From 3727f4a7b3d230226f0082581444344d563e0f9c Mon Sep 17 00:00:00 2001
From: "Devin J. Pohly" <djpohly@gmail.com>
Date: Thu, 15 Apr 2021 13:05:05 -0500
Subject: [PATCH] update status info if focused client changes title

Fixes #108.
---
 dwl.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/dwl.c b/dwl.c
index d463985..c5308f5 100644
--- a/dwl.c
+++ b/dwl.c
@@ -96,6 +96,7 @@ typedef struct {
 	struct wl_listener map;
 	struct wl_listener unmap;
 	struct wl_listener destroy;
+	struct wl_listener set_title;
 	struct wl_listener fullscreen;
 	struct wlr_box geom;  /* layout-relative, includes border */
 	Monitor *mon;
@@ -288,6 +289,7 @@ static void unmaplayersurface(LayerSurface *layersurface);
 static void unmaplayersurfacenotify(struct wl_listener *listener, void *data);
 static void unmapnotify(struct wl_listener *listener, void *data);
 static void updatemons(struct wl_listener *listener, void *data);
+static void updatetitle(struct wl_listener *listener, void *data);
 static void view(const Arg *arg);
 static void virtualkeyboard(struct wl_listener *listener, void *data);
 static Client *xytoclient(double x, double y);
@@ -891,6 +893,7 @@ createnotify(struct wl_listener *listener, void *data)
 	LISTEN(&xdg_surface->events.map, &c->map, mapnotify);
 	LISTEN(&xdg_surface->events.unmap, &c->unmap, unmapnotify);
 	LISTEN(&xdg_surface->events.destroy, &c->destroy, destroynotify);
+	LISTEN(&xdg_surface->toplevel->events.set_title, &c->set_title, updatetitle);
 	LISTEN(&xdg_surface->toplevel->events.request_fullscreen, &c->fullscreen,
 			fullscreennotify);
 	c->isfullscreen = 0;
@@ -994,6 +997,7 @@ destroynotify(struct wl_listener *listener, void *data)
 	wl_list_remove(&c->map.link);
 	wl_list_remove(&c->unmap.link);
 	wl_list_remove(&c->destroy.link);
+	wl_list_remove(&c->set_title.link);
 	wl_list_remove(&c->fullscreen.link);
 #ifdef XWAYLAND
 	if (c->type == X11Managed)
@@ -2291,6 +2295,14 @@ updatemons(struct wl_listener *listener, void *data)
 	wlr_output_manager_v1_set_configuration(output_mgr, config);
 }
 
+void
+updatetitle(struct wl_listener *listener, void *data)
+{
+	Client *c = wl_container_of(listener, c, set_title);
+	if (c == focustop(c->mon))
+		printstatus();
+}
+
 void
 view(const Arg *arg)
 {
@@ -2427,6 +2439,7 @@ createnotifyx11(struct wl_listener *listener, void *data)
 			activatex11);
 	LISTEN(&xwayland_surface->events.request_configure, &c->configure,
 			configurex11);
+	LISTEN(&xwayland_surface->events.set_title, &c->set_title, updatetitle);
 	LISTEN(&xwayland_surface->events.destroy, &c->destroy, destroynotify);
 	LISTEN(&xwayland_surface->events.request_fullscreen, &c->fullscreen,
 			fullscreennotify);