/*
 * Author : Hibri Marzook
 * www.hibri.net
 
*/  
using System;
using System.Collections.Generic;
using System.Data;
using System.Configuration;
using System.IO;
using System.Text;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.Adapters;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

/// <summary>
/// Summary description for SiteMapPathAdapter
/// </summary>
public class SiteMapPathAdapter : WebControlAdapter
{
    public SiteMapPathAdapter() {
        //
        // TODO: Add constructor logic here
        //
    }

    protected override void RenderBeginTag(HtmlTextWriter writer) {
        SiteMapPath siteMapPath = Control as SiteMapPath;

        if (!String.IsNullOrEmpty(siteMapPath.Attributes["CssSelectorId"])) {
            writer.AddAttribute("id", siteMapPath.Attributes["CssSelectorId"]);

        }
        if (!String.IsNullOrEmpty(siteMapPath.CssClass)) {
            writer.AddAttribute("class", siteMapPath.CssClass);
        }


        if (!String.IsNullOrEmpty(siteMapPath.Attributes["Container"])) {

            writer.RenderBeginTag(siteMapPath.Attributes["Container"]);
        }
        else {
            writer.RenderBeginTag(HtmlTextWriterTag.Div);
        }
    }

    protected override void RenderContents(HtmlTextWriter writer) {
        SiteMapPath siteMapPath = Control as SiteMapPath;
        SiteMapProvider provider = siteMapPath.Provider;
        //Get current node and all ancestors
        SiteMapNode current = provider.GetCurrentNodeAndHintAncestorNodes(-1);
        //use a Stack to render nodes. 
        //since we start from the current node, and we need render from the parent downwards

        Stack<string> nodeStack = new Stack<string>();

        #region Render the nodes

        StringBuilder linkBuilder = new StringBuilder();
        XhtmlTextWriter xwri = new XhtmlTextWriter(new StringWriter(linkBuilder));
        #region Render the current node
        if (siteMapPath.RenderCurrentNodeAsLink) {

            xwri.AddAttribute("href", current.Url);
            if (String.IsNullOrEmpty(current.Description)) {
                xwri.AddAttribute("alt", current.Title);
            }
            else {
                xwri.AddAttribute("alt", current.Description);
            }

            xwri.RenderBeginTag(HtmlTextWriterTag.A);
            if (!String.IsNullOrEmpty(current.Title)) {
                xwri.Write(current.Title);
            }
            else {
                xwri.Write("&nbsp;");
            }
            xwri.RenderEndTag();

        }
        else {
            if (!String.IsNullOrEmpty(current.Title)) {
                xwri.Write(current.Title);
            }
            else {
                xwri.Write("&nbsp;");
            }
        }




        xwri.Flush();
        xwri.Close();
        nodeStack.Push(linkBuilder.ToString());
        #endregion


        #region Render the current node's parents
        SiteMapNode parent = current.ParentNode;
        while (parent != null) {
            linkBuilder = new StringBuilder();
            xwri = new XhtmlTextWriter(new StringWriter(linkBuilder));


            xwri.AddAttribute("href", parent.Url);
            if (String.IsNullOrEmpty(parent.Description)) {
                xwri.AddAttribute("alt", parent.Title);
            }
            else {
                xwri.AddAttribute("alt", parent.Description);
            }
            xwri.RenderBeginTag(HtmlTextWriterTag.A);
            if (!String.IsNullOrEmpty(parent.Title)) {
                xwri.Write(parent.Title);
            }
            else {
                xwri.Write("&nbsp;");
            }

            xwri.RenderEndTag();
            xwri.Flush();
            xwri.Close();
            nodeStack.Push(linkBuilder.ToString());
            parent = parent.ParentNode;

        }
        #endregion

        //ok now we have the stack.render the stack with the separator
        string pathItem;
        while (nodeStack.Count > 0) {
            pathItem = nodeStack.Pop();
            writer.Write(pathItem);


            //if there is a next item render the separator
            if (nodeStack.Count > 0) {
                writer.WriteEncodedText(" " + siteMapPath.PathSeparator + "");
            }
        }
    }

    #endregion



}