Implement EnvDTE.ProjectItem.Document

The T4MVC template checks the ProjectItem.Document property to see if it has been opened.

src/AddIns/Misc/PackageManagement/Project/Src/EnvDTE/Document.cs

@@ -7,13 +7,16 @@ namespace ICSharpCode.PackageManagement.EnvDTE
 {
 	public class Document
 	{
-		public Document()
+		public Document(string fileName)
 		{
+			this.FullName = fileName;
 		}
 		
 		public virtual bool Saved {
 			get { throw new NotImplementedException(); }
 			set { throw new NotImplementedException(); }
 		}
+		
+		public string FullName { get; private set; }
 	}
 }

src/AddIns/Misc/PackageManagement/Project/Src/EnvDTE/Project.cs

@@ -289,5 +289,10 @@ namespace ICSharpCode.PackageManagement.EnvDTE
 			}
 			return null;
 		}
+		
+		internal bool IsFileOpen(string fileName)
+		{
+			return fileService.IsOpen(fileName);
+		}
 	}
 }

src/AddIns/Misc/PackageManagement/Project/Src/EnvDTE/ProjectItem.cs

@@ -167,11 +167,23 @@ namespace ICSharpCode.PackageManagement.EnvDTE
 		
 		public virtual string FileNames(short index)
 		{
-			return projectItem.FileName;
+			return FileName;
+		}
+		
+		string FileName {
+			get { return projectItem.FileName; }
 		}
 		
 		public Document Document {
-			get { throw new NotImplementedException(); }
+			get { return GetOpenDocument(); }
+		}
+		
+		Document GetOpenDocument()
+		{
+			if (ContainingProject.IsFileOpen(FileName)) {
+				return new Document(FileName);
+			}
+			return null;
 		}
 		
 		public Window Open(string viewKind)

src/AddIns/Misc/PackageManagement/Project/Src/IPackageManagementFileService.cs

@@ -10,6 +10,7 @@ namespace ICSharpCode.PackageManagement
 	{
 		void RemoveFile(string path);
 		void RemoveDirectory(string path);
+		bool IsOpen(string fileName);
 		void OpenFile(string fileName);
 		void CopyFile(string oldFileName, string newFileName);
 		bool FileExists(string fileName);

src/AddIns/Misc/PackageManagement/Project/Src/PackageManagementFileService.cs

@@ -41,6 +41,15 @@ namespace ICSharpCode.PackageManagement
 			}
 		}
 		
+		public bool IsOpen(string fileName)
+		{
+			if (WorkbenchSingleton.InvokeRequired) {
+				return WorkbenchSingleton.SafeThreadFunction(() => IsOpen(fileName));
+			} else {
+				return FileService.IsOpen(fileName);
+			}
+		}
+		
 		public void CopyFile(string oldFileName, string newFileName)
 		{
 			if (WorkbenchSingleton.InvokeRequired) {

src/AddIns/Misc/PackageManagement/Test/Src/EnvDTE/ProjectItemTests.cs

@@ -5,7 +5,9 @@ using System;
 using System.Collections;
 using System.Collections.Generic;
 using ICSharpCode.PackageManagement.EnvDTE;
+using ICSharpCode.SharpDevelop.Gui;
 using DTE = ICSharpCode.PackageManagement.EnvDTE;
+using Rhino.Mocks;
 using NUnit.Framework;
 using PackageManagement.Tests.Helpers;
 
@@ -27,6 +29,12 @@ namespace PackageManagement.Tests.EnvDTE
 			fakeFileService = project.FakeFileService;
 		}
 		
+		void OpenFileInSharpDevelop(string fileName)
+		{
+			IViewContent view = MockRepository.GenerateStub<IViewContent>();
+			fakeFileService.AddOpenView(view, fileName);
+		}
+		
 		[Test]
 		public void ProjectItems_ProjectHasOneFileInsideSrcDirectory_ReturnsOneFileForSrcDirectory()
 		{
@@ -230,5 +238,33 @@ namespace PackageManagement.Tests.EnvDTE
 			
 			Assert.AreEqual(@"d:\projects\MyProject\src", fileName);
 		}
+		
+		[Test]
+		public void Document_ProjectItemNotOpenInSharpDevelop_ReturnsNull()
+		{
+			CreateProjectItems();
+			msbuildProject.FileName = @"d:\projects\MyProject\MyProject.csproj";
+			msbuildProject.AddFile(@"program.cs");
+			ProjectItem item = projectItems.Item("program.cs");
+			
+			Document document = item.Document;
+			
+			Assert.IsNull(document);
+		}
+		
+		[Test]
+		public void Document_ProjectItemOpenInSharpDevelop_ReturnsOpenDocumentForFile()
+		{
+			CreateProjectItems();
+			msbuildProject.FileName = @"d:\projects\MyProject\MyProject.csproj";
+			msbuildProject.AddFile(@"program.cs");
+			ProjectItem item = projectItems.Item("program.cs");
+			string projectItemFileName = @"d:\projects\MyProject\program.cs";
+			OpenFileInSharpDevelop(projectItemFileName);
+			
+			Document document = item.Document;
+			
+			Assert.AreEqual(projectItemFileName, document.FullName);
+		}
 	}
 }

src/AddIns/Misc/PackageManagement/Test/Src/Helpers/FakeFileService.cs

@@ -5,8 +5,10 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+
 using ICSharpCode.PackageManagement;
 using ICSharpCode.SharpDevelop.Dom;
+using ICSharpCode.SharpDevelop.Gui;
 using ICSharpCode.SharpDevelop.Project;
 
 namespace PackageManagement.Tests.Helpers
@@ -123,5 +125,17 @@ namespace PackageManagement.Tests.Helpers
 			FileNamePassedToGetCompilationUnit = fileName;
 			return CompilationUnitToReturnFromGetCompilationUnit;
 		}
+		
+		public bool IsOpen(string fileName)
+		{
+			return openViews.ContainsKey(fileName);
+		}
+		
+		Dictionary<string, IViewContent> openViews = new Dictionary<string, IViewContent>();
+		
+		public void AddOpenView(IViewContent view, string fileName)
+		{
+			openViews.Add(fileName, view);
+		}
 	}
 }