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395
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Object subclass:#DropObject
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instanceVariableNames:'theObject'
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classVariableNames:''
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poolDictionaries:''
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category:'Interface-Support'
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!
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DropObject class instanceVariableNames:'DisplayObject'
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"
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The following class instance variables are inherited by this class:
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Object -
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"
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!
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DropObject subclass:#File
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instanceVariableNames:'info isHtmlFile isImageFile isPrintable'
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395
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classVariableNames:''
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poolDictionaries:''
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privateIn:DropObject
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!
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403
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DropObject subclass:#Color
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395
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instanceVariableNames:''
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classVariableNames:''
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poolDictionaries:''
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privateIn:DropObject
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!
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DropObject subclass:#Image
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instanceVariableNames:''
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classVariableNames:''
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poolDictionaries:''
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privateIn:DropObject
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!
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403
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DropObject subclass:#Text
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instanceVariableNames:''
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classVariableNames:''
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poolDictionaries:''
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privateIn:DropObject
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!
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!DropObject class methodsFor:'instance creation'!
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new:someThing
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"create an instance dependant on something
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"
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|cls|
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someThing isColor ifTrue:[cls := Color
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] ifFalse:[someThing isImageOrForm ifTrue:[cls := Image
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] ifFalse:[(someThing isKindOf:Filename) ifTrue:[cls := File
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] ifFalse:[cls isString ifTrue:[cls := Text
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] ifFalse:[
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cls := DropObject
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]]]].
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^ cls new theObject:someThing
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!
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newColor:aColor
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^ Color new theObject:aColor
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!
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newFile:aFilename
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^ File new theObject:aFilename
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!
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newImage:anImageOrForm
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^ Image new theObject:anImageOrForm
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!
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newText:aTextOrString
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^ Text new theObject:aTextOrString
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! !
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403
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!DropObject class methodsFor:'defaults'!
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displayObject
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DisplayObject notNil ifTrue:[
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^ DisplayObject
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].
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DisplayObject := Smalltalk::Image fromFile:(self displayObjectName).
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^ DisplayObject
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!
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displayObjectName
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^ 'bitmaps/xpmBitmaps/plain_pixmaps/balloon3.xpm'
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! !
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!DropObject methodsFor:'accessing'!
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theObject
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"return the value of the instance variable 'theObject' (automatically generated)"
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^ theObject!
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theObject:something
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"set the value of the instance variable 'theObject' (automatically generated)"
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theObject := something.! !
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!DropObject methodsFor:'queries'!
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displayObject
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"return my graphical representation - here a default is returned"
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403
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^ self class displayObject
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! !
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!DropObject methodsFor:'testing'!
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isColorObject
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^ false
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!
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isFileObject
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^ false
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!
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isImageObject
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^ false
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!
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isTextObject
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^ false
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! !
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403
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!DropObject::File class methodsFor:'defaults'!
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displayObjectName
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^ 'bitmaps/xpmBitmaps/plain_pixmaps/xfm_file.xpm'
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! !
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!DropObject::File methodsFor:'accessing'!
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theObject:aPathname
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|path|
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path := OperatingSystem pathNameOf:(aPathname asString).
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info := OperatingSystem infoOf:path.
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super theObject:(path asFilename)
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! !
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!DropObject::File methodsFor:'queries'!
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exists
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"returns true if file exists
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"
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^ info notNil
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!
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isDirectory
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"checks whether file is a directory
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"
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^ (info notNil and:[info type == #directory])
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!
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isHtmlFile
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"checks whether file is a html file
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"
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|suffixes pathName|
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isHtmlFile isNil ifTrue:[
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(info isNil or:[self isDirectory]) ifTrue:[
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isHtmlFile := false
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] ifFalse:[
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pathName := theObject asString.
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suffixes := #( '.html' '.htm' '.HTML' '.HTM' ).
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isHtmlFile := (suffixes findFirst:[:el|pathName endsWith:el]) ~~ 0
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]
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].
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^ isHtmlFile
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!
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isImageFile
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"returns true if file is assigned to an image
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"
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|suffixes pathName|
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isImageFile isNil ifTrue:[
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(info isNil or:[self isDirectory]) ifTrue:[
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isImageFile := false
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] ifFalse:[
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pathName := theObject asString.
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suffixes := #( '.xpm' '.xbm' '.tiff' '.gif' '.bmp' '.ico' '.icon' ).
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isImageFile := (suffixes findFirst:[:el|pathName endsWith:el]) ~~ 0
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]
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].
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^ isImageFile
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!
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isPrintable
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"returns false if file contains non printable characters
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"
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|stream buff size|
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isPrintable isNil ifTrue:[
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isPrintable := false.
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(info isNil or:[self isDirectory]) ifFalse:[
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stream := FileStream readonlyFileNamed:(theObject pathName).
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stream isNil ifFalse:[
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buff := String new:300.
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size := stream nextBytes:300 into:buff.
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stream close.
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].
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1 to:size do:[:i|
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(buff at:i) isPrintable ifFalse:[
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^ isPrintable
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]
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].
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isPrintable := true
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]
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].
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^ isPrintable
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! !
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!DropObject::File methodsFor:'testing'!
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isFileObject
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^ true
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! !
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!DropObject::Color class methodsFor:'defaults'!
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displayObjectName
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^ 'bitmaps/xpmBitmaps/plain_pixmaps/paint2.xpm'
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! !
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!DropObject::Color methodsFor:'testing'!
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isColorObject
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^ true
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! !
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!DropObject::Image class methodsFor:'defaults'!
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displayObjectName
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^ 'bitmaps/xpmBitmaps/plain_pixmaps/hobbes.xpm'
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! !
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!DropObject::Image methodsFor:'testing'!
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isImageObject
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^ true
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! !
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!DropObject::Text class methodsFor:'defaults'!
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displayObjectName
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^ 'bitmaps/xpmBitmaps/plain_pixmaps/xfm_text.xpm'
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! !
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!DropObject::Text methodsFor:'testing'!
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isTextObject
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^ true
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! !
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!DropObject class methodsFor:'documentation'!
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version
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^ '$Header: /cvs/stx/stx/libview2/DropObject.st,v 1.3 1997-02-03 09:12:22 ca Exp $'
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! !
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