void StopListenToDataRefresh()
{
INewsCollector newsCollector = ServiceRegistration.Get <INewsCollector>(false);
if (newsCollector != null)
{
newsCollector.RefeshStarted -= NewsDataRefeshStarted;
newsCollector.RefeshFinished -= NewsDataRefeshFinished;
}
}
void GetFeeds()
{
INewsCollector newsCollector = ServiceRegistration.Get <INewsCollector>(false);
if (newsCollector != null)
{
SetNewFeeds(newsCollector, false);
StartListenToDataRefresh(newsCollector);
}
}
private void SetNewFeeds(INewsCollector newsCollector, bool fireChanged)
{
var allFeeds = newsCollector.GetAllFeeds();
_feeds.Clear();
allFeeds.ForEach(f => _feeds.Add(f));
if (fireChanged)
{
_feeds.FireChange();
}
}
public void ExitModelContext(NavigationContext oldContext, NavigationContext newContext)
{
// If changes were made, call refresh of the feeds
if (HasChanges)
{
INewsCollector newsCollector = ServiceRegistration.Get <INewsCollector>(false);
if (newsCollector != null)
{
newsCollector.RefreshNow();
}
HasChanges = false;
}
}
public override void Save()
{
NewsSettings settings = SettingsManager.Load <NewsSettings>();
settings.RefreshInterval = (int)_value;
SettingsManager.Save(settings);
INewsCollector newsCollector = ServiceRegistration.Get <INewsCollector>(false);
if (newsCollector != null)
{
newsCollector.ChangeRefreshInterval((int)_value);
}
}
protected override void Update()
{
INewsCollector newsCollector = ServiceRegistration.Get <INewsCollector>(false);
if (newsCollector != null)
{
NewsItem newNewsItem = newsCollector.GetRandomNewsItem();
if (newNewsItem != null)
{
newNewsItem.CopyTo(CurrentNewsItem);
// Decrease interval once we have the first item
ChangeInterval(NEWSITEM_UPDATE_INTERVAL);
}
}
}
public void Refresh()
{
INewsCollector newsCollector = ServiceRegistration.Get <INewsCollector>(false);
if (newsCollector != null)
{
NewsItem newNewsItem = newsCollector.GetRandomNewsItem();
if (newNewsItem != null)
{
newNewsItem.CopyTo(CurrentNewsItem);
var feeds = newsCollector.GetAllFeeds().OrderByDescending(f => f.LastUpdated);
//Only update if changed
if (!feeds.Select(f => f.LastUpdated).SequenceEqual(_currentFeedItems.Select(f => (f as NewsFeed)?.LastUpdated ?? DateTime.Now)))
{
_currentFeedItems.Clear();
foreach (var feed in feeds)
{
feed.Command = new AsyncMethodDelegateCommand(() => ShowNews(feed));
_currentFeedItems.Add(feed);
}
_currentFeedItems.FireChange();
}
var items = newsCollector.GetAllNewsItems().OrderByDescending(i => i.PublishDate);
//Only update if changed
if (!items.Select(i => i.PublishDate).SequenceEqual(_currentNewsItems.Select(i => (i as NewsItem)?.PublishDate ?? DateTime.Now)))
{
_currentNewsItems.Clear();
_currentTopNewsItems.Clear();
foreach (var newsItem in items)
{
newsItem.Command = new AsyncMethodDelegateCommand(() => ShowNews(newsItem));
_currentNewsItems.Add(newsItem);
if (_currentTopNewsItems.Count < NEWSITEM_TOP_COUNT)
{
_currentTopNewsItems.Add(newsItem);
}
}
_currentNewsItems.FireChange();
_currentTopNewsItems.FireChange();
}
}
}
}
void NewsDataRefeshFinished(INewsCollector newsCollector)
{
IsUpdating = false;
SetNewFeeds(newsCollector, true);
}
void StartListenToDataRefresh(INewsCollector newsCollector)
{
newsCollector.RefeshStarted += NewsDataRefeshStarted;
newsCollector.RefeshFinished += NewsDataRefeshFinished;
IsUpdating = newsCollector.IsRefeshing;
}
void NewsDataRefeshFinished(INewsCollector newsCollector)
{
IsUpdating = false;
SetNewFeeds(newsCollector, true);
}
void StartListenToDataRefresh(INewsCollector newsCollector)
{
newsCollector.RefeshStarted += NewsDataRefeshStarted;
newsCollector.RefeshFinished += NewsDataRefeshFinished;
IsUpdating = newsCollector.IsRefeshing;
}
private void SetNewFeeds(INewsCollector newsCollector, bool fireChanged)
{
var allFeeds = newsCollector.GetAllFeeds();
_feeds.Clear();
allFeeds.ForEach(f => _feeds.Add(f));
if (fireChanged)
_feeds.FireChange();
}
