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#ifndef GUARD_USERMSGMAN_H_INCLUDE
#define GUARD_USERMSGMAN_H_INCLUDE

#include <usermsg/usermsg-config.h>
#include <usermsg/usermsg.h>

#include <QObject>
#include <QAtomicInt>
#include <QFile>

class UserMsgStg;
class UserMsg;
class LogMsg;

class QTextStream;

class USERMSG_EXPORT UserMsgMan : public QObject {
    Q_OBJECT

    friend class LogMsg;

public:

    typedef void (*KbShowMessage) (const UserMsg & um);

private:

    bool
    enabled_; 
    UserMsgStg *
    settings_; 
    QVector<UserMsg>
    message_list_; 
    QAtomicInt
    lock_; 
    KbShowMessage
    kb_show_; 
    QFile *
    log_file_; 
    QTextStream *
    logger_; 
    static UserMsgMan *
    singleton_; 
private:

    UserMsgMan ();

    virtual ~UserMsgMan();

public:

    static UserMsgMan *
    singleton ();

    static bool
    init (
            bool start_disabled = false);

    static void
    end ();

    static bool
    isInitialized();


    static const UserMsgStg &
    settings ();

    static void
    setSettings (
            const UserMsgStg & value);


    static KbShowMessage
    callbackShow ();

    static void
    setCallbackShow (
            KbShowMessage value);


    static const QString &
    logFile ();

    static void
    setLogFile (
            const QString & value);

    static void
    autosetLogFile (
            const QString & base_name);


    static void
    disable ();

    static void
    enable (
            bool collapse_messages = false);

    static bool
    isEnabled();


    static bool
    isVisible (
            UserMsgEntry::Type value);

    static void
    setVisible (
            UserMsgEntry::Type ty,
            bool b_visible);

    static void
    setAllVisible (
            bool include_debug);

    static void
    show (
            const UserMsg & um);

protected:

    static void
    autostart ();


    void
    _addMessageToQueue (
            const UserMsg & um);

    void
    _showMessage (
            const UserMsg & um);

    void
    _showQueue (
            bool collapse_messages);

    void
    _openLogFile ();

    void
    _logMessage (
            const UserMsg & um);

signals:

    void
    signalShow(
             UserMsg um);


}; // class UserMsgMan

#endif // GUARD_USERMSGMAN_H_INCLUDE