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
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2003-2011, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
package scala.collection
package script
import mutable.ArrayBuffer
/** Class <code>Message</code> represents messages that are issued by observable
* collection classes whenever a data structure is changed. Class <code>Message</code>
* has several subclasses for the various kinds of events: <code>Update</code>
* <code>Remove</code>, <code>Include</code>, <code>Reset</code>, and
* <code>Script</code>.
*
* @author Matthias Zenger
* @version 1.0, 08/07/2003
* @since 2.8
*/
trait Message[+A]
/** This observable update refers to inclusion operations that add new elements
* to collection classes.
*
* @author Matthias Zenger
* @version 1.0, 08/07/2003
*/
case class Include[+A](location: Location, elem: A) extends Message[A] {
def this(elem: A) = this(NoLo, elem)
}
/** This observable update refers to destructive modification operations
* of elements from collection classes.
*
* @author Matthias Zenger
* @version 1.0, 08/07/2003
*/
case class Update[+A](location: Location, elem: A) extends Message[A] {
def this(elem: A) = this(NoLo, elem)
}
/** This observable update refers to removal operations of elements
* from collection classes.
*
* @author Matthias Zenger
* @version 1.0, 08/07/2003
*/
case class Remove[+A](location: Location, elem: A) extends Message[A] {
def this(elem: A) = this(NoLo, elem)
}
/** This command refers to reset operations.
*
* @author Matthias Zenger
* @version 1.0, 08/07/2003
*/
case class Reset[+A]() extends Message[A]
/** Objects of this class represent compound messages consisting
* of a sequence of other messages.
*
* @author Matthias Zenger
* @version 1.0, 10/05/2004
*/
class Script[A] extends ArrayBuffer[Message[A]] with Message[A] {
override def toString(): String = {
var res = "Script("
var it = this.iterator
var i = 1
while (it.hasNext) {
if (i > 1)
res = res + ", "
res = res + "[" + i + "] " + it.next
i = i + 1
}
res + ")"
}
}
|