From f57149deddedf63203d2a470d7ab4519aae91e77 Mon Sep 17 00:00:00 2001
From: Marko <marko@pepega.club>
Date: Fri, 9 Jun 2023 20:15:00 +0200
Subject: [PATCH 1/7] Implement `workspace <name> persistent yes|no`

---
 include/sway/tree/workspace.h |  1 +
 sway/commands/workspace.c     | 27 +++++++++++++++++++++++++++
 sway/tree/workspace.c         |  5 +++++
 3 files changed, 33 insertions(+)

diff --git a/include/sway/tree/workspace.h b/include/sway/tree/workspace.h
index b0fef4ca7..55412c37c 100644
--- a/include/sway/tree/workspace.h
+++ b/include/sway/tree/workspace.h
@@ -42,6 +42,7 @@ struct sway_workspace {
 	list_t *tiling;             // struct sway_container
 	list_t *output_priority;
 	bool urgent;
+	bool persistent;
 
 	struct sway_workspace_state current;
 };
diff --git a/sway/commands/workspace.c b/sway/commands/workspace.c
index 03e488ba9..01da27fcc 100644
--- a/sway/commands/workspace.c
+++ b/sway/commands/workspace.c
@@ -10,6 +10,7 @@
 #include "list.h"
 #include "log.h"
 #include "stringop.h"
+#include "util.h"
 
 static struct workspace_config *workspace_config_find_or_create(char *ws_name) {
 	struct workspace_config *wsc = workspace_find_config(ws_name);
@@ -130,6 +131,7 @@ struct cmd_results *cmd_workspace(int argc, char **argv) {
 
 	int output_location = -1;
 	int gaps_location = -1;
+	int persistent_location = -1;
 
 	for (int i = 0; i < argc; ++i) {
 		if (strcasecmp(argv[i], "output") == 0) {
@@ -143,6 +145,13 @@ struct cmd_results *cmd_workspace(int argc, char **argv) {
 			break;
 		}
 	}
+	for (int i = 0; i < argc; ++i) {
+		if (strcasecmp(argv[i], "persistent") == 0) {
+			persistent_location = i;
+			break;
+		}
+	}
+
 	if (output_location == 0) {
 		return cmd_results_new(CMD_INVALID,
 			"Expected 'workspace <name> output <output>'");
@@ -165,6 +174,24 @@ struct cmd_results *cmd_workspace(int argc, char **argv) {
 		if ((error = cmd_workspace_gaps(argc, argv, gaps_location))) {
 			return error;
 		}
+	} else if (persistent_location == 0) {
+		return cmd_results_new(CMD_INVALID,
+			"Expected 'workspace <name> persistent yes|no'");
+	} else if (persistent_location > 0) {
+		if ((error = checkarg(argc, "workspace", EXPECTED_AT_LEAST,
+						persistent_location + 2))) {
+			return error;
+		}
+
+		struct sway_workspace *ws = NULL;
+
+		char *ws_name = join_args(argv, persistent_location);
+		if (!(ws = workspace_by_name(ws_name))) {
+			ws = workspace_create(NULL, ws_name);
+		}
+		free(ws_name);
+		ws->persistent = parse_boolean(argv[persistent_location + 1], ws->persistent);
+		workspace_consider_destroy(ws);
 	} else {
 		if (config->reading || !config->active) {
 			return cmd_results_new(CMD_DEFER, NULL);
diff --git a/sway/tree/workspace.c b/sway/tree/workspace.c
index 18218768b..b32f15aab 100644
--- a/sway/tree/workspace.c
+++ b/sway/tree/workspace.c
@@ -77,6 +77,7 @@ struct sway_workspace *workspace_create(struct sway_output *output,
 	ws->floating = create_list();
 	ws->tiling = create_list();
 	ws->output_priority = create_list();
+	ws->persistent = false;
 
 	ws->gaps_outer = config->gaps_outer;
 	ws->gaps_inner = config->gaps_inner;
@@ -154,6 +155,10 @@ void workspace_begin_destroy(struct sway_workspace *workspace) {
 }
 
 void workspace_consider_destroy(struct sway_workspace *ws) {
+	if (ws->persistent) {
+		return;
+	}
+
 	if (ws->tiling->length || ws->floating->length) {
 		return;
 	}

From d3ac8566882a77ccc407e120df841cc22d9589bc Mon Sep 17 00:00:00 2001
From: Marko <marko@pepega.club>
Date: Fri, 9 Jun 2023 20:15:58 +0200
Subject: [PATCH 2/7] Implement `empty` flag for workspaces in ipc

---
 sway/ipc-json.c | 2 ++
 swaybar/ipc.c   | 4 +++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/sway/ipc-json.c b/sway/ipc-json.c
index c7cbea013..f770e9844 100644
--- a/sway/ipc-json.c
+++ b/sway/ipc-json.c
@@ -506,6 +506,8 @@ static void ipc_json_describe_workspace(struct sway_workspace *workspace,
 			json_object_new_string(workspace->output->wlr_output->name) : NULL);
 	json_object_object_add(object, "urgent",
 			json_object_new_boolean(workspace->urgent));
+	json_object_object_add(object, "empty",
+			json_object_new_boolean(workspace_is_empty(workspace)));
 	json_object_object_add(object, "representation", workspace->representation ?
 			json_object_new_string(workspace->representation) : NULL);
 
diff --git a/swaybar/ipc.c b/swaybar/ipc.c
index 33ae65448..18dfd7ad1 100644
--- a/swaybar/ipc.c
+++ b/swaybar/ipc.c
@@ -355,7 +355,7 @@ bool ipc_get_workspaces(struct swaybar *bar) {
 	bar->visible_by_urgency = false;
 	size_t length = json_object_array_length(results);
 	json_object *ws_json;
-	json_object *num, *name, *visible, *focused, *out, *urgent;
+	json_object *num, *name, *visible, *focused, *out, *urgent, *empty;
 	for (size_t i = 0; i < length; ++i) {
 		ws_json = json_object_array_get_idx(results, i);
 
@@ -365,6 +365,7 @@ bool ipc_get_workspaces(struct swaybar *bar) {
 		json_object_object_get_ex(ws_json, "focused", &focused);
 		json_object_object_get_ex(ws_json, "output", &out);
 		json_object_object_get_ex(ws_json, "urgent", &urgent);
+		json_object_object_get_ex(ws_json, "empty", &empty);
 
 		wl_list_for_each(output, &bar->outputs, link) {
 			const char *ws_output = json_object_get_string(out);
@@ -399,6 +400,7 @@ bool ipc_get_workspaces(struct swaybar *bar) {
 				if (ws->urgent) {
 					bar->visible_by_urgency = true;
 				}
+				ws->empty = json_object_get_boolean(empty);
 				wl_list_insert(output->workspaces.prev, &ws->link);
 			}
 		}

From 173c918e43609ac332028a8f3f4f308af167c861 Mon Sep 17 00:00:00 2001
From: Marko <marko@pepega.club>
Date: Fri, 9 Jun 2023 20:16:39 +0200
Subject: [PATCH 3/7] Implement `empty` workspaces in swaybar

---
 include/sway/commands.h    |  1 +
 include/sway/config.h      |  3 +++
 include/swaybar/bar.h      |  1 +
 include/swaybar/config.h   |  1 +
 sway/commands/bar/colors.c | 10 ++++++++++
 sway/config/bar.c          | 12 ++++++++++++
 sway/ipc-json.c            |  7 +++++++
 swaybar/config.c           |  4 ++++
 swaybar/ipc.c              |  3 +++
 swaybar/render.c           |  2 ++
 10 files changed, 44 insertions(+)

diff --git a/include/sway/commands.h b/include/sway/commands.h
index 3212c2cf4..ceea16389 100644
--- a/include/sway/commands.h
+++ b/include/sway/commands.h
@@ -244,6 +244,7 @@ sway_cmd bar_colors_cmd_focused_separator;
 sway_cmd bar_colors_cmd_statusline;
 sway_cmd bar_colors_cmd_focused_statusline;
 sway_cmd bar_colors_cmd_urgent_workspace;
+sway_cmd bar_colors_cmd_empty_workspace;
 
 sway_cmd input_cmd_seat;
 sway_cmd input_cmd_accel_profile;
diff --git a/include/sway/config.h b/include/sway/config.h
index aa58da531..8a104b16b 100644
--- a/include/sway/config.h
+++ b/include/sway/config.h
@@ -387,6 +387,9 @@ struct bar_config {
 		char *urgent_workspace_border;
 		char *urgent_workspace_bg;
 		char *urgent_workspace_text;
+		char *empty_workspace_border;
+		char *empty_workspace_bg;
+		char *empty_workspace_text;
 		char *binding_mode_border;
 		char *binding_mode_bg;
 		char *binding_mode_text;
diff --git a/include/swaybar/bar.h b/include/swaybar/bar.h
index 3ad0bdf3c..95b60a8f0 100644
--- a/include/swaybar/bar.h
+++ b/include/swaybar/bar.h
@@ -86,6 +86,7 @@ struct swaybar_workspace {
 	bool focused;
 	bool visible;
 	bool urgent;
+	bool empty;
 };
 
 bool bar_setup(struct swaybar *bar, const char *socket_path);
diff --git a/include/swaybar/config.h b/include/swaybar/config.h
index 361acd991..b2d74fa3d 100644
--- a/include/swaybar/config.h
+++ b/include/swaybar/config.h
@@ -65,6 +65,7 @@ struct swaybar_config {
 		struct box_colors active_workspace;
 		struct box_colors inactive_workspace;
 		struct box_colors urgent_workspace;
+		struct box_colors empty_workspace;
 		struct box_colors binding_mode;
 	} colors;
 
diff --git a/sway/commands/bar/colors.c b/sway/commands/bar/colors.c
index 275fa3c64..01427f72d 100644
--- a/sway/commands/bar/colors.c
+++ b/sway/commands/bar/colors.c
@@ -8,6 +8,7 @@ static const struct cmd_handler bar_colors_handlers[] = {
 	{ "active_workspace", bar_colors_cmd_active_workspace },
 	{ "background", bar_colors_cmd_background },
 	{ "binding_mode", bar_colors_cmd_binding_mode },
+	{ "empty_workspace", bar_colors_cmd_empty_workspace },
 	{ "focused_background", bar_colors_cmd_focused_background },
 	{ "focused_separator", bar_colors_cmd_focused_separator },
 	{ "focused_statusline", bar_colors_cmd_focused_statusline },
@@ -150,3 +151,12 @@ struct cmd_results *bar_colors_cmd_urgent_workspace(int argc, char **argv) {
 	};
 	return parse_three_colors(colors, "urgent_workspace", argc, argv);
 }
+
+struct cmd_results *bar_colors_cmd_empty_workspace(int argc, char **argv) {
+	char **colors[3] = {
+		&(config->current_bar->colors.empty_workspace_border),
+		&(config->current_bar->colors.empty_workspace_bg),
+		&(config->current_bar->colors.empty_workspace_text)
+	};
+	return parse_three_colors(colors, "empty_workspace", argc, argv);
+}
diff --git a/sway/config/bar.c b/sway/config/bar.c
index a8389244f..04e2190df 100644
--- a/sway/config/bar.c
+++ b/sway/config/bar.c
@@ -67,6 +67,9 @@ void free_bar_config(struct bar_config *bar) {
 	free(bar->colors.urgent_workspace_border);
 	free(bar->colors.urgent_workspace_bg);
 	free(bar->colors.urgent_workspace_text);
+	free(bar->colors.empty_workspace_border);
+	free(bar->colors.empty_workspace_bg);
+	free(bar->colors.empty_workspace_text);
 	free(bar->colors.binding_mode_border);
 	free(bar->colors.binding_mode_bg);
 	free(bar->colors.binding_mode_text);
@@ -161,6 +164,15 @@ struct bar_config *default_bar_config(void) {
 	if (!(bar->colors.urgent_workspace_text = strndup("#ffffffff", 9))) {
 		goto cleanup;
 	}
+	if (!(bar->colors.empty_workspace_border = strndup("#000000ff", 9))) {
+		goto cleanup;
+	}
+	if (!(bar->colors.empty_workspace_bg = strndup("#000000ff", 9))) {
+		goto cleanup;
+	}
+	if (!(bar->colors.empty_workspace_text = strndup("#666666FF", 9))) {
+		goto cleanup;
+	}
 	// if the following colors stay undefined, they fall back to background,
 	// statusline, separator and urgent_workspace_*.
 	bar->colors.focused_background = NULL;
diff --git a/sway/ipc-json.c b/sway/ipc-json.c
index f770e9844..fb3d40854 100644
--- a/sway/ipc-json.c
+++ b/sway/ipc-json.c
@@ -1307,6 +1307,13 @@ json_object *ipc_json_describe_bar_config(struct bar_config *bar) {
 	json_object_object_add(colors, "urgent_workspace_text",
 			json_object_new_string(bar->colors.urgent_workspace_text));
 
+	json_object_object_add(colors, "empty_workspace_border",
+			json_object_new_string(bar->colors.empty_workspace_border));
+	json_object_object_add(colors, "empty_workspace_bg",
+			json_object_new_string(bar->colors.empty_workspace_bg));
+	json_object_object_add(colors, "empty_workspace_text",
+			json_object_new_string(bar->colors.empty_workspace_text));
+
 	if (bar->colors.binding_mode_border) {
 		json_object_object_add(colors, "binding_mode_border",
 				json_object_new_string(bar->colors.binding_mode_border));
diff --git a/swaybar/config.c b/swaybar/config.c
index 5e8287734..572501e87 100644
--- a/swaybar/config.c
+++ b/swaybar/config.c
@@ -73,6 +73,10 @@ struct swaybar_config *init_config(void) {
 	config->colors.urgent_workspace.background = 0x900000FF;
 	config->colors.urgent_workspace.text = 0xFFFFFFFF;
 
+	config->colors.empty_workspace.border = 0x000000FF;
+	config->colors.empty_workspace.background = 0x000000FF;
+	config->colors.empty_workspace.text = 0x666666FF;
+
 	config->colors.binding_mode.border = 0x2F343AFF;
 	config->colors.binding_mode.background = 0x900000FF;
 	config->colors.binding_mode.text = 0xFFFFFFFF;
diff --git a/swaybar/ipc.c b/swaybar/ipc.c
index 18dfd7ad1..10a136d04 100644
--- a/swaybar/ipc.c
+++ b/swaybar/ipc.c
@@ -77,6 +77,9 @@ static void ipc_parse_colors(
 		{ "urgent_workspace_border", &config->colors.urgent_workspace.border },
 		{ "urgent_workspace_bg", &config->colors.urgent_workspace.background },
 		{ "urgent_workspace_text", &config->colors.urgent_workspace.text },
+		{ "empty_workspace_border", &config->colors.empty_workspace.border },
+		{ "empty_workspace_bg", &config->colors.empty_workspace.background },
+		{ "empty_workspace_text", &config->colors.empty_workspace.text },
 		{ "binding_mode_border", &config->colors.binding_mode.border },
 		{ "binding_mode_bg", &config->colors.binding_mode.background },
 		{ "binding_mode_text", &config->colors.binding_mode.text },
diff --git a/swaybar/render.c b/swaybar/render.c
index 1113ca44a..b814621f0 100644
--- a/swaybar/render.c
+++ b/swaybar/render.c
@@ -623,6 +623,8 @@ static uint32_t render_workspace_button(struct render_context *ctx,
 		box_colors = config->colors.focused_workspace;
 	} else if (ws->visible) {
 		box_colors = config->colors.active_workspace;
+	} else if (ws->empty) {
+		box_colors = config->colors.empty_workspace;
 	} else {
 		box_colors = config->colors.inactive_workspace;
 	}

From f1f503b2798be3675bf8611b518021dbeb6da926 Mon Sep 17 00:00:00 2001
From: Marko <marko@pepega.club>
Date: Fri, 9 Jun 2023 20:56:08 +0200
Subject: [PATCH 4/7] Add docs for `workspace <name> persistent yes|no`

---
 sway/sway.5.scd | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/sway/sway.5.scd b/sway/sway.5.scd
index 78d7d2316..baf568c8a 100644
--- a/sway/sway.5.scd
+++ b/sway/sway.5.scd
@@ -920,6 +920,13 @@ The default colors are:
 	criteria (non-empty workspaces only) or _workspace_ command (to switch
 	to the workspace before moving).
 
+*workspace* <name> persistent yes|no
+	Specifies that workspace _name_ should not be destroyed when it is empty and
+	inactive.
+
+	This command will apply to an existing workspace or create it if it doesn't
+	exist.
+
 *workspace_auto_back_and_forth* yes|no
 	When _yes_, repeating a workspace switch command will switch back to the
 	prior workspace. For example, if you are currently on workspace 1,

From 71f9f2d9d82b7290dcb4e4f6364a5abcf402b8d8 Mon Sep 17 00:00:00 2001
From: Marko <marko@pepega.club>
Date: Fri, 9 Jun 2023 20:56:37 +0200
Subject: [PATCH 5/7] Add docs for `empty` flag for workspaces in ipc

---
 sway/sway-ipc.7.scd | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sway/sway-ipc.7.scd b/sway/sway-ipc.7.scd
index 42aaaab67..e49c97a04 100644
--- a/sway/sway-ipc.7.scd
+++ b/sway/sway-ipc.7.scd
@@ -139,6 +139,9 @@ has the following properties:
 |- urgent
 :  boolean
 :  Whether a view on the workspace has the urgent flag set
+|- empty
+:  boolean
+:  Whether the workspace is empty
 |- rect
 :  object
 :  The bounds of the workspace. It consists of _x_, _y_, _width_, and _height_
@@ -1562,6 +1565,7 @@ The following change types are currently available:
 		"num": 2,
 		"output": "eDP-1",
 		"type": "workspace",
+		"empty": true,
 		"representation": null,
 		"nodes": [
 		]

From 409bc681ff41f25327045b380221a78cbb942ff5 Mon Sep 17 00:00:00 2001
From: Marko <marko@pepega.club>
Date: Fri, 9 Jun 2023 20:56:54 +0200
Subject: [PATCH 6/7] Add docs for `empty` workspaces in swaybar

---
 sway/sway-bar.5.scd |  4 ++++
 sway/sway-ipc.7.scd | 12 ++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/sway/sway-bar.5.scd b/sway/sway-bar.5.scd
index 42e59d57d..27709d071 100644
--- a/sway/sway-bar.5.scd
+++ b/sway/sway-bar.5.scd
@@ -222,6 +222,10 @@ must be defined in hex: _#RRGGBB_ or _#RRGGBBAA_.
 	Border, background and text color for a workspace button when the workspace
 	contains a window with the urgency hint set.
 
+*empty_workspace* <border> <background> <text>
+	Border, background and text color for a workspace button when the workspace
+	contains no windows and is not active.
+
 *binding_mode* <border> <background> <text>
 	Border, background and text color for the binding mode indicator. If not used,
 	the colors will be taken from _urgent_workspace_.
diff --git a/sway/sway-ipc.7.scd b/sway/sway-ipc.7.scd
index e49c97a04..b62991a39 100644
--- a/sway/sway-ipc.7.scd
+++ b/sway/sway-ipc.7.scd
@@ -918,6 +918,15 @@ containing the _#RRGGBBAA_ representation of the color:
 |- urgent_workspace_border
 :  The color to use for the border of the workspace buttons for workspaces that
    contain an urgent view
+|- empty_workspace_text
+:  The color to use for the text of the workspace buttons for workspaces that
+   are empty
+|- empty_workspace_bg
+:  The color to use for the background of the workspace buttons for workspaces
+   that are empty
+|- empty_workspace_border
+:  The color to use for the border of the workspace buttons for workspaces that
+   are empty
 |- binding_mode_text
 :  The color to use for the text of the binding mode indicator
 |- binding_mode_bg
@@ -967,6 +976,9 @@ containing the _#RRGGBBAA_ representation of the color:
 		"urgent_workspace_border": "#2f343aff",
 		"urgent_workspace_bg": "#900000ff",
 		"urgent_workspace_text": "#ffffffff",
+		"empty_workspace_border": "#000000ff",
+		"empty_workspace_bg": "#000000ff",
+		"empty_workspace_text": "#666666ff",
 		"binding_mode_border": "#2f343aff",
 		"binding_mode_bg": "#900000ff",
 		"binding_mode_text": "#ffffffff"

From 5438d6631f0fd93f07f0d4f44e8639c10558eb04 Mon Sep 17 00:00:00 2001
From: Marko <marko@pepega.club>
Date: Sat, 10 Jun 2023 03:10:05 +0200
Subject: [PATCH 7/7] Make sure to send the `empty` event

---
 sway/tree/workspace.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/sway/tree/workspace.c b/sway/tree/workspace.c
index b32f15aab..921e8f6bd 100644
--- a/sway/tree/workspace.c
+++ b/sway/tree/workspace.c
@@ -155,10 +155,6 @@ void workspace_begin_destroy(struct sway_workspace *workspace) {
 }
 
 void workspace_consider_destroy(struct sway_workspace *ws) {
-	if (ws->persistent) {
-		return;
-	}
-
 	if (ws->tiling->length || ws->floating->length) {
 		return;
 	}
@@ -175,6 +171,11 @@ void workspace_consider_destroy(struct sway_workspace *ws) {
 		}
 	}
 
+	if (ws->persistent) {
+		ipc_event_workspace(NULL, ws, "empty");
+		return;
+	}
+
 	workspace_begin_destroy(ws);
 }