categories.aspx.cs

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using System;
using System.Web.UI.WebControls;

using AspNet.StarterKits.Classifieds.BusinessLogicLayer;
using AspNet.StarterKits.Classifieds.Web;

public partial class Categories_aspx : System.Web.UI.Page
{
	protected void AddCategoryButton_Click(object sender, EventArgs e)
	{
		if (Page.IsValid)
		{
			int parentCategoryId = CategoryPath.CurrentCategoryId;
			int newCategoryId = CategoriesDB.InsertCategory(parentCategoryId, Server.HtmlEncode(NewCategoryTextBox.Text));

			CategoryDropDown.Refresh();

			NewCategoryTextBox.Text = String.Empty;
			SubcategoriesList.DataBind();
		}
	}

	protected void RemoveCategoryButton_Click(object sender, EventArgs e)
	{
		int categoryId = CategoryPath.CurrentCategoryId;
		if (CategoriesDB.RemoveCategory(categoryId))
		{
			CategoryDropDown.Refresh();
			SetCurrentCategory(CategoryPath.CurrentParentCategoryId);
			RemoveSuccessLabel.Visible = true;
			RemoveFailedLabel.Visible = false;
		}
		else
		{
			RemoveSuccessLabel.Visible = false;
			RemoveFailedLabel.Visible = true;
		}
	}

	protected void MoveButton_Click(object sender, EventArgs e)
	{
		int currentCategoryId = CategoryPath.CurrentCategoryId;
		int newParentCategoryId = CategoryDropDown.SelectedCategoryId;

		if (MoveAction.SelectedValue.Equals("Category"))
		{
			CategoriesDB.MoveCategory(currentCategoryId, newParentCategoryId);
			CategoryDropDown.Refresh();
			SetCurrentCategory(CategoryPath.CurrentParentCategoryId);
		}
		else if (MoveAction.SelectedValue.Equals("Ads"))
		{
			// newParentCategoryId is the new CategoryId
			// for all Ads entered under 'currentCategoryId'
			AdsDB.MoveAdsToCategory(currentCategoryId, newParentCategoryId);
			CategoryDropDown.SelectedIndex = 0;
		}
	}

	protected void RenameCategoryButton_Click(object sender, EventArgs e)
	{
		if (RequiredCategoryNameValidator.IsValid)
		{
			int categoryId = CategoryPath.CurrentCategoryId;
			CategoriesDB.UpdateCategoryName(categoryId, Server.HtmlEncode(RenameCategoryTextBox.Text));
			CategoryDropDown.Refresh();
			SetCurrentCategory(categoryId);
		}
	}
	protected void Page_Load(object sender, EventArgs e)
	{
		if (!Page.IsPostBack)
		{
			SetCurrentCategory(DefaultValues.CategoryIdMinValue);
		}
	}

	protected void CategoryPath_CategorySelectionChanged(object sender, CategorySelectionChangedEventArgs e)
	{
		UpdateCategoryDisplay();
	}

	protected void UpdateCategoryDisplay()
	{
		if (CategoryPath.CurrentCategoryId == DefaultValues.CategoryIdMinValue)
		{
			CurrentCategoryLabel.Text = "[All Categories]";
			CurrentCategoryActionLabel.Text = "All Categories";

			RenameCategoryTextBox.Text = String.Empty;

			RenameCategoryTextBox.Enabled =
				RenameCategoryButton.Enabled = false;


			MoveButton.Enabled = false;
			MoveAction.Enabled = false;
			CategoryDropDown.Enabled = false;

			RemoveCategoryButton.Enabled = false;

		}
		else
		{
			CurrentCategoryLabel.Text =
				CurrentCategoryActionLabel.Text =
				RenameCategoryTextBox.Text = CategoryPath.CurrentCategoryName;

			RenameCategoryTextBox.Enabled =
				RenameCategoryButton.Enabled = true;

			MoveButton.Enabled = true;
			MoveAction.Enabled = true;
			CategoryDropDown.Enabled = true;

			RemoveCategoryButton.Enabled = true;
		}
	}


	protected void SetCurrentCategory(int categoryId)
	{
		CategoryPath.CurrentCategoryId = categoryId;
		UpdateCategoryDisplay();
	}

	protected void SubcategoriesList_SelectedIndexChanged(object sender, EventArgs e)
	{
		int categoryId = Convert.ToInt32(SubcategoriesList.SelectedValue);
		if (categoryId > DefaultValues.CategoryIdMinValue)
		{
			SetCurrentCategory(categoryId);
		}
	}
	protected void SubcategoriesList_DataBound(object sender, EventArgs e)
	{
		if (SubcategoriesList.Items.Count > 0)
		{
			SubcategoriesList.Enabled = true;
		}
		else
		{
			SubcategoriesList.Items.Add(new ListItem("(no sub-categories)", DefaultValues.CategoryIdMinValueString));
			SubcategoriesList.Enabled = false;
		}
	}
}