Support enumerating project item properties in PowerShell scripts.

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

@@ -2,11 +2,13 @@
 // This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
 
 using System;
+using System.Collections.Generic;
 
 namespace ICSharpCode.PackageManagement.EnvDTE
 {
 	public interface IPropertyFactory
 	{
 		Property CreateProperty(string name);
+		IEnumerator<Property> GetEnumerator();
 	}
 }

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

@@ -12,7 +12,7 @@ namespace ICSharpCode.PackageManagement.EnvDTE
 	public class ProjectItem
 	{
 		SD.FileProjectItem projectItem;
-		const string CopyToOutputDirectoryPropertyName = "CopyToOutputDirectory";
+		public const string CopyToOutputDirectoryPropertyName = "CopyToOutputDirectory";
 		
 		public ProjectItem(Project project, SD.FileProjectItem projectItem)
 		{

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

@@ -2,6 +2,7 @@
 // This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
 
 using System;
+using System.Collections.Generic;
 
 namespace ICSharpCode.PackageManagement.EnvDTE
 {
@@ -18,5 +19,10 @@ namespace ICSharpCode.PackageManagement.EnvDTE
 		{
 			return new ProjectItemProperty(projectItem, name);
 		}
+		
+		public IEnumerator<Property> GetEnumerator()
+		{
+			yield return new ProjectItemProperty(projectItem, ProjectItem.CopyToOutputDirectoryPropertyName);
+		}
 	}
 }

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

@@ -2,6 +2,7 @@
 // This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
 
 using System;
+using System.Collections.Generic;
 
 namespace ICSharpCode.PackageManagement.EnvDTE
 {
@@ -18,5 +19,10 @@ namespace ICSharpCode.PackageManagement.EnvDTE
 		{
 			return new ProjectProperty(project, name);
 		}
+		
+		public IEnumerator<Property> GetEnumerator()
+		{
+			throw new NotImplementedException();
+		}
 	}
 }

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

@@ -2,11 +2,13 @@
 // This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
 
 using System;
+using System.Collections;
+using System.Collections.Generic;
 using ICSharpCode.SharpDevelop.Project;
 
 namespace ICSharpCode.PackageManagement.EnvDTE
 {
-	public class Properties
+	public class Properties : IEnumerable<Property>
 	{
 		IPropertyFactory propertyFactory;
 		
@@ -19,5 +21,15 @@ namespace ICSharpCode.PackageManagement.EnvDTE
 		{
 			return propertyFactory.CreateProperty(propertyName);
 		}
+		
+		public IEnumerator<Property> GetEnumerator()
+		{
+			return propertyFactory.GetEnumerator();
+		}
+		
+		IEnumerator IEnumerable.GetEnumerator()
+		{
+			return GetEnumerator();
+		}
 	}
 }

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

@@ -2,6 +2,9 @@
 // This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
 
 using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
 using ICSharpCode.PackageManagement.EnvDTE;
 using NUnit.Framework;
 using PackageManagement.Tests.Helpers;
@@ -27,6 +30,17 @@ namespace PackageManagement.Tests.EnvDTE
 			properties = projectItem.Properties;
 		}
 		
+		void AssertContainsProperty(string propertyName, IEnumerable items)
+		{
+			var itemsList = new List<Property>();
+			foreach (Property property in items) {
+				itemsList.Add(property);
+			}
+			var matchedProperty = itemsList.Find(p => p.Name == propertyName);
+			
+			Assert.AreEqual(propertyName, matchedProperty.Name);
+		}
+		
 		[Test]
 		public void Value_GetCopyToOutputDirectoryPropertyValue_ReturnsCopyToOutputDirectoryValueFromMSBuildProject()
 		{
@@ -76,5 +90,27 @@ namespace PackageManagement.Tests.EnvDTE
 			
 			Assert.IsTrue(saved);
 		}
+		
+		[Test]
+		public void GetEnumerator_FindCopyToOutputDirectoryPropertyInAllProperties_ReturnsPropertyWithCopyToOutputDirectoryName()
+		{
+			CreateProjectItemProperties();
+			
+			var projectItemProperties = new List<Property>(properties);
+			var property = projectItemProperties.Find(p => p.Name == "CopyToOutputDirectory");
+			
+			Assert.AreEqual("CopyToOutputDirectory", property.Name);
+		}
+		
+		
+		[Test]
+		public void GetEnumerator_FindCopyToOutputDirectoryPropertyFromUntypedEnumerator_ReturnsPropertyWithCopyToOutputDirectoryName()
+		{
+			CreateProjectItemProperties();
+			
+			var projectItemProperties = properties as IEnumerable;
+			
+			AssertContainsProperty("CopyToOutputDirectory", projectItemProperties);
+		}
 	}
 }