public static void UpdateWith(this TextBlock textBlock, string htmlInput, IParamParser paramParser)
{
var tree = new HtmlTagTree(paramParser, _builtinTags);
tree.BuildFrom(htmlInput);
// update textbox with inline elements according to syntax tree items
var context = new InlineCreationContext();
foreach (var tag in tree.GetTags())
{
switch (_builtinTags[tag.ID].Flags)
{
case HTMLFlag.TextFormat:
context.UpdateStyle(tag);
break;
case HTMLFlag.Element:
var inline = tag.CreateInline(textBlock, context);
textBlock.Inlines.Add(inline);
break;
}
}
}
private Inline CreateInlineInternal(TextBlock textBlock, InlineCreationContext currentStateType)
{
switch (Name)
{
case "br":
return(new LineBreak());
case "binding":
case "text":
Inline result;
if (Name == "binding")
{
result = new Bold(new Run("{Binding}"));
if (Contains("path") && (textBlock.DataContext != null))
{
var dataContext = textBlock.DataContext;
var propertyName = _variables["path"];
var property = dataContext.GetType().GetProperty(propertyName);
if (property != null && property.CanRead == true)
{
var value = property.GetValue(dataContext, null);
result = new Run(value?.ToString() ?? "");
}
}
}
else
{
result = new Run(_variables["value"]);
}
if (currentStateType.SubScript)
{
result.SetCurrentValue(Typography.VariantsProperty, FontVariants.Subscript);
}
if (currentStateType.SuperScript)
{
result.SetCurrentValue(Typography.VariantsProperty, FontVariants.Superscript);
}
if (currentStateType.Bold)
{
result = new Bold(result);
}
if (currentStateType.Italic)
{
result = new Italic(result);
}
if (currentStateType.Underline)
{
result = new Underline(result);
}
if (currentStateType.Foreground.HasValue)
{
result.Foreground = new SolidColorBrush(currentStateType.Foreground.Value);
}
return(result);
case "img":
if (!Contains("source"))
{
return(new Run());
}
var width = double.NaN;
if (Contains("width") && double.TryParse(_variables["width"], out var internal_width))
{
width = internal_width;
}
var height = double.NaN;
if (Contains("height") && double.TryParse(_variables["height"], out var internal_height))
{
height = internal_height;
}
if (!Uri.TryCreate(_variables["source"], UriKind.RelativeOrAbsolute, out var uri))
{
return(new Run());
}
var bitmap = new BitmapImage
{
CacheOption = BitmapCacheOption.OnLoad
};
bitmap.BeginInit();
bitmap.UriSource = uri;
bitmap.EndInit();
// TODO fetch and apply style
var image = new Image
{
Source = bitmap,
Width = width,
Height = height
};
if (Contains("href"))
{
return(TryWrapInHyperLink(new InlineUIContainer(image), _variables["href"]));
}
return(new InlineUIContainer(image));
default:
return(new Run());
}
}
public Inline CreateInline(TextBlock textBlock, InlineCreationContext currentStateType)
{
var result = CreateInlineInternal(textBlock, currentStateType);
return(TryWrapInHyperLink(result, currentStateType.HyperLink?.Trim('\"')));
}