/// <summary>
/// Verifies if the link is valid, before processing into a link, or plain text.
/// </summary>
/// <param name="element"> The parsed inline element to render. </param>
/// <param name="context"> Persistent state. </param>
protected void CheckRenderMarkdownLink(MarkdownLinkInline element, IRenderContext context)
{
// Avoid processing when link text is empty.
if (element.Inlines.Count == 0)
{
return;
}
// Attempt to resolve references.
element.ResolveReference(Document);
if (element.Url == null)
{
// The element couldn't be resolved, just render it as text.
RenderInlineChildren(element.Inlines, context);
return;
}
foreach (MarkdownInline inline in element.Inlines)
{
if (inline is ImageInline imageInline)
{
// this is an image, create Image.
if (!string.IsNullOrEmpty(imageInline.ReferenceId))
{
imageInline.ResolveReference(Document);
}
imageInline.Url = element.Url;
RenderImage(imageInline, context);
return;
}
}
RenderMarkdownLink(element, context);
}
/// <summary>
/// Renders a link element
/// </summary>
/// <param name="inlineCollection"> The list to add to. </param>
/// <param name="element"> The parsed inline element to render. </param>
/// <param name="parent"> The container element. </param>
/// <param name="context"> Persistent state. </param>
private void RenderMarkdownLink(InlineCollection inlineCollection, MarkdownLinkInline element, TextElement parent, RenderContext context)
{
// Avoid crash when link text is empty.
if (element.Inlines.Count == 0)
{
return;
}
// Attempt to resolve references.
element.ResolveReference(_document);
if (element.Url == null)
{
// The element couldn't be resolved, just render it as text.
RenderInlineChildren(inlineCollection, element.Inlines, parent, context);
return;
}
// HACK: Superscript is not allowed within a hyperlink. But if we switch it around, so
// that the superscript is outside the hyperlink, then it will render correctly.
// This assumes that the entire hyperlink is to be rendered as superscript.
if (AllTextIsSuperscript(element) == false)
{
// Regular ol' hyperlink.
var link = new Hyperlink();
// Register the link
_linkRegister.RegisterNewHyperLink(link, element.Url);
// Remove superscripts.
RemoveSuperscriptRuns(element, insertCaret: true);
// Render the children into the link inline.
var childContext = context.Clone();
childContext.WithinHyperlink = true;
RenderInlineChildren(link.Inlines, element.Inlines, link, childContext);
context.TrimLeadingWhitespace = childContext.TrimLeadingWhitespace;
// Add it to the current inlines
inlineCollection.Add(link);
}
else
{
// THE HACK IS ON!
// Create a fake superscript element.
var fakeSuperscript = new SuperscriptTextInline
{
Inlines = new List <MarkdownInline>
{
element
}
};
// Remove superscripts.
RemoveSuperscriptRuns(element, insertCaret: false);
// Now render it.
RenderSuperscriptRun(inlineCollection, fakeSuperscript, parent, context);
}
}
/// <summary>
/// Verifies if the link is valid, before processing into a link, or plain text.
/// </summary>
/// <param name="element"> The parsed inline element to render. </param>
/// <param name="context"> Persistent state. </param>
protected void CheckRenderMarkdownLink(MarkdownLinkInline element, IRenderContext context)
{
// Avoid processing when link text is empty.
if (element.Inlines.Count == 0)
{
return;
}
// Attempt to resolve references.
element.ResolveReference(Document);
if (element.Url == null)
{
// The element couldn't be resolved, just render it as text.
RenderInlineChildren(element.Inlines, context);
}
else
{
// Url is valid, create Link.
RenderMarkdownLink(element, context);
}
}
/// <summary>
/// Renders a link element.
/// </summary>
/// <param name="inlineCollection"> The list to add to. </param>
/// <param name="element"> The parsed inline element to render. </param>
/// <param name="parent"> The container element. </param>
/// <param name="context"> Persistent state. </param>
private void RenderMarkdownLink(InlineCollection inlineCollection, MarkdownLinkInline element, TextElement parent, RenderContext context)
{
// Avoid crash when link text is empty.
if (element.Inlines.Count == 0)
{
return;
}
// Attempt to resolve references.
element.ResolveReference(_document);
if (element.Url == null || _document.EnableHiddenLinks == false)
{
// The element couldn't be resolved, just render it as text.
RenderInlineChildren(inlineCollection, element.Inlines, parent, context);
return;
}
// Regular ol' hyperlink.
var link = new Hyperlink();
// Register the link
_linkRegister.RegisterNewHyperLink(link, element.Url);
// Render the children into the link inline.
var childContext = context.Clone();
childContext.WithinHyperlink = true;
if (LinkForeground != null)
{
link.Foreground = LinkForeground;
}
RenderInlineChildren(link.Inlines, element.Inlines, link, childContext);
context.TrimLeadingWhitespace = childContext.TrimLeadingWhitespace;
// Add it to the current inlines
inlineCollection.Add(link);
}
