////  WebBrowserSuggestionsEngine.cpp//  interface/src/webbrowser////  Created by Vlad Stelmahovsky on 30/10/17.//  Copyright 2017 High Fidelity, Inc.////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html// #include "WebBrowserSuggestionsEngine.h"#include "qregexp.h" #include <qbuffer.h>#include <qcoreapplication.h>#include <qlocale.h>#include <qnetworkrequest.h>#include <qnetworkreply.h>#include <qregexp.h>#include <qstringlist.h> #include <QUrlQuery>#include <QJsonDocument> #include <NetworkAccessManager.h> static const QString GoogleSuggestionsUrl = "https://suggestqueries.google.com/complete/search?output=firefox&q=%1";static const int SUGGESTIONS_LIST_INDEX = 1; WebBrowserSuggestionsEngine::WebBrowserSuggestionsEngine(QObject* parent)    : QObject(parent)    , _suggestionsReply(0) {    _currentNAM = &NetworkAccessManager::getInstance();    connect(_currentNAM, &QNetworkAccessManager::finished, this, &WebBrowserSuggestionsEngine::suggestionsFinished);}  WebBrowserSuggestionsEngine::~WebBrowserSuggestionsEngine() {    disconnect(_currentNAM, &QNetworkAccessManager::finished, this, &WebBrowserSuggestionsEngine::suggestionsFinished);} void WebBrowserSuggestionsEngine::querySuggestions(const QString &searchString) {    if (_suggestionsReply) {        _suggestionsReply->disconnect(this);        _suggestionsReply->abort();        _suggestionsReply->deleteLater();        _suggestionsReply = 0;    }    QString url = QString(GoogleSuggestionsUrl).arg(searchString);    _suggestionsReply = _currentNAM->get(QNetworkRequest(url));} void WebBrowserSuggestionsEngine::suggestionsFinished(QNetworkReply *reply) {     if (reply != _suggestionsReply) {        return; //invalid reply. ignore    }     const QByteArray response = _suggestionsReply->readAll();     _suggestionsReply->close();    _suggestionsReply->deleteLater();    _suggestionsReply = 0;     QJsonParseError err;    QJsonDocument json = QJsonDocument::fromJson(response, &err);    const QVariant res = json.toVariant();     if (err.error != QJsonParseError::NoError || res.type() != QVariant::List) {        return;    }     const QVariantList list = res.toList();     if (list.size() <= SUGGESTIONS_LIST_INDEX) {        return;    }     QStringList out;    const QVariantList& suggList = list.at(SUGGESTIONS_LIST_INDEX).toList();     foreach (const QVariant &v, suggList) {        out.append(v.toString());    }     emit suggestions(out);}