/usr/lib/python2.7/lib-tk/FileDialog.py is in libpython2.7-stdlib 2.7.6-8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 | """File selection dialog classes.
Classes:
- FileDialog
- LoadFileDialog
- SaveFileDialog
"""
from Tkinter import *
from Dialog import Dialog
import os
import fnmatch
dialogstates = {}
class FileDialog:
"""Standard file selection dialog -- no checks on selected file.
Usage:
d = FileDialog(master)
fname = d.go(dir_or_file, pattern, default, key)
if fname is None: ...canceled...
else: ...open file...
All arguments to go() are optional.
The 'key' argument specifies a key in the global dictionary
'dialogstates', which keeps track of the values for the directory
and pattern arguments, overriding the values passed in (it does
not keep track of the default argument!). If no key is specified,
the dialog keeps no memory of previous state. Note that memory is
kept even when the dialog is canceled. (All this emulates the
behavior of the Macintosh file selection dialogs.)
"""
title = "File Selection Dialog"
def __init__(self, master, title=None):
if title is None: title = self.title
self.master = master
self.directory = None
self.top = Toplevel(master)
self.top.title(title)
self.top.iconname(title)
self.botframe = Frame(self.top)
self.botframe.pack(side=BOTTOM, fill=X)
self.selection = Entry(self.top)
self.selection.pack(side=BOTTOM, fill=X)
self.selection.bind('<Return>', self.ok_event)
self.filter = Entry(self.top)
self.filter.pack(side=TOP, fill=X)
self.filter.bind('<Return>', self.filter_command)
self.midframe = Frame(self.top)
self.midframe.pack(expand=YES, fill=BOTH)
self.filesbar = Scrollbar(self.midframe)
self.filesbar.pack(side=RIGHT, fill=Y)
self.files = Listbox(self.midframe, exportselection=0,
yscrollcommand=(self.filesbar, 'set'))
self.files.pack(side=RIGHT, expand=YES, fill=BOTH)
btags = self.files.bindtags()
self.files.bindtags(btags[1:] + btags[:1])
self.files.bind('<ButtonRelease-1>', self.files_select_event)
self.files.bind('<Double-ButtonRelease-1>', self.files_double_event)
self.filesbar.config(command=(self.files, 'yview'))
self.dirsbar = Scrollbar(self.midframe)
self.dirsbar.pack(side=LEFT, fill=Y)
self.dirs = Listbox(self.midframe, exportselection=0,
yscrollcommand=(self.dirsbar, 'set'))
self.dirs.pack(side=LEFT, expand=YES, fill=BOTH)
self.dirsbar.config(command=(self.dirs, 'yview'))
btags = self.dirs.bindtags()
self.dirs.bindtags(btags[1:] + btags[:1])
self.dirs.bind('<ButtonRelease-1>', self.dirs_select_event)
self.dirs.bind('<Double-ButtonRelease-1>', self.dirs_double_event)
self.ok_button = Button(self.botframe,
text="OK",
command=self.ok_command)
self.ok_button.pack(side=LEFT)
self.filter_button = Button(self.botframe,
text="Filter",
command=self.filter_command)
self.filter_button.pack(side=LEFT, expand=YES)
self.cancel_button = Button(self.botframe,
text="Cancel",
command=self.cancel_command)
self.cancel_button.pack(side=RIGHT)
self.top.protocol('WM_DELETE_WINDOW', self.cancel_command)
# XXX Are the following okay for a general audience?
self.top.bind('<Alt-w>', self.cancel_command)
self.top.bind('<Alt-W>', self.cancel_command)
def go(self, dir_or_file=os.curdir, pattern="*", default="", key=None):
if key and key in dialogstates:
self.directory, pattern = dialogstates[key]
else:
dir_or_file = os.path.expanduser(dir_or_file)
if os.path.isdir(dir_or_file):
self.directory = dir_or_file
else:
self.directory, default = os.path.split(dir_or_file)
self.set_filter(self.directory, pattern)
self.set_selection(default)
self.filter_command()
self.selection.focus_set()
self.top.wait_visibility() # window needs to be visible for the grab
self.top.grab_set()
self.how = None
self.master.mainloop() # Exited by self.quit(how)
if key:
directory, pattern = self.get_filter()
if self.how:
directory = os.path.dirname(self.how)
dialogstates[key] = directory, pattern
self.top.destroy()
return self.how
def quit(self, how=None):
self.how = how
self.master.quit() # Exit mainloop()
def dirs_double_event(self, event):
self.filter_command()
def dirs_select_event(self, event):
dir, pat = self.get_filter()
subdir = self.dirs.get('active')
dir = os.path.normpath(os.path.join(self.directory, subdir))
self.set_filter(dir, pat)
def files_double_event(self, event):
self.ok_command()
def files_select_event(self, event):
file = self.files.get('active')
self.set_selection(file)
def ok_event(self, event):
self.ok_command()
def ok_command(self):
self.quit(self.get_selection())
def filter_command(self, event=None):
dir, pat = self.get_filter()
try:
names = os.listdir(dir)
except os.error:
self.master.bell()
return
self.directory = dir
self.set_filter(dir, pat)
names.sort()
subdirs = [os.pardir]
matchingfiles = []
for name in names:
fullname = os.path.join(dir, name)
if os.path.isdir(fullname):
subdirs.append(name)
elif fnmatch.fnmatch(name, pat):
matchingfiles.append(name)
self.dirs.delete(0, END)
for name in subdirs:
self.dirs.insert(END, name)
self.files.delete(0, END)
for name in matchingfiles:
self.files.insert(END, name)
head, tail = os.path.split(self.get_selection())
if tail == os.curdir: tail = ''
self.set_selection(tail)
def get_filter(self):
filter = self.filter.get()
filter = os.path.expanduser(filter)
if filter[-1:] == os.sep or os.path.isdir(filter):
filter = os.path.join(filter, "*")
return os.path.split(filter)
def get_selection(self):
file = self.selection.get()
file = os.path.expanduser(file)
return file
def cancel_command(self, event=None):
self.quit()
def set_filter(self, dir, pat):
if not os.path.isabs(dir):
try:
pwd = os.getcwd()
except os.error:
pwd = None
if pwd:
dir = os.path.join(pwd, dir)
dir = os.path.normpath(dir)
self.filter.delete(0, END)
self.filter.insert(END, os.path.join(dir or os.curdir, pat or "*"))
def set_selection(self, file):
self.selection.delete(0, END)
self.selection.insert(END, os.path.join(self.directory, file))
class LoadFileDialog(FileDialog):
"""File selection dialog which checks that the file exists."""
title = "Load File Selection Dialog"
def ok_command(self):
file = self.get_selection()
if not os.path.isfile(file):
self.master.bell()
else:
self.quit(file)
class SaveFileDialog(FileDialog):
"""File selection dialog which checks that the file may be created."""
title = "Save File Selection Dialog"
def ok_command(self):
file = self.get_selection()
if os.path.exists(file):
if os.path.isdir(file):
self.master.bell()
return
d = Dialog(self.top,
title="Overwrite Existing File Question",
text="Overwrite existing file %r?" % (file,),
bitmap='questhead',
default=1,
strings=("Yes", "Cancel"))
if d.num != 0:
return
else:
head, tail = os.path.split(file)
if not os.path.isdir(head):
self.master.bell()
return
self.quit(file)
def test():
"""Simple test program."""
root = Tk()
root.withdraw()
fd = LoadFileDialog(root)
loadfile = fd.go(key="test")
fd = SaveFileDialog(root)
savefile = fd.go(key="test")
print loadfile, savefile
if __name__ == '__main__':
test()
|