Bankable/Abstract/MIDIButtons.hpp

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#pragma once
 
#include <AH/Hardware/Button.hpp>
#include <Banks/BankableMIDIOutput.hpp>
#include <Def/Def.hpp>
#include <AH/Containers/Array.hpp>
#include <MIDI_Outputs/Abstract/MIDIOutputElement.hpp>
 
BEGIN_CS_NAMESPACE
 
namespace Bankable {
 
template <class Sender, uint8_t NUMBER_OF_BUTTONS>
class MIDIButtons : public BankableMIDIOutput, public MIDIOutputElement {
  protected:
    MIDIButtons(const OutputBankConfig &config,
                const Array<AH::Button, NUMBER_OF_BUTTONS> &buttons,
                const MIDICNChannelAddress &baseAddress,
                const RelativeMIDICNChannelAddress &incrementAddress,
                const Sender &sender)
        : BankableMIDIOutput(config), buttons{buttons},
          baseAddress(baseAddress),
          incrementAddress(incrementAddress), sender{sender} {}
 
  public:
    void begin() final override {
        for (auto &button : buttons)
            button.begin();
    }
    void update() final override {
        MIDICNChannelAddress address = baseAddress;
        for (auto &button : buttons) {
            AH::Button::State state = button.update();
            if (state == AH::Button::Falling) {
                if (!activeButtons)
                    lock(); // Don't allow changing of the bank setting
                MIDICNChannelAddress sendAddress = address + getAddressOffset();
                activeButtons++;
                sender.sendOn(sendAddress);
            } else if (state == AH::Button::Rising) {
                MIDICNChannelAddress sendAddress = address + getAddressOffset();
                sender.sendOff(sendAddress);
                activeButtons--;
                if (!activeButtons)
                    unlock();
            }
            address += incrementAddress;
        }
    }
 
#ifdef AH_INDIVIDUAL_BUTTON_INVERT
    void invert() {
        for (auto &button : buttons)
            button.invert();
    }
#endif
 
    AH::Button::State getButtonState(size_t index) const {
        return buttons[index].getState();
    }
 
  private:
    Array<AH::Button, NUMBER_OF_BUTTONS> buttons;
    const MIDICNChannelAddress baseAddress;
    const RelativeMIDICNChannelAddress incrementAddress;
    uint8_t activeButtons = 0;
 
  public:
    Sender sender;
};
 
} // namespace Bankable
 
END_CS_NAMESPACE