private void Shutdown()
{
this.UnsubscribeSnoopUiEvents();
this.ProviderLocationChanged -= this.OnProviderLocationChanged;
this.host = null;
this.runspace?.Dispose();
this.runspace = null;
this.isStarted = false;
}
/// <summary>
/// Initiates the startup routine and configures the runspace for use.
/// </summary>
private void Start(SnoopUI snoopUi)
{
if (this.isStarted)
{
return;
}
if (ShellConstants.IsPowerShellInstalled == false)
{
return;
}
this.isStarted = true;
this.snoopUi = snoopUi;
{
// ignore execution-policy
var iis = InitialSessionState.CreateDefault();
iis.AuthorizationManager = new AuthorizationManager(Guid.NewGuid().ToString());
iis.Providers.Add(new SessionStateProviderEntry(ShellConstants.DriveName, typeof(VisualTreeProvider), string.Empty));
this.host = new SnoopPSHost(this.outputTextBox, x => this.outputTextBox.AppendText(x));
this.runspace = RunspaceFactory.CreateRunspace(this.host, iis);
this.runspace.ThreadOptions = PSThreadOptions.UseCurrentThread;
#if NET40
this.runspace.ApartmentState = System.Threading.ApartmentState.STA;
#endif
this.runspace.Open();
}
{
snoopUi.PropertyChanged += this.OnSnoopUiOnPropertyChanged;
// allow scripting of the host controls
this.SetVariable("snoopui", snoopUi);
this.SetVariable("ui", this);
this.SetVariable(ShellConstants.Root, snoopUi.Root);
this.SetVariable(ShellConstants.Selected, snoopUi.CurrentSelection);
// marshall back to the UI thread when the provider notifiers of a location change
var action = new Action <TreeItem>(item => this.RunInDispatcherAsync(() => this.ProviderLocationChanged?.Invoke(item)));
this.SetVariable(ShellConstants.LocationChangedActionKey, action);
var folder = Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "..", "Scripts");
this.Invoke($"import-module \"{Path.Combine(folder, ShellConstants.SnoopModule)}\"");
this.outputTextBox.Clear();
this.Invoke("write-host 'Welcome to the Snoop PowerShell console!'");
this.Invoke("write-host '----------------------------------------'");
this.Invoke($"write-host 'To get started, try using the ${ShellConstants.Root} and ${ShellConstants.Selected} variables.'");
this.FindAndLoadProfile(folder);
this.NotifySelected(snoopUi.CurrentSelection);
}
{
// sync the current location
snoopUi.Tree.SelectedItemChanged += this.OnSnoopUiSelectedItemChanged;
this.ProviderLocationChanged += this.OnProviderLocationChanged;
// clean up garbage!
snoopUi.Closed += this.OnSnoopUiClosed;
}
}