override internal ICutViewState visitPaste2Normal(PasteState pasteState)
{
var normalState = new NormalState();
normalState.Operation = "Select a node to cut";
normalState.HiddenStatus = "Choices";
normalState.selectedItem = pasteState.selectedItem;
normalState.StateText = "Selected: " + normalState.selectedItem.Name;
return(normalState);
}
override internal ICutViewState visitCut2Paste(CutState cutState)
{
if (cutState.selectedItem.Name.Equals(cutState.cutFrom))
{
cutState.StateText = "Selected: " + cutState.selectedItem.Name;
return(cutState);
}
var pasteState = new PasteState();
pasteState.selectedItem = cutState.selectedItem;
pasteState.operation = cutState.operation;
pasteState.pasteTo = cutState.selectedItem.Name;
if (cutState.fromParent != null)
{
var foundFrom = cutState.fromParent.TreeItems.First(t => t.Name.Equals(cutState.cutFrom));
if (foundFrom == null)
{
cutState.StateText = "Error! From " + cutState.cutFrom + " to " + pasteState.pasteTo;
return(cutState);
}
else
{
var checkParent = pasteState.selectedItem.parent;
bool checkCyclic = false;
while (checkParent != null)
{
if (foundFrom.Name.Equals(checkParent.Name))
{
checkCyclic = true;
break;
}
checkParent = checkParent.parent;
}
if (checkCyclic)
{
cutState.StateText = "Cyclic Reference! From " + cutState.cutFrom + " to " + pasteState.pasteTo;
return(cutState);
}
cutState.fromParent.TreeItems.Remove(foundFrom);
pasteState.selectedItem.TreeItems.Add(foundFrom);
foundFrom.parent = cutState.selectedItem;
pasteState.Operation = "Done! From " + cutState.cutFrom + " to " + pasteState.pasteTo;
}
}
else
{
cutState.StateText = "Error! From " + cutState.cutFrom + " to " + pasteState.pasteTo;
return(cutState);
}
pasteState.StateText = "Selected: " + pasteState.selectedItem.Name;
return(pasteState);
}
internal abstract A visitPaste2Normal(PasteState pasteState);