void HexBox_OnWrite(object sender, HexBoxWriteEventArgs e)
{
var hexBox = (HexBox)sender;
var doc = hexBox.Document;
if (doc == null)
{
return;
}
if (e.IsBeforeWrite)
{
var info = new UndoInfo();
info.OriginalData = hexBox.Document.ReadBytes(e.StartOffset, e.Size);
info.OriginalCaretPosition = hexBox.CaretPosition;
e.Context[contextKey] = info;
}
else
{
var info = (UndoInfo)e.Context[contextKey];
bool updated = TryUpdateOldTextInputCommand(e.Type, hexBox, info.OriginalCaretPosition, e.StartOffset, info.OriginalData);
if (!updated)
{
ClearTextInputCommand();
var cmd = new HexBoxUndoCommand(hexBox, info.OriginalCaretPosition, e.StartOffset, info.OriginalData, GetDescription(e));
undoCommandManager.Add(cmd);
if (e.Type == HexWriteType.ByteInput || e.Type == HexWriteType.AsciiInput)
{
SetTextInputCommand(cmd);
}
}
}
}
public static void AddAndExecute(IUndoCommandManager undoCommandManager, HexDocument doc, ulong offset, byte[] data, string descr = null) {
if (doc == null)
throw new ArgumentNullException();
if (data == null || data.Length == 0)
return;
undoCommandManager.Add(new WriteHexUndoCommand(doc, offset, data, descr));
}
public static void AddAndExecute(IUndoCommandManager undoCommandManager, HexDocument doc, ulong offset, byte[] data, string descr = null)
{
if (doc == null)
{
throw new ArgumentNullException(nameof(doc));
}
if (data == null || data.Length == 0)
{
return;
}
undoCommandManager.Add(new WriteHexUndoCommand(doc, offset, data, descr));
}
