From: Enar Väikene <enar@vaikene.net>
Date: Tue, 10 Sep 2013 11:49:04 +0000 (+0300)
Subject: The ScosTime application now more user friendly.
X-Git-Url: https://vaikene.ee/gitweb/gitweb.cgi?p=evaf;a=commitdiff_plain;h=125303c933569fe238a087e5f24128ff2cb30e0a

The ScosTime application now more user friendly.
---

diff --git a/src/apps/ScosTime/gui.cpp b/src/apps/ScosTime/gui.cpp
index 6efd962..ed7f098 100644
--- a/src/apps/ScosTime/gui.cpp
+++ b/src/apps/ScosTime/gui.cpp
@@ -41,9 +41,225 @@ using namespace eVaf::ScosTime;
 
 //-------------------------------------------------------------------
 
-Internal::DateTime::DateTime(QString const & s, QString const & epoch)
+Internal::DateTime::DateTime()
+    : mType(Invalid)
+    , mEpoch(QDateTime(QDate(1970, 1, 1), QTime(0, 0), Qt::UTC))
+    , mRxIso(new QRegExp("^\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}(:\\d{2}(\\.\\d{3})?)?$"))
+    , mRxAsd(new QRegExp("^\\d{4}\\.\\d{3}\\.\\d{2}\\.\\d{2}(\\.\\d{2}(\\.\\d{3})?)?$"))
+    , mRxCUC(new QRegExp("^[0-9a-f]{8}([0-9a-f]{4})?$", Qt::CaseInsensitive))
+{}
+
+Internal::DateTime::~DateTime()
 {
+    delete mRxCUC;
+    delete mRxAsd;
+    delete mRxIso;
+}
 
+Internal::DateTime::Type Internal::DateTime::setDateTime(QString const & s, QDateTime const & epoch)
+{
+    mEpoch = epoch;
+    return setDateTime(s);
+}
+
+Internal::DateTime::Type Internal::DateTime::setDateTime(QString const & s)
+{
+    // Detect the type of the date/time string
+    mType = getDateTimeType(s);
+    if (mType == Invalid)
+    {
+        return mType;
+    }
+
+    // Convert the string to a date/time value
+    mDateTime = strToDateTime(s, mType);
+    if (!mDateTime.isValid())
+    {
+        mType = Invalid;
+    }
+
+
+    return mType;
+}
+
+void Internal::DateTime::setEpoch(QDateTime const & epoch)
+{
+    if (!epoch.isValid())
+    {
+        return;
+    }
+
+    if (epoch != mEpoch)
+    {
+        if (mDateTime.isValid())
+        {
+            qint64 diff = mEpoch.msecsTo(epoch);
+            mDateTime = mDateTime.addMSecs(diff);
+        }
+        mEpoch = epoch;
+    }
+}
+
+Internal::DateTime::Type Internal::DateTime::getDateTimeType(QString const & s) const
+{
+    if (mRxIso->exactMatch(s))
+    {
+        return ISO;
+    }
+    else if (mRxAsd->exactMatch(s))
+    {
+        return ASD;
+    }
+    else if (mRxCUC->exactMatch(s))
+    {
+        return CUC;
+    }
+    return Invalid;
+}
+
+QDateTime Internal::DateTime::strToDateTime(QString const & s, Type type) const
+{
+    switch (type)
+    {
+        case ASD:
+        {
+            // Using the yyyy.ddd.hh.mm.ss[.zzz] format
+            QStringList tok = s.split(QChar('.'));
+            if (tok.size() < 4)
+            {
+                return QDateTime();
+            }
+
+            bool ok = false;
+            int year = tok.at(0).toInt(&ok);
+            if (!ok)
+            {
+                return QDateTime();
+            }
+            int days = tok.at(1).toInt(&ok);
+            if (!ok)
+            {
+                return QDateTime();
+            }
+            int hours = tok.at(2).toInt(&ok);
+            if (!ok)
+            {
+                return QDateTime();
+            }
+            int minutes = tok.at(3).toInt(&ok);
+            if (!ok)
+            {
+                return QDateTime();
+            }
+            int secs = 0;
+            int msecs = 0;
+            if (tok.size() > 4)
+            {
+                secs = tok.at(4).toInt(&ok);
+                if (!ok)
+                {
+                    return QDateTime();
+                }
+                if (tok.size() > 5)
+                {
+                    msecs = tok.at(5).toInt(&ok);
+                    if (!ok)
+                    {
+                        return QDateTime();
+                    }
+                }
+            }
+
+            QDate dt(year, 1, 1);
+            dt = dt.addDays(days - 1);
+
+            return QDateTime(dt, QTime(hours, minutes, secs, msecs), Qt::UTC);
+            break;
+        }
+        case ISO:
+        {
+            // Using the ISO format yyyy-MM-ddThh:mm:ss[.zzz]
+            QString tmp = s;
+            if (tmp.length() < 19)
+            {
+                tmp += ":00";
+            }
+            QDateTime dt = QDateTime::fromString(tmp, Qt::ISODate);
+            dt.setTimeSpec(Qt::UTC);
+            return dt;
+            break;
+        }
+        case CUC:
+        {
+            // Get the CUC coarse and fine values
+            bool ok = false;
+            int coarse = s.left(8).toLong(&ok, 16);
+            if (!ok)
+            {
+                return QDateTime();
+            }
+            int fine = 0;
+            if (s.size() == 12)
+            {
+                fine = s.mid(8, 4).toLong(&ok, 16);
+                if (!ok)
+                {
+                    return QDateTime();
+                }
+            }
+
+            // Get the date/time value
+            QDateTime tm = mEpoch.addSecs(coarse);
+            tm = tm.addMSecs(rint((double(fine) / 58.0 * 885.0) / 1000.0));
+            return tm;
+
+            break;
+        }
+        default:
+        {
+            return QDateTime();
+        }
+    }
+}
+
+QString Internal::DateTime::asISOstring() const
+{
+    if (mDateTime.isValid())
+    {
+        return mDateTime.toString("yyyy-MM-ddThh:mm:ss.zzz"); 
+    }
+    return QString();
+}
+
+QString Internal::DateTime::asASDstring() const
+{
+    if (mDateTime.isValid())
+    {
+        return QString("%1.%2.%3.%4.%5.%6")
+            .arg(mDateTime.date().year(), 4, 10, QChar('0'))
+            .arg(mDateTime.date().dayOfYear(), 3, 10, QChar('0'))
+            .arg(mDateTime.time().hour(), 2, 10, QChar('0'))
+            .arg(mDateTime.time().minute(), 2, 10, QChar('0'))
+            .arg(mDateTime.time().second(), 2, 10, QChar('0'))
+            .arg(mDateTime.time().msec(), 3, 10, QChar('0'));
+    }
+    return QString();
+}
+
+QString Internal::DateTime::asCUChexString() const
+{
+    if (!mDateTime.isValid())
+    {
+        return QString();
+    }
+
+    // Convert to CUC coarse and fine values
+    qint64 msecs = mEpoch.msecsTo(mDateTime);
+    quint32 coarse = quint32(msecs / 1000);
+    quint32 fine = quint32(rint(1000.0 * double(msecs % 1000) * 58.0 / 885.0));
+
+    // Set the CUC hex string
+    return QString("%1%2").arg(coarse, 8, 16, QChar('0')).arg(fine, 4, 16, QChar('0'));
 }
 
 
@@ -52,20 +268,15 @@ Internal::DateTime::DateTime(QString const & s, QString const & epoch)
 Module::Module()
     : Plugins::iPlugin()
     , mReady(false)
-    , mLastValidEntry(NoValidEntry)
+    , mLastDateTimeType(Internal::DateTime::Invalid)
 {
     setObjectName(QString("%1.%2").arg(VER_MODULE_NAME_STR).arg(__FUNCTION__));
 
-    rxIsoDateTime = new QRegExp("^\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}(:\\d{2}(.\\d{3})?)?$");
-    rxAsdDateTime = new QRegExp("^\\d{4}\\.\\d{3}\\.\\d{2}\\.\\d{2}(\\.\\d{2}(\\.\\d{3})?)?$");
-
     EVAF_INFO("%s created", qPrintable(objectName()));
 }
 
 Module::~Module()
 {
-    delete rxIsoDateTime;
-    delete rxAsdDateTime;
     EVAF_INFO("%s destroyed", qPrintable(objectName()));
 }
 
@@ -94,7 +305,10 @@ bool Module::init(QString const & args)
     wEpoch = new QComboBox;
     l->setBuddy(wEpoch);
     wEpoch->setEditable(true);
-    wEpoch->setValidator(new QRegExpValidator(*rxIsoDateTime, wEpoch));
+    {
+        QRegExp rx("^\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}:\\d{2}(\\.\\d{3})?$");
+        wEpoch->setValidator(new QRegExpValidator(rx, wEpoch));
+    }
     wEpoch->addItems(QStringList() << "1970-01-01T00:00:00.000" << "1999-08-22T00:00:00.000");
     connect(wEpoch, SIGNAL(editTextChanged(QString)), this, SLOT(epochChanged(QString)));
     g->addWidget(wEpoch, 0, 1);
@@ -106,8 +320,10 @@ bool Module::init(QString const & args)
 
     wDateTime = new QLineEdit;
     l->setBuddy(wDateTime);
-    QRegExp rxDateTime("^(\\d{4}\\.\\d{3}\\.\\d{2}\\.\\d{2}\\.\\d{2}(\\.\\d{3})?)|(\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}:\\d{2}(.\\d{3})?)$");
-    wDateTime->setValidator(new QRegExpValidator(rxDateTime, wDateTime));
+    {
+        QRegExp rx("^(\\d{4}\\.\\d{3}\\.\\d{2}\\.\\d{2}\\.\\d{2}(\\.\\d{3})?)|(\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}:\\d{2}(.\\d{3})?)$");
+        wDateTime->setValidator(new QRegExpValidator(rx, wDateTime));
+    }
     connect(wDateTime, SIGNAL(textEdited(QString)), this, SLOT(dateTimeEdited(QString)));
     g->addWidget(wDateTime, 1, 1);
 
@@ -124,7 +340,10 @@ bool Module::init(QString const & args)
     wCucHex = new QLineEdit;
     l->setBuddy(wCucHex);
     wCucHex->setMaxLength(12);
-    wCucHex->setInputMask(">HHHHHHHHhhhh");
+    {
+        QRegExp rx("^[0-9a-f]{8}([0-9a-f]{4})?$", Qt::CaseInsensitive);
+        wCucHex->setValidator(new QRegExpValidator(rx, wCucHex));
+    }
     connect(wCucHex, SIGNAL(textEdited(QString)), this, SLOT(cucHexEdited(QString)));
     g->addWidget(wCucHex, 2, 1);
 
@@ -153,125 +372,27 @@ void Module::done()
     EVAF_INFO("%s finalized", qPrintable(objectName()));
 }
 
-Module::DateTimeType Module::getDateTimeType(QString const & s) const
-{
-    if (rxIsoDateTime->exactMatch(s))
-        return IsoDateTime;
-    else if (rxAsdDateTime->exactMatch(s))
-        return AsdDateTime;
-    else
-        return InvalidDateTime;
-}
-
-QDateTime Module::strToDateTime(QString const & s, DateTimeType type) const
+void Module::dateTimeClicked()
 {
-    switch (type)
+    if (!mDateTime.isValid())
     {
-        case AsdDateTime:
-        {
-            // Using the yyyy.ddd.hh.mm.ss[.zzz] format
-            QStringList tok = s.split(QChar('.'));
-            if (tok.size() < 4)
-                return QDateTime();
-
-            bool ok = false;
-            int year = tok.at(0).toInt(&ok);
-            if (!ok)
-                return QDateTime();
-            int days = tok.at(1).toInt(&ok);
-            if (!ok)
-                return QDateTime();
-            int hours = tok.at(2).toInt(&ok);
-            if (!ok)
-                return QDateTime();
-            int minutes = tok.at(3).toInt(&ok);
-            if (!ok)
-                return QDateTime();
-            int secs = 0;
-            int msecs = 0;
-            if (tok.size() > 4) {
-                secs = tok.at(4).toInt(&ok);
-                if (!ok)
-                    return QDateTime();
-                if (tok.size() > 5) {
-                    msecs = tok.at(5).toInt(&ok);
-                    if (!ok)
-                        return QDateTime();
-                }
-            }
-
-            QDate dt(year, 1, 1);
-            dt = dt.addDays(days - 1);
-
-            return QDateTime(dt, QTime(hours, minutes, secs, msecs), Qt::UTC);
-            break;
-        }
-        case IsoDateTime:
-        {
-            // Using the ISO format yyyy-MM-ddThh:mm:ss[.zzz]
-            QDateTime dt = QDateTime::fromString(s, Qt::ISODate);
-            dt.setTimeSpec(Qt::UTC);
-            return dt;
-            break;
-        }
-        default:
-            return QDateTime();
+        return;
     }
-}
-
-QString Module::dateTimeToAsdStr(QDateTime const & tm) const
-{
-    return QString("%1.%2.%3.%4.%5.%6")
-            .arg(tm.date().year(), 4, 10, QChar('0'))
-            .arg(tm.date().dayOfYear(), 3, 10, QChar('0'))
-            .arg(tm.time().hour(), 2, 10, QChar('0'))
-            .arg(tm.time().minute(), 2, 10, QChar('0'))
-            .arg(tm.time().second(), 2, 10, QChar('0'))
-            .arg(tm.time().msec(), 3, 10, QChar('0'));
-}
-
-void Module::setDateTimeFromCucHex(QString const & s)
-{
-
-}
-
-void Module::setCucHexFromDateTime(QString const & s, DateTimeType type)
-{
-    // Get the epoch
-    QDateTime epoch = QDateTime::fromString(wEpoch->currentText(), Qt::ISODate);
-    epoch.setTimeSpec(Qt::UTC);
-
-    // Convert the date/time string to a QDateTime type
-    QDateTime tm = strToDateTime(s, type);
-
-    // Convert to CUC coarse and fine values
-    qint64 msecs = epoch.msecsTo(tm);
-    quint32 coarse = quint32(msecs / 1000);
-    quint32 fine = quint32(rint(1000.0 * double(msecs % 1000) * 58.0 / 885.0));
-
-    // Set the CUC hex string
-    wCucHex->setText(QString("%1%2").arg(coarse, 8, 16, QChar('0')).arg(fine, 4, 16, QChar('0')));
-}
-
-void Module::dateTimeClicked()
-{
-    // Get the date/time string, type and QDateTime value
-    QString s = wDateTime->text();
-    DateTimeType type = getDateTimeType(s);
-    QDateTime tm = strToDateTime(s, type);
 
     // Convert to another type
-    switch (type)
+    switch (mLastDateTimeType)
     {
-        case IsoDateTime:
+        case Internal::DateTime::ISO:
         {
-            wDateTime->setText(dateTimeToAsdStr(tm));
+            mLastDateTimeType = Internal::DateTime::ASD;
+            wDateTime->setText(mDateTime.asASDstring());
             wConvertDateTime->setText(tr("&to ISO", VER_MODULE_NAME_STR));
             break;
         }
-        case AsdDateTime:
+        case Internal::DateTime::ASD:
         {
-            wDateTime->setText(tm.toString("yyyy-MM-ddThh:mm:ss.zzz"));
+            mLastDateTimeType = Internal::DateTime::ISO;
+            wDateTime->setText(mDateTime.asISOstring());
             wConvertDateTime->setText(tr("&to ASD", VER_MODULE_NAME_STR));
             break;
         }
@@ -282,31 +403,34 @@ void Module::dateTimeClicked()
 
 void Module::dateTimeEdited(QString const & s)
 {
-    if (mLastValidEntry == DateTimeEntry)
-        mLastValidEntry = NoValidEntry;
     wConvertDateTime->setDisabled(true);
     wConvertDateTime->setText(QString());
+    mLastDateTimeType = Internal::DateTime::Invalid;
 
     if (s.isEmpty())
+    {
         return;
+    }
 
-    // Detect the type of the date/time string
-    DateTimeType type = getDateTimeType(s);
-    if (type == InvalidDateTime)
+    mDateTime.setDateTime(s);
+    if (!mDateTime.isValid())
+    {
         return;
+    }
 
-    // Set the date/time field as the last valid entry done by the user
-    mLastValidEntry = DateTimeEntry;
+    mLastDateTimeType = mDateTime.type();
 
     // Set the CUC hex string from this date/time string
-    setCucHexFromDateTime(s);
+    wCucHex->setText(mDateTime.asCUChexString());
 
     // Enable the button that converts between ISO and ASD date/time strings
-    if (type == IsoDateTime) {
+    if (mDateTime.type() == Internal::DateTime::ISO)
+    {
         wConvertDateTime->setEnabled(true);
         wConvertDateTime->setText(tr("&to ASD", VER_MODULE_NAME_STR));
     }
-    else if (type == AsdDateTime) {
+    else if (mDateTime.type() == Internal::DateTime::ISO)
+    {
         wConvertDateTime->setEnabled(true);
         wConvertDateTime->setText(tr("&to ISO", VER_MODULE_NAME_STR));
     }
@@ -314,56 +438,71 @@ void Module::dateTimeEdited(QString const & s)
 
 void Module::cucHexEdited(QString const & s)
 {
-    if (mLastValidEntry == CUCEntry)
-        mLastValidEntry = NoValidEntry;
     if (s.isEmpty() || s.size() < 8)
+    {
         return;
+    }
 
-    // Get the CUC coarse and fine values
-    bool ok = false;
-    int coarse = s.left(8).toLong(&ok, 16);
-    if (!ok)
-        return;
-    int fine = 0;
-    if (s.size() == 12)
-        fine = s.mid(8, 4).toLong(&ok, 16);
-    if (!ok)
+    mDateTime.setDateTime(s);
+    if (!mDateTime.isValid())
+    {
         return;
+    }
 
-    // Set the CUC field as the last valid entry done by the user
-    mLastValidEntry = CUCEntry;
-
-    // Get the epoch
-    QDateTime epoch = QDateTime::fromString(wEpoch->currentText(), Qt::ISODate);
-    epoch.setTimeSpec(Qt::UTC);
-
-    // Get the date/time value
-    QDateTime tm = epoch.addSecs(coarse);
-    tm = tm.addMSecs(rint((double(fine) / 58.0 * 885.0) / 1000.0));
-
-    // Set the date/time string in ASD format
-    wDateTime->setText(dateTimeToAsdStr(tm));
+    if (mLastDateTimeType == Internal::DateTime::Invalid)
+    {
+        mLastDateTimeType = Internal::DateTime::ASD;
+    }
 
-    // Enable conversion to ISO format
-    wConvertDateTime->setEnabled(true);
-    wConvertDateTime->setText(tr("&to ISO", VER_MODULE_NAME_STR));
+    // Set the date/time string in the last used format
+    if (mLastDateTimeType == Internal::DateTime::ASD)
+    {
+        wDateTime->setText(mDateTime.asASDstring());
+        wConvertDateTime->setEnabled(true);
+        wConvertDateTime->setText(tr("&to ISO", VER_MODULE_NAME_STR));
+    }
+    else if (mLastDateTimeType == Internal::DateTime::ISO)
+    {
+        wDateTime->setText(mDateTime.asISOstring());
+        wConvertDateTime->setEnabled(true);
+        wConvertDateTime->setText(tr("&to ASD", VER_MODULE_NAME_STR));
+    }
 }
 
 void Module::epochChanged(QString const & s)
 {
     if (s.isEmpty())
         return;
-    if (!rxIsoDateTime->exactMatch(s))
+    QRegExp rx("^\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}:\\d{2}(\\.\\d{3})?$");
+    if (!rx.exactMatch(s))
         return;
 
+    QDateTime dt = QDateTime::fromString(s, Qt::ISODate);
+    dt.setTimeSpec(Qt::UTC);
+    mDateTime.setEpoch(dt);
+
     // If there is a valid entry, do the conversion
-    switch (mLastValidEntry)
+    switch (mDateTime.type())
     {
-    case DateTimeEntry:
-        break;
-    case CUCEntry:
-        break;
-    default:
-        break;
+        case Internal::DateTime::ISO:
+        case Internal::DateTime::ASD:
+        {
+            wCucHex->setText(mDateTime.asCUChexString());
+            break;
+        }
+        case Internal::DateTime::CUC:
+        {
+            if (mLastDateTimeType == Internal::DateTime::ASD)
+            {
+                wDateTime->setText(mDateTime.asASDstring());
+            }
+            else if (mLastDateTimeType == Internal::DateTime::ISO)
+            {
+                wDateTime->setText(mDateTime.asISOstring());
+            }
+            break;
+        }
+        default:
+            break;
     }
 }
diff --git a/src/apps/ScosTime/gui.h b/src/apps/ScosTime/gui.h
index 90f33c2..1ce7972 100644
--- a/src/apps/ScosTime/gui.h
+++ b/src/apps/ScosTime/gui.h
@@ -43,15 +43,30 @@ class DateTime
 {
 public:
 
+    /// Type of the date/time entry
+    enum Type
+    {
+        Invalid,
+        ASD,
+        ISO,
+        CUC
+    };
+
     /**
-     * Creates an invalid date/time value
+     * Creates an invalid date/time value with the default epoch
      */
-    DateTime() {}
+    DateTime();
 
     /**
-     * Creates a date/time value from the string.
+     * Dtor
+     */
+    ~DateTime();
+
+    /**
+     * Sets the date/time value from a string.
      * @param s Input string
      * @param epoch Epoch
+     * @return Type of the input string
      *
      * The input string can be:
      * @li Date/time in ISO format yyyy-MM-ddThh:mm[:ss[.zzz]]
@@ -60,37 +75,93 @@ public:
      *
      * If the string is invalid, creates an invalid date/time value.
      */
-    DateTime(String const & s, String const & epoch);
+    Type setDateTime(QString const & s, QDateTime const & epoch);
+
+    /**
+     * Sets the date/time value from a string using the previously set epoch.
+     * @param s Input string
+     * @return Type of the input string
+     *
+     * The input string can be:
+     * @li Date/time in ISO format yyyy-MM-ddThh:mm[:ss[.zzz]]
+     * @li Date/time in ASD format yyyy.ddd.hh.mm[.ss[.zzz]]
+     * @li CUC hex string cccccccc[ffff]
+     *
+     * If the input string is invalid or no epoch is set, creates an invalid
+     * date/time value.
+     */
+    Type setDateTime(QString const & s);
+
+    /**
+     * Sets the epoch
+     * @param epoch Epoch
+     */
+    void setEpoch(QDateTime const & epoch);
+
+    /**
+     * Returns the current epoch
+     */
+    QDateTime const & epoch() const { return mEpoch; }
 
     /**
      * Returns true if the date/time value is valid.
      */
     bool isValid() const { return mDateTime.isValid(); }
 
+    /**
+     * Returns the type of the date/time string from which the date/time
+     * value was created.
+     */
+    Type type() const { return mType; }
+
+    /**
+     * Returns the current date/time value
+     */
+    QDateTime const & dateTime() const { return mDateTime; }
+
     /**
      * Returns the date/time value a string in the ISO format yyyy-MM-ddThh:mm:ss.zzz
      */
-    QString asIsoString() const;
+    QString asISOstring() const;
 
     /**
      * Returns the date/time value as a string in the ASD format yyyy.ddd.hh.mm.ss.zzz
      */
-    QString asAsdString() const;
+    QString asASDstring() const;
 
     /**
      * Returns the date/time value as a CUC hex string in the format ccccccccffff
      */
-    QString asCucHexString() const;
+    QString asCUChexString() const;
 
 
-private:
+private: // methods
 
-    /// Date/time value
-    QDateTime mDateTime;
+    Type getDateTimeType(QString const & s) const;
+
+    QDateTime strToDateTime(QString const & s, Type t) const;
+
+
+private: // members
+
+    /// Type of the input string
+    Type mType;
 
     /// Epoch
     QDateTime mEpoch;
 
+    /// Date/time value
+    QDateTime mDateTime;
+
+    /// Regular expression for ISO date/time strings
+    QRegExp * mRxIso;
+
+    /// Regular expression for ASD date/time strings
+    QRegExp * mRxAsd;
+
+    /// Regular expression for CUC date/time strings
+    QRegExp * mRxCUC;
+
 };
 
 } // namespace eVaf::ScosTime::Internal
@@ -105,13 +176,6 @@ class Module : public Plugins::iPlugin
     Q_OBJECT
     Q_INTERFACES(eVaf::Plugins::iPlugin)
 
-    enum DateTimeType
-    {
-        InvalidDateTime,
-        AsdDateTime,
-        IsoDateTime
-    };
-
     enum ValidEntry
     {
         NoValidEntry,
@@ -145,28 +209,17 @@ private slots:
 
 private: // Methods
 
-    DateTimeType getDateTimeType(QString const & s) const;
-
-    QDateTime strToDateTime(QString const & s, DateTimeType type) const;
-
-    QString dateTimeToAsdStr(QDateTime const & tm) const;
-
-    void setDateTimeFromCucHex(QString const & s);
-
-    void setCucHexFromDateTime(QString const & s, DateTimeType type);
-
 
 private: // Members
 
     /// Flag indicating that the module is ready
     bool mReady;
 
-    /// Last valid entry (field modified by the user)
-    ValidEntry mLastValidEntry;
+    /// Current date/time value
+    Internal::DateTime mDateTime;
 
-    /// Regular expressions
-    QRegExp * rxIsoDateTime;
-    QRegExp * rxAsdDateTime;
+    /// Last date/time format type used in the date/time entry field
+    Internal::DateTime::Type mLastDateTimeType;
 
     /// Widgets on the screen
     QComboBox * wEpoch;