"

 COPYRIGHT (c) 1989 by Claus Gittinger

	      All Rights Reserved

 This software is furnished under a license and may be used

 only in accordance with the terms of that license and with the

 inclusion of the above copyright notice.   This software may not

 be provided or otherwise made available to, or used by, any

 other person.  No title to or ownership of the software is

 hereby transferred.

"

"{ Package: 'stx:libwidg' }"

ListView subclass:#TextView

	instanceVariableNames:'selectionStartLine selectionStartCol selectionEndLine

		selectionEndCol clickPos clickStartLine clickStartCol clickLine

		clickCol clickCount expandingTop wordStartCol wordStartLine

		wordEndCol wordEndLine selectionFgColor selectionBgColor

		selectStyle directoryForFileDialog defaultFileNameForFileDialog

		externalEncoding contentsWasSaved lastSearchPattern

		lastSearchIgnoredCase lastSearchDirection

		parenthesisSpecification dropSource dragIsActive'

	classVariableNames:'DefaultViewBackground DefaultSelectionForegroundColor

		DefaultSelectionBackgroundColor

		DefaultAlternativeSelectionForegroundColor

		DefaultAlternativeSelectionBackgroundColor MatchDelayTime

		WordSelectCatchesBlanks ST80Selections LastSearchPatterns

		NumRememberedSearchPatterns LastSearchIgnoredCase

		DefaultParenthesisSpecification'

	poolDictionaries:''

	category:'Views-Text'

!

!TextView class methodsFor:'documentation'!

copyright

"

 COPYRIGHT (c) 1989 by Claus Gittinger

	      All Rights Reserved

 This software is furnished under a license and may be used

 only in accordance with the terms of that license and with the

 inclusion of the above copyright notice.   This software may not

 be provided or otherwise made available to, or used by, any

 other person.  No title to or ownership of the software is

 hereby transferred.

"

!

documentation

"

    a view for readOnly text - this class adds selections to a simple list.

    The text is not editable and there is no cursor.

    Use TextViews for readonly text, EditTextView for editable text.

    Please read the historic notice in the ListView class.

    [Instance variables:]

      selectionStartLine      <Number>                the line of the selection start (or nil)

      selectionStartCol       <Number>                the col of the selection start

      selectionEndLine        <Number>                the line of the selection end

      selectionEndCol         <Number>                the col of the selection end

      clickStartLine          <Number>                temporary - remember where select operation started

      clickStartCol           <Number>                temporary

      clickLine               <Number>                temporary

      clickCol                <Number>                temporary

      clickCount              <Number>                temporary

      expandingTop            <Boolean>               temporary - for expandSelection

      selectionFgColor        <Color>                 color used to draw selections

      selectionBgColor        <Color>                 color used to draw selections

      selectStyle             <Symbol>                how words are selected

      directoryForFileDialog  <nil|pathName>          directory where save dialog should start

      contentsWasSaved        <Boolean>               set to true, whenever saved in a file

      externalEncoding        <Symbol|nil>            external encoding, used when text is saved to

                                                      a file. Usually something like

                                                      #jis7, #euc, #sjis etc.

                                                      (currently only passed down from the

                                                       fileBrowser)

      dropSource              <DropSource>            drag operation descriptor or nil (dragging disabled)

      dragIsActive            <Boolean>               true, drag operation is activated  

    [class variables:]

        ST80Selections        <Boolean>               enables ST80 style doubleclick behavior

                                                      (right after opening parenthesis, right before

                                                       closing parenthesis, at begin of a line

                                                       at begin of text)

    [StyleSheet parameters:]

      textView.background                       defaults to viewBackground

      textView.ViewFont                         defaults to textFont

      text.st80Selections                       st80 behavior (click on char after parent or quote)

      text.selectionForegroundColor             defaults to textBackgroundColor

      text.selectionBackgroundColor             defaults to textForegroundColor

      text.alternativeSelectionForegroundColor  pasted text (i.e. paste will not replace)

                                                defaults to selectionForegroundColor

      text.alternativeSelectionBackgroundColor  pasted text (i.e. paste will not replace)

                                                defaults to selectionBackgroundColor

    [author:]

        Claus Gittinger

    [see also:]

        EditTextView CodeView Workspace

"

!

examples

"

    although textViews (and instances of subclasses) are mostly used

    as components (in the fileBrowser, the browser, the launcher etc.),

    they may also be opened as a textEditor;

    open a (readonly) textView on some information text:

							[exBegin]

	TextView 

	    openWith:'read this' 

	    title:'demonstration'

							[exEnd]

    the same, but open it modal:

							[exBegin]

	TextView 

	    openModalWith:'read this first' 

	    title:'demonstration'

							[exEnd]

    open it modal (but editable) on some text:

    (must accept before closing)

    This is somewhat kludgy - when closed, the view has already

    nilled its link to the model. Therefore, the accept must be

    done 'manually' below.

    However, usually an applicationModel is installed as the

    editor-topViews application. This would get a closeRequest,

    where it could handle things.

							[exBegin]

	|m textView|

	m := 'read this first' asValue.

	textView := EditTextView openModalOnModel:m.

	textView modified ifTrue:[

	    (self confirm:'text was not accepted - do it now ?')

	    ifTrue:[

		m value:textView contents

	    ]

	].

	Transcript showCR:m value.

							[exEnd]

    open a textEditor on some file:

							[exBegin]

	EditTextView openOn:'Makefile'

							[exEnd]

"

! !

!TextView class methodsFor:'instance creation'!

on:aModel aspect:aspect change:change menu:menu initialSelection:initial

    "for ST-80 compatibility"

    ^ (self new) 

	on:aModel 

	aspect:aspect

	list:aspect

	change:change 

	menu:menu

	initialSelection:initial

! !

!TextView class methodsFor:'class initialization'!

initialize

    DefaultParenthesisSpecification isNil ifTrue:[

        DefaultParenthesisSpecification := IdentityDictionary new.       

        DefaultParenthesisSpecification at:#open        put:#( $( $[ ${ "$> $<") .

        DefaultParenthesisSpecification at:#close       put:#( $) $] $} "$> $<").

        DefaultParenthesisSpecification at:#ignore      put:#( $' $" '$[' '$]' '${' '$)' ).

        DefaultParenthesisSpecification at:#eolComment  put:'"/'.     "/ sigh - must be 2 characters

    ].

! !

!TextView class methodsFor:'defaults'!

defaultIcon

    "return the default icon if started as a topView"

    <resource: #style (#ICON #ICON_FILE)>

    |nm i|

    i := self classResources at:'ICON' default:nil.

    i isNil ifTrue:[

        nm := ClassResources at:'ICON_FILE' default:'Editor.xbm'.

        i := Smalltalk imageFromFileNamed:nm forClass:self.

    ].

    i notNil ifTrue:[

        i := i onDevice:Display

    ].

    ^ i

    "Modified: 18.4.1997 / 15:18:06 / cg"

!

defaultMenuMessage

    "This message is the default yo be sent to the menuHolder to get a menu"

    ^ #editMenu

    "Created: 3.1.1997 / 01:52:21 / stefan"

!

defaultSelectionBackgroundColor

    "return the default selection background color"

    ^DefaultSelectionBackgroundColor

!

defaultSelectionForegroundColor

    "return the default selection foreground color"

    ^DefaultSelectionForegroundColor

!

defaultViewBackgroundColor

    "return the default view background"

    ^DefaultViewBackground

!

st80SelectMode

    ^ ST80Selections

    "Modified: / 6.1.1999 / 14:19:26 / cg"

!

st80SelectMode:aBoolean

    ST80Selections := aBoolean

    "Created: / 7.1.1999 / 13:35:24 / cg"

!

updateStyleCache

    "extract values from the styleSheet and cache them in class variables"

    <resource: #style (#'textView.background'

                       #'text.selectionForegroundColor' #'text.selectionBackgroundColor'

                       #'text.alternativeSelectionForegroundColor' #'text.alternativeSelectionBackgroundColor'

                       #'textView.font' #'text.wordSelectCatchesBlanks'

                       #'text.st80Selections')>

    DefaultViewBackground := StyleSheet colorAt:'textView.background' default:White.

    DefaultSelectionForegroundColor := StyleSheet colorAt:'text.selectionForegroundColor'.

    DefaultSelectionBackgroundColor := StyleSheet colorAt:'text.selectionBackgroundColor'.

    DefaultFont := StyleSheet fontAt:'textView.font'.

    MatchDelayTime := 0.6.

    WordSelectCatchesBlanks := StyleSheet at:'text.wordSelectCatchesBlanks' default:false.

    ST80Selections := StyleSheet at:'text.st80Selections' default:false.

    "Modified: / 31.10.1997 / 13:17:16 / cg"

! !

!TextView class methodsFor:'interface specs'!

searchDialogSpec

    "This resource specification was automatically generated

     by the UIPainter of ST/X."

    "Do not manually edit this!! If it is corrupted,

     the UIPainter may not be able to read the specification."

    "

     UIPainter new openOnClass:TextView andSelector:#searchDialogSpec

    "

    <resource: #canvas>

    ^ 

     #(#FullSpec

        #name: #searchDialogSpec

        #window: 

       #(#WindowSpec

          #label: 'String search'

          #name: 'String search'

          #min: #(#Point 10 10)

          #max: #(#Point 1280 1024)

          #bounds: #(#Rectangle 12 22 311 138)

        )

        #component: 

       #(#SpecCollection

          #collection: #(

           #(#HorizontalPanelViewSpec

              #name: 'horizontalPanelView'

              #layout: #(#LayoutFrame 0 0.0 -26 1.0 0 1.0 0 1.0)

              #level: 0

              #horizontalLayout: #fitSpace

              #verticalLayout: #center

              #horizontalSpace: 3

              #verticalSpace: 3

              #ignoreInvisibleComponents: true

              #reverseOrderIfOKAtLeft: true

              #component: 

             #(#SpecCollection

                #collection: #(

                 #(#ActionButtonSpec

                    #label: 'Cancel'

                    #name: 'cancelButton'

                    #level: 2

                    #translateLabel: true

                    #tabable: true

                    #model: #cancel

                    #extent: #(#Point 95 21)

                  )

                 #(#ActionButtonSpec

                    #label: 'Prev'

                    #name: 'prevButton'

                    #level: 2

                    #translateLabel: true

                    #tabable: true

                    #model: #prevAction

                    #extent: #(#Point 95 21)

                  )

                 #(#ActionButtonSpec

                    #label: 'Next'

                    #name: 'nextButton'

                    #level: 2

                    #borderWidth: 1

                    #translateLabel: true

                    #tabable: true

                    #model: #nextAction

                    #isDefault: true

                    #extent: #(#Point 95 21)

                  )

                 )

              )

            )

           #(#LabelSpec

              #label: 'SearchPattern:'

              #name: 'label'

              #layout: #(#LayoutFrame 1 0.0 3 0 -1 1.0 20 0)

              #level: 0

              #translateLabel: true

              #adjust: #left

            )

           #(#ComboBoxSpec

              #name: 'patternComboBox'

              #layout: #(#LayoutFrame 3 0.0 26 0 -3 1.0 48 0)

              #tabable: true

              #model: #searchPattern

              #immediateAccept: false

              #acceptOnLeave: true

              #acceptOnReturn: true

              #acceptOnTab: true

              #acceptOnLostFocus: true

              #acceptOnPointerLeave: false

              #autoSelectInitialText: true

              #comboList: #patternList

            )

           #(#CheckBoxSpec

              #label: 'Ignore case'

              #name: 'ignoreCaseCheckBox'

              #layout: #(#LayoutFrame 3 0.0 54 0 -3 1.0 77 0)

              #level: 0

              #tabable: true

              #model: #ignoreCase

              #translateLabel: true

            )

           )

        )

      )

! !

!TextView class methodsFor:'startup'!

open

    "start an empty TextView"

    ^ self openWith:nil

!

openModalOnModel:aModel

    "start a textView on a model; return the textView"

    |textView|

    textView := self setupForModel:aModel.

    textView topView openModal.

    ^ textView

    "Created: 14.2.1997 / 15:24:12 / cg"

!

openModalWith:aString

    "start a textView with aString as initial contents"

    ^ self openModalWith:aString title:nil 

    "

     TextView openModalWith:'some text'

     EditTextView openModalWith:'some text'

    "

    "Created: 14.2.1997 / 15:19:04 / cg"

!

openModalWith:aString title:aTitle

    "start a textView with aString as initial contents. Return the textView."

    |textView|

    textView := self setupWith:aString title:aTitle.

    textView topView openModal.

    ^ textView

    "

     TextView openModalWith:'some text' title:'testing'

     EditTextView openModalWith:'some text' title:'testing'

    "

    "Modified: 9.9.1996 / 19:32:29 / cg"

    "Created: 14.2.1997 / 15:19:18 / cg"

!

openOn:aFileName

    "start a textView on a file; return the textView"

    |textView|

    textView := self setupForFile:aFileName.

    textView topView open.

    ^ textView

    "

     TextView openOn:'../../doc/overview.doc'

     EditTextView openOn:'../../doc/overview.doc'

    "

    "Modified: 14.2.1997 / 15:21:51 / cg"

!

openOnModel:aModel

    "start a textView on a model; return the textView"

    |textView|

    textView := self setupForModel:aModel.

    textView topView open.

    ^ textView

    "Created: 14.2.1997 / 15:23:36 / cg"

!

openWith:aStringOrStringCollection

    "start a textView with aStringOrStringCollection as initial contents"

    ^ self openWith:aStringOrStringCollection title:nil 

    "

     TextView openWith:'some text'

     EditTextView openWith:'some text'

    "

    "Created: 10.12.1995 / 17:41:32 / cg"

    "Modified: 5.3.1997 / 15:37:19 / cg"