// registermanager.cpp
#include "registermanager.h"
#include "item.h"

RegisterManager::RegisterManager(QObject *parent) : QObject(parent) {}

void RegisterManager::bindItem(Item* item, const QString& registerId)
{
    if (registerId.isEmpty() || !item) return;

    // 添加到映射表
    registerMap[registerId].append(item);

    // 连接图元销毁信号
    connect(item, &Item::destroyed, this, [this, item, registerId](){
        if (registerMap.contains(registerId)) {
            registerMap[registerId].removeAll(item);
            if (registerMap[registerId].isEmpty()) {
                registerMap.remove(registerId);
            }
        }
    });
}

void RegisterManager::updateRegisterValue(const QString& registerId, quint16 value)
{
    if (!registerMap.contains(registerId)) return;

    // 更新所有绑定该寄存器的图元
    for (Item* item : registerMap[registerId]) {
        item->setRegisterValue(value);
        item->update(); // 刷新显示
    }
}

QStringList RegisterManager::getAllRegisteredRegisters() const
{
    return registerMap.keys();
}

QList<Item*> RegisterManager::getItemsForRegister(const QString& registerId) const
{
    return registerMap.value(registerId, QList<Item*>());
}