Class: Generators::Avo::SkillsInstallPanel

Inherits:
Object
  • Object
show all
Defined in:
lib/generators/avo/skills_install_panel.rb

Overview

The rails g avo:skills install flow: one question per screen, answered up front, then the generator runs to completion without interrupting.

Two screen kinds. A :radio moves its selection with the arrows, so down-then-enter picks the second option — pressing space to commit a highlighted row is a step people miss. A :checkbox has an independent state per row, so there space is the toggle and the arrows only move.

Written against io/console from stdlib rather than a prompt gem: avo is a dependency of other people's apps, and a TUI is not worth adding one for.

Defined Under Namespace

Classes: Option, Result, Screen

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(screens, defaults: {}, input: $stdin, output: $stdout) ⇒ SkillsInstallPanel

defaults seeds each screen, including one that never becomes visible — its default is then simply the answer.



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# File 'lib/generators/avo/skills_install_panel.rb', line 35

def initialize(screens, defaults: {}, input: $stdin, output: $stdout)
  @screens = screens
  @input = input
  @output = output
  @answers = {}
  @screens.each { |s| @answers[s.key] = defaults.fetch(s.key) { initial_for(s) } }
end

Class Method Details

.interactive? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/generators/avo/skills_install_panel.rb', line 29

def self.interactive?
  $stdin.tty? && $stdout.tty?
end

Instance Method Details

#run ⇒ Object

step carries the direction, so a skipped screen is stepped over the way it was entered — otherwise going back would walk into it forwards.



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# File 'lib/generators/avo/skills_install_panel.rb', line 45

def run
  index = 0
  step = 1

  while index < @screens.length
    screen = @screens[index]
    unless visible?(screen)
      index += step
      next
    end

    case ask(screen, first: first_visible?(index))
    when :back then step = -1
    when :cancel then return Result.new({}, true)
    else step = 1
    end
    index += step
  end

  Result.new(@answers, false)
end