UI::Dialog::Backend::Whiptail(3) Backend for the Whiptail dialog variant

SYNOPSIS


use UI::Dialog::Backend::Whiptail;
my $d = new UI::Dialog::Backend::Whiptail ( backtitle => 'Demo',
title => 'Default' );
$d->msgbox( title => 'Welcome!', text => 'Welcome one and all!' );

ABSTRACT

UI::Dialog::Backend::Whiptail is the UI::Dialog backend for the Whiptail dialog variant. While this module is used through UI::Dialog or any other loader module only the compatible methods are ever accessible. However, when using this module directly in your application (as in the SYNOPSIS example) you are given access to all the options and features of the real whiptail(1) application.

DESCRIPTION

This dialog variant is the staple of the Debian console apt/dpkg interface. There isn't very much interesting about this particular backend. This is very much a basic dialog variant in comparison to things like Xdialog and cDialog.

EXPORT

 None

INHERITS

 UI::Dialog::Backend

CONSTRUCTOR

new( @options )

EXAMPLE
 my $d = new( title => 'Default Title', backtitle => 'Backtitle',
              width => 65, height => 20, listheight => 5 );
DESCRIPTION
This is the Class Constructor method. It accepts a list of key => value pairs and uses them as the defaults when interacting with the various widgets.
RETURNS
 A blessed object reference of the UI::Dialog::Backend::Whiptail class.
OPTIONS
The (...)'s after each option indicate the default for the option. An * denotes support by all the widget methods on a per-use policy defaulting to the values decided during object creation.
debug = 0,1,2 (0)
literal = 0,1 (0)
backtitle = "backtitle" ('') *
title = "title" ('') *
height = \d+ (0) *
listheight = \d+ (5) *
width = \d+ (0) *
beepbefore = 0,1 (0) *
beepafter = 0,1 (0) *

WIDGET METHODS

yesno( )

EXAMPLE
 if ($d->yesno( text => 'A binary type question?') ) {
     # user pressed yes
 } else {
     # user pressed no or cancel
 }
DESCRIPTION
Present the end user with a message box that has two buttons, yes and no.
RETURNS
 TRUE (1) for a response of YES or FALSE (0) for anything else.

msgbox( )

EXAMPLE
 $d->msgbox( text => 'A simple message' );
DESCRIPTION
Pesent the end user with a message box that has an OK button.
RETURNS
TRUE \fIs0(1) for a response of OK or FALSE \fIs0(0) for anything else.

infobox( )

EXAMPLE
 $d->infobox( text => 'A simple 6 second message.', timeout => 6000 );
DESCRIPTION
Pesent the end user with a message box for a limited duration of time. The timeout is specified in thousandths of a second, ie: 1000 = 1 second.
RETURNS
TRUE \fIs0(1) for a response of OK or FALSE \fIs0(0) for anything else.

password( )

EXAMPLE
 my $string = $d->password( text => 'Enter some (hidden) text.' );
DESCRIPTION
Present the end user with a text input field that doesn't reveal the input (except to the script) and a message.
RETURNS
a SCALAR if the response is OK and FALSE \fIs0(0) for anything else.

inputbox( )

EXAMPLE
 my $string = $d->inputbox( text => 'Enter some text.',
                            entry => 'this is the input field' );
DESCRIPTION
Present the end user with a text input field and a message.
RETURNS
a SCALAR if the response is OK and FALSE \fIs0(0) for anything else.

textbox( )

EXAMPLE
 $d->textbox( path => '/path/to/a/text/file' );
DESCRIPTION
Present the end user with a simple scrolling box containing the contents of the given text file.
RETURNS
TRUE \fIs0(1) if the response is OK and FALSE \fIs0(0) for anything else.

menu( )

EXAMPLE
 my $selection1 = $d->menu( text => 'Select one:',
                            list => [ 'tag1', 'item1',
                                      'tag2', 'item2',
                                      'tag3', 'item3' ]
                          );
DESCRIPTION
Present the user with a selectable list.
RETURNS
a SCALAR of the chosen tag if the response is OK and FALSE \fIs0(0) for anything else.

checklist( )

EXAMPLE
 my @selection = $d->checklist( text => 'Select one:',
                                list => [ 'tag1', [ 'item1', 0 ],
                                          'tag2', [ 'item2', 1 ],
                                          'tag3', [ 'item3', 1 ] ]
                              );
DESCRIPTION
Present the user with a selectable checklist.
RETURNS
an ARRAY of the chosen tags if the response is OK and FALSE \fIs0(0) for anything else.

radiolist( )

EXAMPLE
 my $selection = $d->radiolist( text => 'Select one:',
                                list => [ 'tag1', [ 'item1', 0 ],
                                          'tag2', [ 'item2', 1 ],
                                          'tag3', [ 'item3', 0 ] ]
                              );
DESCRIPTION
Present the user with a selectable radiolist.
RETURNS
a SCALAR of the chosen tag if the response is OK and FALSE \fIs0(0) for anything else.

fselect( )

EXAMPLE
 my $text = $d->fselect( path => '/path/to/a/file/or/directory' );
DESCRIPTION
Present the user with a file selection widget preset with the given path.
RETURNS
a SCALAR if the response is OK and FALSE \fIs0(0) for anything else.

dselect( )

EXAMPLE
 my $text = $d->dselect( path => '/path/to/a/directory' );
DESCRIPTION
Present the user with a file selection widget preset with the given path. Unlike fselect() this widget will only return a directory selection.
RETURNS
a SCALAR if the response is OK and FALSE \fIs0(0) for anything else.

gauge_start( )

EXAMPLE
 $d->gauge_start( text => 'gauge...', percentage => 1 );
DESCRIPTION
Display a meter bar to the user. This get's the widget realized but requires the use of the other gauge_*() methods for functionality.
RETURNS
TRUE \fIs0(1) if the widget loaded fine and FALSE \fIs0(0) for anything else.

gauge_inc( )

EXAMPLE
 $d->gauge_inc( 1 );
DESCRIPTION
Increment the meter by the given amount.
RETURNS
TRUE \fIs0(1) if the widget incremented fine and FALSE \fIs0(0) for anything else.

gauge_dec( )

EXAMPLE
 $d->gauge_dec( 1 );
DESCRIPTION
Decrement the meter by the given amount.
RETURNS
TRUE \fIs0(1) if the widget incremented fine and FALSE \fIs0(0) for anything else.

gauge_set( )

EXAMPLE
 $d->gauge_set( 99 );
DESCRIPTION
Set the meter bar to the given amount.
RETURNS
TRUE \fIs0(1) if the widget set fine and FALSE \fIs0(0) for anything else.

gauge_text( )

EXAMPLE
 $d->gauge_text( 'string' );
DESCRIPTION
Set the meter bar message to the given string.
RETURNS
TRUE \fIs0(1) if the widget set fine and FALSE \fIs0(0) for anything else.

gauge_stop( )

EXAMPLE
 $d->gauge_stop();
DESCRIPTION
End the meter bar widget process.
RETURNS
TRUE \fIs0(1) if the widget closed fine and FALSE \fIs0(0) for anything else.

BUGS

 Please email the author with any bug reports. Include the name of the
 module in the subject line.

AUTHOR

 Kevin C. Krinke, E<lt>[email protected]<gt>

COPYRIGHT AND LICENSE

 Copyright (C) 2013  Kevin C. Krinke <[email protected]>
 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.
 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Lesser General Public License for more details.
 You should have received a copy of the GNU Lesser General Public
 License along with this library; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA

SEE ALSO

LAST SEARCHED