Connection string for addin in Visual Studio 2012

Hi there!

I develop an addin for MSVS 2012. I need to get connection string for tsql tab currently opened.

I used IScriptFactory interface members to get connection string in MSVS 2010 (I use ServiceCache.ScriptFactory.CurrentlyActiveWndConnectionInfo.UIConnectionInfo property). IScriptFactory interface is defined in Microsoft.SqlServer.SqlTools.VSIntegration.VS.dll assembly.

For SSMS 2012 I use the same interface but defined in SqlPackageBase.dll assembly.

I can find neither Microsoft.SqlServer.SqlTools.VSIntegration.VS.dll nor SqlPackageBase.dll assemblies in MSVS 2012 (Ultimate RTM) installed folder.

Also I tried to find CurrentlyActiveWndConnectionInfo class and IScriptFactory interface in all MSVS 2012 assemblies installed but found nothing.

How can I get connection string for current tsql tab in MSVS 2012?