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.\" ========================================================================
.\"
.IX Title "App::Info::Handler::Prompt 3pm"
.TH App::Info::Handler::Prompt 3pm "2020-01-23" "perl v5.30.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.SH "NAME"
App::Info::Handler::Prompt \- Prompting App::Info event handler
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\& use App::Info::Category::FooApp;
\& use App::Info::Handler::Print;
\&
\& my $prompter = App::Info::Handler::Print\->new;
\& my $app = App::Info::Category::FooApp\->new( on_unknown => $prompter );
\&
\& # Or...
\& my $app = App::Info::Category::FooApp\->new( on_confirm => \*(Aqprompt\*(Aq );
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
App::Info::Handler::Prompt objects handle App::Info events by printing their
messages to \f(CW\*(C`STDOUT\*(C'\fR and then accepting a new value from \f(CW\*(C`STDIN\*(C'\fR. The new
value is validated by any callback supplied by the App::Info concrete subclass
that triggered the event. If the value is valid, App::Info::Handler::Prompt
assigns the new value to the event request. If it isn't it prints the error
message associated with the event request, and then prompts for the data
again.
.PP
Although designed with unknown and confirm events in mind,
App::Info::Handler::Prompt handles info and error events as well. It will
simply print info event messages to \f(CW\*(C`STDOUT\*(C'\fR and print error event messages
to \f(CW\*(C`STDERR\*(C'\fR. For more interesting info and error event handling, see
App::Info::Handler::Print and
App::Info::Handler::Carp.
.PP
Upon loading, App::Info::Handler::Print registers itself with
App::Info::Handler, setting up a single string, \*(L"prompt\*(R", that can be passed
to an App::Info concrete subclass constructor. This string is a shortcut that
tells App::Info how to create an App::Info::Handler::Print object for handling
events.
.SH "INTERFACE"
.IX Header "INTERFACE"
.SS "Constructor"
.IX Subsection "Constructor"
\fInew\fR
.IX Subsection "new"
.PP
.Vb 1
\& my $prompter = App::Info::Handler::Prompt\->new;
.Ve
.PP
Constructs a new App::Info::Handler::Prompt object and returns it. No special
arguments are required.
.SH "SUPPORT"
.IX Header "SUPPORT"
This module is stored in an open GitHub
repository . Feel free to fork and
contribute!
.PP
Please file bug reports via GitHub
Issues or by sending mail to
bug\-App\-Info@rt.cpan.org .
.SH "AUTHOR"
.IX Header "AUTHOR"
David E. Wheeler
.SH "SEE ALSO"
.IX Header "SEE ALSO"
App::Info documents the event handling interface.
.PP
App::Info::Handler::Carp handles events by
passing their messages Carp module functions.
.PP
App::Info::Handler::Print handles events by
printing their messages to a file handle.
.PP
App::Info::Handler describes how to implement custom
App::Info event handlers.
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
Copyright (c) 2002\-2011, David E. Wheeler. Some Rights Reserved.
.PP
This module is free software; you can redistribute it and/or modify it under the
same terms as Perl itself.