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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
//
//
//
// Description: Transform pattern provider wrapper for WCP
//
//
using System.Windows.Threading;
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
}
}
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