Class: Dex::UI::Spinner::SpinGroup

Inherits:
Object
  • Object
show all
Defined in:
lib/dex/ui/spinner.rb

Defined Under Namespace

Classes: Task

Instance Method Summary collapse

Constructor Details

#initialize ⇒ SpinGroup

Returns a new instance of SpinGroup.



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# File 'lib/dex/ui/spinner.rb', line 22

def initialize
  @m = Mutex.new
  @consumed_lines = 0
  @tasks = []
end

Instance Method Details

#add(title, &block) ⇒ Object 



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# File 'lib/dex/ui/spinner.rb', line 96

def add(title, &block)
  @m.synchronize do
    @tasks << Task.new(title, &block)
  end
end

#debrief ⇒ Object 



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# File 'lib/dex/ui/spinner.rb', line 138

def debrief
  @m.synchronize do
    @tasks.each do |task|
      next if task.success

      e = task.exception
      out = task.stdout
      err = task.stderr

      Dex::UI::Frame.open('Task Failed: ' + task.title, color: :red) do
        if e
          puts"#{e.class}: #{e.message}"
          puts "\tfrom #{e.backtrace.join("\n\tfrom ")}"
        end

        Dex::UI::Frame.divider('STDOUT')
        out = "(empty)" if out.strip.empty?
        puts out

        Dex::UI::Frame.divider('STDERR')
        err = "(empty)" if err.strip.empty?
        puts err
      end
    end
    @tasks.all?(&:success)
  end
end

#wait ⇒ Object 



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# File 'lib/dex/ui/spinner.rb', line 102

def wait
  idx = 0

  loop do
    all_done = true

    @m.synchronize do
      Dex::UI.raw do
        @tasks.each.with_index do |task, int_index|
          nat_index = int_index + 1
          task_done = task.check
          all_done = false unless task_done

          if nat_index > @consumed_lines
            print(task.render(idx, true) + "\n")
            @consumed_lines += 1
          else
            offset = @consumed_lines - int_index
            move_to   = Dex::UI::ANSI.cursor_up(offset) + "\r"
            move_from = "\r" + Dex::UI::ANSI.cursor_down(offset)

            print(move_to + task.render(idx, idx.zero?) + move_from)
          end
        end
      end
    end

    break if all_done

    idx = (idx + 1) % GLYPHS.size
    sleep(PERIOD)
  end

  debrief
end