/// <summary>
/// Records the given operation
/// </summary>
private static void RecordOperation (UndoProRecord operation)
{
// First, make sure the internal records representation is updated
UpdateUndoRecords ();
// Make sure this record isn't included in the previous group
Undo.IncrementCurrentGroup ();
// Create a dummy record with the given label
if (dummyObject == null)
dummyObject = new Texture2D (8, 8);
Undo.RegisterCompleteObjectUndo (dummyObject, operation.label);
// Make sure future undo records are not included into this group
Undo.FlushUndoRecordObjects ();
Undo.IncrementCurrentGroup ();
// Now get the new Undo state
records.undoState = FetchUndoState ();
// Record operation internally
records.UndoRecordsAdded (1);
records.undoProRecords.Add (operation);
if (OnAddUndoRecord != null)
OnAddUndoRecord.Invoke (new string[] { operation.label }, true);
}
/// <summary>
/// Updates the internal record-stack accounting for the given amount of default undo entries
/// </summary>
public void UndoRecordsAdded(int addedRecordsCount)
{
if (undoState.redoRecords.Count == 0)
{
ClearRedo();
}
//Debug.Log ("Shifted records by " + addedRecordsCount + " because of new added undo records!");
for (int recCnt = 0; recCnt < undoProRecords.Count; recCnt++)
{
UndoProRecord record = undoProRecords[recCnt];
if (record.relativeStackPos <= 0)
{
record.relativeStackPos -= addedRecordsCount;
}
}
}
/// <summary>
/// Updates onternal records to represent the undo/redo operation represented by a opShift (negative: Undo; positive: Redo);
/// Returns the records which are affected by this undo/redo operation (switched from Undo-stack to redo or vice versa)
/// </summary>
public List <UndoProRecord> PerformOperationInternal(int opShift, int anomalyAddedCount)
{
if (opShift == 0)
{
return(new List <UndoProRecord> ());
}
// Anomaly
bool opDir = opShift <= 0;
//if (anomalyAddedCount < 0)
// opDir = !opDir;
int anomalyShift = (opDir? anomalyAddedCount : -anomalyAddedCount);
#if UNDO_DEBUG
if (anomalyAddedCount != 0)
{
Debug.Log("Anomaly of " + anomalyAddedCount + "; OpDir: " + opDir + "; Shift: " + anomalyShift);
}
#endif
List <UndoProRecord> operatedRecords = new List <UndoProRecord> ();
for (int recCnt = 0; recCnt < undoProRecords.Count; recCnt++)
{
UndoProRecord record = undoProRecords[recCnt];
int prevInd = record.relativeStackPos;
record.relativeStackPos -= opShift;
if (anomalyAddedCount != 0 && isUndo(prevInd) != opDir) // Anomaly
{
record.relativeStackPos += anomalyShift;
}
if (isUndo(prevInd) != isUndo(record.relativeStackPos)) // affected by this undo/redo operation
{
operatedRecords.Add(record);
}
}
return(operatedRecords);
}