beerlog/models/summarymodel.cpp

#include "summarymodel.h"

QVariantList SummaryModel::items() const
{
    return m_items.values();
}

float SummaryModel::sum() const
{
    float res = 0.0;
    for (auto it = m_items.constBegin(); it != m_items.constEnd(); ++it) {
        QVariantMap item = it.value().toMap();
        int count = item.value("count", 0).toInt();
        float price = item.value("cost", 0.0).toFloat();
        res += count * price;
    }
    return res;
}

void SummaryModel::setItemCount(QVariantMap item, int count)
{
    QString id = item.value("id", QString()).toString();

    if (count) {
        item["count"] = count;
        m_items[id] = item;
    } else {
        m_items.remove(id);
    }

    emit itemsChanged();
}

void SummaryModel::clear()
{
    m_items.clear();

    emit itemsChanged();
}