"{ Package: 'jv:smallsense' }"

"{ NameSpace: SmallSense }"

EditSupport subclass:#SmalltalkEditSupport

	instanceVariableNames:'lastTypedKey0 lastTypedKey1 lastTypedKey2 lastTypedKey3'

	classVariableNames:''

	poolDictionaries:''

	category:'SmallSense-Smalltalk'

!

!SmalltalkEditSupport methodsFor:'accessing'!

language

    "superclass SmallSenseEditorSupport says that I am responsible to implement this method"

    ^SmalltalkLanguage instance

    "Modified: / 24-07-2013 / 23:46:42 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!SmalltalkEditSupport methodsFor:'accessing-classes'!

completionEngineClass

    ^ SmalltalkCompletionEngine

    "Created: / 02-10-2013 / 13:30:50 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

scannerClass

    "Returns a class to use for scanning lines. If nil, scanning is

     not supported and scanLine* methods will return an empty array."

    ^ Scanner

    "Created: / 22-10-2013 / 00:39:01 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!SmalltalkEditSupport methodsFor:'editing'!

insertElectricSnippet

    lastTypedKey0 == Character space ifTrue:[

        ^ self insertElectricSnippetAfterSpace

    ].

    lastTypedKey0 == $: ifTrue:[

        ^ self insertElectricSnippetAfterDoubleColon

    ].

    ^ false.

    "Created: / 22-10-2013 / 02:55:37 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

insertElectricSnippetAfterDoubleColon

    | tokens lastToken0 lastValue0 |

    tokens := self scanLineAtCursor.

    tokens isEmptyOrNil ifTrue:[ ^ false ].

    lastToken0 := tokens at: (tokens size - 3).

    lastToken0 = 'Error' ifTrue:[ ^ false ].

    (tokens last > service textView cursorCol) ifTrue:[ ^ false ].

    ((lastToken0 == #Identifier) and:[(service textView cursorCol - 1) == tokens last]) ifTrue:[

        lastValue0 := tokens at: tokens size - 2.

        tokens size > 4 ifTrue:[

            (#(#do #select #reject #detect #contains #allSatisfy #anySatisfy) includes: lastValue0) ifTrue:[

                | collectionName eachName space part1 part2 |

                space := RBFormatter spaceAfterKeywordSelector ifTrue:[' '] ifFalse:[''].

                eachName := 'each'.

                tokens size > 4 ifTrue:[

                    ((collectionName := tokens at: tokens size - 6) last = $s) ifTrue:[

                        (collectionName endsWith: 'ses') ifTrue:[

                            eachName := collectionName copyButLast: 2  

                        ] ifFalse:[

                            eachName := collectionName copyButLast: 1

                        ].

                    ].

                ].

                part1 := ':', space , '[:' , eachName , ' | '.

                part2 := ' ]'.

                self insertElectric: part1 , part2 advanceCursorBy: part1 size.

                ^ true.

            ]. 

            RBFormatter spaceAfterKeywordSelector ifTrue:[

                self insertElectric: ': '.

                ^ true.

            ]

        ].

    ].

    ^ false.

    "Created: / 22-10-2013 / 03:05:35 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 22-10-2013 / 12:00:14 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

insertElectricSnippetAfterSpace

    | tokens lastToken0 lastValue0 |

    tokens := self scanLineAtCursor.

    tokens isEmptyOrNil ifTrue:[ ^ false ].

    lastToken0 := tokens at: (tokens size - 3).

    lastToken0 = 'Error' ifTrue:[ ^ false ].

    (tokens last > service textView cursorCol) ifTrue:[ ^ false ].

    lastToken0 == #Keyword ifTrue:[

        lastValue0 := tokens at: tokens size - 2.

        tokens size > 4 ifTrue:[

            (#(#do: #select: #reject: #detect: #contains: #allSatisfy: #anySatisfy:) includes: lastValue0) ifTrue:[

                | collectionName eachName part1 part2 |

                eachName := 'each'.

                tokens size > 4 ifTrue:[

                    (collectionName := (tokens at: tokens size - 6) last = $s) ifTrue:[

                        (collectionName endsWith: 'ses') ifTrue:[

                            eachName := collectionName copyButLast: 2  

                        ] ifFalse:[

                            eachName := collectionName copyButLast: 1

                        ].

                    ].

                ].

                part1 := ' [:' , eachName , ' | '.

                part2 := ' ]'.

                self insertElectric: part1 , part2 advanceCursorBy: part1 size.

                ^ true.

            ]. 

        ]

    ].

    ^ false.

    "Created: / 22-10-2013 / 03:00:36 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 22-10-2013 / 12:00:07 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!SmalltalkEditSupport 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."

    view ~~ textView ifTrue:[ ^ false ].

    lastTypedKey3 := lastTypedKey2.

    lastTypedKey2 := lastTypedKey1.

    lastTypedKey1 := lastTypedKey0.

    lastTypedKey0 := key.

    key == #BackSpace ifTrue:[

        backspaceIsUndo ifTrue:[

             textView undo.

             backspaceIsUndo := false.

             ^ true.

        ].

    ].

    backspaceIsUndo := false.

    key == $^ ifTrue:[

        ^ self keyPressReturnToken

    ].

    key == #Return ifTrue: [

        ^ self keyPressReturn

    ].

    key == $: ifTrue: [

        ^ self keyPressDoubleColon.

    ].

    key == $= ifTrue: [

        ^ self keyPressEqual

    ].

    ^ super keyPress: key x:x y:y in: view

    "Created: / 07-03-2010 / 09:36:44 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 22-10-2013 / 11:09:45 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

keyPressDoubleColon

    ^ self insertElectricSnippetAfterDoubleColon

    "Created: / 22-10-2013 / 03:08:53 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

keyPressEqual

    | line |

    line := textView listAt:textView cursorLine.

    line isNil ifTrue:[ ^ false ].

    line := line string.

    line size > textView cursorCol ifTrue: [ ^ false ].

    line size < (textView cursorCol - 1) ifTrue: [ ^ false ].

    (line at: textView cursorCol - 1) == $: ifTrue: [

        self insertElectric:'= '.  

        ^ true

    ].

    ^ false

    "Created: / 22-10-2013 / 11:01:03 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

keyPressReturn

    line := textView listAt: textView cursorLine.

    line isNil ifTrue:[ ^ false ].

    line := line string.

    line size > textView cursorCol ifTrue: [ ^ false ].

    (line indexOfAny:'[|/') == 0 ifTrue:[ ^ false ].

    "/ Insert "/ at the beggining of the line if current line starts with "/

    (i ~~ 0 and:[ i < line size and:[(line at:i) == $" and:[(line at:i + 1) == $/]]]) ifTrue:[

        ^ true   

    ].

    ('[|' includes: lastTypedKey1) ifFalse:[ ^ false ].

    i := line size.

    [ (line at: i) isSeparator and:[i > 0] ] whileTrue:[ i := i - 1 ].

    i == 0 ifTrue:[ ^ false ].

    (line at: i) == $[ ifTrue:[

        self insertElectricBlockOpenedBy: nil closedBy: '].'.

        ^ true

    ].

    tokens := self tokensAtCursorLine.

    tokens isEmpty ifTrue:[ ^ false ].

    i := tokens size.

    t := tokens at: i.

    t == $[ ifTrue:[

        self insertElectricBlockOpenedBy: nil closedBy: '].'.

        ^ true

    ].

    t == $| ifTrue:[

        i := i - 1.

        [ i > 1 and:[ (tokens at: i) == #Identifier and:[ (tokens at: i - 1) == $: ]] ] whileTrue:[ i := i - 2 ].

        (i ~~ 0 and: [(tokens at: i) == $[]) ifTrue:[

            self insertElectricBlockOpenedBy: nil closedBy: '].'.

            ^ true

        ].

        i := tokens size  - 1.

        [ i > 0 and:[ (tokens at: i) == #Identifier ] ] whileTrue:[ i := i - 1 ].

        (i ~~ 0 and: [(tokens at: i) == $|]) ifTrue:[

            RBFormatter emptyLineAfterTemporaries ifTrue:[

                ^ true

            ]

        ]

    ].

    ^ false.

    "Created: / 25-07-2013 / 00:02:56 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

keyPressReturnToken

    RBFormatter spaceAfterReturnToken ifTrue:[

        self insertDo:[ 

            textView insertStringAtCursor:'^ ' 

        ].

        ^ true

    ].

    ^ false

    "Created: / 24-07-2013 / 23:59:37 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 17-09-2013 / 23:20:06 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!SmalltalkEditSupport methodsFor:'initialization'!

initializeForService: anEditService    

    super initializeForService: anEditService.

    service textView autoIndent:true.

    "Created: / 27-09-2013 / 13:22:48 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 03-10-2013 / 17:44:06 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!SmalltalkEditSupport methodsFor:'private'!

tokensAtCursorLine

    | scanner token |

    scanner := Scanner for: (service textView listAt: service textView cursorLine) string.

    ^ OrderedCollection streamContents:[:tokens |

        [ token := scanner nextToken.token ~~ #EOF ] whileTrue:[

            tokens nextPut: token.

        ].

    ].

    "Created: / 25-07-2013 / 00:07:27 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!SmalltalkEditSupport class methodsFor:'documentation'!

version_HG

    ^ '$Changeset: <not expanded> $'

! !