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"
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COPYRIGHT (c) 1994 by AEG Industry Automation
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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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Model subclass:#SelectionInHierarchy
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instanceVariableNames:'root list selection'
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classVariableNames:''
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poolDictionaries:''
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category:'Interface-Support-Models'
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84
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!
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!SelectionInHierarchy class methodsFor:'documentation'!
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84
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copyright
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84
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"
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COPYRIGHT (c) 1994 by AEG Industry Automation
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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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documentation
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"
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model for a selection in a hierarchical list.
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See examples in SelectionInHierarchyView.
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[Author:]
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W. Olberding AEG Factory Automation
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[See also:]
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HierarchyNode
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SelectionInHierarchyView
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"
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! !
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!SelectionInHierarchy methodsFor:'accessing'!
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add:aHierarchyNode below:existingHierarchyNode
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"Add a new HierarchyNode to the tree."
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existingHierarchyNode addChild: aHierarchyNode.
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self setNewList.
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"Modified: 10.10.1994 / 16:13:36 / W.Olberding"
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"Modified: 15.4.1997 / 16:27:28 / cg"
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!
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add: aHierarchyNode belowIndex: anIndex
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"Add a new HierarchyNode to the tree below the node
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which is found in the list at anIndex."
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| existingHierarchyNode |
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existingHierarchyNode := list at: anIndex ifAbsent: [^nil].
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self add: aHierarchyNode below: existingHierarchyNode
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"Modified: 10.10.1994 / 16:13:36 / W.Olberding"
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"Modified: 15.4.1997 / 16:27:50 / cg"
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!
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getHierarchyNodeForContents: something
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"return the hierarchyNode whose contents is something"
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|allNodes|
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allNodes:= root allChildren.
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allNodes do: [:each|
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(each contents = something) ifTrue:[^each].
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].
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^ nil
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"Modified: 10.10.1994 / 16:13:36 / W.Olberding"
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"Modified: 15.4.1997 / 16:29:15 / cg"
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!
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list
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"Answer a collection of nodes representing the
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list of currently viewed objects."
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^list
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"Modified: 10.10.1994 / 16:13:36 / W.Olberding"
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"Modified: 15.4.1997 / 16:29:26 / cg"
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!
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remove: aHierarchyNode
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"Remove aHierarchyNode and all its children. "
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aHierarchyNode removeYourself.
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self setNewList.
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^aHierarchyNode
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"Modified: 10.10.94 / 16:13:36 / W.Olberding"!
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removeBelow: existingHierarchyNode
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"Remove all children below an existingHierarchyNode ."
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existingHierarchyNode removeAllChildren.
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self setNewList.
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"Modified: 10.10.94 / 16:13:36 / W.Olberding"!
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removeBelowIndex: anIndex
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"Remove all the children of aHierarchyNode
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which is found in the list at anIndex."
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| existingHierarchyNode |
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existingHierarchyNode := list at: anIndex ifAbsent: [^nil].
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^self removeBelow: existingHierarchyNode.
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"Modified: 10.10.94 / 16:13:37 / W.Olberding"!
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removeIndex: anIndex
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"Remove the HierarchyNode and all its children
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which is found in the list at anIndex."
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| existingHierarchyNode |
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existingHierarchyNode := list at: anIndex ifAbsent: [^nil].
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^self remove: existingHierarchyNode.
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"Modified: 10.10.94 / 16:13:36 / W.Olberding"!
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root: aHierarchyNode
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"Set the root object - this means initialization."
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root := aHierarchyNode.
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self initialize.
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"Modified: 10.10.94 / 16:13:36 / W.Olberding"!
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selectedPath
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"Answer the pathName to the currently selected node."
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| selectedNode |
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selection isNil ifTrue: [^String new].
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selectedNode := list at: selection ifAbsent: [^String new].
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^selectedNode pathName.
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"Modified: 10.10.94 / 16:13:36 / W.Olberding"!
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setHideToChildren: aBoolean startingAt: aHierarchyNode
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"set the hide-Falg to aBoolean starting at aHierarchyNode down"
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|allNodes|
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allNodes:= root allChildren.
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allNodes do: [:each|
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each hide: aBoolean
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].
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self setNewList.
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"Modified: 10.10.94 / 16:13:36 / W.Olberding"!
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showCompleteHierarchyStartingAtNode: aHierarchyNode
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"Set the hide-Flag to false for the hierarchy starting at aHierarchyNode"
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aHierarchyNode isNil ifTrue: [^self].
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aHierarchyNode hideToFalseForPath.
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self setNewList.
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"Modified: 10.10.94 / 16:13:36 / W.Olberding"! !
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!SelectionInHierarchy methodsFor:'accessing sequencable'!
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addChildAndSubChildren:aHierarchyNode below:existingHierarchyNode after:aChild
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"Add a new HierarchyNode to the tree."
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existingHierarchyNode addChildAndSubChildren:aHierarchyNode after:aChild.
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self setNewList.
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!
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addChildAndSubChildren:aHierarchyNode below:existingHierarchyNode at:anIndex
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existingHierarchyNode addChildAndSubChildren:aHierarchyNode at:anIndex.
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self setNewList.
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! !
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!SelectionInHierarchy methodsFor:'hierarchy manipulation'!
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collapse
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"If possible, collapse the tree at the currently selected node.
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The tree structure can be restored again with #expand. "
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| selectedNode |
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selectedNode := list at: selection.
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selectedNode isCollapsable ifTrue: [ selectedNode collapse.
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^self setNewList. ].
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"Modified: 10.10.94 / 16:13:37 / W.Olberding"!
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collapseAll
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"If possible, collapse the tree at the currently selected node.
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A latter #expand will show the next hierarchy level"
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| selectedNode |
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selectedNode := list at: selection.
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selectedNode isCollapsable ifTrue: [ selectedNode collapseAll.
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^self setNewList. ].
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"Modified: 10.10.94 / 16:13:37 / W.Olberding"!
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expand
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"If possible, expand the tree
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at the currently selected node."
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| selectedNode |
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selectedNode := list at: selection.
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selectedNode isExpandable ifTrue: [ selectedNode expand.
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^self setNewList. ].
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"Modified: 10.10.94 / 16:13:37 / W.Olberding"!
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expandAll
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"If possible, expand the tree compleately to all leaves
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at the currently selected node."
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| selectedNode |
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selectedNode := list at: selection.
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selectedNode expandAll.
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^self setNewList.
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"Modified: 10.10.94 / 16:13:37 / W.Olberding"!
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hideShow
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"If possible, expand or collaps the tree
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at the currently selected node."
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| selectedNode |
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selectedNode := list at: selection.
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selectedNode isExpandable ifTrue: [ selectedNode expand.
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^self setNewList. ].
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selectedNode isCollapsable ifTrue: [ selectedNode collapse.
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^self setNewList. ].
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"Modified: 10.10.94 / 16:13:37 / W.Olberding"! !
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!SelectionInHierarchy methodsFor:'initialization'!
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initialize
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" nodes := Set new. ***"
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selection := nil.
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self setNewList.
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"Modified: 10.10.94 / 16:13:37 / W.Olberding"! !
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!SelectionInHierarchy methodsFor:'private'!
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setNewList
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"Travers the tree and build a new list."
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list := root withAllShownChildren.
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self changed: #list.
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"Modified: 10.10.94 / 16:13:37 / W.Olberding"! !
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!SelectionInHierarchy methodsFor:'selection'!
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doubleClickSelection: anIndex
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"Set the current selected object to be the element
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at anIndex of the selection list.
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Also expand or collapse the tree at that point."
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self selectionIndex: anIndex.
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self hideShow.
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"Modified: 10.10.1994 / 16:13:36 / W.Olberding"
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"Modified: 11.10.1996 / 15:19:35 / cg"
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!
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selection
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"Answer the current selection as
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anIndex of the selection list."
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^ self selectionIndex
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"Modified: 10.10.1994 / 16:13:36 / W.Olberding"
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"Modified: 11.10.1996 / 15:21:30 / cg"
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!
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selection: anIndex
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"Set the current selected object to be the element
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at anIndex of the selection list."
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^ self selectionIndex:anIndex
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"Modified: 11.10.1996 / 15:21:15 / cg"
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!
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selectionIndex
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"Answer the current selection as
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anIndex of the selection list."
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^ selection
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"Modified: 10.10.1994 / 16:13:36 / W.Olberding"
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"Created: 11.10.1996 / 15:18:44 / cg"
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"Modified: 11.10.1996 / 15:20:46 / cg"
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!
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selectionIndex: anIndex
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"Set the current selected object to be the element
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at anIndex of the selection list."
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anIndex isNil
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ifTrue: [ selection := 0]
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ifFalse: [
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(selection = anIndex)
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ifTrue: [^nil]
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ifFalse: [selection := anIndex ].
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].
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self changed: #selection.
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"Modified: 10.10.1994 / 16:13:36 / W.Olberding"
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"Created: 11.10.1996 / 15:16:30 / cg"
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! !
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!SelectionInHierarchy methodsFor:'testing & debugging'!
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254
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root
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252
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254
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^root
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252
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254
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"Modified: 10.10.94 / 16:13:37 / W.Olberding"! !
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252
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360
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!SelectionInHierarchy class methodsFor:'documentation'!
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252
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version
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442
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^ '$Header: /cvs/stx/stx/libwidg2/SelectionInHierarchy.st,v 1.8 1997-07-03 07:17:38 ca Exp $'
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! !
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