| author | Claus Gittinger <cg@exept.de> |
| Fri, 09 Feb 1996 02:42:03 +0100 | |
| changeset 125 | db1c1a8e0384 |
| parent 86 | 4d7dbb5f1719 |
| child 252 | 4db843d36c46 |
| permissions | -rw-r--r-- |
| 84 | 1 |
" |
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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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! |
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!SelectionInHierarchy class methodsFor:'documentation'! |
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copyright |
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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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version |
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86
4d7dbb5f1719
uff - version methods changed to return stings
Claus Gittinger <cg@exept.de>
parents:
84
diff
changeset
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^ '$Header: /cvs/stx/stx/libwidg2/SelectionInHierarchy.st,v 1.2 1995-11-11 16:29:20 cg Exp $' |
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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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" |
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! ! |
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!SelectionInHierarchy methodsFor:'accessing'! |
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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: 10.10.94 / 16:13:36 / W.Olberding"! |
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getHierarchyNodeForContents: something |
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"return the hierarchyNode wich 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: 10.10.94 / 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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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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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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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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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: 10.10.94 / 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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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: 10.10.94 / 16:13:36 / 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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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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!SelectionInHierarchy methodsFor:'selection'! |
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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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^selection |
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"Modified: 10.10.94 / 16:13:36 / W.Olberding"! |
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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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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: 10.10.94 / 16:13:36 / W.Olberding"! |
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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 selection: anIndex. |
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self hideShow. |
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"Modified: 10.10.94 / 16:13:36 / 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:'hierarchy manipulation'! |
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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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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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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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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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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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!SelectionInHierarchy methodsFor:'testing & debugging'! |
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root |
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^root |
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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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