public virtual ResourceDefinition DefineResource(string resourceType, string resourceName)
{
var definition = new ResourceDefinition(this, resourceType, resourceName);
var resources = GetResources(resourceType);
resources[resourceName] = definition;
return definition;
}
public void Style(HtmlHelper Html, TextWriter Output, ResourceDefinition Resource, string Url, string Condition, Dictionary<string, string> TagAttributes)
{
// do not write to Output directly as Styles are rendered in Zones
ResourceManager.WriteResource(Html.ViewContext.Writer, Resource, Url, Condition, TagAttributes);
}
public void Resource(TextWriter Output, ResourceDefinition Resource, string Url, string Condition, Dictionary<string, string> TagAttributes)
{
ResourceManager.WriteResource(Output, Resource, Url, Condition, TagAttributes);
}
private static TagBuilder GetTagBuilder(ResourceDefinition resource, string url)
{
var tagBuilder = new TagBuilder(resource.TagName);
tagBuilder.MergeAttributes(resource.TagBuilder.Attributes);
if (!String.IsNullOrEmpty(resource.FilePathAttributeName))
{
if (!String.IsNullOrEmpty(url))
{
if (VirtualPathUtility.IsAppRelative(url))
{
url = VirtualPathUtility.ToAbsolute(url);
}
tagBuilder.MergeAttribute(resource.FilePathAttributeName, url, true);
}
}
return tagBuilder;
}
protected virtual void ExpandDependencies(ResourceDefinition resource, RequireSettings settings, OrderedDictionary allResources)
{
if (resource == null)
{
return;
}
// Settings is given so they can cascade down into dependencies. For example, if Foo depends on Bar, and Foo's required
// location is Head, so too should Bar's location.
// forge the effective require settings for this resource
// (1) If a require exists for the resource, combine with it. Last settings in gets preference for its specified values.
// (2) If no require already exists, form a new settings object based on the given one but with its own type/name.
settings = allResources.Contains(resource)
? ((RequireSettings)allResources[resource]).Combine(settings)
: new RequireSettings { Type = resource.Type, Name = resource.Name }.Combine(settings);
if (resource.Dependencies != null)
{
var dependencies = from d in resource.Dependencies
select FindResource(new RequireSettings { Type = resource.Type, Name = d });
foreach (var dependency in dependencies)
{
if (dependency == null)
{
continue;
}
ExpandDependencies(dependency, settings, allResources);
}
}
allResources[resource] = settings;
}
public static void WriteResource(TextWriter writer, ResourceDefinition resource, string url, string condition, Dictionary<string, string> attributes)
{
if (!string.IsNullOrEmpty(condition))
{
if (condition == NotIE)
{
writer.WriteLine("<!--[if " + condition + "]>-->");
}
else
{
writer.WriteLine("<!--[if " + condition + "]>");
}
}
var tagBuilder = GetTagBuilder(resource, url);
if (attributes != null)
{
// todo: try null value
tagBuilder.MergeAttributes(attributes, true);
}
writer.WriteLine(tagBuilder.ToString(resource.TagRenderMode));
if (!string.IsNullOrEmpty(condition))
{
if (condition == NotIE)
{
writer.WriteLine("<!--<![endif]-->");
}
else
{
writer.WriteLine("<![endif]-->");
}
}
}
