public DebugArticle(Article a)
{
source = a;
InitializeComponent();
articleTitleLabel.Text = a.Title;
articleContentTextBox.Text = a.Content;
articleUriLinkLabel.Text = a.Uri.ToString();
TimeSpan diff = DateTime.Now.Subtract(a.CreationTime);
string creationTimeString = string.Format("Article créé il y a {0} minute(s), le {1}, à {2}.",
diff.TotalMinutes.ToString(),
a.CreationTime.ToShortDateString(),
a.CreationTime.ToShortTimeString());
creationDateTimeLabel.Text = creationTimeString;
pushedCounterLabel.Text = string.Format("Article poussé {0} fois dans la base de données.", a.PushCounter);
viewCounterLabel.Text = string.Format("Article affiché {0} fois.", a.ViewCounter);
clickCounterLabel.Text = string.Format("Lien cliqué {0} fois.", a.ClickCounter);
}
public RegularArticlePanel(IControllerPlugin ctrl, Article a)
: base(ctrl, a)
{
InitializeComponent();
if (a.IsNew()==true )
{
BackColor = plugins.Default.EmphasizedBackColor;
}
splitContainer1.Panel2.BackColor = plugins.Default.MouseOverArticleBackColor;
splitContainer1.Panel2Collapsed = true;
TextControl titleControl = new TextControl( Toolkit.UnHTML(a.Title) );
titleControl.Dock = DockStyle.Fill;
titleControl.MouseEnter += new EventHandler(titleControl_MouseEnter);
titleControl.MouseClick += new MouseEventHandler(TextControl_MouseClick);
splitContainer1.Panel1.Controls.Add(titleControl);
TextControl contentControl = new TextControl( Toolkit.UnHTML(a.Content) );
contentControl.Cursor = Cursors.Hand;
contentControl.Dock = DockStyle.Fill;
contentControl.MouseLeave += new EventHandler(contentControl_MouseLeave);
contentControl.MouseClick += new MouseEventHandler(TextControl_MouseClick);
splitContainer1.Panel2.Controls.Add(contentControl);
mediaControl = MediaControl.Get();
mediaControl.Dock = DockStyle.Fill;
panel1.Controls.Add(mediaControl);
Resize += new EventHandler(RegularArticlePanel_Resize);
RegularArticlePanel_Load(null, EventArgs.Empty);
}
protected override Article CreateArticle(Site s, XPathNavigator navigator)
{
Article output = new Article(s.Guid);
UpdateTitle(output, navigator);
UpdateContent(output, navigator);
UpdateUri(output, navigator);
UpdateMedias(output, navigator);
return output;
}
private void Update(TreeNode tn, Article a)
{
tn.Text = a.Title;
Touch(tn, a);
}
/// <summary>
///
/// </summary>
/// <param name="a"></param>
/// <param name="navigator"></param>
/// <param name="expression"></param>
/// <returns>Returns a reference to the Media that has been pushed into the database, or null
/// if no Media has been created as a main media for the Article</returns>
private Media TryUpdateMedia(Article a, XPathNavigator navigator, string[] patterns)
{
Database database = Database.GetInstance();
try
{
string mediaUri = null;
foreach (string pattern in patterns)
{
try
{
mediaUri = XmlFetcher.GetSingleValue(navigator, pattern, xmlnsManager);
break;
}
catch
{
mediaUri = null;
}
}
if(string.IsNullOrEmpty(mediaUri))
{
return null;
}
Console.WriteLine(" MEDIA= {0}", mediaUri);
Media media = new Media();
media.Uri = new Uri(mediaUri);
media = database.Push(media);
a.Media = media.Guid;
return media;
}
catch (ArgumentException)
{
return null;
}
}
public void Add(Article a)
{
articles.Add(a);
}
internal bool Contains(Article a)
{
return articles.Contains(a);
}
private Article(Article src)
: base(src)
{
Update(src);
}
public bool IsSimilarTo(Article a)
{
if (this.Site != a.Site)
{
throw new ArgumentException();
}
if (string.Compare(this.title, a.title) == 0)
{
if (Toolkit.Equals(this.uri, a.uri) == true)
{
return true;
}
}
return false;
}
private void UpdateUri(Article a, XPathNavigator navigator)
{
string[] patterns = new string[]
{
"./atom:link[@rel='alternate']/@href", // atom
"./atom:link/@href", // atom
"./link", // rss
};
foreach (string pattern in patterns)
{
try
{
a.Uri = new Uri(XmlFetcher.GetSingleValue(navigator, pattern, xmlnsManager));
return;
}
catch
{
}
}
}
private void UpdateTitle(Article a, XPathNavigator navigator)
{
string[] patterns = new string[]
{
"./title", // rss
"./atom:title" // atom
};
foreach (string pattern in patterns)
{
try
{
a.Title = XmlFetcher.GetSingleValue(navigator, pattern, xmlnsManager);
Console.WriteLine(">> TITLE= {0}", a.Title);
return;
}
catch
{
}
}
}
private void UpdateMedias(Article a, XPathNavigator navigator)
{
Media thumbnail = null;
Media media = null;
// Try obtaining URL to a thumbnail
// that accompanies the Article
thumbnail = TryUpdateThumbnail(a, navigator, ThumbnailPatterns);
// Try to obtain a URL to a media
// that accompanies the Article
media = TryUpdateMedia(a, navigator, MediaPatterns);
/*if (media == null)
{
media = TryUpdateMedia(a, navigator, "./enclosure/@url");
}*/
// Tweak priorities:
// If the Article has no thumbnail, but has a main media,
// and if that main media is an image, set the Priority
// flag to accelerate the download.
if( (thumbnail==null) && (media!=null) )
{
if (media.Type == Media.MediaType.IMAGE)
{
media.Priority = true;
}
}
}
private void UpdateContent(Article a, XPathNavigator navigator)
{
string[] patterns = new string[]
{
"./description", // rss
"./atom:summary" // atom
};
foreach (string pattern in patterns)
{
try
{
a.Content = XmlFetcher.GetSingleValue(navigator, pattern, xmlnsManager);
return;
}
catch
{
}
}
}
/// <summary>
///
/// </summary>
/// <param name="a"></param>
/// <param name="navigator"></param>
/// <param name="expression"></param>
/// <returns>Returns a reference to the Media that has been pushed into the database, or null
/// if no Media has been created as a thumbnail for the Article.</returns>
private Media TryUpdateThumbnail(Article a, XPathNavigator navigator, string[] patterns)
{
Database database = Database.GetInstance();
try
{
string thumbnailUri = null;
foreach (string pattern in patterns)
{
try
{
thumbnailUri = XmlFetcher.GetSingleValue(navigator, pattern, xmlnsManager);
break;
}
catch
{
thumbnailUri = null;
}
}
if (string.IsNullOrEmpty(thumbnailUri))
{
return null;
}
Console.WriteLine(" THUMB= {0}", thumbnailUri);
Media thumbnail = new Media();
thumbnail.Uri = new Uri(thumbnailUri);
thumbnail.Priority = true;
thumbnail = database.Push(thumbnail);
a.Thumbnail = thumbnail.Guid;
return thumbnail;
}
catch (ArgumentException)
{
return null;
}
}
/// <summary>
/// Returns true if the specified Article is new,
/// with regards to the configuration of this Site.
/// </summary>
/// <param name="a"></param>
/// <returns></returns>
public bool IsNew(Article a)
{
bool isNew = false;
// the article is new if it is
// less than 3 hours old
TimeSpan diff = DateTime.Now.Subtract(a.CreationTime);
isNew |= (diff.TotalMinutes < 3*60);
// or if it has never been seen
// by the user
isNew |= (a.ViewCounter <= 1);
// but the article is not new anymore
// if it has been clicked
isNew &= (a.ClickCounter == 0);
return isNew;
}
/// <summary>
/// Returns true if the specified Article is old,
/// with regards to the configuration of this Site.
/// </summary>
/// <param name="a"></param>
/// <returns></returns>
public bool IsOld(Article a)
{
bool isOld = false;
// the article is old if it is
// more than 8 hours old
TimeSpan diff = DateTime.Now.Subtract(a.CreationTime);
isOld |= (diff.TotalMinutes > 8 * 60);
return isOld;
}
/// <summary>
/// Check in the database if an article similar to "newA"
/// already exists. If the answer is "yes", then the article
/// from the database is returned. If the answer is "no", then
/// the provided article is added into the database and returned
/// to the caller.
/// </summary>
/// <param name="fp"></param>
/// <param name="newA"></param>
/// <returns></returns>
private Article FindOrAdd(FrontPage fp, Article newA)
{
foreach (Article a in fp.Articles)
{
if (a.IsSimilarTo(newA) == true)
{
return a;
}
}
newA = (Article)newA.Clone();
fp.Add(newA);
if (ArticleAdded != null)
{
ArticleAdded(newA, EventArgs.Empty);
}
return newA;
}
/// <summary>
/// Updates the content of this article with
/// the content of the article specified in argument.
/// </summary>
/// <param name="fp"></param>
/// <returns>true is any field in this article has been changed because of the update. false otherwise (implies that this article and the one in argument have similar content).</returns>
public bool Update(Article a)
{
bool output = false;
if (this.Site != a.Site)
{
throw new ArgumentException();
}
if (string.Compare(this.title, a.title) != 0)
{
this.title = a.title;
output = true;
}
if (string.Compare(this.content, a.content) != 0)
{
this.content = a.content;
output = true;
}
if (Toolkit.Equals(this.uri, a.uri) == false)
{
this.uri = a.uri;
output = true;
}
if(this.thumbnail != a.thumbnail)
{
this.thumbnail = a.thumbnail;
output = true;
}
if (this.media != a.media)
{
this.media = a.media;
output = true;
}
return output;
}
private void LoadSite(Guid siteId, XmlReader input)
{
while (input.Read())
{
if (input.NodeType == XmlNodeType.Element)
{
if (input.Name == "frontpage")
{
using (XmlReader subTree = input.ReadSubtree())
{
FrontPage newFp = new FrontPage(siteId, subTree);
TouchOrUpdate(newFp);
}
}
else if (input.Name == "article")
{
using (XmlReader subTree = input.ReadSubtree())
{
Article a = new Article(siteId, subTree);
TouchOrUpdate(a);
}
}
}
}
}
public object Clone()
{
Article output = new Article(this);
return output;
}
private Article TouchOrUpdate(Article newA)
{
FrontPage fp = FindFrontPage(newA.Site);
Article a = FindOrAdd(fp, newA);
if (a.Update(newA) == true)
{
if (ArticleUpdated != null)
{
ArticleUpdated(a, EventArgs.Empty);
}
}
else
{
if (ArticleTouched != null)
{
ArticleTouched(a, EventArgs.Empty);
}
}
return a;
}
internal bool Remove(Article a)
{
return articles.Remove(a);
}
private void DisplayArticle(Article a)
{
if( articlesSplitContainer.Panel2.Controls.Count==1)
{
Control old = articlesSplitContainer.Panel2.Controls[0];
articlesSplitContainer.Panel2.Controls.Clear();
old.Dispose();
}
if (a != null)
{
DebugArticle p = new DebugArticle(a);
p.Dock = DockStyle.Fill;
articlesSplitContainer.Panel2.Controls.Add(p);
}
}
private TreeNode FindOrCreateNode(Article a)
{
TreeNode siteNode = FindOrCreateRoot(a.Site);
TreeNode frontPageNode = siteNode.Nodes[0];
foreach (TreeNode tn in frontPageNode.Nodes)
{
Guid id = (Guid)tn.Tag;
if (id.CompareTo(a.Guid) == 0)
{
return tn;
}
}
TreeNode newTn = new TreeNode();
newTn.Tag = a.Guid;
Update(newTn, a);
//newTn.ImageKey = "article.png";
//newTn.SelectedImageKey = "article.png";
frontPageNode.Nodes.Add(newTn);
return newTn;
}
private void Touch(TreeNode tn, Article a)
{
Site s = FindSite(a.Site);
if (s == null)
{
tn.ImageKey = "article_removed.png";
}
else if (s.IsNew(a) == true)
{
tn.ImageKey = "article_new.png";
}
else if (s.IsOld(a) == true)
{
tn.ImageKey = "article_old.png";
}
else
{
tn.ImageKey = "article.png";
}
tn.SelectedImageKey = tn.ImageKey;
}
public ArticleControl(IControllerPlugin ctrl, Article a)
{
controller = ctrl;
article = a;
}
public static Site FindSiteOf(Article a)
{
return FindSite(a.Site);
}