rootston: multiple activated views

rootston/seat.c

@@ -430,12 +430,35 @@ void roots_seat_focus_view(struct roots_seat *seat, struct roots_view *view) {
 	if (seat->focus == view) {
 		return;
 	}
-	seat->focus = view;
-	seat->cursor->mode = ROOTS_CURSOR_PASSTHROUGH;
+
+	// unfocus the old view if it is not focused by some other seat
+	// TODO probably should be an input function
+	if (seat->focus) {
+		bool has_other_focus = false;
+		struct roots_seat *iter_seat;
+		wl_list_for_each(iter_seat, &seat->input->seats, link) {
+			if (iter_seat == seat) {
+				continue;
+			}
+			if (iter_seat->focus == seat->focus) {
+				has_other_focus = true;
+				break;
+			}
+		}
+
+		if (!has_other_focus) {
+			view_activate(seat->focus, false);
+		}
+	}
+
 	if (!view) {
+		seat->focus = NULL;
+		seat->cursor->mode = ROOTS_CURSOR_PASSTHROUGH;
 		return;
 	}
 
+	seat->focus = view;
+
 	if (view->type == ROOTS_XWAYLAND_VIEW &&
 			view->xwayland_surface->override_redirect) {
 		return;
@@ -444,12 +467,12 @@ void roots_seat_focus_view(struct roots_seat *seat, struct roots_view *view) {
 	size_t index = 0;
 	for (size_t i = 0; i < desktop->views->length; ++i) {
 		struct roots_view *_view = desktop->views->items[i];
-		if (_view != view) {
-			view_activate(_view, false);
-		} else {
+		if (_view == view) {
 			index = i;
+			break;
 		}
 	}
+
 	view_activate(view, true);
 	// TODO: list_swap
 	wlr_list_del(desktop->views, index);