private static void CreateElement(InlineCollection parent, Node node, RichTextBlockStatus status) { switch (node) { case Element element: switch (element.TagName.ToLower()) { case "a": { // We want to change BaseUri easily, so we use `GetAttribute("href")` instead of `HtmlAnchorElement.Href` var href = element.GetAttribute("href"); if (!status.TryCreateUri(href, out var uri)) break; parent.Add(new Run() { Text = " " }); var hyperlink = new Hyperlink() { NavigateUri = uri, Foreground = status.Foreground }; foreach (var child in element.ChildNodes) { switch (child) { case HtmlImageElement childElement: if (CreateImage(element, status) is Image image) { if (hyperlink.Inlines.Count != 0) { hyperlink.SetUri(href); status.Hyperlinks.Add(hyperlink); parent.Add(hyperlink); } var button = new HyperlinkButton() { NavigateUri = uri, Content = image, RequestedTheme = status.RequestedTheme }; button.SetUri(href); status.HyperlinkButtons.Add(button); parent.Add(new InlineUIContainer() { Child = button }); hyperlink = new Hyperlink() { NavigateUri = uri, Foreground = status.Foreground }; } break; default: CreateElement(hyperlink.Inlines, child, status); break; } break; } if (hyperlink.Inlines.Count != 0) { hyperlink.SetUri(href); status.Hyperlinks.Add(hyperlink); parent.Add(hyperlink); } parent.Add(new Run() { Text = " " }); } break; case "img": { if (CreateImage(element, status) is Image image) parent.Add(new InlineUIContainer() { Child = image }); } break; case "strong": case "b": { var span = new Span() { FontWeight = FontWeights.Bold }; CreateChildren(span.Inlines, element, status); parent.Add(span); } break; case "div": case "font": case "p": case "span": { var span = new Span(); foreach (var s in ParseStyle(element.GetAttribute("style"))) switch (s.Key) { case "font-size": { var value = s.Value; double fontSize; if (value.EndsWith("px")) fontSize = double.Parse(value.Remove(value.Length - 2)); else if (value.EndsWith("%")) fontSize = 14 * double.Parse(value.Remove(value.Length - 1)) / 100; else fontSize = 14 * double.Parse(value); span.FontSize = fontSize; } break; case "font-weight": switch (s.Value) { case "bold": span.FontWeight = FontWeights.Bold; break; } break; } CreateChildren(span.Inlines, element, status); parent.Add(span); } break; case "br": if (element.NextSibling is Text nextText && nextText.Data.StartsWith("\n")) break; parent.Add(new LineBreak()); break; case "hr": parent.Add(new LineBreak()); var line = new Border() { BorderThickness = new Thickness(0, 1, 0, 0), BorderBrush = status.Foreground, Margin = new Thickness(8, 0, 8, 0), Height = 1, }; if (status.ActualWidth > 16) line.Width = status.ActualWidth - 16; status.Lines.Add(line); parent.Add(new InlineUIContainer() { Child = line }); parent.Add(new LineBreak()); break; case "iframe": // Ignore case "script": case "noscript": break; #if DEBUG default: Debug.WriteLine($"Ignore unknown tag {element.TagName}"); break; #endif } break; case Text text: parent.Add(new Run() { Text = text.Data }); break; } }