/// <summary>
/// Checks if the current file implements the html attribute interfaces and returns the appropriate html attributes
/// </summary>
/// <param name="file"></param>
/// <returns></returns>
private static IDictionary <string, string> GetHtmlAttributes(IClientDependencyFile file)
{
IDictionary <string, string> attributes = new Dictionary <string, string>();
var htmlAttributes = file as IHaveHtmlAttributes;
if (htmlAttributes != null)
{
var fileWithAttributes = htmlAttributes;
attributes = fileWithAttributes.HtmlAttributes;
var parsing = file as IRequiresHtmlAttributesParsing;
if (parsing != null)
{
//we need to parse the attributes into the dictionary
HtmlAttributesStringParser.ParseIntoDictionary(parsing.HtmlAttributesAsString, attributes);
}
}
//now we must ensure that the correct js/css attribute exist!
switch (file.DependencyType)
{
case ClientDependencyType.Javascript:
if (!attributes.ContainsKey("type"))
{
attributes.Add("type", "text/javascript");
}
if (attributes.ContainsKey("src"))
{
attributes.Remove("src");
}
break;
case ClientDependencyType.Css:
if (!attributes.ContainsKey("type"))
{
attributes.Add("type", "text/css");
}
if (!attributes.ContainsKey("rel"))
{
attributes.Add("rel", "stylesheet");
}
if (attributes.ContainsKey("href"))
{
attributes.Remove("href");
}
break;
default:
throw new ArgumentOutOfRangeException();
}
//just return an empty dictionary
return(attributes);
}
public void Parse_Normal_String()
{
const string attributes = "media:print";
var destination = new Dictionary <string, string>();
HtmlAttributesStringParser.ParseIntoDictionary(attributes, destination);
Assert.AreEqual(1, destination.Count);
Assert.AreEqual("print", destination.Last().Value);
Assert.AreEqual("media", destination.Last().Key);
}
public void Parse_Media_Query()
{
const string attributes = "media:(max-width:560px)";
var destination = new Dictionary <string, string>();
HtmlAttributesStringParser.ParseIntoDictionary(attributes, destination);
Assert.AreEqual(1, destination.Count);
Assert.AreEqual("(max-width:560px)", destination.Last().Value);
Assert.AreEqual("media", destination.Last().Key);
}
public void Parse_Delimited_String_With_Comma()
{
const string attributes = "media:'print, projection'";
var destination = new Dictionary <string, string>();
HtmlAttributesStringParser.ParseIntoDictionary(attributes, destination);
Assert.AreEqual(1, destination.Count);
Assert.AreEqual("print, projection", destination.Last().Value);
Assert.AreEqual("media", destination.Last().Key);
}
public void Ensure_No_Duplicates()
{
const string attributes = "defer:true,async:true";
var destination = new Dictionary <string, string>();
HtmlAttributesStringParser.ParseIntoDictionary(attributes, destination);
Assert.AreEqual(2, destination.Count);
Assert.AreEqual("defer", destination.First().Key);
Assert.AreEqual("true", destination.First().Value);
Assert.AreEqual("async", destination.Last().Key);
Assert.AreEqual("true", destination.Last().Value);
}