[Core] Project model fixes

Don't automatically mark projects and solutions as shared after loading or
creating. Instead, SetShared() has to be called explicitly. The Ide calls
SetShared() on solutions opened in the workspace, so the result is more
or less the same.

Also added support for programatically attaching/detaching custom
extensions on projects and solutions.

1 files changed, 31 insertions, 1 deletions

diff --git a/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/WorkspaceObject.cs b/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/WorkspaceObject.cs
index 2060a57b8d..53a974ac55 100644
--- a/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/WorkspaceObject.cs
+++ b/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/WorkspaceObject.cs
@@ -78,7 +78,24 @@ namespace MonoDevelop.Projects
 				Runtime.AssertMainThread ();
 		}
 
-		protected virtual void SetShared ()
+		/// <summary>
+		/// Gets a value indicating whether this instance is shared.
+		/// </summary>
+		/// <remarks>Shared objects can only be modified in the main thread</remarks>
+		public bool IsShared {
+			get { return isShared; }
+		}
+
+		/// <summary>
+		/// Sets this object as shared, which means that it is accessible from several threads for reading,
+		/// but it can only be modified in the main thread
+		/// </summary>
+		public void SetShared ()
+		{
+			OnSetShared ();
+		}
+
+		protected virtual void OnSetShared ()
 		{
 			isShared = true;
 			ItemExtension.NotifyShared ();
@@ -267,6 +284,19 @@ namespace MonoDevelop.Projects
 			}
 		}
 
+		public void AttachExtension (WorkspaceObjectExtension ext)
+		{
+			AssertMainThread ();
+			ExtensionChain.AddExtension (ext);
+			ext.Init (this);
+		}
+
+		public void DetachExtension (WorkspaceObjectExtension ext)
+		{
+			AssertMainThread ();
+			ExtensionChain.RemoveExtension (ext);
+		}
+
 		void InitializeExtensionChain ()
 		{
 			// Create an initial empty extension chain. This avoid crashes in case a call to SupportsObject ends