108 lines
3.0 KiB
C++
Executable File
108 lines
3.0 KiB
C++
Executable File
// This file is part of RSS Guard.
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//
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// Copyright (C) 2011-2016 by Martin Rotter <rotter.martinos@gmail.com>
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//
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// RSS Guard 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 3 of the License, or
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// (at your option) any later version.
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//
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// RSS Guard 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
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// GNU 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 RSS Guard. If not, see <http://www.gnu.org/licenses/>.
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#ifndef FEEDDOWNLOADER_H
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#define FEEDDOWNLOADER_H
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#include <QObject>
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#include <QPair>
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#include "core/message.h"
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class Feed;
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// Represents results of batch feed updates.
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class FeedDownloadResults {
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public:
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explicit FeedDownloadResults();
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QList<QPair<QString,int> > updatedFeeds() const;
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QString overview(int how_many_feeds) const;
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void appendUpdatedFeed(const QPair<QString,int> &feed);
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void sort();
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static bool lessThan(const QPair<QString,int> &lhs, const QPair<QString,int> &rhs);
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inline void clear() {
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m_updatedFeeds.clear();
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}
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private:
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// QString represents title if the feed, int represents count of newly downloaded messages.
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QList<QPair<QString,int> > m_updatedFeeds;
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};
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class QMutex;
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// This class offers means to "update" feeds and "special" categories.
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// NOTE: This class is used within separate thread.
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class FeedDownloader : public QObject {
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Q_OBJECT
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public:
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// Constructors and destructors.
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explicit FeedDownloader(QObject *parent = 0);
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virtual ~FeedDownloader();
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bool isUpdateRunning() const;
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public slots:
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// Performs update of all feeds from the "feeds" parameter.
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// New messages are downloaded for each feed and they
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// are stored persistently in the database.
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// Appropriate signals are emitted.
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void updateFeeds(const QList<Feed*> &feeds);
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// Stops running update.
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void stopRunningUpdate();
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private slots:
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void oneFeedUpdateFinished(const QList<Message> &messages);
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signals:
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// Emitted if feed updates started.
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void started();
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// Emitted if all items from update queue are
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// processed.
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void finished(FeedDownloadResults updated_feeds);
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// Emitted if any item is processed.
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// "Current" number indicates count of processed feeds
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// and "total" number indicates total number of feeds
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// which were in the initial queue.
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void progress(const Feed *feed, int current, int total);
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private:
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void finalizeUpdate();
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FeedDownloadResults m_results;
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QMutex *m_msgUpdateMutex;
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int m_feedsUpdated;
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int m_feedsToUpdate;
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int m_feedsUpdating;
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int m_feedsTotalCount;
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bool m_stopUpdate;
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};
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#endif // FEEDDOWNLOADER_H
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