"

 COPYRIGHT (c) 1991 by Claus Gittinger

              All Rights Reserved

 This software is furnished under a license and may be used

 only in accordance with the terms of that license and with the

 inclusion of the above copyright notice.   This software may not

 be provided or otherwise made available to, or used by, any

 other person.  No title to or ownership of the software is

 hereby transferred.

"

StandardSystemView subclass:#FileBrowser

	instanceVariableNames:'labelView filterField fileListView subView currentDirectory

		fileList checkBlock checkDelta timeOfLastCheck showLongList

		showVeryLongList showDotFiles myName killButton compressTabs

		lockUpdate previousDirectory currentFileName timeOfFileRead

		tabSpec commandView commandIndex fileEncoding tabRulerView

		scrollView'

	classVariableNames:'DirectoryHistory DirectoryHistoryWhere HistorySize DefaultIcon

		CommandHistory CommandHistorySize'

	poolDictionaries:''

	category:'Interface-Browsers'

!

!FileBrowser class methodsFor:'documentation'!

copyright

"

 COPYRIGHT (c) 1991 by Claus Gittinger

              All Rights Reserved

 This software is furnished under a license and may be used

 only in accordance with the terms of that license and with the

 inclusion of the above copyright notice.   This software may not

 be provided or otherwise made available to, or used by, any

 other person.  No title to or ownership of the software is

 hereby transferred.

"

!

documentation

"

    this used to be a very simple demo application,

    but migrated into a quite nice tool, includes all kinds of 

    warning and information boxes, background processes for directory-

    reading and internationalized strings. A good example for beginners,

    on how to do things .... (and maybe how not to do things ;-, since some

    stuff is historic and was implemented at times when better mechanisms

    were not available)

    See additional information in 'doc/misc/fbrowser.doc'.

    WARNING: files edited with FileBrowser will have leading spaces (multiple-8)

             being replaced by tabs. If tabs are to be preserved at other

             positions (for example, sendmail-config files) they will be

             corrupt after being written.

    [instance variables]:

        checkDelta      <Integer>       number of seconds of check interval

                                        (looks ever so often if shown directory

                                         has changed). You may make this number

                                        higher, if your network-times are

                                        incorrect and thus, the filebrowser

                                        checks too often.

        compressTabs    <Boolean>       if true, leading spaces will be

                                        replaced by tabs when saving text

    some of the defaults (long/short list etc.) can be set by the resource file;

    see FileBrowser>>initialize for more details..

    [author:]

        Claus Gittinger

"

! !

!FileBrowser class methodsFor:'instance creation'!

openOn:aDirectoryPath

    "start a new FileBrowser in a pathname"

    ^ (self new currentDirectory:aDirectoryPath) open

    "

     FileBrowser openOn:'aDirectoryPath'

     FileBrowser openOn:'/etc'

     FileBrowser openOn:'..'

     FileBrowser openOn:'.'

    "

!

openOnFileNamed:aFilename

    "start a new FileBrowser on a file"

    |f browser|

    f := aFilename asFilename.

    browser := self new.

    browser currentDirectory:f directoryName.

    browser showFile:f baseName.

    ^ browser open

    "

     FileBrowser openOnFileNamed:'Makefile'

     FileBrowser openOnFileNamed:'../Makefile'

     FileBrowser openOnFileNamed:'/tmp/foo'

    "

! !

!FileBrowser class methodsFor:'command history'!

addToCommandHistory:aCommandString

    (aCommandString notNil and:[aCommandString notEmpty]) ifTrue:[

        CommandHistory notNil ifTrue:[

            CommandHistory addFirst:aCommandString.

            CommandHistory size > CommandHistorySize ifTrue:[

                CommandHistory removeLast

            ]

        ].

    ]

    "Created: 14.11.1996 / 14:58:13 / cg"

! !

!FileBrowser class methodsFor:'defaults'!

defaultIcon

    |nm|

    DefaultIcon isNil ifTrue:[

        DefaultIcon := self classResources at:'ICON' default:nil.

        DefaultIcon isNil ifTrue:[

            nm := ClassResources at:'ICON_FILE' default:'FBrowser.xbm'.

            DefaultIcon := Image 

                            fromFile:nm

                            resolution:100.

            DefaultIcon isNil ifTrue:[

                DefaultIcon := Image 

                                fromFile:('bitmaps/' , nm)

                                resolution:100.

            ]

        ].

        DefaultIcon notNil ifTrue:[

            DefaultIcon := DefaultIcon on:Display

        ]

    ].

    ^ DefaultIcon

    "Modified: 19.3.1997 / 22:23:58 / cg"

! !

canDrop:someObject

    ^ someObject isFileObject

    "Modified: 5.4.1997 / 02:17:04 / cg"

!

drop:someObject at:aPoint

    someObject isFileObject ifFalse:[^ self].

    someObject isDirectory ifTrue:[

        self changeDirectoryTo:someObject theObject pathName

    ] ifFalse:[

        self changeDirectoryTo:someObject theObject directoryName.

        fileListView selectElement:someObject theObject baseName.

        self doFileGet:false.

    ].

    "Created: 5.4.1997 / 02:15:40 / cg"

    "Modified: 5.4.1997 / 02:20:01 / cg"

handlesKeyPress:key inView:view

    "this method is reached via delegation: are we prepared to handle

     a keyPress in some other view ?"

    <resource: #keyboard (#GotoLine #InspectIt #CmdI #Cmdu #DoIt #Delete #BackSpace #Accept)>

    view == fileListView ifTrue:[

        (key == #Delete 

        or:[key == #BackSpace

        or:[key == #Accept

        or:[key == #CmdI

        or:[key == #Cmdu

        or:[key == #InspectIt

        or:[key == #GotoLine

        or:[key == #DoIt]]]]]]]) ifTrue:[^ true].

    ].

    ^ false

    "Created: 28.1.1997 / 14:03:20 / stefan"

    "Modified: 28.1.1997 / 15:03:30 / stefan"

!

keyPress:key x:x y:y view:view

    "this method is reached via delegation from the fileListView"

    <resource: #keyboard (#GotoLine #InspectIt #CmdI #Cmdu #DoIt #Delete #BackSpace #Accept)>

    (key == #Delete or:[key == #BackSpace]) ifTrue:[

        self fileRemove.

        ^ self

    ].

    (key == #Accept) ifTrue:[

        self fileFileIn.

        ^ self

    ].

    (key == #GotoLine) ifTrue:[

        self fileGet.

        ^ self

    ].

    (key == #DoIt) ifTrue:[

        self fileExecute.

        ^ self

    ].

    (key == #InspectIt) ifTrue:[

        self fileGetInfo.

        ^ self

    ].

    (key == #CmdI) ifTrue:[

        self fileGetLongInfo.

        ^ self

    ].

    (key == #Cmdu) ifTrue:[

        self updateCurrentDirectory.

        ^ self

    ].

    fileListView keyPress:key x:x y:y

    "Created: 28.1.1997 / 14:03:56 / stefan"

    "Modified: 28.1.1997 / 15:03:56 / stefan"

!

mapped 

    super mapped.

    "

     whant to know about changed history

    "

    self updateCurrentDirectory

!

visibilityChange:how

    |wasVisible|

    wasVisible := shown.

    super visibilityChange:how.

    (wasVisible not and:[shown]) ifTrue:[

        "

         start checking again

        "

        Processor removeTimedBlock:checkBlock.

        Processor addTimedBlock:checkBlock afterSeconds:checkDelta.

    ]

! !

!FileBrowser methodsFor:'fileList user interaction'!

changeDisplayMode

    "toggle from long to short listing (and vice-versa)"

    showLongList := showLongList not.

    showLongList ifTrue:[

        false "self is3D" ifTrue:[

            scrollView topInset:(tabRulerView superView height).

            tabRulerView superView leftInset:(fileListView originRelativeTo:scrollView) x.

        ] ifFalse:[

            scrollView topInset:(tabRulerView height).

            tabRulerView leftInset:(fileListView originRelativeTo:scrollView) x.

        ].

        tabRulerView hiddenTabs:#(1).

        tabRulerView fixedTabs:#(1).

    ] ifFalse:[

        scrollView topInset:0

    ].

    tabSpec := nil.

    self updateCurrentDirectory

    "Modified: 28.3.1997 / 17:07:56 / cg"

!

changeDotFileVisibility

    "turn on/off visibility of files whose name starts with '.'"

    showDotFiles := showDotFiles not.

    self updateCurrentDirectory

!

fileEncoding

    "open a dialog to allow change of the files character encoding.

     Files are converted to internal encoding when read, and converted back

     to this encoding when saved.

     The default encoding is nil, which means that files are already in

     the internal encoding (which is iso8859).

     Notice: currently, not too many encodings are supported by the system."

    |dialog list descr encodings encodingNames idx|

    list := SelectionInList new.

    descr := CharacterArray supportedExternalEncodings.

    encodings := descr at:2.

    encodingNames := descr at:1.

    list list:encodingNames.

    list selectionIndex:(encodings indexOf:fileEncoding ifAbsent:1).

    dialog := Dialog new.

    dialog addTextLabel:(resources string:'ENCODING_MSG') withCRs.

    dialog addVerticalSpace.

    dialog addListBoxOn:list withNumberOfLines:5.

    dialog addAbortButton; addOkButton.

    dialog open.

    dialog accepted ifTrue:[

        idx := list selectionIndex.

        fileEncoding := encodings at:idx.

        self validateFontEncodingFor:fileEncoding ask:true.

    ].

    "Modified: 31.10.1996 / 16:47:47 / cg"

!

fileExecute

    "if text was modified show a queryBox,

     otherwise pop up execute box immediately"

    |action|

    "

     this replaces everything by the commands output ...

    "

    action := [:command | 

                self class addToCommandHistory:command.

                self doExecuteCommand:command replace:true

              ].

    (self askIfModified:'contents has not been saved.\\Modifications will be lost when command is executed.'

              yesButton:'execute') ifFalse:[^ self].

"/    "

"/     this inserts the commands output ...

"/    "

"/    action := [:command| self doExecuteCommand:command replace:false].

"/

    self askForCommandThenDo:action

    "Modified: 14.11.1996 / 14:59:34 / cg"

!

fileFileIn

    "fileIn the selected file(s)"

    self fileFileInLazy:false 

!

fileFileInLazy

    "fileIn the selected file(s). Do a quick load (no compilation)"

    self fileFileInLazy:true 

!

fileFileInLazy:lazy

    "fileIn the selected file(s)"

    |aStream here oldPath wasLazy bos|

    self selectedFilesDo:[:fileName |

        ((currentDirectory typeOf:fileName) == #regular) ifTrue:[

            here := currentDirectory pathName.

            ((fileName endsWith:'.o') 

            or:[(fileName endsWith:'.so')

            or:[fileName endsWith:'.obj']]) ifTrue:[

                Object abortSignal catch:[

                    |p|

                    p := (here , '/' ,fileName).

                    "/

                    "/ look if already loaded ...  then unload first

                    "/

                    (ObjectFileLoader loadedObjectFiles includes:p) ifTrue:[

                        (Dialog confirm:(resources 

                                            string:'%1 is already loaded; load anyway ?'

                                            with:p)) ifFalse:[

                            ^ self

                        ].

                        Transcript showCR:'unloading old ' , p , ' ...'.

                        ObjectFileLoader unloadObjectFile:p. 

                    ].

                    Transcript showCR:'loading ' , p , ' ...'.

                    ObjectFileLoader loadObjectFile:p.

                    Class addInfoRecord:('fileIn ' , fileName) 

                ]

            ] ifFalse:[

                (fileName endsWith:'.cls') ifTrue:[

                    aStream := FileStream readonlyFileNamed:fileName in:currentDirectory.

                    aStream notNil ifTrue:[

                        bos := BinaryObjectStorage onOld:aStream.

                        Class nameSpaceQuerySignal 

                            answer:Smalltalk

                            do:[

                                bos next.

                            ].

                        bos close

                    ]

                ] ifFalse:[

                    ((fileName endsWith:'.class')

                    or:[(fileName endsWith:'.cla')

                    or:[(fileName endsWith:'.CLA')]]) ifTrue:[

                        JavaClassReader notNil ifTrue:[

                            JavaClassReader loadFile:(currentDirectory pathName , '/' , fileName)

                        ]

                    ] ifFalse:[

                        aStream := FileStream readonlyFileNamed:fileName in:currentDirectory.

                        aStream notNil ifTrue:[

                            [

                                Class withoutUpdatingChangesDo:[

                                    oldPath := Smalltalk systemPath.

                                    Smalltalk systemPath:(oldPath copy addFirst:here; yourself).

                                    wasLazy := Compiler compileLazy:lazy.

                                    aStream fileIn.

                                ].

                                Class addInfoRecord:('fileIn ' , fileName) 

                            ] valueNowOrOnUnwindDo:[

                                Compiler compileLazy:wasLazy.

                                Smalltalk systemPath:oldPath.

                                aStream close

                            ]

                        ]

                    ]

                ]

            ]

        ]

    ]

    "Modified: 5.11.1996 / 22:01:14 / cg"

!

fileGet

    "get contents of selected file into subView.

     If text was modified show a queryBox,

     otherwise get it immediately"

    self fileGet:false

    "Modified: 19.6.1996 / 09:38:45 / cg"

!

fileGet:viaDoubleClick

    "get contents of selected file into subView.

     If text was modified show a queryBox,

     otherwise get it immediately"

    |fileName msg label|

    (subView modified not or:[subView contentsWasSaved]) ifTrue:[

        self doFileGet:viaDoubleClick.

        ^ self

    ].

    fileName := self getSelectedFileName.

    fileName notNil ifTrue:[

        (currentDirectory isDirectory:fileName) ifTrue:[

            msg := 'contents has not been saved.\\Modifications will be lost when directory is changed.'.

            label := 'change'.

        ] ifFalse:[

            msg := 'contents has not been saved.\\Modifications will be lost when new file is read.'.

            label := 'get'.

        ].

        (self ask:(resources at:msg) yesButton:label) ifTrue:[

            self doFileGet:viaDoubleClick

        ]

    ]

    "Created: 19.6.1996 / 09:38:35 / cg"

    "Modified: 2.4.1997 / 23:24:40 / cg"