categoryadmin.cs

本系统是在asp版《在线文件管理器》的基础上设计制作

//------------------------------------------------------------------------------
// <copyright company="Telligent Systems">
//     Copyright (c) Telligent Systems Corporation.  All rights reserved.
// </copyright> 
//------------------------------------------------------------------------------

using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Web.UI.WebControls;
using CommunityServer.Components;
using CommunityServer.Galleries.Components;

namespace CommunityServer.Galleries.Controls
{

	public class CategoryAdmin : GalleryAdminTemplatedWebControl
	{

		#region Child Controls

		private TextBox Name;
		private TextBox Description;
		private RadioButtonList IsEnabled;
		private ParentCategoryDropDown ParentID;
		private Literal ErrorLabel;

		private Button Save;
		private Button Cancel;

		#endregion

		#region Public Properties

		[DefaultValue( "" )]
		public virtual string ApplicationKey
		{
			get
			{
				Object state = ViewState["ApplicationKey"];
				if(state != null)
					return (string)state;
				return "";
			}
			set { ViewState["ApplicationKey"] = value; }
		}

		[DefaultValue( 0 )]
		public virtual int CategoryID
		{
			get
			{
				Object state = ViewState["CategoryID"];
				if(state != null)
					return (int)state;
				return 0;
			}
			set { ViewState["CategoryID"] = value; }
		}

		#endregion

		#region Skin

		protected override void AttachChildControls()
		{
			Name = (TextBox)FindControl( "Name" );
			Description = (TextBox)FindControl( "Description" );
			IsEnabled = (RadioButtonList)FindControl( "IsEnabled" );
			ParentID = (ParentCategoryDropDown)FindControl( "ParentID" );
			ErrorLabel = (Literal)FindControl( "ErrorLabel" );

			Save = (Button)FindControl( "Save" );
			Cancel = (Button)FindControl( "Cancel" );

			InitializeChildControls();
		}

		private void InitializeChildControls()
		{
			Save.Click += new EventHandler(Save_Click);
			Cancel.Click += new EventHandler(Cancel_Click);
		}

		#endregion

		protected override void OnInit(EventArgs e)
		{
			base.OnInit(e);
			ApplicationKey = CSContext.Current.ApplicationKey;
			CategoryID = CSContext.Current.CategoryID;

			// Access check
			Permissions.AccessCheck( Galleries.GetGallery(ApplicationKey), Permission.Administer, CSContext.Current.User );
		}

		protected override void OnLoad(EventArgs e)
		{
			base.OnLoad (e);
			if(!Page.IsPostBack)
				DataBind();
		}


		public override void DataBind()
		{
			base.DataBind();

			if(CategoryID != 0)
			{
				PostCategory category = PostCategories.GetCategory(CategoryID, CategoryType.GalleryPicture, Galleries.GetGalleryID(ApplicationKey), true);
				Name.Text = Globals.HtmlDecode(category.Name);
				Description.Text = category.Description;
				IsEnabled.Items.FindByValue( category.IsEnabled.ToString() ).Selected = true;
				ParentID.SectionID = Galleries.GetGalleryID(ApplicationKey);
				ParentID.DataBind();
				ParentID.SelectedCategoryID = category.ParentID;
			}
			else
			{
				Name.Text = "";
				Description.Text = "";
				IsEnabled.Items.FindByValue( "True" ).Selected = true;
				ParentID.SectionID = Galleries.GetGalleryID(ApplicationKey);
				ParentID.DataBind();
			}
			ErrorLabel.Visible = false;
			Name.ForeColor = Color.Black;

			// Set some resource labels
			Save.Text = ResourceManager.GetString("Save");
			Cancel.Text = ResourceManager.GetString("Cancel");
		}

		private void Save_Click(Object sender, EventArgs e)
		{
			if(CategoryID == 0)
				CreateCategory();
			else
				UpdateCategory();

			if(Page.IsValid && !Globals.RedirectSiteUrl())
			{
				CSContext.Current.Context.Response.Redirect( GalleryUrls.Instance().Admin_ManageCategories(ApplicationKey), true );
			}
		}

		private void CreateCategory()
		{
			PostCategory category = new PostCategory();

			// Do the common stuff
			CommonSettings(category);

			// Update the database is the page is valid
			if(Page.IsValid)
				PostCategories.CreateCategory(category);
		}

		private void UpdateCategory()
		{
			PostCategory category = PostCategories.GetCategory(CategoryID, CategoryType.GalleryPicture, Galleries.GetGalleryID(ApplicationKey), true);

			// Do the common stuff
			CommonSettings(category);

			// Make sure the parent isn't the same as the current
			if(ParentID.SelectedCategoryID != 0)
			{
				PostCategory pcat = PostCategories.GetCategory(ParentID.SelectedCategoryID, CategoryType.GalleryPicture, ParentID.SectionID, true);
				if((pcat.CategoryID == CategoryID) || (pcat.Path.IndexOf("/" + CategoryID + "/") != -1))
					((RequiredFieldValidator)FindControl( "ParentIDValidator" )).IsValid = false;
			}

			// Update the database is the page is valid
			if(Page.IsValid)
				PostCategories.UpdateCategory(category);
		}

		private void CommonSettings(PostCategory category)
		{
			// Basic settings
			category.Name = HtmlScrubber.Clean(Name.Text.Trim(), false, true);
			category.Description = HtmlScrubber.Clean(Description.Text, false, true);
			category.IsEnabled = Boolean.Parse( IsEnabled.SelectedValue );

			// Some basic settings we should always have...
			category.CategoryType = CategoryType.GalleryPicture;
			category.ParentID = ParentID.SelectedCategoryID;
			category.SectionID = Galleries.GetGalleryID(ApplicationKey);

		
			// Check to make sure it isn't a duplicate
			ArrayList categories = PostCategories.GetCategories(Galleries.GetGalleryID(ApplicationKey), CategoryType.GalleryPicture, true);
			foreach(PostCategory cat in categories)
			{
				if((cat.Name.ToLower() == category.Name.ToLower()) && (cat.CategoryID != category.CategoryID))
				{
					ErrorLabel.Text = "<span style='color: red'>" + ResourceManager.GetString( "CategoryAdmin_Duplicate" ) + "</span>";
					ErrorLabel.Visible = true;
					Name.ForeColor = Color.Red;
					((RequiredFieldValidator)FindControl( "NameValidator" )).IsValid = false;
				}
			}
		}

		private void Cancel_Click(Object sender, EventArgs e)
		{
			if(!Globals.RedirectSiteUrl())
				CSContext.Current.Context.Response.Redirect( GalleryUrls.Instance().Admin_ManageCategories(ApplicationKey), true );
		}
	}
}