using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Microsoft.SharePoint.Publishing;
using Microsoft.SharePoint;
using Microsoft.SharePoint.Publishing.Navigation;
using Telerik.WebControls;

namespace TestWebApp.ServerControls
{
	[DefaultProperty("Text")]
	[ToolboxData("<{0}:CustomMossRadMenuControl runat=server></{0}:CustomMossRadMenuControl>")]
	public class CustomMossRadMenuControl : WebControl, INamingContainer
	{
		protected override void CreateChildControls()
		{
			//Get the root publishingweb web for the site
			PublishingWeb rootWeb = PublishingWeb.GetPublishingWeb(SPContext.Current.Site.RootWeb);

			//Get the URL of the default page in the web
			string defaultPageUrl = rootWeb.DefaultPage.ServerRelativeUrl;

			//find the item in the PSMP
			PortalListItemSiteMapNode smnHome = (PortalListItemSiteMapNode)PortalSiteMapProvider.CurrentNavSiteMapProviderNoEncode.FindSiteMapNode(defaultPageUrl);

			//initialize the RadMenu
			RadMenu menu = new RadMenu();
			menu.ID = "MainMenu";

			//double-check this path to make sure it matches you're installation
			menu.RadControlsDir = "/_wpresources/RadMenu.Net2/4.3.2.0__bbe59a8ad3533e68/RadControls";
			menu.Skin = "Outlook";

			//Set the client-side clicked event handler
			menu.OnClientItemClicked = "MainMenu_RadMenuItemClicked";

			//create the first menu item for the default (home) page
			RadMenuItem rmiHome = new RadMenuItem();
			rmiHome.NavigateUrl = smnHome.Url;
			rmiHome.Text = smnHome.Title;
			rmiHome.Attributes.Add("PageGuid", smnHome.UniqueId.ToString("N"));
			rmiHome.Attributes.Add("WebGuid", smnHome.WebId.ToString("N"));

			//Get the SPListItem for the PortalListItemSiteMapNode, retreive a custom field value,
			//and populate the menu item's tooltip
			SPListItem pageItem = getListItemFromPortalSiteMapNode(smnHome);
			//rmiHome.ToolTip =
			//	pageItem.Fields["MenuItemToolTip"].GetFieldValueAsText(pageItem["MenuItemToolTip"]);

			menu.Items.Add(rmiHome);

			//iterate through each one of the pages and subsites and create menu items for them
			foreach (SiteMapNode smnTopLevelItem in smnHome.ParentNode.ChildNodes)
			{
				RadMenuItem rmiTopLevelItem = createMenuItem(smnTopLevelItem);

				//if the current sitemap has children, create a submenu for it
				if (smnTopLevelItem.HasChildNodes)
				{
					foreach (SiteMapNode smnChildItem in smnTopLevelItem.ChildNodes)
					{
						RadMenuItem rmiChildItem = createMenuItem(smnChildItem);
						rmiTopLevelItem.Items.Add(rmiChildItem);
					}
				}

				menu.Items.Add(rmiTopLevelItem);
			}

			this.Controls.Add(menu);

			//create the client-side script for the RadMenuItemClicked event handler
			StringBuilder sbScript = new StringBuilder();
			sbScript.Append(Environment.NewLine + "<script language=\"javascript\">");
			sbScript.Append(Environment.NewLine + "function MainMenu_RadMenuItemClicked(sender, eventArgs)");
			sbScript.Append(Environment.NewLine + "{");
			sbScript.Append(Environment.NewLine + "var pageGuid = eventArgs.Item.GetAttribute(\"PageGuid\");");
			sbScript.Append(Environment.NewLine + "var webGuid = eventArgs.Item.GetAttribute(\"WebGuid\");");
			sbScript.Append(Environment.NewLine + "alert(\"WebGuid:\" + webGuid + \" PageGuid:\" + pageGuid);");
			sbScript.Append(Environment.NewLine + "}");
			sbScript.Append(Environment.NewLine + "</script>");

			this.Page.ClientScript.RegisterStartupScript(typeof(string), "RadMenu_MainMenu_RadMenuItemClicked", sbScript.ToString());
		}

		/// <summary>
		/// Create a RadMenuItem from a SiteMapNode
		/// </summary>
		/// <param name="siteMapNode">SiteMapNode used to create RadMenuItem </param>
		/// <returns>RadMenuItem</returns>
		private RadMenuItem createMenuItem(SiteMapNode siteMapNode)
		{
			RadMenuItem menuItem = new RadMenuItem();
			menuItem.NavigateUrl = siteMapNode.Url;
			menuItem.Text = siteMapNode.Title;

			SPListItem listItem = null;

			//if the SiteMapNode is the default page, it will be a PortalWebSiteMapNode
			if (siteMapNode is PortalWebSiteMapNode)
				listItem = getListItemFromPortalSiteMapNode((PortalWebSiteMapNode)siteMapNode);

			if (siteMapNode is PortalListItemSiteMapNode)
				listItem = getListItemFromPortalSiteMapNode((PortalListItemSiteMapNode)siteMapNode);

			//create the custom attributes on the list item
			if (listItem != null)
			{
				menuItem.Attributes.Add("PageGuid", listItem.UniqueId.ToString("N"));
				menuItem.Attributes.Add("WebGuid", listItem.Web.ID.ToString("N"));
				menuItem.ToolTip = listItem.Fields["MenuItemToolTip"].GetFieldValueAsText(listItem["MenuItemToolTip"]);
			}
			else
			{
				menuItem.Attributes.Add("PageGuid", string.Empty);
				menuItem.Attributes.Add("WebGuid", string.Empty);
				menuItem.ToolTip = siteMapNode.Title;
			}

			return menuItem;
		}

		private SPListItem getListItemFromPortalSiteMapNode(PortalListItemSiteMapNode siteMapNode)
		{
			SPWeb web = SPContext.Current.Site.AllWebs[siteMapNode.WebId];
			PublishingWeb pubWeb = PublishingWeb.GetPublishingWeb(web);
			SPListItem pageItem = pubWeb.PagesList.Items[siteMapNode.UniqueId];
			return pageItem;
		}

		private SPListItem getListItemFromPortalSiteMapNode(PortalWebSiteMapNode siteMapNode)
		{
			SPWeb web = SPContext.Current.Site.AllWebs[siteMapNode.WebId];
			PublishingWeb pubWeb = PublishingWeb.GetPublishingWeb(web);
			SPListItem pageItem = null;
			if (pubWeb.DefaultPage != null)
				pageItem = pubWeb.PagesList.Items[pubWeb.DefaultPage.Item.UniqueId];
			return pageItem;
		}
	}
}