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;;; gtk-file-dialog.el --- A nicer file selection dialog for XEmacs w/GTK primitives
;; Copyright (C) 2000 Free Software Foundation, Inc.
;; Maintainer: William M. Perry <wmperry@gnu.org>
;; Keywords: extensions, internal
;; This file is part of XEmacs.
;; XEmacs 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 2, or (at your option)
;; any later version.
;; XEmacs 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 XEmacs; see the file COPYING. If not, write to the
;; Free Software Foundation, 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Synched up with: Not in FSF.
;;; Commentary:
;; The default GTK file selection dialog is not sufficient for our
;; needs. Limitations include:
;;
;; - not derived from GtkDialog
;; - no support for filters based on file types
;; - no support for setting an initial directory
;; - no way to tell it 'file must exist'
;; - no easy way to tell it to look at directories only
;; - ugly as sin
;;
;; This attempts to rectify the situation.
(defun gtk-file-dialog-fill-file-list (dialog dir)
(if (not dir)
(setq dir (get dialog 'x-file-dialog-current-dir nil)))
(put dialog 'x-file-dialog-current-dir dir)
(let ((list (get dialog 'x-file-dialog-files-list nil))
(remotep (file-remote-p dir)))
(if (not list)
nil
(gtk-clist-clear list)
(gtk-clist-freeze list)
;; NOTE: Current versions of efs / ange-ftp do not honor the
;; files-only flag to directory-files, but actually DOING these
;; checks is hideously expensive. Leave it turned off for now.
(mapc (lambda (f)
(if (or t ; Lets just wait for EFS to
(not remotep) ; fix itself, shall we?
(not (file-directory-p (expand-file-name f dir))))
(gtk-clist-append list (list f))))
(directory-files dir nil
(get dialog 'x-file-dialog-active-filter nil)
nil t))
(gtk-clist-thaw list))))
(defun gtk-file-dialog-fill-directory-list (dialog dir)
(let ((subdirs (directory-files dir nil nil nil 5))
(remotep (file-remote-p dir))
(selected-dir (get dialog 'x-file-dialog-current-dir "/"))
(directory-list (get dialog 'x-file-dialog-directory-list)))
(gtk-clist-freeze directory-list)
(gtk-clist-clear directory-list)
(while subdirs
(if (equal "." (car subdirs))
nil
;; NOTE: Current versions of efs / ange-ftp do not honor the
;; files-only flag to directory-files, but actually DOING these
;; checks is hideously expensive. Leave it turned off for now.
(if (or t ; Lets just wait for EFS to
(not remotep) ; fix itself, shall we?
(file-directory-p (expand-file-name (car subdirs) dir)))
(gtk-clist-append directory-list (list (car subdirs)))))
(pop subdirs))
(gtk-clist-thaw directory-list)))
(defun gtk-file-dialog-update-dropdown (dialog dir)
(let ((combo-box (get dialog 'x-file-dialog-select-list))
(components (reverse
(delete ""
(split-string dir
(concat "[" (char-to-string directory-sep-char) "]")))))
(entries nil))
(while components
(push (concat "/" (mapconcat 'identity (reverse components)
(char-to-string directory-sep-char)))
entries)
(pop components))
(push (expand-file-name "." "~/") entries)
(gtk-combo-set-popdown-strings combo-box (nreverse entries))))
(defun gtk-file-dialog-select-directory (dialog dir)
(gtk-file-dialog-fill-directory-list dialog dir)
(gtk-file-dialog-fill-file-list dialog dir)
(gtk-file-dialog-update-dropdown dialog dir))
(defun gtk-file-dialog-new (&rest keywords)
"Create a XEmacs file selection dialog.
Optional keyword arguments allowed:
:title The title of the dialog
:initial-directory Initial directory to show
:filter-list List of filter descriptions and filters
:file-must-exist Whether the file must exist or not
:directory Look for a directory instead
:callback Function to call with one arg, the selection
"
(let* ((dialog (gtk-dialog-new))
(vbox (gtk-dialog-vbox dialog))
(dir (plist-get keywords :initial-directory default-directory))
(button-area (gtk-dialog-action-area dialog))
(initializing-gtk-file-dialog t)
(select-box nil)
button hbox)
(put dialog 'type 'dialog)
(gtk-window-set-title dialog (plist-get keywords :title "Select a file..."))
(setq button (gtk-button-new-with-label "OK"))
(gtk-container-add button-area button)
(gtk-signal-connect button 'clicked
(lambda (button dialog)
(funcall
(get dialog 'x-file-dialog-callback 'ignore)
(gtk-entry-get-text
(get dialog 'x-file-dialog-entry nil)))
(gtk-widget-destroy dialog))
dialog)
(put dialog 'x-file-dialog-ok-button button)
(setq button (gtk-button-new-with-label "Cancel"))
(gtk-container-add button-area button)
(gtk-signal-connect button 'clicked
(lambda (button dialog)
(gtk-widget-destroy dialog)) dialog)
(put dialog 'x-file-dialog-cancel-button button)
(put dialog 'x-file-dialog-callback (plist-get keywords :callback 'ignore))
(put dialog 'x-file-dialog-construct-args keywords)
(put dialog 'x-file-dialog-current-dir dir)
;; Dropdown list of directories...
(setq select-box (gtk-combo-new))
(gtk-combo-disable-activate select-box)
(gtk-box-pack-start vbox select-box nil nil 5)
(put dialog 'x-file-dialog-select-list select-box)
;; Hitting return in the entry will change dirs...
(gtk-signal-connect (gtk-combo-entry select-box) 'activate
(lambda (entry dialog)
(gtk-file-dialog-select-directory dialog
(gtk-entry-get-text entry)))
dialog)
;; Start laying out horizontally...
(setq hbox (gtk-hbox-new nil 0))
(gtk-box-pack-start vbox hbox t t 5)
;; Directory listing
(let ((directories (gtk-clist-new-with-titles 1 '("Directories")))
(scrolled (gtk-scrolled-window-new nil nil))
(item nil))
(gtk-container-add scrolled directories)
(gtk-widget-set-usize scrolled 200 300)
(gtk-box-pack-start hbox scrolled t t 0)
(put dialog 'x-file-dialog-directory-list directories)
(put dialog 'x-file-dialog-directory-scrolled scrolled)
(gtk-signal-connect directories 'select-row
(lambda (list row column event dialog)
(let ((dir (expand-file-name
(gtk-clist-get-text
(get dialog 'x-file-dialog-directory-list)
row column)
(get dialog 'x-file-dialog-current-dir))))
(if (and (misc-user-event-p event)
(event-function event))
(gtk-file-dialog-select-directory dialog dir)
(gtk-entry-set-text
(get dialog 'x-file-dialog-entry)
dir))))
dialog)
)
(if (plist-get keywords :directory nil)
;; Directory listings only do not need the file or filters buttons.
nil
;; File listing
(let ((list (gtk-clist-new-with-titles 1 '("Files")))
(scrolled (gtk-scrolled-window-new nil nil)))
(gtk-container-add scrolled list)
(gtk-widget-set-usize scrolled 200 300)
(gtk-box-pack-start hbox scrolled t t 0)
(gtk-signal-connect list 'select-row
(lambda (list row column event dialog)
(gtk-entry-set-text
(get dialog 'x-file-dialog-entry nil)
(expand-file-name
(gtk-clist-get-text list row column)
(get dialog 'x-file-dialog-current-dir nil)))
(if (and (misc-user-event-p event)
(event-function event))
;; Got a double or triple click event...
(gtk-button-clicked
(get dialog 'x-file-dialog-ok-button nil))))
dialog)
(put dialog 'x-file-dialog-files-list list))
;; Filters
(if (not (plist-get keywords :filter-list nil))
;; Don't need to bother packing this
nil
(setq hbox (gtk-hbox-new nil 0))
(gtk-box-pack-start vbox hbox nil nil 0)
(let ((label nil)
(options (plist-get keywords :filter-list nil))
(omenu nil)
(menu nil)
(item nil))
(setq omenu (gtk-option-menu-new)
menu (gtk-menu-new)
label (gtk-label-new "Filter: "))
(put dialog 'x-file-dialog-active-filter (cdr (car options)))
(mapc (lambda (o)
(setq item (gtk-menu-item-new-with-label (car o)))
(gtk-signal-connect item 'activate
(lambda (obj data)
(put (car data) 'x-file-dialog-active-filter (cdr data))
(gtk-file-dialog-fill-file-list (car data) nil))
(cons dialog (cdr o)))
(gtk-menu-append menu item)
(gtk-widget-show item)) options)
(gtk-option-menu-set-menu omenu menu)
(gtk-box-pack-end hbox omenu nil nil 0)
(gtk-box-pack-end hbox label nil nil 0))))
;; Entry
(let ((entry (gtk-entry-new)))
(if (plist-get keywords :directory nil)
nil
(gtk-box-pack-start vbox entry nil nil 0))
(if (plist-get keywords :file-must-exist nil)
(progn
(gtk-widget-set-sensitive (get dialog 'x-file-dialog-ok-button nil) nil)
(gtk-signal-connect entry 'changed
(lambda (entry dialog)
(gtk-widget-set-sensitive
(get dialog 'x-file-dialog-ok-button)
(file-exists-p (gtk-entry-get-text entry))))
dialog)))
(put dialog 'x-file-dialog-entry entry))
(gtk-widget-realize dialog)
;; Populate the file list if necessary
(gtk-file-dialog-select-directory dialog dir)
dialog))
(provide 'gtk-file-dialog)
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