protected override void Process2(ref CombinerFilterContext data)
{
// This filter will execute only if the css haven't been combined,
// since the combiner filter does the versioning as well.
// This is done for performance reasons to avoid having to traverse the
// document tree again.
if (!data.CombineJs && data.VersionOnly)
{
string versionQueryString = data.CombinerService.GetVersionQueryString(data.JsVersion,
data.SharedVersion);
if (ScriptIncludeNodes == null)
{
return;
}
var scriptNodes = ScriptIncludeNodes.ToList();
foreach (HtmlNode script in scriptNodes)
{
string src = script.Attributes["src"].Value;
string querySeparator = (src.IndexOf('?') > 0 ? "&" : "?");
script.Attributes["src"].Value += querySeparator + versionQueryString;
}
}
}
/// <summary>
/// Replaces all local script include tags on the page with a tag pointing to the combined resources
/// of the tags removed.
/// Appends the combined resources tag to the end of the document.
/// Moves all inline scripts to the end of the document.
/// Versions the resulting combined script tag (for performance reasons we're combining this operation in this filter).
/// </summary>
protected override void Process2(ref CombinerFilterContext data)
{
if (!data.CombineJs)
{
return;
}
if (ScriptIncludeNodes == null)
{
return;
}
var scriptNodes = ScriptIncludeNodes.ToList();
// Get the url pointing to the combined js of the tags removed
// We're sending only distinct urls in order to eliminate duplicate loads of the same file...
string[] combinedScriptsUrls =
data.CombinerService.GetCombinedScriptUrls(
data.RequestPath,
scriptNodes.Select(n => n.Attributes["src"].Value).Distinct().ToList(),
data.JsVersion,
data.SharedVersion,
data.CombinedResourcesUrl,
data.MinifyJs,
data.PrependCdnHostToImages);
// Remove all script include tags and insert the new combined script tag
foreach (HtmlNode script in scriptNodes)
{
// If we encounter an include script tag that also has some script in its body
// then we have to create a new script tag with that content and replace the original one with this new one
if (!string.IsNullOrEmpty(script.InnerHtml))
{
var newScript =
HtmlNode.CreateNode("<script type='text/javascript'>" + script.InnerHtml + "</script>");
script.ParentNode.ReplaceChild(newScript, script);
continue;
}
script.ParentNode.RemoveChild(script, false);
}
var body = Doc.DocumentNode.SelectSingleNode(@"//body");
var sb = new StringBuilder();
foreach (string combinedUrl in combinedScriptsUrls)
{
sb.Append("<script type='text/javascript' src='" + combinedUrl + "' ></script>");
}
// We'll use this method of appending these nodes to the doc in order to avoid
// having to keep track of the index in the collection when creating nodes explicitly;
var temp = new HtmlDocument();
temp.LoadHtml(sb.ToString());
foreach (HtmlNode n in temp.DocumentNode.ChildNodes)
{
body.AppendChild(n);
}
// Move all the inline scripts to the end of the body after the newly inserted combined script
if (InlineScriptNodes != null)
{
foreach (HtmlNode iscript in InlineScriptNodes)
{
iscript.ParentNode.RemoveChild(iscript);
body.AppendChild(iscript);
// minify it's content
//iscript.InnerHtml = data.CombinerService.MinifyJs(iscript.InnerText);
}
}
}