Initial commit

models/summarymodel.cpp

@@ -0,0 +1,39 @@
+#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();
+}