fixed segfault on exit + a little fixup of that floatfocus pr

include/focus.h

@@ -19,6 +19,7 @@ enum movement_direction {
 
 swayc_t *get_focused_container(swayc_t *parent);
 swayc_t *get_focused_view(swayc_t *parent);
+swayc_t *get_focused_float(swayc_t *ws);
 
 void set_focused_container(swayc_t *container);
 void set_focused_container_for(swayc_t *ancestor, swayc_t *container);

sway/container.c

@@ -477,7 +477,7 @@ swayc_t *swayc_active_workspace_for(swayc_t *cont) {
 		/* Fallthrough */
 
 	case C_OUTPUT:
-		cont = cont->focused;
+		cont = cont ? cont->focused : NULL;
 		/* Fallthrough */
 
 	case C_WORKSPACE:

sway/focus.c

@@ -164,14 +164,25 @@ void set_focused_container_for(swayc_t *a, swayc_t *c) {
 }
 
 swayc_t *get_focused_view(swayc_t *parent) {
-	while (parent && parent->type != C_VIEW) {
-		if (parent->type == C_WORKSPACE && parent->focused == NULL) {
-			return parent;
+	swayc_t *c = parent;
+	while (c && c->type != C_VIEW) {
+		if (c->type == C_WORKSPACE && c->focused == NULL) {
+			return c;
 		}
-		parent = parent->focused;
+		c = c->focused;
 	}
-	if (parent == NULL) {
-		return swayc_active_workspace_for(parent);
+	if (c == NULL) {
+		c = swayc_active_workspace_for(parent);
 	}
-	return parent;
+	return c;
+}
+
+swayc_t *get_focused_float(swayc_t *ws) {
+	if(!sway_assert(ws->type == C_WORKSPACE, "must be of workspace type")) {
+		ws = swayc_active_workspace();
+	}
+	if (ws->floating->length) {
+		return ws->floating->items[ws->floating->length - 1];
+	}
+	return NULL;
 }

sway/handlers.c

@@ -231,14 +231,7 @@ static void handle_view_destroyed(wlc_handle handle) {
 		break;
 	}
 
-	swayc_t *focused_view = get_focused_view(&root_container);
-	if (focused_view->type == C_WORKSPACE && focused_view->children->length == 0) {
-		if (focused_view->floating->length > 0) {
-			focused_view = focused_view->floating->items[focused_view->floating->length-1];
-			focused_view = get_focused_view(focused_view);
-		}
-	}
-	set_focused_container(focused_view);
+	set_focused_container(get_focused_view(&root_container));
 }
 
 static void handle_view_focus(wlc_handle view, bool focus) {

sway/layout.c

@@ -151,7 +151,9 @@ swayc_t *remove_child(swayc_t *child) {
 	// Set focused to new container
 	if (parent->focused == child) {
 		if (parent->children->length > 0) {
-			parent->focused = parent->children->items[i?i-1:0];
+			parent->focused = parent->children->items[i ? i-1:0];
+		} else if (parent->floating && parent->floating->length) {
+			parent->focused = parent->floating->items[parent->floating->length - 1];
 		} else {
 			parent->focused = NULL;
 		}