private void UpdateTopResult()
{
if (!SearchRootCategories.Any())
{
TopResult = null;
return;
}
// If SearchRootCategories has at least 1 element, it has at least 1 member.
var firstMemberGroup = SearchRootCategories.First().MemberGroups.First();
var topMemberGroup = new SearchMemberGroup(firstMemberGroup.FullyQualifiedName);
topMemberGroup.AddMember(firstMemberGroup.Members.First());
TopResult = topMemberGroup;
}
/// <summary>
/// Performs a search and updates the observable SearchResults property.
/// </summary>
/// <param name="query"> The search query </param>
public void SearchAndUpdateResults(string query)
{
if (Visible != true)
{
return;
}
// deselect the last selected item
if (visibleSearchResults.Count > SelectedIndex)
{
visibleSearchResults[SelectedIndex].IsSelected = false;
}
// if the search query is empty, go back to the default treeview
if (string.IsNullOrEmpty(query))
{
return;
}
// clear visible results list
visibleSearchResults.Clear();
foreach (var category in SearchRootCategories)
{
category.DisposeTree();
}
SearchRootCategories.Clear();
if (string.IsNullOrEmpty(query))
{
return;
}
var result =
Model.Search(query).Where(r => r.IsVisibleInSearch).Take(MaxNumSearchResults).ToList();
// Add top result
var firstRes = result.FirstOrDefault();
if (firstRes == null)
{
return; //No results
}
var topResultCategory = new RootNodeCategoryViewModel("Top Result");
SearchRootCategories.Add(topResultCategory);
var copy = MakeNodeSearchElementVM(firstRes);
var catName = MakeShortCategoryString(firstRes.FullCategoryName);
var breadCrumb = new NodeCategoryViewModel(catName)
{
IsExpanded = true
};
breadCrumb.Entries.Add(copy);
topResultCategory.SubCategories.Add(breadCrumb);
topResultCategory.Visibility = true;
topResultCategory.IsExpanded = true;
SearchRootCategories.AddRange(CategorizeEntries(result, true));
visibleSearchResults.AddRange(SearchRootCategories.SelectMany(GetVisibleSearchResults));
if (visibleSearchResults.Any())
{
SelectedIndex = 0;
visibleSearchResults[0].IsSelected = true;
}
SearchResults.Clear();
foreach (var x in visibleSearchResults)
{
SearchResults.Add(x);
}
}
