/// <summary>
/// When down key is pressed, selected element should move forward.
/// When up key is pressed, selected element should move back.
/// </summary>
public void MoveSelection(Direction direction)
{
var oldItem = FilteredResults.FirstOrDefault(item => item.IsSelected);
if (oldItem == null)
{
return;
}
int newItemIndex = FilteredResults.IndexOf(oldItem);
if ((newItemIndex <= 0 && direction == Direction.Up) ||
(newItemIndex >= FilteredResults.Count() - 1 && direction == Direction.Down))
{
return;
}
if (direction == Direction.Down)
{
newItemIndex++;
}
else
{
newItemIndex--;
}
oldItem.IsSelected = false;
var newItem = FilteredResults.ElementAt(newItemIndex);
newItem.IsSelected = true;
}
private void ShowResults()
{
SearchResultsList.SuspendLayout();
SearchResultsList.Items.Clear();
if (AlwaysShowList || !IsSearchBoxEmpty())
{
var topResults = FilteredResults.Count() > MaxResults?FilteredResults.Take(MaxResults).ToList() : FilteredResults;
bool first = true;
foreach (var item in topResults)
{
var name = GetNameForObject(item);
var hintText = GetHintForObject(item);
var emphasis = GetHintEmphasisRangeForObject(item);
var image = OnGetIconForItem != null?OnGetIconForItem(item) : null;
var menuItem = new ToolStripButtonWithHint(name, image, hintText);
menuItem.EmphasisStart = emphasis.X;
menuItem.EmphasisEnd = emphasis.Y;
SearchResultsList.Items.Add(menuItem);
if (first)
{
menuItem.Select();
first = false;
}
menuItem.Click += MenuItemClick;
}
var unshownCount = FilteredResults.Count() - topResults.Count();
if (unshownCount > 0)
{
SearchResultsList.Items.Add(new ToolStripLabel(String.Format(" + {0} more (continue typing to filter further)", unshownCount))
{
ForeColor = Color.Gray
});
}
SearchResultsList.ResumeLayout();
if (!SearchResultsList.Visible)
{
SearchResultsList.Show(new Point(Left, Bottom));
}
}
else
{
SearchResultsList.ResumeLayout();
SearchResultsList.Hide();
}
}
