Mercurial > cpython-lru_cache-weakref
annotate Lib/lib-tk/FileDialog.py @ 39042:c02fa187e0f4 legacy-trunk
Part of SF patch #1484695. This removes dead code. The chksum was
already verified in .frombuf() on the lines above. If there was
a problem an exception is raised, so there was no way this condition
could have been true.
| author | Neal Norwitz <nnorwitz@gmail.com> |
|---|---|
| date | Mon, 10 Jul 2006 00:23:17 +0000 |
| parents | 22ded309648b |
| children | 0f135affabf2 |
| rev | line source |
|---|---|
| 3031 | 1 """File selection dialog classes. |
| 2 | |
| 3 Classes: | |
| 4 | |
| 5 - FileDialog | |
| 6 - LoadFileDialog | |
| 7 - SaveFileDialog | |
| 8 | |
| 9 """ | |
| 10 | |
| 11 from Tkinter import * | |
| 12 from Dialog import Dialog | |
| 13 | |
| 14 import os | |
| 15 import fnmatch | |
| 16 | |
| 17 | |
| 3643 | 18 dialogstates = {} |
| 19 | |
| 20 | |
| 3031 | 21 class FileDialog: |
| 22 | |
| 23 """Standard file selection dialog -- no checks on selected file. | |
| 24 | |
| 25 Usage: | |
| 26 | |
| 27 d = FileDialog(master) | |
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28 fname = d.go(dir_or_file, pattern, default, key) |
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29 if fname is None: ...canceled... |
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30 else: ...open file... |
| 3643 | 31 |
| 32 All arguments to go() are optional. | |
| 33 | |
| 34 The 'key' argument specifies a key in the global dictionary | |
| 35 'dialogstates', which keeps track of the values for the directory | |
| 36 and pattern arguments, overriding the values passed in (it does | |
| 37 not keep track of the default argument!). If no key is specified, | |
| 38 the dialog keeps no memory of previous state. Note that memory is | |
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39 kept even when the dialog is canceled. (All this emulates the |
| 3643 | 40 behavior of the Macintosh file selection dialogs.) |
| 3031 | 41 |
| 42 """ | |
| 43 | |
| 44 title = "File Selection Dialog" | |
| 45 | |
| 3643 | 46 def __init__(self, master, title=None): |
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47 if title is None: title = self.title |
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48 self.master = master |
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49 self.directory = None |
| 3643 | 50 |
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51 self.top = Toplevel(master) |
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52 self.top.title(title) |
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53 self.top.iconname(title) |
| 3643 | 54 |
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55 self.botframe = Frame(self.top) |
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56 self.botframe.pack(side=BOTTOM, fill=X) |
| 3643 | 57 |
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58 self.selection = Entry(self.top) |
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59 self.selection.pack(side=BOTTOM, fill=X) |
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60 self.selection.bind('<Return>', self.ok_event) |
| 3643 | 61 |
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62 self.filter = Entry(self.top) |
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63 self.filter.pack(side=TOP, fill=X) |
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64 self.filter.bind('<Return>', self.filter_command) |
| 3643 | 65 |
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66 self.midframe = Frame(self.top) |
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67 self.midframe.pack(expand=YES, fill=BOTH) |
| 3643 | 68 |
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69 self.filesbar = Scrollbar(self.midframe) |
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70 self.filesbar.pack(side=RIGHT, fill=Y) |
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71 self.files = Listbox(self.midframe, exportselection=0, |
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72 yscrollcommand=(self.filesbar, 'set')) |
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73 self.files.pack(side=RIGHT, expand=YES, fill=BOTH) |
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74 btags = self.files.bindtags() |
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75 self.files.bindtags(btags[1:] + btags[:1]) |
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76 self.files.bind('<ButtonRelease-1>', self.files_select_event) |
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77 self.files.bind('<Double-ButtonRelease-1>', self.files_double_event) |
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78 self.filesbar.config(command=(self.files, 'yview')) |
| 3643 | 79 |
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80 self.dirsbar = Scrollbar(self.midframe) |
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81 self.dirsbar.pack(side=LEFT, fill=Y) |
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82 self.dirs = Listbox(self.midframe, exportselection=0, |
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83 yscrollcommand=(self.dirsbar, 'set')) |
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84 self.dirs.pack(side=LEFT, expand=YES, fill=BOTH) |
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85 self.dirsbar.config(command=(self.dirs, 'yview')) |
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86 btags = self.dirs.bindtags() |
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87 self.dirs.bindtags(btags[1:] + btags[:1]) |
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88 self.dirs.bind('<ButtonRelease-1>', self.dirs_select_event) |
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89 self.dirs.bind('<Double-ButtonRelease-1>', self.dirs_double_event) |
| 3643 | 90 |
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91 self.ok_button = Button(self.botframe, |
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92 text="OK", |
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93 command=self.ok_command) |
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94 self.ok_button.pack(side=LEFT) |
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95 self.filter_button = Button(self.botframe, |
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96 text="Filter", |
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97 command=self.filter_command) |
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98 self.filter_button.pack(side=LEFT, expand=YES) |
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99 self.cancel_button = Button(self.botframe, |
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100 text="Cancel", |
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101 command=self.cancel_command) |
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102 self.cancel_button.pack(side=RIGHT) |
| 3031 | 103 |
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104 self.top.protocol('WM_DELETE_WINDOW', self.cancel_command) |
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105 # XXX Are the following okay for a general audience? |
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106 self.top.bind('<Alt-w>', self.cancel_command) |
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107 self.top.bind('<Alt-W>', self.cancel_command) |
| 3643 | 108 |
| 109 def go(self, dir_or_file=os.curdir, pattern="*", default="", key=None): | |
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110 if key and dialogstates.has_key(key): |
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111 self.directory, pattern = dialogstates[key] |
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112 else: |
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113 dir_or_file = os.path.expanduser(dir_or_file) |
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114 if os.path.isdir(dir_or_file): |
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115 self.directory = dir_or_file |
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116 else: |
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117 self.directory, default = os.path.split(dir_or_file) |
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118 self.set_filter(self.directory, pattern) |
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119 self.set_selection(default) |
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120 self.filter_command() |
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121 self.selection.focus_set() |
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122 self.top.wait_visibility() # window needs to be visible for the grab |
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123 self.top.grab_set() |
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124 self.how = None |
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125 self.master.mainloop() # Exited by self.quit(how) |
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126 if key: |
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127 directory, pattern = self.get_filter() |
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128 if self.how: |
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129 directory = os.path.dirname(self.how) |
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130 dialogstates[key] = directory, pattern |
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131 self.top.destroy() |
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132 return self.how |
| 3643 | 133 |
| 134 def quit(self, how=None): | |
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135 self.how = how |
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136 self.master.quit() # Exit mainloop() |
| 3031 | 137 |
| 138 def dirs_double_event(self, event): | |
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139 self.filter_command() |
| 3031 | 140 |
| 141 def dirs_select_event(self, event): | |
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142 dir, pat = self.get_filter() |
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143 subdir = self.dirs.get('active') |
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144 dir = os.path.normpath(os.path.join(self.directory, subdir)) |
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145 self.set_filter(dir, pat) |
| 3031 | 146 |
| 147 def files_double_event(self, event): | |
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148 self.ok_command() |
| 3031 | 149 |
| 150 def files_select_event(self, event): | |
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151 file = self.files.get('active') |
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152 self.set_selection(file) |
| 3031 | 153 |
| 154 def ok_event(self, event): | |
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155 self.ok_command() |
| 3031 | 156 |
| 157 def ok_command(self): | |
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158 self.quit(self.get_selection()) |
| 3031 | 159 |
| 160 def filter_command(self, event=None): | |
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161 dir, pat = self.get_filter() |
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162 try: |
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163 names = os.listdir(dir) |
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164 except os.error: |
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165 self.master.bell() |
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166 return |
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167 self.directory = dir |
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168 self.set_filter(dir, pat) |
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169 names.sort() |
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170 subdirs = [os.pardir] |
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171 matchingfiles = [] |
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172 for name in names: |
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173 fullname = os.path.join(dir, name) |
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174 if os.path.isdir(fullname): |
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175 subdirs.append(name) |
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176 elif fnmatch.fnmatch(name, pat): |
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177 matchingfiles.append(name) |
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178 self.dirs.delete(0, END) |
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179 for name in subdirs: |
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180 self.dirs.insert(END, name) |
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181 self.files.delete(0, END) |
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182 for name in matchingfiles: |
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183 self.files.insert(END, name) |
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184 head, tail = os.path.split(self.get_selection()) |
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185 if tail == os.curdir: tail = '' |
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186 self.set_selection(tail) |
| 3031 | 187 |
| 188 def get_filter(self): | |
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189 filter = self.filter.get() |
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190 filter = os.path.expanduser(filter) |
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191 if filter[-1:] == os.sep or os.path.isdir(filter): |
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192 filter = os.path.join(filter, "*") |
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193 return os.path.split(filter) |
| 3031 | 194 |
| 3643 | 195 def get_selection(self): |
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196 file = self.selection.get() |
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197 file = os.path.expanduser(file) |
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198 return file |
| 3643 | 199 |
| 200 def cancel_command(self, event=None): | |
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201 self.quit() |
| 3031 | 202 |
| 203 def set_filter(self, dir, pat): | |
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204 if not os.path.isabs(dir): |
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205 try: |
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206 pwd = os.getcwd() |
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207 except os.error: |
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208 pwd = None |
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209 if pwd: |
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210 dir = os.path.join(pwd, dir) |
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211 dir = os.path.normpath(dir) |
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212 self.filter.delete(0, END) |
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213 self.filter.insert(END, os.path.join(dir or os.curdir, pat or "*")) |
| 3031 | 214 |
| 215 def set_selection(self, file): | |
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216 self.selection.delete(0, END) |
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217 self.selection.insert(END, os.path.join(self.directory, file)) |
| 3031 | 218 |
| 219 | |
| 220 class LoadFileDialog(FileDialog): | |
| 221 | |
| 222 """File selection dialog which checks that the file exists.""" | |
| 223 | |
| 224 title = "Load File Selection Dialog" | |
| 225 | |
| 226 def ok_command(self): | |
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227 file = self.get_selection() |
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228 if not os.path.isfile(file): |
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229 self.master.bell() |
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230 else: |
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231 self.quit(file) |
| 3031 | 232 |
| 233 | |
| 234 class SaveFileDialog(FileDialog): | |
| 235 | |
| 236 """File selection dialog which checks that the file may be created.""" | |
| 237 | |
| 238 title = "Save File Selection Dialog" | |
| 239 | |
| 240 def ok_command(self): | |
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241 file = self.get_selection() |
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242 if os.path.exists(file): |
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243 if os.path.isdir(file): |
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244 self.master.bell() |
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245 return |
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246 d = Dialog(self.top, |
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247 title="Overwrite Existing File Question", |
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248 text="Overwrite existing file %r?" % (file,), |
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249 bitmap='questhead', |
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250 default=1, |
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251 strings=("Yes", "Cancel")) |
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252 if d.num != 0: |
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253 return |
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254 else: |
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255 head, tail = os.path.split(file) |
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256 if not os.path.isdir(head): |
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257 self.master.bell() |
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258 return |
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259 self.quit(file) |
| 3031 | 260 |
| 261 | |
| 262 def test(): | |
| 263 """Simple test program.""" | |
| 264 root = Tk() | |
| 265 root.withdraw() | |
| 266 fd = LoadFileDialog(root) | |
| 3643 | 267 loadfile = fd.go(key="test") |
| 3031 | 268 fd = SaveFileDialog(root) |
| 3643 | 269 savefile = fd.go(key="test") |
| 3031 | 270 print loadfile, savefile |
| 271 | |
| 272 | |
| 273 if __name__ == '__main__': | |
| 274 test() |