// 
// ConvertImplicitToExplicitImplementationAction.cs
// 
// Author:
//      Mansheng Yang <lightyang0@gmail.com>
// 
// Copyright (c) 2012 Mansheng Yang <lightyang0@gmail.com>
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

using ICSharpCode.NRefactory.Semantics;
using ICSharpCode.NRefactory.TypeSystem;

namespace ICSharpCode.NRefactory.CSharp.Refactoring
{
	[ContextAction ("Convert implict to explicit implementation",
					Description = " Convert implict implementation of an interface method to explicit implementation")]
	public class ConvertImplicitToExplicitImplementationAction : SpecializedCodeAction<MethodDeclaration>
	{
		protected override CodeAction GetAction (RefactoringContext context, MethodDeclaration node)
		{
			if (!node.PrivateImplementationType.IsNull)
				return null;

			if (!node.NameToken.Contains (context.Location))
				return null;

			var method = (IMethod)((MemberResolveResult)context.Resolve (node)).Member;
			if (method.ImplementedInterfaceMembers.Count != 1 || method.DeclaringType.Kind == TypeKind.Interface)
				return null;

			return new CodeAction (context.TranslateString ("Convert implict to explicit implementation"),
				script =>
				{
					var explicitImpl = (MethodDeclaration)node.Clone ();
					// remove visibility modifier
					explicitImpl.Modifiers &= ~Modifiers.VisibilityMask;
					var implementedInterface = method.ImplementedInterfaceMembers [0].DeclaringType;
					explicitImpl.PrivateImplementationType = context.CreateShortType (implementedInterface);
					script.Replace (node, explicitImpl);
				},
				node.NameToken
			);
		}
	}
}
