using System;
using System.Collections.Generic;
using System.Globalization;
using System.Web.UI;
namespace SPSolutions.SharePoint.WebControls
{
	public class SPScriptManager : Control
	{
		protected override void OnInit(EventArgs e)
		{
			base.OnInit(e);
			if (!base.DesignMode)
			{
				if (SPScriptManager.GetCurrent(this.Page) != null)
				{
					throw new Exception("Only one script manager allowed");
				}
				this.Page.Items[typeof(SPScriptManager)] = this;
			}
		}
		protected override void OnLoad(EventArgs e)
		{
			base.OnLoad(e);
		}
		protected override void Render(HtmlTextWriter writer)
		{
			base.Render(writer);
		}
		private IEnumerable<string> GetCssReferences(Control control)
		{
			List<string> list = new List<string>();
			Type type = control.GetType();
			Type typeFromHandle = typeof(SPClientCssResourceAttribute);
			object[] customAttributes = type.GetCustomAttributes(typeFromHandle, true);
			for (int i = 0; i < customAttributes.Length; i++)
			{
				SPClientCssResourceAttribute sPClientCssResourceAttribute = (SPClientCssResourceAttribute)customAttributes[i];
				list.Add(sPClientCssResourceAttribute.ClientResourceResolver.BuildResourcePath(sPClientCssResourceAttribute.ResourceName));
			}
			return list;
		}
		private IEnumerable<string> GetScriptReferences(Control control)
		{
			List<string> list = new List<string>();
			Type type = control.GetType();
			Type typeFromHandle = typeof(SPClientScriptResourceAttribute);
			object[] customAttributes = type.GetCustomAttributes(typeFromHandle, true);
			for (int i = 0; i < customAttributes.Length; i++)
			{
				SPClientScriptResourceAttribute sPClientScriptResourceAttribute = (SPClientScriptResourceAttribute)customAttributes[i];
				list.Add(sPClientScriptResourceAttribute.ClientResourceResolver.BuildResourcePath(sPClientScriptResourceAttribute.ResourceName));
			}
			return list;
		}
		public void RegisterClientCss(Control control, string styleSheet)
		{
			control.Page.ClientScript.RegisterClientScriptBlock(typeof(SPScriptManager), styleSheet, string.Format(CultureInfo.InvariantCulture, "<link rel=\"stylesheet\" type=\"text/css\" href=\"{0}\" />", new object[]
			{
				styleSheet
			}), false);
		}
		public void RegisterClientScript(Control control, string scriptPath)
		{
			control.Page.ClientScript.RegisterClientScriptInclude(typeof(SPScriptManager), scriptPath, scriptPath);
		}
		public void RegisterCssReference(Control control)
		{
			foreach (string current in this.GetCssReferences(control))
			{
				this.RegisterClientCss(this, current);
			}
		}
		public void RegisterScriptReferences(Control control)
		{
			foreach (string current in this.GetScriptReferences(control))
			{
				this.RegisterClientScript(this, current);
			}
		}
		public static SPScriptManager GetCurrent(Page page)
		{
			if (page == null)
			{
				throw new ArgumentNullException("page");
			}
			return page.Items[typeof(SPScriptManager)] as SPScriptManager;
		}
	}
}