"{ Package: 'jv:smallsense' }"

"{ NameSpace: SmallSense }"

HierarchicalItem subclass:#PO

	instanceVariableNames:'label relevance context'

	classVariableNames:'IconWidth'

	poolDictionaries:''

	category:'SmallSense-Core-Interface-PO'

!

!PO class methodsFor:'initialization'!

initialize

    "Invoked at system start or when the class is dynamically loaded."

    "/ please change as required (and remove this comment)

    IconWidth := 16.

    "Modified: / 18-09-2013 / 00:13:07 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!PO class methodsFor:'Instance creation'!

forClass: aClass

    ^ ClassPO new initializeWithClass: aClass

    "Created: / 20-05-2014 / 09:56:07 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

forClass: aClass selector: aSymbol

    ^ MethodPO new initializeWithClass: aClass selector: aSymbol

    "Created: / 20-05-2014 / 10:31:52 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

forClasses: aCollection selector: aSymbol

    ^ MethodPO new initializeWithClasses: aCollection selector: aSymbol

    "Created: / 20-05-2014 / 10:33:43 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

forClasses: aCollection selector: aSymbol prefix: aString

    ^ aString notEmptyOrNil 

        ifTrue: [ MethodKeywordRestPO new initializeWithClasses: aCollection selector: aSymbol prefix: aString ]

        ifFalse:[ MethodPO new initializeWithClasses: aCollection selector: aSymbol ]

    "Created: / 20-05-2014 / 10:43:43 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

forPackage: package

    ^ PackagePO new initializeWithPackage: package

    "Created: / 19-06-2014 / 12:01:36 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

subject: anObject

    <resource: #obsolete>

    ^self new subject: anObject

    "Created: / 06-04-2011 / 21:01:15 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!PO methodsFor:'accessing'!

context

    ^ context

!

context:something

    something notNil ifTrue:[

        context := something.

    ].

    "Modified: / 17-10-2013 / 01:16:07 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

cursorColumnAfterCompleteForLanguage: language

    "Answers a cursor column after completion. The number returned

     is relative to the start of the text being replaced"

    ^ (self stringToCompleteForLanguage: language) size

    "Created: / 03-10-2013 / 16:49:51 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 04-10-2013 / 07:48:47 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

hint

    "Return a hint text to be displayed in gray after a label

     (if there's space). If nil is returned, no hint is shown"

    ^ nil

    "Created: / 20-05-2014 / 11:52:45 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

icon

    ^nil

    "Created: / 04-04-2011 / 17:25:41 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

label

    "Return a text to be displayed. The label may be cached

     `label` instvar."

    ^ self subclassResponsibility

    "Created: / 07-04-2011 / 09:55:40 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 20-05-2014 / 11:30:21 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

name

    <resource: #obsolete>

    self obsoleteMethodWarning.

    ^ self label

    "Modified: / 20-05-2014 / 11:36:55 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

name:aString

    <resource: #obsolete>

    self shouldNeverBeSent

    "Modified: / 20-05-2014 / 11:36:06 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

relevance

    "Return relevance value, i.e., how much likely is that this

     is what user wants to complete.

     Relevance is an integer between 1 (least relevant) and 

     100 (most relevant)"

    ^ relevance ? 1

    "Modified: / 18-01-2014 / 22:41:37 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

relevance: anInteger

    "Set the relevance value, i.e., how much likely is that this

     is what user wants to complete.

     Relevance is an integer between 1 (least relevant) and 

     100 (most relevant)"

    ^ relevance := anInteger.

    "Modified: / 18-01-2014 / 22:41:55 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

stringAlreadyWritten

    "Answers a string already written in the textview"    

    ^ context wordBeforeCursor

    "Created: / 20-10-2013 / 00:14:44 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

stringToComplete

    ^ self stringToCompleteForLanguage: context language.

    "Created: / 05-04-2011 / 16:48:42 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 31-03-2014 / 23:10:13 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

stringToCompleteForLanguage: aProgrammingLanguage

    "Answers a string to complete"

    ^ self subclassResponsibility

    "Created: / 02-10-2013 / 02:32:43 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 20-05-2014 / 11:32:24 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

subject:anObject

    <resource: #obsolete>

    self error: 'Should no longer be sent'.

    "Modified: / 20-05-2014 / 10:16:09 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!PO methodsFor:'completion'!

insert

    "Insert given completion item at cursor position"

    | po stringToComplete stringAlreadyWritten stringToInsert textView |

    po := self.

    textView := context codeView.

    stringToComplete := po stringToCompleteForLanguage: context language.

    stringAlreadyWritten := self stringAlreadyWritten.

    stringToInsert := stringToComplete copyFrom: (stringAlreadyWritten size + 1).

    textView isCodeView2 ifTrue:[textView := textView textView].

    (stringToComplete startsWith: stringAlreadyWritten) ifTrue:[

        context support 

                electricInsert:stringToInsert

                ignoreKeystrokes:stringToInsert.

        textView cursorCol: textView cursorCol - stringToComplete size + (po cursorColumnAfterCompleteForLanguage: context language).

    ] ifFalse:[

       | startCol endCol |

       textView undoableDo:[

            endCol := textView cursorCol - 1.

            startCol := textView cursorCol - stringAlreadyWritten size.

            textView insertStringAtCursor: stringToComplete.

            textView deleteFromLine:textView cursorLine col: startCol toLine:textView cursorLine col:endCol.

        ].

        textView cursorCol: startCol + (po cursorColumnAfterCompleteForLanguage: context language).

    ].

    "Created: / 17-10-2013 / 01:08:13 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 16-02-2014 / 00:02:56 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!PO methodsFor:'displaying'!

displayLabel:lab h:lH on:gc x:x y:y0 h:h

    | cx hint hintW cy |

    cx := x.

"/    iconOrNil := self icon.

"/    iconOrNil notNil ifTrue:[

"/        iconOrNil displayOn: aGC x: cx y: y + (h / 2) - (iconOrNil height / 2).

"/    ].

"/    cx := cx + IconWidth.

    "/ Display label

    super displayLabel:lab h:lH on:gc x:cx y:y0 h:h.

    "/ Display hint

    hint := self hint.

    hint notNil ifTrue:[ 

        cx := cx + (lab widthOn: gc).

        hintW := hint widthOn: gc.

        "/ Check whether there's enougn space fit the hint

        (gc width) > (cx + hintW + 10"spacing") ifFalse:[ 

            hint isString ifFalse:[ 

                "/ There's nothing to do for non-strings

                ^ self 

            ].

            "/ Try to shorten the text.

            hint := hint contractAtEndTo: ((gc width - cx - 10) // ('m' widthOn: gc)).

            hint size < 6 ifTrue:[ 

                "/ To short to be meaningfull, give up.

                ^ self.

            ].

            hintW := hint widthOn: gc.

            "/ Check again if it can fit...

            (gc width) > (cx + hintW + 10"spacing") ifFalse:[ 

                "/ Give up.

                ^ self.

            ]

        ].

        cx := gc width - hintW - 3"right padding".

        cy := y0 - ((lH + 1 - h) // 2).    

        (hint isString and:[hint isText not]) ifTrue:[ 

            | savPaint |

            cy := cy + (hint ascentOn:gc).   

            savPaint := gc paint.

            gc paint: (Color gray: 40).

            hint displayOn:gc x: cx y:cy.  

            gc paint: savPaint

        ] ifFalse:[ 

            hint isText ifTrue:[ 

                cy := cy + (hint ascentOn:gc).   

            ].

            hint displayOn:gc x: cx y:cy.  

        ].

    ].

    "Created: / 24-07-2013 / 00:22:46 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 19-06-2014 / 15:18:00 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

displayOn:aGC x:x y:y h:h 

    | cx iconOrNil |

    cx := x.

    parent isNil ifTrue:[

        iconOrNil := self icon.

        iconOrNil notNil ifTrue:[

            iconOrNil displayOn: aGC x: cx y: y + (h / 2) - (iconOrNil height / 2).

        ].

        cx := cx + IconWidth.

    ].

    super displayOn:aGC x:cx y:y h:h

    "Created: / 28-04-2014 / 00:16:33 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

displayString

    ^ self label

    "Created: / 20-04-2012 / 18:19:46 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 20-05-2014 / 11:34:14 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!PO methodsFor:'printing & storing'!

printOn:aStream

    "append a printed representation if the receiver to the argument, aStream"

    super printOn:aStream.

    aStream nextPut:$(.

    self label.

    aStream nextPut:$).

    "Modified: / 20-05-2014 / 11:18:29 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!PO methodsFor:'queries'!

startsWith: prefix

    ^self stringToComplete startsWith: prefix

    "Created: / 26-11-2011 / 19:25:57 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!PO methodsFor:'testing'!

isSmallSenseClassPO

    ^ false

!

isSmallSenseConstantPO

    ^ false

!

isSmallSenseMethodPO

    ^ false

!

isSmallSenseSnippetPO

    ^ false

!

isSmallSenseVariablePO

    ^ false

! !

!PO class methodsFor:'documentation'!

version_HG

    ^ '$Changeset: <not expanded> $'

!

version_SVN

    ^ '$Id: SmallSense__PO.st,v 1.2 2014/02/12 14:49:29 sr Exp $'

! !

PO initialize!