picturelisting.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.ComponentModel;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using CommunityServer.Components;
using CommunityServer.Controls;
using CommunityServer.Galleries.Components;

namespace CommunityServer.Galleries.Controls
{

	public class PictureListing : GalleryThemedControl
	{

		#region Private Members

		private int columnCount = 0;
		private int rowCount = 0;
		private int totalColumns = 0;
		private bool totalColumnsFound = false;
		private int totalPictures = 0;

		#endregion

		#region Public Properties

		[DefaultValue( 1 )]
		public int CurrentPage
		{
			get { return currentPage; }
			set { currentPage = value; }
			}
		private int currentPage = 1;

		[DefaultValue( 4 )]
		public int Columns
		{
			get { return columns; }
			set { columns = value; }
			}
		private int columns = 4;

		[DefaultValue( 3 )]
		public int Rows
		{
			get { return rows; }
			set { rows = value; }
			}
		private int rows = 3;

		#endregion

		#region Child Controls

		private GalleryThreadSortDropDownList PictureSortDDL;
		private HyperLink SlideShowLink;
		private RepeaterPlusNone Pictures;
		private RssButton rssButton;
		private PagingControl pagination;
		private HtmlTableCell footerRow;

		#endregion

		#region Skin

		protected override void AttachChildControls()
		{
			PictureSortDDL = (GalleryThreadSortDropDownList)FindControl( "SortPictures" );
			SlideShowLink = (HyperLink)FindControl( "SlideShowLink" );
			Pictures = (RepeaterPlusNone)FindControl( "Pictures" );
			rssButton = (RssButton)FindControl( "RssButton" );
			pagination = (PagingControl)FindControl( "Pagination" );
			footerRow = FindControl( "FooterRow" ) as HtmlTableCell;
			InitializeChildControls();
		}

		private void InitializeChildControls()
		{
			Pictures.ItemDataBound += new RepeaterItemEventHandler(Pictures_ItemDataBound);
			Pictures.NoneItemsDataBound += new RepeaterItemEventHandler(Pictures_NoneItemsDataBound);
			PictureSortDDL.SelectedIndexChanged += new EventHandler(PictureSortDDL_SelectedIndexChanged);

			GalleryUserCookie userCookie = new GalleryUserCookie(CSContext.Current.User);
			PictureSortDDL.AutoPostBack = true;
			PictureSortDDL.SelectedSortByValue = userCookie.ThreadSortBy;
			PictureSortDDL.SelectedSortOrderValue = userCookie.ThreadSortOrder;

			// Find out the width/height for the slideshow
			int width = CurrentGallery.SlideshowX + 300;
			int height = CurrentGallery.SlideshowY + 150;
			if(width < 800) width = 800;
			if(height < 550) height = 550;

			SlideShowLink.NavigateUrl = "javascript:void(0);";
			SlideShowLink.Attributes.Add("onclick", "javascript:window.open('" + GalleryUrls.Instance().ViewSlideshow(CurrentGallery.ApplicationKey, CSContext.Current.CategoryID) + "', '', 'width=" + width + ",height=" + height + ",status=0,titlebar=0,toolbar=0,scrollbars=0');");
			SlideShowLink.Text = ResourceManager.GetString("Gallery_SlideShow");

			if(rssButton != null)
			{
				if(CSContext.Current.CategoryID == -1)
					rssButton.NavigateUrl = GalleryUrls.Instance().Rss(RssType.Pictures, CSContext.Current.ApplicationKey);
				else
					rssButton.NavigateUrl = GalleryUrls.Instance().Rss(RssType.Pictures, CSContext.Current.ApplicationKey, CSContext.Current.CategoryID);
				rssButton.ImageUrl = Globals.GetSkinPath() + "/images/gallery_xml.gif";
			}
		}

		#endregion

		protected override void OnInit(EventArgs e)
		{
			base.OnInit(e);

			// Set the default columns and rows
			Columns = CurrentGallery.PictureListingColumns;
			Rows = CurrentGallery.PictureListingRows;

			// Grab the page number, if present
			if(this.Page.Request.QueryString["ppage"] != null)
				CurrentPage = int.Parse(this.Page.Request.QueryString["ppage"]);
		}

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

		private void BindPictures()
		{
			// Find out how many total pictures there are
			if(CSContext.Current.CategoryID != -1)
				totalPictures = PostCategories.GetCategory(CSContext.Current.CategoryID, CategoryType.GalleryPicture, CurrentGallery.SectionID).TotalThreads;
			else
				totalPictures = CurrentGallery.TotalThreads;

			// Setup the pagination
			pagination.CurrentPage = CurrentPage;
			pagination.TotalPages = (int)Math.Ceiling( (double)totalPictures / (double)(Columns*Rows) );
			pagination.PrefixText = "page";
			pagination.QueryName = "ppage";
			pagination.NavigateUrl = Page.Request.RawUrl;
			pagination.BindPages();

			// Set up the query
			GalleryThreadQuery query = new GalleryThreadQuery();
			query.SectionID = CurrentGallery.SectionID;
			query.CategoryID = CSContext.Current.CategoryID;
			query.PageIndex = CurrentPage-1;
			query.PageSize = Columns*Rows;
			query.SortBy = PictureSortDDL.SelectedSortByValue;
			query.SortOrder = PictureSortDDL.SelectedSortOrderValue;

			// Set the datasource and bind
			Pictures.DataSource = Components.Pictures.GetPictures(query).Threads;
			Pictures.DataBind();
		
			// Set the footer row colspan
			if(footerRow != null)
				footerRow.ColSpan = totalColumns;
		}

		private void Pictures_ItemDataBound(object sender, RepeaterItemEventArgs e)
		{
			Picture dataItem = e.Item.DataItem as Picture;

			switch( e.Item.ItemType ) 
			{
				case ListItemType.Item:
				case ListItemType.AlternatingItem:

					HyperLink PictureNameLink = (HyperLink)e.Item.FindControl( "PictureName" );
					Literal TotalViews = (Literal)e.Item.FindControl( "TotalViews");
			
					PictureNameLink.Text = dataItem.Subject;
					PictureNameLink.NavigateUrl = GalleryUrls.Instance().ViewPicture(CurrentGallery.ApplicationKey, CSContext.Current.CategoryID, dataItem);
					PictureNameLink.Font.Bold = true;

					if (TotalViews != null)
						TotalViews.Text = string.Format( ResourceManager.GetString( "Gallery_PictureListing_TotalViews" ), dataItem.Views );

					GalleryImage ThumbImage = (GalleryImage)e.Item.FindControl( "ThumbImage" );
					ThumbImage.PostID = dataItem.PostID;
					ThumbImage.NavigateUrl = GalleryUrls.Instance().ViewPicture(CurrentGallery.ApplicationKey, CSContext.Current.CategoryID, dataItem);
					ThumbImage.Picture = dataItem;
					ThumbImage.DataBind();

					GalleryImage ThumbLargeImage = e.Item.FindControl( "ThumbLargeImage" ) as GalleryImage;
					if(ThumbLargeImage != null)
					{
						ThumbLargeImage.PostID = dataItem.PostID;
						ThumbLargeImage.NavigateUrl = GalleryUrls.Instance().ViewPicture(CurrentGallery.ApplicationKey, CSContext.Current.CategoryID, dataItem);
						ThumbLargeImage.Picture = dataItem;
						ThumbLargeImage.DataBind();
					}

					RatingListing ratingListing = (RatingListing)e.Item.FindControl( "RatingListing" );
					ratingListing.ApplicationKey = CurrentGallery.ApplicationKey;
					ratingListing.PictureID = dataItem.PostID;
					ratingListing.Picture = dataItem;
					ratingListing.DataBind();

					// Set column width
					HtmlTableCell tableColumn = e.Item.FindControl("TableColumn") as HtmlTableCell;
					if(tableColumn != null)
						tableColumn.Width = (100 / Columns).ToString() + "%";

					// Begin a column, if necessary
					if(columnCount == 0)
					{
						Literal BeginRowLabel = (Literal)e.Item.FindControl( "BeginRow" );
						BeginRowLabel.Text = "<tr>";
					}
					columnCount++;
					if(!totalColumnsFound)
						totalColumns++;

					// End a column, if necessary
					if((columnCount == Columns) || ((rowCount*Columns+columnCount) == totalPictures))
					{
						Literal EndRowLabel = (Literal)e.Item.FindControl( "EndRow" );
						EndRowLabel.Text = "</tr>";
						columnCount = 0;
						totalColumnsFound = true;
						rowCount++;
					}

					break;
			}
		}

		private void PictureSortDDL_SelectedIndexChanged(object sender, EventArgs e)
		{
			GalleryUserCookie userCookie = new GalleryUserCookie(CSContext.Current.User);
			userCookie.ThreadSortBy = PictureSortDDL.SelectedSortByValue;
			userCookie.ThreadSortOrder = PictureSortDDL.SelectedSortOrderValue;
			BindPictures();
		}

		private void Pictures_NoneItemsDataBound(object sender, RepeaterItemEventArgs e)
		{
			Literal NoRecordsLabel = (Literal)e.Item.FindControl( "NoRecords" );
			NoRecordsLabel.Text = ResourceManager.GetString( "ForumMembers_NoRecords" );
		}
	}
}