public override CommandResult Invoke(Guid group, int id, object inputArg, ref object outputArg)
{
if (!TaskAvailable())
{
return(CommandResult.Disabled);
}
IMarkdownFlavorPublishHandler flavorHandler = GetFlavorHandler(TextView.TextBuffer);
if (flavorHandler == null)
{
return(CommandResult.Disabled);
}
var workflow = _workflowProvider.GetOrCreate();
_lastCommandTask = Task.Run(async() => {
// Get list of installed packages and verify that all the required ones are installed
var packages = await workflow.Packages.GetInstalledPackagesAsync();
if (packages.Any(p => p.Package.EqualsIgnoreCase(flavorHandler.RequiredPackageName)))
{
// Text buffer operations should be performed in UI thread
await AppShell.SwitchToMainThreadAsync();
if (await CheckPrerequisitesAsync())
{
var textBuffer = SaveFile();
if (textBuffer != null)
{
var inputFilePath = textBuffer.GetFilePath();
_outputFilePath = Path.ChangeExtension(inputFilePath, FileExtension);
try {
_fs.DeleteFile(_outputFilePath);
} catch (IOException ex) {
AppShell.ShowErrorMessage(ex.Message);
return;
}
var session = workflow.RSession;
await flavorHandler.PublishAsync(session, AppShell, _fs, inputFilePath, _outputFilePath, Format, textBuffer.GetEncoding()).ContinueWith(t => LaunchViewer());
}
}
}
else
{
await AppShell.ShowErrorMessageAsync(Resources.Error_PackageMissing.FormatInvariant(flavorHandler.RequiredPackageName));
}
});
return(CommandResult.Executed);
}
