added "move container to workspace"

makes the previous commit actually testable

include/layout.h

@@ -22,6 +22,7 @@ swayc_t *remove_child(swayc_t *child);
 void swap_container(swayc_t *a, swayc_t *b);
 
 void move_container(swayc_t* container,swayc_t* root,enum movement_direction direction);
+void move_container_to(swayc_t* container, swayc_t* destination);
 
 // Layout
 void update_geometry(swayc_t *view);

sway/commands.c

@@ -344,7 +344,7 @@ static bool cmd_focus_follows_mouse(struct sway_config *config, int argc, char *
 }
 
 static bool cmd_move(struct sway_config *config, int argc, char **argv) {
-	if (!checkarg(argc, "workspace", EXPECTED_EQUAL_TO, 1)) {
+	if (!checkarg(argc, "workspace", EXPECTED_AT_LEAST, 1)) {
 		return false;
 	}
 
@@ -358,6 +358,29 @@ static bool cmd_move(struct sway_config *config, int argc, char **argv) {
 		move_container(view,&root_container,MOVE_UP);
 	} else if (strcasecmp(argv[0], "down") == 0) {
 		move_container(view,&root_container,MOVE_DOWN);
+	} else if (strcasecmp(argv[0], "container") == 0 || strcasecmp(argv[0], "window") == 0) {
+		// "move container to workspace x"
+		if (!checkarg(argc, "move container/window", EXPECTED_EQUAL_TO, 4) ||
+			strcasecmp(argv[1], "to") != 0 ||
+			strcasecmp(argv[2], "workspace") != 0) {
+			return false;
+		}
+
+		if (view->type != C_CONTAINER && view->type != C_VIEW) {
+			return false;
+		}
+
+		const char *ws_name = argv[3];
+		if (argc == 5) {
+			// move "container to workspace number x"
+			ws_name = argv[4];
+		}
+
+		swayc_t *ws = workspace_by_name(ws_name);
+		if (ws == NULL) {
+			ws = workspace_create(ws_name);
+		}
+		move_container_to(view, ws);
 	} else {
 		return false;
 	}

sway/layout.c

@@ -203,6 +203,21 @@ void move_container(swayc_t *container,swayc_t* root,enum movement_direction dir
 
 }
 
+void move_container_to(swayc_t* container, swayc_t* destination) {
+	if (container->parent == destination) {
+		return;
+	}
+	destroy_container(remove_child(container));
+	set_focused_container(get_focused_view(&root_container));
+	if (container->is_floating) {
+		add_floating(destination, container);
+	} else {
+		add_child(destination, container);
+	}
+	update_visibility(container);
+	arrange_windows(&root_container, -1, -1);
+}
+
 void update_geometry(swayc_t *container) {
 	if (container->type != C_VIEW) {
 		return;