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mirror of https://github.com/esphome/esphome.git synced 2025-04-13 14:20:29 +01:00
Jesse Hills dd37a4e04c
Add Number entities (from Home Assistant) (#1971)
Co-authored-by: Oxan van Leeuwen <oxan@oxanvanleeuwen.nl>
2021-07-13 07:20:12 +12:00

113 lines
3.2 KiB
C++

#pragma once
#include "esphome/core/component.h"
#include "esphome/core/helpers.h"
namespace esphome {
namespace number {
#define LOG_NUMBER(prefix, type, obj) \
if ((obj) != nullptr) { \
ESP_LOGCONFIG(TAG, "%s%s '%s'", prefix, type, (obj)->get_name().c_str()); \
if (!(obj)->get_icon().empty()) { \
ESP_LOGCONFIG(TAG, "%s Icon: '%s'", prefix, (obj)->get_icon().c_str()); \
} \
}
class Number;
class NumberCall {
public:
explicit NumberCall(Number *parent) : parent_(parent) {}
NumberCall &set_value(float value);
void perform();
const optional<float> &get_value() const;
protected:
Number *const parent_;
optional<float> value_;
};
/** Base-class for all numbers.
*
* A number can use publish_state to send out a new value.
*/
class Number : public Nameable {
public:
explicit Number();
explicit Number(const std::string &name);
/** Manually set the icon of this number. By default the number's default defined by icon() is used.
*
* @param icon The icon, for example "mdi:flash". "" to disable.
*/
void set_icon(const std::string &icon);
/// Get the Home Assistant Icon. Uses the manual override if specified or the default value instead.
std::string get_icon();
/// Getter-syntax for .state.
float get_state() const;
/// Get the accuracy in decimals. Based on the step value.
int8_t get_accuracy_decimals();
/** Publish the current state to the front-end.
*/
void publish_state(float state);
NumberCall make_call();
// ========== INTERNAL METHODS ==========
// (In most use cases you won't need these)
/// Add a callback that will be called every time the state changes.
void add_on_state_callback(std::function<void(float)> &&callback);
/** This member variable stores the last state.
*
* On startup, when no state is available yet, this is NAN (not-a-number) and the validity
* can be checked using has_state().
*
* This is exposed through a member variable for ease of use in esphome lambdas.
*/
float state;
/// Return whether this number has gotten a full state yet.
bool has_state() const;
/// Return with which interval the number is polled. Return 0 for non-polling mode.
virtual uint32_t update_interval();
void set_min_value(float min_value) { this->min_value_ = min_value; }
void set_max_value(float max_value) { this->max_value_ = max_value; }
void set_step(float step) { this->step_ = step; }
float get_min_value() const { return this->min_value_; }
float get_max_value() const { return this->max_value_; }
float get_step() const { return this->step_; }
protected:
friend class NumberCall;
/** Set the value of the number, this is a virtual method that each number integration must implement.
*
* This method is called by the NumberCall.
*
* @param value The value as validated by the NumberCall.
*/
virtual void set(float value) = 0;
uint32_t hash_base() override;
CallbackManager<void(float)> state_callback_;
/// Override the icon advertised to Home Assistant, otherwise number's icon will be used.
optional<std::string> icon_;
bool has_state_{false};
float step_{1.0};
float min_value_{0};
float max_value_{100};
};
} // namespace number
} // namespace esphome