/// <summary>
/// Sets the search criterias to find the blog items used for the listing.
/// Uses the properties IsTagListing, IsDateListing and IsTeamLevel to determine what criterias to set up.
/// </summary>
private void SetSearchCriterias()
{
if (CurrentPage[BlogUtility.IsTagListingPropertyName] != null)
{
_criterias.Add(BlogUtility.CreateCriteria(CompareCondition.Equal, "PageTypeName", PropertyDataType.PageType, BlogUtility.ItemPageTypeName, true));
_criterias.Add(BlogUtility.CreateCriteria(CompareCondition.Equal, "PageCategory", PropertyDataType.Category, CurrentPage.PageName, true));
_searchStart = (PageReference)CurrentPage[BlogUtility.StartPropertyName];
}
else if (CurrentPage[BlogUtility.IsDateListingPropertyName] != null && CurrentPage[BlogUtility.IsTeamLevelPropertyName] == null)
{
_criterias.Add(BlogUtility.CreateCriteria(CompareCondition.Equal, "PageTypeName", PropertyDataType.PageType, BlogUtility.ItemPageTypeName, true));
_searchStart = CurrentPageLink;
}
else if (CurrentPage[BlogUtility.IsDateListingPropertyName] != null && CurrentPage[BlogUtility.IsTeamLevelPropertyName] != null)
{
_criterias.Add(BlogUtility.CreateCriteria(CompareCondition.Equal, "PageTypeName", PropertyDataType.PageType, BlogUtility.ItemPageTypeName, true));
_criterias.Add(BlogUtility.CreateCriteria(CompareCondition.GreaterThan, "PageStartPublish", PropertyDataType.Date, CurrentPage.StartPublish.ToString(), true));
_criterias.Add(BlogUtility.CreateCriteria(CompareCondition.LessThan, "PageStartPublish", PropertyDataType.Date, CurrentPage.StartPublish.Add(SearchInterval).ToString(), true));
_searchStart = (PageReference)CurrentPage[BlogUtility.StartPropertyName];
}
else
{
throw new EPiServerException(Translate("/blog/listpage/errormessage"));
}
}
public Task <IList <BlogItem> > LoadItemsAsync(BlogGroup group)
{
return(Task.Run(async() =>
{
var feed = await GetFeed(group.RssUri);
IList <BlogItem> items = new List <BlogItem>();
foreach (var item in feed.Items)
{
try
{
var blogItem = new BlogItem {
Group = group
};
var uri = string.Empty;
if (item.Links.Count > 0)
{
var link =
item.Links.FirstOrDefault(
l => l.RelationshipType.Equals("alternate", StringComparison.OrdinalIgnoreCase)) ??
item.Links[0];
uri = link.Uri.AbsoluteUri;
}
blogItem.Id = uri;
blogItem.PageUri = new Uri(uri, UriKind.Absolute);
blogItem.Title = item.Title != null ? item.Title.Text : "(no title)";
blogItem.PostDate = item.PublishDate.LocalDateTime;
var content = "(no content)";
if (item.Content != null)
{
content = BlogUtility.ParseHtml(((TextSyndicationContent)item.Content).Text);
}
else if (item.Summary != null)
{
content = BlogUtility.ParseHtml(item.Summary.Text);
}
blogItem.Description = content;
items.Add(blogItem);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
return items;
}));
}
public async Task LoadAllItems(BlogGroup group)
{
var cachedItems = await LoadCachedItems(group);
group.ItemCount = cachedItems.Count;
group.NewItemCount = 0;
var newItems = await LoadLiveItems(group);
foreach (var item in newItems.Where(i => !cachedItems.Contains(i, new BaseItemComparer())))
{
var error = string.Empty;
try
{
var client = GetClient();
var page = await client.GetStringAsync(item.PageUri);
item.ImageUriList = new ObservableCollection <Uri>(BlogUtility.ExtractImagesFromPage(page));
foreach (var image in item.ImageUriList)
{
ImageUriManager.AddImage(item.Id, image);
}
}
catch (Exception ex)
{
error = ex.Message;
}
if (!string.IsNullOrEmpty(error))
{
await _dialog.ShowDialogAsync(error);
}
cachedItems.Add(item);
group.NewItemCount++;
await _storage.SaveItem(group.Id.GetHashCode().ToString(), item);
}
foreach (var item in cachedItems.OrderByDescending(i => i.PostDate))
{
foreach (var image in item.ImageUriList)
{
ImageUriManager.AddImage(item.Id, image);
}
group.Items.Add(item);
}
group.ItemCount = group.Items.Count();
}
public async Task <IList <BlogItem> > LoadItemsAsync(BlogGroup group)
{
var info = NetworkInformation.GetInternetConnectionProfile();
if (info == null || info.GetNetworkConnectivityLevel() != NetworkConnectivityLevel.InternetAccess)
{
return(new List <BlogItem>());
}
var retVal = new List <BlogItem>();
var outerError = string.Empty;
try
{
var client = GetSyndicationClient();
var feed = await client.RetrieveFeedAsync(group.RssUri);
foreach (var item in feed.Items.OrderBy(i => i.PublishedDate))
{
var error = string.Empty;
try
{
var blogItem = new BlogItem {
Group = group
};
var uri = string.Empty;
if (item.Links.Count > 0)
{
var link =
item.Links.FirstOrDefault(
l => l.Relationship.Equals("alternate", StringComparison.OrdinalIgnoreCase)) ??
item.Links[0];
uri = link.Uri.AbsoluteUri;
}
blogItem.Id = uri;
blogItem.PageUri = new Uri(uri, UriKind.Absolute);
blogItem.Title = item.Title != null ? item.Title.Text : "(no title)";
blogItem.PostDate = item.PublishedDate.LocalDateTime;
var content = "(no content)";
if (item.Content != null)
{
content = BlogUtility.ParseHtml(item.Content.Text);
}
else if (item.Summary != null)
{
content = BlogUtility.ParseHtml(item.Summary.Text);
}
blogItem.Description = content;
retVal.Add(blogItem);
}
catch (Exception ex)
{
error = ex.Message;
}
if (!string.IsNullOrEmpty(error))
{
await _dialog.ShowDialogAsync(error);
}
}
}
catch (Exception ex)
{
outerError = ex.Message;
}
if (!string.IsNullOrEmpty(outerError))
{
await _dialog.ShowDialogAsync(outerError);
}
return(retVal);
}
