view sat_frontends/primitivus/progress.py @ 3153:2c7b42f53e9a

core (xmpp): avoid starting several clients at the same time: a check is done to avoid running startConnection several times at once, which would lead to the creation of several SatXMPPEntity instances at the same time, resulting in many issues. If startConnection is called while a previous one is not finished yet, a CancelError is now raised.
author Goffi <goffi@goffi.org>
date Mon, 03 Feb 2020 13:46:24 +0100
parents 559a625a236b
children be6d91572633
line wrap: on
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#!/usr/bin/env python3


# Primitivus: a SAT frontend
# Copyright (C) 2009-2020 Jérôme Poisson (goffi@goffi.org)

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.

# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

from sat.core.i18n import _
import urwid
from urwid_satext import sat_widgets
from sat_frontends.quick_frontend import quick_widgets


class Progress(urwid.WidgetWrap, quick_widgets.QuickWidget):
    PROFILES_ALLOW_NONE = True

    def __init__(self, host, target, profiles):
        assert target is None and profiles is None
        quick_widgets.QuickWidget.__init__(self, host, target)
        self.host = host
        self.progress_list = urwid.SimpleListWalker([])
        self.progress_dict = {}
        listbox = urwid.ListBox(self.progress_list)
        buttons = []
        buttons.append(sat_widgets.CustomButton(_("Clear progress list"), self._onClear))
        max_len = max([button.getSize() for button in buttons])
        buttons_wid = urwid.GridFlow(buttons, max_len, 1, 0, "center")
        main_wid = sat_widgets.FocusFrame(listbox, footer=buttons_wid)
        urwid.WidgetWrap.__init__(self, main_wid)

    def add(self, progress_id, message, profile):
        mess_wid = urwid.Text(message)
        progr_wid = urwid.ProgressBar("progress_normal", "progress_complete")
        column = urwid.Columns([mess_wid, progr_wid])
        self.progress_dict[(progress_id, profile)] = {
            "full": column,
            "progress": progr_wid,
            "state": "init",
        }
        self.progress_list.append(column)
        self.progressCB(self.host.loop, (progress_id, message, profile))

    def progressCB(self, loop, data):
        progress_id, message, profile = data
        data = self.host.bridge.progressGet(progress_id, profile)
        pbar = self.progress_dict[(progress_id, profile)]["progress"]
        if data:
            if self.progress_dict[(progress_id, profile)]["state"] == "init":
                # first answer, we must construct the bar
                self.progress_dict[(progress_id, profile)]["state"] = "progress"
                pbar.done = float(data["size"])

            pbar.set_completion(float(data["position"]))
            self.updateNotBar()
        else:
            if self.progress_dict[(progress_id, profile)]["state"] == "progress":
                self.progress_dict[(progress_id, profile)]["state"] = "done"
                pbar.set_completion(pbar.done)
                self.updateNotBar()
                return

        loop.set_alarm_in(0.2, self.progressCB, (progress_id, message, profile))

    def _removeBar(self, progress_id, profile):
        wid = self.progress_dict[(progress_id, profile)]["full"]
        self.progress_list.remove(wid)
        del (self.progress_dict[(progress_id, profile)])

    def _onClear(self, button):
        to_remove = []
        for progress_id, profile in self.progress_dict:
            if self.progress_dict[(progress_id, profile)]["state"] == "done":
                to_remove.append((progress_id, profile))
        for progress_id, profile in to_remove:
            self._removeBar(progress_id, profile)
        self.updateNotBar()

    def updateNotBar(self):
        if not self.progress_dict:
            self.host.setProgress(None)
            return
        progress = 0
        nb_bars = 0
        for progress_id, profile in self.progress_dict:
            pbar = self.progress_dict[(progress_id, profile)]["progress"]
            progress += pbar.current / pbar.done * 100
            nb_bars += 1
        av_progress = progress / float(nb_bars)
        self.host.setProgress(av_progress)