/// <summary>
/// PasteCommand can execute.
/// </summary>
private bool PasteCommand_CanExecute()
{
List <ModelElement> modelElements = new List <ModelElement>();
if (this.SelectedItem is ModelTreeViewModel)
{
foreach (BaseModelElementViewModel vm in this.ModelTreeViewModel.SelectedItems)
{
if (vm.GetHostedElement() == null)
{
continue;
}
modelElements.Add(vm.GetHostedElement());
}
}
else if (this.SelectedItem is DiagramViewModel)
{
foreach (BaseModelElementViewModel vm in this.DiagramViewModel.SelectedItems)
{
if (vm.GetHostedElement() == null)
{
continue;
}
modelElements.Add(vm.GetHostedElement());
}
}
if (modelElements.Count == 0)
{
modelElements.Add(this.ModelContext);
}
if (modelElements.Count == 1)
{
try
{
System.Windows.IDataObject idataObject = System.Windows.Clipboard.GetDataObject();
if (idataObject != null)
{
CopyAndPasteOperations.ProcessMoveMode(idataObject);
return(CopyAndPasteOperations.CanExecutePaste(modelElements[0], idataObject));
}
}
catch { }
return(false);
}
return(false);
}
/// <summary>
/// Paste command can execute.
/// </summary>
public virtual bool OnPasteCommandCanExecute()
{
try
{
System.Windows.IDataObject idataObject = System.Windows.Clipboard.GetDataObject();
if (this.ViewModelStore != null)
{
if (this.EventManager != null)
{
CopyAndPasteOperations.ProcessMoveMode(this.EventManager, idataObject);
}
}
else
{
}
if (idataObject != null)
{
return(CopyAndPasteOperations.CanExecutePaste(this.Element, idataObject));
}
}
catch { }
return(false);
}
