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POPython: How to get progressbar start() info from one window (class) to other
 

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  1. POPython: How to get progressbar start() info from one window (class) to other
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    <p>There is a main window with menu and the progressbar. A correspondence window with OK button opens upon menu command and the OK button starts the process (here: 3 sec. sleep). The correspondence window is created via inheritance from a class I have not provided here (If required for answer, please let me know). The methods <code>apply</code> and <code>ok</code> override existing methods in the mother class.</p> <p>Now my problem: Since the progressbar sits in the main window (class App) and <code>progressbar(start)</code> and <code>progressbar(stop)</code> in the correspondence window I somehow have to pass (start) and (stop) via the mother class tkSimpleDialog.Dialog to class App. So I thought I also override the <code>__init__(self..)</code> method, provide <code>self.</code> to progressbar.</p> <p>How can I make this work?</p> <pre><code>import Tkinter, ttk, tkFileDialog, tkSimpleDialog, time, threading class App: def __init__(self, master, progressbar): self.progress_line(master) def progress_line (self, master): self.progressbar = ttk.Progressbar(master, mode='indeterminate') self.progressbar.place(anchor = 'ne', height = "20", width = "150", x = "175", y = "30") class AppMenu(object): def __init__(self, master, progressbar): self.master = master self.menu_bar() def menu_bar(self): menu_bar = Tkinter.Menu(self.master) self.menu_bar = Tkinter.Menu(self.master) self.master.config(menu=self.menu_bar) self.create_menu = Tkinter.Menu(self.menu_bar, tearoff = False) self.create_menu.add_command(label = "do", command = self.do) self.menu_bar.add_cascade(label = "now", menu = self.create_menu) def do(self): do1 = Dialog(self.master, progressbar) class Dialog(tkSimpleDialog.Dialog): def __init__(self, parent, progressbar): tkSimpleDialog.Dialog.__init__(self, parent, progressbar) self.transient(parent) self.parent = parent self.result = None self.progressbar = progressbar body = Frame(self) self.initial_focus = self.body(body) body.pack(padx=5, pady=5) self.buttonbox() self.grab_set() if not self.initial_focus: self.initial_focus = self self.protocol("WM_DELETE_WINDOW", self.cancel) self.geometry("+%d+%d" % (parent.winfo_rootx()+50, parent.winfo_rooty()+50)) self.initial_focus.focus_set() self.wait_window(self) def ok(self, event=None): self.withdraw() self.start_foo_thread() self.cancel() def apply(self): time.sleep(5) def start_foo_thread(self): global foo_thread self.foo_thread = threading.Thread(target=self.apply) self.foo_thread.daemon = True self.progressbar.start() self.foo_thread.start() master.after(20, check_foo_thread) def check_foo_thread(self): if self.foo_thread.is_alive(): root.after(20, self.check_foo_thread) else: self.progressbar.stop() master = Tkinter.Tk() progressbar = None app = App(master, progressbar) appmenu = AppMenu(master, progressbar) master.mainloop() </code></pre> <p>error messages: first after clicking ok:</p> <pre><code>Exception in Tkinter callback Traceback (most recent call last): File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk/Tkinter.py", line 1410, in __call__ File "ask-progressbar.py", line 57, in ok self.start_foo_thread() File "ask-progressbar.py", line 66, in start_foo_thread self.progressbar.start() AttributeError: Dialog2 instance has no attribute 'progressbar' </code></pre> <p>second: after closing app</p> <pre><code>Exception in Tkinter callback Traceback (most recent call last): File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk/Tkinter.py", line 1410, in __call__ File "ask-progressbar.py", line 26, in do do1 = Dialog2(self.master, progressbar) File "ask-progressbar.py", line 33, in __init__ self.transient(parent) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk/Tkinter.py", line 1652, in wm_transient TclError: can't invoke "wm" command: application has been destroyed </code></pre>
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    1. COPlease include more than just the error message you're getting -- the whole Traceback with the offending line would be helpful.
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      1. USmartineau
    2. COSorry I don't understand that info in comments. Please edit your question and add them to the end, indented 4 spaces so they will be more readable with proper line breaks.
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      1. USmartineau
    3. COOK, that's better. This may take a while to sort out...
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