/* ----------------------------------------------------------------- */
///
/// Update
///
/// <summary>
/// RSS の内容を更新します。
/// </summary>
///
/// <param name="dest">更新先オブジェクト</param>
/// <param name="src">更新内容</param>
///
/// <returns>新着記事数</returns>
///
/* ----------------------------------------------------------------- */
public static int Update(this RssEntry dest, RssFeed src)
{
var threshold = dest.LastChecked;
dest.LastChecked = src.LastChecked;
if (src.Error != null)
{
dest.LogDebug($"{dest.Uri} ({src.Error.GetType().Name})");
src.Title = dest.Title;
return(0);
}
var received = src.Items.Shrink(threshold).ToList();
foreach (var item in received)
{
dest.Items.Insert(0, item);
}
dest.Description = src.Description;
dest.Count = dest.UnreadItems.Count();
dest.Link = src.Link;
dest.LastPublished = src.LastPublished;
return(received.Count);
}
/* ----------------------------------------------------------------- */
///
/// PropertyViewModel
///
/// <summary>
/// オブジェクトを初期化します。
/// </summary>
///
/// <param name="entry">RssEntry オブジェクト</param>
/// <param name="callback">コールバック関数</param>
///
/* ----------------------------------------------------------------- */
public PropertyViewModel(RssEntry entry, Action <RssEntry> callback) :
base(new Messenger())
{
System.Diagnostics.Debug.Assert(entry != null);
Entry = new Bindable <RssEntry>(entry);
_callback = callback;
}
/* ----------------------------------------------------------------- */
///
/// Read
///
/// <summary>
/// 既読設定にします。
/// </summary>
///
/// <param name="src">RssEntry オブジェクト</param>
/// <param name="item">RssItem オブジェクト</param>
///
/* ----------------------------------------------------------------- */
public static void Read(this RssEntry src, RssItem item)
{
if (item != null && item.Status != RssItemStatus.Read)
{
src.Count = Math.Max(src.UnreadItems.Count() - 1, 0);
item.Status = RssItemStatus.Read;
}
}
/* ----------------------------------------------------------------- */
///
/// Shrink
///
/// <summary>
/// 既読記事を削除します。
/// </summary>
///
/// <param name="src">RSS フィード</param>
///
/* ----------------------------------------------------------------- */
public static void Shrink(this RssEntry src)
{
for (var i = src.Items.Count - 1; i >= 0; --i)
{
if (src.Items[i].Status == RssItemStatus.Read)
{
src.Items.RemoveAt(i);
}
}
}
/* ----------------------------------------------------------------- */ /// /// Reschedule /// /// <summary> /// RSS フィードのチェック方法を再設定します。 /// </summary> /// /// <param name="src">選択項目</param> /// /* ----------------------------------------------------------------- */ public void Reschedule(RssEntry src) => _core.Reschedule(src);
