/// <summary>
/// Checks if the list has any mentions of the trending list, if so updates the list, otherwise it adds the new instance to the trending list.
/// </summary>
/// <param name="text"></param>
protected void AddToTrendingList(string text)
{
// Prevent throwing exception for empty text
if (text.Length == 0)
{
return;
}
// Split the text in order to find each hashtag
// If the first char is a # then set a flag, else leave it to zero
var flag = 0;
if (text[0] == '#')
{
flag = 1;
}
string[] textSplit = text.Split('#');
for (var counter = 0; counter < textSplit.Length; counter++)
{
// Check if first word in order to deal with the eventual @ lost on splitting
if (counter == 0 && flag == 0)
{
continue;
}
var hashtag = '#' + textSplit[counter];
// Hashtags can only contain letters, numbers, and underscores
foreach (Match match in Regex.Matches(hashtag, @"\B\#\w{1,15}\b"))
{
if (TrendingList.ContainsKey(match.ToString()))
{
TrendingList[match.ToString()] += 1;
}
else
{
TrendingList.Add(match.ToString(), 1);
}
}
}
}
private async Task QueryTrending(DiscoverItem item)
{
CommonProvider common = new CommonProvider();
List <TrendingResult> result = new List <TrendingResult>();
if (pageIndex == 0)
{
if (TrendingList == null)
{
TrendingList = new ObservableCollection <TrendingResult>();
}
else
{
TrendingList.Clear();
}
}
if (TypeSelectedItem.HotType != HotTopicType.None)
{
result = await common.QueryDiscover(TypeSelectedItem.HotType, pageIndex + 1, 20, new List <TrendingResult>(TrendingList));
}
if (TypeSelectedItem.Type != TopicType.None)
{
int index = 0;
if (TrendingList.Count != 0)
{
index = TrendingList[TrendingList.Count - 1].RecommendedAt - 1;
}
result = await common.QueryDiscover(TypeSelectedItem.Type, index, 20, 20);
}
result.ForEach(x => TrendingList.Add(x));
pageIndex++;
}
// Open new Trending List window
private void TrendingListBtn_Click(object sender, RoutedEventArgs e)
{
TrendingList trendingListWindow = new TrendingList();
trendingListWindow.Show();
}
