categorydropdown.ascx.cs

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

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

public partial class CategoryDropDown_ascx : System.Web.UI.UserControl
{
	private string _selectOptionText = "Select...";
	private bool _selectOptionVisible = false;

	private bool _allCategoriesVisible = true;
	private string _allCategoriesText = "--- All Categories ----------------------------------------";

	private int _savedSelectedIndex = -1;
	private int _currentCategoryId = -100;

	private bool _isDataBound = false;

	public event CategorySelectionChangedEventHandler CategorySelectionChanged;

	public int CurrentCategoryId
	{
		get
		{
			return SelectedCategoryId;
		}
		set
		{
			SetCurrentCategory(value);
		}
	}

	public bool SelectOptionVisible
	{
		get
		{
			return _selectOptionVisible;
		}
		set
		{
			_selectOptionVisible = value;
		}
	}

	public string SelectOptionText
	{
		get
		{
			return _selectOptionText;
		}
		set
		{
			_selectOptionText = value;
		}
	}

	public string AllCategoriesOptionText
	{
		get
		{
			return _allCategoriesText;
		}
		set
		{
			_allCategoriesText = value;
		}
	}

	public bool AllCategoriesOptionVisible
	{
		get
		{
			return _allCategoriesVisible;
		}
		set
		{
			_allCategoriesVisible = value;
		}
	}



	public int SelectedCategoryId
	{
		get
		{
			if (CategoryList.SelectedIndex >= 0)
				return Convert.ToInt32(CategoryList.SelectedValue);
			else
				return DefaultValues.CategoryIdMinValue;
		}
		set
		{
			string v = value.ToString();
			ListItem selected = CategoryList.Items.FindByValue(v);
			if (selected != null)
			{
				selected.Selected = true;
			}
		}
	}

	public int SelectedIndex
	{
		get
		{
			return CategoryList.SelectedIndex;
		}
		set
		{
			if (CategoryList.Items.Count > 0)
				CategoryList.SelectedIndex = value;
		}
	}

	public bool Enabled
	{
		get
		{
			return CategoryList.Enabled;
		}
		set
		{
			CategoryList.Enabled = value;
		}
	}

	public void Refresh()
	{
		CategoryCache.ClearAll(Context);
		CategoryList.DataBind();
	}

	private void SetCurrentCategory(int categoryId)
	{
		if (!_isDataBound)
			CategoryList.DataBind();

		string categoryIdString = categoryId.ToString();
		ListItem li = CategoryList.Items.FindByValue(categoryIdString);
		if (li != null)
		{
			CategoryList.SelectedItem.Selected = false;
			li.Selected = true;
		}
	}

	protected void CategoryList_DataBound(object sender, EventArgs e)
	{
		_isDataBound = true;

		if (_allCategoriesVisible)
			CategoryList.Items.Insert(0, new ListItem(_allCategoriesText, DefaultValues.CategoryIdMinValueString));

		if (_selectOptionVisible && CategoryList.Items.Count > 0)
			CategoryList.Items.Insert(0, new ListItem(_selectOptionText, "-1"));

		if (_savedSelectedIndex != -1)
			CategoryList.SelectedIndex = _savedSelectedIndex;

	}
	protected void CategoryList_DataBinding(object sender, EventArgs e)
	{
		if (CategoryList.SelectedItem != null)
			_savedSelectedIndex = CategoryList.SelectedIndex;
	}

	protected void OnCategorySelectionChanged(CategorySelectionChangedEventArgs e)
	{
		if (CategorySelectionChanged != null)
			CategorySelectionChanged(this, e);
	}
	protected void CategoryList_SelectedIndexChanged(object sender, EventArgs e)
	{
		int categoryId = Convert.ToInt32(CategoryList.SelectedValue);
		if (categoryId != _currentCategoryId)
		{
			if (categoryId >= DefaultValues.CategoryIdMinValue)
			{
				OnCategorySelectionChanged(new CategorySelectionChangedEventArgs(categoryId));
			}
		}
		_currentCategoryId = categoryId;
	}
}