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//
// SyndicationLink.cs
//
// Author:
// Atsushi Enomoto <atsushi@ximian.com>
//
// Copyright (C) 2007 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Runtime.Serialization;
using System.Text;
using System.Xml;
namespace System.ServiceModel.Syndication
{
public class SyndicationLink : ISyndicationElement
{
#region Static members
public static SyndicationLink CreateAlternateLink (Uri uri)
{
return CreateAlternateLink (uri, null);
}
public static SyndicationLink CreateAlternateLink (Uri uri, string mediaType)
{
return new SyndicationLink (uri, "alternate", null, mediaType, 0);
}
public static SyndicationLink CreateMediaEnclosureLink (Uri uri, string mediaType, long length)
{
return new SyndicationLink (uri, "enclosure", null, mediaType, length);
}
public static SyndicationLink CreateSelfLink (Uri uri)
{
return CreateSelfLink (uri, null);
}
public static SyndicationLink CreateSelfLink (Uri uri, string mediaType)
{
return new SyndicationLink (uri, "self", null, mediaType, 0);
}
#endregion
#region Instance members
Uri base_uri, href;
long length;
string rel, title, type;
SyndicationExtensions extensions = new SyndicationExtensions ();
public SyndicationLink ()
{
}
public SyndicationLink (Uri uri)
{
Uri = uri;
}
public SyndicationLink (Uri uri, string relationshipType, string title, string mediaType, long length)
{
Uri = uri;
RelationshipType = relationshipType;
Title = title;
MediaType = mediaType;
Length = length;
}
protected SyndicationLink (SyndicationLink source)
{
if (source == null)
throw new ArgumentNullException ("source");
base_uri = source.base_uri;
href = source.href;
length = source.length;
rel = source.rel;
title = source.title;
type = source.type;
extensions = source.extensions.Clone ();
}
public Dictionary<XmlQualifiedName, string> AttributeExtensions {
get { return extensions.Attributes; }
}
public SyndicationElementExtensionCollection ElementExtensions {
get { return extensions.Elements; }
}
public Uri BaseUri {
get { return base_uri; }
set {
if (value != null && !value.IsAbsoluteUri)
throw new ArgumentException ("Base URI must not be relative");
base_uri = value;
}
}
public long Length {
get { return length; }
set {
if (value < 0)
throw new ArgumentOutOfRangeException ("value");
length = value;
}
}
public string MediaType {
get { return type; }
set { type = value; }
}
public string RelationshipType {
get { return rel; }
set { rel = value; }
}
public string Title {
get { return title; }
set { title = value; }
}
public Uri Uri {
get { return href; }
set { href = value; }
}
public virtual SyndicationLink Clone ()
{
return new SyndicationLink (this);
}
protected internal virtual bool TryParseAttribute (string name, string ns, string value, string version)
{
return false;
}
protected internal virtual bool TryParseElement (XmlReader reader, string version)
{
return false;
}
protected internal virtual void WriteAttributeExtensions (XmlWriter writer, string version)
{
extensions.WriteAttributeExtensions (writer, version);
}
protected internal virtual void WriteElementExtensions (XmlWriter writer, string version)
{
extensions.WriteElementExtensions (writer, version);
}
public Uri GetAbsoluteUri ()
{
if (href == null)
return null;
// our BaseUri is always absolute (unlike .NET).
return base_uri != null ? new Uri (base_uri, href.ToString ()) : href.IsAbsoluteUri ? href : null;
}
#endregion
}
}
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