private void DoSearchInternal(RichCommandLineContext parentContext, IConsoleProvider standaloneConsole, bool allowCancel)
{
if (parentContext == null && standaloneConsole == null)
{
throw new ArgumentException("You must specify either parentContext or standaloneConsole");
}
else if (parentContext != null && standaloneConsole != null)
{
throw new ArgumentException("You cannot specify both parentContext and standaloneConsole, you must choose one or the other");
}
this.parentReaderContext = parentContext;
this.console = parentContext != null ? parentContext.Console : standaloneConsole;
this.menuWiper.Console = this.console;
this.resultsWiper.Console = this.console;
this.expireableAsyncRequestManager = new ExpireableAsyncRequestManager();
SelectedValue = null;
this.menuWiper.SetTopLeftFromConsole();
if (allowCancel)
{
this.console.Write(new ConsoleString("Type to search. Use up/down/enter/escape to navigate/select/cancel: ", ConsoleColor.Cyan));
}
else
{
this.console.Write(new ConsoleString("Type to search. Use up/down/enter to navigate/select: ", ConsoleColor.Cyan));
}
this.resultsWiper.SetTopLeftFromConsole();
this.resultsWiper.Left = 0;
this.resultsWiper.Top += 2;
this.searchReader = new RichTextCommandLineReader()
{
Console = this.console
};
this.searchReader.UnregisterHandler(ConsoleKey.UpArrow);
this.searchReader.UnregisterHandler(ConsoleKey.DownArrow);
this.searchReader.UnregisterHandler(ConsoleKey.Escape);
this.searchReader.UnregisterHandler(ConsoleKey.Enter);
this.searchReader.RegisterHandler(KeyHandler.FromAction((searchReaderContext) => { _MoveSelectedIndex(-1); searchReaderContext.Intercept = true; }, ConsoleKey.UpArrow));
this.searchReader.RegisterHandler(KeyHandler.FromAction((_searchReaderContext) => { _searchReaderContext.Intercept = true; _MoveSelectedIndex(1); }, ConsoleKey.DownArrow));
this.searchReader.RegisterHandler(KeyHandler.FromAction((searchReaderContext) =>
{
searchReaderContext.Intercept = true;
if (allowCancel)
{
throw new OperationCanceledException();
}
}, ConsoleKey.Escape));
this.searchReader.RegisterHandler(KeyHandler.FromAction((searchReaderContext) => { _SearchReader_HandleEnterKey(searchReaderContext); }, ConsoleKey.Enter));
this.searchReader.AfterReadKey += (searchReaderContext) => { _SearchReader_HandleKeyPressed(searchReaderContext); };
try
{
this.DoSearch(string.Empty);
this.searchReader.ReadLine();
}
finally
{
// This next lione makes sure that we ignore any in flight search calls that come back after we return control of the main
// thread. If we didn't do this then the results would get written to the screen even though the search assist code is no
// longer running.
this.expireableAsyncRequestManager.ExpireAll();
}
}
/// <summary>
/// Creates a new CLI object.
/// </summary>
public Cli()
{
Reader = new RichTextCommandLineReader() { Console = ConsoleProvider.Current };
}
/// <summary>
/// Registers a keypress with the editor.
/// </summary>
/// <param name="key">The key press info</param>
/// <param name="prototype">if specified, the foreground and background color will be taken from this prototype, otherwise the system defaults will be used</param>
public void RegisterKeyPress(ConsoleKeyInfo key, ConsoleCharacter?prototype = null)
{
Context.Reset();
Context.KeyPressed = key;
Context.CharacterToWrite = new ConsoleCharacter(Context.KeyPressed.KeyChar,
prototype.HasValue ? prototype.Value.ForegroundColor : ConsoleString.DefaultForegroundColor,
prototype.HasValue ? prototype.Value.BackgroundColor : ConsoleString.DefaultBackgroundColor);
IKeyHandler handler = null;
if (KeyHandlers.TryGetValue(Context.KeyPressed.Key, out handler) == false && RichTextCommandLineReader.IsWriteable(Context.KeyPressed))
{
WriteCharacterForPressedKey(Context);
DoSyntaxHighlighting(Context);
}
else if (handler != null)
{
handler.Handle(Context);
if (Context.Intercept == false && RichTextCommandLineReader.IsWriteable(Context.KeyPressed))
{
WriteCharacterForPressedKey(Context);
}
DoSyntaxHighlighting(Context);
}
FireValueChanged();
}
