581 lines
24 KiB
Scheme
581 lines
24 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
|
;;; Copyright © 2018 Mathieu Othacehe <m.othacehe@gmail.com>
|
|
;;; Copyright © 2019 Ludovic Courtès <ludo@gnu.org>
|
|
;;;
|
|
;;; This file is part of GNU Guix.
|
|
;;;
|
|
;;; GNU Guix is free software; you can redistribute it and/or modify it
|
|
;;; under the terms of the GNU General Public License as published by
|
|
;;; the Free Software Foundation; either version 3 of the License, or (at
|
|
;;; your option) any later version.
|
|
;;;
|
|
;;; GNU Guix is distributed in the hope that it will be useful, but
|
|
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
;;; GNU General Public License for more details.
|
|
;;;
|
|
;;; You should have received a copy of the GNU General Public License
|
|
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
(define-module (gnu installer newt page)
|
|
#:use-module (gnu installer utils)
|
|
#:use-module (gnu installer newt utils)
|
|
#:use-module (guix i18n)
|
|
#:use-module (ice-9 i18n)
|
|
#:use-module (ice-9 match)
|
|
#:use-module (ice-9 receive)
|
|
#:use-module (srfi srfi-1)
|
|
#:use-module (srfi srfi-26)
|
|
#:use-module (newt)
|
|
#:export (draw-info-page
|
|
draw-connecting-page
|
|
run-input-page
|
|
run-error-page
|
|
run-confirmation-page
|
|
run-listbox-selection-page
|
|
run-scale-page
|
|
run-checkbox-tree-page
|
|
run-file-textbox-page))
|
|
|
|
;;; Commentary:
|
|
;;;
|
|
;;; Some helpers around guile-newt to draw or run generic pages. The
|
|
;;; difference between 'draw' and 'run' terms comes from newt library. A page
|
|
;;; is drawn when the form it contains does not expect any user
|
|
;;; interaction. In that case, it is necessary to call (newt-refresh) to force
|
|
;;; the page to be displayed. When a form is 'run', it is blocked waiting for
|
|
;;; any action from the user (press a button, input some text, ...).
|
|
;;;
|
|
;;; Code:
|
|
|
|
(define (draw-info-page text title)
|
|
"Draw an informative page with the given TEXT as content. Set the title of
|
|
this page to TITLE."
|
|
(let* ((text-box
|
|
(make-reflowed-textbox -1 -1 text 40
|
|
#:flags FLAG-BORDER))
|
|
(grid (make-grid 1 1))
|
|
(form (make-form)))
|
|
(set-grid-field grid 0 0 GRID-ELEMENT-COMPONENT text-box)
|
|
(add-component-to-form form text-box)
|
|
(make-wrapped-grid-window grid title)
|
|
(draw-form form)
|
|
;; This call is imperative, otherwise the form won't be displayed. See the
|
|
;; explanation in the above commentary.
|
|
(newt-refresh)
|
|
form))
|
|
|
|
(define (draw-connecting-page service-name)
|
|
"Draw a page to indicate a connection in in progress."
|
|
(draw-info-page
|
|
(format #f (G_ "Connecting to ~a, please wait.") service-name)
|
|
(G_ "Connection in progress")))
|
|
|
|
(define* (run-input-page text title
|
|
#:key
|
|
(allow-empty-input? #f)
|
|
(default-text #f)
|
|
(input-field-width 40)
|
|
(input-flags 0))
|
|
"Run a page to prompt user for an input. The given TEXT will be displayed
|
|
above the input field. The page title is set to TITLE. Unless
|
|
allow-empty-input? is set to #t, an error page will be displayed if the user
|
|
enters an empty input. INPUT-FLAGS is a bitwise-or'd set of flags for the
|
|
input box, such as FLAG-PASSWORD."
|
|
(let* ((text-box
|
|
(make-reflowed-textbox -1 -1 text
|
|
input-field-width
|
|
#:flags FLAG-BORDER))
|
|
(grid (make-grid 1 3))
|
|
(input-entry (make-entry -1 -1 20
|
|
#:flags input-flags))
|
|
(ok-button (make-button -1 -1 (G_ "OK")))
|
|
(form (make-form)))
|
|
|
|
(when default-text
|
|
(set-entry-text input-entry default-text))
|
|
|
|
(set-grid-field grid 0 0 GRID-ELEMENT-COMPONENT text-box)
|
|
(set-grid-field grid 0 1 GRID-ELEMENT-COMPONENT input-entry
|
|
#:pad-top 1)
|
|
(set-grid-field grid 0 2 GRID-ELEMENT-COMPONENT ok-button
|
|
#:pad-top 1)
|
|
|
|
(add-components-to-form form text-box input-entry ok-button)
|
|
(make-wrapped-grid-window grid title)
|
|
(let ((error-page (lambda ()
|
|
(run-error-page (G_ "Please enter a non empty input.")
|
|
(G_ "Empty input")))))
|
|
(let loop ()
|
|
(receive (exit-reason argument)
|
|
(run-form form)
|
|
(let ((input (entry-value input-entry)))
|
|
(if (and (not allow-empty-input?)
|
|
(eq? exit-reason 'exit-component)
|
|
(string=? input ""))
|
|
(begin
|
|
;; Display the error page.
|
|
(error-page)
|
|
;; Set the focus back to the input input field.
|
|
(set-current-component form input-entry)
|
|
(loop))
|
|
(begin
|
|
(destroy-form-and-pop form)
|
|
input))))))))
|
|
|
|
(define (run-error-page text title)
|
|
"Run a page to inform the user of an error. The page contains the given TEXT
|
|
to explain the error and an \"OK\" button to acknowledge the error. The title
|
|
of the page is set to TITLE."
|
|
(let* ((text-box
|
|
(make-reflowed-textbox -1 -1 text 40
|
|
#:flags FLAG-BORDER))
|
|
(grid (make-grid 1 2))
|
|
(ok-button (make-button -1 -1 "OK"))
|
|
(form (make-form)))
|
|
|
|
(set-grid-field grid 0 0 GRID-ELEMENT-COMPONENT text-box)
|
|
(set-grid-field grid 0 1 GRID-ELEMENT-COMPONENT ok-button
|
|
#:pad-top 1)
|
|
|
|
;; Set the background color to red to indicate something went wrong.
|
|
(newt-set-color COLORSET-ROOT "white" "red")
|
|
(add-components-to-form form text-box ok-button)
|
|
(make-wrapped-grid-window grid title)
|
|
(run-form form)
|
|
;; Restore the background to its original color.
|
|
(newt-set-color COLORSET-ROOT "white" "blue")
|
|
(destroy-form-and-pop form)))
|
|
|
|
(define* (run-confirmation-page text title
|
|
#:key (exit-button-procedure (const #f)))
|
|
"Run a page to inform the user of an error. The page contains the given TEXT
|
|
to explain the error and an \"OK\" button to acknowledge the error. The title
|
|
of the page is set to TITLE."
|
|
(let* ((text-box
|
|
(make-reflowed-textbox -1 -1 text 40
|
|
#:flags FLAG-BORDER))
|
|
(ok-button (make-button -1 -1 (G_ "Continue")))
|
|
(exit-button (make-button -1 -1 (G_ "Exit")))
|
|
(grid (vertically-stacked-grid
|
|
GRID-ELEMENT-COMPONENT text-box
|
|
GRID-ELEMENT-SUBGRID
|
|
(horizontal-stacked-grid
|
|
GRID-ELEMENT-COMPONENT ok-button
|
|
GRID-ELEMENT-COMPONENT exit-button)))
|
|
(form (make-form)))
|
|
|
|
(add-form-to-grid grid form #t)
|
|
(make-wrapped-grid-window grid title)
|
|
|
|
(receive (exit-reason argument)
|
|
(run-form form)
|
|
(dynamic-wind
|
|
(const #t)
|
|
(lambda ()
|
|
(case exit-reason
|
|
((exit-component)
|
|
(cond
|
|
((components=? argument ok-button)
|
|
#t)
|
|
((components=? argument exit-button)
|
|
(exit-button-procedure))))))
|
|
(lambda ()
|
|
(destroy-form-and-pop form))))))
|
|
|
|
(define* (run-listbox-selection-page #:key
|
|
info-text
|
|
title
|
|
(info-textbox-width 50)
|
|
listbox-items
|
|
listbox-item->text
|
|
(listbox-height 20)
|
|
(listbox-default-item #f)
|
|
(listbox-allow-multiple? #f)
|
|
(sort-listbox-items? #t)
|
|
(allow-delete? #f)
|
|
(skip-item-procedure?
|
|
(const #f))
|
|
button-text
|
|
(button-callback-procedure
|
|
(const #t))
|
|
(button2-text #f)
|
|
(button2-callback-procedure
|
|
(const #t))
|
|
(listbox-callback-procedure
|
|
identity)
|
|
(hotkey-callback-procedure
|
|
(const #t)))
|
|
"Run a page asking the user to select an item in a listbox. The page
|
|
contains, stacked vertically from the top to the bottom, an informative text
|
|
set to INFO-TEXT, a listbox and a button. The listbox will be filled with
|
|
LISTBOX-ITEMS converted to text by applying the procedure LISTBOX-ITEM->TEXT
|
|
on every item. The selected item from LISTBOX-ITEMS is returned. The button
|
|
text is set to BUTTON-TEXT and the procedure BUTTON-CALLBACK-PROCEDURE called
|
|
when it is pressed. The procedure LISTBOX-CALLBACK-PROCEDURE is called when an
|
|
item from the listbox is selected (by pressing the <ENTER> key).
|
|
|
|
INFO-TEXTBOX-WIDTH is the width of the textbox where INFO-TEXT will be
|
|
displayed. LISTBOX-HEIGHT is the height of the listbox.
|
|
|
|
If LISTBOX-DEFAULT-ITEM is set to the value of one of the items in
|
|
LISTBOX-ITEMS, it will be selected by default. Otherwise, the first element of
|
|
the listbox is selected.
|
|
|
|
If LISTBOX-ALLOW-MULTIPLE? is set to #t, multiple items from the listbox can
|
|
be selected (using the <SPACE> key). It that case, a list containing the
|
|
selected items will be returned.
|
|
|
|
If SORT-LISTBOX-ITEMS? is set to #t, the listbox items are sorted using
|
|
'string-locale<?' procedure (after being converted to text).
|
|
|
|
If ALLOW-DELETE? is #t, the form will return if the <DELETE> key is pressed,
|
|
otherwise nothing will happen.
|
|
|
|
Each time the listbox current item changes, call SKIP-ITEM-PROCEDURE? with the
|
|
current listbox item as argument. If it returns #t, skip the element and jump
|
|
to the next/previous one depending on the previous item, otherwise do
|
|
nothing."
|
|
|
|
(define (fill-listbox listbox items)
|
|
"Append the given ITEMS to LISTBOX, once they have been converted to text
|
|
with LISTBOX-ITEM->TEXT. Each item appended to the LISTBOX is given a key by
|
|
newt. Save this key by returning an association list under the form:
|
|
|
|
((NEWT-LISTBOX-KEY . ITEM) ...)
|
|
|
|
where NEWT-LISTBOX-KEY is the key returned by APPEND-ENTRY-TO-LISTBOX, when
|
|
ITEM was inserted into LISTBOX."
|
|
(map (lambda (item)
|
|
(let* ((text (listbox-item->text item))
|
|
(key (append-entry-to-listbox listbox text)))
|
|
(cons key item)))
|
|
items))
|
|
|
|
(define (sort-listbox-items listbox-items)
|
|
"Return LISTBOX-ITEMS sorted using the 'string-locale<?' procedure on the text
|
|
corresponding to each item in the list."
|
|
(let* ((items (map (lambda (item)
|
|
(cons item (listbox-item->text item)))
|
|
listbox-items))
|
|
(sorted-items
|
|
(sort items (lambda (a b)
|
|
(let ((text-a (cdr a))
|
|
(text-b (cdr b)))
|
|
(string-locale<? text-a text-b))))))
|
|
(map car sorted-items)))
|
|
|
|
;; Store the last selected listbox item's key.
|
|
(define last-listbox-key (make-parameter #f))
|
|
|
|
(define (previous-key keys key)
|
|
(let ((index (list-index (cut eq? key <>) keys)))
|
|
(and index
|
|
(> index 0)
|
|
(list-ref keys (- index 1)))))
|
|
|
|
(define (next-key keys key)
|
|
(let ((index (list-index (cut eq? key <>) keys)))
|
|
(and index
|
|
(< index (- (length keys) 1))
|
|
(list-ref keys (+ index 1)))))
|
|
|
|
(define (set-default-item listbox listbox-keys default-item)
|
|
"Set the default item of LISTBOX to DEFAULT-ITEM. LISTBOX-KEYS is the
|
|
association list returned by the FILL-LISTBOX procedure. It is used because
|
|
the current listbox item has to be selected by key."
|
|
(for-each (match-lambda
|
|
((key . item)
|
|
(when (equal? item default-item)
|
|
(set-current-listbox-entry-by-key listbox key))))
|
|
listbox-keys))
|
|
|
|
(let* ((listbox (make-listbox
|
|
-1 -1
|
|
listbox-height
|
|
(logior FLAG-SCROLL FLAG-BORDER FLAG-RETURNEXIT
|
|
(if listbox-allow-multiple?
|
|
FLAG-MULTIPLE
|
|
0))))
|
|
(form (make-form))
|
|
(info-textbox
|
|
(make-reflowed-textbox -1 -1 info-text
|
|
info-textbox-width
|
|
#:flags FLAG-BORDER))
|
|
(button (make-button -1 -1 button-text))
|
|
(button2 (and button2-text
|
|
(make-button -1 -1 button2-text)))
|
|
(grid (vertically-stacked-grid
|
|
GRID-ELEMENT-COMPONENT info-textbox
|
|
GRID-ELEMENT-COMPONENT listbox
|
|
GRID-ELEMENT-SUBGRID
|
|
(apply
|
|
horizontal-stacked-grid
|
|
GRID-ELEMENT-COMPONENT button
|
|
`(,@(if button2
|
|
(list GRID-ELEMENT-COMPONENT button2)
|
|
'())))))
|
|
(sorted-items (if sort-listbox-items?
|
|
(sort-listbox-items listbox-items)
|
|
listbox-items))
|
|
(keys (fill-listbox listbox sorted-items)))
|
|
|
|
;; On every listbox element change, check if we need to skip it. If yes,
|
|
;; depending on the 'last-listbox-key', jump forward or backward. If no,
|
|
;; do nothing.
|
|
(add-component-callback
|
|
listbox
|
|
(lambda (component)
|
|
(let* ((current-key (current-listbox-entry listbox))
|
|
(listbox-keys (map car keys))
|
|
(last-key (last-listbox-key))
|
|
(item (assoc-ref keys current-key))
|
|
(prev-key (previous-key listbox-keys current-key))
|
|
(next-key (next-key listbox-keys current-key)))
|
|
;; Update last-listbox-key before a potential call to
|
|
;; set-current-listbox-entry-by-key, because it will immediately
|
|
;; cause this callback to be called for the new entry.
|
|
(last-listbox-key current-key)
|
|
(when (skip-item-procedure? item)
|
|
(when (eq? prev-key last-key)
|
|
(if next-key
|
|
(set-current-listbox-entry-by-key listbox next-key)
|
|
(set-current-listbox-entry-by-key listbox prev-key)))
|
|
(when (eq? next-key last-key)
|
|
(if prev-key
|
|
(set-current-listbox-entry-by-key listbox prev-key)
|
|
(set-current-listbox-entry-by-key listbox next-key)))))))
|
|
|
|
(when listbox-default-item
|
|
(set-default-item listbox keys listbox-default-item))
|
|
|
|
(when allow-delete?
|
|
(form-add-hotkey form KEY-DELETE))
|
|
|
|
(add-form-to-grid grid form #t)
|
|
(make-wrapped-grid-window grid title)
|
|
|
|
(receive (exit-reason argument)
|
|
(run-form form)
|
|
(dynamic-wind
|
|
(const #t)
|
|
(lambda ()
|
|
(case exit-reason
|
|
((exit-component)
|
|
(cond
|
|
((components=? argument button)
|
|
(button-callback-procedure))
|
|
((and button2
|
|
(components=? argument button2))
|
|
(button2-callback-procedure))
|
|
((components=? argument listbox)
|
|
(if listbox-allow-multiple?
|
|
(let* ((entries (listbox-selection listbox))
|
|
(items (map (lambda (entry)
|
|
(assoc-ref keys entry))
|
|
entries)))
|
|
(listbox-callback-procedure items))
|
|
(let* ((entry (current-listbox-entry listbox))
|
|
(item (assoc-ref keys entry)))
|
|
(listbox-callback-procedure item))))))
|
|
((exit-hotkey)
|
|
(let* ((entry (current-listbox-entry listbox))
|
|
(item (assoc-ref keys entry)))
|
|
(hotkey-callback-procedure argument item)))))
|
|
(lambda ()
|
|
(destroy-form-and-pop form))))))
|
|
|
|
(define* (run-scale-page #:key
|
|
title
|
|
info-text
|
|
(info-textbox-width 50)
|
|
(scale-width 40)
|
|
(scale-full-value 100)
|
|
scale-update-proc
|
|
(max-scale-update 5))
|
|
"Run a page with a progress bar (called 'scale' in newt). The given
|
|
INFO-TEXT is displayed in a textbox above the scale. The width of the textbox
|
|
is set to INFO-TEXTBOX-WIDTH. The width of the scale is set to
|
|
SCALE-WIDTH. SCALE-FULL-VALUE indicates the value that correspond to 100% of
|
|
the scale.
|
|
|
|
The procedure SCALE-UPDATE-PROC shall return a new scale
|
|
value. SCALE-UPDATE-PROC will be called until the returned value is superior
|
|
or equal to SCALE-FULL-VALUE, but no more than MAX-SCALE-UPDATE times. An
|
|
error is raised if the MAX-SCALE-UPDATE limit is reached."
|
|
(let* ((info-textbox
|
|
(make-reflowed-textbox -1 -1 info-text
|
|
info-textbox-width
|
|
#:flags FLAG-BORDER))
|
|
(scale (make-scale -1 -1 scale-width scale-full-value))
|
|
(grid (vertically-stacked-grid
|
|
GRID-ELEMENT-COMPONENT info-textbox
|
|
GRID-ELEMENT-COMPONENT scale))
|
|
(form (make-form)))
|
|
|
|
(add-form-to-grid grid form #t)
|
|
(make-wrapped-grid-window grid title)
|
|
|
|
(draw-form form)
|
|
;; This call is imperative, otherwise the form won't be displayed. See the
|
|
;; explanation in the above commentary.
|
|
(newt-refresh)
|
|
|
|
(dynamic-wind
|
|
(const #t)
|
|
(lambda ()
|
|
(let loop ((i max-scale-update)
|
|
(last-value 0))
|
|
(let ((value (scale-update-proc last-value)))
|
|
(set-scale-value scale value)
|
|
;; Same as above.
|
|
(newt-refresh)
|
|
(unless (>= value scale-full-value)
|
|
(if (> i 0)
|
|
(loop (- i 1) value)
|
|
(error "Max scale updates reached."))))))
|
|
(lambda ()
|
|
(destroy-form-and-pop form)))))
|
|
|
|
(define %none-selected
|
|
(circular-list #f))
|
|
|
|
(define* (run-checkbox-tree-page #:key
|
|
info-text
|
|
title
|
|
items
|
|
(selection %none-selected)
|
|
item->text
|
|
(info-textbox-width 50)
|
|
(checkbox-tree-height 10)
|
|
(ok-button-callback-procedure
|
|
(const #t))
|
|
(exit-button-callback-procedure
|
|
(const #t)))
|
|
"Run a page allowing the user to select one or multiple items among ITEMS in
|
|
a checkbox list. The page contains vertically stacked from the top to the
|
|
bottom, an informative text set to INFO-TEXT, the checkbox list and two
|
|
buttons, 'Ok' and 'Exit'. The page title's is set to TITLE. ITEMS are
|
|
converted to text using ITEM->TEXT before being displayed in the checkbox
|
|
list. SELECTION is a list of Booleans of the same length as ITEMS that
|
|
specifies which items are initially checked.
|
|
|
|
INFO-TEXTBOX-WIDTH is the width of the textbox where INFO-TEXT will be
|
|
displayed. CHECKBOX-TREE-HEIGHT is the height of the checkbox list.
|
|
|
|
OK-BUTTON-CALLBACK-PROCEDURE is called when the 'Ok' button is pressed.
|
|
EXIT-BUTTON-CALLBACK-PROCEDURE is called when the 'Exit' button is
|
|
pressed.
|
|
|
|
This procedure returns the list of checked items in the checkbox list among
|
|
ITEMS when 'Ok' is pressed."
|
|
(define (fill-checkbox-tree checkbox-tree items)
|
|
(map (lambda (item selected?)
|
|
(let* ((item-text (item->text item))
|
|
(key (add-entry-to-checkboxtree checkbox-tree item-text
|
|
(if selected?
|
|
FLAG-SELECTED
|
|
0))))
|
|
(cons key item)))
|
|
items
|
|
selection))
|
|
|
|
(let* ((checkbox-tree
|
|
(make-checkboxtree -1 -1
|
|
checkbox-tree-height
|
|
FLAG-BORDER))
|
|
(info-textbox
|
|
(make-reflowed-textbox -1 -1 info-text
|
|
info-textbox-width
|
|
#:flags FLAG-BORDER))
|
|
(ok-button (make-button -1 -1 (G_ "OK")))
|
|
(exit-button (make-button -1 -1 (G_ "Exit")))
|
|
(grid (vertically-stacked-grid
|
|
GRID-ELEMENT-COMPONENT info-textbox
|
|
GRID-ELEMENT-COMPONENT checkbox-tree
|
|
GRID-ELEMENT-SUBGRID
|
|
(horizontal-stacked-grid
|
|
GRID-ELEMENT-COMPONENT ok-button
|
|
GRID-ELEMENT-COMPONENT exit-button)))
|
|
(keys (fill-checkbox-tree checkbox-tree items))
|
|
(form (make-form)))
|
|
|
|
(add-form-to-grid grid form #t)
|
|
(make-wrapped-grid-window grid title)
|
|
|
|
(receive (exit-reason argument)
|
|
(run-form form)
|
|
(dynamic-wind
|
|
(const #t)
|
|
(lambda ()
|
|
(case exit-reason
|
|
((exit-component)
|
|
(cond
|
|
((components=? argument ok-button)
|
|
(let* ((entries (current-checkbox-selection checkbox-tree))
|
|
(current-items (map (lambda (entry)
|
|
(assoc-ref keys entry))
|
|
entries)))
|
|
(ok-button-callback-procedure)
|
|
current-items))
|
|
((components=? argument exit-button)
|
|
(exit-button-callback-procedure))))))
|
|
(lambda ()
|
|
(destroy-form-and-pop form))))))
|
|
|
|
(define* (run-file-textbox-page #:key
|
|
info-text
|
|
title
|
|
file
|
|
(info-textbox-width 50)
|
|
(file-textbox-width 50)
|
|
(file-textbox-height 30)
|
|
(exit-button? #t)
|
|
(ok-button-callback-procedure
|
|
(const #t))
|
|
(exit-button-callback-procedure
|
|
(const #t)))
|
|
(let* ((info-textbox
|
|
(make-reflowed-textbox -1 -1 info-text
|
|
info-textbox-width
|
|
#:flags FLAG-BORDER))
|
|
(file-text (read-all file))
|
|
(file-textbox
|
|
(make-textbox -1 -1
|
|
file-textbox-width
|
|
file-textbox-height
|
|
(logior FLAG-SCROLL FLAG-BORDER)))
|
|
(ok-button (make-button -1 -1 (G_ "OK")))
|
|
(exit-button (make-button -1 -1 (G_ "Exit")))
|
|
(grid (vertically-stacked-grid
|
|
GRID-ELEMENT-COMPONENT info-textbox
|
|
GRID-ELEMENT-COMPONENT file-textbox
|
|
GRID-ELEMENT-SUBGRID
|
|
(apply
|
|
horizontal-stacked-grid
|
|
GRID-ELEMENT-COMPONENT ok-button
|
|
`(,@(if exit-button?
|
|
(list GRID-ELEMENT-COMPONENT exit-button)
|
|
'())))))
|
|
(form (make-form)))
|
|
|
|
(set-textbox-text file-textbox file-text)
|
|
(add-form-to-grid grid form #t)
|
|
(make-wrapped-grid-window grid title)
|
|
|
|
(receive (exit-reason argument)
|
|
(run-form form)
|
|
(dynamic-wind
|
|
(const #t)
|
|
(lambda ()
|
|
(case exit-reason
|
|
((exit-component)
|
|
(cond
|
|
((components=? argument ok-button)
|
|
(ok-button-callback-procedure))
|
|
((and exit-button?
|
|
(components=? argument exit-button))
|
|
(exit-button-callback-procedure))))))
|
|
(lambda ()
|
|
(destroy-form-and-pop form))))))
|