/// <summary>
/// Retrieves the suggestions from locator and displays them in a tableview below the search field.
/// </summary>
private async Task GetSuggestionsFromLocatorAsync()
{
// Get the suggestions
var suggestions = await _viewModel.GetLocationSuggestionsAsync(_homeLocationSearchBar.Text);
// Only show the floors tableview if the buildings in view have more than one floor
if (suggestions?.Any() ?? false)
{
// Show the tableview with autosuggestions and populate it
_autosuggestionsTableView.Hidden = false;
// Unsubscribe from events to prevent memory leak
if (_suggestionSource != null)
{
_suggestionSource.TableRowSelected -= TableSource_TableRowSelected;
}
// Create new table source and use it
_suggestionSource = new AutosuggestionsTableSource(suggestions, false);
_suggestionSource.TableRowSelected += TableSource_TableRowSelected;
_autosuggestionsTableView.Source = _suggestionSource;
_autosuggestionsTableView.ReloadData();
}
else
{
_autosuggestionsTableView.Hidden = true;
}
}
internal LocationSearchCard(MapViewModel viewModel)
{
_viewModel = viewModel;
_suggestionSource = new AutosuggestionsTableSource(null, true);
_autoSuggestionsTableView = new SelfSizedTableView
{
TranslatesAutoresizingMaskIntoConstraints = false,
Hidden = true, // must be hidden by default for voiceover
BackgroundColor = UIColor.Clear,
SeparatorColor = UIColor.SystemGrayColor,
Source = _suggestionSource,
RowHeight = UITableView.AutomaticDimension,
EstimatedRowHeight = 50
};
_searchBar = new UISearchBar
{
TranslatesAutoresizingMaskIntoConstraints = false,
BackgroundImage = new UIImage(),
Placeholder = "LocationSearchBarPlaceholder".Localize(),
SearchBarStyle = UISearchBarStyle.Minimal,
ShowsCancelButton = false,
TintColor = ApplicationTheme.ActionBackgroundColor
};
_headerLabel = new UILabel
{
TranslatesAutoresizingMaskIntoConstraints = false,
TextColor = ApplicationTheme.ForegroundColor,
Font = ApplicationTheme.HeaderFont
};
AddSubviews(_headerLabel, _searchBar, _autoSuggestionsTableView);
_headerHeightConstraint = _headerLabel.HeightAnchor.ConstraintGreaterThanOrEqualTo(40);
_tableviewBottomConstraint = _autoSuggestionsTableView.BottomAnchor.ConstraintLessThanOrEqualTo(BottomAnchor, -ApplicationTheme.Margin * 2);
NSLayoutConstraint.ActivateConstraints(new[]
{
_headerLabel.LeadingAnchor.ConstraintEqualTo(LeadingAnchor, ApplicationTheme.Margin),
_headerLabel.TrailingAnchor.ConstraintEqualTo(TrailingAnchor, -ApplicationTheme.Margin),
_headerLabel.TopAnchor.ConstraintEqualTo(TopAnchor, ApplicationTheme.Margin),
_searchBar.LeadingAnchor.ConstraintEqualTo(_headerLabel.LeadingAnchor),
_searchBar.TrailingAnchor.ConstraintEqualTo(_headerLabel.TrailingAnchor),
_searchBar.TopAnchor.ConstraintEqualTo(_headerLabel.BottomAnchor),
_searchBar.HeightAnchor.ConstraintEqualTo(56),
_autoSuggestionsTableView.TopAnchor.ConstraintEqualTo(_searchBar.BottomAnchor),
_autoSuggestionsTableView.LeadingAnchor.ConstraintEqualTo(_headerLabel.LeadingAnchor),
_autoSuggestionsTableView.TrailingAnchor.ConstraintEqualTo(_headerLabel.TrailingAnchor),
BottomAnchor.ConstraintGreaterThanOrEqualTo(_searchBar.BottomAnchor, ApplicationTheme.Margin),
});
_searchBar.TextChanged += Search_textChanged;
_searchBar.SearchButtonClicked += Search_buttonClicked;
_searchBar.OnEditingStarted += Search_EditingStarted;
_searchBar.CancelButtonClicked += Search_CancelClicked;
_suggestionSource.TableRowSelected += SuggestionSource_RowSelected;
_viewModel.PropertyChanged += ViewModel_PropertyChanged;
}
