91 lines
2.3 KiB
C++
Executable file
91 lines
2.3 KiB
C++
Executable file
// For license of this file, see <object-root-folder>/LICENSE.md.
|
|
|
|
#ifndef FEEDDOWNLOADER_H
|
|
#define FEEDDOWNLOADER_H
|
|
|
|
#include <QObject>
|
|
|
|
#include <QPair>
|
|
|
|
#include "core/message.h"
|
|
|
|
class Feed;
|
|
class QThreadPool;
|
|
class QMutex;
|
|
|
|
// Represents results of batch feed updates.
|
|
class FeedDownloadResults {
|
|
public:
|
|
explicit FeedDownloadResults();
|
|
|
|
QList<QPair<QString, int>> updatedFeeds() const;
|
|
QString overview(int how_many_feeds) const;
|
|
|
|
void appendUpdatedFeed(const QPair<QString, int>& feed);
|
|
void sort();
|
|
void clear();
|
|
|
|
static bool lessThan(const QPair<QString, int>& lhs, const QPair<QString, int>& rhs);
|
|
|
|
private:
|
|
|
|
// QString represents title if the feed, int represents count of newly downloaded messages.
|
|
QList<QPair<QString, int>> m_updatedFeeds;
|
|
};
|
|
|
|
// This class offers means to "update" feeds and "special" categories.
|
|
// NOTE: This class is used within separate thread.
|
|
class FeedDownloader : public QObject {
|
|
Q_OBJECT
|
|
|
|
public:
|
|
|
|
// Constructors and destructors.
|
|
explicit FeedDownloader(QObject* parent = 0);
|
|
virtual ~FeedDownloader();
|
|
|
|
bool isUpdateRunning() const;
|
|
|
|
public slots:
|
|
|
|
// Performs update of all feeds from the "feeds" parameter.
|
|
// New messages are downloaded for each feed and they
|
|
// are stored persistently in the database.
|
|
// Appropriate signals are emitted.
|
|
void updateFeeds(const QList<Feed*>& feeds);
|
|
|
|
// Stops running update.
|
|
void stopRunningUpdate();
|
|
|
|
private slots:
|
|
void oneFeedUpdateFinished(const QList<Message>& messages, bool error_during_obtaining);
|
|
|
|
signals:
|
|
|
|
// Emitted if feed updates started.
|
|
void updateStarted();
|
|
|
|
// Emitted if all items from update queue are
|
|
// processed.
|
|
void updateFinished(FeedDownloadResults updated_feeds);
|
|
|
|
// Emitted if any item is processed.
|
|
// "Current" number indicates count of processed feeds
|
|
// and "total" number indicates total number of feeds
|
|
// which were in the initial queue.
|
|
void updateProgress(const Feed* feed, int current, int total);
|
|
|
|
private:
|
|
void updateAvailableFeeds();
|
|
void finalizeUpdate();
|
|
|
|
QList<Feed*> m_feeds;
|
|
QMutex* m_mutex;
|
|
QThreadPool* m_threadPool;
|
|
FeedDownloadResults m_results;
|
|
int m_feedsUpdated;
|
|
int m_feedsUpdating;
|
|
int m_feedsOriginalCount;
|
|
};
|
|
|
|
#endif // FEEDDOWNLOADER_H
|