Class: AskTTY::MultiSelectPrompt

Inherits:
Object
  • Object
show all
Defined in:
lib/asktty/prompts/multi_select_prompt.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(title:, options:, details: nil, values: nil, validator: nil) ⇒ MultiSelectPrompt

Returns a new instance of MultiSelectPrompt.

Raises:



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# File 'lib/asktty/prompts/multi_select_prompt.rb', line 9

def initialize(title:, options:, details: nil, values: nil, validator: nil)
  @title = title.to_s
  @details = details&.to_s
  @options = Internal::Options.normalize(options)
  @values = Array(values).uniq
  @validator = validator

  option_values = Internal::Options.values(@options)

  unknown_values = @values - option_values
  raise AskTTY::Error, "values contain unknown option values" unless unknown_values.empty?

  @index = first_selected_index || 0
end

Class Method Details

.ask(title:, options:, details: nil, values: nil, &validator) ⇒ Object 



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# File 'lib/asktty/prompts/multi_select_prompt.rb', line 5

def self.ask(title:, options:, details: nil, values: nil, &validator)
  new(title: title, details: details, options: options, values: values, validator: validator).ask
end

Instance Method Details

#ask ⇒ Object 



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# File 'lib/asktty/prompts/multi_select_prompt.rb', line 24

def ask
  validation_active = false

  Internal::Terminal.open do |session|
    loop do
      session.render(render(width: session.width, error_message: validation_message(validation_active)))

      case session.read_key
      when :enter
        validation_active = true
        next if validation_message(validation_active)

        session.render(submitted_render(width: session.width))
        return selected_results
      when :up, "k"
        move(-1)
      when :down, "j"
        move(1)
      when " "
        previous_results = selected_results
        toggle_current
        validation_active ||= selected_results != previous_results
      end
    end
  end
end