SapiGrammar.cs source code in C# .NET

                        Code:
                         / DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Speech / Src / Internal / SapiInterop / SapiGrammar.cs / 1 / SapiGrammar.cs
                        
                        
                            //------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
//  All the calls to SAPI interfaces are wrapped into the class 'SapiRecognizer',
// 'SapiContext' and 'SapiGrammar'. 
// 
// The SAPI call are executed in the context of a proxy that is either a
// pass-through or forward the request to an MTA thread for SAPI 5.1 
//
// History:
//		4/1/2006	[....]		
//----------------------------------------------------------------- 

using System; 
using System.Collections.Generic; 
using System.Speech.Recognition;
using System.Speech.Internal.ObjectTokens; 
using System.Runtime.InteropServices;
using System.Text;

namespace System.Speech.Internal.SapiInterop 
{
    internal class SapiGrammar : IDisposable 
    { 
        //*******************************************************************
        // 
        // Constructors
        //
        //*******************************************************************
 
        #region Constructors
 
        internal SapiGrammar (ISpRecoGrammar sapiGrammar, SapiProxy thread) 
        {
            _sapiGrammar = sapiGrammar; 
            _sapiProxy = thread;
        }

        public void Dispose () 
        {
            if (!_disposed) 
            { 
                Marshal.ReleaseComObject (_sapiGrammar);
                GC.SuppressFinalize (this); 
                _disposed = true;
            }
        }
 
        #endregion
 
        //******************************************************************** 
        //
        // Internal Methods 
        //
        //*******************************************************************

        #region Internal Methods 

        internal void SetGrammarState (SPGRAMMARSTATE state) 
        { 
            _sapiProxy.Invoke2 (delegate { _sapiGrammar.SetGrammarState (state); });
        } 

        internal void SetWordSequenceData (string text, SPTEXTSELECTIONINFO info)
        {
            SPTEXTSELECTIONINFO selectionInfo = info; 
            _sapiProxy.Invoke2 (delegate { _sapiGrammar.SetWordSequenceData (text, (uint) text.Length, ref selectionInfo); });
        } 
 
        internal void LoadCmdFromMemory (IntPtr grammar, SPLOADOPTIONS options)
        { 
            _sapiProxy.Invoke2 (delegate { _sapiGrammar.LoadCmdFromMemory (grammar, options); });
        }

        internal void LoadDictation (string pszTopicName, SPLOADOPTIONS options) 
        {
            _sapiProxy.Invoke2 (delegate { _sapiGrammar.LoadDictation (pszTopicName, options); }); 
        } 

        internal SAPIErrorCodes SetDictationState (SPRULESTATE state) 
        {
            return (SAPIErrorCodes) _sapiProxy.Invoke (delegate { return _sapiGrammar.SetDictationState (state); });
        }
 
        internal SAPIErrorCodes SetRuleState (string name, SPRULESTATE state)
        { 
            return (SAPIErrorCodes) _sapiProxy.Invoke (delegate { return _sapiGrammar.SetRuleState (name, IntPtr.Zero, state); }); 
        }
 
        /*
         * The Set of methods are only available with SAPI 5.3. There is no need then to use the SAPI proxy to switch
         * the call to an MTA thread.
         * 
         */
        internal void SetGrammarLoader (ISpGrammarResourceLoader resourceLoader) 
        { 
            SpRecoGrammar2.SetGrammarLoader (resourceLoader);
        } 

        internal void LoadCmdFromMemory2 (IntPtr grammar, SPLOADOPTIONS options, string sharingUri, string baseUri)
        {
            SpRecoGrammar2.LoadCmdFromMemory2 (grammar, options, sharingUri, baseUri); 
        }
 
        internal void SetRulePriority (string name, UInt32 id, Int32 priority) 
        {
            SpRecoGrammar2.SetRulePriority (name, id, priority); 
        }
        internal void SetRuleWeight (string name, UInt32 id, float weight)
        {
            SpRecoGrammar2.SetRuleWeight (name, id, weight); 
        }
        internal void SetDictationWeight (float weight) 
        { 
            SpRecoGrammar2.SetDictationWeight (weight);
        } 

        #endregion

        //******************************************************************** 
        //
        // Internal Properties 
        // 
        //********************************************************************
 
        #region Internal Properties

        internal ISpRecoGrammar2 SpRecoGrammar2
        { 
            get
            { 
                if (_sapiGrammar2 == null) 
                {
                    _sapiGrammar2 = (ISpRecoGrammar2) _sapiGrammar; 
                }
                return (ISpRecoGrammar2) _sapiGrammar2;
            }
        } 

        #endregion 
 
        //*******************************************************************
        // 
        // Private Fields
        //
        //********************************************************************
 
        #region Private Methods
 
        private ISpRecoGrammar2 _sapiGrammar2; 
        private ISpRecoGrammar _sapiGrammar;
        private SapiProxy _sapiProxy; 
        private bool _disposed;

        #endregion
    } 
}

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