public override bool Execute()
{
if (DragObjects.IsNullOrEmpty() || Target == null || DragDropMethod == DragTopicsMethod.None)
{
return(false);
}
Parents = new Dictionary <ChartObject, object>();
Indices = new Dictionary <ChartObject, int>();
switch (DragDropMethod)
{
case DragTopicsMethod.Copy:
var data = new MapClipboardData(DragObjects);
NewObjects = PasteCommand.PasteObjectsTo(data, Document, Target);
AfterSelection = NewObjects;
return(true);
case DragTopicsMethod.Move:
if (DeleteCommand.DeleteObjects(DragObjects, Parents, Indices))
{
foreach (var co in DragObjects)
{
co.Parent = Target;
}
AfterSelection = DragObjects;
return(true);
}
return(false);
default:
return(false);
}
}
public static ChartObject[] PasteObjectsTo(MapClipboardData data, Document document, Topic target)
{
var chartObjects = data.GetChartObjects();
if (!chartObjects.IsNullOrEmpty())
{
var newids = new Dictionary <string, string>(StringComparer.OrdinalIgnoreCase);
foreach (var co in chartObjects)
{
if (co is Topic && !isTargetAllow((Topic)co, target))
{
continue;
}
if (!string.IsNullOrEmpty(co.ID))
{
string id = co.ID;
co.ID = document.GetNextObjectID();
newids[id] = co.ID;
}
}
foreach (var co in chartObjects)
{
if (co is Topic)
{
if (!isTargetAllow((Topic)co, target))
{
continue;
}
var t = (Topic)co;
target.Children.Add(t);
for (int j = t.Links.Count - 1; j >= 0; j--)
{
Link line = t.Links[j];
if (newids.ContainsKey(line.TargetID))
{
line.TargetID = (string)newids[line.TargetID];
}
else
{
t.Links.Remove(line);
}
}
}
else if (co is Widget)
{
target.Widgets.Add((Widget)co);
}
}
}
return(chartObjects);
}