"

 COPYRIGHT (c) 1997-1998 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:libview2' }"

ToolApplicationModel subclass:#ResourceSpecEditor

	instanceVariableNames:'specClass specClassName specSelector aspects modified hasSaved

		tabSelection'

	classVariableNames:''

	poolDictionaries:''

	category:'Interface-Framework'

!

!ResourceSpecEditor class methodsFor:'documentation'!

copyright

"

 COPYRIGHT (c) 1997-1998 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

"

    Abstract super class for the MenuEditor, HierarchicalListEditor, 

    and the TabListEditor.

    It provides common behavior for initializing, loading, saving, and

    asking for modifications of the resource specs (#menu, #hierarchicalList, 

    #tabList) for the concrete subclasses.

    [instance variables:]

        specClass       <Symbol>                class implementing the resource spec

        specSelector    <Symbol>                selector returning the resource spec

        aspects         <IdentityDictionary>    dictionary with the attributes of the resource spec

        modified        <Boolean>               flag whether the resource spec was modified

        hasSaved        <Boolean>               flag whether the resource spec was saved

        tabSelection    <Integer>               index of the tab selection

    [see also:]

        MenuEditor

        HierarchicalListEditor

        TabListEditor

    [author:]

         Thomas Zwick, eXept Software AG

"

! !

!ResourceSpecEditor class methodsFor:'instance creation'!

openModalOnClass:aClass andSelector:aSelector

    "opens modal the Resource Spec Editor on aClass and aSelector"

    ^self new openModalOnClass:aClass andSelector:aSelector

!

openOnClass:aClass andSelector:aSelector

    "opens the Resource Spec Editor on aClass and aSelector"

    ^ self new openOnClass:aClass andSelector:aSelector

! !

!ResourceSpecEditor class methodsFor:'accessing'!

codeGenerationComment

    "returns a comment for the method code generated by myself"

    ^self codeGenerationCommentForClass: self

!

codeGenerationCommentForClass: generatingClass

    "returns a comment for the method code generated by generatingClass"

    |generatingClassName|

    generatingClassName := generatingClass name.

    ^'    "This resource specification was automatically generated\',

     '     by the ', generatingClassName, ' of ST/X."\\',

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

     '     the ', generatingClassName, ' may not be able to read the specification."'

!

resourceType

    "returns the type of resource of the method generated by the Resource Spec Editor;

     concrete subclasses has to reimplement this method"

    ^self subclassResponsibility

! !

!ResourceSpecEditor class methodsFor:'aspects'!

aspects

    "returns the aspects for the attributes of the resource spec components;

     concrete subclasses might reimplement this method in order to return an array"

    ^#()

! !

!ResourceSpecEditor class methodsFor:'queries'!

isVisualStartable

    "return true, if this application can be started via #open.

     (to allow start of a change browser via double-click in the browser)"

    self == ResourceSpecEditor ifTrue:[^false].

    ^super isVisualStartable

!

resourcePackage

    ^ #'stx:libtool2'

! !

!ResourceSpecEditor class methodsFor:'startup / release'!

preSnapshot

    "before a snapshot; updates the channels,

     because the clipboard has removed"

    super preSnapshot.

    instances notNil ifTrue:[

        instances do:[:inst |

            inst updateChannels. 

            inst modifiedChannel value: false. 

        ]

    ]

    "Modified: / 4.2.1999 / 15:32:17 / cg"

! !

!ResourceSpecEditor methodsFor:'accessing'!

clearModified       

    modified := false

!

modified       

    "returns whether the resource spec was modified"

    ^modified

!

modified: aBoolean         

    "sets the resource spec modified as aBoolean"

    modified := aBoolean

!

setModified       

    modified := true

!

specClass

    "returns the class where the resource spec is implemented"

self halt.

    ^ specClass

!

specClass:aClassOrClassName

    "sets the class (or name) where the resource spec is (or should be) implemented"

    aClassOrClassName isBehavior 

        ifTrue: [ specClass := aClassOrClassName ]

        ifFalse:[ specClass := Smalltalk classNamed:aClassOrClassName ]

!

specClassName

    "returns the classes name where the resource spec is implemented"

self halt.

    ^ specClass name

!

specSelector

    "returns the method selector of the resource spec"

    ^specSelector

!

specSelector:aSelector

    "sets the method selector of the resource spec"

    specSelector := aSelector

! !

!ResourceSpecEditor methodsFor:'aspects'!

aspectFor:aKey

    "returns the aspect for a aKey or nil"

    ^aspects at: aKey ifAbsent: [super aspectFor:aKey]

!

tabModel

    "returns the value holder for the tab selection"

    |holder|

    (holder := builder bindingAt:#tabModel) isNil ifTrue:[

        holder := AspectAdaptor new subject:self; forAspect:#tabSelection.

        builder aspectAt:#tabModel put:holder.

    ].

    ^ holder

!

valueOfEnableMovingIn

    "returns whether the selected item can move into next item as child; as value holder"

!

valueOfEnableMovingInAbove

    "returns whether the selected item can move into the previous item as child;

     as a value holder"

!

valueOfEnableMovingOut

    "returns whether the selected item can move out from its parent item; as value holder"

!

valueOfEnableMovingUpOrDown

    "returns whether the selected item can move up or down; as value holder"

! !

!ResourceSpecEditor methodsFor:'building'!

buildFromClass: aClass andSelector: aSelector

    ^ self loadFromClass: aClass andSelector: aSelector

!

buildFromResourceSpec: aResourceSpec

    "concrete subclass has to reimplement this method

     in order to build its resource spec from aResourceSpec"

    ^ self loadFromResourceSpec:aResourceSpec

!

loadFromClass: aClass andSelector: aSelector

    ^ self subclassResponsibility

!

loadFromResourceSpec: aResourceSpec

    "concrete subclass has to reimplement this method

     in order to build its resource spec from aResourceSpec"

    ^self subclassResponsibility

! !

!ResourceSpecEditor methodsFor:'change & update'!

update:something with:aParameter from:changedObject

    "one of my aspects has changed; update modified channel for the commit buttons"

    |enableCommitButtonsHolder|

    changedObject ~~ enableCommitButtonsHolder ifTrue:[ 

        enableCommitButtonsHolder value: true 

    ]

!

updateAllToolInstances

    "updates the channels of all other instances of my class"

    self allToolInstances do: [:inst| inst updateChannels]

!

updateChannels

    "updates my channels"

! !

!ResourceSpecEditor methodsFor:'help'!

defaultInfoLabel

    "returns the default label for the info bar"

    specClass isBehavior ifTrue:[

        (specClass respondsTo:specSelector) ifTrue:[

            ^ specClass name, ' >> ', specSelector

        ].

        specSelector isNil ifTrue:[

            ^ specClass name, ' >> ? (no selector defined)'

        ].

        ^ specClass name, ' >> ', specSelector, ' (not implemented)'

    ].

    ^ 'No class and selector defined.'

! !

!ResourceSpecEditor methodsFor:'initialization'!

initialize

    "initialize the flags and the aspects"

    super initialize.

    hasSaved     := modified := false.

    aspects      := IdentityDictionary new.

    tabSelection := 0.

    self class aspects do:

    [:aKey|

        |holder|

        aspects at:aKey put: (holder := ValueHolder new).

        holder addDependent: self

    ]

! !

!ResourceSpecEditor methodsFor:'private'!

askForItemModification

    "asks for resource item modification"

    |anythingChangedHolder anythingChanged answer|

    anythingChanged := anythingChangedHolder value.

    anythingChanged ifTrue:[          

"/        answer := ((YesNoBox title:'Resource item was modified!!\Save it?\' withCRs)        

"/                        noText:'No';

"/                        yesText:'Yes';

"/                        showAtPointer;

"/                        accepted). 

        answer := Dialog 

                        confirmWithCancel:(resources string:'Item was modified !!\Save it ?\' withCRs)

                        labels:(resources array:#('Cancel' 'No' 'Yes'))

                        default:3.

        answer isNil ifTrue:[

            ^ false

        ].

        answer ifTrue:[

            self accept

        ] ifFalse:[

            anythingChangedHolder value: false. 

            self clearModifiedFlag. 

            self clearModified.

        ].

    ].

    ^true

    "Modified: / 30.10.2001 / 18:38:34 / cg"

!

askForListModification

    "asks for resource modification"

    self modified ifTrue:

    [

        ((YesNoBox title:(resources string:'%1 spec was modified. Proceed?' with:self class resourceType asUppercaseFirst))        

            noText:(resources string:'Cancel');

            yesText:(resources string:'Discard Changes and Proceed');

            showAtPointer;

            accepted) ifFalse: [^ false].

        self clearModified

    ].

    ^ true

    "Modified: / 20.5.1998 / 03:40:26 / cg"

!

askForModification

    "asks first for item and then for resource modification"

    ^self askForItemModification and: [self askForListModification]

!

extractClassAndSelectorFrom:aString

    "extracts class and selector from a resource string. On success

     an association with the key a class and the selector as value

     is returned. Otherwise nil is returned

    "

    |words newClass newSel|

    aString size ~~ 0 ifTrue:[

        words := aString asCollectionOfWords.

        words size == 2 ifTrue:[

            newClass := self resolveName:(words first).

            (newClass isClass and:[newClass isLoaded]) ifTrue:[

                newSel := words last asSymbol.

                (newClass class includesSelector:newSel) ifTrue:[

                    ^ Association key:newClass value:newSel            

                ].

            ].

        ].

    ].

    ^ nil

!

updateHistory

    "updates the history, if there was loaded a resource spec"

    specClass notNil ifTrue:[

        self addHistoryEntryForClass:specClass selector:specSelector

    ]

!

xxresourceMessage:aString

    "extracts the specClass and the specSelector from aString "

    |msg cls|

    (aString notNil and:[self askForModification]) ifTrue:[            

        msg := aString asCollectionOfWords.

        (msg size == 2 

        and: [ (cls := self resolveName:(msg at:1)) notNil ])

        ifTrue:[

            specClass := cls.

            specSelector := (msg at: 2) asSymbol.

            ^true

        ]