public virtual void ReplacePrimaryColor(string name)
{
if (name == null)
{
throw new ArgumentNullException(nameof(name));
}
var swatch = new SwatchesProvider().Swatches.FirstOrDefault(
s => string.Compare(s.Name, name, StringComparison.InvariantCultureIgnoreCase) == 0);
if (swatch == null)
{
throw new ArgumentException($"No such swatch '{name}'", nameof(name));
}
ReplacePrimaryColor(swatch);
}
public SearchOptionsViewModel(ISearchMetadataCollection metadataCollection,
ISchedulerProvider schedulerProvider,
SearchHints searchHints)
{
SearchHints = searchHints;
//TODO: options for colour
var swatches = new SwatchesProvider().Swatches;
bool binding = false;
var orderChanged = Observable.FromEventPattern<OrderChangedEventArgs>(
h => PositionMonitor.OrderChanged += h,
h => PositionMonitor.OrderChanged -= h)
.Select(evt => evt.EventArgs)
.Where(args=>args.PreviousOrder!=null && args.NewOrder.Length == args.PreviousOrder.Length)
.Select(positionChangedArgs =>
{
//reprioritise filters and highlights
return positionChangedArgs.NewOrder
.OfType<SearchOptionsProxy>()
.Select((item, index) => new {Meta=(SearchMetadata)item, index})
//.Where(x => x.index != x.Meta.Position)
.Select(x => new SearchMetadata(x.Meta, x.index))
.ToArray();
})
.Subscribe(positionChangedArgs =>
{
positionChangedArgs.ForEach(metadataCollection.AddorUpdate);
});
ReadOnlyObservableCollection<SearchOptionsProxy> data;
var userOptions = metadataCollection.Metadata.Connect()
.WhereReasonsAre(ChangeReason.Add, ChangeReason.Remove) //ignore updates because we update from here
.Transform(meta => new SearchOptionsProxy(meta, swatches, m => metadataCollection.Remove(m.SearchText)))
.SubscribeMany(so =>
{
//when a value changes, write the original value back to the cache
return so.WhenAnyPropertyChanged()
.Subscribe(_ =>metadataCollection.AddorUpdate(new SearchMetadata(metadataCollection.Metadata.Count,
so.Text, so.Filter, so.Highlight, so.UseRegex, so.IgnoreCase)));
})
.Sort(SortExpressionComparer<SearchOptionsProxy>.Ascending(proxy => proxy.Position))
.ObserveOn(schedulerProvider.MainThread)
.Bind(out data)
.Subscribe();
Data = data;
//command to add the current search to the tail collection
var searchInvoker = SearchHints.SearchRequested.Subscribe(request =>
{
schedulerProvider.Background.Schedule(() =>
{
metadataCollection.AddorUpdate(new SearchMetadata(metadataCollection.NextIndex(), request.Text, false, true, request.UseRegEx, true));
});
});
_cleanUp = new CompositeDisposable(searchInvoker,
userOptions,
searchInvoker,
orderChanged);
}