/// <summary>
/// In-lines the CSS for the current HTML
/// </summary>
/// <param name="removeStyleElements">If set to <c>true</c> the style elements are removed.</param>
/// <param name="ignoreElements">CSS selector for STYLE elements to ignore (e.g. mobile-specific styles etc.)</param>
/// <param name="css">A string containing a style-sheet for inlining.</param>
/// <param name="stripIdAndClassAttributes">True to strip ID and class attributes</param>
/// <param name="removeComments">True to remove comments, false to leave them intact</param>
/// <param name="precompiledStyles"></param>
/// <returns>Returns the html input, with styles moved to inline attributes.</returns>
public InlineResult MoveCssInline(bool removeStyleElements = false, string ignoreElements = null, string css = null, bool stripIdAndClassAttributes = false, bool removeComments = false, SortedList <string, StyleClass> precompiledStyles = null)
{
// Store the variables used for inlining the CSS
_removeStyleElements = removeStyleElements;
_stripIdAndClassAttributes = stripIdAndClassAttributes;
_ignoreElements = ignoreElements;
// Gather all of the CSS that we can work with.
var cssSourceNodes = CssSourceNodes();
var cssLinkNodes = CssLinkNodes();
var cssSources = new List <ICssSource>(ConvertToStyleSources(cssSourceNodes));
cssSources.AddRange(ConvertToStyleSources(cssLinkNodes));
cssSources.AddRange(PreMailer.ConvertToStyleSources(css));
var cssBlocks = PreMailer.GetCssBlocks(cssSources);
if (_removeStyleElements)
{
RemoveStyleElements(cssSourceNodes);
RemoveStyleElements(cssLinkNodes);
}
var joinedBlocks = PreMailer.Join(cssBlocks);
var validSelectors = CleanUnsupportedSelectors(joinedBlocks);
if (precompiledStyles != null)
{
precompiledStyles.ToList().ForEach(kvp => { validSelectors.Add(kvp.Key, kvp.Value); });
}
var elementsWithStyles = FindElementsWithStyles(validSelectors);
var mergedStyles = MergeStyleClasses(elementsWithStyles);
StyleClassApplier.ApplyAllStyles(mergedStyles);
if (_stripIdAndClassAttributes)
{
StripElementAttributes("id", "class");
}
if (removeComments)
{
var comments = _document.Descendents <IComment>().ToList();
foreach (var comment in comments)
{
comment.Remove();
}
}
var html = _document.ToHtml(new AutoSelectedMarkupFormatter(_document.Doctype));
return(new InlineResult(html, _warnings));
}
/// <summary>
/// Function to precompile a style sheet allowing it be be preserved in
/// memory for performance purposes.
/// </summary>
/// <param name="css">A string containing a style-sheet for inlining.</param>
/// <param name="warnings">A list of warnings indicating css elements that are not supported.</param>
/// <returns>A tokenized sorted list representing the css that was passed in</returns>
public static SortedList <string, StyleClass> PrecompileCssString(string css, out List <string> warnings)
{
var cssSource = new List <ICssSource>(PreMailer.ConvertToStyleSources(css));
var cssBlocks = PreMailer.GetCssBlocks(cssSource);
var joinedBlocks = PreMailer.Join(cssBlocks);
warnings = new List <string>();
var cleanJoinedBlocks = PreMailer.CleanUnsupportedSelectors(joinedBlocks, warnings);
return(cleanJoinedBlocks);
}