public void InitEventFilter()
{
_feedService = ((App)Application.Current).AppContainer.Resolve <IFeedService>();
_presentationService = ((App)Application.Current).AppContainer.Resolve <IPresentationService>();
filterControlContainer.Children.Clear();
// Event
var eventNameFilterControl = new FilterSelectors(FilterType.Event, _feedService.GetEvents().ToList());
eventNameFilterControl.FilterChanged += FilterChanged;
filterControlContainer.Children.Add(eventNameFilterControl);
}
private FilterSelectors FindFilterSelectorByFilterType(FilterType filterType)
{
FilterSelectors result = null;
if (filterControlContainer.Children.Count > 1)
{
foreach (FilterSelectors filterSelector in filterControlContainer.Children)
{
if (filterSelector.FilterBy == filterType)
{
result = filterSelector;
break;
}
}
}
return(result);
}
private void UpdateFilterControls(Tuple <FilterType, List <object> > e)
{
// The Event filter was cleared
if (e.Item1 == FilterType.Event && e.Item2.Count() == 0)
{
RemoveFilterControls(new List <FilterType>()
{
FilterType.Year, FilterType.Category, FilterType.SessionType, FilterType.Speaker
});
}
// The Year filter was cleared
if (e.Item1 == FilterType.Year && e.Item2.Count() == 0)
{
RemoveFilterControls(new List <FilterType>()
{
FilterType.Category, FilterType.SessionType, FilterType.Speaker
});
}
// At least one Event was selected
if (e.Item1 == FilterType.Event && e.Item2.Count() > 0)
{
RemoveFilterControls(new List <FilterType>()
{
FilterType.Category, FilterType.SessionType, FilterType.Speaker, FilterType.Year
});
// Add Year filter selector
var yearValues = new List <string>();
foreach (var item in e.Item2)
{
var selectedEvent = _feedService.GetEvents().Where(x => x.Name == item.ToString()).FirstOrDefault();
yearValues.AddRange(selectedEvent.Years);
}
if (yearValues.Count > 0)
{
Application.Current.Dispatcher.Invoke(() =>
{
var yearsFilterControl = new FilterSelectors(FilterType.Year, yearValues);
yearsFilterControl.FilterChanged += FilterChanged;
filterControlContainer.Children.Add(yearsFilterControl);
});
}
}
// Add or update other filters
if (e.Item1 == FilterType.Year && e.Item2.Count() > 0 && ContainsFilterControlTypes(new List <FilterType>()
{
FilterType.Event, FilterType.Year
}))
{
// Add or update Category filter selector
if (!ContainsFilterControlTypes(new List <FilterType>()
{
FilterType.Category
}))
{
Application.Current.Dispatcher.Invoke(() =>
{
var categoriesFilterControl = new FilterSelectors(FilterType.Category, _presentationService.GetFilteredCategories(Filters));
categoriesFilterControl.FilterChanged += FilterChanged;
filterControlContainer.Children.Add(categoriesFilterControl);
});
}
else
{
Application.Current.Dispatcher.Invoke(() =>
{
var filterControl = FindFilterSelectorByFilterType(FilterType.Category);
if (filterControl != null)
{
filterControl.UpdateItems(_presentationService.GetFilteredCategories(Filters));
}
});
}
// Add or update Session Type filter selector
if (!ContainsFilterControlTypes(new List <FilterType>()
{
FilterType.SessionType
}))
{
Application.Current.Dispatcher.Invoke(() =>
{
var sessionTypeFilterControl = new FilterSelectors(FilterType.SessionType, _presentationService.GetFilteredSessionTypes(Filters));
sessionTypeFilterControl.FilterChanged += FilterChanged;
filterControlContainer.Children.Add(sessionTypeFilterControl);
});
}
else
{
Application.Current.Dispatcher.Invoke(() =>
{
var filterControl = FindFilterSelectorByFilterType(FilterType.SessionType);
if (filterControl != null)
{
filterControl.UpdateItems(_presentationService.GetFilteredSessionTypes(Filters));
}
});
}
// Add or update Speaker filter selector
if (!ContainsFilterControlTypes(new List <FilterType>()
{
FilterType.Speaker
}))
{
Application.Current.Dispatcher.Invoke(() =>
{
var speakerFilterControl = new FilterSelectors(FilterType.Speaker, _presentationService.GetFilteredSpeakers(Filters));
speakerFilterControl.FilterChanged += FilterChanged;
filterControlContainer.Children.Add(speakerFilterControl);
});
}
else
{
Application.Current.Dispatcher.Invoke(() =>
{
var filterControl = FindFilterSelectorByFilterType(FilterType.Speaker);
if (filterControl != null)
{
filterControl.UpdateItems(_presentationService.GetFilteredSpeakers(Filters));
}
});
}
}
}