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"
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COPYRIGHT (c) 1993 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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SelectionInListView subclass:#FileSelectionList
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instanceVariableNames:'pattern directory timeStamp directoryId
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directoryContents directoryFileTypes
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fileTypes realAction matchBlock'
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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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FileSelectionList comment:'
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COPYRIGHT (c) 1993 by Claus Gittinger
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All Rights Reserved
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$Header: /cvs/stx/stx/libwidg/FileSelectionList.st,v 1.9 1994-11-17 14:34:10 claus Exp $
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'!
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!FileSelectionList class methodsFor:'documentation'!
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copyright
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"
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COPYRIGHT (c) 1993 by Claus Gittinger
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62
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All Rights Reserved
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38
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This software is furnished under a license and may be used
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only in accordance with the terms of that license and with the
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inclusion of the above copyright notice. This software may not
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be provided or otherwise made available to, or used by, any
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other person. No title to or ownership of the software is
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hereby transferred.
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"
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!
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version
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"
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$Header: /cvs/stx/stx/libwidg/FileSelectionList.st,v 1.9 1994-11-17 14:34:10 claus Exp $
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"
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!
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documentation
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"
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this class implements file selection lists - its basically a
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selection in list, but adds some right-arrows to directories.
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(and will soon remember the previous position when changing directories).
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You can specify an optional filename-pattern (such as '*.st') and an
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optional matchBlock (such as: [:name | name startsWith:'A']).
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Only files (plus directories) matching the pattern (if present) and
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for which the matchBlock returns true (if present), are shown.
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Instance variables:
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pattern the matchpattern
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directory the current directory
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timeStamp the time, when directoryContents was last taken
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directoryId the directories id (inode-nr) when it was taken
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directoryContents (cached) contents of current directory
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directoryFileTypes (cached) file types (symbols) of current directory
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fileTypes file types as shown in list (i.e only matching ones)
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matchBlock if non-nil: block evaluated per full filename;
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only files for which matchBlock returns true are shown.
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realAction (internal) the action to perform when a file is selected
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"
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!
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examples
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"
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Example use:
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FileSelectionLists are typically used in FileSelectionBoxes,
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or file-browser-like applications.
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Thus, the following examples are a bit untypical.
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example1 (plain file-list):
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|list|
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list := FileSelectionList new.
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list open
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example2 (scrolled & some action):
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|top v list|
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top := StandardSystemView new.
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top extent:(300 @ 200).
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v := ScrollableView for:FileSelectionList in:top.
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v origin:(0.0 @ 0.0) corner:(1.0 @ 1.0).
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list := v scrolledView.
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list action:[:index | Transcript showCr:'you selected: ' , list selectionValue].
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top open
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example3 (adds a pattern):
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|top v list|
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top := StandardSystemView new.
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top extent:(300 @ 200).
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v := ScrollableView for:FileSelectionList in:top.
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v origin:(0.0 @ 0.0) corner:(1.0 @ 1.0).
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list := v scrolledView.
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list pattern:'*.st'.
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list action:[:index | Transcript showCr:'you selected: ' , list selectionValue].
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top open
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example4 (a more complicated pattern):
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|top v list|
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top := StandardSystemView new.
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top extent:(300 @ 200).
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v := ScrollableView for:FileSelectionList in:top.
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v origin:(0.0 @ 0.0) corner:(1.0 @ 1.0).
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list := v scrolledView.
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list pattern:'[A-D]*.st'.
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list action:[:index | Transcript showCr:'you selected: ' , list selectionValue].
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top open
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example5 (adds a matchblock to show only writable files):
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|top v list|
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top := StandardSystemView new.
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top extent:(300 @ 200).
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v := ScrollableView for:FileSelectionList in:top.
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v origin:(0.0 @ 0.0) corner:(1.0 @ 1.0).
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list := v scrolledView.
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list matchBlock:[:name |
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|fileName|
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fileName := name asFilename.
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fileName isWritable or:[fileName isDirectory]
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].
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list action:[:index | Transcript showCr:'you selected: ' , list selectionValue].
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top open
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example6 (adds a matchblock to suppress directories):
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|top v list|
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top := StandardSystemView new.
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top extent:(300 @ 200).
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v := ScrollableView for:FileSelectionList in:top.
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v origin:(0.0 @ 0.0) corner:(1.0 @ 1.0).
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list := v scrolledView.
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list matchBlock:[:name |
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name asFilename isDirectory not
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].
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list action:[:index | Transcript showCr:'you selected: ' , list selectionValue].
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top open
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example7 (adds a matchblock to block moving up (i.e. only allow files here & below):
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|top v list currentDir|
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currentDir := '.' asFilename pathName.
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top := StandardSystemView new.
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top extent:(300 @ 200).
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v := ScrollableView for:FileSelectionList in:top.
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v origin:(0.0 @ 0.0) corner:(1.0 @ 1.0).
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list := v scrolledView.
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list matchBlock:[:name |
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((name endsWith:'/..') and:[list directory pathName = currentDir]) not
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].
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list action:[:index | Transcript showCr:'you selected: ' , list selectionValue].
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top open
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example8 (block moving up AND show all .rc-files only):
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|top v list currentDir|
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currentDir := '.' asFilename pathName.
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top := StandardSystemView new.
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top extent:(300 @ 200).
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v := ScrollableView for:FileSelectionList in:top.
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v origin:(0.0 @ 0.0) corner:(1.0 @ 1.0).
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list := v scrolledView.
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list pattern:'*.rc'.
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list matchBlock:[:name |
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((name endsWith:'/..') and:[list directory pathName = currentDir]) not
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].
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list action:[:index | Transcript showCr:'you selected: ' , list selectionValue].
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top open
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example9 (show only .rc-files in current directory):
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|top v list currentDir|
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currentDir := '.' asFilename pathName.
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top := StandardSystemView new.
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top extent:(300 @ 200).
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v := ScrollableView for:FileSelectionList in:top.
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v origin:(0.0 @ 0.0) corner:(1.0 @ 1.0).
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list := v scrolledView.
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list pattern:'*.rc'.
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list matchBlock:[:name |
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name asFilename isDirectory not
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].
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list action:[:index | Transcript showCr:'you selected: ' , list selectionValue].
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top open
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example10 (show only .rc-files in /etc; dont allow directory changes):
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|top v list|
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top := StandardSystemView new.
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top extent:(300 @ 200).
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v := ScrollableView for:FileSelectionList in:top.
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v origin:(0.0 @ 0.0) corner:(1.0 @ 1.0).
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list := v scrolledView.
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list directory:'/etc'.
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list pattern:'*.rc'.
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list matchBlock:[:name | name printNL.
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name asFilename isDirectory not
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].
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list action:[:index | Transcript showCr:'you selected: ' , list selectionValue].
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top open
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"
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! !
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!FileSelectionList methodsFor:'initialization'!
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initialize
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directory := FileDirectory currentDirectory.
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super initialize.
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pattern := '*'.
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self initializeAction.
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"nontypical use ..."
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"
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FileSelectionList new open
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(FileSelectionList new directory:'/etc') open
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(ScrollableView for:FileSelectionList) open
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(HVScrollableView for:FileSelectionList) open
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"
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!
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initializeAction
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"setup action as: selections in list get forwarded to enterfield if not
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a directory; otherwise directory is changed"
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actionBlock := [:lineNr |
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|entry ok|
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(self selection isKindOf:Collection) ifFalse:[
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entry := self selectionValue.
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(entry endsWith:' ...') ifTrue:[
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entry := entry copyTo:(entry size - 4).
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].
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((directory typeOf:entry) == #directory) ifTrue:[
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ok := false.
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(directory isReadable:entry) ifFalse:[
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self warn:(resources string:'not allowed to read directory %1' with:entry)
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] ifTrue:[
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(directory isExecutable:entry) ifFalse:[
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self warn:(resources string:'not allowed to change to directory %1' with:entry)
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] ifTrue:[
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self directory:(directory pathName , Filename separator asString , entry).
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ok := true.
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]
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].
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ok ifFalse:[
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self deselect
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]
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] ifFalse:[
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realAction notNil ifTrue:[
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realAction value:lineNr
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]
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]
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]
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]
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!
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reinitialize
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directory := FileDirectory currentDirectory.
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super reinitialize
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! !
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!FileSelectionList methodsFor:'accessing'!
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action:aBlock
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"set the action to be performed on a selection"
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realAction := aBlock
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!
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directory
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"return the shown directory"
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^ directory
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!
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directory:nameOrDirectory
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"set the lists contents to the filenames in the directory"
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|oldPath name|
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nameOrDirectory isString ifTrue:[
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name := nameOrDirectory
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] ifFalse:[
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name := nameOrDirectory pathName
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].
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oldPath := directory pathName.
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directory pathName:name.
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realized ifTrue:[
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(directory pathName = oldPath) ifFalse:[
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self updateList
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]
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]
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!
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318 |
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pattern:aPattern
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"set the pattern - if it changes, update the list."
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321 |
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pattern ~= aPattern ifTrue:[
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pattern := aPattern.
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realized ifTrue:[
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self updateList
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].
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].
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38
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328 |
!
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329 |
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330 |
matchBlock:aBlock
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331 |
"set the matchBlock - if non-nil, it controls which
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332 |
names are shown in the list."
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333 |
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334 |
matchBlock := aBlock
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11
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! !
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336 |
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21
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337 |
!FileSelectionList methodsFor:'drawing'!
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338 |
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339 |
redrawFromVisibleLine:startVisLineNr to:endVisLineNr
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340 |
"redefined to look for directory in every line"
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341 |
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24
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|l|
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343 |
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"first, draw chunk of lines"
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super redrawFromVisibleLine:startVisLineNr to:endVisLineNr.
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"then draw marks"
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startVisLineNr to:endVisLineNr do:[:visLineNr |
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l := self visibleLineToListLine:visLineNr.
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350 |
l notNil ifTrue:[
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351 |
(fileTypes at:l) == #directory ifTrue:[
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352 |
self drawRightArrowInVisibleLine:visLineNr
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353 |
]
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354 |
]
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21
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]
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356 |
!
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357 |
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358 |
redrawVisibleLine:visLineNr
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359 |
"if the line is one for a directory, draw a right arrow"
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360 |
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361 |
|l|
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362 |
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363 |
super redrawVisibleLine:visLineNr.
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364 |
l := self visibleLineToListLine:visLineNr.
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365 |
l notNil ifTrue:[
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62
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366 |
(fileTypes at:l) == #directory ifTrue:[
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367 |
self drawRightArrowInVisibleLine:visLineNr
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368 |
]
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21
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369 |
]
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370 |
! !
|
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371 |
|
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11
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372 |
!FileSelectionList methodsFor:'private'!
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373 |
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21
|
374 |
visibleLineNeedsSpecialCare:visLineNr
|
|
|
375 |
|l|
|
|
|
376 |
|
|
|
377 |
l := self visibleLineToListLine:visLineNr.
|
|
|
378 |
l notNil ifTrue:[
|
|
62
|
379 |
(fileTypes at:l) == #directory ifTrue:[^ true].
|
|
|
380 |
^ super visibleLineNeedsSpecialCare:visLineNr
|
|
21
|
381 |
].
|
|
|
382 |
^ false
|
|
|
383 |
!
|
|
|
384 |
|
|
|
385 |
widthForScrollBetween:firstLine and:lastLine
|
|
|
386 |
"return the width in pixels for a scroll between firstLine and lastLine
|
|
|
387 |
- return full width here since there might be directory marks"
|
|
|
388 |
|
|
|
389 |
^ (width - margin - margin)
|
|
|
390 |
!
|
|
|
391 |
|
|
11
|
392 |
updateList
|
|
|
393 |
"set the lists contents to the filenames in the directory"
|
|
|
394 |
|
|
|
395 |
|oldCursor files newList index|
|
|
|
396 |
|
|
|
397 |
oldCursor := cursor.
|
|
|
398 |
self cursor:(Cursor read).
|
|
|
399 |
|
|
38
|
400 |
"
|
|
|
401 |
if the directory-id changed, MUST update.
|
|
|
402 |
(can happen after a restart, when a file is no longer
|
|
|
403 |
there, has moved or is NFS-mounted differently)
|
|
|
404 |
"
|
|
11
|
405 |
directoryId == directory id ifFalse:[
|
|
62
|
406 |
timeStamp := directory timeOfLastChange.
|
|
|
407 |
directoryId := directory id.
|
|
|
408 |
directoryContents := directory asText sort.
|
|
|
409 |
directoryFileTypes := OrderedCollection new.
|
|
|
410 |
directoryContents do:[:name | directoryFileTypes add:(directory typeOf:name)].
|
|
11
|
411 |
].
|
|
|
412 |
|
|
|
413 |
files := directoryContents.
|
|
|
414 |
newList := OrderedCollection new.
|
|
21
|
415 |
fileTypes := OrderedCollection new.
|
|
11
|
416 |
index := 1.
|
|
|
417 |
files do:[:name |
|
|
62
|
418 |
|fullName|
|
|
59
|
419 |
|
|
62
|
420 |
fullName := directory pathName , Filename separator asString , name.
|
|
59
|
421 |
|
|
62
|
422 |
(matchBlock isNil or:[matchBlock value:fullName]) ifTrue:[
|
|
|
423 |
(directoryFileTypes at:index) == #directory ifTrue:[
|
|
|
424 |
name = '..' ifTrue:[
|
|
|
425 |
newList add:name.
|
|
|
426 |
fileTypes add:(directoryFileTypes at:index)
|
|
|
427 |
] ifFalse:[
|
|
|
428 |
name = '.' ifTrue:[
|
|
|
429 |
"ignore"
|
|
|
430 |
] ifFalse:[
|
|
|
431 |
newList add:(name ", ' ...'").
|
|
|
432 |
fileTypes add:(directoryFileTypes at:index)
|
|
|
433 |
]
|
|
|
434 |
]
|
|
|
435 |
] ifFalse:[
|
|
|
436 |
(pattern isNil or:[pattern isEmpty or:[pattern = '*' or:[pattern match:name]]]) ifTrue:[
|
|
|
437 |
newList add:name.
|
|
|
438 |
fileTypes add:(directoryFileTypes at:index)
|
|
|
439 |
]
|
|
|
440 |
].
|
|
|
441 |
].
|
|
|
442 |
index := index + 1
|
|
11
|
443 |
].
|
|
|
444 |
super list:newList.
|
|
|
445 |
self cursor:oldCursor.
|
|
|
446 |
! !
|
|
|
447 |
|
|
|
448 |
!FileSelectionList methodsFor:'realization'!
|
|
|
449 |
|
|
|
450 |
realize
|
|
|
451 |
"make the view visible; redefined to check if directory is still
|
|
|
452 |
valid (using timestamp and inode numbers) - reread if not"
|
|
|
453 |
|
|
|
454 |
(timeStamp isNil
|
|
|
455 |
or:[(directory timeOfLastChange > timeStamp)
|
|
|
456 |
or:[(directoryId isNil)
|
|
|
457 |
or:[directoryId ~~ directory id]]]) ifTrue:[
|
|
62
|
458 |
directoryId := nil.
|
|
|
459 |
self updateList
|
|
11
|
460 |
].
|
|
|
461 |
super realize
|
|
|
462 |
! !
|