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);
}
}
}
}
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.ReadBytes(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);
}
}
}
void SetTextInputCommand(HexBoxUndoCommand cmd)
{
prevTextInputCmd.Target = cmd;
}
void SetTextInputCommand(HexBoxUndoCommand cmd) => prevTextInputCmd.Target = cmd;
