"

 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:#CodeNavigationService

	instanceVariableNames:'selectorEmphasis variableEmphasis currentEmphasis linesToRedraw'

	classVariableNames:'DefaultVariableEmphasis DefaultSelectorEmphasis'

	poolDictionaries:''

	category:'Interface-CodeView'

!

!CodeNavigationService 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.

"

! !

!CodeNavigationService class methodsFor:'accessing'!

label

    "Answers short label - for UI"

    ^'Semi-modal Code Navigation'

    "Created: / 07-03-2010 / 14:00:43 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

requiredServices

    ^#(#'Tools::CodeHighlightingService')

    "Created: / 27-07-2011 / 11:40:56 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!CodeNavigationService class methodsFor:'accessing - defaults'!

defaultSelectorEmphasis

    DefaultSelectorEmphasis isNil ifTrue:[

        ^ Array with:(#backgroundColor -> (UserPreferences current selectorBackgroundColorForNavigationService))

    ].

    ^ DefaultSelectorEmphasis

    "Modified: / 21-08-2011 / 09:58:18 / cg"

!

defaultVariableEmphasis

    DefaultVariableEmphasis isNil ifTrue:[

        ^ Array with:(#backgroundColor -> (UserPreferences current variableBackgroundColorForNavigationService))

    ].

    ^ DefaultVariableEmphasis

    "Created: / 25-06-2010 / 13:56:43 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 21-08-2011 / 11:04:20 / cg"

! !

!CodeNavigationService methodsFor:'change & update'!

update: aspect with: param from: sender

    sender == textView modifiedChannel ifTrue:[

        codeView reallyModified ifTrue:[

            "/ no longer highlight - the info is wrong anyway !!

            self highlightClear.

        ].

    ].

    "JV: I changed 'halt' to 'breakPoint: #cg'"

    "Created: / 22-08-2011 / 16:22:19 / cg"

    "Modified: / 25-08-2011 / 15:10:28 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 05-09-2011 / 05:15:42 / cg"

! !

!CodeNavigationService methodsFor:'code services'!

browseClass:class 

    self browser isNil ifTrue:[ ^ NewSystemBrowser browseClass:class ].

    (UserPreferences current alwaysOpenNewTabWhenCtrlClick 

        or:[ self browser navigationState modified ]) 

            ifTrue:[

                self browser 

                    spawnFullBrowserInClass:class

                    selector:nil

                    in:#newBuffer

            ]

            ifFalse:[ self browser switchToClass:class ]

    "Created: / 15-02-2010 / 09:36:50 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 25-07-2010 / 11:00:26 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 21-08-2011 / 10:07:30 / cg"

!

browser

    ^codeView browserHolder value

    "Created: / 06-03-2010 / 21:14:51 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!CodeNavigationService methodsFor:'event handling'!

button1Press

    |element|

    (element := codeView syntaxElementSelection) notNil ifTrue:[

        element type == #selector ifTrue:[self button1PressForSelector: element value. ^true].

        element type == #class    ifTrue:[self browseClass:element value. ^true].

    ].

    ^ false

    "Created: / 14-02-2010 / 18:43:03 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 06-03-2010 / 21:11:30 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 18-11-2011 / 14:58:02 / cg"

!

button1PressForSelector: selector

    | impls menu |

    impls := codeView implementorsOf: selector.

    "/ impls size = 1 ifTrue:[^codeView browseMethod: impls anyOne].

    menu := codeView implementorsMenu: impls selector: selector.

    self highlightClear.

    menu showAtPointer.

    "Created: / 14-02-2010 / 18:50:13 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 30-06-2011 / 19:34:50 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 07-07-2011 / 17:16:23 / jv"

    "Modified: / 21-08-2011 / 11:06:08 / cg"

!

button2Press

    | element |

    (element := codeView syntaxElementSelection) notNil ifTrue:[

        element type == #selector ifTrue:[self button2PressForSelector: element value. ^ true].

    ].

    ^ false

    "Created: / 14-02-2010 / 18:43:04 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 17-06-2011 / 08:58:34 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

button2PressForSelector: selector

    | senders menu |

    senders := codeView sendersOf: selector.

    "/ senders size = 1 ifTrue:[ codeView browseMethod: senders anyOne. ^ self].

    menu := codeView sendersMenu: senders selector: selector.

    self highlightClear.

    menu showAtPointer.

    "Created: / 14-02-2010 / 18:50:13 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 30-06-2011 / 19:34:43 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 21-08-2011 / 11:34:49 / cg"

!

buttonMotion:button 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 and:[ textView sensor metaDown ]) ifTrue:[

        self highlightElementAtX:x y:y.

        ^ true

    ].

    ^ false

    "Created: / 06-03-2010 / 20:40:37 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified (format): / 21-08-2011 / 10:07:15 / cg"

!

buttonPress: button 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:[

        textView isQuickMenuModifierPressed ifTrue:[

            button == 1      ifTrue: [^self button1Press].

            button == #paste ifTrue: [^self button2Press].   

            button == 2      ifTrue: [^self button2Press]

        ] ifFalse:[

            button == 1 ifTrue:[

                self highlightVariableAtX:x y:y.

            ]

        ]

    ].

    ^false

    "Created: / 06-03-2010 / 21:12:26 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 25-06-2010 / 14:53:36 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified (format): / 21-08-2011 / 10:06:54 / cg"

!

isQuickMenuModifierPressed

    UserPreferences current codeView2QuickSendersAndImplementorsOnControl ifTrue:[

        ^ textView sensor ctrlDown

    ].

    ^ textView sensor metaDown

!

isQuickMenuModifierReleased

    UserPreferences current codeView2QuickSendersAndImplementorsOnControl ifTrue:[

        ^ textView sensor ctrlDown not

    ].

    ^ textView sensor metaDown not

!

keyPress:key x:x y:y in:view 

    "Handles an event in given view (a subview of codeView).

     If the method returns true, it has eaten the event and it will not be processed

     by the view."

    <resource: #keyboard (#Control_L #Ctrl 

                          #CursorRight #CursorDown #CursorLeft #CursorUp)>

    |ev p|

    (view == textView) ifTrue:[

        "/ ("ctrlDown" "key == #'Control_L' or:[ key == #Ctrl ]") ifTrue:[

        (textView isQuickMenuModifierPressed) ifTrue:[

            "/ because it is delegated, the position is not correct

            ev := WindowGroup lastEventQuerySignal query.

            p := view device translatePoint:(ev x @ ev y) fromView:ev view toView:view.

            view sensor 

                pushUserEvent:#highlightElementAtX:y: 

                for: self 

                withArguments:{p x. p y.}.

            ^ false "/ true. -- no, dont eat the key

        ].

"/        codeView reallyModified "textView modified" ifTrue:[

"/            self highlightClear. 

"/            codeView syntaxElements: nil.

"/            ^ false

"/        ].

         (key == #CursorRight

            or:[key == #CursorDown

            or:[key == #CursorLeft

            or:[key == #CursorUp]]]) ifTrue:[   

            view sensor pushUserEvent:#highlightVariableAtCursor for:self .

        ] ifFalse:[

            view sensor pushUserEvent:#highlightClear for:self .

        ]

    ].

    ^ false

    "Created: / 06-03-2010 / 20:50:45 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 05-09-2011 / 05:17:30 / cg"

    "Modified: / 27-09-2011 / 19:24:13 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

keyRelease: key x:x y:y in: view

    "Handles an event in given view (a subview of codeView).

     If the method returns true, it has eaten the event and it will not be processed

     by the view."

    |ev p|

    (view == textView and:[textView isQuickMenuModifierReleased]) ifTrue:[

        "/    (view == textView and:[key == #'Control_L' or:[key == #Ctrl]]) ifTrue:[

        "/ because it is delegated, the position is not correct

        ev := WindowGroup lastEventQuerySignal query.

        p := view device translatePoint:(ev x @ ev y) fromView:ev view toView:view.

        self highlightClear. 

"/        view sensor pushUserEvent:#highlightClear for:self. 

        ^ false "/ true -- do not eat the event

    ].

    ^ false

    "Created: / 06-03-2010 / 21:03:59 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 21-08-2011 / 11:32:40 / cg"

!

linesDeletedFrom: start to: end

    self highlightClear

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

    "Created: / 16-09-2011 / 15:39:33 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

linesInsertedFrom: start to: end

    self highlightClear

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

    "Created: / 16-09-2011 / 15:39:30 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

linesModifiedFrom: start to: end

    self highlightClear

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

    "Created: / 16-09-2011 / 15:19:52 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!CodeNavigationService methodsFor:'initialization'!

initialize

    super initialize.

    selectorEmphasis := self class defaultSelectorEmphasis.

    variableEmphasis := self class defaultVariableEmphasis.

    linesToRedraw := OrderedCollection new.

    "Created: / 25-06-2010 / 14:05:09 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!CodeNavigationService methodsFor:'private'!

elementAtCursor

    ^self elementAtLine: textView cursorLine col: textView cursorCol - 1

    "Created: / 25-06-2010 / 14:39:14 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

elementAtLine:line col:colArg 

    |characterPosition syntaxElements index element col|

    "/ if beyond end of line, do not advance into next line

    col := colArg min:(textView listAt:line) size.

    characterPosition := textView characterPositionOfLine:line col:col.

    syntaxElements := codeView syntaxElements.

    syntaxElements isEmptyOrNil ifTrue:[

        ^ nil.

    ].

    index := syntaxElements indexForInserting:characterPosition.

    index > syntaxElements size ifTrue:[^nil].

    element := syntaxElements at:index ifAbsent:nil.

    element notNil ifTrue:[

        (characterPosition between: element start - 1 and: element stop) ifTrue:[^element].

    ].

    ^nil

    "Created: / 25-06-2010 / 14:40:03 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 21-08-2011 / 11:03:29 / cg"

    "Modified: / 16-09-2011 / 17:04:06 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

elementAtX:x y:y 

    |visibleLine line col|

    codeView syntaxElements isNil ifTrue:[^nil].

    visibleLine := textView visibleLineOfY:y.

    col := textView colOfX:x inVisibleLine:visibleLine.

    line := textView visibleLineToAbsoluteLine:visibleLine.

    ^self elementAtLine:line col:col

    "Created: / 25-06-2010 / 14:52:39 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 01-08-2010 / 08:50:18 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 21-08-2011 / 10:26:08 / cg"

!

foo

|characterPosition index element |

characterPosition := 1

    "Created: / 21-08-2011 / 10:48:05 / cg"

!

highlighEmphasisFor: element

    element isNil ifTrue:[^nil].

    element isSelector ifTrue:[^selectorEmphasis].

    element isVariable ifTrue:[^variableEmphasis].

    element isSelf     ifTrue:[^variableEmphasis].

    ^nil

    "Created: / 25-06-2010 / 13:54:42 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 18-11-2011 / 14:58:05 / cg"

!

highlightClear

    ^self highlightClear: true.

    "Modified: / 26-12-2007 / 12:28:05 / janfrog"

    "Created: / 25-06-2010 / 14:15:58 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 08-07-2011 / 08:50:45 / cg"

    "Modified: / 20-07-2011 / 18:52:38 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

highlightClear: redraw

    codeView syntaxElementSelection == nil ifTrue:[ ^ self ].

    textView list isNil ifTrue:[ ^ self ].

    textView list withIndexDo:[:line :lineNo | 

        line isText ifTrue:[ 

            (line hasEmphasis: currentEmphasis) ifTrue:[

                line emphasisAllRemove:currentEmphasis.

                linesToRedraw add: lineNo.

            ]

        ] 

    ].

    codeView syntaxElementSelection:nil.

    redraw ifTrue:[self redrawLines].

    "Modified: / 26-12-2007 / 12:28:05 / janfrog"

    "Created: / 20-07-2011 / 18:52:19 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 18-11-2011 / 14:58:08 / cg"

!

highlightElement:element 

    |e|

    codeView syntaxElementSelection == element ifTrue:[ ^ self ]. "/ no change

    codeView syntaxElementSelection notNil ifTrue:[

        self highlightClear: false.

    ].

    currentEmphasis := self highlighEmphasisFor:element.

    element notNil ifTrue:[ 

        codeView syntaxElementSelection:element.

        e := element firstElementInChain.

        [ e notNil ] whileTrue:[ 

            self highlightWithoutClearFrom:e start to:e stop.

            e := e nextElement 

        ].

    ].

    self redrawLines.

    "Created: / 14-02-2010 / 16:18:36 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 20-07-2011 / 18:52:46 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 21-08-2011 / 10:22:58 / cg"

!

highlightElementAtCursor

    self highlightElementAtLine: textView cursorLine col: textView cursorCol

    "Created: / 14-02-2010 / 16:17:40 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 06-03-2010 / 19:59:18 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

highlightElementAtLine:line col:col 

    |characterPosition syntaxElements index element|

    characterPosition := textView characterPositionOfLine:line col:col.

    syntaxElements := codeView syntaxElements.

    syntaxElements isEmptyOrNil ifTrue:[self highlightElement:nil. ^ self].