//
// SyndicationItem.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 SyndicationItem : ISyndicationElement
{
public static SyndicationItem Load (XmlReader reader)
{
return Load<SyndicationItem> (reader);
}
public static TSyndicationItem Load<TSyndicationItem> (XmlReader reader) where TSyndicationItem : SyndicationItem, new()
{
return SyndicationVersions.LoadItem<TSyndicationItem> (reader);
}
SyndicationExtensions extensions = new SyndicationExtensions ();
Collection<SyndicationCategory> categories;
Collection<SyndicationPerson> authors, contributors;
Collection<SyndicationLink> links;
Uri base_uri;
TextSyndicationContent copyright, summary, title;
SyndicationContent content;
string id;
DateTimeOffset last_updated_time, published_date;
SyndicationFeed source_feed;
public SyndicationItem ()
{
}
public SyndicationItem (string title, string content, Uri feedAlternateLink)
: this (title, content, feedAlternateLink, null, default (DateTimeOffset))
{
}
public SyndicationItem (string title, string content, Uri feedAlternateLink, string id,
DateTimeOffset lastUpdatedTime)
: this (title, content != null ? SyndicationContent.CreatePlaintextContent (content) : null, feedAlternateLink, id, lastUpdatedTime)
{
}
public SyndicationItem (string title, SyndicationContent content, Uri feedAlternateLink, string id,
DateTimeOffset lastUpdatedTime)
{
Title = title != null ? new TextSyndicationContent (title) : null;
Content = content;
if (feedAlternateLink != null)
AddPermalink (feedAlternateLink);
Id = id;
LastUpdatedTime = lastUpdatedTime;
}
protected SyndicationItem (SyndicationItem source)
{
extensions = source.extensions.Clone ();
categories = Copy<SyndicationCategory> (source.categories);
authors = Copy<SyndicationPerson> (source.authors);
contributors = Copy<SyndicationPerson> (source.contributors);
links = Copy<SyndicationLink> (source.links);
base_uri = source.base_uri; // copy by reference !!
copyright = source.copyright == null ? null : source.copyright.Clone () as TextSyndicationContent;
summary = source.summary == null ? null : source.summary.Clone () as TextSyndicationContent;
title = source.title == null ? null : source.title.Clone () as TextSyndicationContent;
content = source.content == null ? null : source.content.Clone ();
id = source.id;
last_updated_time = source.last_updated_time;
published_date = source.published_date;
source_feed = source.source_feed == null ? null : source.source_feed.Clone (false);
}
Collection<T> Copy<T> (Collection<T> source)
{
if (source == null)
return source;
Collection<T> ret = new Collection<T> ();
foreach (object item in source)
ret.Add ((T) CreateCopy (item));
return ret;
}
object CreateCopy (object source)
{
if (source == null)
return null;
if (source is SyndicationPerson)
return ((SyndicationPerson) source).Clone ();
if (source is SyndicationLink)
return ((SyndicationLink) source).Clone ();
if (source is SyndicationCategory)
return ((SyndicationCategory) source).Clone ();
throw new InvalidOperationException ();
}
public Dictionary<XmlQualifiedName, string> AttributeExtensions {
get { return extensions.Attributes; }
}
public SyndicationElementExtensionCollection ElementExtensions {
get { return extensions.Elements; }
}
public Collection<SyndicationPerson> Authors {
get {
if (authors == null)
authors = new Collection<SyndicationPerson> ();
return authors;
}
}
public Collection<SyndicationCategory> Categories {
get {
if (categories == null)
categories = new Collection<SyndicationCategory> ();
return categories;
}
}
public Collection<SyndicationPerson> Contributors {
get {
if (contributors == null)
contributors = new Collection<SyndicationPerson> ();
return contributors;
}
}
public Collection<SyndicationLink> Links {
get {
if (links == null)
links = new Collection<SyndicationLink> ();
return links;
}
}
public Uri BaseUri {
get { return base_uri; }
set { base_uri = value; }
}
public TextSyndicationContent Copyright {
get { return copyright; }
set { copyright = value; }
}
public SyndicationContent Content {
get { return content; }
set { content = value; }
}
public string Id {
get { return id; }
set { id = value; }
}
public DateTimeOffset LastUpdatedTime {
get { return last_updated_time; }
set { last_updated_time = value; }
}
public DateTimeOffset PublishDate {
get { return published_date; }
set { published_date = value; }
}
public SyndicationFeed SourceFeed {
get { return source_feed; }
set { source_feed = value; }
}
public TextSyndicationContent Summary {
get { return summary; }
set { summary = value; }
}
public TextSyndicationContent Title {
get { return title; }
set { title = value; }
}
public void AddPermalink (Uri link)
{
if (link == null)
throw new ArgumentNullException ("link");
Links.Add (SyndicationLink.CreateAlternateLink (link));
}
public virtual SyndicationItem Clone ()
{
return new SyndicationItem (this);
}
protected internal virtual SyndicationCategory CreateCategory ()
{
return new SyndicationCategory ();
}
protected internal virtual SyndicationLink CreateLink ()
{
return new SyndicationLink ();
}
protected internal virtual SyndicationPerson CreatePerson ()
{
return new SyndicationPerson ();
}
public Atom10ItemFormatter GetAtom10Formatter ()
{
return new Atom10ItemFormatter (this);
}
public Rss20ItemFormatter GetRss20Formatter ()
{
return GetRss20Formatter (true);
}
public Rss20ItemFormatter GetRss20Formatter (bool serializeExtensionsAsAtom)
{
return new Rss20ItemFormatter (this, serializeExtensionsAsAtom);
}
public void SaveAsAtom10 (XmlWriter writer)
{
if (writer == null)
throw new ArgumentNullException ("writer");
GetAtom10Formatter ().WriteTo (writer);
}
public void SaveAsRss20 (XmlWriter writer)
{
if (writer == null)
throw new ArgumentNullException ("writer");
GetRss20Formatter ().WriteTo (writer);
}
protected internal virtual bool TryParseContent (XmlReader reader, string contentType, string version, out SyndicationContent content)
{
content = null;
return false;
}
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);
}
}
}
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