/// <summary>
/// Adds GPS destination location URL metadata item to the <see cref="IGalleryObject.MetadataItems" />
/// collection of <paramref name="galleryObject" />. If the gallery object's metadata does not contain GPS data or the
/// visibility of the GPS map link is turned off, no action is taken.
/// </summary>
/// <param name="galleryObject">The gallery object.</param>
/// <param name="metadataDisplaySettings">The metadata display settings.</param>
/// <remarks>The metadata item is added with <see cref="IGalleryObjectMetadataItem.HasChanges" /> = <c>false</c> to prevent it
/// from getting persisted to the database. This allows the hyperlink to be regenerated from the template, thus incorporating the
/// most recent template and other media object properties (such as title). Because the item is linked to the media object, it is
/// automatically included in the cache of media objects.
/// This function is identical to <see cref="AddGpsLocationWithMapLink" /> except it uses the primary (not destination) GPS settings.</remarks>
private static void AddGpsDestLocationWithMapLink(IGalleryObject galleryObject, IMetadataDefinitionCollection metadataDisplaySettings)
{
if (!metadataDisplaySettings.Find(FormattedMetadataItemName.GpsDestLocationWithMapLink).IsVisible)
{
return; // The map link is disabled, so there is nothing to do.
}
IGalleryObjectMetadataItemCollection metadata = galleryObject.MetadataItems;
IGalleryObjectMetadataItem gpsLocation;
if (metadata.TryGetMetadataItem(FormattedMetadataItemName.GpsDestLocation, out gpsLocation) && (!metadata.Contains(FormattedMetadataItemName.GpsDestLocationWithMapLink)))
{
// We have a GPS location but have not yet created the URL'd version. Do so now and add it to the collection.
IGalleryObjectMetadataItem latitude;
IGalleryObjectMetadataItem longitude;
bool foundLatitude = metadata.TryGetMetadataItem(FormattedMetadataItemName.GpsDestLatitude, out latitude);
bool foundLongitude = metadata.TryGetMetadataItem(FormattedMetadataItemName.GpsDestLongitude, out longitude);
if (foundLatitude && foundLongitude)
{
string url = GetGpsMapUrl(galleryObject, latitude.Value, longitude.Value, gpsLocation.Value);
if (!String.IsNullOrEmpty(url))
{
// Add to meta collection. Specify false for HasChanges to prevent it from getting persisted back to the database.
galleryObject.MetadataItems.AddNew(int.MinValue, FormattedMetadataItemName.GpsDestLocationWithMapLink, Resources.GalleryServerPro.Metadata_GpsDestLocationWithMapLink, url, false);
}
}
}
}
/// <summary>
/// Gets the collection of tag values having the specified <paramref name="tagName" />.
/// </summary>
/// <param name="metas">The metadata items.</param>
/// <param name="tagName">Name of the tag.</param>
/// <returns>Returns a collection of strings.</returns>
private static IEnumerable<string> GetTagList(IGalleryObjectMetadataItemCollection metas, MetadataItemName tagName)
{
IGalleryObjectMetadataItem mdTag;
if (metas.TryGetMetadataItem(tagName, out mdTag))
{
return mdTag.Value.ToListFromCommaDelimited();
}
else
return new string[] { };
}
