CategoryNavigation.ascx.cs :  » Web-Frameworks » nopCommerce » NopSolutions » NopCommerce » Web » Modules » C# / CSharp Open Source

//------------------------------------------------------------------------------
// The contents of this file are subject to the nopCommerce Public License Version 1.0 ("License"); you may not use this file except in compliance with the License.
// You may obtain a copy of the License at  http://www.nopCommerce.com/License.aspx. 
// 
// Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. 
// See the License for the specific language governing rights and limitations under the License.
// 
// The Original Code is nopCommerce.
// The Initial Developer of the Original Code is NopSolutions.
// All Rights Reserved.
// 
// Contributor(s): _______. 
//------------------------------------------------------------------------------


using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Text;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using NopSolutions.NopCommerce.BusinessLogic.Categories;
using NopSolutions.NopCommerce.BusinessLogic.Products;
using NopSolutions.NopCommerce.BusinessLogic.SEO;
using NopSolutions.NopCommerce.Common.Utils;

namespace NopSolutions.NopCommerce.Web.Modules{
    public partial class CategoryNavigation : BaseNopUserControl
    {
        #region Classes
        public class NopCommerceLi : WebControl, INamingContainer
        {
            public NopCommerceLi()
            {
                this.HyperLink = new HyperLink();
            }

            protected override void Render(System.Web.UI.HtmlTextWriter writer)
            {
                writer.WriteBeginTag("li");
                writer.WriteAttribute("class", this.CssClass);
                if (!String.IsNullOrEmpty(this.LiLeftMargin))
                {
                    writer.WriteAttribute("style", string.Format("margin-left: {0}px", this.LiLeftMargin));
                }
                writer.Write(HtmlTextWriter.TagRightChar);
                this.HyperLink.RenderControl(writer);
                writer.WriteEndTag("li");
            }

            public string LinkText
            {
                get
                {
                    return this.HyperLink.Text;
                }
                set
                {
                    if (value != null)
                    {
                        this.HyperLink.Text = value;
                    }
                }
            }

            public HyperLink HyperLink { get; set; }

            public string LiLeftMargin
            {
                get
                {
                    object liLeftMargin = this.ViewState["LiLeftMargin"];
                    if (liLeftMargin != null)
                        return Convert.ToString(liLeftMargin);
                    return string.Empty;

                }
                set
                {
                    this.ViewState["LiLeftMargin"] = value;
                }
            }
        }
        #endregion

        #region Handlers
        protected void Page_Load(object sender, EventArgs e)
        {

        }
        #endregion

        #region Overrides
        protected override void CreateChildControls()
        {
            if (!this.ChildControlsCreated)
            {
                CreateMenu();
                base.CreateChildControls();
                ChildControlsCreated = true;
            }
        }
        #endregion

        #region Utilities
        protected void CreateMenu()
        {
            CategoryCollection breadCrumb = null;
            var currentCategory = CategoryManager.GetCategoryById(CommonHelper.QueryStringInt("CategoryId"));
            if (currentCategory == null)
            {
                var product = ProductManager.GetProductById(CommonHelper.QueryStringInt("ProductId"));
                if (product != null)
                {
                    var productCategories = product.ProductCategories;
                    if (productCategories.Count > 0)
                        currentCategory = productCategories[0].Category;
                }
            }

            if (currentCategory != null)
                breadCrumb = CategoryManager.GetBreadCrumb(currentCategory.CategoryId);
            else
                breadCrumb = new CategoryCollection();

            CreateChildMenu(breadCrumb, 0, currentCategory, 0);
        }

        protected void CreateChildMenu(CategoryCollection breadCrumb, int rootCategoryId, Category currentCategory, int level)
        {
            int padding = level++ * 15;
            foreach (var category in CategoryManager.GetAllCategories(rootCategoryId))
            {
                var link = new NopCommerceLi();
                phCategories.Controls.Add(link);

                string categoryURL = SEOHelper.GetCategoryUrl(category.CategoryId);
                if (currentCategory != null && currentCategory.CategoryId == category.CategoryId)
                    link.CssClass = "active";
                else
                    link.CssClass = "inactive";
                link.HyperLink.NavigateUrl = categoryURL;
                link.HyperLink.Text = Server.HtmlEncode(category.Name);
                if (padding > 0)
                    link.LiLeftMargin = padding.ToString();

                for (int i = 0; i <= breadCrumb.Count - 1; i++)
                    if (breadCrumb[i].CategoryId == category.CategoryId)
                        CreateChildMenu(breadCrumb, category.CategoryId, currentCategory, level);
            }
        }
        #endregion
    }
}