public bool Execute(string command, object[] inputs)
{
if (ConsoleStatus.IsBusy)
{
NuGetUIThreadHelper.JoinableTaskFactory.Run(() => VSOutputConsole.WriteLineAsync(Resources.PackageManagerConsoleBusy));
throw new NotSupportedException(Resources.PackageManagerConsoleBusy);
}
if (!string.IsNullOrEmpty(command))
{
WpfConsole.SetExecutionMode(true);
// Cast the ToolWindowPane to PowerConsoleToolWindow
// Access the IHost from PowerConsoleToolWindow as follows PowerConsoleToolWindow.WpfConsole.Host
// Cast IHost to IAsyncHost
// Also, register for IAsyncHost.ExecutedEnd and return only when the command is completed
var powerShellConsole = (IPrivateWpfConsole)WpfConsole;
var host = powerShellConsole.Host;
var asynchost = host as IAsyncHost;
if (asynchost != null)
{
asynchost.ExecuteEnd += PowerConsoleCommand_ExecuteEnd;
}
// Here, we store the snapshot of the powershell Console output text buffer
// Snapshot has reference to the buffer and the current length of the buffer
// And, upon execution of the command, (check the commandexecuted handler)
// the changes to the buffer is identified and copied over to the VS output window
if (powerShellConsole.InputLineStart != null &&
powerShellConsole.InputLineStart.Value.Snapshot != null)
{
_snapshot = powerShellConsole.InputLineStart.Value.Snapshot;
}
// We should write the command to the console just to imitate typical user action before executing it
// Asserts get fired otherwise. Also, the log is displayed in a disorderly fashion
NuGetUIThreadHelper.JoinableTaskFactory.Run(() => powerShellConsole.WriteLineAsync(command));
return(host.Execute(powerShellConsole, command, null));
}
return(false);
}
private void ConsoleCommandExecuteEnd(object sender, EventArgs e)
{
// Flush the change in console text buffer onto the output window for testability
// If the VSOutputConsole could not be obtained, just ignore
if (VSOutputConsole != null && _snapshot != null)
{
if (_previousPosition < _snapshot.Length)
{
VSOutputConsole.WriteLine(_snapshot.GetText(_previousPosition, (_snapshot.Length - _previousPosition)));
}
_previousPosition = _snapshot.Length;
}
((IAsyncHost)sender).ExecuteEnd -= ConsoleCommandExecuteEnd;
WpfConsole.SetExecutionMode(false);
// This does NOT imply that the command succeeded. It just indicates that the console is ready for input now
VSOutputConsole.WriteLine(Resources.PackageManagerConsoleCommandExecuted);
ExecuteEnd.Raise(this, EventArgs.Empty);
}