From dfb14fc6ea90613cabf71c88c677933438afadfa Mon Sep 17 00:00:00 2001
From: Clyde Stubbs <2366188+clydebarrow@users.noreply.github.com>
Date: Mon, 11 Mar 2024 18:13:41 +1100
Subject: [PATCH] Add state listeners to `rotary_encoder` (#6035)

---
 esphome/components/rotary_encoder/rotary_encoder.cpp | 1 +
 esphome/components/rotary_encoder/rotary_encoder.h   | 7 +++++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/esphome/components/rotary_encoder/rotary_encoder.cpp b/esphome/components/rotary_encoder/rotary_encoder.cpp
index 7440214b1c..a3631ffe27 100644
--- a/esphome/components/rotary_encoder/rotary_encoder.cpp
+++ b/esphome/components/rotary_encoder/rotary_encoder.cpp
@@ -226,6 +226,7 @@ void RotaryEncoderSensor::loop() {
     }
     this->store_.last_read = counter;
     this->publish_state(counter);
+    this->listeners_.call(counter);
     this->publish_initial_value_ = false;
   }
 }
diff --git a/esphome/components/rotary_encoder/rotary_encoder.h b/esphome/components/rotary_encoder/rotary_encoder.h
index deba3d952d..e88ee9152a 100644
--- a/esphome/components/rotary_encoder/rotary_encoder.h
+++ b/esphome/components/rotary_encoder/rotary_encoder.h
@@ -92,6 +92,8 @@ class RotaryEncoderSensor : public sensor::Sensor, public Component {
     this->on_anticlockwise_callback_.add(std::move(callback));
   }
 
+  void register_listener(std::function<void(uint32_t)> listener) { this->listeners_.add(std::move(listener)); }
+
  protected:
   InternalGPIOPin *pin_a_;
   InternalGPIOPin *pin_b_;
@@ -102,8 +104,9 @@ class RotaryEncoderSensor : public sensor::Sensor, public Component {
 
   RotaryEncoderSensorStore store_{};
 
-  CallbackManager<void()> on_clockwise_callback_;
-  CallbackManager<void()> on_anticlockwise_callback_;
+  CallbackManager<void()> on_clockwise_callback_{};
+  CallbackManager<void()> on_anticlockwise_callback_{};
+  CallbackManager<void(int32_t)> listeners_{};
 };
 
 template<typename... Ts> class RotaryEncoderSetValueAction : public Action<Ts...> {