public void RaiseUndoRedoPropertyChangeEvent(UndoRedoCommandType actionType)
{
if (!string.IsNullOrEmpty(CurrentActionName))
{
UndoRedoPropertyChangedEventArgs lastObject = null;
if (actionType == UndoRedoCommandType.Undo && UnDoMainDictionaryData.Count() > 0)
{
lastObject = UnDoMainDictionaryData[CurrentActionName].LastOrDefault();
}
else if (actionType == UndoRedoCommandType.Redo && ReDoMainDictionaryData.Count() > 0)
{
lastObject = ReDoMainDictionaryData[CurrentActionName].LastOrDefault();
}
if (lastObject != null)
{
AddAndRemoveObjectInUndoRedoList(lastObject, CurrentActionName, (actionType == UndoRedoCommandType.Undo) ? UndoRedoCommandType.Redo : UndoRedoCommandType.Undo);
lastObject = UnDoMainDictionaryData[CurrentActionName].LastOrDefault();
if (lastObject != null)
{
this.IsBypassRequired = true;
if (UndoRedoOperationTriggerChanged != null)
{
UndoRedoOperationTriggerChanged.Invoke(CurrentActionName, lastObject);
}
this.IsBypassRequired = false;
}
}
}
}
public void AddAndRemoveObjectInUndoRedoList(UndoRedoPropertyChangedEventArgs objectTochange, string actionName, UndoRedoCommandType actionType)
{
if (!string.IsNullOrEmpty(actionName) && CurrentActionName != actionName)
{
this.RefreshUndoRedoDictionary();
this.CurrentActionName = actionName;
}
if (!this.IsBypassRequired && !string.IsNullOrEmpty(actionName))
{
if (actionType == UndoRedoCommandType.Undo && UnDoMainDictionaryData.ContainsKey(actionName) && UnDoMainDictionaryData[actionName].Count() < ThresholdObjectlimit)
{
RemoveFromUndoRedoList(UndoRedoCommandType.Redo, actionName, objectTochange);
objectTochange.CommandType = actionType;
UnDoMainDictionaryData[actionName].Add(objectTochange);
}
else if (actionType == UndoRedoCommandType.Redo && ReDoMainDictionaryData.ContainsKey(actionName) && ReDoMainDictionaryData[actionName].Count() < ThresholdObjectlimit)
{
RemoveFromUndoRedoList(UndoRedoCommandType.Undo, actionName, objectTochange);
objectTochange.CommandType = actionType;
ReDoMainDictionaryData[actionName].Add(objectTochange);
}
else if (actionType == UndoRedoCommandType.Undo && UnDoMainDictionaryData.ContainsKey(actionName) && UnDoMainDictionaryData[actionName].Count() == ThresholdObjectlimit)
{
var firstObject = UnDoMainDictionaryData[actionName].Last();
UnDoMainDictionaryData[actionName].Remove(firstObject);
RemoveFromUndoRedoList(UndoRedoCommandType.Redo, actionName, objectTochange);
objectTochange.CommandType = actionType;
UnDoMainDictionaryData[actionName].Add(objectTochange);
}
else if (actionType == UndoRedoCommandType.Redo && ReDoMainDictionaryData.ContainsKey(actionName) && ReDoMainDictionaryData[actionName].Count() == ThresholdObjectlimit)
{
var firstObject = ReDoMainDictionaryData[actionName].Last();
ReDoMainDictionaryData[actionName].Remove(firstObject);
RemoveFromUndoRedoList(UndoRedoCommandType.Undo, actionName, objectTochange);
objectTochange.CommandType = actionType;
ReDoMainDictionaryData[actionName].Add(objectTochange);
}
else if ((actionType == UndoRedoCommandType.Redo && !ReDoMainDictionaryData.ContainsKey(actionName)) || (actionType == UndoRedoCommandType.Undo && !UnDoMainDictionaryData.ContainsKey(actionName)))
{
if (actionType == UndoRedoCommandType.Redo)
{
RemoveFromUndoRedoList(UndoRedoCommandType.Undo, actionName, objectTochange);
}
else if (actionType == UndoRedoCommandType.Undo)
{
RemoveFromUndoRedoList(UndoRedoCommandType.Redo, actionName, objectTochange);
}
objectTochange.CommandType = actionType;
AddFirstTimeInUndoRedoList(actionType, actionName, objectTochange);
}
}
}
void RemoveFromUndoRedoList(UndoRedoCommandType actionType, string actionName, UndoRedoPropertyChangedEventArgs objectTochange)
{
if (actionType == UndoRedoCommandType.Undo && UnDoMainDictionaryData.ContainsKey(actionName))
{
var objToRemove = UnDoMainDictionaryData[actionName].Where(x => (x.Value == objectTochange.Value)).FirstOrDefault();
if (objToRemove != null)
{
UnDoMainDictionaryData[actionName].Remove(objToRemove);
}
}
else if (actionType == UndoRedoCommandType.Redo && ReDoMainDictionaryData.ContainsKey(actionName))
{
if (ReDoMainDictionaryData.ContainsKey(actionName))
{
var objToRemove = ReDoMainDictionaryData[actionName].Where(x => (x.Value == objectTochange.Value)).FirstOrDefault();
if (objToRemove != null)
{
ReDoMainDictionaryData[actionName].Remove(objToRemove);
}
}
}
}
void AddFirstTimeInUndoRedoList(UndoRedoCommandType actionType, string actionName, UndoRedoPropertyChangedEventArgs objectTochange)
{
List <UndoRedoPropertyChangedEventArgs> undoRedoItems = new List <UndoRedoPropertyChangedEventArgs>();
undoRedoItems.Add(objectTochange);
if (actionType == UndoRedoCommandType.Undo)
{
UnDoMainDictionaryData.Add(actionName, undoRedoItems);
}
else
{
ReDoMainDictionaryData.Add(actionName, undoRedoItems);
}
}