esphome/esphome/components/binary_sensor/binary_sensor.h

95 lines
2.9 KiB
C++

#pragma once
#include "esphome/core/component.h"
#include "esphome/core/helpers.h"
#include "esphome/components/binary_sensor/filter.h"
namespace esphome {
namespace binary_sensor {
#define LOG_BINARY_SENSOR(prefix, type, obj) \
if (obj != nullptr) { \
ESP_LOGCONFIG(TAG, "%s%s '%s'", prefix, type, obj->get_name().c_str()); \
if (!obj->get_device_class().empty()) { \
ESP_LOGCONFIG(TAG, "%s Device Class: '%s'", prefix, obj->get_device_class().c_str()); \
} \
}
/** Base class for all binary_sensor-type classes.
*
* This class includes a callback that components such as MQTT can subscribe to for state changes.
* The sub classes should notify the front-end of new states via the publish_state() method which
* handles inverted inputs for you.
*/
class BinarySensor : public Nameable {
public:
explicit BinarySensor();
/** Construct a binary sensor with the specified name
*
* @param name Name of this binary sensor.
*/
explicit BinarySensor(const std::string &name);
/** Add a callback to be notified of state changes.
*
* @param callback The void(bool) callback.
*/
void add_on_state_callback(std::function<void(bool)> &&callback);
/** Publish a new state to the front-end.
*
* @param state The new state.
*/
void publish_state(bool state);
/** Publish the initial state, this will not make the callback manager send callbacks
* and is meant only for the initial state on boot.
*
* @param state The new state.
*/
void publish_initial_state(bool state);
/// The current reported state of the binary sensor.
bool state;
/// Manually set the Home Assistant device class (see binary_sensor::device_class)
void set_device_class(const std::string &device_class);
/// Get the device class for this binary sensor, using the manual override if specified.
std::string get_device_class();
void add_filter(Filter *filter);
void add_filters(std::vector<Filter *> filters);
// ========== INTERNAL METHODS ==========
// (In most use cases you won't need these)
void send_state_internal(bool state, bool is_initial);
/// Return whether this binary sensor has outputted a state.
virtual bool has_state() const;
virtual bool is_status_binary_sensor() const;
// ========== OVERRIDE METHODS ==========
// (You'll only need this when creating your own custom binary sensor)
/// Get the default device class for this sensor, or empty string for no default.
virtual std::string device_class();
protected:
uint32_t hash_base() override;
CallbackManager<void(bool)> state_callback_{};
optional<std::string> device_class_{}; ///< Stores the override of the device class
Filter *filter_list_{nullptr};
bool has_state_{false};
Deduplicator<bool> publish_dedup_;
};
class BinarySensorInitiallyOff : public BinarySensor {
public:
bool has_state() const override { return true; }
};
} // namespace binary_sensor
} // namespace esphome