile(0, this.documentFileName, 0));
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if(this.fileChangeControl != null)
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{
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ErrorHandler.ThrowOnFailure(this.fileChangeControl.IgnoreFileChanges(0));
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}
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}
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}
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}
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}
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