"

 COPYRIGHT (c) 1997 by eXept Software AG

              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.

"

"{ Package: 'stx:libwidg2' }"

"{ NameSpace: Smalltalk }"

View subclass:#NoteBookView

	instanceVariableNames:'list listHolder foregroundColor backgroundColor selection enabled

		action useIndex direction numberOfLines selectConditionBlock

		accessTabMenuAction canvas canvasInset canvasHolder

		halfLightColor halfShadowColor fitLastRow tabModus

		lastComputedExtent keepCanvas activeForegroundColor

		activeBackgroundColor drawLightColor edgeStyle tabInset

		tabLabelInset disabledForegroundColor tabLevel tabTopMargin

		tabBottomMargin selectionInsetX selectionInsetY translateLabel

		buttonPrev buttonNext tabRightMargin tabLeftMargin

		showDestroyTabButton destroyTabAction activeTabMarkerColor

		activeTabMarkerFGColor tabWasActiveWhenPressed removeTabIcon

		removeTabEnteredIcon removeTabDisabledIcon

		showingEnteredRemoveTabButton lastUserSelection minimumTabWidth

		addTabAction addTabIcon addTabEnteredIcon addTabDisabledIcon

		showingEnteredAddTabButton canvasLevel

		showDestroyTabButtonOnSingleTab suppressAccessCharacters'

	classVariableNames:'DefaultForegroundColor DefaultBackgroundColor

		DefaultActiveForegroundColor DefaultActiveBackgroundColor

		DefaultShadowColor DefaultHalfShadowColor DefaultLightColor

		DefaultHalfLightColor DefaultEdgeStyle DisabledForegroundColor

		DefaultActiveTabMarkerColor DefaultActiveTabMarkerFgColor

		RemoveTabIcon RemoveTabEnteredIcon AddTabIcon AddTabEnteredIcon'

	poolDictionaries:''

	category:'Views-Layout'

!

Object subclass:#Tab

	instanceVariableNames:'label tabItem printableLabel disabledLabel lineNr

		unselectedLayout selectedLayout layout extent accessCharacter

		lastFocusViewId activeHelpKey activeHelpText'

	classVariableNames:''

	poolDictionaries:''

	privateIn:NoteBookView

!

!NoteBookView class methodsFor:'documentation'!

copyright

"

 COPYRIGHT (c) 1997 by eXept Software AG

              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

"

    implements the noteBook.

    [author:]

        Claus Atzkern

    [see also:]

        TabView

"

!

examples

"

  tabs at top & bottom

                                                                                [exBegin]                                      

    |top tab1 tab2|

    top := StandardSystemView extent:300@100.

    tab1 := NoteBookView origin:0.0 @ 0.0 corner:1.0 @ 0.5 in:top.

    tab1 direction:#top.

    tab1 list:#( 'Foo' 'Bagr' 'Baz' 'Bgar' 'Baqz'  ).

    tab2 := NoteBookView origin:0.0 @ 0.5 corner:1.0 @ 1.0 in:top.

    tab2 direction:#bottom.

    tab2 list:#( 'Foo' 'Bagr' 'Baz' 'Bgar' 'Baqz'  ).

    top open.

                                                                                [exEnd]

  tabs at left & right

                                                                                [exBegin]                                      

    |top tab1 tab2|

    top := StandardSystemView extent:100@300.

    tab1 := NoteBookView origin:0.0 @ 0.0 corner:0.5 @ 01.0 in:top.

    tab1 direction:#left.

    tab1 list:#( 'Foo' 'Bagr' 'Baz' 'Bgar' 'Baqz'  ).

    tab2 := NoteBookView origin:0.5 @ 0.0 corner:1.0 @ 1.0 in:top.

    tab2 direction:#right.

    tab2 list:#( 'Foo' 'Bagr' 'Baz' 'Bgar' 'Baqz'  ).

    top open.

                                                                                [exEnd]

  tabs at top & bottom, with add-tab button

                                                                                [exBegin]                                      

    |top tab1 tab2|

    top := StandardSystemView extent:300@100.

    tab1 := NoteBookView origin:0.0 @ 0.0 corner:1.0 @ 0.5 in:top.

    tab1 addTabAction:[ self halt ].

    tab1 direction:#top.

    tab1 list:#( 'Foo' 'Bagr' 'Baz' 'Bgar' 'Baqz'  ).

    tab2 := NoteBookView origin:0.0 @ 0.5 corner:1.0 @ 1.0 in:top.

    tab2 addTabAction:[ self halt ].

    tab2 direction:#bottom.

    tab2 list:#( 'Foo' 'Bagr' 'Baz' 'Bgar' 'Baqz'  ).

    top open.

                                                                                [exEnd]

  tabs at left & right, with add-tab button

                                                                                [exBegin]                                      

    |top tab1 tab2|

    top := StandardSystemView extent:100@300.

    tab1 := NoteBookView origin:0.0 @ 0.0 corner:0.5 @ 01.0 in:top.

    tab1 addTabAction:[ self halt ].

    tab1 direction:#left.

    tab1 list:#( 'Foo' 'Bagr' 'Baz' 'Bgar' 'Baqz'  ).

    tab2 := NoteBookView origin:0.5 @ 0.0 corner:1.0 @ 1.0 in:top.

    tab2 addTabAction:[ self halt ].

    tab2 direction:#right.

    tab2 list:#( 'Foo' 'Bagr' 'Baz' 'Bgar' 'Baqz'  ).

    top open.

                                                                                [exEnd]

"

! !

!NoteBookView class methodsFor:'defaults'!

defaultFont

    ^ MenuView defaultFont

!

updateStyleCache

    "extract values from the styleSheet and cache them in class variables"

    <resource: #style (#'noteBook.foregroundColor' #'noteBook.backgroundColor'

                       #'noteBook.activeForegroundColor' #'noteBook.activeBackgroundColor'

                       #'noteBook.lightColor' #'noteBook.halfLightColor' #'noteBook.shadowColor'

                       #'noteBook.halfShadowColor' #'noteBook.edgeStyle'

                       #'noteBook.activeTabMarkerColor'

                       #'noteBook.showRemoveTabIcon' 

                      )>

    DefaultForegroundColor := StyleSheet colorAt:#'noteBook.foregroundColor'.

    DefaultForegroundColor isNil ifTrue:[

        DefaultForegroundColor := StyleSheet colorAt:#'button.foregroundColor'.

    ].

    DefaultBackgroundColor := StyleSheet colorAt:#'noteBook.backgroundColor'.

    DefaultActiveForegroundColor := StyleSheet colorAt:#'noteBook.activeForegroundColor'.

    DefaultActiveForegroundColor isNil ifTrue:[

        DefaultActiveForegroundColor := StyleSheet colorAt:#'button.activeForegroundColor'

    ].

    DefaultActiveBackgroundColor := StyleSheet colorAt:#'noteBook.activeBackgroundColor'.

    DefaultLightColor := StyleSheet colorAt:#'noteBook.lightColor'.

    DefaultLightColor isNil ifTrue:[

        DefaultLightColor := StyleSheet colorAt:'button.lightColor'

    ].

    DefaultHalfLightColor := StyleSheet colorAt:#'noteBook.halfLightColor'.

    DefaultHalfLightColor isNil ifTrue:[

        DefaultHalfLightColor := StyleSheet colorAt:#'button.halfLightColor'

    ].    

    DefaultShadowColor := StyleSheet colorAt:#'noteBook.shadowColor'.

    DefaultShadowColor isNil ifTrue:[

        DefaultShadowColor := StyleSheet colorAt:'button.shadowColor'

    ].

    DefaultHalfShadowColor := StyleSheet colorAt:#'noteBook.halfShadowColor'.

    DefaultHalfShadowColor isNil ifTrue:[

        DefaultHalfShadowColor := StyleSheet colorAt:#'button.halfShadowColor'

    ].

    DefaultEdgeStyle := StyleSheet at:#'noteBook.edgeStyle'.

    DefaultEdgeStyle isNil ifTrue:[

        DefaultEdgeStyle := StyleSheet at:#'button.edgeStyle'

    ].

    DefaultEdgeStyle == #softWin95 ifFalse:[

        DefaultEdgeStyle := nil

    ].

    DefaultActiveTabMarkerColor := StyleSheet colorAt:#'noteBook.activeTabMarkerColor'.

    DefaultActiveTabMarkerColor isNil ifTrue:[

        DefaultActiveTabMarkerFgColor := nil.

    ] ifFalse:[

        DefaultActiveTabMarkerFgColor := Color redByte:255 greenByte:138 blueByte:41.

    ].

    ((StyleSheet at:#'noteBook.showRemoveTabIcon' default:true)

    and:[ ToolbarIconLibrary notNil ]) ifTrue:[

        RemoveTabIcon := ToolbarIconLibrary removeTabIcon.

        RemoveTabEnteredIcon := ToolbarIconLibrary removeTabEnteredIcon.   

    ] ifFalse:[

        RemoveTabIcon := RemoveTabEnteredIcon := nil.   

    ].

    AddTabIcon := ToolbarIconLibrary addTabIcon.

    AddTabEnteredIcon := ToolbarIconLibrary addTabEnteredIcon.   

    "

     self updateStyleCache

    "

! !

!NoteBookView class methodsFor:'image specs'!

tabBackgroundVista

    "This resource specification was automatically generated

     by the ImageEditor of ST/X."

    "Do not manually edit this!! If it is corrupted,

     the ImageEditor may not be able to read the specification."

    "

     self tabBackgroundVista inspect

     ImageEditor openOnClass:self andSelector:#tabBackgroundVista

     Icon flushCachedIcons

    "

    <resource: #image>

    ^Icon

        constantNamed:#'NoteBookView class tabBackgroundVista'

        ifAbsentPut:[(Depth8Image new) width: 5; height: 25; photometric:(#palette); bitsPerSample:(#[8]); samplesPerPixel:(1); bits:(ByteArray fromPackedString:'

B@ HB@ NC 8NC 4MCP4MCP4MCP4LC@0LC@,KB0,KB0,KB0,JB (JB (JB (JBP$IBP$GA0\GA0@@@@@@@@@@@@@@@@@@@@@@@@@@@PDA@PDA@PDA@PHB@ HB

@0LC@0LDA@PDA@TEAPTEA XFA XGA0\GA0\GA0\GA0\GA0\b') ; colorMapFromArray:#[232 232 232 233 233 233 234 234 234 235 235 235 236 236 236 237 237 237 238 238 238 240 240 240 242 242 242 245 245 245 246 246 246 247 247 247 248 248 248 249 249 249 250 250 250]; yourself]

! !

!NoteBookView methodsFor:'accepting-items'!

tabAtIndex:tabIndex

    ^ list at:tabIndex ifAbsent:nil.

    "Created: / 21-11-2018 / 16:15:51 / Claus Gittinger"

!

tabAtIndex:tabIndex put:newLabelOrTabItem

    "called when the contents of a tab changed; 

     test whether the old layout can be reused;

     otherwise we must recompute the whole list

    "

    |tab tabLayout prefX prefY tabPrefExtent|

    "/ a single item's label has changed

    tab := list at:tabIndex ifAbsent:nil.

    tab notNil ifTrue:[

        tab labelOrTabItem:newLabelOrTabItem on:self.

        "/ no resizing, if the new string fits

        "/ and is not too small for current tab-layout

        tabLayout := tab unselectedLayout.

        tabLayout isNil ifTrue:[

            "/ cg: just encountered this one - what does it mean?

            self invalidate.

            ^ self.

        ].

        tabPrefExtent := self preferredExtentForTab:tab.

        prefX := tabPrefExtent x.

        prefY := tabPrefExtent y.

        (prefX <= tabLayout width and:[prefY <= tabLayout height]) ifTrue:[

            "/ the new string fits into the current tab-layout

            numberOfLines == 1 ifTrue:[         "/ do not change the layout

                ^ self invalidateTab:tab

            ].

            "/ check whether the string is not too small for current tab-layout

            ((tabLayout width <= (prefX * 1.5)) and:[tabLayout height <= (prefY * 1.5)]) ifTrue:[

                ^ self invalidateTab:tab.      "/ do not change the layout

            ].

        ].

        self recomputeList.

        self invalidate.

        ^ self.

    ].

    "/ can this happen ?

    "Created: / 25-02-2000 / 14:13:59 / cg"

    "Modified: / 07-03-2012 / 17:49:37 / cg"

    "Modified (format): / 21-11-2018 / 16:16:05 / Claus Gittinger"

! !

!NoteBookView methodsFor:'accessing'!

canvas

    "returns the canvas; the containter view

    "

    ^ canvas

!

canvas:newCanvas

    "change the canvas; the container view"

    |oldCanvas hadFocus focusView|

    oldCanvas := canvas.

    hadFocus  := false.

    (shown and:[newCanvas notNil and:[oldCanvas notNil]]) ifTrue:[

        windowGroup notNil ifTrue:[

            focusView := windowGroup focusView.

        ].

        (focusView notNil and:[focusView ~~ self]) ifTrue:[

            (focusView isComponentOf:oldCanvas) ifTrue:[

                hadFocus := true.

            ].

        ].

    ].

    newCanvas ~~ oldCanvas ifTrue:[

        oldCanvas notNil ifTrue:[

            (keepCanvas or:[(oldCanvas objectAttributeAt:#isTabItem) == true]) ifTrue:[

                oldCanvas beInvisible.

            ] ifFalse:[

                oldCanvas destroy.

            ].

        ].

        canvas := newCanvas.

        newCanvas notNil ifTrue:[

            tabModus := false.

            self resizeCanvas.

            (subViews size == 0 or:[(subViews includesIdentical:newCanvas) not]) ifTrue:[

                self addSubView:newCanvas

            ].

            shown ifTrue:[

                newCanvas beVisible.

                newCanvas raise.

            ].

        ].

    ].

    (shown and:[hadFocus]) ifTrue:[

        self pushEvent:#updateFocusView

    ].

    "Modified: / 05-11-2007 / 14:23:58 / cg"

!

hierarchicalIndexOfChild:aView

    ^ aView hierarchicalIndexInList:subViews

!

lastUserSelection

    ^ lastUserSelection

!

lastUserSelection:something

    lastUserSelection := something

!

list

    "return the list of Tabs or Labels

    "

    ^ list collect:[:aTab| aTab label ]

!

list:newTabItemListOrNil

    "set the tab-list.

     warning: transforms the given list to a list of tabItems,

     where each holds on to a corresponding list element.

     When a new list comes in, the list elements are compared for identity.

     This may make problems, when strings come in.

     Q: should we compare for equality here?"

    |selectionName newList newTabItemList oldSelectedTab|

    newTabItemList := newTabItemListOrNil ? #().

    useIndex ifFalse:[

        selectionName := self selection.

    ].

    list do:[:eachTab| 

        |tabItem|

        ((tabItem := eachTab tabItem) notNil and:[(newTabItemList includesIdentical:tabItem)]) ifFalse:[

            tabItem notNil ifTrue:[tabItem view:nil].

            eachTab removeDependent:self

        ]

    ].

    newList := newTabItemList collect:

        [:eachNewItem| 

            |tab|

            (eachNewItem isNil or:[(tab := list detect:[:eachTab| eachTab tabItem == eachNewItem] ifNone:nil) isNil]) ifTrue:[

                tab := Tab labelOrTabItem:eachNewItem on:self.

                tab addDependent:self.

            ].

            tab

        ].

    selection notNil ifTrue:[

        oldSelectedTab := 

            useIndex 

                ifTrue:[ list at: selection ifAbsent:nil ]

                ifFalse:[ selection ].

    ].

    list            := newList.

    self flushCachedPreferredExtent.

    numberOfLines   := nil.

    selection notNil ifTrue:[

        useIndex ifTrue:[

            selection > list size ifTrue:[

                selection := nil.

                self selectionChanged.

            ] ifFalse:[

                (list at:selection) == oldSelectedTab ifTrue:[

                    "/ actually no change

                    "/ self halt

                ] ifFalse:[

                    model notNil ifTrue:[

                        "/ force a simulated selection change (so that the canvas gets updated)

                        model changed.

                    ]

                ]

            ].

        ] ifFalse:[

            selection := list findFirst:[:el| el label = selectionName ].

            selection == 0 ifTrue:[

                selection := nil.

                self selectionChanged.

            ] ifFalse:[

                model notNil ifTrue:[

                    "/ force a simulated selection change (so that the canvas gets updated)

                    model changed.

                ]

            ]

        ]

    ].

    self recomputeList.

    self invalidate.

    "Modified: / 16-07-2013 / 19:15:05 / cg"

    "Modified: / 09-11-2018 / 20:17:08 / Claus Gittinger"

!

listIndexOf:something

    "convert something to an index into the list;

     returns the index or nil if not found

    "

    |index|

    something isNil ifTrue:[^ nil ].

    something isNumber ifTrue:[

        index := something

    ] ifFalse:[

        index := list findFirst:[:aTab|aTab label = something].

        index == 0 ifTrue:[

            index := list findFirst:[:aTab|aTab printableLabel = something]

        ]

    ].

    ^ (index between:1 and:list size) ifTrue:[index] ifFalse:[nil]

!