Implement title_format

This implements the title_format command, with a new placeholder %shell
which gets substituted with the view type (xwayland, xdg_shell_v6 or
wl_shell).

Example config:

    for_window [title=".*"] title_format %title (class=%class instance=%instance shell=%shell)

2 files changed, 2 insertions, 3 deletions

diff --git a/sway/desktop/xdg_shell_v6.c b/sway/desktop/xdg_shell_v6.c
index 5880e9a9..fcee8ce9 100644
--- a/sway/desktop/xdg_shell_v6.c
+++ b/sway/desktop/xdg_shell_v6.c
@@ -176,8 +176,7 @@ static void handle_commit(struct wl_listener *listener, void *data) {
         // TODO: Let floating views do whatever
         view_update_size(view, xdg_shell_v6_view->pending_width,
                 xdg_shell_v6_view->pending_height);
-        container_update_title(view->swayc,
-                        view->wlr_xdg_surface_v6->toplevel->title);
+        view_update_title(view, false);
         view_damage(view, false);
 }
 
diff --git a/sway/desktop/xwayland.c b/sway/desktop/xwayland.c
index a1e672ce..b4eda71f 100644
--- a/sway/desktop/xwayland.c
+++ b/sway/desktop/xwayland.c
@@ -223,7 +223,7 @@ static void handle_commit(struct wl_listener *listener, void *data) {
         view_update_size(view, xwayland_view->pending_width,
                 xwayland_view->pending_height);
         view_damage(view, false);
-        container_update_title(view->swayc, view->wlr_xwayland_surface->title);
+        view_update_title(view, false);
 }
 
 static void handle_unmap(struct wl_listener *listener, void *data) {