private void OnMouseDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
if (currentEntity != null && e.LeftButton == MouseButtonState.Pressed)
{
if (currentEntity is ConnectionLine && selected != null && selected is Port)
{
connect();
}
else if (currentEntity is SubDiagram)
{
SubDiagram sd = currentEntity as SubDiagram;
ScrollableCanvas sc = currentCanvas as ScrollableCanvas;
if (sc.Equals(sc, sd.ProjectItem.Canvas as ScrollableCanvas))
{
currentEntity = null;
MessageBox.Show("Нельзя добавить процесс к самому себе");
}
else
{
UndoRedoManager.putInUndoStack((ScrollableCanvas)currentCanvas);
UndoRedoManager.clearRedoStack((ScrollableCanvas)currentCanvas);
sd.canvas = currentCanvas;
drawOnCanvas(e.GetPosition(this));
}
}
else if (!(currentEntity is ConnectionLine))
{
UndoRedoManager.putInUndoStack((ScrollableCanvas)currentCanvas);
UndoRedoManager.clearRedoStack((ScrollableCanvas)currentCanvas);
drawOnCanvas(e.GetPosition(this));
}
}
}
public override bool Equals(object obj)
{
if (obj == null)
{
return(false);
}
if (obj.GetType() != typeof(ProjectItem))
{
return(false);
}
ProjectItem another = obj as ProjectItem;
// C#...
ScrollableCanvas thisCanvas = canvas as ScrollableCanvas;
ScrollableCanvas anotherCanvas = another.Canvas as ScrollableCanvas;
return(thisCanvas.Equals(thisCanvas, anotherCanvas));
}
public ProjectItem byCanvas(ScrollableCanvas canvas)
{
return(items.Where(i => canvas.Equals(i.Canvas as ScrollableCanvas, canvas)).First());
}