public HexBoxState(HexBoxState other)
{
this.TopOffset = other.TopOffset;
this.Column = other.Column;
this.StartOffset = other.StartOffset;
this.EndOffset = other.EndOffset;
this.CaretPosition = other.CaretPosition;
this.Selection = other.Selection;
}
public bool HandleTextInput(string text) {
if (Document == null)
return false;
bool unselect = false;
switch (CaretPosition.Kind) {
case HexBoxPositionKind.HexByte:
foreach (var c in text) {
if (c == ' ')
MoveCaretRight();
else if (HandleHexByteInput(c))
unselect = true;
}
break;
case HexBoxPositionKind.Ascii:
foreach (var c in text) {
if (HandleHexAsciiInput(c))
unselect = true;
}
break;
default:
throw new InvalidOperationException();
}
if (unselect)
Selection = null;
return true;
}
void FillBytes(byte b) {
if (Selection == null) {
FillBytes(CaretPosition.Offset, CaretPosition.Offset, b);
SetCaretPosition(new HexBoxPosition(NumberUtils.AddUInt64(CaretPosition.Offset, 1), CaretPosition.Kind, 0));
}
else
FillBytes(Selection.Value.StartOffset, Selection.Value.EndOffset, b);
Selection = null;
}
public void Paste(byte[] data) {
if (!CanPaste(data))
return;
ulong offs = CaretPosition.Offset;
var ctx = NotifyBeforeWrite(HexWriteType.Paste, offs, data.Length);
Document.Write(offs, data, 0, data.Length);
SetCaretPosition(new HexBoxPosition(NumberUtils.AddUInt64(offs, (ulong)data.Length), CaretPosition.Kind, 0));
Selection = null;
BringCaretIntoView();
NotifyAfterWrite(HexWriteType.Paste, offs, data.Length, ctx);
}
public void SelectAll() {
Selection = new HexSelection(StartOffset, EndOffset);
SetCaretPosition(MoveToEndOfSelection(CaretPosition));
}
void SelectText(Action action) {
var pos = CaretPosition;
var oldSel = Selection;
action();
Debug.Assert(oldSel == Selection);
if (CaretPosition == pos)
return;
if (Selection == null)
Selection = new HexSelection(pos.Offset, CaretPosition.Offset);
else
Selection = new HexSelection(Selection.Value.From, CaretPosition.Offset);
}
void UnselectText(Action action, bool forceUnselect = true) {
var oldPos = CaretPosition;
action();
if (forceUnselect || oldPos != CaretPosition)
Selection = null;
}
void UpdateSelection() {
// The prop will verify the selection and update it if necessary
Selection = Selection;
}