410 lines
14 KiB
Python
410 lines
14 KiB
Python
#!/usr/bin/env python
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# Safe Eyes is a utility to remind you to take break frequently
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# to protect your eyes from eye strain.
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# Copyright (C) 2017 Gobinath
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""
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SafeEyes connects all the individual components and provide the complete application.
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"""
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import atexit
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import logging
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import os
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from threading import Timer
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import gi
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from safeeyes import utility
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from safeeyes.ui.about_dialog import AboutDialog
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from safeeyes.ui.break_screen import BreakScreen
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from safeeyes.ui.required_plugin_dialog import RequiredPluginDialog
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from safeeyes.model import State, RequiredPluginException
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from safeeyes.rpc import RPCServer
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from safeeyes.plugin_manager import PluginManager
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from safeeyes.core import SafeEyesCore
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from safeeyes.ui.settings_dialog import SettingsDialog
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gi.require_version('Gtk', '3.0')
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from gi.repository import Gtk, Gio
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SAFE_EYES_VERSION = "2.2.1"
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class SafeEyes(Gtk.Application):
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"""
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This class represents a runnable Safe Eyes instance.
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"""
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required_plugin_dialog_active = False
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def __init__(self, system_locale, config, cli_args):
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super().__init__(
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application_id="io.github.slgobinath.SafeEyes",
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flags=Gio.ApplicationFlags.IS_SERVICE
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)
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self.active = False
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self.break_screen = None
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self.safe_eyes_core = None
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self.config = config
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self.context = {}
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self.plugins_manager = None
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self.settings_dialog_active = False
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self.rpc_server = None
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self._status = ''
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self.cli_args = cli_args
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# Initialize the Safe Eyes Context
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self.context['version'] = SAFE_EYES_VERSION
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self.context['desktop'] = utility.desktop_environment()
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self.context['is_wayland'] = utility.is_wayland()
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self.context['locale'] = system_locale
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self.context['api'] = {}
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self.context['api']['show_settings'] = lambda: utility.execute_main_thread(
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self.show_settings)
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self.context['api']['show_about'] = lambda: utility.execute_main_thread(
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self.show_about)
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self.context['api']['enable_safeeyes'] = lambda next_break_time=-1, reset_breaks=False: \
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utility.execute_main_thread(self.enable_safeeyes, next_break_time, reset_breaks)
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self.context['api']['disable_safeeyes'] = lambda status=None, is_resting=False: utility.execute_main_thread(
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self.disable_safeeyes, status, is_resting)
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self.context['api']['status'] = self.status
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self.context['api']['quit'] = lambda: utility.execute_main_thread(
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self.quit)
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if self.config.get('persist_state'):
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self.context['session'] = utility.open_session()
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else:
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self.context['session'] = {'plugin': {}}
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self.break_screen = BreakScreen(
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self.context, self.on_skipped, self.on_postponed, utility.STYLE_SHEET_PATH)
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self.break_screen.initialize(self.config)
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self.plugins_manager = PluginManager()
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self.safe_eyes_core = SafeEyesCore(self.context)
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self.safe_eyes_core.on_pre_break += self.plugins_manager.pre_break
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self.safe_eyes_core.on_start_break += self.on_start_break
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self.safe_eyes_core.start_break += self.start_break
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self.safe_eyes_core.on_count_down += self.countdown
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self.safe_eyes_core.on_stop_break += self.stop_break
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self.safe_eyes_core.on_update_next_break += self.update_next_break
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self.safe_eyes_core.initialize(self.config)
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self.context['api']['take_break'] = self.take_break
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self.context['api']['has_breaks'] = self.safe_eyes_core.has_breaks
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self.context['api']['postpone'] = self.safe_eyes_core.postpone
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self.context['api']['get_break_time'] = self.safe_eyes_core.get_break_time
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try:
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self.plugins_manager.init(self.context, self.config)
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except RequiredPluginException as e:
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self.show_required_plugin_dialog(e.get_plugin_id(), e.get_plugin_name(), e.get_message())
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self.required_plugin_dialog_active = True
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self.hold()
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atexit.register(self.persist_session)
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def start(self):
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"""
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Start Safe Eyes
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"""
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if self.config.get('use_rpc_server', True):
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self.__start_rpc_server()
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if not self.required_plugin_dialog_active and self.safe_eyes_core.has_breaks():
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self.active = True
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self.context['state'] = State.START
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self.plugins_manager.start() # Call the start method of all plugins
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self.safe_eyes_core.start()
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self.handle_system_suspend()
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self.run()
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def do_startup(self):
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Gtk.Application.do_startup(self)
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if self.cli_args.about:
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self.show_about()
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elif self.cli_args.disable:
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self.disable_safeeyes()
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elif self.cli_args.enable:
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self.enable_safeeyes()
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elif self.cli_args.settings:
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self.show_settings()
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elif self.cli_args.take_break:
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self.take_break()
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def show_settings(self):
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"""
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Listen to tray icon Settings action and send the signal to Settings dialog.
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"""
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if not self.settings_dialog_active:
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logging.info("Show Settings dialog")
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self.settings_dialog_active = True
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settings_dialog = SettingsDialog(
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self.config.clone(), self.save_settings)
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settings_dialog.show()
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def show_required_plugin_dialog(self, plugin_id, plugin_name, message):
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logging.info("Show RequiredPlugin dialog")
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dialog = RequiredPluginDialog(
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plugin_id,
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plugin_name,
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message,
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self.quit,
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lambda: self.disable_plugin(plugin_id)
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)
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dialog.show()
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def disable_plugin(self, plugin_id):
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"""
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Temporarily disable plugin, and restart SafeEyes.
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"""
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config = self.config.clone()
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for plugin in config.get('plugins'):
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if plugin['id'] == plugin_id:
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plugin['enabled'] = False
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self.required_plugin_dialog_active = False
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self.restart(config, set_active=True)
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def show_about(self):
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"""
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Listen to tray icon About action and send the signal to About dialog.
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"""
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logging.info("Show About dialog")
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about_dialog = AboutDialog(SAFE_EYES_VERSION)
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about_dialog.show()
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def quit(self):
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"""
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Listen to the tray menu quit action and stop the core, notification and the app itself.
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"""
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logging.info("Quit Safe Eyes")
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self.context['state'] = State.QUIT
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self.plugins_manager.stop()
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self.safe_eyes_core.stop()
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self.plugins_manager.exit()
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self.__stop_rpc_server()
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self.persist_session()
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super().quit()
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def handle_suspend_callback(self, sleeping):
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"""
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If the system goes to sleep, Safe Eyes stop the core if it is already active.
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If it was active, Safe Eyes will become active after wake up.
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"""
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if sleeping:
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# Sleeping / suspending
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if self.active:
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logging.info("Stop Safe Eyes due to system suspend")
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self.plugins_manager.stop()
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self.safe_eyes_core.stop(True)
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else:
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# Resume from sleep
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if self.active and self.safe_eyes_core.has_breaks():
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logging.info("Resume Safe Eyes after system wakeup")
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self.plugins_manager.start()
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self.safe_eyes_core.start()
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def handle_suspend_signal(self, proxy, sender, signal, parameters):
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if signal != "PrepareForSleep":
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return
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(sleeping, ) = parameters
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self.handle_suspend_callback(sleeping)
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def handle_system_suspend(self):
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"""
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Setup system suspend listener.
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"""
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self.suspend_proxy = Gio.DBusProxy.new_for_bus_sync(
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bus_type=Gio.BusType.SYSTEM,
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flags=Gio.DBusProxyFlags.DO_NOT_LOAD_PROPERTIES,
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info=None,
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name='org.freedesktop.login1',
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object_path='/org/freedesktop/login1',
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interface_name='org.freedesktop.login1.Manager',
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cancellable=None,
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)
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self.suspend_proxy.connect('g-signal', self.handle_suspend_signal)
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def on_skipped(self):
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"""
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Listen to break screen Skip action and send the signal to core.
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"""
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logging.info("User skipped the break")
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self.safe_eyes_core.skip()
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self.plugins_manager.stop_break()
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def on_postponed(self):
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"""
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Listen to break screen Postpone action and send the signal to core.
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"""
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logging.info("User postponed the break")
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self.safe_eyes_core.postpone()
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self.plugins_manager.stop_break()
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def save_settings(self, config):
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"""
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Listen to Settings dialog Save action and write to the config file.
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"""
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self.settings_dialog_active = False
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if self.config == config:
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# Config is not modified
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return
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logging.info("Saving settings to safeeyes.json")
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# Stop the Safe Eyes core
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if self.active:
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self.plugins_manager.stop()
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self.safe_eyes_core.stop()
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# Write the configuration to file
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config.save()
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self.persist_session()
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self.restart(config)
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def restart(self, config, set_active=False):
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logging.info("Initialize SafeEyesCore with modified settings")
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if self.rpc_server is None and config.get('use_rpc_server'):
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# RPC server wasn't running but now enabled
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self.__start_rpc_server()
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elif self.rpc_server is not None and not config.get('use_rpc_server'):
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# RPC server was running but now disabled
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self.__stop_rpc_server()
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# Restart the core and initialize the components
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self.config = config
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self.safe_eyes_core.initialize(config)
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self.break_screen.initialize(config)
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try:
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self.plugins_manager.init(self.context, self.config)
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except RequiredPluginException as e:
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self.show_required_plugin_dialog(e.get_plugin_id(), e.get_plugin_name(), e.get_message())
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self.required_plugin_dialog_active = True
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return
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if set_active:
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self.active = True
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if self.active and self.safe_eyes_core.has_breaks():
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# 1 sec delay is required to give enough time for core to be stopped
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Timer(1.0, self.safe_eyes_core.start).start()
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self.plugins_manager.start()
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def enable_safeeyes(self, scheduled_next_break_time=-1, reset_breaks=False):
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"""
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Listen to tray icon enable action and send the signal to core.
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"""
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if not self.required_plugin_dialog_active and not self.active and self.safe_eyes_core.has_breaks():
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self.active = True
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self.safe_eyes_core.start(scheduled_next_break_time, reset_breaks)
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self.plugins_manager.start()
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def disable_safeeyes(self, status=None, is_resting = False):
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"""
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Listen to tray icon disable action and send the signal to core.
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"""
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if self.active:
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self.active = False
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self.plugins_manager.stop()
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self.safe_eyes_core.stop(is_resting)
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if status is None:
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status = _('Disabled until restart')
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self._status = status
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def on_start_break(self, break_obj):
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"""
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Pass the break information to plugins.
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"""
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if not self.plugins_manager.start_break(break_obj):
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return False
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return True
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def start_break(self, break_obj):
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"""
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Pass the break information to break screen.
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"""
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# Get the HTML widgets content from plugins
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widget = self.plugins_manager.get_break_screen_widgets(break_obj)
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actions = self.plugins_manager.get_break_screen_tray_actions(break_obj)
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self.break_screen.show_message(break_obj, widget, actions)
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def countdown(self, countdown, seconds):
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"""
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Pass the countdown to plugins and break screen.
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"""
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self.break_screen.show_count_down(countdown, seconds)
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self.plugins_manager.countdown(countdown, seconds)
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return True
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def update_next_break(self, break_obj, break_time):
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"""
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Update the next break to plugins and save the session.
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"""
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self.plugins_manager.update_next_break(break_obj, break_time)
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self._status = _('Next break at %s') % (
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utility.format_time(break_time))
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if self.config.get('persist_state'):
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utility.write_json(utility.SESSION_FILE_PATH,
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self.context['session'])
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def stop_break(self):
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"""
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Stop the current break.
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"""
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self.break_screen.close()
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self.plugins_manager.stop_break()
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return True
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def take_break(self, break_type = None):
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"""
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Take a break now.
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"""
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utility.execute_main_thread(self.safe_eyes_core.take_break, break_type)
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def status(self):
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"""
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Return the status of Safe Eyes.
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"""
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return self._status
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def persist_session(self):
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"""
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Save the session object to the session file.
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"""
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if self.config.get('persist_state'):
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utility.write_json(utility.SESSION_FILE_PATH,
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self.context['session'])
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else:
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utility.delete(utility.SESSION_FILE_PATH)
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def __start_rpc_server(self):
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if self.rpc_server is None:
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self.rpc_server = RPCServer(self.config.get('rpc_port'), self.context)
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self.rpc_server.start()
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def __stop_rpc_server(self):
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if self.rpc_server is not None:
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self.rpc_server.stop()
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self.rpc_server = None
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