blob: eb55a1f822a5e18b7a8c2eb301ece7768af397b7 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2003-2013, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
package scala
package collection
package mutable
import script._
/** This class is typically used as a mixin. It adds a subscription
* mechanism to the `Set` class into which this abstract
* class is mixed in. Class `ObservableSet` publishes
* events of the type `Message`.
*
* @author Matthias Zenger
* @version 1.0, 08/07/2003
* @since 1
*/
@deprecated("observables are deprecated because scripting is deprecated", "2.11.0")
trait ObservableSet[A] extends Set[A] with Publisher[Message[A] with Undoable] {
type Pub <: ObservableSet[A]
abstract override def +=(elem: A): this.type = {
if (!contains(elem)) {
super.+=(elem)
publish(new Include(elem) with Undoable { def undo = -=(elem) })
}
this
}
abstract override def -=(elem: A): this.type = {
if (contains(elem)) {
super.-=(elem)
publish(new Remove(elem) with Undoable { def undo = +=(elem) })
}
this
}
abstract override def clear(): Unit = {
super.clear()
publish(new Reset with Undoable {
def undo(): Unit = throw new UnsupportedOperationException("cannot undo")
})
}
}
|
