public bool ContainsChild(NodeTree nt)
{
if (ContainsChildLoop(this.Children, nt))
{
return(true);
}
else
{
return(false);
}
}
private bool ContainsChildLoop(ObservableCollection <NodeTree> childList, NodeTree ntc)
{
bool hasChild = false;
foreach (var c in childList)
{
if (c == ntc)
{
return(true);
}
if (c.Children.Count > 0)
{
if (ContainsChildLoop(c.Children, ntc))
{
return(true);
}
}
}
return(hasChild);
}
// Export OPML
public XmlDocument WriteOpml(NodeTree serviceRootNode)
{
XmlDocument xdoc = new();
XmlDeclaration xdec = xdoc.CreateXmlDeclaration("1.0", "UTF-8", null);
xdoc.AppendChild(xdec);
XmlElement eleRoot = xdoc.CreateElement(string.Empty, "opml", string.Empty);
xdoc.AppendChild(eleRoot);
XmlAttribute verAttr = xdoc.CreateAttribute("version");
verAttr.Value = "1.0";
eleRoot.SetAttributeNode(verAttr);
XmlElement eleHead = xdoc.CreateElement(string.Empty, "head", string.Empty);
XmlElement eleTitle = xdoc.CreateElement(string.Empty, "title", string.Empty);
eleTitle.InnerText = "Exported at " + DateTime.Now.ToString();
eleHead.AppendChild(eleTitle);
eleRoot.AppendChild(eleHead);
XmlElement eleBody = xdoc.CreateElement(string.Empty, "body", string.Empty);
eleRoot.AppendChild(eleBody);
foreach (NodeTree nt in serviceRootNode.Children)
{
if (nt is NodeFeed)
{
XmlElement eleOutline = xdoc.CreateElement(string.Empty, "outline", string.Empty);
eleBody.AppendChild(eleOutline);
XmlAttribute typeAttr = xdoc.CreateAttribute("type");
typeAttr.Value = "rss";
eleOutline.SetAttributeNode(typeAttr);
XmlAttribute textAttr = xdoc.CreateAttribute("text");
textAttr.Value = nt.Name;
eleOutline.SetAttributeNode(textAttr);
XmlAttribute titleAttr = xdoc.CreateAttribute("title");
titleAttr.Value = nt.Name;
eleOutline.SetAttributeNode(titleAttr);
XmlAttribute xmlUriAttr = xdoc.CreateAttribute("xmlUrl");
xmlUriAttr.Value = (nt as NodeFeed).EndPoint.AbsoluteUri;
eleOutline.SetAttributeNode(xmlUriAttr);
if ((nt as NodeFeed).SiteUri is not null)
{
XmlAttribute htmlUriAttr = xdoc.CreateAttribute("htmlUrl");
htmlUriAttr.Value = (nt as NodeFeed).SiteUri.AbsoluteUri;
eleOutline.SetAttributeNode(htmlUriAttr);
}
continue;
}
if (nt is NodeFolder)
{
XmlElement eleOutline = xdoc.CreateElement(string.Empty, "outline", string.Empty);
eleBody.AppendChild(eleOutline);
XmlAttribute textAttr = xdoc.CreateAttribute("text");
textAttr.Value = nt.Name;
eleOutline.SetAttributeNode(textAttr);
XmlAttribute titleAttr = xdoc.CreateAttribute("title");
titleAttr.Value = nt.Name;
eleOutline.SetAttributeNode(titleAttr);
ProcessNodeFolderChild((nt as NodeFolder), xdoc, eleOutline);
}
}
return(xdoc);
}