private GraphicInstance CreateGraphicVisualizedInstance(Type type, LogicalInstance logicalInstance, DragEventArgs args)
{
Point position = args.GetPosition(this);
double width = (double)type.GetProperty("Width").GetValue(Activator.CreateInstance(type), null);
double height = (double)type.GetProperty("Height").GetValue(Activator.CreateInstance(type), null);
GraphicInstance graphicInstance = null;
if (type.IsSubclassOf(typeof(NodeType)))
{
ParentableInstance parent = (this.Content as CanvasItemsControl).FindParent(position, graphicInstance);
graphicInstance = new NodeInstance
{
X = position.X,
Y = position.Y,
Width = (width != 0 && !double.IsNaN(width)) ? width : 200,
Height = (height != 0 && !double.IsNaN(height)) ? height : 200,
LogicalInstance = logicalInstance,
Parent = parent
};
}
else
{
graphicInstance = new EdgeInstance
{
X = position.X,
Y = position.Y,
Width = (width != 0 && !double.IsNaN(width)) ? width : 200,
Height = (height != 0 && !double.IsNaN(height)) ? height : 200,
LogicalInstance = logicalInstance,
Parent = InstancesManager.Instance.CanvasRootElement
};
}
return(graphicInstance);
}
private void treeViewDDTarget_DragOver(object sender, Microsoft.Windows.DragEventArgs e)
{
var elements = VisualTreeHelper.FindElementsInHostCoordinates(e.GetPosition(treeView), treeView).Where(element => element is TreeViewItem).Cast <TreeViewItem>();
if (elements.Any())
{
UIManager.Instance.SelectedGraphicInstance = elements.First().DataContext as GraphicInstance;
}
}
