Introduced the MasterController as part of working on loading catalogue information.

Need a central piece to manage the catalogue data per database to prevent loading
this multiple times. MasterController is now also used to enable reopening the
connection manager from a query window after the connection manager has been closed.

paramlistmodel.cpp

@@ -0,0 +1,127 @@
+#include "paramlistmodel.h"
+
+ParamListModel::ParamListModel(QObject *parent)
+	: QAbstractTableModel(parent)
+{
+}
+
+QVariant ParamListModel::headerData(int section, Qt::Orientation orientation, int role) const
+{
+	// FIXME: Implement me!
+	QVariant result;
+	if (orientation == Qt::Horizontal) {
+		if (role == Qt::DisplayRole) {
+			if (section == 0) {
+//				result = tr("$n");
+				result = tr("Value");
+			}
+			else if (section == 1) {
+				result = tr("Type");
+			}
+		}
+	}
+	else if (orientation == Qt::Vertical) {
+		if (role == Qt::DisplayRole) {
+			result = tr("$%1").arg(section + 1);
+		}
+	}
+	return result;
+}
+
+//bool ParamListModel::setHeaderData(int section, Qt::Orientation orientation, const QVariant &value, int role)
+//{
+//	if (value != headerData(section, orientation, role)) {
+//		// FIXME: Implement me!
+//		emit headerDataChanged(orientation, section, section);
+//		return true;
+//	}
+//	return false;
+//}
+
+
+int ParamListModel::rowCount(const QModelIndex &parent) const
+{
+	//if (parent.isValid())
+		return 2;
+
+	// FIXME: Implement me!
+}
+
+int ParamListModel::columnCount(const QModelIndex &parent) const
+{
+	//if (parent.isValid())
+		return 2;
+
+	// FIXME: Implement me!
+}
+
+QVariant ParamListModel::data(const QModelIndex &index, int role) const
+{
+	QVariant result;
+	if (index.isValid()) {
+		int row = index.row();
+		int col = index.column();
+		if (role == Qt::DisplayRole) {
+			switch (col) {
+			case 0: // value column
+				result = tr("val, %1").arg(row);
+				break;
+			case 1: //  type column
+				result = tr("type, %1").arg(row);
+				break;
+			}
+		}
+	}
+
+	// FIXME: Implement me!
+	return result;
+}
+
+bool ParamListModel::setData(const QModelIndex &index, const QVariant &value, int role)
+{
+	if (data(index, role) != value) {
+//		// FIXME: Implement me!
+
+		emit dataChanged(index, index, QVector<int>() << role);
+		return true;
+	}
+	return false;
+}
+
+Qt::ItemFlags ParamListModel::flags(const QModelIndex &index) const
+{
+	if (!index.isValid())
+		return Qt::NoItemFlags;
+
+	return Qt::ItemIsEnabled | Qt::ItemIsEditable; // FIXME: Implement me!
+}
+
+//bool ParamListModel::insertRows(int row, int count, const QModelIndex &parent)
+//{
+//	beginInsertRows(parent, row, row + count - 1);
+//	// FIXME: Implement me!
+//	endInsertRows();
+//	return false;
+//}
+
+//bool ParamListModel::insertColumns(int column, int count, const QModelIndex &parent)
+//{
+//	beginInsertColumns(parent, column, column + count - 1);
+//	// FIXME: Implement me!
+//	endInsertColumns();
+//}
+
+//bool ParamListModel::removeRows(int row, int count, const QModelIndex &parent)
+//{
+//	beginRemoveRows(parent, row, row + count - 1);
+//	// FIXME: Implement me!
+//	endRemoveRows();
+//	return false;
+//}
+
+//bool ParamListModel::removeColumns(int column, int count, const QModelIndex &parent)
+//{
+//	beginRemoveColumns(parent, column, column + count - 1);
+//	// FIXME: Implement me!
+//	endRemoveColumns();
+//}