/* Copyright (c) 2006 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#region Using directives
#define USE_TRACING
using System;
using System.Xml;
using System.Globalization;
using System.ComponentModel;
using System.Runtime.InteropServices;
#endregion
//////////////////////////////////////////////////////////////////////
// Contains AtomBaseLink.
//////////////////////////////////////////////////////////////////////
namespace Google.GData.Client{
//////////////////////////////////////////////////////////////////////
/// <summary>TypeConverter, so that AtomBaseLink shows up in the property pages
/// </summary>
//////////////////////////////////////////////////////////////////////
[ComVisible(false)]
public class AtomBaseLinkConverter : ExpandableObjectConverter
{
///<summary>Standard type converter method</summary>
public override bool CanConvertTo(ITypeDescriptorContext context, System.Type destinationType)
{
if (destinationType == typeof(AtomBaseLink)
|| destinationType == typeof(AtomId)
|| destinationType == typeof(AtomIcon)
|| destinationType == typeof(AtomLogo)
)
return true;
return base.CanConvertTo(context, destinationType);
}
/// <summary>standard ConvertTo typeconverter code</summary>
///<summary>Standard type converter method</summary>
public override object ConvertTo(ITypeDescriptorContext context,CultureInfo culture, object value, System.Type destinationType)
{
AtomBaseLink link = value as AtomBaseLink;
if (destinationType == typeof(System.String) && link != null)
{
return "Uri: " + link.Uri;
}
return base.ConvertTo(context, culture, value, destinationType);
}
}
/////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////
/// <summary>AtomBaselink is an intermediate object that adds the URI property
/// used as the parent class for a lot of other objects (like atomlink, atomicon, etc)
/// </summary>
//////////////////////////////////////////////////////////////////////
public abstract class AtomBaseLink : AtomBase
{
/// <summary>holds the string rep</summary>
private AtomUri uriString;
//////////////////////////////////////////////////////////////////////
/// <summary>accessor method public string Uri</summary>
/// <returns> </returns>
//////////////////////////////////////////////////////////////////////
public AtomUri Uri
{
get {return this.uriString;}
set {this.Dirty = true; this.uriString = value;}
}
/////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////
/// <summary>public Uri AbsoluteUri</summary>
//////////////////////////////////////////////////////////////////////
public string AbsoluteUri
{
get
{
return GetAbsoluteUri(this.Uri.ToString());
}
}
/////////////////////////////////////////////////////////////////////////////
#region Persistence overloads
//////////////////////////////////////////////////////////////////////
/// <summary>saves the inner state of the element</summary>
/// <param name="writer">the xmlWriter to save into </param>
//////////////////////////////////////////////////////////////////////
protected override void SaveInnerXml(XmlWriter writer)
{
base.SaveInnerXml(writer);
WriteEncodedString(writer, this.Uri);
}
/////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////
/// <summary>figures out if this object should be persisted</summary>
/// <returns> true, if it's worth saving</returns>
//////////////////////////////////////////////////////////////////////
public override bool ShouldBePersisted()
{
if (base.ShouldBePersisted() == false)
{
return Utilities.IsPersistable(this.uriString);
}
return true;
}
/////////////////////////////////////////////////////////////////////////////
#endregion
}
/////////////////////////////////////////////////////////////////////////////
}
/////////////////////////////////////////////////////////////////////////////
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