/// <summary>
/// Adds a CSS file reference to the page's head section.
/// </summary>
/// <param name="pathToCSSFileUnderAppPath"></param>
public void AddCSSFile(CSSGroup cssGroup, string pathToCSSFileUnderAppPath, AggregateMode aggregationMode)
{
// -- add only unique items
string cssPath = pathToCSSFileUnderAppPath.Trim();
if (!isExternallyHosted(cssPath))
{
cssPath = removeBeginningSlash(cssPath);
}
CSSGroup?existingGroup = getGroupForCSSFile(cssPath, aggregationMode);
if (existingGroup == null)
{
if (aggregationMode == AggregateMode.Aggregate)
{
cssFilePaths_Aggregate[cssGroup].Add(cssPath);
}
else
{
cssFilePaths_DoNotAggregate[cssGroup].Add(cssPath);
}
}
else if (existingGroup != null && existingGroup != cssGroup)
{
throw new ArgumentException(cssPath + " has already been added to the " + existingGroup.ToString() + " CSS group");
}
} // Add AddCSSFile
/// Combines locally hosted CSS files into a single file.
/// Returns the URL of the file that was generated, or string.Empty on error
private string combineInternalCssFiles(CSSGroup cssGroup, List <string> cssFilePaths, List <EmbeddedCSSFileInfo> embeddedCssFiles)
{
if (cssFilePaths.Count == 0 && embeddedCssFiles.Count == 0)
{
return("");
}
StringBuilder outFileContents = new StringBuilder();
// -- read each internal file
foreach (string cssPath in cssFilePaths)
{
if (!isExternallyHosted(cssPath))
{
string cssFn = System.Web.Hosting.HostingEnvironment.MapPath("~/" + cssPath);
string css = System.IO.File.ReadAllText(cssFn);
outFileContents.Append(css);
outFileContents.Append(Environment.NewLine);
}
}
foreach (EmbeddedCSSFileInfo embeddedCss in embeddedCssFiles)
{
string[] embeddedNames = embeddedCss.assemblyWithEmbeddedFile.GetManifestResourceNames();
foreach (string embeddedName in embeddedNames)
{
if (embeddedName.EndsWith(embeddedCss.embeddedFilename, StringComparison.CurrentCultureIgnoreCase))
{
System.IO.Stream stream = embeddedCss.assemblyWithEmbeddedFile.GetManifestResourceStream(embeddedName);
string css = new System.IO.StreamReader(stream).ReadToEnd();
outFileContents.Append(css);
outFileContents.Append(Environment.NewLine);
break;
}
}
} // foreach
// -- the filename is based on the contents of the file
string outName = cssGroup.ToString() + "_" + outFileContents.ToString().GetHashCode().ToString();
outName = System.IO.Path.ChangeExtension(outName, ".css");
string outUrl = VirtualPathUtility.ToAbsolute("~/_system/writable/css/" + outName);
string outFn = System.Web.Hosting.HostingEnvironment.MapPath(outUrl);
if (!System.IO.Directory.Exists(System.IO.Path.GetDirectoryName(outFn)))
{
throw new System.IO.FileNotFoundException("Please ensure that the directory exists: ~/system/writable/css/");
}
if (!System.IO.File.Exists(outFn))
{
System.IO.File.WriteAllText(outFn, outFileContents.ToString(), System.Text.Encoding.UTF8);
}
return(outUrl);
}
public EmbeddedCSSFileInfo(CSSGroup group, System.Reflection.Assembly assembly, string filename)
{
cssGroup = group;
assemblyWithEmbeddedFile = assembly;
embeddedFilename = filename;
}
} // Add AddCSSFile
public void AddEmbeddedCSSFile(CSSGroup cssGroup, System.Reflection.Assembly assemblyWithEmbeddedFile, string embeddedFilename)
{
cssEmbeddedResources[cssGroup].Add(new EmbeddedCSSFileInfo(cssGroup, assemblyWithEmbeddedFile, embeddedFilename));
}
/// <summary>
/// Adds a CSS file reference to the page's head section.
/// </summary>
/// <param name="pathToCSSFileUnderAppPath"></param>
public void AddCSSFile(CSSGroup cssGroup, string pathToCSSFileUnderAppPath)
{
AddCSSFile(cssGroup, pathToCSSFileUnderAppPath, AggregateMode.Aggregate);
}
