esphome-xiaomi_bslamp2/binary_sensor/touch_binary_sensor.h

#pragma once 

#include "../common.h"
#include "../front_panel_hal.h"
#include "esphome/components/binary_sensor/binary_sensor.h"

namespace esphome {
namespace xiaomi {
namespace bslamp2 {

/**
 * This class implements a binary sensor for the touch buttons
 * and touch slider on the front panel of the Xiaomi Mijia Bedside Lamp 2.
 */
class XiaomiBslamp2TouchBinarySensor : public binary_sensor::BinarySensor, public Component {
public:
    void set_parent(FrontPanelHAL *front_panel) {
        front_panel_ = front_panel;
    }

    void set_for(int part) {
        for_ = part;
    }

    void setup() {
        front_panel_->add_on_event_callback(
            [this](EVENT ev) {
                auto part_in_event = ev & FLAG_PART_MASK;
                if (for_ == 0 || part_in_event == for_) {
                    auto new_state = (ev & FLAG_TYPE_MASK) == FLAG_TYPE_TOUCH;
                    this->publish_state(new_state);
                }
            }
        );
    }

    void dump_config() {
        ESP_LOGCONFIG(TAG, "Front panel binary_sensor:");
        ESP_LOGCONFIG(TAG, "  For: %s",
            for_ & FLAG_PART_POWER ? "power button" :
            for_ & FLAG_PART_COLOR ? "color button" :
            for_ & FLAG_PART_SLIDER ? "slider" : "ERR");
    }

protected:
    FrontPanelHAL *front_panel_;
    EVENT for_ = 0;
};
    
} // namespace bslamp2
} // namespace xiaomi
} // namespace esphome