namespace PDFPatcher.Processor
{
	sealed class BookmarkOpenStatusProcessor : IPdfInfoXmlProcessor, IPdfInfoXmlProcessor<bool>
	{
		/// <summary>
		/// 表示处理器是否应打开书签。
		/// </summary>
		public bool Parameter { get; set; }
		public BookmarkOpenStatusProcessor() {
		}
		public BookmarkOpenStatusProcessor(bool open) {
			Parameter = open;
		}

		#region IInfoDocProcessor 成员

		public string Name => $"设置书签状态为{(Parameter ? "打开" : "关闭")}";

		public IUndoAction Process(System.Xml.XmlElement item) {
			if (item.SelectSingleNode(Constants.Bookmark) == null) {
				return null;
			}
			var v = item.HasChildNodes && item.SelectSingleNode(Constants.Bookmark) != null && Parameter
				? Constants.Boolean.True
				: null;
			return UndoAttributeAction.GetUndoAction(item, Constants.BookmarkAttributes.Open, v);
		}

		#endregion

	}
}