Styles was added

viewmodels/usersviewmodel.cpp

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+#include "usersviewmodel.h"
+
+#include "services/beerservice.h"
+
+UsersViewModel::UsersViewModel(QObject *parent)
+    : QObject{parent}
+{
+    connect(this, &UsersViewModel::selectedUserChanged, this, [this]() {
+        BeerService::instance()->connectSrv(m_selectedUser);
+    });
+
+    setSelectedUser(m_settings.selectedUserId());
+
+    connect(&m_usersModel, &AbstractModel::dataChanged, this, &UsersViewModel::usersChanged);
+    connect(&m_usersModel, &AbstractModel::dataChanged, this, &UsersViewModel::selectedUserNameChanged);
+}
+
+QVariantList UsersViewModel::users() const
+{
+    return m_usersModel.users();
+}
+
+QString UsersViewModel::selectedUser() const
+{
+    return m_selectedUser;
+}
+
+void UsersViewModel::setSelectedUser(const QString &newSelectedUser)
+{
+    if (m_selectedUser == newSelectedUser) {
+        return;
+    }
+
+    m_selectedUser = newSelectedUser;
+    m_settings.setSelectedUserId(m_selectedUser);
+    emit selectedUserChanged();
+    emit selectedUserNameChanged();
+}
+
+QString UsersViewModel::selectedUserName() const
+{
+    return m_usersModel.userName(m_selectedUser);
+}

viewmodels/usersviewmodel.h

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+#ifndef USERSVIEWMODEL_H
+#define USERSVIEWMODEL_H
+
+#include <QObject>
+
+#include "models/usersmodel.h"
+
+class UsersViewModel : public QObject
+{
+    Q_OBJECT
+
+    Q_PROPERTY(QVariantList users READ users NOTIFY usersChanged)
+    Q_PROPERTY(QString selectedUser READ selectedUser WRITE setSelectedUser NOTIFY selectedUserChanged)
+    Q_PROPERTY(QString selectedUserName READ selectedUserName NOTIFY selectedUserNameChanged)
+
+public:
+    explicit UsersViewModel(QObject *parent = nullptr);
+
+    QVariantList users() const;
+    QString selectedUser() const;
+    void setSelectedUser(const QString &newSelectedUser);
+    QString selectedUserName() const;
+
+signals:
+    void usersChanged();
+    void selectedUserChanged();
+    void selectedUserNameChanged();
+
+private:
+    QString m_selectedUser;
+
+    UsersModel m_usersModel;
+    SettingsService m_settings;
+};
+
+#endif // USERSVIEWMODEL_H