Hyperlink Manager "http://" for external links

Question

When accessing Hyperlink Manager from a Rich Text field, the default value of the "URL" field displayed on the modal is "http://". The code responsible for setting this value is hard-coded inside of "Telerik.Web.UI.dll" file. Would you know if it is possible to change that default value and how to achieve that?

Sitecore 9.0.2 (rev. 180604)

Telerik.Web.UI.dll line 428060

if(currentLink.name&&currentLink.name.trim()!="") // "anchor"
        {
            this._anchorName.value=currentLink.name;
            this._linkIdAnchor.value=currentId;
            this._tab.set_selectedIndex(1);
            return;
        }

        var href="http://"; //"link"

        if(currentLink.getAttribute("href")) {
            href=currentHref;
        }

        this._linkUrl.value=href;
        this._loadLinkTarget();
        this._linkTooltip.value=currentLink.title;
        this._linkIdLink.value=currentId;

        this._tab.set_selectedIndex(0);

Thanks

Answer 1

Assuming you want to ensure that all links inside rich text fields are https:// you could do the following:

public class EnsureHttpsInRichtextContent
{
    public void Process(SaveRichTextContentArgs args)
    {
        Regex regex = new Regex("http://", RegexOptions.IgnoreCase);
        args.Content = regex.Replace(args.Content, "https://");
    }
}

Add this to your configuration:

<sitecore>
 <pipelines>
  <saveRichTextContent>
    <processor type="MyAssembly.EnsureHttpsInRichtextContent, MyAssembly" />
  </saveRichTextContent>
 </pipelines>
</sitecore>

If you want to limit this to external links, have a look how to determine external links in this method:

 Sitecore.Shell.Controls.RichTextEditor.Pipelines.SaveRichTextContent.ProtectExternalLink, Sitecore.Client