/ 
Curses-UI-0.62
River stage two • 20 direct dependents • 20 total dependents
/ Curses::UI::ListBox

NAME

Curses::UI::ListBox - Create and manipulate listbox widgets

SYNOPSIS

use Curses::UI;
my $cui = new Curses::UI;
my $win = $cui->add('window_id', 'Window');

my $listbox = $win->add(
    'mylistbox', 'Listbox',
    -values    => [1, 2, 3],
    -labels    => { 1 => 'One', 
                    2 => 'Two', 
                    3 => 'Three' },
    -radio     => 1,
);

$listbox->focus();
my $selected = $listbox->get();

DESCRIPTION

Curses::UI::Listbox is a widget that can be used to create a couple of different kinds of listboxes. These are:

  • default listbox

    A list of values through which can be browsed. One of these values can be selected. The selected value will be highlighted. This kind of listbox looks somewhat like this:

    +------+
|One   |
|Two   |
|Three |
+------+

  • multi-select listbox

    This is also a list of values, but now more than one value can be selected at once. This kind of listbox looks somewhat like this:

    +----------+
|[X] One   |
|[ ] Two   |
|[X] Three |
+----------+

  • radiobutton listbox

    This looks a lot like the default listbox (only one value can be selected), but now there is clear visual feedback on which value is selected. Before each value "< >" is printed. If a value is selected, "<o>" is printed instead. This kind of listbox looks somewhat like this:

    +----------+
|< > One   |
|<o> Two   |
|< > Three |
+----------+

See exampes/demo-Curses::UI::Listbox in the distribution for a short demo.

STANDARD OPTIONS

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

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

WIDGET-SPECIFIC OPTIONS

  • -values < LIST >

    This option sets the values to use. Unless a label is set for the value (see -labels), this value will be shown in the list.

  • -labels < HASHREF >

    The keys of this hash reference correspond to the values of the listbox (see -values). The values of the hash are the labels to show in the listbox. It's not obligatory to have a label defined for each value. You may even omit -labels completely.

  • -selected < INDEX >

    In case the -multi option is not set, INDEX is the index of the value that should be selected.

    In case the -multi option is set, INDEX is a hash reference in which the keys are the indices of the -values which are selected and the values are any true value.

  • -multi < BOOLEAN >

    If BOOLEAN has a true value, the listbox will be a multi-select listbox (see DESCRIPTION).

  • -radio < BOOLEAN >

    If BOOLEAN has a true value, the listbox will be a radiobutton listbox (see DESCRIPTION).

  • -wraparound < BOOLEAN >

    If BOOLEAN has a true value, wraparound is enabled. This means that if the listbox is on its last value and a key is pressed to go to the next value, the first value will be selected. Also the last value will be selected if this first value is selected and "goto previous value" is pressed.

METHODS

  • new ( OPTIONS )

  • layout ( )

  • draw ( BOOLEAN )

  • focus ( )

    These are standard methods. See Curses::UI::Widget for an explanation of these.

  • get ( )

    This method will return the values of the currently selected items in the list. If the listbox is not a multi-select listbox only one value will be returned of course.

DEFAULT BINDINGS

  • <cursor-left>, <h>, <tab>

    Call the 'return' routine. This will have the widget loose its focus.

  • <cursor-right, <l>, <enter>, <space>

    Call the 'option-select' routine. This will select the active item in the listbox.

  • <1>, <y>

    Call the 'option-check' routine. If the listbox is a multi-select listbox, the active item will become checked and the next item will become active.

  • <0>, <n>

    Call the 'option-uncheck' routine. If the listbox is a multi-select listbox, the active item will become unchecked and the next item will become active.

  • <cursor-down>, <j>

    Call the 'option-next' routine. This will make the next item of the list active.

  • <cursor-up>, <k>

    Call the 'option-prev' routine. This will make the previous item of the list active.

  • <page-up>

    Call the 'option-prevpage' routine. This will make the item on the previous page active.

  • <page-down>

    Call the 'option-nextpage' routine. This will make the item on the next page active.

  • <home>, <CTRL+A>

    Call the 'option-first' routine. This will make the first item of the list active.

  • <end>, <CTRL+E>

    Call the 'option-last' routine. This will make the last item of the list active.

  • </>

    Call the 'search-forward' routine. This will make a 'less'-like search system appear in the listbox. A searchstring can be entered. After that the user can search for the next occurance using the 'n' key or the previous occurance using the 'N' key.

  • <?>

    Call the 'search-backward' routine. This will do the same as the 'search-forward' routine, only it will search in the opposite direction.

SEE ALSO

Curses::UI, Curses::UI::Widget, Curses::UI::Common

AUTHOR

Copyright (c) 2001-2002 Maurice Makaay. All rights reserved.

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.