/// <inheritdoc/>
public SearchOperation Search(string term, Action <SearchItem> resultFoundCallback, Action <IList <SearchItem> > SearchCompleted)
{
var token = new CancellationTokenSource();
var operation = new SearchOperation(token);
var result = new List <SearchItem>();
operation.Result = result;
term = term.ToLower().Replace(" ", "");
Task.WhenAll(_searchCategories.Select(category =>
Task.Factory.StartNew(() => Search(category), token.Token)))
.ContinueWith(t =>
{
operation.IsCompleted = true;
SearchCompleted?.Invoke(result);
}, token.Token);
void Search(CategorySearchItems category)
{
SearchItem foundItem = null;
if (category.Items.ContainsKey(term))
{
foundItem = category.Items[term];
ResultFound(category.Items[term]);
}
foreach (var categoryItem in category.Items)
{
if (categoryItem.Key.Contains(term))
{
if (foundItem != categoryItem.Value)
{
ResultFound(categoryItem.Value);
}
}
}
}
void ResultFound(SearchItem resultItem)
{
resultFoundCallback(resultItem);
result.Add(resultItem);
}
return(operation);
}
private void Search(string term)
{
if (string.IsNullOrEmpty(term))
{
return;
}
SelectedResult = null;
ShowPopup = true;
ExecuteOnUIContext(() =>
{
SearchResults.Clear();
});
if (_lastOperation != null && !_lastOperation.IsCompleted)
{
_lastOperation?.Abort();
}
_lastOperation = _applicationSearchService.Search(term, ItemFound,
res =>
{
SearchResultsFound = res != null && res.Any();
});
}
