..
original commit: 6e2b0ee5bffbf12912fedfc0a0119e6a5b42dd78
This commit is contained in:
Robby Findler
parent
1c94dbf071
commit
c9c0aefebb
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@ -266,10 +266,14 @@
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"garbage collection.")
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(autosave:restore-autosave-files/gui
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(-> (union false? (is-a?/c top-level-window<%>)))
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(-> void?)
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()
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"Opens a GUI to ask the user about recovering any autosave files"
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"left around from crashes and things.")
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"left around from crashes and things."
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""
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"This function doesn't return until the user has finished"
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"restoring the autosave files. (It uses yield to handle events"
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"however).")
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(exit:frame-exiting
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(case->
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@ -2,6 +2,7 @@
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(module autosave mzscheme
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(require (lib "unitsig.ss")
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(lib "class.ss")
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(lib "file.ss")
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"sig.ss"
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(lib "mred-sig.ss" "mred")
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(lib "mred.ss" "mred") ;; remove this!
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@ -15,7 +16,11 @@
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(import mred^
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[exit : framework:exit^]
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[preferences : framework:preferences^]
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[frame : framework:frame^])
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[frame : framework:frame^]
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[scheme : framework:scheme^]
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[editor : framework:editor^]
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[text : framework:text^]
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[finder : framework:finder^])
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(define autosavable<%>
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(interface ()
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@ -70,7 +75,6 @@
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(let* ([new-filename (send object do-autosave)]
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[tmp-box (box #f)]
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[filename (send object get-filename tmp-box)])
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(printf "autosave ~s ~s to ~s\n" object filename new-filename)
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(loop (cdr orig-objects)
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(if new-filename
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(cons (list (and (not (unbox tmp-box)) filename)
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@ -99,21 +103,52 @@
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;; restore-autosave-files/gui : -> (union #f (is-a?/c top-level-window<%>))
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;; opens a frame that lists the autosave files that have changed.
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(define (restore-autosave-files/gui)
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(and (file-exists? autosave-toc-filename)
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;; main : -> void
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;; start everything going
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(define (main)
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(when (file-exists? autosave-toc-filename)
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(let* ([table (call-with-input-file autosave-toc-filename read)]
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;; assume that the autosave file was deleted due to the file being saved
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[filtered-table
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(filter (lambda (x) (file-exists? (cadr x))) table)])
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(and (not (null? filtered-table))
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(let ([f (make-object frame:basic% (string-constant recover-autosave-files-frame-title))])
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(for-each (add-table-line (send f get-area-container)) filtered-table)
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f)))))
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(unless (null? filtered-table)
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(let* ([f (make-object final-frame% (string-constant recover-autosave-files-frame-title))]
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[t (instantiate text% ()
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(auto-wrap #t))]
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[ec (instantiate editor-canvas% ()
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(parent (send f get-area-container))
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(editor t)
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(line-count 2)
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(style '(no-hscroll)))]
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[hp (make-object horizontal-panel% (send f get-area-container))]
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[vp (make-object vertical-panel% hp)])
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(make-object grow-box-spacer-pane% hp)
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(send t insert (string-constant autosave-explanation))
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(send t hide-caret #t)
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(send t set-position 0 0)
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(send t lock #t)
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;; add-table-line : (is-a? area-container<%>)
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(for-each (add-table-line vp f) filtered-table)
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(send f show #t)
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(yield done-semaphore)
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(void))))))
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(define done-semaphore (make-semaphore 0))
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(define final-frame%
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(class frame:basic%
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(rename [super-on-close on-close])
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(define/override (on-close)
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(super-on-close)
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(semaphore-post done-semaphore))
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(super-instantiate ())))
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;; add-table-line : (is-a? area-container<%>) (union #f (is-a?/c top-level-window<%>))
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;; -> (list (union #f string[filename]) string[filename-file-exists?])
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;; -> void
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;; adds in a line to the overview table showing this pair of files.
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(define (add-table-line area-container)
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(define (add-table-line area-container parent)
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(lambda (table-entry)
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(let* ([orig-file (car table-entry)]
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[backup-file (cadr table-entry)]
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@ -123,14 +158,6 @@
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(stretchable-height #f))]
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[vp (instantiate vertical-panel% ()
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(parent hp))]
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[compare
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(make-object button% (string-constant autosave-details) hp
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(lambda (x y)
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(show-differences table-entry)))]
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[recover
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(make-object button% (string-constant autosave-recover) hp
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(lambda (x y)
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(recover-file area-container hp table-entry)))]
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[msg1-panel (instantiate horizontal-panel% ()
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(parent vp))]
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[msg1-label (instantiate message% ()
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@ -148,11 +175,23 @@
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[msg2 (instantiate message% ()
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(label backup-file)
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(stretchable-width #t)
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(parent msg2-panel))])
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(parent msg2-panel))]
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[details
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(make-object button% (string-constant autosave-details) hp
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(lambda (x y)
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(show-files table-entry)))]
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[recover
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(make-object button% (string-constant autosave-recover) hp
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(lambda (recover y)
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(let ([filename-result (recover-file parent table-entry)])
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(when filename-result
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(send recover enable #f)
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(send details enable #f)
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(send msg2 set-label (string-constant autosave-recovered!))
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(send msg1 set-label filename-result)))))])
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(let ([w (max (send msg1-label get-width) (send msg2-label get-width))])
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(send msg1-label min-width w)
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(send msg2-label min-width w))
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(send compare enable orig-file)
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(void))))
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;; show-files : (list (union #f string[filename]) string) -> void
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@ -169,8 +208,8 @@
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(define hp (instantiate horizontal-panel% ()
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(parent (send frame get-area-container))))
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(when file1
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(add-file-viewer file1 (string-constant autosave-original-label) hp))
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(add-file-viewer file2 (string-constant autosave-autosave-label) hp)
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(add-file-viewer file1 hp (string-constant autosave-original-label)))
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(add-file-viewer file2 hp (string-constant autosave-autosave-label))
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(send frame show #t)))
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;; add-file-viewer : string[filename] -> void
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@ -190,5 +229,23 @@
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(editor:keymap-mixin
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text:basic%)))
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(define (recover-file parent child table-entry)
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(void)))))
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(main))
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;; recover-file : (union #f (is-a?/c toplevel-window<%>))
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;; (list (union #f string[filename]) string)
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;; -> (union #f string)
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(define (recover-file parent table-entry)
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(let ([orig-name (or (car table-entry)
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(parameterize ([finder:dialog-parent-parameter parent])
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(finder:put-file)))])
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(and orig-name
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(let ([autosave-name (cadr table-entry)])
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(let ([tmp-name (and (file-exists? orig-name)
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(make-temporary-file "autosave-repair~a" orig-name))])
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(when (file-exists? orig-name)
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(delete-file orig-name))
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(copy-file autosave-name orig-name)
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(delete-file autosave-name)
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(when tmp-name
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(delete-file tmp-name))
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orig-name))))))))
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@ -14,7 +14,9 @@
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(let-values ([(base name dir?)
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(if name
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(split-path name)
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(values (current-directory) "mredauto" #f))])
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(values (find-system-path 'home-dir)
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"mredauto"
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#f))])
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(let* ([base (if (string? base)
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base
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(current-directory))]
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