From 8b9f4c78b854c64077b8bc9df8d7e760790a67de Mon Sep 17 00:00:00 2001
From: HB <you@example.com>
Date: Tue, 29 Sep 2020 17:58:15 +0200
Subject: [PATCH] fan state callback mechanism

---
 .../empty_custom_fan/fan/empty_custom_fan.cpp              | 7 ++++++-
 custom_components/empty_custom_fan/fan/empty_custom_fan.h  | 6 +-----
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/custom_components/empty_custom_fan/fan/empty_custom_fan.cpp b/custom_components/empty_custom_fan/fan/empty_custom_fan.cpp
index 62a9c1b..99841ee 100644
--- a/custom_components/empty_custom_fan/fan/empty_custom_fan.cpp
+++ b/custom_components/empty_custom_fan/fan/empty_custom_fan.cpp
@@ -18,7 +18,12 @@ void EmptyCustomFan::setup() {
 }
 
 void EmptyCustomFan::loop() {
- 
+  if (!this->next_update_) {
+    return; //no state change, nothing to do
+  }
+  this->next_update_ = false;
+  
+  //there was a state change, do something here.
 }
 
 void EmptyCustomFan::dump_config() {
diff --git a/custom_components/empty_custom_fan/fan/empty_custom_fan.h b/custom_components/empty_custom_fan/fan/empty_custom_fan.h
index f460c2c..43d35dc 100644
--- a/custom_components/empty_custom_fan/fan/empty_custom_fan.h
+++ b/custom_components/empty_custom_fan/fan/empty_custom_fan.h
@@ -14,14 +14,10 @@ class EmptyCustomFan : public Component {
   void setup() override;
   void loop() override;
   void dump_config() override;
-  void set_oscillating(output::BinaryOutput *oscillating) { this->oscillating_ = oscillating; }
-  void set_direction(output::BinaryOutput *direction) { this->direction_ = direction; }
-
+  
  protected:
   fan::FanState *fan_;
   output::BinaryOutput *output_;
-  output::BinaryOutput *oscillating_{nullptr};
-  output::BinaryOutput *direction_{nullptr};
   bool next_update_{true};
 };