class Chamomile::Cursor

# File lib/chamomile/components/cursor.rb, line 33
def initialize(mode: MODE_BLINK, blink_speed: BLINK_SPEED)
  @id = self.class.next_id
  @mode = mode
  @blink_speed = blink_speed
  @char = " "
  @blinked = false
  @focused = false
  @tag = 0
end

# File lib/chamomile/components/cursor.rb, line 18
def self.next_id
  @id_mutex.synchronize do
    if Process.pid != @id_pid
      @id_pid = Process.pid
      @next_id = 0
      @id_mutex = Mutex.new
    end
    @next_id += 1
    "#{@id_pid}-cur-#{@next_id}"
  end
end

# File lib/chamomile/components/cursor.rb, line 67
def blink_cmd
  captured_id = @id
  captured_tag = @tag
  speed = @blink_speed
  -> {
    sleep(speed)
    CursorBlinkMsg.new(id: captured_id, tag: captured_tag)
  }
end

# File lib/chamomile/components/cursor.rb, line 49
def blur
  @focused = false
  @blinked = true
  @tag += 1
  nil
end

# File lib/chamomile/components/cursor.rb, line 43
def focus
  @focused = true
  @blinked = false
  @mode == MODE_BLINK ? blink_cmd : nil
end

# File lib/chamomile/components/cursor.rb, line 56
def focused?
  @focused
end

# File lib/chamomile/components/cursor.rb, line 77
def handle(msg)
  return unless msg.is_a?(CursorBlinkMsg)
  return unless @mode == MODE_BLINK && @focused
  return unless msg.id == @id && msg.tag == @tag

  @blinked = !@blinked
  @tag += 1
  blink_cmd
end

# File lib/chamomile/components/cursor.rb, line 60
def mode=(new_mode)
  @mode = new_mode
  @tag += 1
  @blinked = new_mode == MODE_HIDE || !@focused
  @mode == MODE_BLINK && @focused ? blink_cmd : nil
end

# File lib/chamomile/components/cursor.rb, line 89
def view
  return @char if @mode == MODE_HIDE
  return @char if @blinked

  "\e[7m#{@char}\e[0m"
end