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62
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1 |
ValueModel subclass:#ValueHolder
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2 |
instanceVariableNames:'value changeMsg changeReceiver'
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3 |
classVariableNames:''
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4 |
poolDictionaries:''
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66
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5 |
category:'Interface-Support'
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62
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6 |
!
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7 |
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8 |
!ValueHolder class methodsFor:'instance creation'!
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9 |
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10 |
with:anObject
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11 |
^ (super new) value:anObject
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12 |
!
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13 |
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14 |
newString
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15 |
^ self with:''
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16 |
!
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17 |
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18 |
newBoolean
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19 |
^ self with:false
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20 |
! !
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21 |
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22 |
!ValueHolder methodsFor:'accessing'!
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23 |
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24 |
onChangeSend:selector to:someone
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25 |
changeMsg := selector.
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changeReceiver := someone
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27 |
!
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28 |
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29 |
value:anObject
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30 |
|oldValue|
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31 |
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32 |
oldValue := value.
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33 |
value := anObject.
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34 |
self changed:#value.
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35 |
changeReceiver notNil ifTrue:[
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changeMsg notNil ifTrue:[
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37 |
changeReceiver perform:changeMsg
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]
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]
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40 |
!
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41 |
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42 |
value
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^ value
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44 |
! !
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