/* ----------------------------------------------------------------- */
///
/// Expand
///
/// <summary>
/// RSS カテゴリの子要素が表示された状態に設定します。
/// </summary>
///
/// <param name="src">カテゴリ</param>
///
/* ----------------------------------------------------------------- */
public static void Expand(this IRssEntry src)
{
var current = src;
while (current is RssCategory category)
{
category.Expanded = true;
current = category.Parent;
}
}
/* ----------------------------------------------------------------- */
///
/// Read
///
/// <summary>
/// 指定されたオブジェクトの全ての記事を既読設定にします。
/// </summary>
///
/// <param name="src">RSS エントリまたはカテゴリ</param>
///
/* ----------------------------------------------------------------- */
public static void Read(this IRssEntry src)
{
if (src is RssCategory rc)
{
ReadCore(rc);
}
else if (src is RssEntry re)
{
ReadCore(re);
}
}
/* ----------------------------------------------------------------- */
///
/// Select
///
/// <summary>
/// RSS フィードを選択します。
/// </summary>
///
/// <param name="src">選択項目</param>
///
/* ----------------------------------------------------------------- */
public void Select(IRssEntry src)
{
Data.Current.Value = src;
if (src is RssEntry current && current != Data.LastEntry.Value)
{
_core.Select(Data.LastEntry.Value, current);
current.Selected = true;
Data.LastEntry.Value = current;
Select(current.Items.FirstOrDefault());
Settings.Shared.StartUri = current.Uri;
}
}
/* ----------------------------------------------------------------- */
///
/// Convert
///
/// <summary>
/// XElement オブジェクトを解析し、IRssEntry オブジェクトに
/// 変換します。
/// </summary>
///
/* ----------------------------------------------------------------- */
private IEnumerable <IRssEntry> Convert(XElement src,
IRssEntry parent, IDictionary <Uri, RssFeed> filter) =>
src.GetElements("outline")
.Select(e => IsEntry(e) ? ToEntry(e, parent) : ToCategory(e, parent, filter))
.OfType <IRssEntry>()
.Where(e => e is RssCategory rc && rc.Children.Count > 0 ||
/* ----------------------------------------------------------------- */
///
/// Move
///
/// <summary>
/// 項目を移動します。
/// </summary>
///
/// <param name="src">移動元の項目</param>
/// <param name="dest">移動先のカテゴリ</param>
/// <param name="index">カテゴリ中の挿入場所</param>
///
/* ----------------------------------------------------------------- */
public void Move(IRssEntry src, IRssEntry dest, int index) =>
_core.Move(src, dest, index);