"

 COPYRIGHT (c) 2010 by Jan Vrany, SWING Research Group. CTU in Prague

	      All Rights Reserved

Permission is hereby granted, free of charge, to any person

obtaining a copy of this software and associated documentation

files (the 'Software'), to deal in the Software without

restriction, including without limitation the rights to use,

copy, modify, merge, publish, distribute, sublicense, and/or sell

copies of the Software, and to permit persons to whom the

Software is furnished to do so, subject to the following

conditions:

The above copyright notice and this permission notice shall be

included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,

EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

OTHER DEALINGS IN THE SOFTWARE.

"

"{ Package: 'stx:libtool' }"

"{ NameSpace: Tools }"

CodeViewService subclass:#CodeHighlightingService

	instanceVariableNames:'job done modified'

	classVariableNames:''

	poolDictionaries:''

	category:'Interface-CodeView'

!

!CodeHighlightingService class methodsFor:'documentation'!

copyright

"

 COPYRIGHT (c) 2010 by Jan Vrany, SWING Research Group. CTU in Prague

	      All Rights Reserved

Permission is hereby granted, free of charge, to any person

obtaining a copy of this software and associated documentation

files (the 'Software'), to deal in the Software without

restriction, including without limitation the rights to use,

copy, modify, merge, publish, distribute, sublicense, and/or sell

copies of the Software, and to permit persons to whom the

Software is furnished to do so, subject to the following

conditions:

The above copyright notice and this permission notice shall be

included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,

EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

OTHER DEALINGS IN THE SOFTWARE.

"

! !

!CodeHighlightingService class methodsFor:'accessing'!

label

    "Answers short label - for UI"

    ^'Syntax Highlighting'

    "Created: / 07-03-2010 / 14:00:21 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!CodeHighlightingService methodsFor:'accessing'!

syntaxHighlighter

    | app lang highlighter |

    "First, ask application..."

    app := codeView application.

    app notNil ifTrue:[

        | mthd class |

        mthd := codeView methodHolder value.

        class := codeView classHolder value.

        (mthd notNil and:[app respondsTo: #syntaxHighlighterForMethod:]) ifTrue:[

            highlighter := app syntaxHighlighterForMethod:mthd.

        ] ifFalse:[

            (class notNil and:[app respondsTo: #syntaxHighlighterForClass:]) ifTrue:[                        

                highlighter := app syntaxHighlighterForClass: class.

            ] ifFalse:[

                (class notNil and:[app respondsTo: #syntaxHighlighter]) ifTrue:[                        

                    highlighter := app syntaxHighlighterClass.

                ].

            ].

        ]

    ].

    "App did not provide any highlighter..."

    highlighter isNil ifTrue:[        

                ifNil:[nil]

                ifNotNil:[lang syntaxHighlighterClass].

    ].

    "HACK!!!!!!"

    highlighter == SyntaxHighlighter ifTrue:[

        highlighter := SyntaxHighlighter2

    ].

    ^ highlighter

    "Created: / 05-08-2011 / 10:48:55 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 26-09-2011 / 15:50:10 / cg"

!

syntaxHighlighters

    | highlighters |

    highlighters := OrderedCollection new: 4.

    codeView services do:[:service|

        | highlighter |

        highlighter := service syntaxHighlighter.        

        highlighter notNil ifTrue:[

            "HACK, since AbstractSyntaxHighlighter overwrite

             emphasis instead of adding it..."

            (highlighter isKindOf: AbstractSyntaxHighlighter class) ifTrue:[

                highlighters addFirst: highlighter                    

            ] ifFalse:[

                highlighters add: highlighter

            ].

        ]

    ].

    ^highlighters

    "Created: / 05-08-2011 / 10:49:17 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!CodeHighlightingService methodsFor:'change & update'!

update: aspect with: param from: sender

    textView notNil ifTrue:[

        "/sender == textView modifiedChannel ifTrue:[^self codeChanged: false].

        sender == textView model ifTrue:[^self codeChanged: true].

        (sender == textView and:[aspect == #sizeOfContents]) ifTrue:[^self codeChanged: true].

    ].

    codeView notNil ifTrue:[

        sender == codeView languageHolder ifTrue:[^self codeChanged: true].

        sender == codeView classHolder ifTrue:[^self codeChanged: true].

    ].

    super update: aspect with: param from: sender

    "Created: / 06-03-2010 / 19:38:07 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 13-09-2011 / 12:00:29 / cg"

    "Modified: / 16-09-2011 / 17:30:16 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!CodeHighlightingService methodsFor:'event handling'!

linesDeletedFrom: start to: end

    self codeChanged: true

    "Created: / 06-07-2011 / 17:14:36 / jv"

    "Created: / 16-09-2011 / 15:18:24 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

linesInsertedFrom: start to: end

    self codeChanged: true

    "Created: / 06-07-2011 / 17:14:36 / jv"

    "Created: / 16-09-2011 / 15:18:21 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

linesModifiedFrom: start to: end

    self codeChanged: true

    "Created: / 06-07-2011 / 17:14:36 / jv"

    "Created: / 16-09-2011 / 15:15:14 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!CodeHighlightingService methodsFor:'initialization'!

initialize

    job := (Smalltalk at:#BackgroundJob)

                named: 'Syntax Highlighting Job'

                on:[self syntaxHighlight: true].

    "Created: / 29-07-2011 / 10:31:03 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 03-08-2011 / 16:47:53 / cg"

    "Modified (format): / 26-09-2011 / 15:39:56 / cg"

! !

!CodeHighlightingService methodsFor:'private'!

codeChanged: force

    (force or:[codeView textView modified]) ifTrue:[

        self syntaxHighlight

    ].

    "Modified: / 29-07-2011 / 11:07:56 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 22-08-2011 / 13:51:53 / cg"

    "Modified (format): / 05-09-2011 / 05:06:40 / cg"

!

setHighlightedCode:newCode elements: elements

    "the background synhighlighter has generated new colored text,

     with highlighted syntax.

     If there have been no modifications in the meantime, install it."

    |firstShown lastShown cursorWasOn anyChange newLines l replaceAction list|

    "textView" modified ifTrue:[

        "/ new input arrived in the meantime

        ^ self

    ].

    done  ifFalse:[

        "/ another coloring process has already been started.

        "/ ignore this (leftover) code.

        ^ self

    ].

    firstShown := textView firstLineShown.

    lastShown := textView lastLineShown.

    replaceAction := [:lNr :line |

            |oldLine|

            oldLine :=  list at:lNr ifAbsent:nil.

            oldLine notNil ifTrue:[

                line notNil ifTrue:[

                    "/ this check is needed - there is a race

                    "/ when the text is converted. This detects the

                    "/ resulting error.

                    "/ Certainly a kludge.

                    oldLine string = line string ifTrue:[

                        oldLine emphasis ~= line emphasis ifTrue:[

                            textView modifiedChannel removeDependent:self.

                            list at:lNr put:line.

                            textView modifiedChannel addDependent:self.

                            (lNr between:firstShown and:lastShown) ifTrue:[

                                anyChange ifFalse:[

                                    anyChange := true.

                                    cursorWasOn := textView hideCursor

                                ].

                                textView redrawLine:lNr

                            ]

                        ]

                    ]

                ]

            ]

        ].

    anyChange := false.

    newLines := newCode asStringCollection.

    list := textView list.

    list isNil ifTrue:[

        textView list:newLines.

    ] ifFalse:[

        "/ the cursor line first - that's where your eyes are ...

        (l := textView cursorLine) notNil ifTrue:[

            l <= newLines size ifTrue:[

                replaceAction value:l value:(newLines at:l)

            ]

        ].

        newLines keysAndValuesDo:replaceAction.

        anyChange ifTrue:[

            cursorWasOn ifTrue:[

                textView showCursor

            ]

        ]

    ].

    codeView syntaxElements: elements

    "Modified: / 09-10-2006 / 11:50:17 / cg"

    "Created: / 14-02-2010 / 16:10:21 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified (format): / 21-08-2011 / 09:38:22 / cg"

    "Modified: / 16-09-2011 / 17:33:31 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

showInfo: aString

    codeView showInfo: aString

    "Created: / 06-03-2010 / 19:34:51 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

syntaxHighlight

    |highlighters prio |

    (highlighters := self syntaxHighlighters) isEmptyOrNil ifTrue:[

        "No higlighter, nothing to do"

        ^self

    ].

    "/ this clobbers the codeViews modified state; therefore, we have to remember

    "/ this info somewhere ...

    codeView browser ifNotNil:[

        textView modified ifTrue:[

            codeView browser navigationState realModifiedState: true

        ].

        textView modifiedChannel setValue:false.

    ].

    job scheduled ifTrue:[

        job running ifFalse:[

            "/ process already created, but did not get a change to start yet;

            ^ self

        ] ifTrue:[

            job stop.

        ]

    ].

    prio := Processor userBackgroundPriority - 1.

    textView shown ifFalse:[

        prio := prio - 1 max:1

    ].

    job startWithPriority: prio.

    "Modified: / 07-07-2011 / 12:26:12 / Jan Vrany <jan.vrant@fit.cvut,cz>"

    "Created: / 29-07-2011 / 11:07:42 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 26-09-2011 / 15:40:23 / cg"

!

syntaxHighlight: delayed

    |oldCode oldCodeList newCode elements cls mthd highlighterClasses|

    done := false.

    modified := false.

    codeView syntaxElements: nil.

    codeView syntaxElementSelection: nil.

    highlighterClasses := self syntaxHighlighters.

    cls := codeView klass.

    (cls notNil and:[cls isObsolete]) ifTrue:[

        cls isMeta ifTrue:[

            cls := (Smalltalk at:cls theNonMetaclass name) class

        ] ifFalse:[

            cls := Smalltalk at:cls name

        ].

    ].

    mthd := codeView methodHolder value.

    "textView" modified ifFalse:[

        oldCodeList := textView list copy.

        "textView" modified ifFalse:[

            oldCodeList isNil ifFalse:[

                oldCode := oldCodeList asStringWithoutEmphasis.

                "textView" modified ifFalse:[

                    Screen currentScreenQuerySignal answer:codeView device

                    do:[

                        Parser::ParseError handle:[:ex |

                            |errMsg|

                            errMsg := ex description asStringCollection first asString.

                            "/ Transcript topView raiseDeiconified.

                            "/ Transcript showCR:'ParseError: ', ex description.

"/ self halt.

                            "/ self showInfo:(errMsg colorizeAllWith:Color red).

                            newCode := nil.

                        ] do:[

                            elements := SortedCollection new.

                            newCode := oldCode asText.

                            codeView codeAspect == #method ifTrue:[

                                highlighterClasses do:[:e|newCode := e formatMethod:mthd source:newCode in:cls using: nil elementsInto: elements].

                            ] ifFalse:[

                                codeView codeAspect == #expression ifTrue:[

                                    highlighterClasses do:[:e|newCode := e formatExpression:newCode in:cls elementsInto: elements].

                                ] ifFalse:[

                                    codeView codeAspect == #classDefinition ifTrue:[

                                        highlighterClasses do:[:e|newCode := e formatClassDefinition:newCode in:cls elementsInto: elements].

                                    ]

                                ].

                            ].

                        ]

                    ].

                    newCode notNil ifTrue:[

                        "textView" modified ifFalse:[

                            newCode ~= oldCodeList ifTrue:[

                                newCode := newCode asStringCollection.

                                "textView" modified ifFalse:[

                                    done := true.

                                    textView notNil ifTrue:[

                                        "/ must add this event - and not been interrupted

                                        "/ by any arriving key-event.

                                        "/ self showInfo:nil.

                                        delayed ifTrue:[

                                            codeView sensor

                                                pushUserEvent:#setHighlightedCode:elements:

                                                for:self

                                                withArguments:(Array with:newCode with: elements).

                                                "/self delayedUpdateBufferLabelWithCheckIfModified

                                        ] ifFalse:[

                                            textView contents: newCode.

                                        ]

                                    ]

                                ]

                            ].

                        ]

                    ]

                ]

            ]

        ]

    ]

    "Created: / 29-07-2011 / 11:01:53 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 22-08-2011 / 14:17:47 / cg"

    "Modified: / 16-09-2011 / 17:01:39 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!CodeHighlightingService methodsFor:'registering'!

registerIn: aCodeView

    super registerIn: aCodeView.

    textView addDependent: self.

    "Created: / 27-07-2011 / 13:25:03 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!CodeHighlightingService class methodsFor:'documentation'!

version

!

version_CVS

!

version_SVN

    ^ '§Id: Tools__CodeHighlightingService.st 7715 2011-04-10 16:32:58Z vranyj1 §'

! !