NAME

CGI::Test::Form::Widget::Menu - Abstract representation of a menu

SYNOPSIS

# Inherits from CGI::Test::Form::Widget

DESCRIPTION

This class is the abstract representation of a menu from which one can choose one or several items, i.e. either a popup menu or a scrollable list (with possibly multiple selections).

There is an interface to query the selected items, get at the presented labels and associated values, and naturally select() or unselect() items.

INTERFACE

The interface is the same as the one described in CGI::Test::Form::Widget, with the following additions:

Attributes

known_values

An hash reference, recording valid menu values, as tuples (value => count), with count set to the number of times the same value is re-used amongst the proposed options.

multiple

Whether menu allows multiple selections.

option_labels

A list reference, providing the labels to choose from, in the order in which they appear. The retained labels are either the content of the <OPTION> elements, or the value of their label attribute, when specified.

option_values

A list reference, providing the underlying values that the user chooses from when he selects labels, in the order in which they appear in the menu.

selected

An hash reference, whose keys are the selected values.

selected_count

The amount of currently selected items.

Attribute Setting

select value

Mark the option value as selected. If multiple is false, any previously selected value is automatically unselected.

Note that this takes a value, not a label.

unselect value

Unselect an option value. It is not possible to do that on a popup menu: you must select another item to unselect any previously selected one.

Menu Probing

is_selected value

Test whether an option value is currently selected or not. This is not testing a label, but a value, which is what the script will get back eventually: labels are there for human consumption only.

Widget Classification Predicates

There is an additional predicate to distinguish between a popup menu (single selection mandatory) from a scrolling list (multiple selection allowed, and may select nothing).

is_popup

Returns true for a popup menu.

Miscellaneous Features

Although documented, those features are more targetted for internal use...

set_selected value, flag

Change the selection status of an option value.

You should use the select and unselect convenience routines instead of calling this feature.

AUTHOR

Raphael Manfredi <Raphael_Manfredi@pobox.com>

SEE ALSO

CGI::Test::Form::Widget(3), CGI::Test::Form::Widget::Menu::List(3), CGI::Test::Form::Widget::Menu::Popup(3).