/// <summary>
/// Creates a new instance of the ConsoleService class.
/// </summary>
/// <param name="powerShellContext">
/// The PowerShellContext that will be used for executing commands
/// against a runspace.
/// </param>
/// <param name="defaultPromptHandlerContext">
/// The default IPromptHandlerContext implementation to use for
/// displaying prompts to the user.
/// </param>
public ConsoleService(
PowerShellContext powerShellContext,
IPromptHandlerContext defaultPromptHandlerContext)
{
// Register this instance as the IConsoleHost for the PowerShellContext
this.powerShellContext = powerShellContext;
this.powerShellContext.ConsoleHost = this;
// Set the default prompt handler factory or create
// a default if one is not provided
if (defaultPromptHandlerContext == null)
{
defaultPromptHandlerContext =
new ConsolePromptHandlerContext(this);
}
this.promptHandlerContextStack.Push(
defaultPromptHandlerContext);
}
private TPromptHandler GetPromptHandler <TPromptHandler>(
Func <IPromptHandlerContext, TPromptHandler> factoryInvoker)
where TPromptHandler : PromptHandler
{
if (this.activePromptHandler != null)
{
Logger.Write(
LogLevel.Error,
"Prompt handler requested while another prompt is already active.");
}
// Get the topmost prompt handler factory
IPromptHandlerContext promptHandlerContext =
this.promptHandlerContextStack.Peek();
TPromptHandler promptHandler = factoryInvoker(promptHandlerContext);
this.activePromptHandler = promptHandler;
this.activePromptHandler.PromptCancelled += activePromptHandler_PromptCancelled;
return(promptHandler);
}
/// <summary>
/// Pushes a new IPromptHandlerContext onto the stack. This
/// is used when a prompt handler context is only needed for
/// a short series of command executions.
/// </summary>
/// <param name="promptHandlerContext">
/// The IPromptHandlerContext instance to push onto the stack.
/// </param>
public void PushPromptHandlerContext(IPromptHandlerContext promptHandlerContext)
{
// Push a new prompt handler factory for future prompts
this.promptHandlerContextStack.Push(promptHandlerContext);
}
