basic focus overhaul

sway/tree/container.c

@@ -158,12 +158,13 @@ swayc_t *new_output(struct sway_output *sway_output) {
 	// struct instead of trying to do focus semantics like this
 	struct sway_seat *seat = NULL;
 	wl_list_for_each(seat, &input_manager->seats, link) {
-		if (!seat->focus) {
-			seat->focus = ws;
+		if (!seat->has_focus) {
+			sway_seat_set_focus(seat, ws);
 		}
 	}
 
 	free(ws_name);
+	wl_signal_emit(&root_container.sway_root->events.new_container, output);
 	return output;
 }
 
@@ -185,6 +186,7 @@ swayc_t *new_workspace(swayc_t *output, const char *name) {
 
 	add_child(output, workspace);
 	sort_workspaces(output);
+	wl_signal_emit(&root_container.sway_root->events.new_container, workspace);
 	return workspace;
 }
 
@@ -207,9 +209,9 @@ swayc_t *new_view(swayc_t *sibling, struct sway_view *sway_view) {
 		add_child(sibling, swayc);
 	} else {
 		// Regular case, create as sibling of current container
-		// TODO WLR
-		//add_sibling(sibling, swayc);
+		add_sibling(sibling, swayc);
 	}
+	wl_signal_emit(&root_container.sway_root->events.new_container, swayc);
 	return swayc;
 }
 
@@ -378,3 +380,26 @@ void container_map(swayc_t *container, void (*f)(swayc_t *view, void *data), voi
 		f(container, data);
 	}
 }
+
+/**
+ * Get a list of containers that are descendents of the container in rendering
+ * order
+ */
+list_t *container_list_children(swayc_t *con) {
+	list_t *list = create_list();
+	list_t *queue = create_list();
+
+	list_add(queue, con);
+
+	swayc_t *current = NULL;
+	while (queue->length) {
+		current = queue->items[0];
+		list_del(queue, 0);
+		list_add(list, current);
+		// TODO floating containers
+		list_cat(queue, current->children);
+	}
+
+	list_free(queue);
+	return list;
+}

sway/tree/layout.c

@@ -48,10 +48,12 @@ void init_layout(void) {
 	root_container.layout = L_NONE;
 	root_container.name = strdup("root");
 	root_container.children = create_list();
+	wl_signal_init(&root_container.events.destroy);
 
 	root_container.sway_root = calloc(1, sizeof(*root_container.sway_root));
 	root_container.sway_root->output_layout = wlr_output_layout_create();
 	wl_list_init(&root_container.sway_root->unmanaged_views);
+	wl_signal_init(&root_container.sway_root->events.new_container);
 
 	root_container.sway_root->output_layout_change.notify =
 		output_layout_change_notify;
@@ -59,6 +61,34 @@ void init_layout(void) {
 		&root_container.sway_root->output_layout_change);
 }
 
+int index_child(const swayc_t *child) {
+	// TODO handle floating
+	swayc_t *parent = child->parent;
+	int i, len;
+	len = parent->children->length;
+	for (i = 0; i < len; ++i) {
+		if (parent->children->items[i] == child) {
+			break;
+		}
+	}
+
+	if (!sway_assert(i < len, "Stray container")) {
+		return -1;
+	}
+	return i;
+}
+
+swayc_t *add_sibling(swayc_t *fixed, swayc_t *active) {
+	// TODO handle floating
+	swayc_t *parent = fixed->parent;
+	int i = index_child(fixed);
+	list_insert(parent->children, i + 1, active);
+	active->parent = parent;
+	// focus new child
+	parent->focused = active;
+	return active->parent;
+}
+
 void add_child(swayc_t *parent, swayc_t *child) {
 	wlr_log(L_DEBUG, "Adding %p (%d, %fx%f) to %p (%d, %fx%f)",
 			child, child->type, child->width, child->height,

sway/tree/workspace.c

@@ -63,9 +63,10 @@ static bool _workspace_by_name(swayc_t *view, void *data) {
 swayc_t *workspace_by_name(const char *name) {
 	struct sway_seat *seat = input_manager_current_seat(input_manager);
 	swayc_t *current_workspace = NULL, *current_output = NULL;
-	if (seat->focus) {
-		current_workspace = swayc_parent_by_type(seat->focus, C_WORKSPACE);
-		current_output = swayc_parent_by_type(seat->focus, C_OUTPUT);
+	if (seat->has_focus) {
+		swayc_t *focus = sway_seat_get_focus(seat, &root_container);
+		current_workspace = swayc_parent_by_type(focus, C_WORKSPACE);
+		current_output = swayc_parent_by_type(focus, C_OUTPUT);
 	}
 	if (strcmp(name, "prev") == 0) {
 		return workspace_prev(current_workspace);
@@ -102,7 +103,8 @@ swayc_t *workspace_create(const char *name) {
 	}
 	// Otherwise create a new one
 	struct sway_seat *seat = input_manager_current_seat(input_manager);
-	parent = seat->focus;
+	swayc_t *focus = sway_seat_get_focus(seat, &root_container);
+	parent = focus;
 	parent = swayc_parent_by_type(parent, C_OUTPUT);
 	return new_workspace(parent, name);
 }
@@ -193,12 +195,13 @@ bool workspace_switch(swayc_t *workspace) {
 		return false;
 	}
 	struct sway_seat *seat = input_manager_current_seat(input_manager);
-	if (!seat || !seat->focus) {
+	swayc_t *focus = sway_seat_get_focus(seat, &root_container);
+	if (!seat || !focus) {
 		return false;
 	}
-	swayc_t *active_ws = seat->focus;
+	swayc_t *active_ws = focus;
 	if (active_ws->type != C_WORKSPACE) {
-		swayc_parent_by_type(seat->focus, C_WORKSPACE);
+		swayc_parent_by_type(focus, C_WORKSPACE);
 	}
 
 	if (config->auto_back_and_forth