protected override void RenderUnderlineRun(UnderlineTextInline element, IRenderContext context)
{
var localContext = context as InlineRenderContext;
if (localContext == null)
{
throw new RenderContextIncorrectException();
}
Span underlineSpan = new Span
{
TextDecorations = TextDecorations.Underline
};
var childContext = new InlineRenderContext(underlineSpan.Inlines, context)
{
Parent = underlineSpan,
WithinItalics = true
};
// Render the children into the italic inline.
RenderInlineChildren(element.Inlines, childContext);
// Add it to the current inlines
localContext.InlineCollection.Add(underlineSpan);
}
/// <summary>
/// Renders an underlined run element.
/// </summary>
/// <param name="element"> The parsed inline element to render. </param>
/// <param name="context"> Persistent state. </param>
protected override void RenderUnderlineRun(UnderlineTextInline element, IRenderContext context)
{
if (!(context is InlineRenderContext localContext))
{
throw new RenderContextIncorrectException();
}
// Create the text run
var boldSpan = new Span
{
TextDecorations = TextDecorations.Underline
};
var childContext = new InlineRenderContext(boldSpan.Inlines, context)
{
Parent = boldSpan,
WithinUnderline = true
};
// Render the children into the bold inline.
RenderInlineChildren(element.Inlines, childContext);
// Add it to the current inlines
localContext.InlineCollection.Add(boldSpan);
}
private void RenderUnderlineRun(InlineCollection inlineCollection, UnderlineTextInline element, RenderContext context)
{
Span underlineSpan = new Span
{
TextDecorations = TextDecorations.Underline,
};
// Render the children into the bold inline.
RenderInlineChildren(underlineSpan.Inlines, element.Inlines, underlineSpan, context);
inlineCollection.Add(underlineSpan);
}
static Common()
{
BoldItalicTextInline.AddTripChars(_triggerList);
BoldTextInline.AddTripChars(_triggerList);
ItalicTextInline.AddTripChars(_triggerList);
MarkdownLinkInline.AddTripChars(_triggerList);
HyperlinkInline.AddTripChars(_triggerList);
StrikethroughTextInline.AddTripChars(_triggerList);
CodeInline.AddTripChars(_triggerList);
ImageInline.AddTripChars(_triggerList);
UnderlineTextInline.AddTripChars(_triggerList);
// Create an array of characters to search against using IndexOfAny.
_tripCharacters = _triggerList.Select(trigger => trigger.FirstChar).Distinct().ToArray();
}
/// <summary>
/// Finds the next inline element by matching trip chars and verifying the match.
/// </summary>
/// <param name="markdown"> The markdown text to parse. </param>
/// <param name="start"> The position to start parsing. </param>
/// <param name="end"> The position to stop parsing. </param>
/// <param name="ignoreLinks"> Indicates whether to parse links. </param>
/// <returns>Returns the next element.</returns>
private static InlineParseResult FindNextInlineElement(string markdown, int start, int end, bool ignoreLinks)
{
// Search for the next inline sequence.
for (int pos = start; pos < end; pos++)
{
// IndexOfAny should be the fastest way to skip characters we don't care about.
pos = markdown.IndexOfAny(_tripCharacters, pos, end - pos);
if (pos < 0)
{
break;
}
// Find the trigger(s) that matched.
char currentChar = markdown[pos];
foreach (InlineTripCharHelper currentTripChar in _triggerList)
{
// Check if our current char matches the suffix char.
if (currentChar == currentTripChar.FirstChar)
{
// Don't match if the previous character was a backslash.
if (pos > start && markdown[pos - 1] == '\\')
{
continue;
}
// If we are here we have a possible match. Call into the inline class to verify.
InlineParseResult parseResult = null;
switch (currentTripChar.Method)
{
case InlineParseMethod.BoldItalic:
parseResult = BoldItalicTextInline.Parse(markdown, pos, end);
break;
case InlineParseMethod.Bold:
parseResult = BoldTextInline.Parse(markdown, pos, end);
break;
case InlineParseMethod.Italic:
parseResult = ItalicTextInline.Parse(markdown, pos, end);
break;
case InlineParseMethod.MarkdownLink:
if (!ignoreLinks)
{
parseResult = MarkdownLinkInline.Parse(markdown, pos, end);
}
break;
case InlineParseMethod.AngleBracketLink:
if (!ignoreLinks)
{
parseResult = HyperlinkInline.ParseAngleBracketLink(markdown, pos, end) ??
EmojiInline.ParseAngleBracketLink(markdown, pos, end);
}
break;
case InlineParseMethod.Url:
if (!ignoreLinks)
{
parseResult = HyperlinkInline.ParseUrl(markdown, pos, end);
}
break;
case InlineParseMethod.PartialLink:
if (!ignoreLinks)
{
parseResult = HyperlinkInline.ParsePartialLink(markdown, pos, end);
}
break;
case InlineParseMethod.Email:
if (!ignoreLinks)
{
parseResult = HyperlinkInline.ParseEmailAddress(markdown, start, pos, end);
}
break;
case InlineParseMethod.Strikethrough:
parseResult = StrikethroughTextInline.Parse(markdown, pos, end);
break;
case InlineParseMethod.Code:
parseResult = CodeInline.Parse(markdown, pos, end);
break;
case InlineParseMethod.Underline:
parseResult = UnderlineTextInline.Parse(markdown, pos, end);
break;
}
if (parseResult != null)
{
return(parseResult);
}
}
}
}
// If we didn't find any elements we have a normal text block.
// Let us consume the entire range.
return(new InlineParseResult(TextRunInline.Parse(markdown, start, end), start, end));
}
/// <summary> /// Renders a text run element. /// </summary> /// <param name="element"> The parsed inline element to render. </param> /// <param name="context"> Persistent state. </param> protected abstract void RenderUnderlineRun(UnderlineTextInline element, IRenderContext context);