NAME

Curses::UI::Buttonbox - Create and manipulate button widgets

CLASS HIERARCHY

 Curses::UI::Widget
    |
    +----Curses::UI::Buttonbox

SYNOPSIS

    use Curses::UI;
    my $cui = new Curses::UI;
    my $win = $cui->add('window_id', 'Window');
    my $buttons = $win->add(
        'mybuttons', 'Buttonbox',
        -buttons   => [
            { 
              -label => '< Button 1 >',
              -value => 1,
              -shortcut => 1 
            },{ 
              -label => '< Button 2 >',
              -value => 2,
              -shortcut => 2 
            }
        ]
    );
    $buttons->focus();
    my $value = $buttons->get();

DESCRIPTION

Curses::UI::Buttonbox is a widget that can be used to create an array of buttons (or, of course, only one button).

STANDARD OPTIONS

-parent, -x, -y, -width, -height, -pad, -padleft, -padright, -padtop, -padbottom, -ipad, -ipadleft, -ipadright, -ipadtop, -ipadbottom, -title, -titlefullwidth, -titlereverse, -onfocus, -onblur

For an explanation of these standard options, see Curses::UI::Widget.

-buttons < ARRAYREF >

This option takes a reference to a list of buttons. The list may contain both predefined button types and complete button definitions of your own.

* Your own button definition

  A button definition is a reference to a hash. This
  hash can have the following key-value pairs:
  obligatory:
  -----------
  -label      This determines what text should be drawn
              on the button.
  optional:
  ---------
  -value      This determines the returnvalue for the
              get() method. If the value is not defined,
              the get() method will return the index
              of the button.
  -shortcut   The button will act as if it was pressed
              if the key defined by -shortcut is pressed 
  -onpress    If the value for -onpress is a CODE reference,
              this code will be executes if the button
              is pressed, before the buttons widget loses
              focus and returns.

* Predefined button type

  This module has a predefined list of frequently used button
  types. Using these in B<-buttons> makes things a lot
  easier. The predefined button types are:
  ok          -label    => '< OK >'
              -shortcut => 'o'
              -value    => 1
              -onpress  => undef
  cancel      -label    => '< Cancel >'
              -shortcut => 'c'
              -value    => 0
              -onpress  => undef
  yes         -label    => '< Yes >'
              -shortcut => 'y'
              -value    => 1
              -onpress  => undef
  no          -label    => '< No >'
              -shortcut => 'n'
              -value    => 0
              -onpress  => undef

Example:

  ....
  -buttons => [
      { -label => '< My own button >',
        -value => 'mine!',
        -shortcut => 'm' },
      'ok',
      'cancel',
      { -label => '< My second button >',
        -value => 'another one',
        -shortcut => 's',
        -onpress => sub { die "Do not press this button!\n" } }
  ]
  ....

-selected < INDEX >
By default the first button (index = 0) is active. If you want another button to be active at creation time, add this option. The INDEX is the index of the button you want to make active.
-buttonalignment < VALUE >
You can specify how the buttons should be aligned in the widget. Available values for VALUE are 'left', 'middle' and 'right'.
-vertical < BOOLEAN >
When set to a true value, it will cause the buttons to be rendered with vertical instead of horizontal alignment.

METHODS

new ( OPTIONS )
layout ( )
draw ( BOOLEAN )
focus ( )
onFocus ( CODEREF )
onBlur ( CODEREF )
draw_if_visible ( )
These are standard methods. See Curses::UI::Widget for an explanation of these.
get ( )
This method will return the index of the currently active button. If a value is given for that index (using the -value option, see -buttons above), that value will be returned.

DEFAULT BINDINGS

<enter>, <space>
TODO: Fix dox Call the 'loose-focus' routine. By default this routine will have the container in which the widget is loose its focus. If you do not like this behaviour, then you can have it loose focus itself by calling:
```
    $buttonswidget->set_routine('loose-focus', 'RETURN');
    
```
For an explanation of set_routine, see Curses::UI::Widget.
<cursor left>, <h>
Call the 'previous' routine. This will make the previous button the active button. If the active button already is the first button, nothing will be done.
<cursor right>, <l
Call the 'next' routine. This will make the next button the active button. If the next button already is the last button, nothing will be done.
<any other key>
This will call the 'shortcut' routine. This routine will handle the shortcuts that are set by the -shortcuts option.

AUTHOR

Maintained by Marcus Thiesen (marcus@cpan.thiesenweb.de)

This package is free software and is provided "as is" without express or implied warranty. It may be used, redistributed and/or modified under the same terms as perl itself.

2021-01-01

perl v5.32.0