SendAgentStatusRequest.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / infocard / Service / managed / Microsoft / InfoCards / SendAgentStatusRequest.cs / 1 / SendAgentStatusRequest.cs

                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------
namespace Microsoft.InfoCards
{ 
    using System;
    using System.Collections; 
    using System.IO; 
    using System.Threading;
    using Microsoft.InfoCards.Diagnostics; 
    using IDT = Microsoft.InfoCards.Diagnostics.InfoCardTrace;

    //
    // Summary: 
    // This class handles the request from the UI Agent to set the agent status.
    // 
    class SendAgentStatusRequest : UIAgentRequest 
    {
 
        //
        // Status must match that in the agent - SendAgentStatusRequest.h
        //
        public enum AgentStatusType 
        {
            AGENT_INITIALIZING        = 0, 
            AGENT_DESKTOP_CREATED     = 1, 
            AGENT_DESKTOP_SWITCH_OUT  = 2,
            AGENT_DESKTOP_SWITCH_IN   = 3, 
            AGENT_SHUTTING_DOWN       = 4
        };

        AgentStatusType m_agentStatus; 
        bool            m_retVal;
        uint            m_ATApplicationsFlags; 
 
        //
        // Summary: 
        //  Constructs a new SendAgentStatusRequest instance.
        //
        // Parameters:
        //  rpcHandle    - Handle to the RPC call from the UI Agent 
        //  inArgs       - Stream for the incoming information. Null in this case.
        //  outArgs      - Stream used to collect the outbound data. 
        // 
        public SendAgentStatusRequest( IntPtr rpcHandle, Stream inArgs, Stream outArgs, ClientUIRequest parentRequest )
            : base( rpcHandle, inArgs, outArgs, parentRequest ) 
        {

        }
 
        //
        // Summary 
        //  Event for marshalling the request information 
        //
        protected override void OnMarshalInArgs() 
        {
            IDT.Assert( InArgs.Length > 0, "The agent status must be specified" );

            // 
            // Get the current agent status from the InArgs stream
            // 
            BinaryReader reader = new InfoCardBinaryReader( InArgs, System.Text.Encoding.Unicode ); 

            m_agentStatus = (AgentStatusType) reader.ReadUInt32(); 
            m_ATApplicationsFlags = reader.ReadUInt32();
        }

        // 
        // Summary
        //  Event for processing the user request 
        // 
        protected override void OnProcess()
        { 
            //
            // Determine the action based on the status change.
            //
            m_retVal = false; 
            switch ( m_agentStatus )
            { 
                case AgentStatusType.AGENT_DESKTOP_CREATED: 
                case AgentStatusType.AGENT_DESKTOP_SWITCH_IN:
 
                    //
                    // Start AT Applications as we know the private desktop is ready.
                    //
                    ParentRequest.StartAccessibilityApplications( m_ATApplicationsFlags ); 
                    break;
 
                case AgentStatusType.AGENT_DESKTOP_SWITCH_OUT: 
                    //
                    // Start processing to kill the AT apps on private desktop and 
                    // start up apps on the user desktop. Note that if we get true
                    // as the return value, on vista the agent has to start AT apps
                    // using the WinKey + U sequence.
                    // 
                    m_retVal = ParentRequest.RestartAccessibilityApplications();
                    break; 
            } 
        }
 
        //
        // Summary
        //  Event for marshalling the response information
        // 
        // Remarks
        //  Nothing. 
        // 
        protected override void OnMarshalOutArgs()
        { 
            BinaryWriter writer = new BinaryWriter( OutArgs, System.Text.Encoding.Unicode );

            writer.Write( m_retVal );
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
                        

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