private void PerformUndo(UndoHistoryItem item)
{
undoInProgress.OnNext(true);
var undoAction = item.UndoAction;
undoAction(item);
undoInProgress.OnNext(false);
}
private void UndoDefInserted(UndoHistoryItem item)
{
var def = item.DefToUndo;
var ruleApp = RuleApplicationService.RuleApplicationDef;
var lookedUpDef = ruleApp.LookupItem(def.Guid);
if (lookedUpDef == null)
{
LogEvent("{0} does not exist in this RuleAppDef. Nothing to undo.", def.Name);
return;
}
SelectionManager.SelectedItem = lookedUpDef.Parent;
RuleApplicationService.Controller.RemoveDef(lookedUpDef);
LogEvent("(UndoDefInserted) - Removed Def {0}", def.Name);
}
private void UndoDefRemoved(UndoHistoryItem item)
{
var def = item.DefToUndo;
var ruleApp = RuleApplicationService.RuleApplicationDef;
if (ruleApp.LookupItem(def.Guid) != null)
{
LogEvent("{0} already exists in rule application def. Cannot undo a deletion when the target element is already present", def.Name);
return;
}
var parent = ruleApp.LookupItem(item.ParentGuid) ?? RuleApplicationService.RuleApplicationDef;
RuleApplicationService.Controller.InsertDef(def, parent, item.OriginalIndex);
SelectionManager.SelectedItem = def;
LogEvent("Added Def {0} to parent {1} at position {2}", def.Name, parent.Name, item.OriginalIndex);
}
