1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
#ifndef TALKGROUPDATABASE_HH
#define TALKGROUPDATABASE_HH
#include <QAbstractTableModel>
#include <QNetworkAccessManager>
/** Downloads, periodically updates and provides a list of talk group IDs and their names.
*
* @ingroup utils */
class TalkGroupDatabase : public QAbstractTableModel
{
Q_OBJECT
/** A talk group entry in the database. */
class TalkGroup {
public:
/** Empty constructor. */
TalkGroup();
/** Constructor form name and DMR ID. */
TalkGroup(const QString &name, unsigned number);
/** The DMR ID of the talk group. */
unsigned id;
/** The Name of the talk group. */
QString name;
};
public:
/** Constructs a talk group database.
* @param updatePeriodDays Specifies the update period of the DB in days.
* @param parent Specifies the QObject parent. */
TalkGroupDatabase(unsigned updatePeriodDays=30, QObject *parent=nullptr);
/** Returns the number of talk groups. */
qint64 count() const;
/** Returns the age of the database in days. */
unsigned dbAge() const;
/** Returns the talk group entry at the given index. */
TalkGroup talkgroup(int index) const;
/** Loads all entries from the downloaded talk group db. */
bool load();
/** Loads all entries from the talk group db at the specified location. */
bool load(const QString &filename);
/** Implements the QAbstractTableModel interface, returns the number of rows (number of entries). */
int rowCount(const QModelIndex &parent=QModelIndex()) const;
/** Implements the QAbstractTableModel interface, returns the number of columns. */
int columnCount(const QModelIndex &parent=QModelIndex()) const;
/** Implements the QAbstractTableModel interface, return the entry data. */
QVariant data(const QModelIndex &index, int role=Qt::DisplayRole) const;
signals:
/** Gets emitted once the talk group database has been loaded. */
void loaded();
/** Gets emitted if the loading of the talk group database fails. */
void error(const QString &msg);
public slots:
/** Starts the download of the talk group database. */
void download();
private slots:
/** Gets called whenever the download is complete. */
void downloadFinished(QNetworkReply *reply);
protected:
/** Holds all talk groups as id->name table. */
QVector<TalkGroup> _talkgroups;
/** The network access used for downloading. */
QNetworkAccessManager _network;
};
#endif // TALKGROUPDATABASE_HH
|
