111 lines
3.5 KiB
C#
111 lines
3.5 KiB
C#
//
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// System.Web.UI.DataSourceCacheDurationConverter.cs
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//
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// Authors:
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// Arina Itkes (arinai@mainsoft.com)
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// Marek Habersack <mhabersack@novell.com>
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//
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// (C) 2007 Mainsoft Co. (http://www.mainsoft.com)
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// (C) 2010 Novell, Inc (http://novell.com/)
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//
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.ComponentModel.Design.Serialization;
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using System.Globalization;
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using System.Security.Permissions;
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namespace System.Web.UI
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{
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[AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
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[AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
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public class DataSourceCacheDurationConverter : Int32Converter
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{
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static readonly List <int> standardValues = new List <int> {
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0
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};
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public DataSourceCacheDurationConverter ()
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{
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}
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public override bool CanConvertFrom (ITypeDescriptorContext context, Type sourceType)
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{
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if (sourceType == typeof (string))
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return true;
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return base.CanConvertFrom (context, sourceType);
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}
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public override bool CanConvertTo (ITypeDescriptorContext context, Type destinationType)
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{
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if (destinationType == typeof (string))
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return true;
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return base.CanConvertTo (context, destinationType);
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}
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public override object ConvertFrom (ITypeDescriptorContext context, CultureInfo culture, object value)
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{
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if (value == null)
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return null;
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string val = value as string;
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if (val != null && (val.Length == 0 || String.Compare ("infinite", val, StringComparison.OrdinalIgnoreCase) == 0))
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return (int)0;
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return base.ConvertFrom (context, culture, value);
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}
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public override object ConvertTo (ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
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{
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if (destinationType == typeof (string)) {
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if (value == null)
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return String.Empty;
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if (value is int && (int)value == 0)
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return "Infinite";
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}
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return base.ConvertTo (context, culture, value, destinationType);
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}
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public override StandardValuesCollection GetStandardValues (ITypeDescriptorContext context)
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{
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return new StandardValuesCollection (standardValues);
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}
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public override bool GetStandardValuesExclusive (ITypeDescriptorContext context)
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{
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return false;
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}
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public override bool GetStandardValuesSupported (ITypeDescriptorContext context)
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{
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return true;
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}
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}
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}
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