/// <summary>
/// Enumerates through all descendant with the ability to filter them.
/// </summary>
/// <param name="me"><see cref="ISpatialBinding"/></param>
/// <param name="filter">A filter function that take a descendant as a <see cref="IWindowElement"/>, and the <see cref="BindingPosition"/>.</param>
/// <returns>An enumeration of all descendants</returns>
public static IEnumerable<ISpatialBinding> AllDescendants( this ISpatialBinding me, BindingPosition excludes = BindingPosition.None )
{
//List<IWindowElement> toExclude = new List<IWindowElement>();
//if( excludes.HasFlag( BindingPosition.Top ) )
// foreach( var e in me.Top.Descendants( me.Window ) ) toExclude.Add( e );
//if( excludes.HasFlag( BindingPosition.Bottom ) )
//{
// foreach( var e in me.Bottom.Descendants( me.Window ) ) toExclude.Add( e );
//}
//if( excludes.HasFlag( BindingPosition.Left ) )
// foreach( var e in me.Left.Descendants( me.Window ) ) toExclude.Add( e );
//if( excludes.HasFlag( BindingPosition.Right ) )
// foreach( var e in me.Right.Descendants( me.Window ) ) toExclude.Add( e );
//return me.AllDescendants().Except( toExclude );
var v = new List<ISpatialBinding>();
BrowseExclude( me, v, excludes );
return v.Except( new[] { me } );
}
void FillContainers( IWindowElement master, IWindowElement slave, BindingPosition position )
{
UnbindButtonContainer masterContainer;
UnbindButtonContainer slaveContainer;
if( !_unbindButtonContainers.TryGetValue( slave, out slaveContainer ) )
{
slaveContainer = new UnbindButtonContainer( slave );
_unbindButtonContainers.Add( slave, slaveContainer );
}
if( !_unbindButtonContainers.TryGetValue( master, out masterContainer ) )
{
masterContainer = new UnbindButtonContainer( master );
_unbindButtonContainers.Add( master, masterContainer );
}
Debug.Assert( masterContainer.GetUnbindFromPosition( position ) == null );
Debug.Assert( slaveContainer.GetUnbindFromPosition( GetOppositePosition( position ) ) == null );
IWindowElement button = InitializeButton( master, slave, position );
masterContainer.SetButton( button, position );
slaveContainer.SetButton( button, GetOppositePosition( position ) );
button.Show();
EnableUnbindButtons();
}
void DoPlaceButtons( IWindowElement button, IWindowElement window, BindingPosition position )
{
Debug.Assert( Dispatcher.CurrentDispatcher == NoFocusManager.Default.ExternalDispatcher, "This method should only be called by the ExternalThread." );
double top = window.Top;
double height = window.Height;
double width = window.Width;
double left = window.Left;
if( position == BindingPosition.Top )
{
button.Window.Top = top - button.Height / 2;
button.Window.Left = left + width / 2 - button.Width / 2;
}
else if( position == BindingPosition.Bottom )
{
button.Window.Top = top + height - button.Height / 2;
button.Window.Left = left + width / 2 - button.Width / 2;
}
else if( position == BindingPosition.Right )
{
button.Window.Top = top + height / 2 - button.Height / 2;
button.Window.Left = left + width - button.Width / 2;
}
else if( position == BindingPosition.Left )
{
button.Window.Top = top + height / 2 - button.Width / 2;
button.Window.Left = left - button.Height / 2;
}
}
VMUnbindButton CreateVM( IWindowElement window, IWindowElement other, BindingPosition position )
{
Debug.Assert( Dispatcher.CurrentDispatcher == NoFocusManager.Default.ExternalDispatcher, "This method should only be called by the ExternalThread." );
if( position == BindingPosition.None )
return null;
Action move = null;
if( position == BindingPosition.Top )
{
move = () =>
{
WindowManager.Service.Move( window, window.Top + 10, window.Left ).Broadcast();
WindowManager.Service.Move( other, other.Top - 10, other.Left ).Broadcast();
};
}
else if( position == BindingPosition.Bottom )
{
move = () =>
{
WindowManager.Service.Move( window, window.Top - 10, window.Left ).Broadcast();
WindowManager.Service.Move( other, other.Top + 10, other.Left ).Broadcast();
};
}
else if( position == BindingPosition.Right )
{
move = () =>
{
WindowManager.Service.Move( window, window.Top, window.Left - 10 ).Broadcast();
WindowManager.Service.Move( other, other.Top, other.Left + 10 ).Broadcast();
};
}
else if( position == BindingPosition.Left )
{
move = () =>
{
WindowManager.Service.Move( window, window.Top, window.Left + 10 ).Broadcast();
WindowManager.Service.Move( other, other.Top, other.Left - 10 ).Broadcast();
};
}
return new VMUnbindButton( () =>
{
WindowBinder.Service.Unbind( window, other, false );
move();
EnableUnbindButtons();
} );
}
void CreateButton( IWindowElement master, IWindowElement slave, BindingPosition position )
{
FillContainers( master, slave, position );
}
internal static BindingPosition GetOppositePosition( BindingPosition position )
{
if( position == BindingPosition.Bottom ) return BindingPosition.Top;
if( position == BindingPosition.Top ) return BindingPosition.Bottom;
if( position == BindingPosition.Left ) return BindingPosition.Right;
if( position == BindingPosition.Right ) return BindingPosition.Left;
return BindingPosition.None;
}
public static IEnumerable<IWindowElement> SubTree( this ISpatialBinding me, BindingPosition position )
{
var visited = new List<IWindowElement>();
visited.Add( me.Window );
if( me.Top != null && position.HasFlag( BindingPosition.Top ) ) Browse( me.Top, visited );
if( me.Left != null && position.HasFlag( BindingPosition.Left ) ) Browse( me.Left, visited );
if( me.Bottom != null && position.HasFlag( BindingPosition.Bottom ) ) Browse( me.Bottom, visited );
if( me.Right != null && position.HasFlag( BindingPosition.Right ) ) Browse( me.Right, visited );
return visited.Except( new[] { me.Window } );
}
public IWindowElement GetUnbindFromPosition( BindingPosition position )
{
if( position == BindingPosition.Top ) return TopButton;
else if( position == BindingPosition.Bottom ) return BottomButton;
else if( position == BindingPosition.Left ) return LeftButton;
else if( position == BindingPosition.Right ) return RightButton;
return null;
}
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 IBindResult PreviewBind( IWindowElement target, IWindowElement origin, BindingPosition position )
{
if( Dispatcher.CurrentDispatcher != Application.Current.Dispatcher ) throw new InvalidOperationException( "This method should only be called by the Application Thread." );
if( target == null ) throw new ArgumentNullException( "master" );
if( origin == null ) throw new ArgumentNullException( "slave" );
SpatialBinding targetSpatialBinding = null;
SpatialBinding originSpatialBinding = null;
if( CanBind( target, origin, position, out targetSpatialBinding, out originSpatialBinding ) )
{
var binding = new SimpleBinding
{
Target = target,
Origin = origin,
Position = position
};
var evt = new WindowBindedEventArgs
{
Binding = binding,
BindingType = BindingEventType.Attach
};
if( PreviewBinding != null )
PreviewBinding( this, evt );
return new BindResult( this, binding );
}
return NullResult.Default;
}
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 );
}
}
}
}
//public HitTestResult( IWindowElement windowElement, IWindowElement matchedWindow, Rect enlargedRectangle, Rect overlapRectangle )
//{
// Target = windowElement;
// Origin = matchedWindow;
// if( overlapRectangle.Bottom == enlargedRectangle.Bottom && overlapRectangle.Height != enlargedRectangle.Height ) Position = BindingPosition.Top;
// else if( overlapRectangle.Top == enlargedRectangle.Top && overlapRectangle.Height != enlargedRectangle.Height ) Position = BindingPosition.Bottom;
// else if( overlapRectangle.Right == enlargedRectangle.Right && overlapRectangle.Width != enlargedRectangle.Width ) Position = BindingPosition.Left;
// else if( overlapRectangle.Left == enlargedRectangle.Left && overlapRectangle.Width != enlargedRectangle.Width ) Position = BindingPosition.Right;
// else Position = BindingPosition.None;
//}
public HitTestResult( IWindowElement origin, IWindowElement target, BindingPosition position )
{
Target = target;
Origin = origin;
Position = position;
}
private static void BrowseExclude( this ISpatialBinding me, IList<ISpatialBinding> visited, BindingPosition excludes )
{
if( !visited.Contains( me ) )
{
visited.Add( me );
if( me.Top != null && !excludes.HasFlag( BindingPosition.Top ) ) BrowseExclude( me.Top, visited, excludes );
if( me.Left != null && !excludes.HasFlag( BindingPosition.Left ) ) BrowseExclude( me.Left, visited, excludes );
if( me.Bottom != null && !excludes.HasFlag( BindingPosition.Bottom ) ) BrowseExclude( me.Bottom, visited, excludes );
if( me.Right != null && !excludes.HasFlag( BindingPosition.Right ) ) BrowseExclude( me.Right, visited, excludes );
}
}
WindowElement InitializeButton( IWindowElement window, IWindowElement other, BindingPosition position )
{
Debug.Assert( Dispatcher.CurrentDispatcher == NoFocusManager.Default.ExternalDispatcher, "This method should only be called by the ExternalThread." );
WindowElement button = null;
button = new WindowElement( new UnbindButtonView()
{
DataContext = CreateVM( window, other, position )
}, "UnbindButton" );
DoPlaceButtons( button, window, position );
TopMostService.Service.RegisterTopMostElement( "30", button.Window );
return button;
}
public void Add( string target, string origin, BindingPosition position )
{
Bindings.Add( new SerializableBinding( target, origin, position ) );
}
public IWindowElement this[BindingPosition p]
{
get
{
return GetUnbindFromPosition( p );
}
set
{
SetButton( value, p );
}
}
internal SerializableBinding( string target, string origin, BindingPosition position )
{
Target = target;
Origin = origin;
Position = position;
}
public void SetButton( IWindowElement button, BindingPosition position )
{
Debug.Assert( position != BindingPosition.None );
if( position == BindingPosition.Top ) TopButton = button;
else if( position == BindingPosition.Bottom ) BottomButton = button;
else if( position == BindingPosition.Left ) LeftButton = button;
else if( position == BindingPosition.Right ) RightButton = button;
}
void ResizingWindow( ISpatialBinding binding, BindingPosition masterPosition = BindingPosition.None )
{
Debug.Assert( Dispatcher.CurrentDispatcher == Application.Current.Dispatcher, "This method should only be called by the ExternalThread." );
IWindowElement reference = binding.Window;
IWindowElement slave = null;
if( masterPosition != BindingPosition.Top && binding.Top != null )
{
slave = binding.Top.Window;
if( reference.Height != slave.Height )
{
WindowManager.Resize( slave, reference.Width, slave.Height );
ResizingWindow( binding.Top, BindingPosition.Bottom );
}
WindowManager.Move( slave, reference.Top - slave.Height, reference.Left );
}
if( masterPosition != BindingPosition.Bottom && binding.Bottom != null )
{
slave = binding.Bottom.Window;
if( reference.Height != slave.Height )
{
WindowManager.Resize( slave, reference.Width, slave.Height );
ResizingWindow( binding.Bottom, BindingPosition.Top );
}
WindowManager.Move( slave, reference.Top + reference.Height, reference.Left );
}
if( masterPosition != BindingPosition.Left && binding.Left != null )
{
slave = binding.Left.Window;
if( reference.Width != slave.Width )
{
WindowManager.Resize( slave, slave.Width, reference.Height );
ResizingWindow( binding.Left, BindingPosition.Right );
}
WindowManager.Move( slave, reference.Top, reference.Left - slave.Width );
}
if( masterPosition != BindingPosition.Right && binding.Right != null )
{
slave = binding.Right.Window;
if( reference.Width != slave.Width )
{
WindowManager.Resize( slave, slave.Width, reference.Height );
ResizingWindow( binding.Right, BindingPosition.Left );
}
WindowManager.Move( slave, reference.Top, reference.Left + reference.Width );
}
}
