+ modes.push(mode);
+ startMode(mode);
+ // TODO: create a composite fading mode of top of stack and new mode
+ }
+
+ public Mode popMode() {
+ if (modes.size() > 1) {
+ Mode mode = modes.pop();
+ stopMode(mode);
+ resumeMode(modes.peek());
+ return mode;
+ }
+ return null;
+ // TODO: create a composite fading mode of popped mode and top of stack, unless doing cleanup
+ }
+
+ private void startMode(Mode mode) {
+ mode.setFrameListener(ledController::onFrame);
+ mode.enter(config);
+ }
+
+ private void pauseMode(Mode mode) {
+ mode.pause();
+ }
+
+ private void resumeMode(Mode mode) {
+ mode.resume();
+ }
+
+ private void stopMode(Mode mode) {
+ mode.setFrameListener(ledFrame -> {}); // To avoid any frame being sent to the controller while the thread is exiting
+ mode.exit();