public SearchPageViewModel(
Models.NiconicoSession niconicoSession,
SearchProvider searchProvider,
Services.PageManager pageManager
)
: base(pageManager)
{
NiconicoSession = niconicoSession;
SearchProvider = searchProvider;
HashSet<string> HistoryKeyword = new HashSet<string>();
foreach (var item in Database.SearchHistoryDb.GetAll().OrderByDescending(x => x.LastUpdated))
{
if (HistoryKeyword.Contains(item.Keyword))
{
continue;
}
SearchHistoryItems.Add(new SearchHistoryListItem(item, this));
HistoryKeyword.Add(item.Keyword);
}
SearchText = new ReactiveProperty<string>(_LastKeyword)
.AddTo(_CompositeDisposable);
TargetListItems = new List<SearchTarget>()
{
SearchTarget.Keyword,
SearchTarget.Tag,
SearchTarget.Niconama,
SearchTarget.Mylist,
SearchTarget.Community,
};
SelectedTarget = new ReactiveProperty<SearchTarget>(_LastSelectedTarget)
.AddTo(_CompositeDisposable);
SearchOptionVM = new ReactiveProperty<SearchOptionViewModelBase>();
SearchOptionVMDict = new Dictionary<SearchTarget, SearchOptionViewModelBase>();
SelectedTarget.Subscribe(x =>
{
RaiseSearchTargetFlags();
var keyword = SearchOptionVM.Value?.Keyword ?? "";
SearchOptionViewModelBase searchOptionVM = null;
if (SearchOptionVMDict.ContainsKey(x))
{
searchOptionVM = SearchOptionVMDict[x];
}
else
{
searchOptionVM = SearchOptioniViewModelHelper.CreateFromTarget(x);
SearchOptionVMDict.Add(x, searchOptionVM);
}
searchOptionVM.Keyword = keyword;
SearchOptionVM.Value = searchOptionVM;
});
DoSearchCommand =
SearchText.Select(x => !String.IsNullOrEmpty(x))
.ToReactiveCommand()
.AddTo(_CompositeDisposable);
SearchText.Subscribe(x =>
{
Debug.WriteLine($"検索：{x}");
});
DoSearchCommand.CanExecuteChangedAsObservable()
.Subscribe(x =>
{
Debug.WriteLine(DoSearchCommand.CanExecute());
});
DoSearchCommand.Subscribe(_ =>
{
if (SearchText.Value.Length == 0) { return; }
// Note: Keywordの管理はSearchPage側で行うべき？
SearchOptionVM.Value.Keyword = SearchText.Value;
var searchOption = SearchOptionVM.Value.MakePayload();
// 検索結果を表示
PageManager.Search(searchOption);
var searched = Database.SearchHistoryDb.Searched(SearchText.Value, SelectedTarget.Value);
var oldSearchHistory = SearchHistoryItems.FirstOrDefault(x => x.Keyword == SearchText.Value);
if (oldSearchHistory != null)
{
SearchHistoryItems.Remove(oldSearchHistory);
}
SearchHistoryItems.Insert(0, new SearchHistoryListItem(searched, this));
})
.AddTo(_CompositeDisposable);
}
public override async Task OnNavigatedToAsync(INavigationParameters parameters)
{
IsNavigationFailed.Value = false;
NavigationFailedReason.Value = null;
try
{
string keyword = null;
if (parameters.TryGetValue("keyword", out keyword))
{
keyword = Uri.UnescapeDataString(keyword);
}
SearchTarget target = SearchTarget.Keyword;
if (parameters.TryGetValue("service", out string modeString))
{
Enum.TryParse <SearchTarget>(modeString, out target);
}
else if (parameters.TryGetValue("service", out target))
{
}
var pageName = target switch
{
SearchTarget.Keyword => nameof(SearchResultKeywordPage),
SearchTarget.Tag => nameof(SearchResultTagPage),
SearchTarget.Niconama => nameof(SearchResultLivePage),
_ => null
};
if (pageName != null && keyword != null)
{
var result = await NavigationService.NavigateAsync(pageName, ("keyword", keyword));
if (!result.IsSuccess)
{
throw result.Exception;
}
}
SearchText.Value = keyword;
SelectedTarget.Value = target;
_LastSelectedTarget = target;
_LastKeyword = keyword;
DoSearchCommand.Throttle(TimeSpan.FromMilliseconds(50), _scheduler).Subscribe(_ =>
{
//await Task.Delay(50);
if (SearchText.Value?.Length == 0)
{
return;
}
if (_LastSelectedTarget == SelectedTarget.Value && _LastKeyword == SearchText.Value)
{
return;
}
// 検索結果を表示
PageManager.Search(SelectedTarget.Value, SearchText.Value);
var searched = _searchHistoryRepository.Searched(SearchText.Value, SelectedTarget.Value);
var oldSearchHistory = SearchHistoryItems.FirstOrDefault(x => x.Keyword == SearchText.Value);
if (oldSearchHistory != null)
{
SearchHistoryItems.Remove(oldSearchHistory);
}
SearchHistoryItems.Insert(0, new SearchHistoryListItemViewModel(searched, this));
})
.AddTo(_navigationDisposables);
}
catch (Exception e)
{
IsNavigationFailed.Value = true;
#if DEBUG
NavigationFailedReason.Value = e.Message;
#endif
Debug.WriteLine(e.ToString());
}
await base.OnNavigatedToAsync(parameters);
}