mirror of
https://github.com/python/cpython.git
synced 2025-11-03 23:21:29 +00:00
274 lines
8.6 KiB
Python
274 lines
8.6 KiB
Python
"""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 dialogstates.has_key(key):
|
|
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()
|