コード例 #1
0
        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);
        }
コード例 #2
0
        public SearchOptionsViewModel(ISearchMetadataCollection metadataCollection, ISchedulerProvider schedulerProvider)
        {
            //TODO: options for colour

            var swatches = new SwatchesProvider().Swatches;
            
            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.Add(new SearchMetadata(so.Text, so.Filter, so.Highlight)));
                })
                .Sort(SortExpressionComparer<SearchOptionsProxy>.Ascending(proxy=>proxy.Text))
                .ObserveOn(schedulerProvider.MainThread)
                .Bind(out data)
                .Subscribe();

            Data = data;

            AddSearchCommand = new Command(() =>
            {
                    metadataCollection.Add(new SearchMetadata(SearchText,false,true));
                    SearchText = string.Empty;

            }, () => SearchText.IsLongerThanOrEqualTo(3) && !metadataCollection.Metadata.Lookup((CaseInsensitiveString)SearchText).HasValue);


            var commandRefresher = this.WhenValueChanged(vm => vm.SearchText)
                                    .Subscribe(_ => ((Command) AddSearchCommand).Refresh());
            
            //User feedback to guide them whilst typing
            SearchHint = this.WhenValueChanged(vm => vm.SearchText)
                            .Select(text =>
                            {
                                if (string.IsNullOrEmpty(text)) return "Type to highlight";
                                return text.Length < 3 ? "Enter at least 3 characters" : "Hit enter for more options";
                            }).ForBinding();
            
            _cleanUp = new CompositeDisposable(commandRefresher, userOptions, SearchHint);
        }