Class: Ukey::UsbWatcher

Inherits:
Object
  • Object
show all
Defined in:
lib/ukey/usb_watcher.rb

Overview

Watches usb devices and locks screen if removed

Instance Method Summary collapse

Constructor Details

#initialize(device_name: '', interval: 5) ⇒ UsbWatcher

Returns a new instance of UsbWatcher.



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# File 'lib/ukey/usb_watcher.rb', line 8

def initialize(device_name: '', interval: 5)
  @device_name = device_name
  @interval = interval
  @usb = LIBUSB::Context.new
end

Instance Method Details

#list_devices ⇒ Object 



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# File 'lib/ukey/usb_watcher.rb', line 27

def list_devices
  usb.devices.map(&:product)
end

#watch ⇒ Object 



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# File 'lib/ukey/usb_watcher.rb', line 14

def watch
  loop do
    if screen_locked?
      sleep(interval * 2)
    else
      lock_screen if device_removed?
      sleep(interval)
    end
  end
rescue SystemExit, Interrupt, KeyboardInterrupt
  puts "\nWatcher terminated."
end