protected void DeleteSelectedText()
{
if (!Caret.HasSelection())
{
return;
}
var start = Math.Min(Caret.SelectionStartOffset, Caret.SelectionEndOffset);
var end = Math.Max(Caret.SelectionStartOffset, Caret.SelectionEndOffset);
Document.DeleteAt(start, end - start);
}
void OnDeleteKey(KeyEventArgs args)
{
if (!ReadOnly)
{
if (Caret.HasSelection())
{
DeleteSelectedText();
}
else if (Caret.SelectionEndOffset < Document.TextLength)
{
Document.DeleteAt(Caret.SelectionEndOffset, 1);
}
}
}
void OnBackKey(KeyEventArgs args)
{
if (!ReadOnly)
{
if (Caret.HasSelection())
{
DeleteSelectedText();
}
else if (Caret.SelectionEndOffset > 0)
{
Document.DeleteAt(Caret.SelectionEndOffset - 1, 1);
}
}
}
public void CopySelectedText()
{
if (!Caret.HasSelection())
{
return;
}
var selectedText = Caret.TextForSelection(Document);
var clipboardService = Screen?.WindowService.Clipboard;
if (clipboardService != null)
{
clipboardService.ClipboardText = selectedText;
}
}