class Hirb::Menu
This class provides a menu using Hirb's table helpers by default to display choices. Menu
choices (syntax at Hirb::Util.choose_from_array
) refer to rows. However, when in two_d mode, choices refer to specific cells by appending a ':field' to a choice. A field name can be an abbreviated. Menus can also have an action mode, which turns the menu prompt into a commandline that executes the choices as arguments and uses methods as actions/commands.
Constants
- CHOSEN_ARG
- CHOSEN_REGEXP
Detects valid choices and optional field/column
- DIRECTIONS
Public Class Methods
This method will return an array unless it's exited by simply pressing return, which returns nil. If given a block, the block will yield if and with any menu items are chosen. All options except for the ones below are passed to render the menu.
Options:¶ ↑
- :helper_class
-
Helper class to render menu. Helper class is expected to implement numbering given a :number option. To use a very basic menu, set this to false. Defaults to
Hirb::Helpers::AutoTable
. - :prompt
-
String
for menu prompt. Defaults to “Choose: ”. - :ask
-
Always ask for input, even if there is only one choice. Default is true.
- :directions
-
Display directions before prompt. Default is true.
- :readline
-
Use readline to get user input if available. Input strings are added to readline history. Default is false.
- :two_d
-
Turn menu into a 2 dimensional (2D) menu by allowing user to pick values from table cells. Default is false.
- :default_field
-
Default field for a 2D menu. Defaults to first field in a table.
- :action
-
Turn menu into an action menu by letting user pass menu choices as an argument to a method/command. A menu choice's place amongst other arguments is preserved. Default is false.
- :multi_action
-
Execute action menu multiple times iterating over the menu choices. Default is false.
- :action_object
-
Object
that takes method/command calls. Default is main. - :command
-
Default method/command to call when no command given.
- :reopen
-
Reopens $stdin with given file or with /dev/tty when set to true. Use when $stdin is already reading in piped data.
Examples:
>> extend Hirb::Console => self >> menu [1,2,3], :prompt=> "So many choices, so little time: " >> menu [{:a=>1, :b=>2}, {:a=>3, :b=>4}], :fields=>[:a,b], :two_d=>true)
# File lib/hirb/menu.rb, line 42 def self.render(output, options={}, &block) new(options).render(output, &block) rescue Error=>e $stderr.puts "Error: #{e.message}" end