class Riffer::Rig::Terminal::Peek

# File lib/riffer/rig/terminal/peek.rb, line 13
def initialize(frame:)
  @frame = frame
  @mutex = Mutex.new
  @buffer = nil
  @open = false
end

# File lib/riffer/rig/terminal/peek.rb, line 28
def press(key)
  return unless key.name == :ctrl_t

  @mutex.synchronize do
    buffer = @buffer
    return unless buffer

    @open = !@open
    @frame.peek(@open ? content(buffer) : '')
  end
end

# File lib/riffer/rig/terminal/peek.rb, line 41
def refresh
  # A key is pressed off the thread the turn runs on: without the lock, a
  # peek read before it was toggled off could be drawn after it was hidden.
  @mutex.synchronize do
    buffer = @buffer
    @frame.peek(content(buffer)) if buffer && @open
  end
end

# File lib/riffer/rig/terminal/peek.rb, line 51
def unwatch
  @mutex.synchronize do
    @buffer = nil
    @open = false
    @frame.peek('')
  end
end

# File lib/riffer/rig/terminal/peek.rb, line 22
def watch(buffer)
  @mutex.synchronize { @buffer = buffer }
end