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// Copyright 2008, 2010, Oracle and/or its affiliates. All rights reserved.
//
// MySQL Connector/NET is licensed under the terms of the GPLv2
// <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most
// MySQL Connectors. There are special exceptions to the terms and
// conditions of the GPLv2 as it is applied to this software, see the
// FLOSS License Exception
// <http://www.mysql.com/about/legal/licensing/foss-exception.html>.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published
// by the Free Software Foundation; version 2 of the License.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.ComponentModel;
using System.Collections;
using System.Diagnostics;
namespace MySql.Data.VisualStudio.DbObjects
{
internal class CollationTypeConverter : StringConverter
{
private DataTable collationData;
public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
{
return true;
}
public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)
{
return true;
}
public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
{
Table table = (context.Instance is Table) ?
(context.Instance as Table) : (context.Instance as Column).OwningTable;
if (collationData == null)
PopulateList(table);
StandardValuesCollection coll =
new StandardValuesCollection(GetRelevantCollations(context.Instance));
return coll;
}
private List<string> GetRelevantCollations(object instance)
{
List<string> collations = new List<string>();
string charset = String.Empty;
if (instance is Table)
charset = (instance as Table).CharacterSet;
else
charset = (instance as Column).CharacterSet;
if (String.IsNullOrEmpty(charset)) return collations;
foreach (DataRow row in collationData.Rows)
if (row["charset"].Equals(charset))
collations.Add(row["collation"].ToString());
return collations;
}
private void PopulateList(Table table)
{
collationData = table.OwningNode.GetDataTable("SHOW COLLATION");
}
}
}
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