wayland: track multiple terminals

The wayland 'term' member is gone and replaced by a list,
'terms'. This list contains all currently running terminal (windows).

main.c

@@ -146,20 +146,22 @@ main(int argc, char *const *argv)
     if ((term = term_init(&conf, fdm, wayl, argc, argv)) == NULL)
         goto out;
 
-    while (true) {
-        wl_display_flush(term->wl->display);  /* TODO: figure out how to get rid of this */
+    while (tll_length(wayl->terms) > 0) {
+        wl_display_flush(wayl->display);  /* TODO: figure out how to get rid of this */
 
         if (!fdm_poll(fdm))
             break;
     }
 
-    if (term->quit)
-        ret = EXIT_SUCCESS;
+    ret = tll_length(wayl->terms) == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
 
 out:
     shm_fini();
 
-    int child_ret = term_destroy(term);
+    int child_ret = EXIT_SUCCESS;
+    tll_foreach(wayl->terms, it)
+        child_ret = term_destroy(it->item);
+
     wayl_destroy(wayl);
     fdm_destroy(fdm);
     config_free(conf);

terminal.c

@@ -472,7 +472,7 @@ term_init(const struct config *conf, struct fdm *fdm, struct wayland *wayl,
         goto err;
     }
 
-    wayl->term = term;
+    tll_push_back(wayl->terms, term);
     return term;
 
 err:

wayland.c

@@ -123,8 +123,8 @@ output_scale(void *data, struct wl_output *wl_output, int32_t factor)
 
     mon->scale = factor;
 
-    struct terminal *term = mon->wayl->term;
-    if (term != NULL) {
+    tll_foreach(mon->wayl->terms, it) {
+        struct terminal *term = it->item;
         render_resize(term, term->width / term->scale, term->height / term->scale);
         wayl_reload_cursor_theme(mon->wayl, term);
     }
@@ -394,7 +394,7 @@ fdm_wayl(struct fdm *fdm, int fd, int events, void *data)
         return false;
     }
 
-    return event_count != -1 && !wayl->term->quit;
+    return event_count != -1;
 }
 
 static bool
@@ -763,14 +763,24 @@ wayl_update_cursor_surface(struct wayland *wayl, struct terminal *term)
 struct terminal *
 wayl_terminal_from_surface(struct wayland *wayl, struct wl_surface *surface)
 {
-    assert(surface == wayl->term->window->surface);
-    return wayl->term;
+    tll_foreach(wayl->terms, it) {
+        if (it->item->window->surface == surface)
+            return it->item;
+    }
+
+    assert(false);
+    return NULL;
 }
 
 struct terminal *
 wayl_terminal_from_xdg_toplevel(struct wayland *wayl,
                                 struct xdg_toplevel *toplevel)
 {
-    assert(toplevel == wayl->term->window->xdg_toplevel);
-    return wayl->term;
+    tll_foreach(wayl->terms, it) {
+        if (it->item->window->xdg_toplevel == toplevel)
+            return it->item;
+    }
+
+    assert(false);
+    return NULL;
 }

wayland.h

@@ -145,8 +145,7 @@ struct wayland {
     bool have_argb8888;
     tll(struct monitor) monitors;  /* All available outputs */
 
-    /* TODO: turn into a list to support multiple windows */
-    struct terminal *term;
+    tll(struct terminal *) terms;
     struct terminal *focused;
     struct terminal *moused;
 };