public MyMenuItem Add(MyMenuItem item)
{
base.Add(item);
item.Click += (e) => ItemClicked?.Invoke(item);
MenuItemAdded?.Invoke(item);
return(item);
}
/// <summary>
/// Updates the suggestions for the current word or all text whenever
/// the text changes. Opens the suggestions if they don't exist.
/// </summary>
private void RefreshSuggestions()
{
//Clears all old suggestions.
gui.suggestions.Items.Clear();
//Builds a list of all suggested items.
var filteredSuggestions = new List <Tuple <string, string> >();
var otherSuggestions = new List <Tuple <string, string> >();
int suggestionsAllowed = 10;
//Adds each suggestion up to the max allowed.
string userText = String.Empty;
if ((!searchByWord || gui.textbox.Text == string.Empty))
{
userText = RemoveDiacritics(gui.textbox.Text.ToLower());
}
else
{
var words = gui.textbox.Text.Split(' ');
userText = RemoveDiacritics(words[words.Length - 1].ToLower());
}
//Records suggestions for StartsWith and Contains separately.
for (int i = 0; i < suggestions.Count; i++)
{
string searchText =
RemoveDiacritics(suggestions[i].Item1.ToLower());
if (searchText.StartsWith(userText))
{
filteredSuggestions.Add(suggestions[i]);
}
else if (searchText.Contains(userText) &&
filteredSuggestions.Count + otherSuggestions.Count
< suggestionsAllowed)
{
otherSuggestions.Add(suggestions[i]);
}
if (filteredSuggestions.Count == suggestionsAllowed)
{
break;
}
}
//Adds to the filtered suggestions up to the max count.
if (filteredSuggestions.Count < suggestionsAllowed)
{
for (int i = 0; i < otherSuggestions.Count; i++)
{
filteredSuggestions.Add(otherSuggestions[i]);
if (filteredSuggestions.Count == suggestionsAllowed)
{
break;
}
}
}
//Creates a gui item for each match. Matches will
//appear in sorted order since original file is sorted.
for (int i = 0; i < filteredSuggestions.Count; i++)
{
ListBoxItem item = new ListBoxItem();
item.Content = filteredSuggestions[i].Item1;
//Clicking selects the item.
item.PreviewMouseLeftButtonDown += (sender, e) =>
{
SelectSuggestion((string)item.Content);
};
//Pressing enter selects the item.
item.KeyDown += (sender, e) =>
{
if (e.Key == System.Windows.Input.Key.Enter)
{
SelectSuggestion((string)item.Content);
}
};
gui.suggestions.Items.Add(item);
MenuItemAdded?.Invoke(item);
}
//Hides or un-hides the suggestions as appropriate.
if (filteredSuggestions.Count != 0 &&
!string.IsNullOrWhiteSpace(gui.textbox.Text))
{
gui.suggestions.Visibility = System.Windows.Visibility.Visible;
}
else
{
gui.suggestions.Visibility = System.Windows.Visibility.Collapsed;
}
}