public IList <string> GetCssStyles()
{
var attrs = _op.Attributes;
var result = new List <string>();
Action <InlineStyleType, string, string> convert =
(converter, value, name) =>
{
if (!String.IsNullOrEmpty(value))
{
if (converter != null)
{
var converted = converter(value, _op);
if (!String.IsNullOrEmpty(converted))
{
result.Add(converted);
}
}
else
{
result.Add($"{name}:{value}");
}
}
};
var iss = _options.InlineStyles;
convert(iss?.Color ?? DEFAULT_INLINE_STYLES.Color,
attrs.Color, "color");
if (iss != null ||
!_options.AllowBackgroundClasses.HasValue ||
!_options.AllowBackgroundClasses.Value)
{
convert(iss?.Background ?? DEFAULT_INLINE_STYLES.Background,
attrs.Background, "background-color");
}
if (iss != null)
{
if (attrs.Indent.HasValue)
{
convert(iss.Indent ?? DEFAULT_INLINE_STYLES.Indent,
attrs.Indent.Value.ToString(), "indent");
}
convert(iss.Align ?? DEFAULT_INLINE_STYLES.Align,
AlignConverter.GetStringValue(attrs.Align), "text-align");
convert(iss.Direction ?? DEFAULT_INLINE_STYLES.Direction,
DirectionConverter.GetStringValue(attrs.Direction), "direction");
convert(iss.Font ?? DEFAULT_INLINE_STYLES.Font,
attrs.Font, "font-family");
convert(iss.Size ?? DEFAULT_INLINE_STYLES.Size,
attrs.Size, "size");
}
return(result);
}
public IList <string> GetCssClasses()
{
var attrs = _op.Attributes;
if (_options.InlineStyles != null)
{
return(new string[0]);
}
var classes = new List <string>();
if (attrs.Indent > 0)
{
classes.Add(PrefixClass($"indent-{attrs.Indent.Value}"));
}
if (attrs.Align.HasValue)
{
classes.Add(PrefixClass($"align-{AlignConverter.GetStringValue(attrs.Align)}"));
}
if (attrs.Direction.HasValue)
{
string dirnValue = DirectionConverter.GetStringValue(attrs.Direction);
classes.Add(PrefixClass($"direction-{dirnValue}"));
}
if (!String.IsNullOrEmpty(attrs.Font))
{
classes.Add(PrefixClass($"font-{attrs.Font}"));
}
if (!String.IsNullOrEmpty(attrs.Size))
{
classes.Add(PrefixClass($"size-{attrs.Size}"));
}
if (_options.AllowBackgroundClasses == true &&
!String.IsNullOrEmpty(attrs.Background) &&
OpAttributeSanitizer.IsValidColorLiteral(attrs.Background))
{
classes.Add(PrefixClass($"background-{attrs.Background}"));
}
if (_op.IsFormula())
{
classes.Add(PrefixClass("formula"));
}
if (_op.IsVideo())
{
classes.Add(PrefixClass("video"));
}
if (_op.IsImage())
{
classes.Add(PrefixClass("image"));
}
return(classes);
}
public static OpAttributes Sanitize(JToken dirtyAttrs)
{
var cleanAttrs = new OpAttributes();
if (dirtyAttrs == null || dirtyAttrs.Type != JTokenType.Object)
{
return(cleanAttrs);
}
var font = dirtyAttrs.GetStringValue("font");
if (!String.IsNullOrEmpty(font) && IsValidFontName(font))
{
cleanAttrs.Font = font;
}
var size = dirtyAttrs.GetStringValue("size");
if (!String.IsNullOrEmpty(size) && IsValidSize(size))
{
cleanAttrs.Size = size;
}
var link = dirtyAttrs.GetStringValue("link");
if (!String.IsNullOrEmpty(link))
{
cleanAttrs.Link = UrlHelpers.Sanitize(link);
}
var target = dirtyAttrs.GetStringValue("target");
if (!String.IsNullOrEmpty(target) && IsValidTarget(target))
{
cleanAttrs.Target = target;
}
cleanAttrs.Script = ScriptConverter.GetEnumValue(
dirtyAttrs.GetStringValue("script"));
cleanAttrs.List = ListConverter.GetEnumValue(
dirtyAttrs.GetStringValue("list"));
var header = dirtyAttrs.GetIntValue("header");
if (header.HasValue && header.Value > 0)
{
cleanAttrs.Header = Math.Min(header.Value, 6);
}
cleanAttrs.Align = AlignConverter.GetEnumValue(
dirtyAttrs.GetStringValue("align"));
cleanAttrs.Direction = DirectionConverter.GetEnumValue(
dirtyAttrs.GetStringValue("direction"));
var indent = dirtyAttrs.GetIntValue("indent");
if (indent.HasValue)
{
cleanAttrs.Indent = Math.Min((int)indent.Value, 30);
}
var width = dirtyAttrs.GetStringValue("width");
if (!String.IsNullOrEmpty(width) && IsValidWidth(width))
{
cleanAttrs.Width = width;
}
cleanAttrs.Bold = dirtyAttrs.GetBoolValue("bold");
cleanAttrs.Italic = dirtyAttrs.GetBoolValue("italic");
cleanAttrs.Underline = dirtyAttrs.GetBoolValue("underline");
cleanAttrs.Strike = dirtyAttrs.GetBoolValue("strike");
cleanAttrs.Code = dirtyAttrs.GetBoolValue("code");
cleanAttrs.Blockquote = dirtyAttrs.GetBoolValue("blockquote");
cleanAttrs.CodeBlock = dirtyAttrs.GetBoolValue("code-block");
cleanAttrs.RenderAsBlock = dirtyAttrs.GetBoolValue("renderAsBlock");
cleanAttrs.Background = GetColour(dirtyAttrs.GetStringValue("background"));
cleanAttrs.Color = GetColour(dirtyAttrs.GetStringValue("color"));
var mentions = dirtyAttrs.GetBoolValue("mentions");
var mentionToken = dirtyAttrs["mention"];
if (mentionToken != null)
{
var mention = mentionToken.Value <JObject>();
if (mentions.HasValue && mentions.Value && mention != null)
{
var sanitizedMention = MentionSanitizer.Sanitize(mention);
if (sanitizedMention.AnySet)
{
cleanAttrs.Mentions = true;
cleanAttrs.Mention = sanitizedMention;
}
}
}
foreach (var kv in (JObject)dirtyAttrs)
{
if (s_sanitizedAttributes.Contains(kv.Key))
{
continue;
}
if (cleanAttrs.CustomAttributes == null)
{
cleanAttrs.CustomAttributes = new Dictionary <string, JToken>();
}
cleanAttrs.CustomAttributes.Add(kv.Key, kv.Value);
}
return(cleanAttrs);
}