redditmodel.cpp Example File

redditclient/redditmodel.cpp
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#include "redditmodel.h" #include <QtCore> #include <QtNetwork> RedditModel::RedditModel(QObject *parent) : QAbstractTableModel(parent) {} RedditModel::RedditModel(const QString &clientId, QObject *parent) : QAbstractTableModel(parent), redditWrapper(clientId) { grant(); } int RedditModel::rowCount(const QModelIndex &parent) const { Q_UNUSED(parent); return threads.size(); } int RedditModel::columnCount(const QModelIndex &parent) const { Q_UNUSED(parent); return threads.size() ? 1 : 0; } QVariant RedditModel::data(const QModelIndex &index, int role) const { Q_UNUSED(role); if (!index.isValid()) return QVariant(); if (role == Qt::DisplayRole) { const auto childrenObject = threads.at(index.row()); Q_ASSERT(childrenObject.value("data").isObject()); const auto dataObject = childrenObject.value("data").toObject(); return dataObject.value("title").toString(); } return QVariant(); } void RedditModel::grant() { redditWrapper.grant(); connect(&redditWrapper, &RedditWrapper::authenticated, this, &RedditModel::update); } void RedditModel::update() { auto reply = redditWrapper.requestHotThreads(); connect(reply, &QNetworkReply::finished, [=]() { reply->deleteLater(); if (reply->error() != QNetworkReply::NoError) { emit error(reply->errorString()); return; } const auto json = reply->readAll(); const auto document = QJsonDocument::fromJson(json); Q_ASSERT(document.isObject()); const auto rootObject = document.object(); Q_ASSERT(rootObject.value("kind").toString() == "Listing"); const auto dataValue = rootObject.value("data"); Q_ASSERT(dataValue.isObject()); const auto dataObject = dataValue.toObject(); const auto childrenValue = dataObject.value("children"); Q_ASSERT(childrenValue.isArray()); const auto childrenArray = childrenValue.toArray(); if (childrenArray.isEmpty()) return; beginInsertRows(QModelIndex(), threads.size(), childrenArray.size() + threads.size() - 1); for (const auto childValue : qAsConst(childrenArray)) { Q_ASSERT(childValue.isObject()); threads.append(childValue.toObject()); } endInsertRows(); }); }