"

 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:'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:[

            accept value:true.

            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"

!

openFor:anApplication spec: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"

    ^ self

        openFor:anApplication 

        interfaceSpec:aSpec

        withBindings:bindings

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

    "Created: / 20.5.1998 / 20:28:29 / cg"

!

openFrom:anInterfaceSpec

    "open the dialog from a given spec;

     return true if accepted, false if canceled"

    self allButOpenFrom:anInterfaceSpec.

    self openDialog.

    ^ accept value

    "Modified: 28.2.1997 / 16:40:36 / cg"

!

openInterface:aSymbol

    "open a standard interface.

     Redefined to return the accept value instead of the builder."

    super openInterfaceModal:aSymbol.

    ^ accept value.

    "Created: / 23.1.1998 / 18:19:57 / cg"

    "Modified: / 20.5.1998 / 20:21:28 / cg"

!

openSpec:aWindowSpec

    "open a window spec.

     Redefned to open modal and to return the accept value instead 

     of the builder."

    super openSpecModal:aWindowSpec.

    ^ accept value.

    "Modified: / 22.4.1998 / 11:59:05 / cg"

    "Created: / 20.5.1998 / 20:21:17 / cg"

!

openSpec:anInterfaceSpec withBindings:bindings

    "open the dialog with a given spec;

     The bindings argument is mandatory and provides aspect bindings for the

     dialog.

     Return true if accepted, false if canceled"

    ^ self

        openFor:self 

        interfaceSpec:anInterfaceSpec

        withBindings:bindings

!

postBuildWith:aBuilder

    "this is sent after the dialogs widgets have been created

     (but before the dialog is opened).

     If a postBuildBlock was set, evaluate it here."

    postBuildBlock notNil ifTrue:[

        postBuildBlock valueWithOptionalArgument:aBuilder

    ].

    super postBuildWith:aBuilder

    "Created: 18.10.1997 / 05:17:12 / cg"

!

postOpenWith:aBuilder

    "this is sent after the dialogs main window is opened.

     If a postOpenBlock was set, evaluate it here."

    postOpenBlock notNil ifTrue:[

        postOpenBlock valueWithOptionalArgument:aBuilder

    ].

    super postOpenWith:aBuilder

    "Created: 18.10.1997 / 05:15:48 / cg"

!

preBuildWith:aBuilder

    "this is sent before the dialogs widgets are created.

     If a preBuildBlock was set, evaluate it here."

    preBuildBlock notNil ifTrue:[

        preBuildBlock valueWithOptionalArgument:aBuilder

    ].

    super preBuildWith:aBuilder

    "Created: 18.10.1997 / 15:02:27 / cg"

!

preOpen

    "arrange for #closeAccept & #closeCancel to be invoked when

     either accept or close is triggered

     (usually the models of corresponding buttons)"

    accept onChangeSend:#closeAccept to:self.

    cancel onChangeSend:#closeCancel to:self.

    close  onChangeSend:#closeWindow to:self.

    "Modified: / 20.5.1998 / 20:49:26 / cg"

! !

!SimpleDialog methodsFor:'queries'!

defaultWindowType

    "SimpleDialogs come up modal, by default"

    ^ #dialog

    "Modified: 14.2.1997 / 22:17:20 / cg"

! !