class Evdev

# File lib/evdev.rb, line 18
def all(file_paths = '/dev/input/event*')
  Dir[file_paths].map{ |file_path| new(file_path) }
end

# File lib/evdev.rb, line 14
def finalize(device)
  proc { Libevdev.free(device) }
end

# File lib/evdev.rb, line 23
def initialize(file_path)
  @file = File.open(file_path)
  device_ptr = FFI::MemoryPointer.new :pointer
  Libevdev.new_from_fd(@file.fileno, device_ptr)
  @device = device_ptr.read_pointer

  ObjectSpace.define_finalizer(self, self.class.finalize(@device))
end

# File lib/evdev.rb, line 71
def abs_axis(code)
  AbsAxis.new(@device, Converter.code_to_int(code))
end

# File lib/evdev.rb, line 55
def bustype
  Libevdev.get_id_bustype(@device)
end

# File lib/evdev.rb, line 63
def driver_version
  Libevdev.get_driver_version(@device)
end

# File lib/evdev.rb, line 101
def event_value(event)
  return unless supports_event?(event)
  type = Converter.code_to_type(event)
  Libevdev.get_event_value(@device, Converter.type_to_int(type), Converter.code_to_int(event))
end

# File lib/evdev.rb, line 97
def events_pending?
  1 == Libevdev.has_event_pending(@device)
end

# File lib/evdev.rb, line 75
def grab
  0 == Libevdev.grab(@device, Libevdev::GRAB)
end

# File lib/evdev.rb, line 88
def handle_event(mode = :blocking)
  event = LinuxInput::InputEvent.new
  Libevdev.next_event(@device, Libevdev.const_get(:"READ_FLAG_#{mode.upcase}"), event.pointer)
  event_name = Converter.int_to_name(event[:type], event[:code])
  trigger(event_name, event[:value], event_name)
rescue Errno::EAGAIN => e
  raise e.extend AwaitEvent
end

# File lib/evdev.rb, line 67
def has_property?(property)
  1 == Libevdev.has_property(@device, Converter.property_to_int(property))
end

# File lib/evdev.rb, line 35
def name
  Libevdev.get_name(@device)
end

# File lib/evdev.rb, line 39
def phys
  Libevdev.get_phys(@device)
end

# File lib/evdev.rb, line 51
def product_id
  Libevdev.get_id_product(@device)
end

# File lib/evdev.rb, line 83
def supports_event?(event)
  type = Converter.code_to_type(event)
  handles_event_type?(type) and handles_event_code?(type, event)
end

# File lib/evdev.rb, line 79
def ungrab
  0 == Libevdev.grab(@device, Libevdev::UNGRAB)
end

# File lib/evdev.rb, line 43
def uniq
  Libevdev.get_uniq(@device)
end

# File lib/evdev.rb, line 47
def vendor_id
  Libevdev.get_id_vendor(@device)
end

# File lib/evdev.rb, line 59
def version
  Libevdev.get_id_version(@device)
end

# File lib/evdev.rb, line 113
def handles_event_code?(type, code)
  1 == Libevdev.has_event_code(@device, Converter.type_to_int(type), Converter.code_to_int(code))
end

# File lib/evdev.rb, line 109
def handles_event_type?(type)
  1 == Libevdev.has_event_type(@device, Converter.type_to_int(type))
end