Mercurial > cpython-lru_cache-weakref

annotate Lib/lib-tk/tkFileDialog.py @ 27069:ef531482bb37 legacy-trunk

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Convert Tcl path objects to strings. Fixes #661357. Provide .string attribute and __unicode for Tcl_Objs.
author Martin v. Löwis <martin@v.loewis.de>
date Sat, 04 Jan 2003 00:08:09 +0000
parents 6d35d4292dec
children 1ab9978123be
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1 #
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2 # Instant Python
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3 # $Id$
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4 #
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5 # tk common file dialogues
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6 #
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7 # this module provides interfaces to the native file dialogues
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8 # available in Tk 4.2 and newer, and the directory dialogue available
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9 # in Tk 8.3 and newer.
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10 #
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11 # written by Fredrik Lundh, May 1997.
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12 #
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13
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14 #
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15 # options (all have default values):
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16 #
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17 # - defaultextension: added to filename if not explicitly given
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18 #
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19 # - filetypes: sequence of (label, pattern) tuples. the same pattern
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20 # may occur with several patterns. use "*" as pattern to indicate
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21 # all files.
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22 #
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23 # - initialdir: initial directory. preserved by dialog instance.
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24 #
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25 # - initialfile: initial file (ignored by the open dialog). preserved
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26 # by dialog instance.
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27 #
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28 # - parent: which window to place the dialog on top of
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29 #
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30 # - title: dialog title
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31 #
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32 # - multiple: if true user may select more than one file
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33 #
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34 # options for the directory chooser:
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35 #
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36 # - initialdir, parent, title: see above
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37 #
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38 # - mustexist: if true, user must pick an existing directory
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39 #
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40 #
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41
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42
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43 from tkCommonDialog import Dialog
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44
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45 class _Dialog(Dialog):
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46
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47 def _fixoptions(self):
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48 try:
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49 # make sure "filetypes" is a tuple
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50 self.options["filetypes"] = tuple(self.options["filetypes"])
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51 except KeyError:
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52 pass
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53
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54 def _fixresult(self, widget, result):
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55 if result:
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56 # keep directory and filename until next time
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57 import os
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58 # convert Tcl path objects to strings
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59 try:
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60 result = result.string
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61 except AttributeError:
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62 # it already is a string
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63 pass
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64 path, file = os.path.split(result)
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65 self.options["initialdir"] = path
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66 self.options["initialfile"] = file
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67 self.filename = result # compatibility
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68 return result
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69
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70
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71 #
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72 # file dialogs
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73
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74 class Open(_Dialog):
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75 "Ask for a filename to open"
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76
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77 command = "tk_getOpenFile"
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78
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79 class SaveAs(_Dialog):
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80 "Ask for a filename to save as"
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81
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82 command = "tk_getSaveFile"
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83
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84
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85 # the directory dialog has its own _fix routines.
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86 class Directory(Dialog):
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87 "Ask for a directory"
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88
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89 command = "tk_chooseDirectory"
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90
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91 def _fixresult(self, widget, result):
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92 if result:
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93 # keep directory until next time
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94 self.options["initialdir"] = result
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95 self.directory = result # compatibility
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96 return result
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97
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98 #
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99 # convenience stuff
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100
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101 def askopenfilename(**options):
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102 "Ask for a filename to open"
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103
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104 return Open(**options).show()
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105
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106 def asksaveasfilename(**options):
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107 "Ask for a filename to save as"
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108
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109 return SaveAs(**options).show()
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110
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111 def askopenfilenames(**options):
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112 """Ask for multiple filenames to open
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113
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114 Returns a list of filenames or empty list if
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115 cancel button selected
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116 """
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117 options["multiple"]=1
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118 files=Open(**options).show()
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119 return files.split()
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120
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121
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122 # FIXME: are the following perhaps a bit too convenient?
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123
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124 def askopenfile(mode = "r", **options):
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125 "Ask for a filename to open, and returned the opened file"
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126
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127 filename = Open(**options).show()
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128 if filename:
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129 return open(filename, mode)
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130 return None
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131
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132 def askopenfiles(mode = "r", **options):
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133 """Ask for multiple filenames and return the open file
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134 objects
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135
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136 returns a list of open file objects or an empty list if
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137 cancel selected
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138 """
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139
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140 files = askopenfilenames(**options)
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141 if files:
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142 ofiles=[]
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143 for filename in files:
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144 ofiles.append(open(filename, mode))
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145 files=ofiles
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146 return files
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147
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148
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149 def asksaveasfile(mode = "w", **options):
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150 "Ask for a filename to save as, and returned the opened file"
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151
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152 filename = SaveAs(**options).show()
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153 if filename:
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154 return open(filename, mode)
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155 return None
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156
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157 def askdirectory (**options):
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158 "Ask for a directory, and return the file name"
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159 return Directory(**options).show()
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160
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161 # --------------------------------------------------------------------
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162 # test stuff
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163
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164 if __name__ == "__main__":
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165 # Since the file name may contain non-ASCII characters, we need
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166 # to find an encoding that likely supports the file name, and
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167 # displays correctly on the terminal.
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168
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169 # Start off with UTF-8
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170 enc = "utf-8"
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171 import sys
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172
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173 # See whether CODESET is defined
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174 try:
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175 import locale
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176 locale.setlocale(locale.LC_ALL,'')
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177 enc = locale.nl_langinfo(locale.CODESET)
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178 except (ImportError, AttributeError):
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179 pass
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180
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181 # dialog for openening files
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182
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183 openfilename=askopenfilename(filetypes=[("all files", "*")])
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184 try:
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185 fp=open(openfilename,"r")
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186 fp.close()
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187 except:
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188 print "Could not open File: "
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189 print sys.exc_info()[1]
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190
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191 print "open", openfilename.encode(enc)
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192
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193 # dialog for saving files
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194
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195 saveasfilename=asksaveasfilename()
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196 print "saveas", saveasfilename.encode(enc)
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197