managephotos.aspx.cs

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

using AspNet.StarterKits.Classifieds.BusinessLogicLayer;

public partial class ManagePhotos_aspx : System.Web.UI.Page
{
	public int AdId
	{
		get
		{
			if (ViewState["AdId"] != null)
				return (int)ViewState["AdId"];
			else
				return 0;
		}
		set
		{
			ViewState["AdId"] = value;
		}
	}

	protected void Page_Load(object sender, EventArgs e)
	{
		if (!Page.IsPostBack)
		{
			SiteSettings s = SiteSettings.GetSharedSettings();

			int adId = 0;
			string adIdQs = Request.QueryString["id"];

			AdsDataComponent.AdsRow adRow = null;
			bool isAdmin = Roles.IsUserInRole(DefaultValues.AdministratorRole);

			if (adIdQs != null && Int32.TryParse(adIdQs, out adId))
			{
				this.AdId = adId;
				adRow = AdsDB.GetAdById(adId);
			}

			// only allow the actual member and administrators to edit photos
			if (adRow != null && (adRow.MemberId == Profile.MemberId || isAdmin))
			{
				AdTitleLabel.Text = adRow.Title;
				string idQs = "id=" + Server.UrlEncode(adIdQs);

				ShowAdLink.NavigateUrl = "~/ShowAd.aspx?" + idQs;
				BackToEditAdLink.NavigateUrl = "~/EditAd.aspx?" + idQs;
				BackToEditAdLink.Visible = (isAdmin || s.AllowUsersToEditAds);
				if (isAdmin && !s.AllowUsersToEditAds)
					BackToEditAdLink.Text += " (Admin)";
			}
			else
			{
				// if the above test fails, re-direct to MyAds
				Response.Redirect("~/MyAds.aspx", true);
			}

			MainUploadsPanel.Visible = s.AllowImageUploads;
			NoUploadsPanel.Visible = !s.AllowImageUploads;
			if (s.MaxPhotosPerAd == 1)
				NumTotalUploadLabel.Text = "1 photo";
			else
				NumTotalUploadLabel.Text = s.MaxPhotosPerAd.ToString() + " photos";

		}
	}

	protected void UploadPhotoDetailsView_ItemInserting(object sender, DetailsViewInsertEventArgs e)
	{
		byte[] uploadedOriginal = e.Values["UploadBytes"] as byte[];
		if (uploadedOriginal == null || uploadedOriginal.Length == 0)
		{
			e.Cancel = true;
			UploadErrorMessage.Visible = false;
		}
		else
		{
			try
			{
				// adding resized photo bytes to arguments

				byte[] fullSize = PhotosDB.ResizeImageFile(uploadedOriginal, PhotoSize.Full);
				byte[] mediumSize = PhotosDB.ResizeImageFile(uploadedOriginal, PhotoSize.Medium);
				byte[] smallSize = PhotosDB.ResizeImageFile(uploadedOriginal, PhotoSize.Small);

				e.Values.Add("bytesFull", fullSize);
				e.Values.Add("bytesMedium", mediumSize);
				e.Values.Add("bytesSmall", smallSize);

				// removing original upload bytes from arguments
				e.Values.Remove("UploadBytes");

				// if this is the first ad photo uploaded, use it as the preview
				bool useAsPreview = (PhotoGridView.Rows.Count == 0);
				e.Values.Add("useAsPreview", useAsPreview);
				UploadErrorMessage.Visible = false;
			}
			catch
			{
				// image format was not acceptable
				e.Cancel = true;
				UploadErrorMessage.Visible = true;
			}
		}
	}
	protected void PhotoDataSource_Selected(object sender, ObjectDataSourceStatusEventArgs e)
	{
		AdsDataComponent.PhotosDataTable photos = e.ReturnValue as AdsDataComponent.PhotosDataTable;
		SiteSettings settings = SiteSettings.GetSharedSettings();
		if (photos != null)
		{
			PreviewTipPanel.Visible = photos.Rows.Count > 1;
			this.UploadPhotoDetailsView.Visible = (photos.Rows.Count < settings.MaxPhotosPerAd);
		}
		else
		{
			this.UploadPhotoDetailsView.Visible = (settings.MaxPhotosPerAd > 0);
		}
	}
	protected void PhotoGridView_RowCommand(object sender, GridViewCommandEventArgs e)
	{
		if (e.CommandName.Equals("SelectAsPreview"))
		{
			int photoId = Convert.ToInt32(e.CommandArgument);
			PhotosDB.SetAdPreviewPhoto(this.AdId, photoId);
			PhotoGridView.DataBind();
		}
	}

}