river: active window

bar/river/generated/river_control_unstable_v1/__init__.py

@@ -0,0 +1,18 @@
+# This file has been autogenerated by the pywayland scanner
+
+# Copyright 2020 The River Developers
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+from .zriver_command_callback_v1 import ZriverCommandCallbackV1  # noqa: F401
+from .zriver_control_v1 import ZriverControlV1  # noqa: F401

bar/river/generated/river_control_unstable_v1/zriver_command_callback_v1.py

@@ -0,0 +1,90 @@
+# This file has been autogenerated by the pywayland scanner
+
+# Copyright 2020 The River Developers
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+from __future__ import annotations
+
+from pywayland.protocol_core import (
+    Argument,
+    ArgumentType,
+    Global,
+    Interface,
+    Proxy,
+    Resource,
+)
+
+
+class ZriverCommandCallbackV1(Interface):
+    """Callback object
+
+    This object is created by the run_command request. Exactly one of the
+    success or failure events will be sent. This object will be destroyed by
+    the compositor after one of the events is sent.
+    """
+
+    name = "zriver_command_callback_v1"
+    version = 1
+
+
+class ZriverCommandCallbackV1Proxy(Proxy[ZriverCommandCallbackV1]):
+    interface = ZriverCommandCallbackV1
+
+
+class ZriverCommandCallbackV1Resource(Resource):
+    interface = ZriverCommandCallbackV1
+
+    @ZriverCommandCallbackV1.event(
+        Argument(ArgumentType.String),
+    )
+    def success(self, output: str) -> None:
+        """Command successful
+
+        Sent when the command has been successfully received and executed by
+        the compositor. Some commands may produce output, in which case the
+        output argument will be a non-empty string.
+
+        :param output:
+            the output of the command
+        :type output:
+            `ArgumentType.String`
+        """
+        self._post_event(0, output)
+
+    @ZriverCommandCallbackV1.event(
+        Argument(ArgumentType.String),
+    )
+    def failure(self, failure_message: str) -> None:
+        """Command failed
+
+        Sent when the command could not be carried out. This could be due to
+        sending a non-existent command, no command, not enough arguments, too
+        many arguments, invalid arguments, etc.
+
+        :param failure_message:
+            a message explaining why failure occurred
+        :type failure_message:
+            `ArgumentType.String`
+        """
+        self._post_event(1, failure_message)
+
+
+class ZriverCommandCallbackV1Global(Global):
+    interface = ZriverCommandCallbackV1
+
+
+ZriverCommandCallbackV1._gen_c()
+ZriverCommandCallbackV1.proxy_class = ZriverCommandCallbackV1Proxy
+ZriverCommandCallbackV1.resource_class = ZriverCommandCallbackV1Resource
+ZriverCommandCallbackV1.global_class = ZriverCommandCallbackV1Global

bar/river/generated/river_control_unstable_v1/zriver_control_v1.py

@@ -0,0 +1,111 @@
+# This file has been autogenerated by the pywayland scanner
+
+# Copyright 2020 The River Developers
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+from __future__ import annotations
+
+from pywayland.protocol_core import (
+    Argument,
+    ArgumentType,
+    Global,
+    Interface,
+    Proxy,
+    Resource,
+)
+
+from ..wayland import WlSeat
+from .zriver_command_callback_v1 import ZriverCommandCallbackV1
+
+
+class ZriverControlV1(Interface):
+    """Run compositor commands
+
+    This interface allows clients to run compositor commands and receive a
+    success/failure response with output or a failure message respectively.
+
+    Each command is built up in a series of add_argument requests and executed
+    with a run_command request. The first argument is the command to be run.
+
+    A complete list of commands should be made available in the man page of the
+    compositor.
+    """
+
+    name = "zriver_control_v1"
+    version = 1
+
+
+class ZriverControlV1Proxy(Proxy[ZriverControlV1]):
+    interface = ZriverControlV1
+
+    @ZriverControlV1.request()
+    def destroy(self) -> None:
+        """Destroy the river_control object
+
+        This request indicates that the client will not use the river_control
+        object any more. Objects that have been created through this instance
+        are not affected.
+        """
+        self._marshal(0)
+        self._destroy()
+
+    @ZriverControlV1.request(
+        Argument(ArgumentType.String),
+    )
+    def add_argument(self, argument: str) -> None:
+        """Add an argument to the current command
+
+        Arguments are stored by the server in the order they were sent until
+        the run_command request is made.
+
+        :param argument:
+            the argument to add
+        :type argument:
+            `ArgumentType.String`
+        """
+        self._marshal(1, argument)
+
+    @ZriverControlV1.request(
+        Argument(ArgumentType.Object, interface=WlSeat),
+        Argument(ArgumentType.NewId, interface=ZriverCommandCallbackV1),
+    )
+    def run_command(self, seat: WlSeat) -> Proxy[ZriverCommandCallbackV1]:
+        """Run the current command
+
+        Execute the command built up using the add_argument request for the
+        given seat.
+
+        :param seat:
+        :type seat:
+            :class:`~pywayland.protocol.wayland.WlSeat`
+        :returns:
+            :class:`~pywayland.protocol.river_control_unstable_v1.ZriverCommandCallbackV1`
+            -- callback object
+        """
+        callback = self._marshal_constructor(2, ZriverCommandCallbackV1, seat)
+        return callback
+
+
+class ZriverControlV1Resource(Resource):
+    interface = ZriverControlV1
+
+
+class ZriverControlV1Global(Global):
+    interface = ZriverControlV1
+
+
+ZriverControlV1._gen_c()
+ZriverControlV1.proxy_class = ZriverControlV1Proxy
+ZriverControlV1.resource_class = ZriverControlV1Resource
+ZriverControlV1.global_class = ZriverControlV1Global

bar/river/generated/river_status_unstable_v1/__init__.py

@@ -0,0 +1,19 @@
+# This file has been autogenerated by the pywayland scanner
+
+# Copyright 2020 The River Developers
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+from .zriver_output_status_v1 import ZriverOutputStatusV1  # noqa: F401
+from .zriver_seat_status_v1 import ZriverSeatStatusV1  # noqa: F401
+from .zriver_status_manager_v1 import ZriverStatusManagerV1  # noqa: F401

bar/river/generated/river_status_unstable_v1/zriver_output_status_v1.py

@@ -0,0 +1,140 @@
+# This file has been autogenerated by the pywayland scanner
+
+# Copyright 2020 The River Developers
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+from __future__ import annotations
+
+from pywayland.protocol_core import (
+    Argument,
+    ArgumentType,
+    Global,
+    Interface,
+    Proxy,
+    Resource,
+)
+
+
+class ZriverOutputStatusV1(Interface):
+    """Track output tags and focus
+
+    This interface allows clients to receive information about the current
+    windowing state of an output.
+    """
+
+    name = "zriver_output_status_v1"
+    version = 4
+
+
+class ZriverOutputStatusV1Proxy(Proxy[ZriverOutputStatusV1]):
+    interface = ZriverOutputStatusV1
+
+    @ZriverOutputStatusV1.request()
+    def destroy(self) -> None:
+        """Destroy the river_output_status object
+
+        This request indicates that the client will not use the
+        river_output_status object any more.
+        """
+        self._marshal(0)
+        self._destroy()
+
+
+class ZriverOutputStatusV1Resource(Resource):
+    interface = ZriverOutputStatusV1
+
+    @ZriverOutputStatusV1.event(
+        Argument(ArgumentType.Uint),
+    )
+    def focused_tags(self, tags: int) -> None:
+        """Focused tags of the output
+
+        Sent once binding the interface and again whenever the tag focus of the
+        output changes.
+
+        :param tags:
+            32-bit bitfield
+        :type tags:
+            `ArgumentType.Uint`
+        """
+        self._post_event(0, tags)
+
+    @ZriverOutputStatusV1.event(
+        Argument(ArgumentType.Array),
+    )
+    def view_tags(self, tags: list) -> None:
+        """Tag state of an output's views
+
+        Sent once on binding the interface and again whenever the tag state of
+        the output changes.
+
+        :param tags:
+            array of 32-bit bitfields
+        :type tags:
+            `ArgumentType.Array`
+        """
+        self._post_event(1, tags)
+
+    @ZriverOutputStatusV1.event(
+        Argument(ArgumentType.Uint),
+        version=2,
+    )
+    def urgent_tags(self, tags: int) -> None:
+        """Tags of the output with an urgent view
+
+        Sent once on binding the interface and again whenever the set of tags
+        with at least one urgent view changes.
+
+        :param tags:
+            32-bit bitfield
+        :type tags:
+            `ArgumentType.Uint`
+        """
+        self._post_event(2, tags)
+
+    @ZriverOutputStatusV1.event(
+        Argument(ArgumentType.String),
+        version=4,
+    )
+    def layout_name(self, name: str) -> None:
+        """Name of the layout
+
+        Sent once on binding the interface should a layout name exist and again
+        whenever the name changes.
+
+        :param name:
+            layout name
+        :type name:
+            `ArgumentType.String`
+        """
+        self._post_event(3, name)
+
+    @ZriverOutputStatusV1.event(version=4)
+    def layout_name_clear(self) -> None:
+        """Name of the layout
+
+        Sent when the current layout name has been removed without a new one
+        being set, for example when the active layout generator disconnects.
+        """
+        self._post_event(4)
+
+
+class ZriverOutputStatusV1Global(Global):
+    interface = ZriverOutputStatusV1
+
+
+ZriverOutputStatusV1._gen_c()
+ZriverOutputStatusV1.proxy_class = ZriverOutputStatusV1Proxy
+ZriverOutputStatusV1.resource_class = ZriverOutputStatusV1Resource
+ZriverOutputStatusV1.global_class = ZriverOutputStatusV1Global

bar/river/generated/river_status_unstable_v1/zriver_seat_status_v1.py

@@ -0,0 +1,131 @@
+# This file has been autogenerated by the pywayland scanner
+
+# Copyright 2020 The River Developers
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+from __future__ import annotations
+
+from pywayland.protocol_core import (
+    Argument,
+    ArgumentType,
+    Global,
+    Interface,
+    Proxy,
+    Resource,
+)
+
+from pywayland.protocol.wayland import WlOutput
+
+
+class ZriverSeatStatusV1(Interface):
+    """Track seat focus
+
+    This interface allows clients to receive information about the current
+    focus of a seat. Note that (un)focused_output events will only be sent if
+    the client has bound the relevant
+    :class:`~pywayland.protocol.wayland.WlOutput` globals.
+    """
+
+    name = "zriver_seat_status_v1"
+    version = 3
+
+
+class ZriverSeatStatusV1Proxy(Proxy[ZriverSeatStatusV1]):
+    interface = ZriverSeatStatusV1
+
+    @ZriverSeatStatusV1.request()
+    def destroy(self) -> None:
+        """Destroy the river_seat_status object
+
+        This request indicates that the client will not use the
+        river_seat_status object any more.
+        """
+        self._marshal(0)
+        self._destroy()
+
+
+class ZriverSeatStatusV1Resource(Resource):
+    interface = ZriverSeatStatusV1
+
+    @ZriverSeatStatusV1.event(
+        Argument(ArgumentType.Object, interface=WlOutput),
+    )
+    def focused_output(self, output: WlOutput) -> None:
+        """The seat focused an output
+
+        Sent on binding the interface and again whenever an output gains focus.
+
+        :param output:
+        :type output:
+            :class:`~pywayland.protocol.wayland.WlOutput`
+        """
+        self._post_event(0, output)
+
+    @ZriverSeatStatusV1.event(
+        Argument(ArgumentType.Object, interface=WlOutput),
+    )
+    def unfocused_output(self, output: WlOutput) -> None:
+        """The seat unfocused an output
+
+        Sent whenever an output loses focus.
+
+        :param output:
+        :type output:
+            :class:`~pywayland.protocol.wayland.WlOutput`
+        """
+        self._post_event(1, output)
+
+    @ZriverSeatStatusV1.event(
+        Argument(ArgumentType.String),
+    )
+    def focused_view(self, title: str) -> None:
+        """Information on the focused view
+
+        Sent once on binding the interface and again whenever the focused view
+        or a property thereof changes. The title may be an empty string if no
+        view is focused or the focused view did not set a title.
+
+        :param title:
+            title of the focused view
+        :type title:
+            `ArgumentType.String`
+        """
+        self._post_event(2, title)
+
+    @ZriverSeatStatusV1.event(
+        Argument(ArgumentType.String),
+        version=3,
+    )
+    def mode(self, name: str) -> None:
+        """The active mode changed
+
+        Sent once on binding the interface and again whenever a new mode is
+        entered (e.g. with riverctl enter-mode foobar).
+
+        :param name:
+            name of the mode
+        :type name:
+            `ArgumentType.String`
+        """
+        self._post_event(3, name)
+
+
+class ZriverSeatStatusV1Global(Global):
+    interface = ZriverSeatStatusV1
+
+
+ZriverSeatStatusV1._gen_c()
+ZriverSeatStatusV1.proxy_class = ZriverSeatStatusV1Proxy
+ZriverSeatStatusV1.resource_class = ZriverSeatStatusV1Resource
+ZriverSeatStatusV1.global_class = ZriverSeatStatusV1Global

bar/river/generated/river_status_unstable_v1/zriver_status_manager_v1.py

@@ -0,0 +1,109 @@
+# This file has been autogenerated by the pywayland scanner
+
+# Copyright 2020 The River Developers
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+from __future__ import annotations
+
+from pywayland.protocol_core import (
+    Argument,
+    ArgumentType,
+    Global,
+    Interface,
+    Proxy,
+    Resource,
+)
+
+from pywayland.protocol.wayland import WlOutput
+from pywayland.protocol.wayland import WlSeat
+from .zriver_output_status_v1 import ZriverOutputStatusV1
+from .zriver_seat_status_v1 import ZriverSeatStatusV1
+
+
+class ZriverStatusManagerV1(Interface):
+    """Manage river status objects
+
+    A global factory for objects that receive status information specific to
+    river. It could be used to implement, for example, a status bar.
+    """
+
+    name = "zriver_status_manager_v1"
+    version = 4
+
+
+class ZriverStatusManagerV1Proxy(Proxy[ZriverStatusManagerV1]):
+    interface = ZriverStatusManagerV1
+
+    @ZriverStatusManagerV1.request()
+    def destroy(self) -> None:
+        """Destroy the river_status_manager object
+
+        This request indicates that the client will not use the
+        river_status_manager object any more. Objects that have been created
+        through this instance are not affected.
+        """
+        self._marshal(0)
+        self._destroy()
+
+    @ZriverStatusManagerV1.request(
+        Argument(ArgumentType.NewId, interface=ZriverOutputStatusV1),
+        Argument(ArgumentType.Object, interface=WlOutput),
+    )
+    def get_river_output_status(self, output: WlOutput) -> Proxy[ZriverOutputStatusV1]:
+        """Create an output status object
+
+        This creates a new river_output_status object for the given
+        :class:`~pywayland.protocol.wayland.WlOutput`.
+
+        :param output:
+        :type output:
+            :class:`~pywayland.protocol.wayland.WlOutput`
+        :returns:
+            :class:`~pywayland.protocol.river_status_unstable_v1.ZriverOutputStatusV1`
+        """
+        id = self._marshal_constructor(1, ZriverOutputStatusV1, output)
+        return id
+
+    @ZriverStatusManagerV1.request(
+        Argument(ArgumentType.NewId, interface=ZriverSeatStatusV1),
+        Argument(ArgumentType.Object, interface=WlSeat),
+    )
+    def get_river_seat_status(self, seat: WlSeat) -> Proxy[ZriverSeatStatusV1]:
+        """Create a seat status object
+
+        This creates a new river_seat_status object for the given
+        :class:`~pywayland.protocol.wayland.WlSeat`.
+
+        :param seat:
+        :type seat:
+            :class:`~pywayland.protocol.wayland.WlSeat`
+        :returns:
+            :class:`~pywayland.protocol.river_status_unstable_v1.ZriverSeatStatusV1`
+        """
+        id = self._marshal_constructor(2, ZriverSeatStatusV1, seat)
+        return id
+
+
+class ZriverStatusManagerV1Resource(Resource):
+    interface = ZriverStatusManagerV1
+
+
+class ZriverStatusManagerV1Global(Global):
+    interface = ZriverStatusManagerV1
+
+
+ZriverStatusManagerV1._gen_c()
+ZriverStatusManagerV1.proxy_class = ZriverStatusManagerV1Proxy
+ZriverStatusManagerV1.resource_class = ZriverStatusManagerV1Resource
+ZriverStatusManagerV1.global_class = ZriverStatusManagerV1Global

bar/river/service.py

@@ -11,7 +11,7 @@ from fabric.utils.helpers import idle_add
 # Import pywayland components - ensure these imports are correct
 from pywayland.client import Display
 from pywayland.protocol.wayland import WlOutput, WlRegistry, WlSeat
-from ..generated.river_status_unstable_v1 import ZriverStatusManagerV1
+from .generated.river_status_unstable_v1 import ZriverStatusManagerV1
 
 
 @dataclass
@@ -41,6 +41,11 @@ class River(Service):
     def ready(self) -> bool:
         return self._ready
 
+    @Property(str, "readable", "active-window", default_value="")
+    def active_window(self) -> str:
+        """Get the title of the currently active window"""
+        return self._active_window_title
+
     @Signal
     def ready(self):
         return self.notify("ready")
@@ -52,6 +57,7 @@ class River(Service):
         """Initialize the River service"""
         super().__init__(**kwargs)
         self._ready = False
+        self._active_window_title = ""
         self.outputs: Dict[int, OutputInfo] = {}
         self.river_status_mgr = None
         self.seat = None
@@ -144,6 +150,23 @@ class River(Service):
                 logger.error("[RiverService] River status manager not found")
                 return
 
+                # Handle the window title updates through seat status
+
+            def focused_view_handler(_, title):
+                logger.debug(f"[RiverService] Focused view title: {title}")
+                self._active_window_title = title
+                idle_add(lambda: self._emit_active_window(title))
+
+                # Get the seat status to track active window
+
+            if state["seat"]:
+                seat_status = state["river_status_mgr"].get_river_seat_status(
+                    state["seat"]
+                )
+                seat_status.dispatcher["focused_view"] = focused_view_handler
+                state["seat_status"] = seat_status
+                logger.info("[RiverService] Set up seat status for window tracking")
+
             # Create view tags and focused tags handlers
             def make_view_tags_handler(output_id):
                 def handler(_, tags):
@@ -221,6 +244,13 @@ class River(Service):
         self.emit(f"event::focused_tags::{output_id}", tags)
         return False  # Don't repeat
 
+    def _emit_active_window(self, title):
+        """Emit active window title events (called on main thread)"""
+        event = RiverEvent("active_window", [title])
+        self.emit("event::active_window", event)
+        self.notify("active-window")
+        return False  # Don't repeat
+
     @staticmethod
     def _decode_bitfields(bitfields) -> List[int]:
         """Decode River's tag bitfields into a list of tag indices"""
@@ -255,4 +285,4 @@ class River(Service):
     def toggle_focused_tag(self, tag):
         """Toggle a tag in the focused tags"""
         tag_mask = 1 << int(tag)
-        self.run_command("toggle-focused-tags", str(tag_mask))
+        self.run_command("set-focused-tags", str(tag_mask))

bar/river/widgets.py

@@ -3,6 +3,7 @@ from fabric.core.service import Property
 from fabric.widgets.button import Button
 from fabric.widgets.box import Box
 from fabric.widgets.eventbox import EventBox
+from fabric.widgets.label import Label
 from fabric.utils.helpers import bulk_connect
 from .service import River
 
@@ -179,3 +180,52 @@ class RiverWorkspaces(EventBox):
         elif direction == Gdk.ScrollDirection.UP:
             logger.info("[RiverWorkspaces] Scroll up - focusing previous view")
             self.service.run_command("focus-view", "previous")
+
+
+class RiverActiveWindow(Label):
+    """Widget to display the currently active window's title"""
+
+    def __init__(self, max_length=None, ellipsize="end", **kwargs):
+        super().__init__(**kwargs)
+        self.service = get_river_connection()
+        self.max_length = max_length
+        self.ellipsize = ellipsize
+
+        # Set initial state
+        if self.service.ready:
+            self.on_ready(None)
+        else:
+            self.service.connect("event::ready", self.on_ready)
+
+        # Connect to active window changes
+        self.service.connect("event::active_window", self.on_active_window_changed)
+
+    def on_ready(self, _):
+        """Initialize widget when service is ready"""
+        logger.debug("[RiverActiveWindow] Service ready")
+        self.update_title(self.service.active_window)
+
+    def on_active_window_changed(self, _, event):
+        """Update widget when active window changes"""
+        title = event.data[0] if event.data else ""
+        logger.debug(f"[RiverActiveWindow] Window changed to: {title}")
+        self.update_title(title)
+
+    def update_title(self, title):
+        """Update the label with the window title"""
+        if not title:
+            self.label = ""
+            self.set_label(self.label)
+            return
+
+        if self.max_length and len(title) > self.max_length:
+            if self.ellipsize == "end":
+                title = title[: self.max_length] + "..."
+            elif self.ellipsize == "middle":
+                half = (self.max_length - 3) // 2
+                title = title[:half] + "..." + title[-half:]
+            elif self.ellipsize == "start":
+                title = "..." + title[-self.max_length :]
+
+        self.label = title
+        self.set_label(self.label)