public StyleClass ParseStyleClass(string className, string style)
{
StyleClass sc = new StyleClass();
sc.Name = className;
this.FillStyleClass(sc, className, style);
return sc;
}
/// <summary>
/// Merges the specified style class, with this instance. Styles on this instance are not overriden by duplicates in the specified styleClass.
/// </summary>
/// <param name="styleClass">The style class.</param>
/// <param name="canOverwrite">if set to <c>true</c> [can overwrite].</param>
public void Merge(StyleClass styleClass, bool canOverwrite)
{
foreach (var item in styleClass.Attributes)
{
if (!this.Attributes.ContainsKey(item.Key))
{
this.Attributes.Add(item.Key, item.Value);
}
else if (canOverwrite)
{
this.Attributes[item.Key] = item.Value;
}
}
}
/// <summary>
/// Fills the style class.
/// </summary>
/// <param name="s">The style block.</param>
private void FillStyleClass(string s)
{
StyleClass sc = null;
string[] parts = s.Split('{');
string styleName = CleanUp(parts[0]).Trim();
if (this._scc.ContainsKey(styleName))
{
sc = this._scc[styleName];
this._scc.Remove(styleName);
}
else
{
sc = new StyleClass();
}
this.FillStyleClass(sc, styleName, parts[1]);
this._scc.Add(sc.Name, sc);
}
/// <summary>
/// Fills the style class.
/// </summary>
/// <param name="sc">The style class.</param>
/// <param name="styleName">Name of the style.</param>
/// <param name="style">The styles.</param>
private void FillStyleClass(StyleClass sc, string styleName, string style)
{
sc.Name = styleName;
string[] atrs = CleanUp(style).Split(';');
foreach (string a in atrs)
{
if (a.Contains(":"))
{
string _key = a.Split(':')[0].Trim();
if (sc.Attributes.ContainsKey(_key))
{
sc.Attributes.Remove(_key);
}
sc.Attributes.Add(_key, a.Split(':')[1].Trim().ToLower());
}
}
}
/// <summary>
/// Moves the CSS embedded in the specified htmlInput to inline style attributes.
/// </summary>
/// <param name="htmlInput">The HTML input.</param>
/// <param name="removeStyleElements">if set to <c>true</c> the style elements are removed.</param>
/// <returns>Returns the html input, with styles moved to inline attributes.</returns>
public static string MoveCssInline(string htmlInput, bool removeStyleElements)
{
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(htmlInput);
var styleNodes = doc.DocumentNode.SelectNodes("//style");
if (styleNodes == null)
{
return(htmlInput); // no styles to move
}
foreach (var style in styleNodes)
{
if (style.Attributes["id"] != null && !String.IsNullOrWhiteSpace(style.Attributes["id"].Value) && style.Attributes["id"].Value.Equals("mobile", StringComparison.InvariantCultureIgnoreCase))
{
continue;
}
CssParser cssParser = new CssParser();
string cssBlock = style.InnerHtml;
cssParser.AddStyleSheet(cssBlock);
foreach (var item in cssParser.Styles)
{
//RWM: Just because one style fails to merge doesn't mean they all should.
try
{
var styleClass = item.Value;
var elements = doc.DocumentNode.QuerySelectorAll(styleClass.Name);
foreach (var element in elements)
{
HtmlAttribute styleAttribute = element.Attributes["style"];
if (styleAttribute == null)
{
element.Attributes.Add("style", String.Empty);
styleAttribute = element.Attributes["style"];
}
StyleClass sc = cssParser.ParseStyleClass("dummy", styleAttribute.Value);
sc.Merge(styleClass, false);
styleAttribute.Value = sc.ToString();
}
}
catch (Exception ex)
{
System.Diagnostics.Trace.Fail(ex.Message);
}
}
if (removeStyleElements)
{
style.Remove();
}
}
return(doc.DocumentNode.OuterHtml);
}
