protected override void SearchCommandExecute()
{
if (DelayCTS != null && !DelayCTS.IsCancellationRequested)
{
DelayCTS.Cancel();
DelayCTS = new CancellationTokenSource();
}
if (HintsCTS != null && !HintsCTS.IsCancellationRequested)
{
HintsCTS.Cancel();
}
Task.Run(async() =>
{
await VmService.SaveSearchRequestInHistory(SearchText);
await LoadContent();
});
ContentVm.SearchCommand.Execute(null);
InvokeOnMainThread(() =>
{
HintsItems = new ObservableCollection <IHintItemVM>();
AutocomleteItems = new ObservableCollection <IAutocompleteItemVM>();
HintsVisible = false;
HistoryVisible = false;
RaisePropertyChanged(() => ContentVisible);
});
}
private void StartSearch(IContentSearchItemVM item)
{
if (DelayCTS != null && !DelayCTS.IsCancellationRequested)
{
DelayCTS.Cancel();
DelayCTS = new CancellationTokenSource();
}
if (HintsCTS != null && !HintsCTS.IsCancellationRequested)
{
HintsCTS.Cancel();
}
SetProperty(ref _searchText, item.SearchText, "SearchText");
ContentVm.SearchText = SearchText;
SearchCommand.Execute(null);
InvokeOnMainThread(() =>
{
HistoryVisible = false;
HintsVisible = false;
RaisePropertyChanged(() => ContentVisible);
});
}
protected override void OnSearchTextChanged(string searchText)
{
ContentVm.SearchText = searchText;
if (DelayCTS != null && !DelayCTS.IsCancellationRequested)
{
DelayCTS.Cancel();
DelayCTS = new CancellationTokenSource();
}
if (HintsCTS != null && !HintsCTS.IsCancellationRequested)
{
HintsCTS.Cancel();
HintsCTS = null;
}
if (ContentVm.SearchText.IsNullOrEmtpy())
{
InvokeOnMainThread(() =>
{
HintsItems = new ObservableCollection <IHintItemVM>();
AutocomleteItems = new ObservableCollection <IAutocompleteItemVM>();
HintsVisible = false;
HistoryVisible = true;
RaisePropertyChanged(() => ContentVisible);
});
return;
}
try
{
DelayCTS = new CancellationTokenSource();
Task.Run(async() =>
{
try
{
await Task.Delay(300, DelayCTS.Token);
await LoadHintsContent();
}
catch (OperationCanceledException)
{
}
}, DelayCTS.Token);
}
catch (OperationCanceledException)
{
}
}
