author | Claus Gittinger <cg@exept.de> |
Fri, 23 Apr 1999 14:50:20 +0200 | |
changeset 2573 | 437ff42d1ba3 |
parent 2556 | 27e9e1cc8cb3 |
child 2950 | 705ddb097eec |
permissions | -rw-r--r-- |
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" |
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COPYRIGHT (c) 1989 by Claus Gittinger |
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All Rights Reserved |
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This software is furnished under a license and may be used |
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only in accordance with the terms of that license and with the |
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inclusion of the above copyright notice. This software may not |
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be provided or otherwise made available to, or used by, any |
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other person. No title to or ownership of the software is |
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hereby transferred. |
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" |
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||
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SimpleView subclass:#View |
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instanceVariableNames:'model aspectMsg changeMsg menuMsg menuHolder menuPerformer |
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visibilityChannel enableChannel foregroundChannel |
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backgroundChannel' |
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classVariableNames:'' |
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poolDictionaries:'' |
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category:'Views-Basic' |
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! |
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||
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!View class methodsFor:'documentation'! |
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copyright |
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" |
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COPYRIGHT (c) 1989 by Claus Gittinger |
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All Rights Reserved |
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|
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This software is furnished under a license and may be used |
|
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only in accordance with the terms of that license and with the |
|
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inclusion of the above copyright notice. This software may not |
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be provided or otherwise made available to, or used by, any |
|
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other person. No title to or ownership of the software is |
|
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hereby transferred. |
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" |
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! |
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||
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documentation |
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" |
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this class adds provisions for views which show or work on a model. |
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This functionality used to be in View, but has been extracted into SimpleView and |
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this new View class, to take some of the stuff out of views which do not need |
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this functionality (i.e. all views which do only geometry management). |
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Instances of View are seldom used, most views in the system inherit |
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from this class. |
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[Instance variables:] |
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model <nil | any> the model (if any) |
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aspectMsg <nil | Symbol> the aspect; typically |
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dependentViews react on changes |
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of this aspect and update their contents. |
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||
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changeMsg <nil | Symbol> the changeMessage; typically |
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dependentViews send this message to |
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the model to tell it about changes. |
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menuMsg <nil | Symbol> the menuMessage; typically |
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dependentViews send this message to |
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the model to ask for a popup menu. |
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menuHolder <any> who has a menu |
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(default: nil i.e. model has menu) |
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menuPerformer <any> who performs menu actions |
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(default: nil i.e. model has menu) |
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[see also:] |
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StandardSystemView TopView DialogBox |
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WindowGroup |
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Model ValueHolder |
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( introduction to view programming :html: programming/viewintro.html ) |
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[author:] |
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Claus Gittinger |
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" |
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! |
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||
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examples |
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" |
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a subView in a topView: |
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[exBegin] |
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|top v| |
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top := StandardSystemView new. |
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v := View new. |
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v origin:0.25 @ 0.25 corner:0.75 @ 0.75. |
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top addSubView:v. |
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top open |
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[exEnd] |
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||
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the same, a bit more compact: |
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[exBegin] |
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|top v| |
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top := StandardSystemView new. |
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v := View origin:0.25 @ 0.25 corner:0.75 @ 0.75 in:top. |
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top open |
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[exEnd] |
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menuHolder |
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[exBegin] |
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|top mh| |
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mh := (PopUpMenu itemList:#( ('foo' foo) (#'bar' bar)) resources:nil) asValue. |
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top := StandardSystemView extent:200@200. |
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top menuHolder:mh. |
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top open |
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[exEnd] |
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menuHolder |
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[exBegin] |
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|top mh| |
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mh := (PopUpMenu itemList:#( ('foo' foo) (#'bar' bar)) resources:nil) asValue. |
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[ |
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Delay waitForSeconds:5. |
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mh value: (PopUpMenu itemList:#( ('waboo' foo) (#'baz' bar)) resources:nil) |
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] fork. |
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top := StandardSystemView extent:200@200. |
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top menuHolder:mh. |
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top open |
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[exEnd] |
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" |
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! ! |
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!View class methodsFor:'instance creation'! |
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on:aModel aspect:aspectMsg |
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"st-80 style view creation: create a new view, set its model |
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and selectors for aspect" |
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^ self new |
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on:aModel |
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aspect:aspectMsg |
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! |
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on:aModel aspect:aspectMsg change:changeMsg |
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"st-80 style view creation: create a new view, set its model |
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and selectors for aspect and change" |
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^ self new |
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on:aModel |
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aspect:aspectMsg |
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change:changeMsg |
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! |
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on:aModel aspect:aspectMsg change:changeMsg menu:menuMsg |
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"st-80 style view creation: create a new view, set its model |
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and selectors for aspect, change and menu" |
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^ self new |
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on:aModel |
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aspect:aspectMsg |
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change:changeMsg |
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menu:menuMsg |
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! |
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on:aModel aspect:aspectMsg menu:menuMsg |
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"st-80 style view creation: create a new view, set its model |
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and selectors for aspect and menu" |
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^ self new |
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on:aModel |
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aspect:aspectMsg |
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menu:menuMsg |
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! ! |
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!View class methodsFor:'defaults'! |
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defaultAspectMessage |
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"subclasses which by default do NOT want to be informed about changed |
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models should redefine this to return nil" |
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^ #value |
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! |
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defaultChangeMessage |
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"subclasses which by default do NOT want to inform the model |
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should redefine this to return nil" |
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^ #value: |
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! |
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defaultMenuMessage |
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"subclasses which by default do NOT want to send menu messages |
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should return nil" |
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^ nil |
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"Created: 3.1.1997 / 01:50:36 / stefan" |
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! ! |
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!View methodsFor:'accessing-channels'! |
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backgroundChannel |
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"return a valueHolder for background color" |
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^ backgroundChannel |
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"Modified: / 30.3.1999 / 13:49:28 / stefan" |
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"Created: / 30.3.1999 / 13:50:55 / stefan" |
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! |
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backgroundChannel:aValueHolder |
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"set the foregroundChannel - a valueHolder holding a color" |
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|prev| |
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prev := backgroundChannel. |
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backgroundChannel := aValueHolder. |
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self setupChannel:aValueHolder for:nil withOld:prev |
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"Modified: / 31.10.1997 / 14:38:38 / cg" |
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"Created: / 30.3.1999 / 13:48:42 / stefan" |
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! |
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enableChannel |
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"return a valueHolder for enable/disable" |
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^ enableChannel |
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"Created: / 30.3.1999 / 13:46:43 / stefan" |
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! |
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enableChannel:aValueHolder |
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"set the valueHolder, which holds the enable boolean value" |
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|prev| |
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prev := enableChannel. |
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enableChannel := aValueHolder. |
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self setupChannel:aValueHolder for:nil withOld:prev |
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"Modified: / 14.11.1997 / 13:52:44 / cg" |
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"Modified: / 30.3.1999 / 13:50:15 / stefan" |
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! |
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foregroundChannel |
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"return a valueHolder for foreground color" |
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^ foregroundChannel |
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"Modified: / 30.3.1999 / 13:49:28 / stefan" |
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! |
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foregroundChannel:aValueHolder |
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"set the foregroundChannel - a valueHolder holding a color" |
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|prev| |
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prev := foregroundChannel. |
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foregroundChannel := aValueHolder. |
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self setupChannel:aValueHolder for:nil withOld:prev |
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"Modified: / 31.10.1997 / 14:38:38 / cg" |
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"Modified: / 30.3.1999 / 13:50:08 / stefan" |
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! |
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||
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setupChannel:newChannel for:changeSelector withOld:oldChannel |
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"common code to change a channel. |
269 |
If changeSelector is non-nil, arrange for it to be sent when |
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the channel changes its value; otherwise, arrange for a simple update. |
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This is so common, that ist worth a helper method: |
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release any old channel (if non-nil), |
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arrange for changeSelector (or #update) to be sent for the new channel." |
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170 | 274 |
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|oldValue| |
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1945 | 277 |
oldChannel == newChannel ifTrue:[^ self]. |
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oldChannel notNil ifTrue:[ |
1945 | 280 |
changeSelector isNil ifTrue:[ |
281 |
oldChannel removeDependent:self |
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] ifFalse:[ |
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oldChannel retractInterestsFor:self. |
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]. |
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oldValue := oldChannel value. |
170 | 286 |
]. |
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newChannel notNil ifTrue:[ |
1945 | 288 |
changeSelector isNil ifTrue:[ |
289 |
newChannel addDependent:self. |
|
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newChannel value ~~ oldValue ifTrue:[ |
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291 |
self update:#value with:nil from:newChannel. |
|
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] |
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] ifFalse:[ |
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newChannel onChangeSend:changeSelector to:self. |
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newChannel value ~~ oldValue ifTrue:[ |
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self perform:changeSelector. |
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] |
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] |
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]. |
1945 | 300 |
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170 | 301 |
^ newChannel |
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|
1945 | 303 |
"Modified: / 31.10.1997 / 14:47:21 / cg" |
2548 | 304 |
! |
305 |
||
306 |
visibilityChannel |
|
307 |
"return a valueHolder for visible/invisible" |
|
308 |
||
309 |
^ visibilityChannel |
|
310 |
||
311 |
"Modified: / 30.3.1999 / 13:49:56 / stefan" |
|
312 |
! |
|
313 |
||
314 |
visibilityChannel:aValueHolder |
|
315 |
"set the valueHolder, which holds the visible boolean value" |
|
316 |
||
317 |
|prev| |
|
318 |
||
319 |
prev := visibilityChannel. |
|
320 |
visibilityChannel := aValueHolder. |
|
321 |
self setupChannel:aValueHolder for:nil withOld:prev |
|
322 |
||
323 |
" |
|
324 |
|v h| |
|
325 |
||
326 |
v := View new. |
|
327 |
v visibilityChannel:(h := ValueHolder with:true). |
|
328 |
v open. |
|
329 |
Delay waitForSeconds:2. |
|
330 |
h value:false. |
|
331 |
Delay waitForSeconds:2. |
|
332 |
h value:true. |
|
333 |
Delay waitForSeconds:2. |
|
334 |
" |
|
335 |
||
336 |
"Created: / 14.1.1998 / 17:11:15 / stefan" |
|
337 |
"Modified: / 14.1.1998 / 17:33:40 / stefan" |
|
170 | 338 |
! ! |
339 |
||
269 | 340 |
!View methodsFor:'accessing-menus'! |
341 |
||
342 |
menuHolder |
|
343 |
"who has the menu ? |
|
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diff
changeset
|
344 |
If no explicit menuHolder was defined, its the model if I have one. |
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parents:
1146
diff
changeset
|
345 |
Otherwise, its the menuHolder (if nonNil) or mySelf. |
83ed804938e7
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parents:
1146
diff
changeset
|
346 |
The menuHolder is supposed to return a popUpMenu when asked via the |
83ed804938e7
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parents:
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diff
changeset
|
347 |
menuMessage." |
269 | 348 |
|
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|
349 |
menuHolder notNil ifTrue:[^ menuHolder]. |
269 | 350 |
model notNil ifTrue:[^ model]. |
351 |
^ self |
|
1147
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parents:
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diff
changeset
|
352 |
|
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
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parents:
1146
diff
changeset
|
353 |
"Modified: 23.12.1996 / 13:56:55 / cg" |
83ed804938e7
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parents:
1146
diff
changeset
|
354 |
! |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
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parents:
1146
diff
changeset
|
355 |
|
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moved menuHolder/menuPerformer stuff up in the hierarchy
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parents:
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diff
changeset
|
356 |
menuHolder:anObject |
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parents:
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diff
changeset
|
357 |
"change the one that provides the menu (via menuMsg)." |
83ed804938e7
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parents:
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diff
changeset
|
358 |
|
2134 | 359 |
menuHolder := anObject. |
360 |
menuMsg isNil ifTrue:[menuMsg := #value]. |
|
1147
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Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
361 |
|
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moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
362 |
"Created: 23.12.1996 / 13:54:33 / cg" |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
363 |
! |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
364 |
|
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
365 |
menuMessage |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
366 |
"Return the symbol sent to the model to aquire the menu" |
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parents:
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changeset
|
367 |
|
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moved menuHolder/menuPerformer stuff up in the hierarchy
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parents:
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diff
changeset
|
368 |
^ menuMsg |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
369 |
! |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
370 |
|
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
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parents:
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diff
changeset
|
371 |
menuMessage:aSymbol |
83ed804938e7
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parents:
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diff
changeset
|
372 |
"ST-80 style menus: If a views menuSymbol is nonNil, it |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
373 |
will send it to its model when the middleButton is pressed. |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
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1146
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|
374 |
That method should return nil or the menu to be shown. |
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|
375 |
This is useful for very dynamic menus, where it does not |
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parents:
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|
376 |
make sense to define an initial menu. |
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changeset
|
377 |
This is the same as #menu: which was added for ST-80 compatibility." |
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moved menuHolder/menuPerformer stuff up in the hierarchy
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|
378 |
|
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|
379 |
menuMsg := aSymbol |
269 | 380 |
! |
381 |
||
382 |
menuPerformer |
|
383 |
"who should perform the menu actions ? |
|
1147
83ed804938e7
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1146
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changeset
|
384 |
If no menuPerformer was defined, its the model if I have one. |
83ed804938e7
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parents:
1146
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changeset
|
385 |
Otherwise its the menuPerformer (if nonNil), or myself. |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
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1146
diff
changeset
|
386 |
The menuPerformer get messages from the menu" |
269 | 387 |
|
1147
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
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1146
diff
changeset
|
388 |
menuPerformer notNil ifTrue:[^ menuPerformer]. |
269 | 389 |
model notNil ifTrue:[^ model]. |
390 |
^ self |
|
1147
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
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diff
changeset
|
391 |
|
83ed804938e7
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changeset
|
392 |
"Modified: 23.12.1996 / 13:57:18 / cg" |
83ed804938e7
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changeset
|
393 |
! |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
394 |
|
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
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parents:
1146
diff
changeset
|
395 |
menuPerformer:anObject |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
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parents:
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diff
changeset
|
396 |
"change the one that does the menu actions. |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
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parents:
1146
diff
changeset
|
397 |
See the comment in SimpleView>>activateMenu on who gets the menus |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
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parents:
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diff
changeset
|
398 |
message." |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
399 |
|
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
400 |
menuPerformer := anObject |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
401 |
|
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
402 |
" |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
403 |
|top textV plug| |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
404 |
|
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
405 |
plug := Plug new. |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
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parents:
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diff
changeset
|
406 |
plug respondTo:#textMenu |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
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diff
changeset
|
407 |
with:[ |m| |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
408 |
m := PopUpMenu |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
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parents:
1146
diff
changeset
|
409 |
labels:#('copy' 'foo' '-' 'others') |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
410 |
selectors:#(copySelection foo nil others). |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
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parents:
1146
diff
changeset
|
411 |
m subMenuAt:#others |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
412 |
put:(PopUpMenu |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
413 |
labels:#('bar' 'goto') |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
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parents:
1146
diff
changeset
|
414 |
selectors:#(bar gotoLine)) |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
415 |
]. |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
416 |
|
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
417 |
top := StandardSystemView new. |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
418 |
top extent:300@300. |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
419 |
|
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
420 |
textV := TextView origin:0.0@0.0 corner:1.0@1.0 in:top. |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
421 |
textV menuHolder:plug; menuMessage:#textMenu; menuPerformer:plug. |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
422 |
textV contents:'hello world'. |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
423 |
top open. |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
424 |
" |
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
425 |
|
83ed804938e7
moved menuHolder/menuPerformer stuff up in the hierarchy
Claus Gittinger <cg@exept.de>
parents:
1146
diff
changeset
|
426 |
"Created: 23.12.1996 / 13:57:28 / cg" |
2166
d6e05def4f83
added #performer: (dummy - ST80 compatibility)
Claus Gittinger <cg@exept.de>
parents:
2134
diff
changeset
|
427 |
! |
d6e05def4f83
added #performer: (dummy - ST80 compatibility)
Claus Gittinger <cg@exept.de>
parents:
2134
diff
changeset
|
428 |
|
d6e05def4f83
added #performer: (dummy - ST80 compatibility)
Claus Gittinger <cg@exept.de>
parents:
2134
diff
changeset
|
429 |
performer:anObject |
d6e05def4f83
added #performer: (dummy - ST80 compatibility)
Claus Gittinger <cg@exept.de>
parents:
2134
diff
changeset
|
430 |
"same as #menuPerformer - ST80 compatibility" |
d6e05def4f83
added #performer: (dummy - ST80 compatibility)
Claus Gittinger <cg@exept.de>
parents:
2134
diff
changeset
|
431 |
|
d6e05def4f83
added #performer: (dummy - ST80 compatibility)
Claus Gittinger <cg@exept.de>
parents:
2134
diff
changeset
|
432 |
self menuPerformer:anObject |
d6e05def4f83
added #performer: (dummy - ST80 compatibility)
Claus Gittinger <cg@exept.de>
parents:
2134
diff
changeset
|
433 |
|
d6e05def4f83
added #performer: (dummy - ST80 compatibility)
Claus Gittinger <cg@exept.de>
parents:
2134
diff
changeset
|
434 |
"Created: / 6.7.1998 / 13:38:32 / cg" |
269 | 435 |
! ! |
436 |
||
118 | 437 |
!View methodsFor:'accessing-mvc'! |
438 |
||
269 | 439 |
addModelInterfaceTo:aDictionary |
440 |
"this adds entries for all messages sent to my model |
|
441 |
to aDictionary" |
|
442 |
||
443 |
aDictionary at:#aspectMessage put:aspectMsg. |
|
444 |
aDictionary at:#changeMessage put:changeMsg. |
|
445 |
aDictionary at:#menuMessage put:menuMsg. |
|
446 |
||
447 |
" |
|
448 |
Button new modelInterface |
|
449 |
" |
|
450 |
! |
|
135 | 451 |
|
269 | 452 |
aspect |
453 |
"Return the aspect used with changes from/to the model" |
|
454 |
||
455 |
^ aspectMsg |
|
456 |
! |
|
457 |
||
458 |
aspectMessage |
|
459 |
"Return the aspect used with changes from/to the model" |
|
460 |
||
461 |
^ aspectMsg |
|
462 |
! |
|
463 |
||
464 |
aspectMessage:aspectSymbol |
|
465 |
"ST-80 style updating: If a views aspectSymbol is nonNil, |
|
466 |
it will respond to changes of this aspect from the model." |
|
467 |
||
468 |
aspectMsg := aspectSymbol |
|
135 | 469 |
! |
470 |
||
269 | 471 |
change:changeSymbol |
472 |
"ST-80 style change notification: If a views changeSymbol is nonNil, |
|
473 |
it will send it to its model when something changes. |
|
474 |
Alias for changeMessage: for ST-80 compatibility." |
|
475 |
||
476 |
self changeMessage:changeSymbol |
|
477 |
! |
|
478 |
||
479 |
changeMessage |
|
480 |
"Return the symbol sent to the model if nonNil when something changes." |
|
135 | 481 |
|
269 | 482 |
^ changeMsg |
483 |
! |
|
484 |
||
485 |
changeMessage:aSymbol |
|
486 |
"ST-80 style change notification: If a views changeSymbol is nonNil, |
|
487 |
it will send it to its model when something changes. |
|
488 |
This is the same as change: which was added for ST-80 compatibility." |
|
489 |
||
490 |
changeMsg := aSymbol |
|
491 |
! |
|
492 |
||
493 |
controller:aController |
|
494 |
"set the controller" |
|
118 | 495 |
|
269 | 496 |
super controller:aController. |
497 |
controller notNil ifTrue:[ |
|
498 |
controller model:model |
|
0 | 499 |
] |
500 |
! |
|
501 |
||
269 | 502 |
menu:menuSymbol |
503 |
"ST-80 style menus: If a views menuSymbol is nonNil, it |
|
504 |
will send it to its model when the middleButton is pressed. |
|
505 |
That method should return nil or the menu to be shown. |
|
506 |
This is useful for very dynamic menus, where it does not |
|
507 |
make sense to define an initial menu. |
|
508 |
Alias for #menuMessage:, for ST-80 compatibility." |
|
509 |
||
510 |
menuMsg := menuSymbol |
|
511 |
! |
|
512 |
||
118 | 513 |
model |
514 |
"return the model, for non-MVC views, |
|
515 |
this is nil or the receiver" |
|
516 |
||
517 |
^ model |
|
518 |
! |
|
519 |
||
520 |
model:aModel |
|
1151
1a3682212ea9
Move rest of menuHolder/menuPerformer stuff to view.
Stefan Vogel <sv@exept.de>
parents:
1149
diff
changeset
|
521 |
"Set the model. |
1149
a3a75ffb29ce
Set meuPerformer also, when model is set.
Stefan Vogel <sv@exept.de>
parents:
1147
diff
changeset
|
522 |
Here, if I am my own menuPerformer/menuHolder, |
1151
1a3682212ea9
Move rest of menuHolder/menuPerformer stuff to view.
Stefan Vogel <sv@exept.de>
parents:
1149
diff
changeset
|
523 |
set the menuHolder and menuPerformer to the model. |
1a3682212ea9
Move rest of menuHolder/menuPerformer stuff to view.
Stefan Vogel <sv@exept.de>
parents:
1149
diff
changeset
|
524 |
This is a compatibility kludge, |
1149
a3a75ffb29ce
Set meuPerformer also, when model is set.
Stefan Vogel <sv@exept.de>
parents:
1147
diff
changeset
|
525 |
since typically, ST-80 code expects the model to provide a menu |
1151
1a3682212ea9
Move rest of menuHolder/menuPerformer stuff to view.
Stefan Vogel <sv@exept.de>
parents:
1149
diff
changeset
|
526 |
and perform it. If the model does not support a menu message, |
1a3682212ea9
Move rest of menuHolder/menuPerformer stuff to view.
Stefan Vogel <sv@exept.de>
parents:
1149
diff
changeset
|
527 |
it will be forwarded to the view. |
1149
a3a75ffb29ce
Set meuPerformer also, when model is set.
Stefan Vogel <sv@exept.de>
parents:
1147
diff
changeset
|
528 |
Those apps which want the view to provide the (default) menu have to reset |
a3a75ffb29ce
Set meuPerformer also, when model is set.
Stefan Vogel <sv@exept.de>
parents:
1147
diff
changeset
|
529 |
this by sending #menuHolder: message (again)" |
118 | 530 |
|
531 |
model notNil ifTrue:[ |
|
1149
a3a75ffb29ce
Set meuPerformer also, when model is set.
Stefan Vogel <sv@exept.de>
parents:
1147
diff
changeset
|
532 |
model removeDependent:self |
89 | 533 |
]. |
118 | 534 |
model := aModel. |
2524
6a32a348aaa4
relaxed setting of menuPerformer to model,
Claus Gittinger <cg@exept.de>
parents:
2166
diff
changeset
|
535 |
|
6a32a348aaa4
relaxed setting of menuPerformer to model,
Claus Gittinger <cg@exept.de>
parents:
2166
diff
changeset
|
536 |
"/ ST80 kludge start |
6a32a348aaa4
relaxed setting of menuPerformer to model,
Claus Gittinger <cg@exept.de>
parents:
2166
diff
changeset
|
537 |
(menuPerformer == self |
6a32a348aaa4
relaxed setting of menuPerformer to model,
Claus Gittinger <cg@exept.de>
parents:
2166
diff
changeset
|
538 |
and:[menuHolder == self |
6a32a348aaa4
relaxed setting of menuPerformer to model,
Claus Gittinger <cg@exept.de>
parents:
2166
diff
changeset
|
539 |
and:[model isValueModel not]]) ifTrue:[ |
1149
a3a75ffb29ce
Set meuPerformer also, when model is set.
Stefan Vogel <sv@exept.de>
parents:
1147
diff
changeset
|
540 |
menuPerformer := menuHolder := model |
a3a75ffb29ce
Set meuPerformer also, when model is set.
Stefan Vogel <sv@exept.de>
parents:
1147
diff
changeset
|
541 |
]. |
2524
6a32a348aaa4
relaxed setting of menuPerformer to model,
Claus Gittinger <cg@exept.de>
parents:
2166
diff
changeset
|
542 |
"/ ST80 kludge end. |
6a32a348aaa4
relaxed setting of menuPerformer to model,
Claus Gittinger <cg@exept.de>
parents:
2166
diff
changeset
|
543 |
|
118 | 544 |
model notNil ifTrue:[ |
1149
a3a75ffb29ce
Set meuPerformer also, when model is set.
Stefan Vogel <sv@exept.de>
parents:
1147
diff
changeset
|
545 |
aModel addDependent:self |
118 | 546 |
]. |
547 |
controller notNil ifTrue:[ |
|
1149
a3a75ffb29ce
Set meuPerformer also, when model is set.
Stefan Vogel <sv@exept.de>
parents:
1147
diff
changeset
|
548 |
controller model:aModel |
1395
7218ca27d752
moved class>.model to superClass.
Claus Gittinger <cg@exept.de>
parents:
1152
diff
changeset
|
549 |
]. |
1149
a3a75ffb29ce
Set meuPerformer also, when model is set.
Stefan Vogel <sv@exept.de>
parents:
1147
diff
changeset
|
550 |
|
1395
7218ca27d752
moved class>.model to superClass.
Claus Gittinger <cg@exept.de>
parents:
1152
diff
changeset
|
551 |
"Modified: 28.2.1997 / 19:23:06 / cg" |
118 | 552 |
! |
553 |
||
140 | 554 |
modelInterface |
555 |
"this returns a dictionary of messages sent to my model. |
|
556 |
It can be used for builders and wrappers to get information |
|
557 |
about the messages sent to my model. |
|
558 |
The returned dictionary contains one entry for each get-Msg, |
|
559 |
and the recevier will implement corresponding messages (with a colon) |
|
560 |
to set the message symbol." |
|
561 |
||
562 |
|d| |
|
563 |
||
564 |
d := IdentityDictionary new. |
|
565 |
self addModelInterfaceTo:d. |
|
566 |
^ d |
|
567 |
||
568 |
" |
|
569 |
Button new modelInterface |
|
570 |
Label new modelInterface |
|
571 |
" |
|
572 |
||
573 |
" |
|
574 |
does the view support setting the menuMessage ? |
|
575 |
||
576 |
SelectionInListView new modelInterface includesKey:#menuMessage |
|
577 |
" |
|
578 |
||
579 |
" |
|
580 |
turn off all interaction to the model: |
|
581 |
||
582 |
|m v if| |
|
583 |
||
584 |
m := SelectionInList new. |
|
585 |
m list:#('one' 'two' 'tree' 'four') asValue. |
|
586 |
m selection:1 asValue. |
|
587 |
v := SelectionInListView on:m. |
|
588 |
v open. |
|
589 |
v inspect. |
|
590 |
||
591 |
if := v modelInterface. |
|
592 |
if inspect. |
|
593 |
||
594 |
if keysAndValuesDo:[:what :msg | |
|
595 |
v perform:(what , ':') asSymbol with:nil. |
|
596 |
]. |
|
597 |
" |
|
269 | 598 |
! |
599 |
||
600 |
on:aModel aspect:aspectSymbol |
|
601 |
"ST-80 compatibility: set model and aspect |
|
602 |
messages - needs a view which uses these" |
|
603 |
||
604 |
aspectMsg := aspectSymbol. |
|
605 |
self model:aModel. |
|
606 |
! |
|
607 |
||
608 |
on:aModel aspect:aspectSymbol change:changeSymbol |
|
609 |
"ST-80 compatibility: set model, aspect and change |
|
610 |
messages - needs a view which uses these" |
|
611 |
||
612 |
aspectMsg := aspectSymbol. |
|
613 |
changeMsg := changeSymbol. |
|
614 |
self model:aModel. |
|
615 |
! |
|
616 |
||
617 |
on:aModel aspect:aspectSymbol change:changeSymbol menu:menuSymbol |
|
618 |
"ST-80 compatibility: set model, aspect, change and menu |
|
619 |
messages - needs a view which uses these" |
|
620 |
||
621 |
aspectMsg := aspectSymbol. |
|
622 |
changeMsg := changeSymbol. |
|
623 |
menuMsg := menuSymbol. |
|
624 |
self model:aModel. |
|
625 |
! |
|
626 |
||
627 |
on:aModel aspect:aspectSymbol menu:menuSymbol |
|
628 |
"ST-80 compatibility: set model, aspect and menu |
|
629 |
messages - needs a view which uses these" |
|
630 |
||
631 |
aspectMsg := aspectSymbol. |
|
632 |
menuMsg := menuSymbol. |
|
633 |
self model:aModel. |
|
634 |
! |
|
635 |
||
636 |
sendChangeMessage:aSelector with:arg |
|
637 |
"tell the model about a change" |
|
638 |
||
639 |
|n selector| |
|
640 |
||
641 |
"/ |
|
642 |
"/ MVC way of doing it: |
|
643 |
"/ if the model is a block, evaluate it, optionally |
|
644 |
"/ passing the arg and the receiver as arguments. |
|
645 |
"/ |
|
646 |
"/ otherwise (the common case) send it a changeMsg message |
|
647 |
"/ also with arg and the receiver (depending on the number of arguments |
|
648 |
"/ as defined by the selector). |
|
649 |
"/ |
|
650 |
(model notNil and:[aSelector notNil]) ifTrue:[ |
|
651 |
n := aSelector numArgs. |
|
652 |
model isBlock ifTrue:[ |
|
653 |
n := model numArgs. |
|
654 |
n == 0 ifTrue:[ |
|
655 |
selector := #value |
|
656 |
] ifFalse:[ |
|
657 |
n == 1 ifTrue:[ |
|
658 |
selector := #value: |
|
659 |
] ifFalse:[ |
|
660 |
selector := #value:value: |
|
661 |
] |
|
662 |
] |
|
663 |
] ifFalse:[ |
|
664 |
selector := aSelector |
|
665 |
]. |
|
666 |
n == 0 ifTrue:[ |
|
667 |
model perform:selector |
|
668 |
] ifFalse:[ |
|
669 |
n == 1 ifTrue:[ |
|
670 |
model perform:selector with:arg |
|
671 |
] ifFalse:[ |
|
672 |
model perform:selector with:arg with:self |
|
673 |
] |
|
674 |
] |
|
675 |
] |
|
676 |
! |
|
677 |
||
678 |
sendChangeMessageWith:arg |
|
679 |
"tell the model about a change" |
|
680 |
||
681 |
self sendChangeMessage:changeMsg with:arg |
|
72 | 682 |
! ! |
683 |
||
2548 | 684 |
!View methodsFor:'change & update'! |
685 |
||
686 |
update:something with:aParameter from:changedObject |
|
687 |
||
688 |
changedObject == enableChannel ifTrue:[ |
|
2556
27e9e1cc8cb3
renambe #enableStateChange and #visibilityStateChange
Claus Gittinger <cg@exept.de>
parents:
2548
diff
changeset
|
689 |
self enableStateChanged. |
2548 | 690 |
^ self |
691 |
]. |
|
692 |
changedObject == visibilityChannel ifTrue:[ |
|
2556
27e9e1cc8cb3
renambe #enableStateChange and #visibilityStateChange
Claus Gittinger <cg@exept.de>
parents:
2548
diff
changeset
|
693 |
self visibilityStateChanged. |
2548 | 694 |
^ self |
695 |
]. |
|
696 |
changedObject == backgroundChannel ifTrue:[ |
|
697 |
self backgroundColor:(backgroundChannel value). |
|
698 |
^ self |
|
699 |
]. |
|
700 |
changedObject == foregroundChannel ifTrue:[ |
|
701 |
self foregroundColor:(foregroundChannel value). |
|
702 |
^ self |
|
703 |
]. |
|
704 |
super update:something with:aParameter from:changedObject |
|
705 |
||
706 |
"Created: / 14.1.1998 / 17:10:11 / stefan" |
|
707 |
"Modified: / 30.3.1999 / 13:52:31 / stefan" |
|
708 |
! ! |
|
709 |
||
269 | 710 |
!View methodsFor:'drawing'! |
118 | 711 |
|
269 | 712 |
redraw |
713 |
"redraw myself |
|
714 |
if there is a model, this one shall redraw itself, |
|
715 |
otherwise we cannot do much here - has to be redefined in subclasses" |
|
118 | 716 |
|
269 | 717 |
model notNil ifTrue:[ |
718 |
model update:self |
|
719 |
] |
|
118 | 720 |
! ! |
721 |
||
2548 | 722 |
!View methodsFor:'event handling'! |
723 |
||
2556
27e9e1cc8cb3
renambe #enableStateChange and #visibilityStateChange
Claus Gittinger <cg@exept.de>
parents:
2548
diff
changeset
|
724 |
enableStateChanged |
2548 | 725 |
"called to update enable/disable state" |
726 |
||
727 |
self enabled:(enableChannel value) |
|
728 |
||
729 |
"Modified: / 30.3.1999 / 16:07:08 / stefan" |
|
730 |
! |
|
731 |
||
2556
27e9e1cc8cb3
renambe #enableStateChange and #visibilityStateChange
Claus Gittinger <cg@exept.de>
parents:
2548
diff
changeset
|
732 |
visibilityStateChanged |
2548 | 733 |
"this is called when our visibilityChannel changes" |
734 |
||
735 |
self isVisible:(visibilityChannel value) |
|
736 |
||
737 |
"Modified: / 30.3.1999 / 16:09:14 / stefan" |
|
738 |
! ! |
|
739 |
||
2573 | 740 |
!View methodsFor:'initialize / release'! |
741 |
||
742 |
destroy |
|
743 |
"unrealize & destroy - make me invisible, destroy subviews then |
|
744 |
make me unknown to the device" |
|
745 |
||
746 |
model notNil ifTrue:[ |
|
747 |
model removeDependent:self. |
|
748 |
model := nil. |
|
749 |
]. |
|
750 |
super destroy. |
|
751 |
! |
|
118 | 752 |
|
753 |
initialize |
|
754 |
super initialize. |
|
140 | 755 |
|
756 |
aspectMsg := self class defaultAspectMessage. |
|
757 |
changeMsg := self class defaultChangeMessage. |
|
1151
1a3682212ea9
Move rest of menuHolder/menuPerformer stuff to view.
Stefan Vogel <sv@exept.de>
parents:
1149
diff
changeset
|
758 |
menuMsg := self class defaultMenuMessage. |
1a3682212ea9
Move rest of menuHolder/menuPerformer stuff to view.
Stefan Vogel <sv@exept.de>
parents:
1149
diff
changeset
|
759 |
|
135 | 760 |
model notNil ifTrue:[ |
1151
1a3682212ea9
Move rest of menuHolder/menuPerformer stuff to view.
Stefan Vogel <sv@exept.de>
parents:
1149
diff
changeset
|
761 |
controller notNil ifTrue:[ |
1a3682212ea9
Move rest of menuHolder/menuPerformer stuff to view.
Stefan Vogel <sv@exept.de>
parents:
1149
diff
changeset
|
762 |
controller model:model |
1a3682212ea9
Move rest of menuHolder/menuPerformer stuff to view.
Stefan Vogel <sv@exept.de>
parents:
1149
diff
changeset
|
763 |
] |
81 | 764 |
]. |
1151
1a3682212ea9
Move rest of menuHolder/menuPerformer stuff to view.
Stefan Vogel <sv@exept.de>
parents:
1149
diff
changeset
|
765 |
|
1152
21c666e130dd
menuHolder/menuPerformer stuff.
Stefan Vogel <sv@exept.de>
parents:
1151
diff
changeset
|
766 |
"Modified: 3.1.1997 / 02:11:15 / stefan" |
118 | 767 |
! ! |
768 |
||
269 | 769 |
!View class methodsFor:'documentation'! |
770 |
||
771 |
version |
|
2573 | 772 |
^ '$Header: /cvs/stx/stx/libview/View.st,v 1.65 1999-04-23 12:50:20 cg Exp $' |
269 | 773 |
! ! |