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"{ Package: 'stx:libtool2' }"
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"{ NameSpace: Tools }"
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ValueModel subclass:#ViewTreeModel
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instanceVariableNames:'lockSema selectedSuperItems selection hiddenLevel listOfItems
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inputEventAction mappedViewAction beforeSelectionChangedAction
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testMode icons timedUpdateTask selectOnClickHolder'
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classVariableNames:''
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poolDictionaries:''
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category:'A-Views-Support'
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!
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HierarchicalList subclass:#ItemList
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instanceVariableNames:'treeModel eventHook eventHookInitialized'
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classVariableNames:''
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poolDictionaries:''
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privateIn:ViewTreeModel
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!
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!ViewTreeModel class methodsFor:'documentation'!
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documentation
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"
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Instances of ViewTreeModel can be used as model on a View and all
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it contained subviews for a HierarchicalListView.
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The model keeps two values, the hierarchical representation of the views
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and subviews (ViewTreeItems) and the selection, a list of selected ViewTreeItems's.
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It shows the selected items highlighted.
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[Instance variables:]
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lockSema <Semaphore> lock selection notifications and redraws
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testMode <Boolean> true, the selection is not highlighted and
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all input events are eaten.
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selection <Sequence or nil> selected items or nil
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hiddenLevel <Integer> internal use; redrawing the selection
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only is done if the counter is 0.
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listOfItems <HierarchicalList> hiearchical list build from existing items.
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selectedSuperItems <Sequence> list of selected super items; items selected
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but not contained in another selected item.
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inputEventAction <Action> called for each InputEvent
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mappedViewAction <Action> called for a new mapped view which
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can not be found in the current item list.
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beforeSelectionChangedAction <Action> called before the selection changed
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[author:]
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Claus Atzkern
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[see also:]
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ViewTreeItem
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"
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!
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examples
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"
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example 1: pick any window and show views and contained views
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[exBegin]
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|top sel model panel|
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model := ViewTreeModel new.
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top := StandardSystemView new; extent:440@400.
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sel := ScrollableView for:HierarchicalListView miniScroller:true origin:0.0@0.0 corner:1.0@1.0 in:top.
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sel bottomInset:24.
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panel := HorizontalPanelView origin:0.0@1.0 corner:1.0@1.0 in:top.
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panel topInset:-24.
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panel horizontalLayout:#fitSpace.
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Button label:'Exit' action:[model rootItem:nil. top destroy] in:panel.
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Button label:'Pick Views' action:[ |win|
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( (win := Screen current viewFromUser) notNil
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and:[(win := win topView) ~~ Screen current rootView
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and:[win ~~ top]]
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) ifTrue:[
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model rootItem:(ViewTreeItem buildViewsFrom:win)
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] ifFalse:[
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model rootItem:nil
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]
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] in:panel.
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sel multipleSelectOk:true.
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sel list:model listOfItems.
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sel model:model.
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sel useIndex:false.
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sel doubleClickAction:[:i| |el|
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el := model listOfItems at:i.
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el spec notNil ifTrue:[ el spec inspect ] ifFalse:[ el widget inspect ]
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].
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sel indicatorAction:[:i| (model listOfItems at:i) toggleExpand ].
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model inputEventAction:[:anEvent| |item|
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anEvent isButtonEvent ifTrue:[
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anEvent isButtonPressEvent ifTrue:[
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model selectedItem:(model listOfItems detectItemRespondsToView:(anEvent view)).
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] ifFalse:[
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anEvent type == #'buttonMultiPress:x:y:' ifTrue:[
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(item := model selectedItem) notNil ifTrue:[item widget inspect]
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]
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]
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]
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].
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top openAndWait.
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[[top shown] whileTrue:[Delay waitForSeconds:0.5]. model rootItem:nil] forkAt:8
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[exEnd]
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"
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! !
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!ViewTreeModel methodsFor:'accessing'!
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application:anApplication
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listOfItems application:anApplication.
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!
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listOfItems
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"hiearchical list build from existing items
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"
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^ listOfItems
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!
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rootItem
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"get the rootItem the event viewer is established on
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"
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^ listOfItems root
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!
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rootItem:anItem
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"set the rootItem the event viewer is established on
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"
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|expanded|
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timedUpdateTask := nil.
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lockSema critical:[
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anItem notNil ifTrue:[ expanded := anItem isExpanded ]
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ifFalse:[ expanded := false ].
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self value:nil.
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listOfItems root:anItem.
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anItem notNil ifTrue:[
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timedUpdateTask := Process for:[ self timedUpdateTaskCycle ] priority:8.
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timedUpdateTask name:'Update'.
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timedUpdateTask resume.
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].
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].
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(expanded and:[anItem notNil]) ifTrue:[
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anItem expand
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].
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^ anItem
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!
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rootView
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"get the top widget the event viewer is established on, a View
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"
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^ listOfItems rootView
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! !
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!ViewTreeModel methodsFor:'accessing actions'!
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beforeSelectionChangedAction
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"none argument action which is called before
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the selection changed
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"
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^ beforeSelectionChangedAction
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!
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beforeSelectionChangedAction:aNoneArgBlock
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"none argument action which is called before
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the selection changed
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"
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beforeSelectionChangedAction := aNoneArgBlock.
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!
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inputEventAction
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"called for each input event; the argument to the action is the WindowEvent
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"
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^ inputEventAction
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!
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inputEventAction:aOneArgActionTheEvent
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"called for each input event; the argument to the action is the WindowEvent
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"
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inputEventAction := aOneArgActionTheEvent.
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!
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mappedViewAction
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"called for a new mapped view which can not be found
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in the current item list
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"
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^ mappedViewAction
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!
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mappedViewAction:aOneArgBlockTheMappedView
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"called for a new mapped view which can not be found
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in the current item list
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"
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mappedViewAction := aOneArgBlockTheMappedView
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! !
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!ViewTreeModel methodsFor:'accessing look'!
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iconAt:aKey ifNonePut:aNoneArgBlock
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|icon view|
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icon := icons at:aKey ifAbsent:nil.
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icon notNil ifTrue:[^ icon].
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icon := aNoneArgBlock value.
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icon isNil ifTrue:[^ nil].
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view := self rootView.
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view isNil ifTrue:[^ icon].
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icon := icon copy onDevice:(view device).
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icon isImage ifTrue:[
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icon clearMaskedPixels.
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].
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icons at:aKey put:icon.
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^ icon
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! !
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!ViewTreeModel methodsFor:'accessing visibility'!
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selectOnClickHolder
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"boolean holder, which indicates whether the selection will change on click
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"
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^ selectOnClickHolder
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!
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signalHiddenLevel
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"show the selection if signaled; increments hiddenLevel
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see: #waitHiddenLevel
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"
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(hiddenLevel := hiddenLevel - 1) < 1 ifTrue:[
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hiddenLevel := 0.
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self invalidateSelection.
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].
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!
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testMode
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"false, than all input events are eaten and the selection
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is shown on the target view
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"
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^ testMode
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!
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testMode:aBoolean
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"false, than all input events are eaten and the selection
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is shown on the target view
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"
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testMode ~~ aBoolean ifTrue:[
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self withSelectionHiddenDo:[
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self value:nil.
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testMode := aBoolean.
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].
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].
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!
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waitHiddenLevel
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"hide the selection until signaled; increments hiddenLevel
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see: #signalHiddenLevel
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"
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self redrawUnselected:selection andLock:true
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!
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withSelectionHiddenDo:aNoneArgumentBlock
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"apply block with selection hidden
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"
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[ self waitHiddenLevel.
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aNoneArgumentBlock value
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] valueNowOrOnUnwindDo:[
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self signalHiddenLevel.
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].
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! !
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!ViewTreeModel methodsFor:'change & update'!
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timedUpdateTaskCycle
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|view myTaskId|
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myTaskId := timedUpdateTask.
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listOfItems root notNil ifTrue:[
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view := listOfItems root widget.
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].
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[ view notNil ] whileTrue:[
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Delay waitForSeconds:0.5.
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(myTaskId == timedUpdateTask and:[view id notNil]) ifFalse:[
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view := nil.
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] ifTrue:[
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(view sensor hasUserEvent:#updateChildren for:self) ifFalse:[
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view sensor pushUserEvent:#updateChildren for:self.
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].
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].
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].
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timedUpdateTask == myTaskId ifTrue:[
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timedUpdateTask := nil.
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listOfItems root:nil.
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].
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!
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updateChildren
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|rootItem|
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rootItem := listOfItems root.
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rootItem isNil ifTrue:[^ self].
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rootItem exists ifFalse:[
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listOfItems root:nil.
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] ifTrue:[
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rootItem updateChildren.
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].
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! !
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!ViewTreeModel methodsFor:'event processing'!
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processEvent:anEvent
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"catch and process all WindowEvents for the rootComponent and its contained
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widgets; redraw selection in case of damage ....
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"
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|evView item rootView|
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evView := anEvent view.
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evView isNil ifTrue:[
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(anEvent isMessageSendEvent and:[anEvent receiver == self]) ifFalse:[
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^ false
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].
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anEvent value.
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^ true.
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].
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rootView := listOfItems rootView.
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rootView isNil ifTrue:[ ^ false ].
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anEvent isConfigureEvent ifTrue:[
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hiddenLevel == 0 ifTrue:[
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self redrawUnselected:selection andLock:false.
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].
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^ false
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].
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"/ check whether view is contained within the rootView
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(evView == rootView or:[evView isComponentOf:rootView]) ifFalse:[
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^ false
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].
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anEvent isInputEvent ifFalse:[
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anEvent isDamage ifTrue:[
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hiddenLevel == 0 ifTrue:[self invalidateSelection].
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^ false
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].
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anEvent isMapEvent ifTrue:[
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mappedViewAction notNil ifTrue:[
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item := listOfItems recursiveDetect:[:el| el widget == evView].
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item isNil ifTrue:[ mappedViewAction value:evView ]
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].
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^ false
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].
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anEvent type == #terminate ifTrue:[
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item := listOfItems recursiveDetect:[:el| el widget == evView].
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item notNil ifTrue:[ self processTerminateForItem:item ].
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^ false
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].
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^ false
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].
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anEvent isFocusEvent ifTrue:[
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evView == rootView ifTrue:[
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self invalidateSelection
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].
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^ testMode not.
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].
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anEvent isPointerEnterLeaveEvent ifTrue:[ ^ testMode not ].
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testMode ifFalse:[
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inputEventAction notNil ifTrue:[ inputEventAction value:anEvent ].
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] ifTrue:[
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anEvent isButtonPressEvent ifTrue:[
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selectOnClickHolder value ifTrue:[
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self selectItem:(listOfItems detectItemRespondsToView:evView).
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].
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]
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].
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(hiddenLevel ~~ 0 and:[anEvent isButtonReleaseEvent]) ifTrue:[
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hiddenLevel := 1.
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self signalHiddenLevel.
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].
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^ testMode not
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!
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processTerminateForItem:anItem
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"received terminate for an item
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"
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anItem remove.
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! !
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!ViewTreeModel methodsFor:'initialization'!
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initialize
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"setup the default attributes
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"
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super initialize.
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hiddenLevel := 0.
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lockSema := RecursionLock new.
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listOfItems := ItemList new on:self.
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selectedSuperItems := #().
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testMode := false.
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icons := IdentityDictionary new.
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selectOnClickHolder := true asValue.
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! !
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!ViewTreeModel methodsFor:'private selection'!
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invalidateSelection
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"invalidate the current selection
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"
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|topView|
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testMode ifTrue:[ ^ self ]. "/ test whether running testMode
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( hiddenLevel == 0
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and:[selection notNil
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and:[(topView := listOfItems rootView) notNil
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and:[topView shown]]]
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) ifTrue:[
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topView sensor pushUserEvent:#redrawSelection for:self withArguments:#()
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]
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!
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recursiveRepair:theDamages startIn:aView relativeTo:aRootView
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"repair all views and contained views, which intersects the damage.
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!!!! all damages repaired are removed from the list of damages !!!!
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"
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|color relOrg damage subViews repaired
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bwWidth "{ Class:SmallInteger }"
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x "{ Class:SmallInteger }"
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y "{ Class:SmallInteger }"
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w "{ Class:SmallInteger }"
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h "{ Class:SmallInteger }"
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relOrgX "{ Class:SmallInteger }"
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relOrgY "{ Class:SmallInteger }"
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width "{ Class:SmallInteger }"
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height "{ Class:SmallInteger }"
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size "{ Class:SmallInteger }"
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(aView shown and:[theDamages notEmpty]) ifFalse:[ ^ self ].
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subViews := aView subViews.
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subViews size ~~ 0 ifTrue:[
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subViews reverseDo:[:v| self recursiveRepair:theDamages startIn:v relativeTo:aRootView ].
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theDamages isEmpty ifTrue:[ ^ self ].
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].
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|
476 |
relOrg := aView originRelativeTo:aRootView.
|
|
477 |
bwWidth := aView borderWidth.
|
|
478 |
size := theDamages size.
|
|
479 |
|
|
480 |
"/ compute relative origin starting from border left@top
|
|
481 |
relOrgX := relOrg x - bwWidth.
|
|
482 |
relOrgY := relOrg y - bwWidth.
|
|
483 |
width := aView width + bwWidth + bwWidth.
|
|
484 |
height := aView height + bwWidth + bwWidth.
|
|
485 |
|
|
486 |
size to:1 by:-1 do:[:anIndex|
|
|
487 |
repaired := damage := theDamages at:anIndex.
|
|
488 |
|
|
489 |
"/ compute the rectangle into the view
|
|
490 |
y := damage top - relOrgY.
|
|
491 |
x := damage left - relOrgX.
|
|
492 |
w := damage width.
|
|
493 |
h := damage height.
|
|
494 |
|
|
495 |
x < 0 ifTrue:[ w := w + x. x := 0. repaired := nil ].
|
|
496 |
y < 0 ifTrue:[ h := h + y. y := 0. repaired := nil ].
|
|
497 |
x + w > width ifTrue:[ w := width - x. repaired := nil ].
|
|
498 |
y + h > height ifTrue:[ h := height - y. repaired := nil ].
|
|
499 |
|
|
500 |
(w > 0 and:[h > 0]) ifTrue:[
|
|
501 |
bwWidth ~~ 0 ifTrue:[
|
|
502 |
color isNil ifTrue:[
|
|
503 |
"/ must force redraw of border
|
|
504 |
color := aView borderColor.
|
|
505 |
aView borderColor:(Color colorId:1).
|
|
506 |
aView borderColor:color.
|
|
507 |
].
|
|
508 |
w := w - bwWidth.
|
|
509 |
h := h - bwWidth.
|
|
510 |
|
|
511 |
(x := x - bwWidth) < 0 ifTrue:[w := w + x. x := 0].
|
|
512 |
(y := y - bwWidth) < 0 ifTrue:[h := h + y. y := 0].
|
|
513 |
|
|
514 |
h > 0 ifFalse:[w := 0]. "/ later testing on width only
|
|
515 |
].
|
|
516 |
|
|
517 |
w > 0 ifTrue:[
|
|
518 |
aView clearRectangleX:x y:y width:w height:h.
|
|
519 |
aView exposeX:x y:y width:w height:h
|
|
520 |
].
|
|
521 |
repaired notNil ifTrue:[ theDamages removeFromIndex:anIndex toIndex:anIndex ].
|
|
522 |
]
|
|
523 |
].
|
|
524 |
!
|
|
525 |
|
|
526 |
redrawSelection
|
|
527 |
"redraw all items selected
|
|
528 |
"
|
|
529 |
|topView size|
|
|
530 |
|
|
531 |
testMode ifTrue:[ ^ self ]. "/ test whether running testMode
|
|
532 |
|
|
533 |
( hiddenLevel == 0
|
|
534 |
and:[(size := selection size) > 0
|
|
535 |
and:[(topView := listOfItems rootView) notNil
|
|
536 |
and:[topView shown
|
|
537 |
and:[(topView sensor hasEvent:#redrawSelection for:self) not]]]]
|
|
538 |
) ifFalse:[
|
|
539 |
^ self
|
|
540 |
].
|
|
541 |
|
|
542 |
lockSema critical:[
|
|
543 |
topView paint:(Color black).
|
|
544 |
|
|
545 |
topView clippedByChildren:false.
|
|
546 |
|
|
547 |
selection keysAndValuesReverseDo:[:anIndex :anItem|
|
|
548 |
(anIndex == 1 and:[size > 1]) ifTrue:[ topView paint:(Color red) ].
|
|
549 |
|
|
550 |
anItem handlesDo:[:aRect :what|
|
|
551 |
what isNil ifTrue:[topView displayRectangle:aRect]
|
|
552 |
ifFalse:[topView fillRectangle:aRect]
|
|
553 |
]
|
|
554 |
].
|
|
555 |
topView clippedByChildren:true.
|
|
556 |
].
|
|
557 |
!
|
|
558 |
|
|
559 |
redrawUnselected:aList andLock:doLock
|
|
560 |
"redraw all items unselected; if doLock is true, the hiddenLevel
|
|
561 |
is incremented and thus the select mechanism is locked.
|
|
562 |
"
|
|
563 |
|rootView damages subViews x y w h|
|
|
564 |
|
|
565 |
doLock ifTrue:[
|
|
566 |
hiddenLevel := hiddenLevel + 1.
|
|
567 |
hiddenLevel ~~ 1 ifTrue:[^ self].
|
|
568 |
] ifFalse:[
|
|
569 |
hiddenLevel ~~ 0 ifTrue:[^ self].
|
|
570 |
].
|
|
571 |
testMode ifTrue:[ ^ self ]. "/ test whether running testMode
|
|
572 |
|
|
573 |
( aList size ~~ 0
|
|
574 |
and:[(rootView := listOfItems rootView) notNil
|
|
575 |
and:[rootView shown]]
|
|
576 |
) ifFalse:[
|
|
577 |
^ self
|
|
578 |
].
|
|
579 |
|
|
580 |
lockSema critical:[
|
|
581 |
damages := OrderedCollection new:(8 * aList size).
|
|
582 |
|
|
583 |
aList do:[:item|
|
|
584 |
item handlesDo:[:handle :what|
|
|
585 |
damages reverseDo:[:el|
|
|
586 |
(el intersects:handle) ifTrue:[
|
|
587 |
damages removeIdentical:el.
|
|
588 |
|
|
589 |
handle left:(handle left min:el left)
|
|
590 |
right:(handle right max:el right)
|
|
591 |
top:(handle top min:el top)
|
|
592 |
bottom:(handle bottom max:el bottom)
|
|
593 |
]
|
|
594 |
].
|
|
595 |
damages add:handle
|
|
596 |
]
|
|
597 |
].
|
2404
|
598 |
"/ rootView clippedByChildren:false.
|
2176
|
599 |
|
|
600 |
damages do:[:el|
|
|
601 |
x := el left.
|
|
602 |
y := el top.
|
|
603 |
w := el width.
|
|
604 |
h := el height.
|
|
605 |
|
|
606 |
rootView clearRectangleX:x y:y width:w height:h.
|
|
607 |
rootView exposeX:x y:y width:w height:h.
|
|
608 |
].
|
2404
|
609 |
"/ rootView clippedByChildren:true.
|
2176
|
610 |
|
|
611 |
(subViews := rootView subViews) notNil ifTrue:[
|
|
612 |
subViews reverseDo:[:v| self recursiveRepair:damages startIn:v relativeTo:rootView ].
|
|
613 |
].
|
|
614 |
].
|
|
615 |
! !
|
|
616 |
|
|
617 |
!ViewTreeModel methodsFor:'selection accessing'!
|
|
618 |
|
|
619 |
at:anIndex
|
|
620 |
"returns the selected item at an index or nil
|
|
621 |
"
|
|
622 |
selection notNil ifTrue:[
|
|
623 |
^ selection at:anIndex ifAbsent:nil
|
|
624 |
].
|
|
625 |
^ nil
|
|
626 |
!
|
|
627 |
|
|
628 |
at:anIndex ifAbsent:aBlock
|
|
629 |
"returns the selected item at an index or the result of the block
|
|
630 |
"
|
|
631 |
selection notNil ifTrue:[
|
|
632 |
^ selection at:anIndex ifAbsent:aBlock
|
|
633 |
].
|
|
634 |
^ aBlock value
|
|
635 |
!
|
|
636 |
|
|
637 |
first
|
|
638 |
"returns the first selected item or nil
|
|
639 |
"
|
|
640 |
^ self at:1
|
|
641 |
!
|
|
642 |
|
|
643 |
last
|
|
644 |
"returns the last selected item or nil
|
|
645 |
"
|
|
646 |
^ selection notNil ifTrue:[selection last] ifFalse:[nil]
|
|
647 |
!
|
|
648 |
|
|
649 |
selectedItem
|
|
650 |
"returns the single selected item or nil (size ~~ 1 nil is returned)
|
|
651 |
"
|
|
652 |
^ selection size == 1 ifTrue:[selection at:1] ifFalse:[nil]
|
|
653 |
!
|
|
654 |
|
|
655 |
selectedSuperItems
|
|
656 |
"returs the list of selected superItems; items selected
|
|
657 |
but not contained in another selected item.
|
|
658 |
"
|
|
659 |
^ selectedSuperItems
|
|
660 |
!
|
|
661 |
|
|
662 |
size
|
|
663 |
"returns the number of items selected
|
|
664 |
"
|
|
665 |
^ selection size
|
|
666 |
! !
|
|
667 |
|
|
668 |
!ViewTreeModel methodsFor:'selection adding & removing'!
|
|
669 |
|
|
670 |
add:item
|
|
671 |
"add an item to the current selection
|
|
672 |
"
|
|
673 |
|newSelect|
|
|
674 |
|
|
675 |
item isNil ifTrue:[^ item].
|
|
676 |
|
|
677 |
lockSema critical:[
|
|
678 |
selection isNil ifTrue:[
|
|
679 |
newSelect := Array with:item.
|
|
680 |
] ifFalse:[
|
|
681 |
(self includes:item) ifFalse:[
|
|
682 |
newSelect := selection copyWith:item
|
|
683 |
]
|
|
684 |
].
|
|
685 |
|
|
686 |
newSelect size ~~ selection size ifTrue:[
|
|
687 |
item makeVisible.
|
|
688 |
self value:newSelect
|
|
689 |
]
|
|
690 |
].
|
|
691 |
^ item
|
|
692 |
!
|
|
693 |
|
|
694 |
addAll:aCollectionOfItems
|
|
695 |
"add a collection of items to the current selection
|
|
696 |
"
|
|
697 |
|newSelect|
|
|
698 |
|
|
699 |
aCollectionOfItems size == 0 ifTrue:[ ^ aCollectionOfItems ].
|
|
700 |
|
|
701 |
lockSema critical:[
|
|
702 |
selection isNil ifTrue:[
|
|
703 |
newSelect := Array withAll:aCollectionOfItems.
|
|
704 |
] ifFalse:[
|
|
705 |
newSelect := OrderedCollection withAll:selection.
|
|
706 |
|
|
707 |
aCollectionOfItems do:[:el|
|
|
708 |
(selection includesIdentical:el) ifFalse:[newSelect add:el]
|
|
709 |
].
|
|
710 |
].
|
|
711 |
self value:newSelect.
|
|
712 |
].
|
|
713 |
^ aCollectionOfItems
|
|
714 |
!
|
|
715 |
|
|
716 |
deselect
|
|
717 |
"clear the selection
|
|
718 |
"
|
|
719 |
self value:nil.
|
|
720 |
!
|
|
721 |
|
|
722 |
remove:item
|
|
723 |
"remove the item from the current selection
|
|
724 |
"
|
|
725 |
|newSelect|
|
|
726 |
|
|
727 |
item isNil ifTrue:[^ nil].
|
|
728 |
|
|
729 |
lockSema critical:[
|
|
730 |
(selection notNil and:[selection includesIdentical:item]) ifTrue:[
|
|
731 |
selection size == 1 ifTrue:[ newSelect := nil ]
|
|
732 |
ifFalse:[ newSelect := selection copyWithout:item ].
|
|
733 |
|
|
734 |
self value:newSelect
|
|
735 |
].
|
|
736 |
].
|
|
737 |
^ item
|
|
738 |
!
|
|
739 |
|
|
740 |
removeAll
|
|
741 |
"clear the selection
|
|
742 |
"
|
|
743 |
self deselect.
|
|
744 |
!
|
|
745 |
|
|
746 |
removeAll:loItems
|
|
747 |
"remove all items of the collection from the current selection
|
|
748 |
"
|
|
749 |
|newSelect|
|
|
750 |
|
|
751 |
selection isNil ifTrue:[ ^ loItems ].
|
|
752 |
loItems size == 0 ifTrue:[ ^ loItems ].
|
|
753 |
|
|
754 |
lockSema critical:[
|
|
755 |
selection notNil ifTrue:[
|
|
756 |
newSelect := selection select:[:el| (loItems includesIdentical:el) not ].
|
|
757 |
self value:newSelect.
|
|
758 |
]
|
|
759 |
].
|
|
760 |
^ loItems
|
|
761 |
!
|
|
762 |
|
|
763 |
selectAll
|
|
764 |
"select all items
|
|
765 |
"
|
|
766 |
|root newSelection|
|
|
767 |
|
|
768 |
root := listOfItems root.
|
|
769 |
|
|
770 |
root isNil ifTrue:[
|
|
771 |
newSelection := nil
|
|
772 |
] ifFalse:[
|
|
773 |
newSelection := OrderedCollection new.
|
|
774 |
root recursiveDo:[:el| newSelection add:el ].
|
|
775 |
].
|
|
776 |
self value:newSelection.
|
|
777 |
!
|
|
778 |
|
|
779 |
selectItem:anItem
|
|
780 |
"set the current selection to the item
|
|
781 |
"
|
|
782 |
self value:anItem
|
|
783 |
!
|
|
784 |
|
|
785 |
selectRootItem
|
|
786 |
"set the current selection to the root item
|
|
787 |
"
|
|
788 |
self value:(self rootItem).
|
|
789 |
!
|
|
790 |
|
|
791 |
selectedItem:anItem
|
|
792 |
"set the current selection to the item
|
|
793 |
"
|
|
794 |
self selectItem:anItem.
|
|
795 |
!
|
|
796 |
|
|
797 |
toggleSelectItem:anItem
|
|
798 |
"toggle selection-state of the item; add or remove the item from the
|
|
799 |
current selection.
|
|
800 |
"
|
|
801 |
anItem notNil ifTrue:[
|
|
802 |
(self includes:anItem) ifTrue:[self remove:anItem]
|
|
803 |
ifFalse:[self add:anItem]
|
|
804 |
].
|
|
805 |
^ anItem
|
|
806 |
! !
|
|
807 |
|
|
808 |
!ViewTreeModel methodsFor:'selection enumerating'!
|
|
809 |
|
|
810 |
collect:aBlock
|
|
811 |
"for each element in the selection, evaluate the argument, aBlock
|
|
812 |
and return a new collection with the results
|
|
813 |
"
|
|
814 |
|res|
|
|
815 |
|
|
816 |
res := OrderedCollection new.
|
|
817 |
self do:[:el| res add:(aBlock value:el)].
|
|
818 |
^ res
|
|
819 |
!
|
|
820 |
|
|
821 |
do:aOneArgBlock
|
|
822 |
"evaluate the argument, aBlock for each item in the selection
|
|
823 |
"
|
|
824 |
|cashedSelection|
|
|
825 |
|
|
826 |
cashedSelection := selection.
|
|
827 |
cashedSelection isNil ifTrue:[^ nil].
|
|
828 |
^ cashedSelection do:aOneArgBlock
|
|
829 |
!
|
|
830 |
|
|
831 |
from:start do:aOneArgBlock
|
|
832 |
"evaluate the argument, aBlock for the items starting at index start
|
|
833 |
"
|
|
834 |
|cashedSelection|
|
|
835 |
|
|
836 |
cashedSelection := selection.
|
|
837 |
cashedSelection isNil ifTrue:[^ nil].
|
|
838 |
^ cashedSelection from:start do:aOneArgBlock
|
|
839 |
!
|
|
840 |
|
|
841 |
from:start to:stop do:aOneArgBlock
|
|
842 |
"evaluate the argument, aBlock for the items with index start to
|
|
843 |
stop in the selection.
|
|
844 |
"
|
|
845 |
|cashedSelection|
|
|
846 |
|
|
847 |
cashedSelection := selection.
|
|
848 |
cashedSelection isNil ifTrue:[^ nil].
|
|
849 |
^ cashedSelection from:start to:stop do:aOneArgBlock
|
|
850 |
!
|
|
851 |
|
|
852 |
reverseDo:aOneArgBlock
|
|
853 |
"evaluate the argument, aBlock for each item in the selection
|
|
854 |
"
|
|
855 |
|cashedSelection|
|
|
856 |
|
|
857 |
cashedSelection := selection.
|
|
858 |
cashedSelection isNil ifTrue:[^ nil].
|
|
859 |
^ cashedSelection reverseDo:aOneArgBlock
|
|
860 |
!
|
|
861 |
|
|
862 |
select:aBlock
|
|
863 |
"return a new collection with all elements from the selection, for which
|
|
864 |
the argument aBlock evaluates to true.
|
|
865 |
"
|
|
866 |
|res|
|
|
867 |
|
|
868 |
res := OrderedCollection new.
|
|
869 |
self do:[:el| (aBlock value:el) ifTrue:[res add:el] ].
|
|
870 |
^ res
|
|
871 |
! !
|
|
872 |
|
|
873 |
!ViewTreeModel methodsFor:'selection protocol'!
|
|
874 |
|
|
875 |
changed:aParameter with:oldSelection
|
|
876 |
"update the visibility staus of the current selection
|
|
877 |
"
|
|
878 |
|unselected rootView rootItem selSize|
|
|
879 |
|
|
880 |
selSize := selection size.
|
|
881 |
|
|
882 |
selSize == 0 ifTrue:[
|
|
883 |
selectedSuperItems := #().
|
|
884 |
] ifFalse:[
|
|
885 |
selSize == 1 ifTrue:[
|
|
886 |
selectedSuperItems := Array with:(selection at:1).
|
|
887 |
] ifFalse:[
|
|
888 |
rootItem := listOfItems root.
|
|
889 |
|
|
890 |
(selection includesIdentical:rootItem) ifTrue:[
|
|
891 |
selectedSuperItems := Array with:rootItem.
|
|
892 |
] ifFalse:[
|
|
893 |
selectedSuperItems := OrderedCollection new:selSize.
|
|
894 |
|
|
895 |
selection do:[:anItem|
|
|
896 |
anItem parentsDetect:[:el| selection includesIdentical:el ]
|
|
897 |
ifNone:[ selectedSuperItems add:anItem ].
|
|
898 |
].
|
|
899 |
]
|
|
900 |
]
|
|
901 |
].
|
|
902 |
|
|
903 |
( hiddenLevel == 0
|
|
904 |
and:[(rootView := listOfItems rootView) notNil
|
|
905 |
and:[rootView shown]]
|
|
906 |
) ifTrue:[
|
|
907 |
selSize == 0 ifTrue:[
|
|
908 |
"/ must redraw the old selection unselected
|
|
909 |
self redrawUnselected:oldSelection andLock:false
|
|
910 |
] ifFalse:[
|
|
911 |
self invalidateSelection.
|
|
912 |
|
|
913 |
oldSelection size ~~ 0 ifTrue:[
|
|
914 |
"/ must redraw all elements no longer in the selection
|
|
915 |
unselected := oldSelection select:[:el| (selection includesIdentical:el) not ].
|
|
916 |
self redrawUnselected:unselected andLock:false.
|
|
917 |
]
|
|
918 |
]
|
|
919 |
].
|
|
920 |
super changed:aParameter with:oldSelection.
|
|
921 |
!
|
|
922 |
|
|
923 |
setValue:aNewSelection
|
|
924 |
"set the selection without notifying
|
|
925 |
"
|
|
926 |
|newSelect idx|
|
|
927 |
|
|
928 |
newSelect := nil.
|
|
929 |
|
|
930 |
aNewSelection notNil ifTrue:[
|
|
931 |
lockSema critical:[
|
|
932 |
aNewSelection isCollection ifFalse:[
|
|
933 |
(selection size == 1 and:[selection first == aNewSelection]) ifTrue:[
|
|
934 |
newSelect := selection
|
|
935 |
] ifFalse:[
|
|
936 |
newSelect := Array with:aNewSelection.
|
|
937 |
]
|
|
938 |
] ifTrue:[
|
|
939 |
aNewSelection notEmpty ifTrue:[
|
|
940 |
aNewSelection size ~~ selection size ifTrue:[
|
|
941 |
newSelect := aNewSelection copy.
|
|
942 |
] ifFalse:[
|
|
943 |
idx := selection findFirst:[:el| (aNewSelection includesIdentical:el) not ].
|
|
944 |
|
|
945 |
idx ~~ 0 ifTrue:[newSelect := aNewSelection copy]
|
|
946 |
ifFalse:[newSelect := selection ].
|
|
947 |
]
|
|
948 |
]
|
|
949 |
]
|
|
950 |
].
|
|
951 |
].
|
|
952 |
newSelect ~~ selection ifTrue:[
|
|
953 |
beforeSelectionChangedAction value.
|
|
954 |
selection := newSelect.
|
|
955 |
selection notNil ifTrue:[selection do:[:el| el makeVisible]]
|
|
956 |
].
|
|
957 |
!
|
|
958 |
|
|
959 |
triggerValue:aValue
|
|
960 |
"set my value & send change notifications to my dependents.
|
|
961 |
Send the change message even if the value didn't change.
|
|
962 |
"
|
|
963 |
|oldSelection|
|
|
964 |
|
|
965 |
lockSema critical:[
|
|
966 |
oldSelection := selection.
|
|
967 |
self setValue:aValue.
|
|
968 |
self changed:#value with:oldSelection
|
|
969 |
]
|
|
970 |
!
|
|
971 |
|
|
972 |
value
|
|
973 |
"returns the current selection
|
|
974 |
"
|
|
975 |
^ selection ? #()
|
|
976 |
!
|
|
977 |
|
|
978 |
value:aValue
|
|
979 |
"change the current selection and send change notifications to my
|
|
980 |
dependents if it changed.
|
|
981 |
"
|
|
982 |
|oldSelection|
|
|
983 |
|
|
984 |
lockSema critical:[
|
|
985 |
oldSelection := selection.
|
|
986 |
self setValue:aValue.
|
|
987 |
|
|
988 |
oldSelection == selection ifFalse:[
|
|
989 |
self changed:#value with:oldSelection
|
|
990 |
]
|
|
991 |
].
|
|
992 |
! !
|
|
993 |
|
|
994 |
!ViewTreeModel methodsFor:'selection searching'!
|
|
995 |
|
|
996 |
detect:aBlock
|
|
997 |
"evaluate the argument, aBlock for each item in the selection until
|
|
998 |
the block returns true; in this case return the element which caused
|
|
999 |
the true evaluation.
|
|
1000 |
If none of the evaluations returns true, an error is raised
|
|
1001 |
"
|
|
1002 |
^ self detect:aBlock ifNone:[self errorNotFound]
|
|
1003 |
!
|
|
1004 |
|
|
1005 |
detect:aBlock ifNone:exceptionBlock
|
|
1006 |
"evaluate the argument, aBlock for each item in the selection until the
|
|
1007 |
block returns true; in this case return the element which caused the
|
|
1008 |
true evaluation.
|
|
1009 |
If none of the evaluations returns true, the result of the evaluation
|
|
1010 |
of the exceptionBlock is returned
|
|
1011 |
"
|
|
1012 |
|cashedSelection|
|
|
1013 |
|
|
1014 |
cashedSelection := selection.
|
|
1015 |
cashedSelection isNil ifTrue:[ ^ exceptionBlock value ].
|
|
1016 |
^ cashedSelection detect:aBlock ifNone:exceptionBlock
|
|
1017 |
!
|
|
1018 |
|
|
1019 |
detectLast:aBlock
|
|
1020 |
"evaluate the argument, aBlock for each item in the selection until
|
|
1021 |
the block returns true; in this case return the element which caused
|
|
1022 |
the true evaluation. The items are processed in reverse order.
|
|
1023 |
If none of the evaluations returns true, an error is raised
|
|
1024 |
"
|
|
1025 |
^ self detectLast:aBlock ifNone:[self errorNotFound]
|
|
1026 |
!
|
|
1027 |
|
|
1028 |
detectLast:aBlock ifNone:exceptionBlock
|
|
1029 |
"evaluate the argument, aBlock for each item in the selection until
|
|
1030 |
the block returns true; in this case return the element which caused
|
|
1031 |
the true evaluation. The items are processed in reverse order.
|
|
1032 |
If none of the evaluations returns true, the result of the evaluation
|
|
1033 |
of the exceptionBlock is returned
|
|
1034 |
"
|
|
1035 |
|cashedSelection|
|
|
1036 |
|
|
1037 |
cashedSelection := selection.
|
|
1038 |
cashedSelection isNil ifTrue:[ ^ exceptionBlock value ].
|
|
1039 |
^ cashedSelection detectLast:aBlock ifNone:exceptionBlock
|
|
1040 |
! !
|
|
1041 |
|
|
1042 |
!ViewTreeModel methodsFor:'selection testing'!
|
|
1043 |
|
|
1044 |
includes:anItem
|
|
1045 |
"returns true if the item is in the current selection
|
|
1046 |
"
|
|
1047 |
|cashedSelection|
|
|
1048 |
|
|
1049 |
cashedSelection := selection.
|
|
1050 |
cashedSelection isNil ifTrue:[^ false].
|
|
1051 |
^ cashedSelection includesIdentical:anItem
|
|
1052 |
!
|
|
1053 |
|
|
1054 |
includesAll:aCollection
|
|
1055 |
"return true, if all items of the collection are included in the current selection
|
|
1056 |
"
|
|
1057 |
|cashedSelection|
|
|
1058 |
|
|
1059 |
aCollection size ~~ 0 ifTrue:[
|
|
1060 |
cashedSelection := selection.
|
|
1061 |
cashedSelection isNil ifTrue:[ ^ false ].
|
|
1062 |
|
|
1063 |
aCollection do:[:el|
|
|
1064 |
(cashedSelection includesIdentical:el) ifFalse:[^ false]
|
|
1065 |
]
|
|
1066 |
].
|
|
1067 |
^ true
|
|
1068 |
!
|
|
1069 |
|
|
1070 |
includesAny:aCollection
|
|
1071 |
"return true, if the any item of the collection is in the current selection
|
|
1072 |
"
|
|
1073 |
|cashedSelection|
|
|
1074 |
|
|
1075 |
aCollection notNil ifTrue:[
|
|
1076 |
cashedSelection := selection.
|
|
1077 |
|
|
1078 |
cashedSelection notNil ifTrue:[
|
|
1079 |
aCollection do:[:el|
|
|
1080 |
(cashedSelection includesIdentical:el) ifTrue:[^ true]
|
|
1081 |
]
|
|
1082 |
]
|
|
1083 |
].
|
|
1084 |
^ false
|
|
1085 |
!
|
|
1086 |
|
|
1087 |
includesIdentical:anItem
|
|
1088 |
"returns true if the item is in the current selection
|
|
1089 |
"
|
|
1090 |
^ self includes:anItem
|
|
1091 |
!
|
|
1092 |
|
|
1093 |
isEmpty
|
|
1094 |
"returns true if the current selection is empty
|
|
1095 |
"
|
|
1096 |
^ selection size == 0
|
|
1097 |
!
|
|
1098 |
|
|
1099 |
isSelected:anItem
|
|
1100 |
"returns true if the item is in the current selection
|
|
1101 |
"
|
|
1102 |
^ self includes:anItem
|
|
1103 |
!
|
|
1104 |
|
|
1105 |
notEmpty
|
|
1106 |
"returns true if the current selection is not empty
|
|
1107 |
"
|
|
1108 |
^ selection size ~~ 0
|
|
1109 |
! !
|
|
1110 |
|
|
1111 |
!ViewTreeModel::ItemList class methodsFor:'documentation'!
|
|
1112 |
|
|
1113 |
documentation
|
|
1114 |
"
|
|
1115 |
Kind of HierarchicalList class which contains all the visible
|
|
1116 |
ViewTreeItem's and the root, the anchor of the hierarchical list.
|
|
1117 |
|
|
1118 |
[Instance variables:]
|
|
1119 |
treeModel <ViewTreeModel> all events are delegated to
|
|
1120 |
eventHook <BlockValue> save and resore the pre/post -EventHook
|
|
1121 |
|
|
1122 |
|
|
1123 |
[author:]
|
|
1124 |
Claus Atzkern
|
|
1125 |
|
|
1126 |
[see also:]
|
|
1127 |
HierarchicalList
|
|
1128 |
ViewTreeModel
|
|
1129 |
ViewTreeItem
|
|
1130 |
"
|
|
1131 |
! !
|
|
1132 |
|
|
1133 |
!ViewTreeModel::ItemList methodsFor:'accessing'!
|
|
1134 |
|
|
1135 |
root:theRoot
|
|
1136 |
"set the root item; delegate events to my treeModel
|
|
1137 |
"
|
|
1138 |
|rootView|
|
|
1139 |
|
|
1140 |
theRoot == root ifTrue:[^ self].
|
|
1141 |
|
|
1142 |
rootView := self rootView.
|
|
1143 |
super root:theRoot.
|
|
1144 |
|
|
1145 |
rootView notNil ifTrue:[ |wgrp|
|
|
1146 |
wgrp := rootView windowGroup.
|
|
1147 |
|
|
1148 |
wgrp notNil ifTrue:[
|
|
1149 |
wgrp removePreEventHook:treeModel.
|
|
1150 |
wgrp removePostEventHook:self.
|
|
1151 |
].
|
|
1152 |
].
|
|
1153 |
|
|
1154 |
super root:theRoot.
|
|
1155 |
rootView := self rootView.
|
|
1156 |
|
|
1157 |
rootView notNil ifTrue:[
|
|
1158 |
"must setup a task because there might not exist a windowGroup at the moment
|
|
1159 |
"
|
|
1160 |
[ |wgrp|
|
|
1161 |
|
|
1162 |
[rootView == self rootView] whileTrue:[
|
|
1163 |
wgrp := rootView windowGroup.
|
|
1164 |
wgrp notNil ifTrue:[
|
|
1165 |
rootView := nil.
|
|
1166 |
wgrp addPreEventHook:treeModel.
|
|
1167 |
wgrp addPostEventHook:self.
|
|
1168 |
] ifFalse:[
|
|
1169 |
Delay waitForMilliseconds:100.
|
|
1170 |
].
|
|
1171 |
].
|
|
1172 |
|
|
1173 |
] forkAt:(Processor userSchedulingPriority + 2).
|
|
1174 |
].
|
|
1175 |
^ root.
|
|
1176 |
!
|
|
1177 |
|
|
1178 |
rootView
|
|
1179 |
"returns the widget assigned to the root or nil
|
|
1180 |
"
|
|
1181 |
^ root notNil ifTrue:[root widget] ifFalse:[nil]
|
|
1182 |
!
|
|
1183 |
|
|
1184 |
treeModel
|
|
1185 |
"returne the treeModel, a ViewTreeModel
|
|
1186 |
"
|
|
1187 |
^ treeModel
|
|
1188 |
! !
|
|
1189 |
|
|
1190 |
!ViewTreeModel::ItemList methodsFor:'event processing'!
|
|
1191 |
|
|
1192 |
processEvent:anEvent
|
|
1193 |
"post process event
|
|
1194 |
"
|
|
1195 |
^ treeModel testMode not
|
|
1196 |
! !
|
|
1197 |
|
|
1198 |
!ViewTreeModel::ItemList methodsFor:'instance creation'!
|
|
1199 |
|
|
1200 |
on:aModel
|
|
1201 |
"set the model, a ViewTreeModel
|
|
1202 |
"
|
|
1203 |
treeModel := aModel.
|
|
1204 |
showRoot := true.
|
|
1205 |
! !
|
|
1206 |
|
|
1207 |
!ViewTreeModel::ItemList methodsFor:'searching'!
|
|
1208 |
|
|
1209 |
detectItemRespondsToView:aView
|
|
1210 |
"returns the bottom-most item which contains the view
|
|
1211 |
"
|
|
1212 |
|view item topView|
|
|
1213 |
|
|
1214 |
root notNil ifTrue:[
|
|
1215 |
view := aView.
|
|
1216 |
topView := root widget.
|
|
1217 |
|
|
1218 |
[ view notNil ] whileTrue:[
|
|
1219 |
topView == view ifTrue:[^ root].
|
|
1220 |
item := root recursiveDetect:[:el| el widget == view ].
|
|
1221 |
item notNil ifTrue:[^ item].
|
|
1222 |
view := view superView
|
|
1223 |
]
|
|
1224 |
].
|
|
1225 |
^ nil
|
|
1226 |
!
|
|
1227 |
|
|
1228 |
recursiveDetect:aOneOrgBlock
|
|
1229 |
"recursive find the first child, for which evaluation
|
|
1230 |
of the block returns true; if none nil is returned
|
|
1231 |
"
|
|
1232 |
root notNil ifTrue:[
|
|
1233 |
(aOneOrgBlock value:root) ifTrue:[ ^ root ].
|
|
1234 |
^ root recursiveDetect:aOneOrgBlock
|
|
1235 |
].
|
|
1236 |
^ nil
|
|
1237 |
! !
|
|
1238 |
|
|
1239 |
!ViewTreeModel class methodsFor:'documentation'!
|
|
1240 |
|
|
1241 |
version
|
|
1242 |
^ '$Header$'
|
|
1243 |
! !
|