TransformProviderWrapper.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / MS / Internal / Automation / TransformProviderWrapper.cs / 1305600 / TransformProviderWrapper.cs
                        
                        
                            //---------------------------------------------------------------------------- 
//
// 
//    Copyright (C) Microsoft Corporation.  All rights reserved.
//  
//
// 
// Description: Transform pattern provider wrapper for WCP 
//
// History: 
//  02/04/2004 : preid created
//
//---------------------------------------------------------------------------
 
using System;
using System.Windows.Threading; 
using System.Windows.Media; 
using System.Windows.Automation;
using System.Windows.Automation.Provider; 
using System.Windows.Automation.Peers;

namespace MS.Internal.Automation
{ 
    // Automation/WCP Wrapper class: Implements that UIAutomation I...Provider
    // interface, and calls through to a WCP AutomationPeer which implements the corresponding 
    // I...Provider inteface. Marshalls the call from the RPC thread onto the 
    // target AutomationPeer's context.
    // 
    // Class has two major parts to it:
    // * Implementation of the I...Provider, which uses Dispatcher.Invoke
    //   to call a private method (lives in second half of the class) via a delegate,
    //   if necessary, packages any params into an object param. Return type of Invoke 
    //   must be cast from object to appropriate type.
    // * private methods - one for each interface entry point - which get called back 
    //   on the right context. These call through to the peer that's actually 
    //   implenting the I...Provider version of the interface.
    internal class TransformProviderWrapper: MarshalByRefObject, ITransformProvider 
    {
        //-----------------------------------------------------
        //
        //  Constructors 
        //
        //----------------------------------------------------- 
 
        #region Constructors
 
        private TransformProviderWrapper( AutomationPeer peer, ITransformProvider iface )
        {
            _peer = peer;
            _iface = iface; 
        }
 
        #endregion Constructors 

 
        //------------------------------------------------------
        //
        //  Interface IWindowProvider
        // 
        //-----------------------------------------------------
 
        #region Interface ITransformProvider 

 
        public void Move( double x, double y )
        {
            ElementUtil.Invoke( _peer, new DispatcherOperationCallback( Move ), new double [ ] { x, y } );
        } 

        public void Resize( double width, double height ) 
        { 
            ElementUtil.Invoke( _peer, new DispatcherOperationCallback( Resize ), new double [ ] { width, height } );
        } 

        public void Rotate( double degrees )
        {
            ElementUtil.Invoke( _peer, new DispatcherOperationCallback( Rotate ), degrees ); 
        }
 
        public bool CanMove 
        {
            get 
            {
                return (bool) ElementUtil.Invoke( _peer, new DispatcherOperationCallback( GetCanMove ), null );
            }
        } 

        public bool CanResize 
        { 
            get
            { 
                return (bool) ElementUtil.Invoke( _peer, new DispatcherOperationCallback( GetCanResize ), null );
            }
        }
 
        public bool CanRotate
        { 
            get 
            {
                return (bool) ElementUtil.Invoke( _peer, new DispatcherOperationCallback( GetCanRotate ), null ); 
            }
        }

        #endregion Interface ITransformProvider 

 
        //------------------------------------------------------ 
        //
        //  Internal Methods 
        //
        //------------------------------------------------------

        #region Internal Methods 

        internal static object Wrap( AutomationPeer peer, object iface ) 
        { 
            return new TransformProviderWrapper( peer, (ITransformProvider) iface );
        } 

        #endregion Internal Methods

        //----------------------------------------------------- 
        //
        //  Private Methods 
        // 
        //------------------------------------------------------
 
        #region Private Methods

        private object Move( object arg )
        { 
            double [ ] args = (double [ ]) arg;
            _iface.Move( args[ 0 ], args[ 1 ] ); 
            return null; 
        }
 
        private object Resize( object arg )
        {
            double [ ] args = (double [ ]) arg;
            _iface.Resize( args[ 0 ], args[ 1 ] ); 
            return null;
        } 
 
        private object Rotate( object arg )
        { 
            _iface.Rotate( (double)arg );
            return null;
        }
 
        private object GetCanMove( object unused )
        { 
            return _iface.CanMove; 
        }
 
        private object GetCanResize( object unused )
        {
            return _iface.CanResize;
        } 

        private object GetCanRotate( object unused ) 
        { 
            return _iface.CanRotate;
        } 

        #endregion Private Methods

 
        //-----------------------------------------------------
        // 
        //  Private Fields 
        //
        //----------------------------------------------------- 

        #region Private Fields

        private AutomationPeer _peer; 
        private ITransformProvider _iface;
 
        #endregion Private Fields 
    }
} 

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