googlesuggest.cpp Example File

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    #include <QtNetwork/QNetworkRequest>

    #include "googlesuggest.hpp"

    using namespace bb::cascades;

    const char *GSUGGEST_URL = "http://google.com/complete/search?output=toolbar&q=%1";

    GoogleSuggest::GoogleSuggest()
    {
        // We use a timer that goes off after 500ms to trigger
        // actually retrieving the suggestions
        m_timer.setSingleShot(true);
        m_timer.setInterval(500);

        connect(&m_timer, SIGNAL(timeout()), this, SLOT(autoSuggest()));

        // Hook this signal so we get our network requests
        connect(&m_networkManager, SIGNAL(finished(QNetworkReply*)),
                this, SLOT(handleNetworkData(QNetworkReply*)));
    }

    QString GoogleSuggest::input() const
    {
        return m_input;
    }

    void GoogleSuggest::setInput(const QString &input)
    {
        if (input == m_input)
            return;

        // We need to save this to access later once we want
        // to retrieve the suggestions
        m_input = input;
        m_timer.start();
    }

    bb::cascades::DataModel* GoogleSuggest::model() const
    {
        return &m_model;
    }

    void GoogleSuggest::showCompletions(const QStringList &choices, const QStringList &hits)
    {
        emit clearSelection();

        m_model.clear();

        if (choices.isEmpty() || (choices.count() != hits.count()))
            return;

        for (int i = 0; i < choices.count(); ++i) {
            QVariantMap item;

            item["suggestion"] = QString(choices[i]);
            item["hits"] = QString(hits[i]);
            m_model.append(item);
        }
    }

    void GoogleSuggest::autoSuggest()
    {
        if (m_input.isEmpty()) {
            m_model.clear();
            return;
        }

        const QString url = QString::fromLatin1(GSUGGEST_URL).arg(m_input);

        m_networkManager.get(QNetworkRequest(url));
    }

    void GoogleSuggest::handleNetworkData(QNetworkReply *networkReply)
    {
        if (!networkReply->error()) {
            QStringList choices;
            QStringList hits;

            const QByteArray response(networkReply->readAll());
            QXmlStreamReader xml(response);
            while (!xml.atEnd()) {
                xml.readNext();
                if (xml.tokenType() == QXmlStreamReader::StartElement) {
                    if (xml.name() == "suggestion") {
                        choices << xml.attributes().value("data").toString();
                    } else if (xml.name() == "num_queries") {
                        hits << xml.attributes().value("int").toString();
                    }
                }
            }

            showCompletions(choices, hits);
        }

        networkReply->deleteLater();
    }