280 lines
8.3 KiB
C++
280 lines
8.3 KiB
C++
/*
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* Cantata
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*
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* Copyright (c) 2011-2013 Craig Drummond <craig.p.drummond@gmail.com>
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*
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* ----
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "wikipediasettings.h"
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#include "wikipediaengine.h"
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#include "networkaccessmanager.h"
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#include "localize.h"
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#include "icon.h"
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#include "spinner.h"
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#include "settings.h"
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#include "qtiocompressor/qtiocompressor.h"
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#include "utils.h"
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#include <QNetworkReply>
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#if QT_VERSION >= 0x050000
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#include <QUrlQuery>
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#endif
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#include <QXmlStreamReader>
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#include <QFile>
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static QString localeFile() {
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return Utils::configDir(QString(), true)+"wikipedia-langs.xml.gz";
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}
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WikipediaSettings::WikipediaSettings(QWidget *p)
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: QWidget(p)
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, loaded(false)
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, job(0)
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, spinner(0)
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{
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setupUi(this);
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connect(upButton, SIGNAL(clicked()), SLOT(moveUp()));
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connect(downButton, SIGNAL(clicked()), SLOT(moveDown()));
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connect(reload, SIGNAL(clicked()), SLOT(getLangs()));
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connect(addButton, SIGNAL(clicked()), SLOT(add()));
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connect(removeButton, SIGNAL(clicked()), SLOT(remove()));
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connect(langs, SIGNAL(currentItemChanged(QListWidgetItem*,QListWidgetItem*)), SLOT(currentLangChanged(QListWidgetItem*)));
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connect(preferredLangs, SIGNAL(currentItemChanged(QListWidgetItem*,QListWidgetItem*)), SLOT(currentPreferredLangChanged(QListWidgetItem*)));
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upButton->setIcon(Icon("go-up"));
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downButton->setIcon(Icon("go-down"));
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addButton->setIcon(Icon("list-add"));
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removeButton->setIcon(Icon("list-remove"));
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upButton->setEnabled(false);
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downButton->setEnabled(false);
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addButton->setEnabled(false);
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removeButton->setEnabled(false);
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}
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void WikipediaSettings::showEvent(QShowEvent *e)
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{
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if (!loaded) {
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loaded=true;
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QByteArray data;
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QString fileName=localeFile();
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if (QFile::exists(fileName)) {
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QFile f(fileName);
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QtIOCompressor compressor(&f);
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compressor.setStreamFormat(QtIOCompressor::GzipFormat);
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if (compressor.open(QIODevice::ReadOnly)) {
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data=compressor.readAll();
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}
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}
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if (data.isEmpty()) {
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getLangs();
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} else {
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parseLangs(data);
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}
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}
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QWidget::showEvent(e);
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}
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void WikipediaSettings::load()
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{
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}
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void WikipediaSettings::save()
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{
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if (!loaded) {
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return;
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}
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QStringList pref;
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for (int i=0; i<preferredLangs->count(); ++i) {
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pref.append(preferredLangs->item(i)->data(Qt::UserRole).toString());
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}
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if (pref.isEmpty()) {
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pref.append("en:en");
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}
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Settings::self()->saveWikipediaLangs(pref);
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WikipediaEngine::setPreferedLangs(pref);
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}
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void WikipediaSettings::cancel()
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{
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if (job) {
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disconnect(job, SIGNAL(finished()), this, SLOT(parseLangs()));
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job->deleteLater();
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job=0;
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}
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}
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void WikipediaSettings::getLangs()
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{
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if (!spinner) {
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spinner=new Spinner(langs);
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spinner->setWidget(langs);
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}
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spinner->start();
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langs->clear();
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preferredLangs->clear();
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reload->setEnabled(false);
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cancel();
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QUrl url("https://en.wikipedia.org/w/api.php");
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#if QT_VERSION < 0x050000
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QUrl &q=url;
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#else
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QUrlQuery q;
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#endif
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q.addQueryItem(QLatin1String("action"), QLatin1String("query"));
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q.addQueryItem(QLatin1String("meta"), QLatin1String("siteinfo"));
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q.addQueryItem(QLatin1String("siprop"), QLatin1String("interwikimap"));
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q.addQueryItem(QLatin1String("sifilteriw"), QLatin1String("local"));
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q.addQueryItem(QLatin1String("format"), QLatin1String("xml"));
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#if QT_VERSION >= 0x050000
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url.setQuery(q);
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#endif
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job=NetworkAccessManager::self()->get(url);
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connect(job, SIGNAL(finished()), this, SLOT(parseLangs()));
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}
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void WikipediaSettings::parseLangs()
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{
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QNetworkReply *reply = qobject_cast<QNetworkReply*>(sender());
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if (!reply) {
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return;
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}
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reply->deleteLater();
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if (reply!=job) {
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return;
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}
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job=0;
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parseLangs(reply->readAll());
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}
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void WikipediaSettings::parseLangs(const QByteArray &data)
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{
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QStringList preferred=WikipediaEngine::getPreferedLangs();
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QXmlStreamReader xml(data);
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QMap<int, QListWidgetItem *> prefMap;
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while (!xml.atEnd() && !xml.hasError()) {
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xml.readNext();
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if( xml.isStartElement() && QLatin1String("iw")==xml.name()) {
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const QXmlStreamAttributes &a = xml.attributes();
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if (a.hasAttribute(QLatin1String("prefix")) && a.hasAttribute(QLatin1String("language")) && a.hasAttribute(QLatin1String("url"))) {
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// The urlPrefix is the lang code infront of the wikipedia host
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// url. It is mostly the same as the "prefix" attribute but in
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// some weird cases they differ, so we can't just use "prefix".
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QString urlPrefix=QUrl(a.value(QLatin1String("url")).toString()).host().remove(QLatin1String(".wikipedia.org"));
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QString prefix=a.value(QLatin1String("prefix")).toString();
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QString entry=prefix+":"+urlPrefix;
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int index=preferred.indexOf(entry);
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QListWidgetItem *item = new QListWidgetItem(-1==index ? langs : preferredLangs);
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item->setText(QString("[%1] %2").arg(prefix).arg(a.value(QLatin1String("language")).toString()));
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item->setData(Qt::UserRole, entry);
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if (-1!=index) {
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prefMap[index]=item;
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}
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}
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}
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}
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QMap<int, QListWidgetItem *>::ConstIterator it(prefMap.constBegin());
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QMap<int, QListWidgetItem *>::ConstIterator end(prefMap.constEnd());
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for (; it!=end; ++it) {
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int row=preferredLangs->row(it.value());
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if (row!=it.key()) {
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preferredLangs->insertItem(it.key(), preferredLangs->takeItem(row));
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}
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}
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QFile f(localeFile());
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QtIOCompressor compressor(&f);
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compressor.setStreamFormat(QtIOCompressor::GzipFormat);
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if (compressor.open(QIODevice::WriteOnly)) {
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compressor.write(data);
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}
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reload->setEnabled(true);
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if (spinner) {
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spinner->stop();
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}
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}
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void WikipediaSettings::currentLangChanged(QListWidgetItem *item)
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{
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addButton->setEnabled(item);
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}
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void WikipediaSettings::currentPreferredLangChanged(QListWidgetItem *item)
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{
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if (!item) {
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upButton->setEnabled(false);
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downButton->setEnabled(false);
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removeButton->setEnabled(false);
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} else {
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const int row = langs->row(item);
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upButton->setEnabled(row != 0);
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downButton->setEnabled(row != langs->count() - 1);
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}
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removeButton->setEnabled(item);
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}
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void WikipediaSettings::moveUp()
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{
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move(-1);
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}
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void WikipediaSettings::moveDown()
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{
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move(+1);
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}
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void WikipediaSettings::add()
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{
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int index=langs->currentRow();
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if (index<0 || index>langs->count()) {
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return;
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}
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QListWidgetItem *item = langs->takeItem(index);
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QListWidgetItem *newItem=new QListWidgetItem(preferredLangs);
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newItem->setText(item->text());
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newItem->setData(Qt::UserRole, item->data(Qt::UserRole));
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delete item;
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}
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void WikipediaSettings::remove()
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{
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int index=preferredLangs->currentRow();
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if (index<0 || index>preferredLangs->count()) {
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return;
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}
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QListWidgetItem *item = preferredLangs->takeItem(index);
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QListWidgetItem *newItem=new QListWidgetItem(langs);
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newItem->setText(item->text());
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newItem->setData(Qt::UserRole, item->data(Qt::UserRole));
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delete item;
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}
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void WikipediaSettings::move(int d)
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{
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const int row = preferredLangs->currentRow();
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QListWidgetItem *item = preferredLangs->takeItem(row);
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preferredLangs->insertItem(row + d, item);
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preferredLangs->setCurrentRow(row + d);
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}
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