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qmlcontactmodel.cpp Example File
qmlcontacts/qmlcontactmodel.cpp

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    #include <qcontactdetails.h>

    #include "qmlcontactmodel.h"
    #include "qcontactmanager.h"
    #include "qcontactdetailfilter.h"
    #include "qversitreader.h"
    #include "qversitcontactimporter.h"

    #include <QColor>
    #include <QHash>
    #include <QDebug>
    #include <QPixmap>
    #include <QFile>

    QMLContactModel::QMLContactModel(QObject *parent) :
        QAbstractListModel(parent),
        m_manager(0)
    {
        QHash<int, QByteArray> roleNames;
        roleNames = QAbstractItemModel::roleNames();
        roleNames.insert(InterestLabelRole, "interestLabel");
        roleNames.insert(InterestRole, "interest");
        roleNames.insert(AvatarRole, "avatar");
        roleNames.insert(PresenceAvailableRole, "presenceSupported");
        roleNames.insert(PresenceTextRole, "presenceText");
        roleNames.insert(PresenceStateRole, "presenceState");
        roleNames.insert(PresenceMessageRole, "presenceMessage");
        setRoleNames(roleNames);

        m_fetchHint.setOptimizationHints(QContactFetchHint::NoActionPreferences | QContactFetchHint::NoRelationships);
        m_fetchHint.setDetailDefinitionsHint(QStringList()
                                             << QContactPhoneNumber::DefinitionName
                                             << QContactEmailAddress::DefinitionName
                                             << QContactThumbnail::DefinitionName
                                             << QContactAvatar::DefinitionName
                                             << QContactGlobalPresence::DefinitionName
                                             << QContactDisplayLabel::DefinitionName
                                             << QContactOnlineAccount::DefinitionName);
        m_sortOrder.setDetailDefinitionName(QContactDisplayLabel::DefinitionName, QContactDisplayLabel::FieldLabel);
        m_sortOrder.setCaseSensitivity(Qt::CaseSensitive);

        connect(&m_contactsRequest, SIGNAL(resultsAvailable()), this, SLOT(resultsReceived()));
        m_contactsRequest.setFetchHint(m_fetchHint);
        m_contactsRequest.setSorting(m_sortOrder);

        QContactDetailFilter d;
        d.setDetailDefinitionName(QContactType::DefinitionName, QContactType::FieldType);
        d.setValue(QContactType::TypeContact);

        m_contactsRequest.setFilter(d);

        setManager(QString());
    }

    QStringList QMLContactModel::availableManagers() const
    {
        return QContactManager::availableManagers();
    }

    QString QMLContactModel::manager()
    {
        return m_manager->managerName();
    }

    void QMLContactModel::fillContactsIntoMemoryEngine(QContactManager* manager)
    {
        QVersitReader reader;
        QFile file(":/contents/example.vcf");
        bool ok = file.open(QIODevice::ReadOnly);
        if (ok) {
           reader.setDevice(&file);
           if (reader.startReading() && reader.waitForFinished()) {
               QVersitContactImporter importer;
               importer.importDocuments(reader.results());
               QList<QContact> contacts = importer.contacts();
               manager->saveContacts(&contacts, 0);
           }
        }
    }

    int QMLContactModel::rowCount(const QModelIndex &parent) const
    {
        Q_UNUSED(parent);
        return m_contacts.count();
    }

    void QMLContactModel::setManager(const QString& managerName)
    {
        delete m_manager;
        m_manager = new QContactManager(managerName);

        if (managerName == "memory" && m_manager->contactIds().isEmpty()) {
            fillContactsIntoMemoryEngine(m_manager);
        }

        qWarning() << "Changed backend to: " << managerName;
        m_contactsRequest.setManager(m_manager);
        connect(m_manager, SIGNAL(dataChanged()), this, SLOT(fetchAgain()));
        fetchAgain();
    }

    void QMLContactModel::resultsReceived()
    {
        int oldCount = m_contacts.count();
        int newCount = m_contactsRequest.contacts().count();
        if (newCount > oldCount) {
            // Assuming the order is the same
            beginInsertRows(QModelIndex(), newCount - oldCount, newCount);
            m_contacts = m_contactsRequest.contacts();
            endInsertRows();
        } else {
            // Hmm, shouldn't happen
            reset();
            beginInsertRows(QModelIndex(), 0, m_contactsRequest.contacts().count());
            m_contacts =  m_contactsRequest.contacts();
            endInsertRows();
        }
    }

    void QMLContactModel::fetchAgain()
    {
        m_contacts.clear();
        reset();
        m_contactsRequest.start();
    }

    QPair<QString, QString> QMLContactModel::interestingDetail(const QContact&c) const
    {
        // Try a phone number, then email, then online account
        // This does only check the first detail of each type
        QContactDetail p = c.details<QContactPhoneNumber>().value(0);
        if (!p.isEmpty())
            return qMakePair(tr("Phone"), p.value(QContactPhoneNumber::FieldNumber));

        p = c.details<QContactEmailAddress>().value(0);
        if (!p.isEmpty())
            return qMakePair(tr("Email"), p.value(QContactEmailAddress::FieldEmailAddress));

        p = c.details<QContactOnlineAccount>().value(0);
        if (!p.isEmpty())
            return qMakePair(p.value(QContactOnlineAccount::FieldServiceProvider), p.value(QContactOnlineAccount::FieldAccountUri));

        // Well, don't know.
        return qMakePair(QString(), QString());
    }

    QVariant QMLContactModel::data(const QModelIndex &index, int role) const
    {
        QContact c = m_contacts.value(index.row());
        switch(role) {
            case Qt::DisplayRole:
                return c.displayLabel();
            case InterestLabelRole:
                return interestingDetail(c).first;
            case InterestRole:
                return interestingDetail(c).second;
            case AvatarRole:
                if (c.detail<QContactThumbnail>().isEmpty()) {
                    QContactAvatar a = c.detail<QContactAvatar>();
                    if (!a.imageUrl().isEmpty())
                        return a.imageUrl();
                    else
                        return QString("qrc:/default.svg");
                } else {
                    // We have a thumbnail, so return empty
                    return QString("");
                }
            case Qt::DecorationRole:
                {
                    QContactThumbnail t = c.detail<QContactThumbnail>();
                    if (!t.thumbnail().isNull())
                        return QPixmap::fromImage(t.thumbnail());
                }
                return QPixmap();
            case PresenceAvailableRole:
                return !c.detail<QContactGlobalPresence>().isEmpty();
            case PresenceMessageRole:
                return c.detail<QContactGlobalPresence>().customMessage();
            case PresenceTextRole:
                return c.detail<QContactGlobalPresence>().presenceStateText();
            case PresenceStateRole:
                return c.detail<QContactGlobalPresence>().presenceState();
        }
        return QVariant();
    }


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Qt Mobility Project 1.0.1