"

 COPYRIGHT (c) 1996 by eXept Software AG

              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:libview2' }"

ApplicationModel subclass:#SimpleDialog

	instanceVariableNames:'accept cancel close escapeIsCancel postBuildBlock postOpenBlock

		preBuildBlock closeAllowedChannel'

	classVariableNames:''

	poolDictionaries:''

	category:'Interface-Framework'

!

!SimpleDialog class methodsFor:'documentation'!

copyright

"

 COPYRIGHT (c) 1996 by eXept Software AG

              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

"

    Use SimpleDialog to specify Dialogs with a windowSpec built by the GUI Builder.

    Notice: this class was implemented using protocol information

    from alpha testers and PD code - it may not be complete or compatible to

    the corresponding ST-80 class. If you encounter any incompatibilities,

    please forward a note to the ST/X team.

    [author:]

        Claus Gittinger

    [see also:]

        StandardSystemView

        WindowGroup DeviceWorkstation DialogBox

"

! !

!SimpleDialog class methodsFor:'queries'!

isVisualStartable

    "return true, if this application can be started via #open.

     (to allow start of a change browser via double-click in the browser)"

    self == SimpleDialog ifTrue:[^false].

    ^super isVisualStartable

! !

!SimpleDialog methodsFor:'RefactoringBrowser'!

addMultiList: model lines: maxLines validation: valid

	| height layout field grid font scrollW max fullMax |

	height := builder window displayBox height.

	layout := LayoutFrame new.

	layout leftOffset: 16 topOffset: height.

	layout rightFraction: 1 offset: -16.

	field := SequenceViewSpec model: model menu: nil layout: layout.

	field multipleSelections: true.

	builder add: field.

	builder wrapper widget controller setDispatcher:

		(UIDispatcher new doubleClick: [valid value ifTrue: [accept value: true]]).

	"builder wrapper widget setValidTargetIndex: model selectionIndex."

	scrollW := builder wrapper decorator scrollerComponent.

	scrollW preferredBoundsBlock:

				[:sw | | rect |

				rect := sw component preferredBounds

						translatedBy: sw translation.

				rect height: maxLines*sw scrollGrid y.

				rect].

	font := builder wrapper widget textStyle defaultFont.

	font := Screen default defaultFontPolicy findFont: font.

	max := model list inject: 0 into: [:i :str | i max: str size].

		"Instead of exactly measuring every string, we

		assume that $o will be a fairly representative

		character.  Actually, $o will probably be wider

		than the average, but this will usually be OK."

	max := (font widthOf: $o) * max.

		"Don't let the dialog get too wide."

	fullMax := 350.

	max > fullMax

		ifTrue:

			[max := fullMax.

			builder wrapper decorator useHorizontalScrollBar.

			builder wrapper widget measureWidth: true].

	grid := builder wrapper preferredBounds height.

	layout bottomOffset: height+grid.

	self addGap: grid.

	self minWidth: max + 48.

	^builder wrapper

!

chooseMultiple: messageString fromList: list values: listValues buttons: buttons values: buttonValues lines: maxLines cancel: cancelBlock 

	^self

		chooseMultiple: messageString

		fromList: list

		values: listValues

		buttons: buttons

		values: buttonValues

		lines: maxLines

		cancel: cancelBlock

		for: nil

!

chooseMultiple: messageString fromList: list values: listValues buttons: buttons values: buttonValues lines: maxLines cancel: cancelBlock for: aVisualOrNil

	"Ask the user a question.  Let the user pick from a row of buttons made up

	to match the labels collection.  Return the response from the corresponding

	item from the values collection."

	"aVisualOrNil, if not nil, may be either a VisualPart or a

	ScheduledWindow.  It controls the look and feel and color choices

	used by the dialog, and supplies the dialog's master window, which

	is used by some window systems to create a visual connection between

	the dialog and the window that created it."

	"SimpleDialog new

		chooseMultiple: 'Which one do you want?'

		fromList: #('first' 'second' 'third' 'fourth') values: #(1 2 3 4)

		buttons: #() values: #()

		lines: 8

		cancel: [#noChoice]

		for: Dialog defaultParentWindow"

	| result spec okValue sequence wrappers listW |

	wrappers := OrderedCollection new.

	result := ValueHolder new.

	sequence := MultiSelectionInList new.

	sequence list: list.

	spec := (self class interfaceSpecFor: #emptySpec).

	okValue := Object new.

	self initializeBuilderFor: aVisualOrNil.

	builder add: spec window.

	builder add: spec component.

	self initializeWindowFor: aVisualOrNil.

	self setInitialGap.

	self addMessage: messageString centered: false.

	self addGap: 8.

	listW := self

			addMultiList: sequence

			lines: (maxLines min: list size+2)

			validation: [true].

	self addGap: 4.

	wrappers add: (self addOK: [sequence selectionIndex ~= 0]).

	buttons isEmpty

		ifFalse:

			[self addGap: 4.

			wrappers add: (self addDivider).

			self addGap: 4.

			wrappers add:

					(self addLabels: buttons

						values: buttonValues

						default: okValue

						storeInto: result

						takeKeyboard: true

						equalize: true)].

	self addGap: 6.

	self bottomAlignLowerEdge: listW.

	self bottomAlign: wrappers.

	self preOpen.

	builder openDialogWithExtent: builder window displayBox extent.

	^accept value

		ifTrue: [sequence selectionIndexes collect: [:each | listValues at: each]]

		ifFalse: [cancel value ifTrue: [cancelBlock value] ifFalse: [result value]]

! !

!SimpleDialog methodsFor:'accessing'!

accept

    "return the valueholder which gets set by the accept button.

     Also, when this valueHolder gets a true stuffed into it, the

     dialog is closed."

    accept isNil ifTrue:[

        accept := false asValue.

    ].

    ^ accept

    "Modified: / 20.5.1998 / 20:51:05 / cg"

!

accepted

    "after the box has closed:

         return true if accepted, false if canceled"

    ^ self accept value

!

bindings

    "return my builders bindings"

    ^ builder bindings

    "Modified: / 20.5.1998 / 20:51:15 / cg"

!

cancel

    "return the valueholder which gets set by the cancel button.

     Also, when this valueHolder gets a true stuffed into it, the

     dialog is closed."

    cancel isNil ifTrue:[

        cancel := false asValue.

    ].

    ^ cancel

    "Modified: / 20.5.1998 / 20:51:02 / cg"

!

closeAllowedChannel

    "return the value-provider which controls if close is allowed.

     This is initialized to true."

    ^ closeAllowedChannel

    "Created: / 20.5.1998 / 21:52:32 / cg"

    "Modified: / 20.5.1998 / 21:53:18 / cg"

!

closeAllowedChannel:aValueHolderOrBlock

    "set a value-provider which controls if close is allowed."

    ^ closeAllowedChannel

    "Created: / 20.5.1998 / 21:52:53 / cg"

!

closeChannel

    "return the closeChannel; If a true is stuffed into this valueHolder,

     I will close myself."

    ^ close

    "Modified: / 20.5.1998 / 20:52:29 / cg"

!

escapeIsCancel

    "return the escapeIsCancel setting"

    ^ escapeIsCancel

    "Modified: / 20.5.1998 / 20:52:44 / cg"

!

escapeIsCancel:something

    "set/clear the escapeIsCancel option.

     If on, an ESC-key will be treated like a cancel action."

    escapeIsCancel := something.

    "Modified: / 20.5.1998 / 20:53:23 / cg"

!

postBuildBlock:something

    "set postBuildBlock; if non-nil, this is evaluated after the build process"

    postBuildBlock := something.

    "Modified: / 20.5.1998 / 20:54:06 / cg"

!

postOpenBlock:something

    "set the postBuildBlock; if non-nil, this is evaluated after the view is opened"

    postOpenBlock := something.

    "Modified: / 20.5.1998 / 20:54:23 / cg"

!

preBuildBlock:something

    "set the preBuildBlock; if non-nil, this is evaluated before the view is constructed"

    preBuildBlock := something.

    "Modified: / 20.5.1998 / 20:54:41 / cg"

!

source:anApplication

    "define the application which provides resources, aspects etc."

    builder source:anApplication.

    masterApplication isNil ifTrue:[

        anApplication ~~ self ifTrue:[

            masterApplication := anApplication

        ]

    ].

    "Modified: / 8.9.1998 / 01:46:06 / cg"

! !

!SimpleDialog methodsFor:'accessing-window'!

minWidth:nPixels

    |w box |

    w := builder window width.

    builder window width:(w max:nPixels).

"/    box := builder window displayBox.

"/    box width: (box width max: nPixels).

"/    builder window displayBox: box

    "Modified: 3.3.1997 / 21:56:27 / cg"

! !

!SimpleDialog methodsFor:'events'!

closeAccept

    "accept was pressed. close the dialog"

    self requestForWindowClose ifTrue:[

        builder keyboardProcessor requestGlobalAutoAccept ifTrue:[

            self closeWindow

        ]

    ]

    "Modified: 17.6.1997 / 14:10:23 / cg"

!

closeCancel

    "cancel was pressed. close the dialog"

    self requestForWindowClose ifTrue:[

        self closeWindow

    ]

    "Modified: 17.6.1997 / 14:10:29 / cg"

!

closeWindow

    "close the dialog"

    |c|

    c := self closeChannel.

    c retractInterestsFor:self.

    c value:true.

    "/ must destroy - otherwise there is no #release to

    "/ the  controllers (onChangeSend-dependency problem)

    builder window destroy. "/ hide

    "Modified: / 24.8.1998 / 17:45:56 / cg"

!

requestForWindowClose

    "the dialog is about to be closed - this method is invoked and may

     return false to suppress the close.

     Here the value of closeAllowedChannel is returned, which is

     set to true initially.

     You may redefined this in a special dialog, and/or provide a boolean

     valueHolder or a boolean block via the #closeAllowedChannel: method."

    ^ closeAllowedChannel value

    "Modified: / 20.5.1998 / 21:52:25 / cg"

! !

!SimpleDialog methodsFor:'forced actions'!

doAccept

    "force accept"

    self accept value:true

    "Created: / 18.10.1997 / 05:18:09 / cg"

    "Modified: / 20.5.1998 / 21:53:35 / cg"

!

doCancel

    "force cancel"

    self cancel value:true

    "Created: / 18.10.1997 / 05:18:22 / cg"

    "Modified: / 20.5.1998 / 21:53:40 / cg"

! !

!SimpleDialog methodsFor:'initialization'!

initialize

    accept := (ValueHolder with:false).

    close := (ValueHolder with:false).

    cancel := (ValueHolder with:false).

    self createBuilder.

    builder aspectAt:#accept put:accept.

    builder aspectAt:#close put:close.

    builder aspectAt:#cancel put:cancel.

    escapeIsCancel := true.

    closeAllowedChannel := true

    "Modified: / 19.6.1998 / 03:35:48 / cg"

!

initializeBuilderFor:aView 

    aView notNil ifTrue:[

        builder window:aView.

    ]

    "Created: 3.3.1997 / 16:23:04 / cg"

!

initializeWindowFor:aView

    |v|

    (v := aView) isNil ifTrue:[

        v := ModalBox new.

    ].

    builder setupWindowFor:v.

    "Modified: 3.3.1997 / 20:39:46 / cg"

! !

!SimpleDialog methodsFor:'interface opening'!

allButOpenFrom:aSpec

    "create my views but do not open the main window"

    super allButOpenFrom:aSpec.

    self preOpen

!

openFor:anApplication interface:aSelector

    "open the dialog for some appModel from a given spec;

     Return true if accepted, false if canceled"

    ^ self openFor:anApplication interface:aSelector withBindings:nil

    "Modified: 28.2.1997 / 16:22:08 / cg"

!

openFor:anApplication interface:aSelector withBindings:bindings

    "open the dialog for some appModel from a given specSymbol;

     the application must provide an interfaceSpec for that symbol.

     The bindings argument may provide overwriting bindings for the

     dialog.

     Return true if accepted, false if canceled"

    ^ self

        openFor:anApplication 

        interfaceSpec:(anApplication class interfaceSpecFor:aSelector)

        withBindings:bindings

    "Modified: 18.10.1997 / 04:43:13 / cg"

!

openFor:anApplication interfaceSpec:aSpec withBindings:bindings

    "open the dialog for some appModel from a given spec;

     the bindings argument may provide overwriting bindings for the

     dialog.

     Return true if accepted, false if canceled"

    |app|

    builder addBindings:bindings.

    (app := anApplication) isNil ifTrue:[

        app := ApplicationModel new

    ].

    self source:app.

    ^ self openFrom:aSpec

    "Modified: 28.2.1997 / 16:22:00 / cg"

    "Created: 18.10.1997 / 04:41:29 / cg"

!