Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / AddIn / AddIn / System / Addin / Pipeline / ContractAdapter.cs / 1305376 / ContractAdapter.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== /*============================================================ ** ** Class: ContractAdapter ** ===========================================================*/ using System; using System.Collections.Generic; using System.Globalization; using System.AddIn.Contract; using System.AddIn; using System.Security; using System.Security.Permissions; using System.AddIn.Hosting; using System.Reflection; using System.AddIn.MiniReflection; using System.Diagnostics.Contracts; namespace System.AddIn.Pipeline { public static class ContractAdapter { public static ContractHandle ViewToContractAdapter(Object view) { if (view == null) throw new ArgumentNullException("view"); System.Diagnostics.Contracts.Contract.EndContractBlock(); AddInController controller = AddInController.GetAddInController(view); if (controller != null) { return new ContractHandle(controller.AddInControllerImpl.GetContract()); } return null; } [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1004:GenericMethodsShouldProvideTypeParameter", Justification = "Factory Method")] public static TView ContractToViewAdapter(ContractHandle contract, PipelineStoreLocation location) { if (location != PipelineStoreLocation.ApplicationBase) throw new ArgumentException(Res.InvalidPipelineStoreLocation, "location"); System.Diagnostics.Contracts.Contract.EndContractBlock(); String appBase = AddInStore.GetAppBase(); return ContractToViewAdapterImpl (contract, appBase, false); } [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1004:GenericMethodsShouldProvideTypeParameter", Justification = "Factory Method")] public static TView ContractToViewAdapter (ContractHandle contract, string pipelineRoot) { return ContractToViewAdapterImpl (contract, pipelineRoot, true); } [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Reliability","CA2004:RemoveCallsToGCKeepAlive", Justification="The message is about SafeHandles")] [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1004:GenericMethodsShouldProvideTypeParameter", Justification="Factory Method")] [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Security","CA2103:ReviewImperativeSecurity")] private static TView ContractToViewAdapterImpl (ContractHandle contract, String pipelineRoot, bool demand) { if (contract == null) throw new ArgumentNullException("contract"); if (pipelineRoot == null) throw new ArgumentNullException("pipelineRoot"); if (String.IsNullOrEmpty(pipelineRoot)) throw new ArgumentException(Res.PathCantBeEmpty); System.Diagnostics.Contracts.Contract.EndContractBlock(); if (demand) new FileIOPermission(FileIOPermissionAccess.Read, pipelineRoot).Demand(); Type havType = typeof(TView); TypeInfo havTypeInfo = new TypeInfo(havType); List partialTokens = AddInStore.GetPartialTokens(pipelineRoot); foreach (PartialToken partialToken in partialTokens) { if (AddInStore.Contains(partialToken.HostAdapter.HostAddinViews, havTypeInfo)) { partialToken.PipelineRootDirectory = pipelineRoot; //Ask for something that can implement the contract in this partial token. The result will //either be null, the addin adapter itself, or another addin adapter IContract subcontract = contract.Contract.QueryContract(partialToken._contract.TypeInfo.AssemblyQualifiedName); if (subcontract != null) { //Instantiate the adapter and pass in the addin to its constructor TView hav = AddInActivator.ActivateHostAdapter (partialToken, subcontract); return hav; } } } // Don't let the ref count go to zero too soon, before we increment it in ActivateHostAdapter // This is important when QueryContract returns the addIn adapter itself. A GC at that point // may collect the ContractHandle and decrement the ref count to zero before we have a chance to increment it System.GC.KeepAlive(contract); // return null. Compiler makes us return default(TView), which will be null return default(TView); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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