Address Book example: Replace QPair by struct

Introduce Contact struct to store contact data and use it
instead of QPair<QString, QString>. Proper naming really
clarifies the code.

Task-number: QTBUG-60635
Change-Id: Ibfb421dfc854accc382212b0da46e7aafc0d528a
Reviewed-by: Jesus Fernandez <Jesus.Fernandez@qt.io>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>

1 files changed, 25 insertions, 4 deletions

diff --git a/examples/widgets/itemviews/addressbook/tablemodel.h b/examples/widgets/itemviews/addressbook/tablemodel.h
index 9a669c508d..1004a35d31 100644
--- a/examples/widgets/itemviews/addressbook/tablemodel.h
+++ b/examples/widgets/itemviews/addressbook/tablemodel.h
@@ -53,16 +53,37 @@
 
 #include <QAbstractTableModel>
 #include <QList>
-#include <QPair>
 
 //! [0]
+
+struct Contact
+{
+    QString name;
+    QString address;
+
+    bool operator==(const Contact &other) const
+    {
+        return name == other.name && address == other.address;
+    }
+};
+
+inline QDataStream &operator<<(QDataStream &stream, const Contact &contact)
+{
+    return stream << contact.name << contact.address;
+}
+
+inline QDataStream &operator>>(QDataStream &stream, Contact &contact)
+{
+    return stream >> contact.name >> contact.address;
+}
+
 class TableModel : public QAbstractTableModel
 {
     Q_OBJECT
 
 public:
     TableModel(QObject *parent = 0);
-    TableModel(QList<QPair<QString, QString> > listofPairs, QObject *parent = 0);
+    TableModel(QList<Contact> contacts, QObject *parent = 0);
 
     int rowCount(const QModelIndex &parent) const override;
     int columnCount(const QModelIndex &parent) const override;
@@ -72,10 +93,10 @@ public:
     bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole) override;
     bool insertRows(int position, int rows, const QModelIndex &index = QModelIndex()) override;
     bool removeRows(int position, int rows, const QModelIndex &index = QModelIndex()) override;
-    QList<QPair<QString, QString> > getList();
+    QList<Contact> getContacts() const;
 
 private:
-    QList<QPair<QString, QString> > listOfPairs;
+    QList<Contact> contacts;
 };
 //! [0]