public void ClearView()
{
if (_window._stdInputStart != null)
{
CancelStandardInput();
}
_window._adornmentToMinimize = false;
InlineAdornmentProvider.RemoveAllAdornments(_window._textView);
// remove all the spans except our initial span from the projection buffer
_window._promptLineMapping.Clear();
UncommittedInput = null;
// Clear the projection and buffers last as this might trigger events that might access other state of the REPL window:
RemoveProtection(_window._outputBuffer, _outputProtection);
RemoveProtection(_window._standardInputBuffer, StandardInputProtection);
using (var edit = _window._outputBuffer.CreateEdit(EditOptions.None, null, s_suppressPromptInjectionTag))
{
edit.Delete(0, _window._outputBuffer.CurrentSnapshot.Length);
edit.Apply();
}
_window._buffer.Reset();
OutputClassifierProvider.ClearSpans(_window._outputBuffer);
_outputTrackingCaretPosition = 0;
using (var edit = _window._standardInputBuffer.CreateEdit(EditOptions.None, null, s_suppressPromptInjectionTag))
{
edit.Delete(0, _window._standardInputBuffer.CurrentSnapshot.Length);
edit.Apply();
}
RemoveProjectionSpans(0, _window._projectionSpans.Count);
// Insert an empty output buffer.
// We do it for two reasons:
// 1) When output is written to asynchronously we need a buffer to store it.
// This may happen when clearing screen while background thread is writing to the console.
// 2) We need at least one non-inert span due to bugs in projection buffer.
AppendNewOutputProjectionBuffer();
_window._history.ForgetOriginalBuffers();
// If we were waiting for input, we need to restore the prompt that we just cleared.
// If we are in any other state, then we'll let normal transitions trigger the next prompt.
if (State == State.WaitingForInput)
{
PrepareForInput();
}
}
void IInteractiveWindow.Write(UIElement element)
{
if (element == null)
{
return;
}
_buffer.Flush();
InlineAdornmentProvider.AddInlineAdornment(_textView, element, OnAdornmentLoaded);
_adornmentToMinimize = true; // TODO (https://github.com/dotnet/roslyn/issues/4044): probably ui only
WriteLine(string.Empty);
WriteLine(string.Empty);
}
private void FinishCurrentSubmissionInput()
{
_window.AppendLineNoPromptInjection(_window._currentLanguageBuffer);
ApplyProtection(_window._currentLanguageBuffer, regions: null);
if (_window._adornmentToMinimize)
{
// TODO (tomat): remember the index of the adornment(s) in the current output and minimize those instead of the last one
InlineAdornmentProvider.MinimizeLastInlineAdornment(_window._textView);
_window._adornmentToMinimize = false;
}
NewOutputBuffer();
}