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messagemodel.cpp Example File
messageviewer/messagemodel.cpp

    /****************************************************************************
    **
    ** This file is part of the Qt Extended Opensource Package.
    **
    ** Copyright (C) 2009 Trolltech ASA.
    **
    ** $QT_EXTENDED_DUAL_LICENSE$
    **
    ****************************************************************************/

    #include "messagemodel.h"
    #include "messagedelegate.h"
    #include <QIcon>
    #include <QMailMessageId>
    #include <QMailMessageMetaData>
    #include <QMailMessageKey>
    #include <QMailMessageSortKey>
    #include <QMailStore>
    #include <QPhoneNumber>
    #include <QStandardItem>
    #include <QTimeString>
    #include <QtopiaApplication>

    class MessageItem : public QStandardItem
    {
    public:
        explicit MessageItem(const QMailMessageId& id);
        virtual ~MessageItem();

        QMailMessageId messageId() const;

    private:
        QMailMessageId id;
    };

    MessageItem::MessageItem(const QMailMessageId& id)
        : QStandardItem(), id(id)
    {
        static QIcon sentMessageIcon(":icon/qtmail/sendmail");
        static QIcon receivedMessageIcon(":icon/qtmail/getmail");
        static QIcon smsIcon(":icon/txt");
        static QIcon mmsIcon(":icon/multimedia");
        static QIcon emailIcon(":icon/email");
        static QIcon instantIcon(":icon/im");

        // Load the meta data for this message
        QMailMessageMetaData message(id);

        // Determine the properties we want to display
        QIcon* messageIcon = &smsIcon;
        if (message.messageType() == QMailMessage::Mms)
            messageIcon = &mmsIcon;
        if (message.messageType() == QMailMessage::Email)
            messageIcon = &emailIcon;
        if (message.messageType() == QMailMessage::Instant)
            messageIcon = &instantIcon;

        bool sent(message.status() & QMailMessage::Outgoing);

        QDateTime messageTime(message.date().toLocalTime());

        QString action(qApp->translate("MessageViewer", sent ? "Sent" : "Received"));
        QString date(QTimeString::localMD(messageTime.date()));
        QString time(QTimeString::localHM(messageTime.time(), QTimeString::Short));
        QString sublabel(QString("%1 %2 %3").arg(action).arg(date).arg(time));

        // Configure this item
        setIcon(sent ? sentMessageIcon : receivedMessageIcon);
        setText(message.subject());
        setData(sublabel, MessageDelegate::SubLabelRole);
        setData(*messageIcon, MessageDelegate::SecondaryDecorationRole);
    }

    MessageItem::~MessageItem()
    {
    }

    QMailMessageId MessageItem::messageId() const
    {
        return id;
    }

    MessageModel::MessageModel(QObject *parent)
        : QStandardItemModel(parent)
    {
    }

    MessageModel::~MessageModel()
    {
    }

    void MessageModel::setContact(const QContact& contact)
    {
        clear();

        if (contact.phoneNumbers().isEmpty() && contact.emailList().isEmpty()) {
            // Nothing to match for this contact
            return;
        }

        // Locate messages whose sender is this contact
        QMailMessageKey msgsFrom;

        // Locate messages whose recipients list contains this contact
        QMailMessageKey msgsTo;

        // Match on any of contact's phone numbers
        foreach(const QString& number, contact.phoneNumbers().values()) {
            msgsFrom |= QMailMessageKey(QMailMessageKey::Sender, number);
            msgsTo |= QMailMessageKey(QMailMessageKey::Recipients, number, QMailDataComparator::Includes);
        }

        // Match on any of contact's email addresses
        foreach(const QString& address, contact.emailList()) {
            msgsFrom |= QMailMessageKey(QMailMessageKey::Sender, address);
            msgsTo |= QMailMessageKey(QMailMessageKey::Recipients, address, QMailDataComparator::Includes);
        }

        // Sort messages by timestamp, newest to oldest
        QMailMessageSortKey sort(QMailMessageSortKey::TimeStamp, Qt::DescendingOrder);

        // Fetch the messages matching either of our queries, and return them sorted
        QMailMessageIdList matches(QMailStore::instance()->queryMessages(msgsFrom | msgsTo, sort));

        // Add each returned message to our data model
        foreach (const QMailMessageId& id, matches)
            appendRow(new MessageItem(id));
    }

    bool MessageModel::isEmpty() const
    {
        return (rowCount() == 0);
    }

    QMailMessageId MessageModel::messageId(const QModelIndex& index)
    {
        if (index.isValid())
            if (MessageItem* item = static_cast<MessageItem*>(itemFromIndex(index)))
                return item->messageId();

        return QMailMessageId();
    }