| author | Stefan Vogel <sv@exept.de> |
| Wed, 24 May 2000 12:50:41 +0200 | |
| changeset 1376 | 6294517bece4 |
| parent 1374 | 881f1ba7ca1e |
| child 1415 | fd8738cc4733 |
| permissions | -rw-r--r-- |
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1374
881f1ba7ca1e
Eat all user generated events if locked.
Stefan Vogel <sv@exept.de>
parents:
1371
diff
changeset
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"{ Package: 'stx:libview2' }"
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EventListener subclass:#ScreenLock |
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instanceVariableNames:'workstation lastInactiveTime lockAfterSeconds lockChannel |
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1374
881f1ba7ca1e
Eat all user generated events if locked.
Stefan Vogel <sv@exept.de>
parents:
1371
diff
changeset
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lockedViews hiddenViews' |
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classVariableNames:'' |
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poolDictionaries:'' |
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category:'Interface-Support' |
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! |
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!ScreenLock class methodsFor:'documentation'! |
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documentation |
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" |
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documentation to be added. |
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[author:] |
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Stefan Vogel (stefan@nilpferd) |
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[see also:] |
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[instance variables:] |
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[class variables:] |
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" |
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! |
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examples |
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" |
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[exBegin] |
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|screenLock| |
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screenLock := ScreenLock forDevice:Screen current. |
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screenLock lock. |
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Delay waitForSeconds:3. |
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screenLock unlock. |
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screenLock unlisten. |
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[exEnd] |
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[exBegin] |
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|screenLock| |
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screenLock := ScreenLock forDevice:Screen current. |
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Delay waitForSeconds:1. |
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screenLock checkTime. |
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Delay waitForSeconds:12. |
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screenLock checkTime. |
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Delay waitForSeconds:3. |
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screenLock unlock. |
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screenLock unlisten. |
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[exEnd] |
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[exBegin] |
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|screenLock channel running| |
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screenLock := ScreenLock forDevice:Screen current. |
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screenLock lockAfterSeconds:4. |
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[ |
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channel := false asValue. |
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channel onChangeEvaluate:[ |
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channel value ifTrue:[ |
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self information:'Application is locked\\Hit ok to unlock' withCRs. |
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channel value:false. |
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]. |
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]. |
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screenLock lockChannel:channel. |
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[ |
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Delay waitForSeconds:2. |
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screenLock checkTime. |
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] loop. |
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] valueNowOrOnUnwindDo:[ |
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screenLock unlisten. |
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]. |
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[exEnd] |
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" |
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! ! |
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!ScreenLock class methodsFor:'instance creation'! |
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forDevice:aWorkstation |
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^ self new initializeForDevice:aWorkstation |
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! ! |
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!ScreenLock methodsFor:'accessing'! |
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lockAfterSeconds |
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"return the value of the instance variable 'lockAfterSeconds' (automatically generated)" |
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^ lockAfterSeconds! |
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lockAfterSeconds:something |
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"set the value of the instance variable 'lockAfterSeconds' (automatically generated)" |
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lockAfterSeconds := something.! |
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lockChannel |
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"return the value of the instance variable 'lockChannel' (automatically generated)" |
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^ lockChannel! |
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lockChannel:something |
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lockChannel := something. |
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lockChannel addDependent:self. |
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! |
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workstation |
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"return the value of the instance variable 'workstation' (automatically generated)" |
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^ workstation! |
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workstation:something |
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"set the value of the instance variable 'workstation' (automatically generated)" |
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workstation := something.! ! |
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!ScreenLock methodsFor:'change & update'! |
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update:aspect with:param from:anObject |
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|lock| |
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anObject == lockChannel ifTrue:[ |
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aspect == #value ifTrue:[ |
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"/ lockChannel is a value holder |
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lock := lockChannel value. |
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] ifFalse:[ |
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"/ lockChannel is a block or something else |
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lock := param. |
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]. |
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lock == true ifTrue:[ |
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self lockScreen. |
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] ifFalse:[ |
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self unlockScreen. |
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] |
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]. |
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! ! |
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!ScreenLock methodsFor:'events'! |
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buttonMotion:state x:x y:y view:aView |
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1374
881f1ba7ca1e
Eat all user generated events if locked.
Stefan Vogel <sv@exept.de>
parents:
1371
diff
changeset
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^ self gotEventForView:aView. |
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! |
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buttonMultiPress:button x:x y:y view:aView |
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Eat all user generated events if locked.
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parents:
1371
diff
changeset
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^ self gotEventForView:aView. |
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! |
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buttonPress:button x:x y:y view:aView |
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881f1ba7ca1e
Eat all user generated events if locked.
Stefan Vogel <sv@exept.de>
parents:
1371
diff
changeset
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^ self gotEventForView:aView. |
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! |
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buttonRelease:button x:x y:y view:aView |
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881f1ba7ca1e
Eat all user generated events if locked.
Stefan Vogel <sv@exept.de>
parents:
1371
diff
changeset
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^ self gotEventForView:aView. |
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! |
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keyPress:key x:x y:y view:aView |
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881f1ba7ca1e
Eat all user generated events if locked.
Stefan Vogel <sv@exept.de>
parents:
1371
diff
changeset
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^ self gotEventForView:aView. |
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! |
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keyRelease:key x:x y:y view:aView |
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881f1ba7ca1e
Eat all user generated events if locked.
Stefan Vogel <sv@exept.de>
parents:
1371
diff
changeset
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^ self gotEventForView:aView. |
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! |
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mouseWheelMotion:state x:x y:y amount:amount deltaTime:dTime view:aView |
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1374
881f1ba7ca1e
Eat all user generated events if locked.
Stefan Vogel <sv@exept.de>
parents:
1371
diff
changeset
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^ self gotEventForView:aView. |
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! ! |
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!ScreenLock methodsFor:'lock interface'! |
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checkTime |
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|now| |
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lockedViews isNil ifTrue:[ |
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now := AbsoluteTime now. |
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lastInactiveTime notNil ifTrue:[ |
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(lastInactiveTime addSeconds:lockAfterSeconds value) < now ifTrue:[ |
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self lock |
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]. |
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] ifFalse:[ |
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lastInactiveTime := now. |
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]. |
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]. |
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! |
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lock |
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lockChannel isNil ifTrue:[ |
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self lockChannel:ValueHolder new. |
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]. |
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lockChannel value:true. |
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! |
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unlisten |
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workstation removeEventListener:self |
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! |
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unlock |
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lockChannel value:false. |
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! ! |
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!ScreenLock methodsFor:'private'! |
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881f1ba7ca1e
Eat all user generated events if locked.
Stefan Vogel <sv@exept.de>
parents:
1371
diff
changeset
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gotEventForView:v |
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"got an event. |
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881f1ba7ca1e
Eat all user generated events if locked.
Stefan Vogel <sv@exept.de>
parents:
1371
diff
changeset
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Reset the inactive timer. |
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881f1ba7ca1e
Eat all user generated events if locked.
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parents:
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diff
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If locked, eat all user events (for security)" |
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1376
6294517bece4
Keep date of start of inactivity.
Stefan Vogel <sv@exept.de>
parents:
1374
diff
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lockedViews isNil ifTrue:[ |
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parents:
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lastInactiveTime := nil. |
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^ false. |
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Keep date of start of inactivity.
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parents:
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diff
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]. |
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Keep date of start of inactivity.
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parents:
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diff
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^ lockedViews includes:v. |
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! |
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initializeForDevice:aWorkstation |
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lockAfterSeconds := 10. |
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workstation := aWorkstation. |
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workstation addEventListener:self. |
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! |
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lockScreen |
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881f1ba7ca1e
Eat all user generated events if locked.
Stefan Vogel <sv@exept.de>
parents:
1371
diff
changeset
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lockedViews := workstation allViews. |
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6294517bece4
Keep date of start of inactivity.
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parents:
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diff
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hiddenViews := lockedViews select:[:v| |
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6294517bece4
Keep date of start of inactivity.
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parents:
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diff
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v shown and:[ |
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parents:
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diff
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v isPopUpView ifTrue:[v hide]. |
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parents:
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diff
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v isTopView. |
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Keep date of start of inactivity.
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parents:
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diff
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]. |
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Keep date of start of inactivity.
Stefan Vogel <sv@exept.de>
parents:
1374
diff
changeset
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]. |
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1374
881f1ba7ca1e
Eat all user generated events if locked.
Stefan Vogel <sv@exept.de>
parents:
1371
diff
changeset
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hiddenViews do:[:v| |
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881f1ba7ca1e
Eat all user generated events if locked.
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parents:
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diff
changeset
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v beInvisible. |
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]. |
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! |
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unlockScreen |
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6294517bece4
Keep date of start of inactivity.
Stefan Vogel <sv@exept.de>
parents:
1374
diff
changeset
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lastInactiveTime := nil. |
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6294517bece4
Keep date of start of inactivity.
Stefan Vogel <sv@exept.de>
parents:
1374
diff
changeset
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hiddenViews do:[:v| |
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6294517bece4
Keep date of start of inactivity.
Stefan Vogel <sv@exept.de>
parents:
1374
diff
changeset
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v beVisible. |
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]. |
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1374
881f1ba7ca1e
Eat all user generated events if locked.
Stefan Vogel <sv@exept.de>
parents:
1371
diff
changeset
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hiddenViews := lockedViews := nil. |
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881f1ba7ca1e
Eat all user generated events if locked.
Stefan Vogel <sv@exept.de>
parents:
1371
diff
changeset
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! ! |
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881f1ba7ca1e
Eat all user generated events if locked.
Stefan Vogel <sv@exept.de>
parents:
1371
diff
changeset
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881f1ba7ca1e
Eat all user generated events if locked.
Stefan Vogel <sv@exept.de>
parents:
1371
diff
changeset
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!ScreenLock methodsFor:'queries'! |
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881f1ba7ca1e
Eat all user generated events if locked.
Stefan Vogel <sv@exept.de>
parents:
1371
diff
changeset
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881f1ba7ca1e
Eat all user generated events if locked.
Stefan Vogel <sv@exept.de>
parents:
1371
diff
changeset
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isLocked |
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881f1ba7ca1e
Eat all user generated events if locked.
Stefan Vogel <sv@exept.de>
parents:
1371
diff
changeset
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881f1ba7ca1e
Eat all user generated events if locked.
Stefan Vogel <sv@exept.de>
parents:
1371
diff
changeset
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^ lockedViews notNil |
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! ! |
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!ScreenLock class methodsFor:'documentation'! |
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version |
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6294517bece4
Keep date of start of inactivity.
Stefan Vogel <sv@exept.de>
parents:
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diff
changeset
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^ '$Header: /cvs/stx/stx/libview2/ScreenLock.st,v 1.3 2000-05-24 10:50:41 stefan Exp $' |
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! ! |