/// <summary>
/// Gets the loader from the HttpContextBase
/// </summary>
/// <param name="http"></param>
/// <returns></returns>
public static DependencyRenderer GetLoader(this HttpContextBase http)
{
bool isNew;
var instance = DependencyRenderer.TryCreate(http, out isNew);
return(instance);
}
/// <summary>
/// Gets the loader from the ControllerContext
/// </summary>
/// <param name="cc"></param>
/// <returns></returns>
public static DependencyRenderer GetLoader(this ControllerContext cc)
{
bool isNew;
var instance = DependencyRenderer.TryCreate(cc.HttpContext, out isNew);
return(instance);
}
/// <summary>
/// Gets the loader from the ViewContext
/// </summary>
/// <param name="vc"></param>
/// <returns></returns>
public static DependencyRenderer GetLoader(this ViewContext vc)
{
bool isNew;
var instance = DependencyRenderer.TryCreate(vc.HttpContext, out isNew);
return(instance);
}
private void PerformReplacements()
{
var output = _writer.ToString();
//do replacements
var replaced = DependencyRenderer.GetInstance(_httpContext).ParseHtmlPlaceholders(output);
//write to original
_originalWriter.Write(replaced);
}
/// <summary>
/// Checks if a loader already exists, if it does, it returns it, otherwise it will
/// create a new one in the control specified.
/// isNew will be true if a loader was created, otherwise false if it already existed.
/// </summary>
/// <param name="ctx"></param>
/// <param name="isNew"></param>
/// <returns></returns>
internal static DependencyRenderer TryCreate(HttpContextBase ctx, out bool isNew)
{
if (GetInstance(ctx) == null)
{
lock (Locker)
{
//double check
if (GetInstance(ctx) == null)
{
var loader = new DependencyRenderer(ctx);
isNew = true;
return(loader);
}
}
}
isNew = false;
return(GetInstance(ctx));
}
/// <summary>
/// Checks if a loader already exists, if it does, it returns it, otherwise it will
/// create a new one in the control specified.
/// isNew will be true if a loader was created, otherwise false if it already existed.
/// </summary>
/// <param name="ctx"></param>
/// <param name="isNew"></param>
/// <returns></returns>
internal static DependencyRenderer TryCreate(HttpContextBase ctx, out bool isNew)
{
if (Instance(ctx) == null)
{
lock (Locker)
{
//double check
if (Instance(ctx) == null)
{
var loader = new DependencyRenderer(ctx);
isNew = true;
return loader;
}
}
}
isNew = false;
return Instance(ctx);
}
/// <summary>
/// Updates the html js/css templates rendered temporarily by the controls into real js/css html tags.
/// </summary>
/// <param name="html"></param>
/// <returns></returns>
/// <remarks>
/// This will also validate whether the rogue script handler should run and if so does.
/// </remarks>
public string UpdateOutputHtml(string html)
{
//first we need to check if this is MVC!
if (CurrentContext.CurrentHandler is MvcHandler)
{
//parse the html output with the renderer
var r = DependencyRenderer.GetInstance(CurrentContext);
if (r != null)
{
var output = r.ParseHtmlPlaceholders(html);
//get the rogue filter going
if (_rogueFileFilter.CanExecute())
{
output = _rogueFileFilter.UpdateOutputHtml(output);
}
return(output);
}
}
return(html);
}
