Initial revision
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"""File selection dialog classes.
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Classes:
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- FileDialog
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- LoadFileDialog
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- SaveFileDialog
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XXX Bugs:
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- The fields are not labeled
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- Default doesn't have absolute pathname
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- Each FileDialog instance can be used only once
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- There is no easy way for an application to add widgets of its own
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"""
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from Tkinter import *
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from Dialog import Dialog
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ANCHOR = 'anchor'
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import os
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import fnmatch
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class FileDialog:
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"""Standard file selection dialog -- no checks on selected file.
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Usage:
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d = FileDialog(master)
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file = d.go(directory, pattern, default)
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if file is None: ...canceled...
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"""
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title = "File Selection Dialog"
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def __init__(self, master):
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self.master = master
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self.directory = None
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self.top = Toplevel(master)
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self.top.title(self.title)
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self.filter = Entry(self.top)
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self.filter.pack(fill=X)
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self.filter.bind('<Return>', self.filter_command)
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self.midframe = Frame(self.top)
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self.midframe.pack(expand=YES, fill=BOTH)
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self.dirs = Listbox(self.midframe)
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self.dirs.pack(side=LEFT, expand=YES, fill=BOTH)
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self.dirs.bind('<ButtonRelease-1>', self.dirs_select_event)
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self.dirs.bind('<Double-ButtonRelease-1>', self.dirs_double_event)
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self.files = Listbox(self.midframe)
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self.files.pack(side=RIGHT, expand=YES, fill=BOTH)
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self.files.bind('<ButtonRelease-1>', self.files_select_event)
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self.files.bind('<Double-ButtonRelease-1>', self.files_double_event)
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self.selection = Entry(self.top)
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self.selection.pack(fill=X)
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self.selection.bind('<Return>', self.ok_event)
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self.botframe = Frame(self.top)
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self.botframe.pack(fill=X)
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self.ok_button = Button(self.botframe,
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text="OK",
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command=self.ok_command)
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self.ok_button.pack(side=LEFT)
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self.filter_button = Button(self.botframe,
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text="Filter",
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command=self.filter_command)
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self.filter_button.pack(side=LEFT, expand=YES)
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self.cancel_button = Button(self.botframe,
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text="Cancel",
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command=self.cancel_command)
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self.cancel_button.pack(side=RIGHT)
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def go(self, directory=os.curdir, pattern="*", default=""):
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self.directory = directory
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self.set_filter(directory, pattern)
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self.set_selection(default)
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self.selection.focus_set()
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self.filter_command()
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self.top.grab_set()
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try:
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self.master.mainloop()
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except SystemExit, how:
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self.top.destroy()
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return how
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def dirs_double_event(self, event):
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## self.dirs_select_event(event)
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self.filter_command()
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def dirs_select_event(self, event):
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dir, pat = self.get_filter()
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subdir = self.dirs.get(ANCHOR)
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dir = os.path.normpath(os.path.join(self.directory, subdir))
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self.set_filter(dir, pat)
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def files_double_event(self, event):
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## self.files_select_event(event)
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## self.master.update_idletasks()
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self.ok_command()
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def files_select_event(self, event):
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file = self.files.get(ANCHOR)
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self.set_selection(file)
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def ok_event(self, event):
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self.ok_command()
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def ok_command(self):
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raise SystemExit, self.selection.get()
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def filter_command(self, event=None):
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dir, pat = self.get_filter()
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try:
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names = os.listdir(dir)
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except os.error:
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self.master.bell()
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return
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self.directory = dir
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self.set_filter(dir, pat)
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names.sort()
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subdirs = [os.pardir]
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matchingfiles = []
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for name in names:
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fullname = os.path.join(dir, name)
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if os.path.isdir(fullname):
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subdirs.append(name)
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elif fnmatch.fnmatch(name, pat):
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matchingfiles.append(name)
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self.dirs.delete(0, END)
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for name in subdirs:
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self.dirs.insert(END, name)
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self.files.delete(0, END)
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for name in matchingfiles:
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self.files.insert(END, name)
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def get_filter(self):
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filter = self.filter.get()
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if filter[-1:] == os.sep:
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filter = filter + "*"
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return os.path.split(filter)
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def cancel_command(self):
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raise SystemExit, None
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def set_filter(self, dir, pat):
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self.filter.delete(0, END)
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self.filter.insert(END, os.path.join(dir or os.curdir, pat or "*"))
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def set_selection(self, file):
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self.selection.delete(0, END)
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self.selection.insert(END, os.path.join(self.directory, file))
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class LoadFileDialog(FileDialog):
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"""File selection dialog which checks that the file exists."""
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title = "Load File Selection Dialog"
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def ok_command(self):
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file = self.selection.get()
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if not os.path.isfile(file):
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self.master.bell()
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else:
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raise SystemExit, file
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class SaveFileDialog(FileDialog):
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"""File selection dialog which checks that the file may be created."""
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title = "Save File Selection Dialog"
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def ok_command(self):
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file = self.selection.get()
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if os.path.exists(file):
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if os.path.isdir(file):
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self.master.bell()
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return
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d = Dialog(self.master,
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title="Overwrite Existing File Question",
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text="Overwrite existing file %s?" % `file`,
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bitmap='questhead',
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default=0,
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strings=("Yes", "Cancel"))
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if d.num != 0: file = None
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else:
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head, tail = os.path.split(file)
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if not os.path.isdir(head):
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self.master.bell()
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return
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raise SystemExit, file
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def test():
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"""Simple test program."""
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root = Tk()
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root.withdraw()
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fd = LoadFileDialog(root)
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loadfile = fd.go()
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fd = SaveFileDialog(root)
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savefile = fd.go()
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print loadfile, savefile
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if __name__ == '__main__':
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test()
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"""File selection dialog classes.
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Classes:
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- FileDialog
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- LoadFileDialog
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- SaveFileDialog
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XXX Bugs:
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- The fields are not labeled
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- Default doesn't have absolute pathname
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- Each FileDialog instance can be used only once
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- There is no easy way for an application to add widgets of its own
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"""
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from Tkinter import *
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from Dialog import Dialog
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ANCHOR = 'anchor'
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import os
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import fnmatch
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class FileDialog:
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"""Standard file selection dialog -- no checks on selected file.
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Usage:
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d = FileDialog(master)
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file = d.go(directory, pattern, default)
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if file is None: ...canceled...
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"""
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title = "File Selection Dialog"
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def __init__(self, master):
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self.master = master
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self.directory = None
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self.top = Toplevel(master)
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self.top.title(self.title)
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self.filter = Entry(self.top)
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self.filter.pack(fill=X)
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self.filter.bind('<Return>', self.filter_command)
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self.midframe = Frame(self.top)
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self.midframe.pack(expand=YES, fill=BOTH)
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self.dirs = Listbox(self.midframe)
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self.dirs.pack(side=LEFT, expand=YES, fill=BOTH)
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self.dirs.bind('<ButtonRelease-1>', self.dirs_select_event)
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self.dirs.bind('<Double-ButtonRelease-1>', self.dirs_double_event)
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self.files = Listbox(self.midframe)
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self.files.pack(side=RIGHT, expand=YES, fill=BOTH)
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self.files.bind('<ButtonRelease-1>', self.files_select_event)
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self.files.bind('<Double-ButtonRelease-1>', self.files_double_event)
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self.selection = Entry(self.top)
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self.selection.pack(fill=X)
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self.selection.bind('<Return>', self.ok_event)
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self.botframe = Frame(self.top)
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self.botframe.pack(fill=X)
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self.ok_button = Button(self.botframe,
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text="OK",
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command=self.ok_command)
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self.ok_button.pack(side=LEFT)
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self.filter_button = Button(self.botframe,
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text="Filter",
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command=self.filter_command)
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self.filter_button.pack(side=LEFT, expand=YES)
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self.cancel_button = Button(self.botframe,
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text="Cancel",
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command=self.cancel_command)
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self.cancel_button.pack(side=RIGHT)
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def go(self, directory=os.curdir, pattern="*", default=""):
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self.directory = directory
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self.set_filter(directory, pattern)
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self.set_selection(default)
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self.selection.focus_set()
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self.filter_command()
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self.top.grab_set()
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try:
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self.master.mainloop()
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except SystemExit, how:
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self.top.destroy()
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return how
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def dirs_double_event(self, event):
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## self.dirs_select_event(event)
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self.filter_command()
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def dirs_select_event(self, event):
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dir, pat = self.get_filter()
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subdir = self.dirs.get(ANCHOR)
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dir = os.path.normpath(os.path.join(self.directory, subdir))
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self.set_filter(dir, pat)
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def files_double_event(self, event):
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## self.files_select_event(event)
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## self.master.update_idletasks()
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self.ok_command()
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def files_select_event(self, event):
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file = self.files.get(ANCHOR)
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self.set_selection(file)
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def ok_event(self, event):
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self.ok_command()
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def ok_command(self):
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raise SystemExit, self.selection.get()
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def filter_command(self, event=None):
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dir, pat = self.get_filter()
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try:
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names = os.listdir(dir)
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except os.error:
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self.master.bell()
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return
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self.directory = dir
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self.set_filter(dir, pat)
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names.sort()
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subdirs = [os.pardir]
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matchingfiles = []
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for name in names:
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fullname = os.path.join(dir, name)
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if os.path.isdir(fullname):
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subdirs.append(name)
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elif fnmatch.fnmatch(name, pat):
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matchingfiles.append(name)
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self.dirs.delete(0, END)
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for name in subdirs:
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self.dirs.insert(END, name)
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self.files.delete(0, END)
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for name in matchingfiles:
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self.files.insert(END, name)
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def get_filter(self):
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filter = self.filter.get()
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if filter[-1:] == os.sep:
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filter = filter + "*"
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return os.path.split(filter)
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def cancel_command(self):
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raise SystemExit, None
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def set_filter(self, dir, pat):
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self.filter.delete(0, END)
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self.filter.insert(END, os.path.join(dir or os.curdir, pat or "*"))
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def set_selection(self, file):
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self.selection.delete(0, END)
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self.selection.insert(END, os.path.join(self.directory, file))
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class LoadFileDialog(FileDialog):
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"""File selection dialog which checks that the file exists."""
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title = "Load File Selection Dialog"
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def ok_command(self):
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file = self.selection.get()
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if not os.path.isfile(file):
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self.master.bell()
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else:
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raise SystemExit, file
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class SaveFileDialog(FileDialog):
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"""File selection dialog which checks that the file may be created."""
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title = "Save File Selection Dialog"
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def ok_command(self):
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file = self.selection.get()
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if os.path.exists(file):
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if os.path.isdir(file):
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self.master.bell()
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return
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d = Dialog(self.master,
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title="Overwrite Existing File Question",
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text="Overwrite existing file %s?" % `file`,
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bitmap='questhead',
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default=0,
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strings=("Yes", "Cancel"))
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if d.num != 0: file = None
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else:
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head, tail = os.path.split(file)
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if not os.path.isdir(head):
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self.master.bell()
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return
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raise SystemExit, file
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def test():
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"""Simple test program."""
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root = Tk()
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root.withdraw()
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fd = LoadFileDialog(root)
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loadfile = fd.go()
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fd = SaveFileDialog(root)
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savefile = fd.go()
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print loadfile, savefile
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if __name__ == '__main__':
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test()
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