lvgl_number.h

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#pragma once
 
#include <utility>
 
#include "esphome/components/number/number.h"
#include "esphome/core/component.h"
#include "esphome/core/preferences.h"
 
namespace esphome::lvgl {
 
class LVGLNumber : public number::Number, public Component {
 public:
  LVGLNumber(std::function<void(float)> control_lambda, std::function<float()> value_lambda, bool restore)
      : control_lambda_(std::move(control_lambda)), value_lambda_(std::move(value_lambda)), restore_(restore) {}
 
  void setup() override {
    float value = this->value_lambda_();
    if (this->restore_) {
      this->pref_ = this->make_entity_preference<float>();
      if (this->pref_.load(&value)) {
        this->control_lambda_(value);
      }
    }
    this->publish_state(value);
  }
 
  void on_value() { this->publish_(this->value_lambda_()); }
 
 protected:
  void publish_(float value) {
    this->publish_state(value);
    if (this->restore_)
      this->pref_.save(&value);
  }
  void control(float value) override {
    this->control_lambda_(value);
    this->publish_(value);
  }
  std::function<void(float)> control_lambda_;
  std::function<float()> value_lambda_;
  bool restore_;
  ESPPreferenceObject pref_{};
};
 
}  // namespace esphome::lvgl