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#ifndef TOPICMODEL_H
#define TOPICMODEL_H
#include <QtCore/QAbstractListModel>
#include <QtCore/QDateTime>
#include <QtCore/QUrl>
#include <QtSql/QSqlQuery>
class Board;
class TopicModel : public QAbstractListModel
{
Q_OBJECT
Q_PROPERTY(Board * board READ board WRITE setBoard NOTIFY boardChanged)
Q_PROPERTY(int topicId READ topicId WRITE setTopicId NOTIFY topicIdChanged)
Q_PROPERTY(int firstUnreadPost READ firstUnreadPost NOTIFY firstUnreadPostChanged)
public:
TopicModel(QObject *parent = 0);
enum DataRoles {
TitleRole = Qt::DisplayRole,
IconRole = Qt::DecorationRole,
ContentRole = Qt::ToolTipRole,
PostIdRole = Qt::UserRole,
UserIdRole,
UserNameRole,
DateTimeRole,
HumanDateRole,
HumanTimeRole,
UnreadRole
};
Board * board() const;
void setBoard(Board * board);
int topicId() const;
void setTopicId(const int id);
int firstUnreadPost() const;
int rowCount(const QModelIndex &parent = QModelIndex()) const;
QVariant data(const QModelIndex &index, int role) const;
bool canFetchMore(const QModelIndex &parent = QModelIndex()) const;
void fetchMore(const QModelIndex &parent = QModelIndex());
public slots:
void refresh();
void markAsRead();
signals:
void boardChanged();
void topicIdChanged();
void firstUnreadPostChanged();
protected:
struct Post {
/** Set 'post_id' to -1 for "not yet fetched" */
int post_id;
QString title;
QString content;
QUrl icon;
int user_id;
QString user_name;
QDateTime time;
QDateTime last_update_time;
};
private:
static QDateTime parseDbDateTime(const QVariant& v);
static QDateTime oldestPostUpdate(const QList<Post>& posts);
QDateTime lastTopPostUpdate();
QList<Post> loadPosts(int start, int end);
void fetchPost(int position) const; // const because data() calls this
void enlargeModel(int end);
void clearModel();
private slots:
void handleTopicPostsChanged(int topicId, int start, int end);
void handleTopicPostsUnread(int topicId, int position);
void update();
void reload();
private:
Board *_board;
int _topicId;
QList<Post> _data;
bool _eof;
int _firstUnread;
};
#endif // TOPICMODEL_H
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