"{ Package: 'jv:smallsense' }"

"{ NameSpace: SmallSense }"

Object subclass:#EditSupport
	instanceVariableNames:'service textView backspaceIsUndo completionController'
	classVariableNames:''
	poolDictionaries:''
	category:'SmallSense-Core-Services'
!


!EditSupport class methodsFor:'instance creation'!

forLanguage: aProgrammingLanguage
    aProgrammingLanguage notNil ifTrue:[
        aProgrammingLanguage isSmalltalk ifTrue:[
            ^ SmalltalkEditSupport new
        ].
        (aProgrammingLanguage askFor: #isJava) ifTrue:[    
            ^ JavaEditSupport new
        ].
        (aProgrammingLanguage askFor: #isGroovy) ifTrue:[    
            ^ GroovyEditSupport new
        ]  
    ].

    ^GenericEditSupport new.

    "Created: / 24-07-2013 / 23:20:31 / Jan Vrany <jan.vrany@fit.cvut.cz>"
    "Modified: / 04-10-2013 / 08:41:09 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!EditSupport methodsFor:'accessing'!

language
    ^ self subclassResponsibility.

    "Created: / 24-07-2013 / 23:44:51 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

service
    ^ service
! !

!EditSupport methodsFor:'accessing-classes'!

completionEngineClass
    "Returns a code completion engine class or nil, of 
     no completion is supported"

    ^ nil

    "Created: / 03-10-2013 / 17:43:47 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!EditSupport methodsFor:'editing'!

insertDo: aBlock
    textView hasSelection ifTrue:[
        textView undoableDo:[
            textView deleteSelection
        ].
    ].
    textView undoableDo: [
         aBlock value.
    ].
    backspaceIsUndo := true.

    "Created: / 17-09-2013 / 23:15:46 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

insertElectricBlockOpenedBy: openText closedBy: closeText
    | line col indent |

    indent := self indentAtCursorLine.

    textView undoableDo:[
        textView insertStringAtCursor: (openText ? '') , Character cr , Character cr, (String new:indent withAll:Character space) , closeText , Character cr.
        line := textView cursorLine - 1.
        col := textView cursorCol  + 3.
        textView cursorLine: line col: col.
    ].

    "Created: / 25-07-2013 / 10:41:50 / Jan Vrany <jan.vrany@fit.cvut.cz>"
    "Modified: / 04-08-2013 / 02:15:30 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!EditSupport methodsFor:'event handling'!

keyPress: key x:x y:y in: view
    "Handles an event in given view (a subview of codeView).
     If the method returns true, the event will not be processed
     by the view."


    ^false

    "Created: / 24-07-2013 / 23:31:46 / Jan Vrany <jan.vrany@fit.cvut.cz>"
    "Modified: / 27-09-2013 / 23:53:03 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!EditSupport methodsFor:'initialization'!

initializeCompletion
    self completionEngineClass  notNil ifTrue:[
        completionController := CompletionController for: service textView.
        completionController support: self.
        service textView completionSupport: completionController.
    ].

    "Created: / 27-09-2013 / 13:20:30 / Jan Vrany <jan.vrany@fit.cvut.cz>"
    "Modified: / 03-10-2013 / 17:44:32 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

initializeForService:aSmallSenseService
    service := aSmallSenseService.
    textView := aSmallSenseService textView.
    backspaceIsUndo := false.
    self initializeCompletion.

    "Created: / 27-09-2013 / 13:19:20 / Jan Vrany <jan.vrany@fit.cvut.cz>"
    "Modified: / 03-10-2013 / 17:44:15 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!EditSupport methodsFor:'private'!

indentAtCursorLine
    | line |

    line := service textView listAt: service textView cursorLine.
    ^ line isNil ifTrue:[
        service textView cursorCol - 1.
    ] ifFalse:[
        line indexOfNonSeparator - 1.
    ]

    "Created: / 25-07-2013 / 00:13:33 / Jan Vrany <jan.vrany@fit.cvut.cz>"
    "Modified: / 04-08-2013 / 02:13:47 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

wordBeforeCursor
    | currentLine wordStart wordEnd |

    currentLine := textView list at: textView cursorLine.
    currentLine isNil ifTrue:[ ^ '' ].
    wordEnd := textView cursorCol - 1.
    wordEnd > currentLine size ifTrue:[ ^ '' ].
    wordEnd ~~ 0 ifTrue:[
        wordStart := wordEnd.
        [ wordStart > 0 and:[(currentLine at: wordStart) isAlphaNumeric] ] whileTrue:[
            wordStart := wordStart - 1.
        ].
        wordStart := wordStart + 1.
        wordStart <= wordEnd ifTrue:[
            ^ currentLine copyFrom: wordStart to: wordEnd.
        ].
    ].
    ^ ''

    "Created: / 27-09-2013 / 15:53:40 / Jan Vrany <jan.vrany@fit.cvut.cz>"
    "Modified: / 17-10-2013 / 00:48:05 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!EditSupport methodsFor:'private-completion'!

computeCompletion
    | completionEngineClass codeView result |

    completionEngineClass := self completionEngineClass.
    completionEngineClass isNil ifTrue: [ ^ nil ].

    codeView := service codeView.
    UserInformation 
        handle: [:ex | 
            codeView showInfo: (ex messageText).
            ex proceed.
        ]
        do: [
            result := completionEngineClass new completeFor: codeView 
        ].
    ^ result.

    "Created: / 27-09-2013 / 13:21:52 / Jan Vrany <jan.vrany@fit.cvut.cz>"
    "Modified: / 02-10-2013 / 13:31:54 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!EditSupport class methodsFor:'documentation'!

version_HG

    ^ '$Changeset: <not expanded> $'
! !