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1 ;;; gtk-file-dialog.el --- A nicer file selection dialog for XEmacs w/GTK primitives
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2
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3 ;; Copyright (C) 2000 Free Software Foundation, Inc.
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4
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5 ;; Maintainer: William M. Perry <wmperry@gnu.org>
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6 ;; Keywords: extensions, internal
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7
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8 ;; This file is part of XEmacs.
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9
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10 ;; XEmacs is free software; you can redistribute it and/or modify it
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11 ;; under the terms of the GNU General Public License as published by
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12 ;; the Free Software Foundation; either version 2, or (at your option)
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13 ;; any later version.
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14
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15 ;; XEmacs is distributed in the hope that it will be useful, but
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16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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18 ;; General Public License for more details.
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19
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20 ;; You should have received a copy of the GNU General Public License
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21 ;; along with XEmacs; see the file COPYING. If not, write to the
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22 ;; Free Software Foundation, 59 Temple Place - Suite 330,
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23 ;; Boston, MA 02111-1307, USA.
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24
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25 ;;; Synched up with: Not in FSF.
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26
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27 ;;; Commentary:
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28
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29 ;; The default GTK file selection dialog is not sufficient for our
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30 ;; needs. Limitations include:
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31 ;;
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32 ;; - not derived from GtkDialog
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33 ;; - no support for filters based on file types
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34 ;; - no support for setting an initial directory
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35 ;; - no way to tell it 'file must exist'
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36 ;; - no easy way to tell it to look at directories only
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37 ;; - ugly as sin
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38 ;;
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39 ;; This attempts to rectify the situation.
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40
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41 (defun gtk-file-dialog-fill-file-list (dialog dir)
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42 (if (not dir)
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43 (setq dir (get dialog 'x-file-dialog-current-dir nil)))
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44
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45 (put dialog 'x-file-dialog-current-dir dir)
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46
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47 (let ((list (get dialog 'x-file-dialog-files-list nil))
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48 (remotep (file-remote-p dir)))
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49 (if (not list)
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50 nil
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51 (gtk-clist-clear list)
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52 (gtk-clist-freeze list)
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53 ;; NOTE: Current versions of efs / ange-ftp do not honor the
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54 ;; files-only flag to directory-files, but actually DOING these
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55 ;; checks is hideously expensive. Leave it turned off for now.
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56 (mapc (lambda (f)
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57 (if (or t ; Lets just wait for EFS to
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58 (not remotep) ; fix itself, shall we?
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59 (not (file-directory-p (expand-file-name f dir))))
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60 (gtk-clist-append list (list f))))
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61 (directory-files dir nil
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62 (get dialog 'x-file-dialog-active-filter nil)
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63 nil t))
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64 (gtk-clist-thaw list))))
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65
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66 (defun gtk-file-dialog-fill-directory-list (dialog dir)
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67 (let ((subdirs (directory-files dir nil nil nil 5))
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68 (remotep (file-remote-p dir))
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69 (selected-dir (get dialog 'x-file-dialog-current-dir "/"))
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70 (directory-list (get dialog 'x-file-dialog-directory-list)))
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71
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72 (gtk-clist-freeze directory-list)
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73 (gtk-clist-clear directory-list)
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74
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75 (while subdirs
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76 (if (equal "." (car subdirs))
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77 nil
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78 ;; NOTE: Current versions of efs / ange-ftp do not honor the
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79 ;; files-only flag to directory-files, but actually DOING these
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80 ;; checks is hideously expensive. Leave it turned off for now.
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81 (if (or t ; Lets just wait for EFS to
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82 (not remotep) ; fix itself, shall we?
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83 (file-directory-p (expand-file-name (car subdirs) dir)))
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84 (gtk-clist-append directory-list (list (car subdirs)))))
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85 (pop subdirs))
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86 (gtk-clist-thaw directory-list)))
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87
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88 (defun gtk-file-dialog-update-dropdown (dialog dir)
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89 (let ((combo-box (get dialog 'x-file-dialog-select-list))
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90 (components (reverse
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91 (delete ""
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92 (split-string dir
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93 (concat "[" (char-to-string directory-sep-char) "]")))))
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94 (entries nil))
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95
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96 (while components
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97 (push (concat "/" (mapconcat 'identity (reverse components)
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98 (char-to-string directory-sep-char)))
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99 entries)
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100 (pop components))
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101 (push (expand-file-name "." "~/") entries)
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102 (gtk-combo-set-popdown-strings combo-box (nreverse entries))))
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103
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104 (defun gtk-file-dialog-select-directory (dialog dir)
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105 (gtk-file-dialog-fill-directory-list dialog dir)
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106 (gtk-file-dialog-fill-file-list dialog dir)
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107 (gtk-file-dialog-update-dropdown dialog dir))
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108
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109 (defun gtk-file-dialog-new (&rest keywords)
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110 "Create a XEmacs file selection dialog.
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111 Optional keyword arguments allowed:
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112
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113 :title The title of the dialog
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114 :initial-directory Initial directory to show
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115 :filter-list List of filter descriptions and filters
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116 :file-must-exist Whether the file must exist or not
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117 :directory Look for a directory instead
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118 :callback Function to call with one arg, the selection
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119 "
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120 (let* ((dialog (gtk-dialog-new))
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121 (vbox (gtk-dialog-vbox dialog))
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122 (dir (plist-get keywords :initial-directory default-directory))
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123 (button-area (gtk-dialog-action-area dialog))
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124 (initializing-gtk-file-dialog t)
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125 (select-box nil)
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126 button hbox)
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127
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128 (put dialog 'type 'dialog)
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129
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130 (gtk-window-set-title dialog (plist-get keywords :title "Select a file..."))
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131
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132 (setq button (gtk-button-new-with-label "OK"))
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133 (gtk-container-add button-area button)
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134 (gtk-signal-connect button 'clicked
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135 (lambda (button dialog)
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136 (funcall
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137 (get dialog 'x-file-dialog-callback 'ignore)
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138 (gtk-entry-get-text
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139 (get dialog 'x-file-dialog-entry nil)))
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140 (gtk-widget-destroy dialog))
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141 dialog)
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142 (put dialog 'x-file-dialog-ok-button button)
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143
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144 (setq button (gtk-button-new-with-label "Cancel"))
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145 (gtk-container-add button-area button)
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146 (gtk-signal-connect button 'clicked
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147 (lambda (button dialog)
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148 (gtk-widget-destroy dialog)) dialog)
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149
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150 (put dialog 'x-file-dialog-cancel-button button)
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151 (put dialog 'x-file-dialog-callback (plist-get keywords :callback 'ignore))
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152 (put dialog 'x-file-dialog-construct-args keywords)
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153 (put dialog 'x-file-dialog-current-dir dir)
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154
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155 ;; Dropdown list of directories...
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156 (setq select-box (gtk-combo-new))
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157 (gtk-combo-disable-activate select-box)
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158 (gtk-box-pack-start vbox select-box nil nil 5)
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159 (put dialog 'x-file-dialog-select-list select-box)
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160
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161 ;; Hitting return in the entry will change dirs...
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162 (gtk-signal-connect (gtk-combo-entry select-box) 'activate
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163 (lambda (entry dialog)
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164 (gtk-file-dialog-select-directory dialog
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165 (gtk-entry-get-text entry)))
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166 dialog)
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167
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168 ;; Start laying out horizontally...
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169 (setq hbox (gtk-hbox-new nil 0))
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170 (gtk-box-pack-start vbox hbox t t 5)
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171
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172 ;; Directory listing
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173 (let ((directories (gtk-clist-new-with-titles 1 '("Directories")))
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174 (scrolled (gtk-scrolled-window-new nil nil))
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175 (item nil))
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176 (gtk-container-add scrolled directories)
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177 (gtk-widget-set-usize scrolled 200 300)
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178 (gtk-box-pack-start hbox scrolled t t 0)
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179 (put dialog 'x-file-dialog-directory-list directories)
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180 (put dialog 'x-file-dialog-directory-scrolled scrolled)
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181
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182 (gtk-signal-connect directories 'select-row
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183 (lambda (list row column event dialog)
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184 (let ((dir (expand-file-name
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185 (gtk-clist-get-text
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186 (get dialog 'x-file-dialog-directory-list)
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187 row column)
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188 (get dialog 'x-file-dialog-current-dir))))
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189 (if (and (misc-user-event-p event)
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190 (event-function event))
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191 (gtk-file-dialog-select-directory dialog dir)
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192 (gtk-entry-set-text
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193 (get dialog 'x-file-dialog-entry)
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194 dir))))
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195 dialog)
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196 )
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197
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198 (if (plist-get keywords :directory nil)
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199 ;; Directory listings only do not need the file or filters buttons.
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200 nil
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201 ;; File listing
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202 (let ((list (gtk-clist-new-with-titles 1 '("Files")))
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203 (scrolled (gtk-scrolled-window-new nil nil)))
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204 (gtk-container-add scrolled list)
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205 (gtk-widget-set-usize scrolled 200 300)
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206 (gtk-box-pack-start hbox scrolled t t 0)
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207
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208 (gtk-signal-connect list 'select-row
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209 (lambda (list row column event dialog)
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210 (gtk-entry-set-text
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211 (get dialog 'x-file-dialog-entry nil)
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212 (expand-file-name
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213 (gtk-clist-get-text list row column)
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214 (get dialog 'x-file-dialog-current-dir nil)))
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215 (if (and (misc-user-event-p event)
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216 (event-function event))
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217 ;; Got a double or triple click event...
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218 (gtk-button-clicked
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219 (get dialog 'x-file-dialog-ok-button nil))))
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220 dialog)
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221
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222 (put dialog 'x-file-dialog-files-list list))
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223
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224 ;; Filters
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225 (if (not (plist-get keywords :filter-list nil))
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226 ;; Don't need to bother packing this
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227 nil
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228 (setq hbox (gtk-hbox-new nil 0))
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229 (gtk-box-pack-start vbox hbox nil nil 0)
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230
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231 (let ((label nil)
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232 (options (plist-get keywords :filter-list nil))
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233 (omenu nil)
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234 (menu nil)
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235 (item nil))
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236 (setq omenu (gtk-option-menu-new)
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237 menu (gtk-menu-new)
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238 label (gtk-label-new "Filter: "))
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239
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240 (put dialog 'x-file-dialog-active-filter (cdr (car options)))
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241 (mapc (lambda (o)
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242 (setq item (gtk-menu-item-new-with-label (car o)))
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243 (gtk-signal-connect item 'activate
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244 (lambda (obj data)
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245 (put (car data) 'x-file-dialog-active-filter (cdr data))
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246 (gtk-file-dialog-fill-file-list (car data) nil))
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247 (cons dialog (cdr o)))
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248 (gtk-menu-append menu item)
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249 (gtk-widget-show item)) options)
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250 (gtk-option-menu-set-menu omenu menu)
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251 (gtk-box-pack-end hbox omenu nil nil 0)
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252 (gtk-box-pack-end hbox label nil nil 0))))
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253
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254 ;; Entry
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255 (let ((entry (gtk-entry-new)))
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256 (if (plist-get keywords :directory nil)
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257 nil
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258 (gtk-box-pack-start vbox entry nil nil 0))
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259 (if (plist-get keywords :file-must-exist nil)
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260 (progn
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261 (gtk-widget-set-sensitive (get dialog 'x-file-dialog-ok-button nil) nil)
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262 (gtk-signal-connect entry 'changed
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263 (lambda (entry dialog)
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264 (gtk-widget-set-sensitive
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265 (get dialog 'x-file-dialog-ok-button)
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266 (file-exists-p (gtk-entry-get-text entry))))
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267 dialog)))
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268 (put dialog 'x-file-dialog-entry entry))
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269
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270 (gtk-widget-realize dialog)
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271
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272
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273 ;; Populate the file list if necessary
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274 (gtk-file-dialog-select-directory dialog dir)
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275 dialog))
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276
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277 (provide 'gtk-file-dialog)
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