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#!/usr/bin/env python |
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"""Graphical interface for DropTheBeat.""" |
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import sys |
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from unittest.mock import Mock |
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try: |
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import tkinter as tk |
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from tkinter import ttk |
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from tkinter import messagebox, simpledialog, filedialog |
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except ImportError as err: |
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sys.stderr.write("WARNING: {}\n".format(err)) |
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tk = Mock() |
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ttk = Mock() |
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import os |
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import argparse |
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from itertools import chain |
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import logging |
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from dtb import GUI, __version__ |
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from dtb import share, user |
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from dtb.common import SHARED, WarningFormatter |
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from dtb import settings |
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_LAUNCH = True |
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class Application(ttk.Frame): # pylint: disable=too-many-instance-attributes |
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"""Tkinter application for DropTheBeat.""" |
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def __init__(self, master=None, root=None, home=None, name=None): |
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ttk.Frame.__init__(self, master) |
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# Load the root sharing directory |
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self.root = root or share.find(home) |
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# Load the user |
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self.user = user.User(os.path.join(self.root, name)) if name else None |
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try: |
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self.user = self.user or user.get_current(self.root) |
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except EnvironmentError: |
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while True: |
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msg = "Enter your name in the form 'First Last':" |
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text = simpledialog.askstring("Create a User", msg) |
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logging.debug("text: {}".format(repr(text))) |
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name = text.strip(" '") if text else None |
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if not name: |
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raise KeyboardInterrupt("no user specified") |
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try: |
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self.user = user.User.new(self.root, name) |
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except EnvironmentError: |
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existing = user.User(os.path.join(self.root, name)) |
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msg = "Is this you:" |
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for info in existing.info: |
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msg += "\n\n'{}' on '{}'".format(info[1], info[0]) |
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if not existing.info or \ |
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messagebox.askyesno("Add to Existing User", msg): |
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self.user = user.User.add(self.root, name) |
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break |
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else: |
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break |
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# Create variables |
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self.path_root = tk.StringVar(value=self.root) |
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self.path_downloads = tk.StringVar(value=self.user.path_downloads) |
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self.outgoing = [] |
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self.incoming = [] |
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# Initialize the GUI |
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self.listbox_outgoing = None |
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self.listbox_incoming = None |
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frame = self.init(master) |
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frame.pack(fill=tk.BOTH, expand=1) |
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# Show the GUI |
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master.deiconify() |
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self.update() |
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def init(self, root): |
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"""Initialize frames and widgets.""" |
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# pylint: disable=line-too-long |
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mac = sys.platform == 'darwin' |
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# Shared keyword arguments |
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kw_f = {'padding': 5} # constructor arguments for frames |
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kw_gp = {'padx': 5, 'pady': 5} # grid arguments for padded widgets |
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kw_gs = {'sticky': tk.NSEW} # grid arguments for sticky widgets |
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kw_gsp = dict(chain(kw_gs.items(), kw_gp.items())) # grid arguments for sticky padded widgets |
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# Configure grid |
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frame = ttk.Frame(root, **kw_f) |
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frame.rowconfigure(0, weight=0) |
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frame.rowconfigure(2, weight=1) |
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frame.rowconfigure(4, weight=1) |
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frame.columnconfigure(0, weight=1) |
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# Create widgets |
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def frame_settings(master): |
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"""Frame for the settings.""" |
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frame = ttk.Frame(master, **kw_f) |
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# Configure grid |
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frame.rowconfigure(0, weight=1) |
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frame.rowconfigure(1, weight=1) |
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frame.columnconfigure(0, weight=0) |
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frame.columnconfigure(1, weight=1) |
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frame.columnconfigure(2, weight=0) |
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# Place widgets |
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ttk.Label(frame, text="Shared:").grid(row=0, column=0, sticky=tk.W, **kw_gp) |
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ttk.Entry(frame, state='readonly', textvariable=self.path_root).grid(row=0, column=1, columnspan=2, **kw_gsp) |
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ttk.Label(frame, text="Downloads:").grid(row=1, column=0, sticky=tk.W, **kw_gp) |
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ttk.Entry(frame, state='readonly', textvariable=self.path_downloads).grid(row=1, column=1, **kw_gsp) |
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ttk.Button(frame, text="...", width=0, command=self.browse_downloads).grid(row=1, column=2, ipadx=5, **kw_gp) |
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return frame |
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View Code Duplication |
def frame_incoming(master): |
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"""Frame for incoming songs.""" |
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frame = ttk.Frame(master, **kw_f) |
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# Configure grid |
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frame.rowconfigure(0, weight=1) |
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frame.rowconfigure(1, weight=0) |
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frame.columnconfigure(0, weight=0) |
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frame.columnconfigure(1, weight=1) |
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frame.columnconfigure(2, weight=1) |
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# Place widgets |
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self.listbox_incoming = tk.Listbox(frame, selectmode=tk.EXTENDED if mac else tk.MULTIPLE) |
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self.listbox_incoming.grid(row=0, column=0, columnspan=3, **kw_gsp) |
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scroll_incoming = ttk.Scrollbar(frame, orient=tk.VERTICAL, command=self.listbox_incoming.yview) |
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self.listbox_incoming.configure(yscrollcommand=scroll_incoming.set) |
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scroll_incoming.grid(row=0, column=2, sticky=(tk.N, tk.E, tk.S)) |
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ttk.Button(frame, text="\u21BB", width=0, command=self.update).grid(row=1, column=0, sticky=tk.SW, ipadx=5, **kw_gp) |
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ttk.Button(frame, text="Ignore Selected", command=self.do_ignore).grid(row=1, column=1, sticky=tk.SW, ipadx=5, **kw_gp) |
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ttk.Button(frame, text="Download Selected", command=self.do_download).grid(row=1, column=2, sticky=tk.SE, ipadx=5, **kw_gp) |
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return frame |
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View Code Duplication |
def frame_outgoing(master): |
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"""Frame for outgoing songs.""" |
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frame = ttk.Frame(master, **kw_f) |
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# Configure grid |
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frame.rowconfigure(0, weight=1) |
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frame.rowconfigure(1, weight=0) |
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frame.columnconfigure(0, weight=0) |
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frame.columnconfigure(1, weight=1) |
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frame.columnconfigure(2, weight=1) |
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# Place widgets |
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self.listbox_outgoing = tk.Listbox(frame, selectmode=tk.EXTENDED if mac else tk.MULTIPLE) |
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self.listbox_outgoing.grid(row=0, column=0, columnspan=3, **kw_gsp) |
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scroll_outgoing = ttk.Scrollbar(frame, orient=tk.VERTICAL, command=self.listbox_outgoing.yview) |
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self.listbox_outgoing.configure(yscrollcommand=scroll_outgoing.set) |
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scroll_outgoing.grid(row=0, column=2, sticky=(tk.N, tk.E, tk.S)) |
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ttk.Button(frame, text="\u21BB", width=0, command=self.update).grid(row=1, column=0, sticky=tk.SW, ipadx=5, **kw_gp) |
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ttk.Button(frame, text="Remove Selected", command=self.do_remove).grid(row=1, column=1, sticky=tk.SW, ipadx=5, **kw_gp) |
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ttk.Button(frame, text="Share Songs...", command=self.do_share).grid(row=1, column=2, sticky=tk.SE, ipadx=5, **kw_gp) |
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return frame |
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def separator(master): |
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"""Widget to separate frames.""" |
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return ttk.Separator(master) |
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# Place widgets |
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frame_settings(frame).grid(row=0, **kw_gs) |
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separator(frame).grid(row=1, padx=10, pady=5, **kw_gs) |
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frame_outgoing(frame).grid(row=2, **kw_gs) |
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separator(frame).grid(row=3, padx=10, pady=5, **kw_gs) |
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frame_incoming(frame).grid(row=4, **kw_gs) |
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return frame |
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def browse_downloads(self): |
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"""Browser for a new downloads directory.""" |
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path = filedialog.askdirectory() |
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logging.debug("path: {}".format(path)) |
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if path: |
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self.user.path_downloads = path |
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self.path_downloads.set(self.user.path_downloads) |
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def do_remove(self): |
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"""Remove selected songs.""" |
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for index in (int(s) for s in self.listbox_outgoing.curselection()): |
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self.outgoing[index].ignore() |
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self.update() |
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def do_share(self): |
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"""Share songs.""" |
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paths = filedialog.askopenfilenames() |
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if isinstance(paths, str): # http://bugs.python.org/issue5712 |
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paths = self.master.tk.splitlist(paths) |
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logging.debug("paths: {}".format(paths)) |
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for path in paths: |
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self.user.recommend(path) |
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self.update() |
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def do_ignore(self): |
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"""Ignore selected songs.""" |
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for index in (int(s) for s in self.listbox_incoming.curselection()): |
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song = self.incoming[index] |
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song.ignore() |
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self.update() |
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def do_download(self): |
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"""Download selected songs.""" |
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indicies = (int(s) for s in self.listbox_incoming.curselection()) |
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try: |
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for index in indicies: |
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song = self.incoming[index] |
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song.download(catch=False) |
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except IOError as exc: |
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self.show_error_from_exception(exc, "Download Error") |
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self.update() |
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def update(self): |
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"""Update the list of outgoing and incoming songs.""" |
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# Cleanup outgoing songs |
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self.user.cleanup() |
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# Update outgoing songs list |
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logging.info("updating outgoing songs...") |
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self.outgoing = list(self.user.outgoing) |
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self.listbox_outgoing.delete(0, tk.END) |
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for song in self.outgoing: |
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self.listbox_outgoing.insert(tk.END, song.out_string) |
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# Update incoming songs list |
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logging.info("updating incoming songs...") |
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self.incoming = list(self.user.incoming) |
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self.listbox_incoming.delete(0, tk.END) |
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for song in self.incoming: |
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self.listbox_incoming.insert(tk.END, song.in_string) |
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@staticmethod |
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def show_error_from_exception(exception, title="Error"): |
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"""Convert an exception to an error dialog.""" |
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message = str(exception) |
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message = message[0].upper() + message[1:] |
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if ": " in message: |
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message.replace(": ", ":\n\n") |
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else: |
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message += "." |
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messagebox.showerror(title, message) |
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def main(args=None): |
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"""Process command-line arguments and run the program.""" |
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# Main parser |
259
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parser = argparse.ArgumentParser(prog=GUI, description=__doc__, **SHARED) |
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parser.add_argument('--home', metavar='PATH', help="path to home directory") |
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# Hidden argument to override the root sharing directory path |
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parser.add_argument('--root', metavar="PATH", help=argparse.SUPPRESS) |
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# Hidden argument to run the program as a different user |
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parser.add_argument('--test', metavar='"First Last"', |
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help=argparse.SUPPRESS) |
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267
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# Parse arguments |
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args = parser.parse_args(args=args) |
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270
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# Configure logging |
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_configure_logging(args.verbose) |
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# Run the program |
274
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try: |
275
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success = run(args) |
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except KeyboardInterrupt: |
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logging.debug("program manually closed") |
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else: |
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if success: |
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logging.debug("program exited") |
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else: |
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logging.debug("program exited with error") |
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sys.exit(1) |
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285
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def _configure_logging(verbosity=0): |
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"""Configure logging using the provided verbosity level (0+).""" |
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289
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# Configure the logging level and format |
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if verbosity == 0: |
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level = settings.VERBOSE_LOGGING_LEVEL |
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default_format = settings.DEFAULT_LOGGING_FORMAT |
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verbose_format = settings.VERBOSE_LOGGING_FORMAT |
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else: |
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level = settings.VERBOSE2_LOGGING_LEVEL |
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default_format = verbose_format = settings.VERBOSE_LOGGING_FORMAT |
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# Set a custom formatter |
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logging.basicConfig(level=level) |
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formatter = WarningFormatter(default_format, verbose_format) |
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logging.root.handlers[0].setFormatter(formatter) |
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def run(args): |
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"""Start the GUI.""" |
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# Exit if tkinter is not available |
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1 |
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if isinstance(tk, Mock) or isinstance(ttk, Mock): |
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logging.error("tkinter is not available") |
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return False |
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root = tk.Tk() |
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root.title("{} (v{})".format(GUI, __version__)) |
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root.minsize(500, 500) |
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316
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# Map the Mac 'command' key to 'control' |
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if sys.platform == 'darwin': |
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root.bind_class('Listbox', '<Command-Button-1>', |
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|
|
|
root.bind_class('Listbox', '<Control-Button-1>')) |
320
|
|
|
|
321
|
|
|
# Temporarily hide the window for other dialogs |
322
|
|
|
root.withdraw() |
323
|
|
|
|
324
|
|
|
# Start the application |
325
|
|
|
try: |
326
|
|
|
app = Application(master=root, home=args.home, |
327
|
|
|
root=args.root, name=args.test) |
328
|
|
|
if _LAUNCH: |
329
|
|
|
app.mainloop() |
330
|
|
|
except Exception as e: # pylint: disable=broad-except |
331
|
|
|
Application.show_error_from_exception(e) |
332
|
|
|
return False |
333
|
|
|
|
334
|
|
|
return True |
335
|
|
|
|
336
|
|
|
|
337
|
|
|
if __name__ == '__main__': # pragma: no cover (manual test) |
338
|
|
|
main() |
339
|
|
|
|
Generally, there is nothing wrong with usage of
*
or**
arguments. For readability of the code base, we suggest to not over-use these language constructs though.For more information, we can recommend this blog post from Ned Batchelder including its comments which also touches this aspect.