addressbookmodel.cpp Example File | Enginio C++ Classes and Examples 1.2

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- addressbookmodel.cpp Example File
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# addressbookmodel.cpp Example File

cloudaddressbook/addressbookmodel.cpp

    /****************************************************************************
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    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the examples of the Qt Toolkit.
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    #include <QtCore/qhash.h>
    #include <QtCore/qbytearray.h>
    #include <QtCore/qjsondocument.h>
    #include <QtCore/qjsonvalue.h>
    #include <QtCore/qjsonobject.h>
    #include <QtCore/qjsonarray.h>

    #include <QtGui/qfont.h>

    #include "addressbookmodel.h"

    AddressBookModel::AddressBookModel(QObject *parent)
        : EnginioModel(parent)
        , _searchReply()
    {}

    AddressBookModel::~AddressBookModel()
    {}

    QVariant AddressBookModel::data(const QModelIndex &index, int role) const
    {
        if (role == Qt::DisplayRole) {
            // we assume here that column order is constant and it is the same as in AddressBookModel::Roles
            return EnginioModel::data(index, FirstNameRole + index.column()).value<QJsonValue>().toString();
        }
        if (role == Qt::FontRole) {
            // this role is used to mark items found in the full text search.
            QFont font;
            QString id = EnginioModel::data(index, Enginio::IdRole).value<QString>();
            font.setBold(_markedItems.contains(id));
            return font;
        }

        return EnginioModel::data(index, role);
    }

    bool AddressBookModel::setData(const QModelIndex &index, const QVariant &value, int role)
    {
        bool result = role == Qt::EditRole
                ? EnginioModel::setData(this->index(index.row()), value, FirstNameRole + index.column())
                : EnginioModel::setData(this->index(index.row()), value, role);

        // if the data was edited, the marked items set may not be valid anymore
        // so we need to clear it.
        if (result)
            _markedItems.clear();
        return result;
    }

    int AddressBookModel::columnCount(const QModelIndex &parent) const
    {
        return parent.isValid() ? 0 : 5;
    }

    QVariant AddressBookModel::headerData(int section, Qt::Orientation orientation, int role) const
    {
        if (orientation == Qt::Horizontal && role == Qt::DisplayRole) {
            switch (section) {
            case 0: return QStringLiteral("First name");
            case 1: return QStringLiteral("Last name");
            case 2: return QStringLiteral("Email");
            case 3: return QStringLiteral("Phone number");
            case 4: return QStringLiteral("Address");
            }
            return QVariant();
        }
        return EnginioModel::headerData(section, orientation, role);
    }

    QHash<int, QByteArray> AddressBookModel::roleNames() const
    {
        QHash<int, QByteArray> roles = EnginioModel::roleNames();
        roles.insert(FirstNameRole, "firstName");
        roles.insert(LastNameRole, "lastName");
        roles.insert(EmailRole, "email");
        roles.insert(PhoneRole, "phone");
        roles.insert(AddressRole, "address");
        return roles;
    }

    void AddressBookModel::newSearch(const QString &search)
    {
        if (search.isEmpty())
            return;

        // construct JSON object:
        //    {
        //        "objectTypes": ["objects.addressbook"],
        //        "search": { "phrase": "*PHRASE*",
        //            "properties": ["firstName", "lastName", "email", "phone", "address"]
        //        }
        //    }

        QJsonObject query;
        {
            QJsonArray objectTypes;
            objectTypes.append(QString::fromUtf8("objects.addressbook"));

            QJsonArray properties;
            properties.append(QString::fromUtf8("firstName"));
            properties.append(QString::fromUtf8("lastName"));
            properties.append(QString::fromUtf8("email"));
            properties.append(QString::fromUtf8("phone"));
            properties.append(QString::fromUtf8("address"));

            QJsonObject searchQuery;
            searchQuery.insert("phrase", "*" + search + "*");
            searchQuery.insert("properties", properties);

            query.insert("objectTypes", objectTypes);
            query.insert("search", searchQuery);
        }

        if (_searchReply) {
            // a new search is created before the old one was finished
            // we will not be interested in the results of the old search.
            _searchReply->disconnect(this);
        }

        _searchReply =  client()->fullTextSearch(query);
        QObject::connect(_searchReply, &EnginioReply::finished, this, &AddressBookModel::searchResultsArrived);
        QObject::connect(_searchReply, &EnginioReply::finished, _searchReply, &EnginioReply::deleteLater);
    }

    void AddressBookModel::searchResultsArrived()
    {
        // clear old marks.
        _markedItems.clear();

        // update marked ids.
        QJsonArray results = _searchReply->data()["results"].toArray();
        foreach (const QJsonValue &value, results) {
            QJsonObject person = value.toObject();
            _markedItems.insert(person["id"].toString());
        }

        QVector<int> roles;
        roles.append(Qt::FontRole);
        // We do not keep id -> row mapping, therefore it is easier to emit
        // data change signal for all items, even if it is not optimal from
        // the performance point of view.
        emit dataChanged(index(0), index(rowCount() - 1, columnCount() - 1) , roles);

        _searchReply = 0;
        emit searchFinished();
    }