Bankable/Abstract/MIDIButtonMatrix.hpp

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#pragma once
 
#include <AH/Containers/Array.hpp>
#include <AH/Hardware/ButtonMatrix.hpp>
#include <Banks/BankableAddresses.hpp>
#include <Def/Def.hpp>
#include <MIDI_Outputs/Abstract/MIDIOutputElement.hpp>
 
BEGIN_CS_NAMESPACE
 
namespace Bankable {
 
template <class BankAddress, class Sender, uint8_t NumRows, uint8_t NumCols>
class MIDIButtonMatrix
    : public MIDIOutputElement,
      public AH::ButtonMatrix<
          MIDIButtonMatrix<BankAddress, Sender, NumRows, NumCols>, NumRows,
          NumCols> {
    using ButtonMatrix = AH::ButtonMatrix<MIDIButtonMatrix, NumRows, NumCols>;
    friend class AH::ButtonMatrix<MIDIButtonMatrix, NumRows, NumCols>;
 
  protected:
    MIDIButtonMatrix(BankAddress bankAddress, const PinList<NumRows> &rowPins,
                     const PinList<NumCols> &colPins, const Sender &sender)
        : ButtonMatrix(rowPins, colPins), address(bankAddress), sender(sender) {
    }
 
  public:
    void begin() override { ButtonMatrix::begin(); }
 
    void update() override { ButtonMatrix::update(); }
 
  private:
    void onButtonChanged(uint8_t row, uint8_t col, bool state) {
        if (state == LOW) {
            if (!activeButtons)
                address.lock(); // Don't allow changing of the bank setting
            activeButtons++;
            sender.sendOn(address.getActiveAddress(row, col));
        } else {
            sender.sendOff(address.getActiveAddress(row, col));
            activeButtons--;
            if (!activeButtons)
                address.unlock();
        }
    }
 
  protected:
    BankAddress address;
    uint16_t activeButtons = 0;
 
  public:
    Sender sender;
};
 
} // namespace Bankable
 
END_CS_NAMESPACE