module GObject

# File lib/ffi-gobject.rb, line 47
def self.object_class_from_instance instance
  object_class_from_instance_pointer instance.to_ptr
end

# File lib/ffi-gobject.rb, line 51
def self.object_class_from_instance_pointer inst_ptr
  return nil if inst_ptr.null?
  klsptr = inst_ptr.get_pointer 0
  ObjectClass.wrap klsptr
end

# File lib/ffi-gobject.rb, line 33
def self.object_is_floating obj
  Lib::g_object_is_floating obj.to_ptr
end

# File lib/ffi-gobject.rb, line 21
def self.object_ref obj
  Lib::g_object_ref obj.to_ptr
end

# File lib/ffi-gobject.rb, line 25
def self.object_ref_sink obj
  Lib::g_object_ref_sink obj.to_ptr
end

# File lib/ffi-gobject.rb, line 29
def self.object_unref obj
  Lib::g_object_unref obj.to_ptr
end

# File lib/ffi-gobject.rb, line 82
def self.param_spec_int(name, nick, blurb, minimum, maximum,
                        default_value, flags)
  ptr = Lib.g_param_spec_int(name, nick, blurb, minimum, maximum,
                             default_value, flags)
  ParamSpecInt.wrap(ptr)
end

# File lib/ffi-gobject.rb, line 73
def self.signal_connect object, signal, data=nil, &block
  callback = Helper.signal_callback object.class, signal, &block
  data_ptr = GirFFI::ArgHelper.object_to_inptr data

  Lib::CALLBACKS << callback

  Lib.g_signal_connect_data object, signal, callback, data_ptr, nil, 0
end

# File lib/ffi-gobject.rb, line 63
def self.signal_emit object, signal, *args
  id = signal_lookup_from_instance signal, object
  arr = Helper.signal_arguments_to_gvalue_array signal, object, *args
  rval = Helper.gvalue_for_signal_return_value signal, object

  Lib.g_signal_emitv arr.values, id, 0, rval

  return rval
end

# File lib/ffi-gobject.rb, line 59
def self.signal_lookup_from_instance signal, object
  signal_lookup signal, type_from_instance(object)
end

# File lib/ffi-gobject.rb, line 43
def self.type_from_instance instance
  type_from_instance_pointer instance.to_ptr
end

# File lib/ffi-gobject.rb, line 37
def self.type_from_instance_pointer inst_ptr
  return nil if inst_ptr.null?
  klsptr = inst_ptr.get_pointer 0
  klsptr.send "get_#{GirFFI::TypeMap::TAG_TYPE_MAP[:GType]}", 0
end

# File lib/ffi-gobject.rb, line 17
def self.type_init
  Lib::g_type_init
end