Item delegate for SQLite date and time fields

CMakeLists.txt

@@ -282,6 +282,7 @@ set (wsjt_qt_CXXSRCS
   item_delegates/MaidenheadLocatorDelegate.cpp
   item_delegates/FrequencyDelegate.cpp
   item_delegates/FrequencyDeltaDelegate.cpp
+  item_delegates/SQLiteDateTimeDelegate.cpp
   models/CabrilloLog.cpp
   logbook/AD1CCty.cpp
   logbook/WorkedBefore.cpp

item_delegates/SQLiteDateTimeDelegate.cpp

@@ -0,0 +1,40 @@
+#include "SQLiteDateTimeDelegate.hpp"
+
+#include <QDateTimeEdit>
+#include <QDateTime>
+#include <QLocale>
+
+SQLiteDateTimeDelegate::SQLiteDateTimeDelegate (QObject * parent)
+  : QStyledItemDelegate {parent}
+{
+}
+
+QWidget * SQLiteDateTimeDelegate::createEditor (QWidget * parent, QStyleOptionViewItem const&
+                                          , QModelIndex const&) const
+{
+  auto * editor = new QDateTimeEdit {parent};
+  editor->setCalendarPopup (true);
+  editor->setDisplayFormat (QLocale {}.dateFormat (QLocale::ShortFormat) + " hh:mm:ss");
+  editor->setFrame (false);
+  return editor;
+}
+
+void SQLiteDateTimeDelegate::setEditorData (QWidget * editor, QModelIndex const& index) const
+{
+  auto const& value = index.model ()->data (index, Qt::EditRole);
+  if (value.isValid () && !value.isNull ())
+    {
+      static_cast<QDateTimeEdit *> (editor)->setDateTime (QDateTime::fromMSecsSinceEpoch (value.toULongLong () * 1000ull, Qt::UTC));
+    }
+}
+
+void SQLiteDateTimeDelegate::setModelData (QWidget * editor, QAbstractItemModel * model, QModelIndex const& index) const
+{
+  QVariant data;
+  auto const& value = static_cast<QDateTimeEdit *> (editor)->dateTime ();
+  if (value.isValid () && !value.isNull ())
+    {
+      data = value.toMSecsSinceEpoch () / 1000ull;
+    }
+  model->setData (index, data, Qt::EditRole);
+}

item_delegates/SQLiteDateTimeDelegate.hpp

@@ -0,0 +1,23 @@
+#ifndef SQLITE_DATE_TIME_DELEGATE_HPP_
+#define SQLITE_DATE_TIME_DELEGATE_HPP_
+
+#include <QStyledItemDelegate>
+
+//
+// Class SQLiteDateTimeDelegte
+//
+//	Item delegate for editing a date and time stored as milliseconds
+//	since the Unix epoch and displayed or edited as a QDateTime
+//	showing UTC
+//
+class SQLiteDateTimeDelegate final
+  : public QStyledItemDelegate
+{
+public:
+  explicit SQLiteDateTimeDelegate (QObject * parent = nullptr);
+  QWidget * createEditor (QWidget * parent, QStyleOptionViewItem const&, QModelIndex const&) const override;
+  void setEditorData (QWidget * editor, QModelIndex const&) const override;
+  void setModelData (QWidget * editor, QAbstractItemModel *, QModelIndex const&) const override;
+};
+
+#endif