Allow for workspace renaming during exec handling

This change adds support for renaming a workspace when `exec` command
is being processed by keeping sway_workspace and pid_workspace names in
sync.

The change can be verified by running following command:

swaymsg exec <application>; swaymsg rename workspace number 1 to 5

Fixes: #3952

1 files changed, 14 insertions, 0 deletions

diff --git a/sway/tree/root.c b/sway/tree/root.c
index 0744192b..5dde9f22 100644
--- a/sway/tree/root.c
+++ b/sway/tree/root.c
@@ -390,3 +390,17 @@ void root_get_box(struct sway_root *root, struct wlr_box *box) {
 	box->width = root->width;
 	box->height = root->height;
 }
+
+void root_rename_pid_workspaces(const char *old_name, const char *new_name) {
+	if (!pid_workspaces.prev && !pid_workspaces.next) {
+		wl_list_init(&pid_workspaces);
+	}
+
+	struct pid_workspace *pw = NULL;
+	wl_list_for_each(pw, &pid_workspaces, link) {
+		if (strcmp(pw->workspace, old_name) == 0) {
+			free(pw->workspace);
+			pw->workspace = strdup(new_name);
+		}
+	}
+}