Method

WPEJavaScriptCoreValueobject_define_property_accessor

Declaration [src]

void
jsc_value_object_define_property_accessor (
  JSCValue* value,
  const char* property_name,
  JSCValuePropertyFlags flags,
  GType property_type,
  GCallback getter,
  GCallback setter,
  gpointer user_data,
  GDestroyNotify destroy_notify
)

Description [src]

Define or modify a property with property_name in object referenced by value. When the property value needs to be getted or set, getter and setter callbacks will be called. When the property is cleared in the JSCClass context, destroy_notify is called with user_data as parameter. This is equivalent to JavaScript Object.defineProperty() when used with an accessor descriptor.

Note that the value returned by getter must be fully transferred. In case of boxed types, you could use G_TYPE_POINTER instead of the actual boxed GType to ensure that the instance owned by JSCClass is used. If you really want to return a new copy of the boxed type, use #JSC_TYPE_VALUE and return a JSCValue created with jsc_value_new_object() that receives the copy as instance parameter.

Note that getter and setter are called as functions and not methods, so they don’t receive an instance as first parameter. Use jsc_class_add_property() if you want to add property accessor invoked as a method.

Parameters

`property_name`	`const char*`
	The name of the property to define.
	The data is owned by the caller of the function.
	The value is a NUL terminated UTF-8 string.
`flags`	`JSCValuePropertyFlags`
	`JSCValuePropertyFlags`.
`property_type`	`GType`
	The `GType` of the property.
`getter`	`GCallback`
	A `GCallback` to be called to get the property value.
	The argument can be `NULL`.
`setter`	`GCallback`
	A `GCallback` to be called to set the property value.
	The argument can be `NULL`.
`user_data`	`gpointer`
	User data to pass to `getter` and `setter`.
	The argument can be `NULL`.
	The data is owned by the caller of the function.
`destroy_notify`	`GDestroyNotify`
	Destroy notifier for `user_data`.
	The argument can be `NULL`.