private bool CanBind( IWindowElement target, IWindowElement origin, BindingPosition position, out SpatialBinding targetSpatialBinding, out SpatialBinding originSpatialBinding )
{
Debug.Assert( Dispatcher.CurrentDispatcher == Application.Current.Dispatcher, "This method should only be called by the Application Thread." );
originSpatialBinding = null;
using( _logger.OpenGroup( LogLevel.Info, "Master binding..." ) )
{
if( _spatialBindings.TryGetValue( target, out targetSpatialBinding ) )
{
if( position == BindingPosition.Top && targetSpatialBinding.Top != null )
{
_logger.Trace( "{0} is already bound to {1} at position {2}.", targetSpatialBinding.Top.Window.Name, target.Name, position );
return false;
}
else if( position == BindingPosition.Left && targetSpatialBinding.Left != null )
{
_logger.Trace( "{0} is already bound to {1} at position {2}.", targetSpatialBinding.Left.Window.Name, target.Name, position );
return false;
}
else if( position == BindingPosition.Bottom && targetSpatialBinding.Bottom != null )
{
_logger.Trace( "{0} is already bound to {1} at position {2}.", targetSpatialBinding.Bottom.Window.Name, target.Name, position );
return false;
}
else if( position == BindingPosition.Right && targetSpatialBinding.Right != null )
{
_logger.Trace( "{0} is already bound to {1} at position {2}.", targetSpatialBinding.Right.Window.Name, target.Name, position );
return false;
}
else _logger.Trace( "{0} already exists in bindings but no window attached at position {1}.", target.Name, position );
}
else
{
_logger.Trace( "Fresh new window" );
}
}
using( _logger.OpenGroup( LogLevel.Info, "Slave binding..." ) )
{
if( _spatialBindings.TryGetValue( origin, out originSpatialBinding ) )
{
if( position == BindingPosition.Top && originSpatialBinding.Bottom != null )
{
_logger.Trace( "{0} is already bound to {1} at position {2}.", originSpatialBinding.Bottom.Window.Name, target.Name, position );
return false;
}
else if( position == BindingPosition.Left && originSpatialBinding.Right != null )
{
_logger.Trace( "{0} is already bound to {1} at position {2}.", originSpatialBinding.Right.Window.Name, target.Name, position );
return false;
}
else if( position == BindingPosition.Bottom && originSpatialBinding.Top != null )
{
_logger.Trace( "{0} is already bound to {1} at position {2}.", originSpatialBinding.Top.Window.Name, target.Name, position );
return false;
}
else if( position == BindingPosition.Right && originSpatialBinding.Left != null )
{
_logger.Trace( "{0} is already bound to {1} at position {2}.", originSpatialBinding.Left.Window.Name, target.Name, position );
return false;
}
else _logger.Trace( "{0} already exists in bindings but no window attached at position {1}.", origin.Name, position );
}
else
{
_logger.Trace( "Fresh new window" );
//spatialBinding = new SpatialBinding( slave );
}
}
return true;
}
public void Bind( IWindowElement master, IWindowElement slave, BindingPosition position, bool saveBinding = false )
{
if( Dispatcher.CurrentDispatcher != Application.Current.Dispatcher ) throw new InvalidOperationException( "This method should only be called by the Application Thread." );
if( master == null ) throw new ArgumentNullException( "master" );
if( slave == null ) throw new ArgumentNullException( "slave" );
//Console.WriteLine( "BIND thread id: {0} TimeSpan : {1}", Thread.CurrentThread.ManagedThreadId, DateTime.Now.Ticks );
// Spatial binding point of view
using( _logger.OpenGroup( LogLevel.Info, "Attaching {0} on {1} at {2}", master.Name, slave.Name, position.ToString() ) )
{
SpatialBinding spatialBinding = null;
SpatialBinding slaveSpatialBinding = null;
if( CanBind( master, slave, position, out spatialBinding, out slaveSpatialBinding ) )
{
_logger.Trace( "Before binding..." );
var binding = new SimpleBinding
{
Target = master,
Origin = slave,
Position = position
};
var evt = new WindowBindingEventArgs
{
Binding = binding,
BindingType = BindingEventType.Attach
};
if( BeforeBinding != null )
BeforeBinding( this, evt );
if( evt.Canceled == true )
{
_logger.Trace( "...canceled. The reason was {0}.", evt.CancelReason ?? "No Reason" );
}
else
{
if( spatialBinding == null )
{
spatialBinding = new SpatialBinding( master );
_spatialBindings.Add( master, spatialBinding );
}
if( slaveSpatialBinding == null )
{
slaveSpatialBinding = new SpatialBinding( slave );
_spatialBindings.Add( slave, slaveSpatialBinding );
}
Debug.Assert( spatialBinding != null );
Debug.Assert( slaveSpatialBinding != null );
//TODO : FIXWITHDOCKING
if( position == BindingPosition.Top )
{
spatialBinding.Top = slaveSpatialBinding;
slaveSpatialBinding.Bottom = spatialBinding;
}
if( position == BindingPosition.Left )
{
spatialBinding.Left = slaveSpatialBinding;
slaveSpatialBinding.Right = spatialBinding;
}
if( position == BindingPosition.Bottom )
{
spatialBinding.Bottom = slaveSpatialBinding;
slaveSpatialBinding.Top = spatialBinding;
}
if( position == BindingPosition.Right )
{
spatialBinding.Right = slaveSpatialBinding;
slaveSpatialBinding.Left = spatialBinding;
}
if( saveBinding )
_persistantBindings.Add( binding );
var evtAfter = new WindowBindedEventArgs
{
Binding = binding,
BindingType = BindingEventType.Attach
};
_logger.Trace( "After binding..." );
if( AfterBinding != null )
AfterBinding( this, evtAfter );
}
}
}
}
