/// <summary>
/// Check the user whether has the permission to the sitemap item.
/// </summary>
/// <param name="userId"></param>
/// <param name="siteMapItem"></param>
/// <returns></returns>
private bool HasPermission(Guid userId, SiteMapItemConfig siteMapItem)
{
if (siteMapItem == null || string.IsNullOrEmpty(siteMapItem.Value)) return true;
return this.permissionApi.HasPermission(userId, siteMapItem.Value);
}
/// <summary>
/// Filter all sitemap item configs not included in specified user permissions.
/// </summary>
/// <param name="siteMapItemConfigEnumerable"></param>
/// <param name="userId"></param>
/// <returns></returns>
private IEnumerable<SiteMapItemConfig> FilterSiteMapItemsByUserPermission(IEnumerable<SiteMapItemConfig> siteMapItemConfigEnumerable, Guid userId)
{
List<SiteMapItemConfig> results = new List<SiteMapItemConfig>();
int totalCount = siteMapItemConfigEnumerable.Count();
int authenticatedSiteMapItemCount = 0;
SiteMapItemConfig previousSiteMapItemConfig = null;
for (int i = 0; i < totalCount; i++)
{
SiteMapItemConfig siteMapItemConfig = siteMapItemConfigEnumerable.ElementAt(i);
bool emptySiteMapItem = Kit.IsEmpty(siteMapItemConfig.Value);
if (!emptySiteMapItem)
{
// remove an unauthenticated sitemap item with non-empty value.
bool authenticatedSiteMapItem = this.HasPermission(userId, siteMapItemConfig);
if (!authenticatedSiteMapItem) continue;
}
IEnumerable<SiteMapItemConfig> includedSiteMapItemConfigEnumerable = null;
if (siteMapItemConfig.Item != null && siteMapItemConfig.Item.Length > 0)
includedSiteMapItemConfigEnumerable = FilterSiteMapItemsByUserPermission(siteMapItemConfig.Item, userId);
// remove the "ancestor" sitemap item (SiteMapItem.Value is null or empty) without child
if (emptySiteMapItem
&& siteMapItemConfig.Type != SiteMapItemTypes.Separator
&& (includedSiteMapItemConfigEnumerable == null || includedSiteMapItemConfigEnumerable.Count() == 0))
{
continue;
}
SiteMapItemConfig newSiteMapItemConfig = new SiteMapItemConfig
{
Id = siteMapItemConfig.Id,
ClientSideCommand = siteMapItemConfig.ClientSideCommand,
PageUrl = siteMapItemConfig.PageUrl,
IconClassName = siteMapItemConfig.IconClassName,
Item = siteMapItemConfig.Item,
Text = siteMapItemConfig.Text,
Type = siteMapItemConfig.Type,
Value = siteMapItemConfig.Value
};
// set processed children back to siteMapItemConfig
newSiteMapItemConfig.Item = (includedSiteMapItemConfigEnumerable != null && includedSiteMapItemConfigEnumerable.Count() > 0) ? includedSiteMapItemConfigEnumerable.ToArray() : null;
if (newSiteMapItemConfig.Type == SiteMapItemTypes.Separator)
{
// "Separator" never be first
if (authenticatedSiteMapItemCount == 0) continue;
// no continuous 2 "Separator"
if (previousSiteMapItemConfig != null && previousSiteMapItemConfig.Type == SiteMapItemTypes.Separator) continue;
// "Separator" never be last
if (i == totalCount - 1) continue;
}
previousSiteMapItemConfig = newSiteMapItemConfig;
results.Add(newSiteMapItemConfig);
authenticatedSiteMapItemCount++;
}
return results;
}