public async Task StartSearch(string startingText = "")
{
if (_searchBox == null || _searchBox.Visibility == Visibility.Visible)
{
return;
}
HideSamplePicker();
HamburgerMenu.IsPaneOpen = true;
_searchBox.Text = startingText;
_searchButton.Visibility = Visibility.Collapsed;
_searchBox.Visibility = Visibility.Visible;
// We need to wait for the textbox to be created to focus it (only first time).
TextBox innerTextbox = null;
do
{
innerTextbox = _searchBox.FindDescendant <TextBox>();
innerTextbox?.Focus(FocusState.Programmatic);
if (innerTextbox == null)
{
await Task.Delay(150);
}
}while (innerTextbox == null);
}
private void UpdateTokensCounter(TokenizingTextBoxItem ttbi)
{
var maxTokensCounter = (TextBlock)_autoSuggestBox?.FindDescendant(PART_TokensCounter);
if (maxTokensCounter == null)
{
return;
}
void OnTokenCountChanged(TokenizingTextBox ttb, object value = null)
{
var itemsSource = ttb.ItemsSource as InterspersedObservableCollection;
var currentTokens = itemsSource.ItemsSource.Count;
var maxTokens = ttb.MaximumTokens;
maxTokensCounter.Text = $"{currentTokens}/{maxTokens}";
maxTokensCounter.Visibility = Visibility.Visible;
maxTokensCounter.Foreground = (currentTokens >= maxTokens)
? new SolidColorBrush(Colors.Red)
: _autoSuggestBox.Foreground;
}
ttbi.Owner.TokenItemAdded -= OnTokenCountChanged;
ttbi.Owner.TokenItemRemoved -= OnTokenCountChanged;
if (Content is ITokenStringContainer str && str.IsLast && ttbi?.Owner != null && ttbi.Owner.ReadLocalValue(TokenizingTextBox.MaximumTokensProperty) != DependencyProperty.UnsetValue)
{
ttbi.Owner.TokenItemAdded += OnTokenCountChanged;
ttbi.Owner.TokenItemRemoved += OnTokenCountChanged;
OnTokenCountChanged(ttbi.Owner);
}
private void PrimaryWindowCoreLayout_Loaded(object sender, RoutedEventArgs e)
{
var textBox = AutoSuggestBox.FindDescendant <TextBox>();
textBox.TextCompositionStarted += TextBox_TextCompositionStarted;
textBox.TextCompositionEnded += TextBox_TextCompositionEnded;
textBox.TextChanged += TextBox_TextChanged;
}
private void ConnectToSearch()
{
var searchButton = HamburgerMenu.FindDescendantByName("SearchButton") as Button;
_searchBox = HamburgerMenu.FindDescendantByName("SearchBox") as AutoSuggestBox;
if (_searchBox == null || searchButton == null)
{
return;
}
searchButton.Click += async(sender, args) =>
{
HamburgerMenu.IsPaneOpen = true;
_searchBox.Text = string.Empty;
// We need to wait for the textbox to be created to focus it (only first time).
TextBox innerTextbox = null;
do
{
innerTextbox = _searchBox.FindDescendant <TextBox>();
innerTextbox?.Focus(FocusState.Programmatic);
if (innerTextbox == null)
{
await Task.Delay(150);
}
}while (innerTextbox == null);
};
_searchBox.DisplayMemberPath = "Name";
_searchBox.TextMemberPath = "Name";
_searchBox.QuerySubmitted += (sender, args) =>
{
var sample = args.ChosenSuggestion as Sample;
if (sample != null)
{
NavigateToSample(sample);
}
else
{
NavigationFrame.Navigate(typeof(SamplePicker), _searchBox.Text);
}
};
_searchBox.TextChanged += (sender, args) =>
{
if (args.Reason != AutoSuggestionBoxTextChangeReason.UserInput)
{
return;
}
UpdateSearchSuggestions();
};
}
private void OnASBLoaded(object sender, RoutedEventArgs e)
{
if (_autoSuggestTextBox != null)
{
_autoSuggestTextBox.PreviewKeyDown -= this.AutoSuggestTextBox_PreviewKeyDown;
}
_autoSuggestTextBox = _autoSuggestBox.FindDescendant <TextBox>() as TextBox;
_autoSuggestTextBox.PreviewKeyDown += this.AutoSuggestTextBox_PreviewKeyDown;
}
private void OnASBLoaded(object sender, RoutedEventArgs e)
{
UpdateTokensCounter(this);
// Local function for Selection changed
void AutoSuggestTextBox_SelectionChanged(object box, RoutedEventArgs args)
{
if (!(IsAllSelected || TokenizingTextBox.IsShiftPressed || Owner.IsClearingForClick))
{
Owner.DeselectAllTokensAndText(this);
}
// Ensure flag is always reset
Owner.IsClearingForClick = false;
}
// local function for clearing selection on interaction with text box
async void AutoSuggestTextBox_TextChangingAsync(TextBox o, TextBoxTextChangingEventArgs args)
{
// remove any selected tokens.
if (Owner.SelectedItems.Count > 1)
{
await Owner.RemoveAllSelectedTokens();
}
}
if (_autoSuggestTextBox != null)
{
_autoSuggestTextBox.PreviewKeyDown -= this.AutoSuggestTextBox_PreviewKeyDown;
_autoSuggestTextBox.TextChanging -= AutoSuggestTextBox_TextChangingAsync;
_autoSuggestTextBox.SelectionChanged -= AutoSuggestTextBox_SelectionChanged;
_autoSuggestTextBox.SelectionChanging -= AutoSuggestTextBox_SelectionChanging;
}
_autoSuggestTextBox = _autoSuggestBox.FindDescendant <TextBox>() as TextBox;
if (_autoSuggestTextBox != null)
{
_autoSuggestTextBox.PreviewKeyDown += this.AutoSuggestTextBox_PreviewKeyDown;
_autoSuggestTextBox.TextChanging += AutoSuggestTextBox_TextChangingAsync;
_autoSuggestTextBox.SelectionChanged += AutoSuggestTextBox_SelectionChanged;
_autoSuggestTextBox.SelectionChanging += AutoSuggestTextBox_SelectionChanging;
AutoSuggestTextBoxLoaded?.Invoke(this, e);
}
}
public async Task StartSearch(string startingText = null)
{
if (_searchBox == null || _searchBox.Visibility == Visibility.Visible)
{
return;
}
var currentSearchText = _searchBox.Text;
_searchBox.Text = string.Empty;
if (!string.IsNullOrWhiteSpace(startingText))
{
_searchBox.Text = startingText;
}
else
{
_searchBox.Text = currentSearchText;
}
_searchButton.Visibility = Visibility.Collapsed;
_searchBox.Visibility = Visibility.Visible;
_searchBox.Focus(FocusState.Programmatic);
// We need to wait for the textbox to be created to focus it (only first time).
TextBox innerTextbox = null;
do
{
innerTextbox = _searchBox.FindDescendant <TextBox>();
innerTextbox?.Focus(FocusState.Programmatic);
if (innerTextbox == null)
{
await Task.Delay(150);
}
}while (innerTextbox == null);
}