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487
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"
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488
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COPYRIGHT (c) 1997 by eXept Software AG
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487
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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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SelectionInTreeView subclass:#FileSelectionTree
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instanceVariableNames:'fileIcons itemClass'
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classVariableNames:''
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poolDictionaries:''
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category:'Views-Text'
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!
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!FileSelectionTree class methodsFor:'documentation'!
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copyright
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"
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488
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COPYRIGHT (c) 1997 by eXept Software AG
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487
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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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somewhat like a FileSelectionInList; but specialized for hierarchical (i.e. tree-like)
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lists and adds the functions to show/hide subtrees.
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Requires SelectionInTree as model and FileSelectionItem (or compatible) list entries.
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You can define your own TreeItem instead of useing the default class FileSelectionItem
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by seting the class through to #itemClass:
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[see also:]
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FileSelectionItem
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SelectionInTree
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SelectionInTreeView
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SelectionInListView
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[author:]
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Claus Atzkern
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"
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!
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examples
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"
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open a FileSelectionTree on current directory
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[exBegin]
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|top scr|
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top := StandardSystemView new label:'select'; extent:300@500.
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scr := HVScrollableView for:FileSelectionTree origin:(0.0 @ 0.0) corner:(1.0 @ 1.0) in:top.
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scr := scr scrolledView.
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scr directory:Filename currentDirectory.
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scr action:[:anIndex| Transcript showCR:anIndex.
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Transcript showCR:scr selectedPathname.
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].
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top open
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[exEnd]
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open a FileSelectionTree on root path; show directory
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indication (open/closed) and no lines
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[exBegin]
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|top scr|
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top := StandardSystemView new label:'select'; extent:300@500.
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scr := HVScrollableView for:FileSelectionTree origin:(0.0 @ 0.0) corner:(1.0 @ 1.0) in:top.
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scr := scr scrolledView.
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scr showDirectoryIndicator:true.
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scr showLines:false.
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scr directory:'/'.
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scr action:[:anIndex| Transcript showCR:anIndex.
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Transcript showCR:scr selectedPathname.
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].
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top open
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[exEnd]
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open a FileSelectionTree on root path; showing only files
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[exBegin]
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|top scr|
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top := StandardSystemView new label:'select'; extent:300@500.
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scr := HVScrollableView for:FileSelectionTree origin:(0.0 @ 0.0) corner:(1.0 @ 1.0) in:top.
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scr := scr scrolledView.
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scr itemClass:(FileSelectionItem directoriesOnly).
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scr directory:'/'.
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scr action:[:anIndex| Transcript showCR:anIndex.
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Transcript showCR:scr selectedPathname.
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].
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top open
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[exEnd]
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open a FileSelectionTree on a specified path
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[exBegin]
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|top scr|
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top := StandardSystemView new label:'select'; extent:300@500.
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scr := HVScrollableView for:FileSelectionTree origin:(0.0 @ 0.0) corner:(1.0 @ 1.0) in:top.
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scr := scr scrolledView.
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scr directory:'/'.
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scr showLines:false.
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scr action:[:anIndex| Transcript showCR:scr selectedPathname ].
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scr doubleClickAction:[:anIndex| Transcript showCR:scr selectedPathname ].
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top open
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[exEnd]
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open a FileSelectionTree on a specified path; show or hide
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lines on doubleClick on a file (not a directory)
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[exBegin]
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|top scr|
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top := StandardSystemView new label:'select'; extent:300@500.
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scr := HVScrollableView for:FileSelectionTree origin:(0.0 @ 0.0) corner:(1.0 @ 1.0) in:top.
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scr := scr scrolledView.
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scr directory:'/'.
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scr action:[:anIndex| Transcript showCR:anIndex.
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Transcript showCR:scr selectedPathname.
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].
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scr doubleClickAction:[:anIndex|
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|fn|
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fn := scr selectedPathname asFilename.
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fn isDirectory ifFalse:[
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scr showLines:(scr showLines not)
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]
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].
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top open
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[exEnd]
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492
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example associated with a FileSelectionList
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[exBegin]
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|top tree list field label|
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top := StandardSystemView new label:'select'; extent:600@600.
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tree := HVScrollableView for:FileSelectionTree origin:(0.0 @ 0.0) corner:(0.5 @ 1.0) in:top.
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list := HVScrollableView for:FileSelectionList origin:(0.5 @ 25) corner:(1.0 @ 1.0) in:top.
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label := Label origin:(0.5 @ 2) in:top.
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label label:'pattern:'.
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field := EditField origin:0.5@2 in:top.
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field leftInset:(label preferredExtent x) + 5.
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field width:1.0.
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field editValue:'*'.
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field crAction:[list pattern:field editValue].
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tree := tree scrolledView.
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list := list scrolledView.
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list ignoreDirectories:true.
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list pattern:(field editValue).
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tree itemClass:(FileSelectionItem directoriesOnly).
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tree directory:(Filename homeDirectory).
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tree showDirectoryIndicator:true.
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list directory:(tree directory).
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list action:[:index| Transcript showCR:'you selected: ' , list selectedPathname].
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tree action:[:anIndex|
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list directory:(tree selectedPathname).
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].
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top open
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[exEnd]
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487
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a more complex example
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[exBegin]
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|action top tree slvw file tgD tgF button hzPn|
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top := StandardSystemView new label:'select'; extent:600@600.
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tree := HVScrollableView for:FileSelectionTree origin:(0.0 @ 0.0) corner:(0.5 @ 1.0) in:top.
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slvw := HVScrollableView for:FileSelectionTree origin:(0.5 @ 30) corner:(1.0 @ 1.0) in:top.
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hzPn := HorizontalPanelView origin:(0.5 @ 0.0) corner:(1.0 @ 30) in:top.
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tree := tree scrolledView.
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slvw := slvw scrolledView.
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tree itemClass:(FileSelectionItem directoriesOnly).
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tree directory:(Filename homeDirectory).
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slvw doubleClickSelectionBlock:[:anIndex|
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(file := slvw selectedPathname asFilename) isDirectory ifTrue:[
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anIndex == 1 ifTrue:[file := file directory].
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tree selectPathname:file
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].
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false
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].
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slvw showLines:false.
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tree action:[:anIndex|
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slvw directory:(tree selectedPathname)
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].
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action := [:tg||cls|
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tgF isOn ifTrue:[
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tgD isOn ifTrue:[cls := FileSelectionItem]
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ifFalse:[cls := FileSelectionItem filesOnly]
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] ifFalse:[
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tgD isOn ifTrue:[
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cls := FileSelectionItem directoriesOnly
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] ifFalse:[
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tg turnOn.
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tg == tgD ifTrue:[cls := FileSelectionItem directoriesOnly]
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ifFalse:[cls := FileSelectionItem filesOnly]
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]
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].
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slvw itemClass:cls.
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].
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hzPn verticalLayout:#fitSpace.
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hzPn horizontalLayout:#fitSpace.
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tgD := CheckBox label:'directory' in:hzPn.
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tgF := CheckBox label:'file' in:hzPn.
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button := Button label:'File Browser' in:hzPn.
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button action:[
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(file := slvw selectedPathname) isNil ifTrue:[
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file := tree selectedPathname
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].
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file notNil ifTrue:[
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file asFilename isDirectory ifTrue:[FileBrowser openOn:file]
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ifFalse:[FileBrowser openOnFileNamed:file]
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]
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].
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tgD turnOn.
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tgF turnOn.
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tgD action:[:v| action value:tgF].
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tgF action:[:v| action value:tgD].
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top open
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[exEnd]
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"
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! !
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!FileSelectionTree methodsFor:'accessing'!
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directory
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"get the full pathname of the root directory
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"
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|root|
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(root := model root) notNil ifTrue:[
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^ root pathName
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].
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^ nil
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!
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directory:aPathname
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"change the root directory of the selection tree to the full pathName,
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aPathname. The pathname must be a directory otherwise the root directory
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is set to nil.
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"
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|root dir path keep|
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(aPathname notNil and:[(path := aPathname asFilename) isDirectory]) ifFalse:[
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model root:nil.
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^ self selection:nil
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].
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492
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(dir := self directory) notNil ifTrue:[
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dir := dir asFilename.
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keep := path pathName = dir directory pathName.
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] ifFalse:[
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keep := false
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].
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self selection:nil.
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root := self itemClass pathName:path.
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model root:root keepRoot:keep.
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model expand:root.
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keep ifTrue:[
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self selectPathname:(dir pathName)
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].
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!
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itemClass
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"returns current itemClass used
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"
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^ itemClass
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!
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itemClass:anItemClass
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"set itemClass to be used
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"
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|directory|
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(anItemClass notNil and:[anItemClass ~~ itemClass]) ifTrue:[
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itemClass := anItemClass.
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self refetchDeviceResources.
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(directory := self directory) notNil ifTrue:[
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self directory:directory
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].
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].
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327 |
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492
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!
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329 |
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pathnameAtIndex:anIndex
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"returns pathname at an index or nil
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"
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|node|
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(node := self nodeAtIndex:anIndex) notNil ifTrue:[
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^ node pathName
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].
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^ nil
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487
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339 |
! !
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340 |
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341 |
!FileSelectionTree methodsFor:'drawing basics'!
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figureFor:aNode
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"get the image used for the node entry.
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"
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|keyOrImage|
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aNode == self selectedNode ifFalse:[keyOrImage := aNode imageUnselected]
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ifTrue:[keyOrImage := aNode imageSelected].
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keyOrImage isSymbol ifTrue:[^ fileIcons at:keyOrImage].
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^ keyOrImage
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! !
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354 |
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355 |
!FileSelectionTree methodsFor:'initialization'!
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356 |
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fetchImageResources
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358 |
"initialize heavily used device resources - to avoid rendering
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images again and again later; returns maximum extent of the images used.
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360 |
"
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361 |
|y x t|
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362 |
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fileIcons := self itemClass iconsOn:device.
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364 |
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365 |
t := super fetchImageResources.
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366 |
y := t y.
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367 |
x := t x.
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368 |
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|
369 |
fileIcons do:[:anIcon|
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370 |
(t := anIcon heightOn:self) > y ifTrue:[y := t].
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371 |
(t := anIcon widthOn:self) > x ifTrue:[x := t].
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372 |
].
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373 |
^ x @ y
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374 |
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375 |
!
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376 |
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377 |
initialize
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|
378 |
"setup my model and set the default path to the current directory; on default
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379 |
multiple selection is disabled.
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380 |
"
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381 |
super initialize.
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|
382 |
itemClass := FileSelectionItem.
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|
383 |
self model:(SelectionInTree new).
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|
384 |
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|
385 |
! !
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386 |
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387 |
!FileSelectionTree methodsFor:'selection'!
|
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|
388 |
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389 |
selectPathname:aPath
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|
390 |
"set selection to a path
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391 |
"
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392 |
|node comp rdwNd path|
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393 |
|
|
492
|
394 |
(aPath notNil and:[aPath asFilename exists]) ifFalse:[
|
|
487
|
395 |
^ self selection:nil
|
|
|
396 |
].
|
|
|
397 |
((path := aPath asString) = self selectedPathname) ifTrue:[
|
|
|
398 |
"/ already selected
|
|
|
399 |
^ self
|
|
|
400 |
].
|
|
|
401 |
|
|
|
402 |
comp := Filename components:(path copyFrom:(self directory size + 1)).
|
|
|
403 |
node := model root.
|
|
|
404 |
|
|
|
405 |
comp do:[:el||next|
|
|
|
406 |
next := node detectChild:[:e|e name = el].
|
|
|
407 |
|
|
|
408 |
next notNil ifTrue:[
|
|
|
409 |
node hidden ifTrue:[
|
|
|
410 |
rdwNd isNil ifTrue:[
|
|
|
411 |
rdwNd := node.
|
|
|
412 |
self selectNode:node.
|
|
|
413 |
].
|
|
|
414 |
node expand
|
|
|
415 |
].
|
|
|
416 |
node := next
|
|
|
417 |
]
|
|
|
418 |
].
|
|
|
419 |
|
|
|
420 |
rdwNd notNil ifTrue:[
|
|
|
421 |
model updateList.
|
|
|
422 |
list := self listFromModel.
|
|
|
423 |
self redrawFromLine:(self indexOfNode:rdwNd).
|
|
|
424 |
self contentsChanged.
|
|
|
425 |
].
|
|
|
426 |
self selectNode:node.
|
|
|
427 |
!
|
|
|
428 |
|
|
|
429 |
selectedPathname
|
|
|
430 |
"if there is a single selection, the full pathname of the selected
|
|
|
431 |
entry will be returned otherwise nil
|
|
|
432 |
"
|
|
|
433 |
|node|
|
|
|
434 |
|
|
|
435 |
(node := self selectedNode) notNil ifTrue:[
|
|
|
436 |
^ node pathName
|
|
|
437 |
].
|
|
|
438 |
^ nil
|
|
|
439 |
|
|
|
440 |
! !
|
|
|
441 |
|
|
|
442 |
!FileSelectionTree class methodsFor:'documentation'!
|
|
|
443 |
|
|
|
444 |
version
|
|
492
|
445 |
^ '$Header: /cvs/stx/stx/libwidg2/FileSelectionTree.st,v 1.3 1997-08-11 11:02:30 ca Exp $'
|
|
487
|
446 |
! !
|