void HexBox_OnWrite(object sender, HexBoxWriteEventArgs e) { const string key = "HexBoxUndo"; var hts = (HexTabState)TabState.GetTabState((HexBox)sender); var doc = hts.HexBox.Document; if (doc == null) return; if (e.IsBeforeWrite) { var info = new UndoInfo(); info.OriginalData = hts.HexBox.Document.Read(e.StartOffset, e.Size); info.OriginalCaretPosition = hts.HexBox.CaretPosition; e.Context[key] = info; } else { var info = (UndoInfo)e.Context[key]; bool updated = TryUpdateOldTextInputCommand(e.Type, hts.HexBox, info.OriginalCaretPosition, e.StartOffset, info.OriginalData); if (!updated) { ClearTextInputCommand(); var cmd = new HexBoxUndoCommand(hts.HexBox, info.OriginalCaretPosition, e.StartOffset, info.OriginalData, GetDescription(e)); UndoCommandManager.Instance.Add(cmd); if (e.Type == HexWriteType.ByteInput || e.Type == HexWriteType.AsciiInput) SetTextInputCommand(cmd); } } }
static string GetDescription(HexBoxWriteEventArgs e) { switch (e.Type) { case HexWriteType.Paste: return string.Format("Paste {0} bytes @ {1:X8}", e.Size, e.StartOffset); case HexWriteType.ByteInput: return "Insert Bytes"; case HexWriteType.AsciiInput: return "Insert ASCII"; case HexWriteType.Fill: return string.Format("Fill {0} bytes @ {1:X8}", e.Size, e.StartOffset); default: return null; } }
Dictionary<object, object> NotifyWrite(HexWriteType type, ulong offs, int count, bool isBeforeWrite, Dictionary<object, object> context) { var ea = new HexBoxWriteEventArgs(type, offs, count, isBeforeWrite, context); if (OnWrite != null) OnWrite(this, ea); return ea.Context; }