public async Task ViewFile(string fileName, string tabName, bool deleteFile, CancellationToken cancellationToken)
{
await _coreShell.SwitchToMainThreadAsync(cancellationToken);
try {
if (File.Exists(fileName))
{
FileViewer.ViewFile(fileName, tabName);
if (deleteFile)
{
File.Delete(fileName);
}
}
} catch (Exception ex) when(ex is IOException || ex is UnauthorizedAccessException)
{
_coreShell.ShowErrorMessage(ex.Message);
}
}
public async Task ViewAsync(string expression, string title)
{
var evaluation = await EvaluateAsync(expression, REvaluationResultProperties.ExpressionProperty, null);
if (evaluation == null || string.IsNullOrEmpty(evaluation.Expression))
{
return;
}
var functionName = evaluation.Expression;
var session = _workflow.RSession;
string functionCode = await GetFunctionCode(functionName);
if (!string.IsNullOrEmpty(functionCode))
{
string tempFile = Path.ChangeExtension(Path.GetTempFileName(), ".r");
try {
if (File.Exists(tempFile))
{
File.Delete(tempFile);
}
using (var sw = new StreamWriter(tempFile)) {
sw.Write(functionCode);
}
await VsAppShell.Current.SwitchToMainThreadAsync();
FileViewer.ViewFile(tempFile, functionName);
try {
File.Delete(tempFile);
} catch (IOException) { } catch (UnauthorizedAccessException) { }
} catch (IOException) { } catch (UnauthorizedAccessException) { }
}
}