Python script, ASCII text executable
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"""
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Implements the org.freedesktop.StatusNotifierWatcher and nothing else.
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Copyright 2025, roundabout-host.com <vlad@roundabout-host.com>
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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 Licence as published by
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the Free Software Foundation, either version 3 of the Licence, 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 Licence for more details.
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You should have received a copy of the GNU General Public Licence
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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"""
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import gi
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gi.require_version("Gtk", "4.0")
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from gi.repository import GLib, Gio, GObject, Gtk
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from pydbus import SessionBus
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import pydbus.generic
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class StatusNotifierWatcher:
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StatusNotifierItemRegistered = pydbus.generic.signal()
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StatusNotifierHostRegistered = pydbus.generic.signal()
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StatusNotifierItemUnregistered = pydbus.generic.signal()
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def __init__(self, bus):
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super().__init__()
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self.hosts = set()
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self.items = set()
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self.bus = bus
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dbus_proxy = self.bus.get("org.freedesktop.DBus", "/org/freedesktop/DBus")
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dbus_proxy.NameOwnerChanged.connect(self._on_name_owner_changed)
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def _on_name_owner_changed(self, name, old_owner, new_owner):
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if new_owner == "":
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removed = False
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for lookup in (name, old_owner):
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if lookup in self.items:
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self.items.discard(lookup)
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self.StatusNotifierItemUnregistered(lookup)
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if lookup in self.hosts:
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self.hosts.discard(lookup)
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def RegisterStatusNotifierItem(self, service_name):
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self.items.add(service_name)
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self.StatusNotifierItemRegistered(service_name)
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def RegisterStatusNotifierHost(self, service_name):
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self.hosts.add(service_name)
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self.StatusNotifierHostRegistered(service_name)
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@property
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def RegisteredStatusNotifierItems(self):
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return sorted(self.items)
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@property
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def IsStatusNotifierHostRegistered(self):
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return bool(self.hosts)
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@property
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def ProtocolVersion(self):
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return 0
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class KDEStatusNotifierWatcher(StatusNotifierWatcher):
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"""
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<node>
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<interface name="org.kde.StatusNotifierWatcher">
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<method name="RegisterStatusNotifierItem">
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<arg type="s" name="service_name" direction="in"/>
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</method>
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<method name="RegisterStatusNotifierHost">
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<arg type="s" name="service_name" direction="in"/>
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</method>
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<property name="RegisteredStatusNotifierItems" type="as" access="read"/>
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<property name="IsStatusNotifierHostRegistered" type="b" access="read"/>
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<property name="ProtocolVersion" type="i" access="read"/>
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<signal name="StatusNotifierItemRegistered">
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<arg type="s" name="service" direction="out"/>
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</signal>
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<signal name="StatusNotifierItemUnregistered">
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<arg type="s" name="service" direction="out"/>
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</signal>
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<signal name="StatusNotifierHostRegistered">
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<arg type="s" name="service" direction="out"/>
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</signal>
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</interface>
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</node>
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"""
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class FDStatusNotifierWatcher(StatusNotifierWatcher):
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"""
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<node>
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<interface name="org.freedesktop.StatusNotifierWatcher">
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<method name="RegisterStatusNotifierItem">
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<arg type="s" name="service_name" direction="in"/>
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</method>
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<method name="RegisterStatusNotifierHost">
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<arg type="s" name="service_name" direction="in"/>
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</method>
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<property name="RegisteredStatusNotifierItems" type="as" access="read"/>
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<property name="IsStatusNotifierHostRegistered" type="b" access="read"/>
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<property name="ProtocolVersion" type="i" access="read"/>
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<signal name="StatusNotifierItemRegistered">
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<arg type="s" name="service" direction="out"/>
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</signal>
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<signal name="StatusNotifierItemUnregistered">
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<arg type="s" name="service" direction="out"/>
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</signal>
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<signal name="StatusNotifierHostRegistered">
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<arg type="s" name="service" direction="out"/>
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</signal>
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</interface>
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</node>
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"""
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class WatcherApplication(Gtk.Application):
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def __init__(self):
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super().__init__(application_id="com.roundabout_host.roundabout.PanoramaIndicatorService",
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flags=Gio.ApplicationFlags.FLAGS_NONE)
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self.bus = None
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self.kde_publishing = None
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self.fd_publishing = None
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self.kde_watcher = None
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self.fd_watcher = None
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def do_startup(self):
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Gtk.Application.do_startup(self)
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self.bus = SessionBus()
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self.kde_watcher = KDEStatusNotifierWatcher(self.bus)
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self.fd_watcher = FDStatusNotifierWatcher(self.bus)
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self.kde_publishing = self.bus.publish(
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f"org.kde.StatusNotifierWatcher",
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("/StatusNotifierWatcher", self.kde_watcher)
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)
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self.fd_publishing = self.bus.publish(
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f"org.freedesktop.StatusNotifierWatcher",
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("/StatusNotifierWatcher", self.fd_watcher)
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)
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def do_activate(self):
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print("StatusNotifierWatcher running...")
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self.hold()
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def do_shutdown(self):
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if self.bus:
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if self.kde_publishing:
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self.bus.unpublish(self.kde_publishing)
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if self.fd_publishing:
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self.bus.unpublish(self.fd_publishing)
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print("Unregistered")
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Gtk.Application.do_shutdown(self)
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if __name__ == "__main__":
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app = WatcherApplication()
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app.run(None)
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