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"
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COPYRIGHT (c) 1994 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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Button subclass:#PopUpList
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instanceVariableNames:'menu menuAction values'
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classVariableNames:''
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poolDictionaries:''
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category:'Views-Interactors'
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!
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PopUpList comment:'
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COPYRIGHT (c) 1994 by Claus Gittinger
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All Rights Reserved
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$Header: /cvs/stx/stx/libwidg/PopUpList.st,v 1.6 1995-02-06 00:53:02 claus Exp $
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'!
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!PopUpList class methodsFor:'documentation'!
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copyright
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"
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COPYRIGHT (c) 1994 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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version
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"
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$Header: /cvs/stx/stx/libwidg/PopUpList.st,v 1.6 1995-02-06 00:53:02 claus Exp $
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"
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!
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documentation
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"
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a PopUpList is basically a button with a popup menu.
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The PopUpLists label is showing the current selection from the
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list.
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"
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!
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examples
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"
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example use:
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|p|
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p := PopUpList label:'healthy fruit'.
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p list:#('apples' 'bananas' 'grape' 'lemon' 'margarithas').
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p open
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with an initial selection:
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|p|
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p := PopUpList label:'dummy'.
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p list:#('apples' 'bananas' 'grape' 'lemon' 'margarithas').
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p selection:'apples'.
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p open
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with separating lines:
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|p|
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p := PopUpList label:'dummy'.
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p list:#('apples' 'bananas' 'grape' 'lemon' '-' 'margarithas').
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p selection:'apples'.
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p open
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with an action:
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|p|
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p := PopUpList label:'dummy'.
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p list:#('apples' 'bananas' 'grape' 'lemon' '-' 'margarithas').
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p selection:'apples'.
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p action:[:what | Transcript showCr:'you selected: ' , what].
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p open
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with values different from the label strings:
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|p|
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p := PopUpList label:'dummy'.
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p list:#('apples' 'bananas' 'grape' 'lemon' '-' 'margarithas').
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p selection:'apples'.
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p values:#(10 20 30 40 nil 50).
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p action:[:what | Transcript show:'you selected: '; showCr:what].
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p open
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"
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! !
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!PopUpList methodsFor:'drawing'!
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drawWith:fgColor and:bgColor
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|mmH mmV mW mH|
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controller pressed ifTrue:[
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super drawWith:enteredFgColor and:enteredBgColor
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] ifFalse:[
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super drawWith:fgColor and:bgColor.
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].
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mmH := device horizontalPixelPerMillimeter rounded.
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mmV := device verticalPixelPerMillimeter rounded.
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mW := (device horizontalPixelPerMillimeter * 2.5) rounded.
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mH := (device verticalPixelPerMillimeter * 1.5) rounded.
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self drawEdgesForX:(width - mW - (hSpace*2)) y:(height - mmV // 2)
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width:mW height:mH level:2
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! !
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!PopUpList methodsFor:'event handling'!
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popMenu
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|org mv|
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menu notNil ifTrue:[
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self turnOff.
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menu font:font.
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"
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adjust the menus width to my current width
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"
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mv := menu menuView.
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mv width:(self width - (2 * menu margin) - (menu borderWidth*2)).
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mv level:0; borderWidth:0.
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mv fixSize.
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"
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the popupMenu wants Display coordinates in its showAt: method
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"
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org := device translatePoint:0@0
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from:(self id)
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to:(DisplayRootView new id).
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menu showAt:org "resizing:false"
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].
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! !
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!PopUpList methodsFor:'initialization'!
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initialize
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super initialize.
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controller beTriggerOnDown.
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controller action:[self popMenu].
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self adjust:#left
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! !
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!PopUpList methodsFor:'accessing'!
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model:aModel
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"set the model - this is forwarded to my menu.
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The popuplist itself has no model"
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menu model:aModel
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model
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"return the model - this is forwarded to my menu.
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The popuplist itself has no model"
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^ menu model
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!
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change:aSymbol
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"set the change symbol - this is forwarded to my menu.
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The popuplist itself has no model"
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menu change:aSymbol
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changeSymbol
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"return the change symbol - this is forwarded to my menu.
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The popuplist itself has no model"
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^ menu changeSymbol
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!
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action:aOneArgBlock
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"set the action to be performed on selection changes;
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the argument, aOneArgBlock will be evaluated with the
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selection-value as argument"
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menuAction := aOneArgBlock
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!
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list
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"return the list - i.e. the values shown in the pop-up list"
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^ menu labels
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!
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list:aList
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"set the list - i.e. the values shown in the pop-up list"
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menu := PopUpMenu
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labels:aList
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selectors:(Array new:(aList size) withAll:#select:)
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args:aList
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receiver:self
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for:self.
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realized ifTrue:[
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self computeLabelSize
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]
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"
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|p|
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p := PopUpList label:'fruit ?'.
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p list:#('apples' 'bananas' 'grape' 'lemon' 'margarithas').
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p open
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"
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!
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values:aList
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"set a value list - these are reported via the action or changeSymbol instead of
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the labe strings."
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values := aList.
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menu args:(1 to:aList size).
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"
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|p|
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p := PopUpList label:'fruit ?'.
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p list:#('apples' 'bananas' 'grape' 'lemon' 'margarithas').
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p values:#(1 2 3 4 'mhmh - good').
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p open
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"
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!
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selection:indexOrString
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"set (force) a selection - usually done to set
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an initial selection"
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|index|
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index := menu labels indexOf:indexOrString.
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index == 0 ifTrue:[
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indexOrString isNumber ifTrue:[
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index := indexOrString
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] ifFalse:[
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^ self
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]
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].
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self label:(menu labels at:index)
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"
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|p|
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p := PopUpList label:'what fruit ?'.
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p list:#('apples' 'bananas' 'grape' 'lemon' 'margarithas').
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p selection:'apples'.
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p open
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"
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! !
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!PopUpList methodsFor:'private'!
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computeLabelSize
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"compute the extent needed to hold the label plus the mark"
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|mmH mmV savedLogo longest longestWidth|
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menu isNil ifTrue:[
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super computeLabelSize
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] ifFalse:[
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"hack: simulate logo change to longest menu entry"
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font := font on:device.
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longest := logo.
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longestWidth := font widthOf:logo.
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menu labels do:[:entry |
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|this|
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this := font widthOf:entry printString.
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this > longestWidth ifTrue:[
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longest := entry.
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longestWidth := this
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].
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].
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savedLogo := logo.
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logo := longest.
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super computeLabelSize.
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logo := savedLogo.
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"self halt. "
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].
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mmH := device horizontalPixelPerMillimeter.
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mmV := device verticalPixelPerMillimeter.
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labelWidth := labelWidth + hSpace + (mmH * 2.5) rounded + hSpace.
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labelHeight := labelHeight max: (mmV * 2) rounded
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! !
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!PopUpList methodsFor:'user actions'!
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select:anEntry
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|value label|
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"/ 'selected:' print. anEntry printNewline.
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values isNil ifTrue:[
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label := value := anEntry
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] ifFalse:[
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label := menu labels at:anEntry.
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value := values at:anEntry
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].
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menuAction notNil ifTrue:[
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menuAction value:value.
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].
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self sizeFixed:true.
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self label:label printString.
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(model notNil and:[changeSymbol notNil]) ifTrue:[
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model perform:changeSymbol with:value
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].
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! !
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