From 5f020a184eb708a4e68602acc0102d0d8fb790bd Mon Sep 17 00:00:00 2001
From: Guido Cella <guido@guidocella.xyz>
Date: Mon, 1 Apr 2024 08:50:49 +0200
Subject: [PATCH] allow switching to the configured tag when a window opens

Add a rule option to switch to the configured tag when a window opens,
then switch back when it closes.
---
 config.def.h |  6 +++---
 dwl.c        | 11 +++++++++++
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/config.def.h b/config.def.h
index 8847e58..1e2ae93 100644
--- a/config.def.h
+++ b/config.def.h
@@ -21,10 +21,10 @@ static const float fullscreen_bg[]         = {0.1f, 0.1f, 0.1f, 1.0f}; /* You ca
 static int log_level = WLR_ERROR;
 
 static const Rule rules[] = {
-	/* app_id             title       tags mask     isfloating   monitor */
+	/* app_id             title       tags mask     switchtotag   isfloating   monitor */
 	/* examples: */
-	{ "Gimp_EXAMPLE",     NULL,       0,            1,           -1 }, /* Start on currently visible tags floating, not tiled */
-	{ "firefox_EXAMPLE",  NULL,       1 << 8,       0,           -1 }, /* Start on ONLY tag "9" */
+	{ "Gimp_EXAMPLE",     NULL,       0,            0,            1,           -1 }, /* Start on currently visible tags floating, not tiled */
+	{ "firefox_EXAMPLE",  NULL,       1 << 8,       1,            0,           -1 }, /* Start on ONLY tag "9" */
 };
 
 /* layout(s) */
diff --git a/dwl.c b/dwl.c
index 39ce68c..9a77a5f 100644
--- a/dwl.c
+++ b/dwl.c
@@ -138,6 +138,7 @@ typedef struct {
 	unsigned int bw;
 	uint32_t tags;
 	int isfloating, isurgent, isfullscreen;
+	int switchtotag;
 	uint32_t resize; /* configure serial of a pending resize */
 } Client;
 
@@ -226,6 +227,7 @@ typedef struct {
 	const char *id;
 	const char *title;
 	uint32_t tags;
+	bool switchtotag;
 	int isfloating;
 	int monitor;
 } Rule;
@@ -468,6 +470,11 @@ applyrules(Client *c)
 				if (r->monitor == i++)
 					mon = m;
 			}
+			if (r->switchtotag) {
+				c->switchtotag = selmon->tagset[selmon->seltags];
+				mon->seltags ^= 1;
+				mon->tagset[selmon->seltags] = r->tags & TAGMASK;
+			}
 		}
 	}
 	setmon(c, mon, newtags);
@@ -2694,6 +2701,10 @@ unmapnotify(struct wl_listener *listener, void *data)
 	wlr_scene_node_destroy(&c->scene->node);
 	printstatus();
 	motionnotify(0, NULL, 0, 0, 0, 0);
+	if (c->switchtotag) {
+		Arg a = { .ui = c->switchtotag };
+		view(&a);
+	}
 }
 
 void
-- 
2.44.0