protected void AddItemToIndex(SearcherItem item, ref int lastId, Action <SearcherItem> action)
{
m_ItemList.Insert(lastId, item);
// We can only set the id here as we only know the final index of the item here.
item.OverwriteId(lastId);
item.GeneratePath();
action?.Invoke(item);
lastId++;
// This is used for sorting results between databases.
item.OverwriteDatabase(this);
if (!item.HasChildren)
{
return;
}
var childrenIds = new List <int>();
foreach (SearcherItem child in item.Children)
{
AddItemToIndex(child, ref lastId, action);
childrenIds.Add(child.Id);
}
item.OverwriteChildrenIds(childrenIds);
}
void Expand(SearcherItem item)
{
m_ExpandedResults.Add(item);
RegenerateVisibleResults();
HideUnexpandedItems();
m_ListView.Refresh();
}
public virtual VisualElement Bind(VisualElement element, SearcherItem item, ItemExpanderState expanderState, string query)
{
var indent = element.Q <VisualElement>("itemIndent");
indent.style.width = item.Depth * k_IndentDepthFactor;
var expander = element.Q <VisualElement>("itemChildExpander");
var icon = expander.Query("expanderIcon").First();
icon.ClearClassList();
switch (expanderState)
{
case ItemExpanderState.Expanded:
icon.AddToClassList("Expanded");
break;
case ItemExpanderState.Collapsed:
icon.AddToClassList("Collapsed");
break;
}
var nameLabelsContainer = element.Q <VisualElement>("labelsContainer");
nameLabelsContainer.Clear();
if (string.IsNullOrWhiteSpace(query))
{
if (string.IsNullOrEmpty(item.Help))
{
nameLabelsContainer.Add(new Label(item.Name));
}
else
{
var name = new Label(item.Name);
var help = new Label(" (" + item.Help + ")");
help.style.opacity = .5f;
nameLabelsContainer.Add(name);
nameLabelsContainer.Add(help);
}
}
else
{
SearcherHighlighter.HighlightTextBasedOnQuery(nameLabelsContainer, item.Name, query);
}
element.userData = item;
element.name = k_EntryName;
return(expander);
}
static void GetItemsToHide(SearcherItem parent, ref HashSet <SearcherItem> itemsToHide)
{
if (!parent.HasChildren)
{
itemsToHide.Add(parent);
return;
}
foreach (var child in parent.Children)
{
itemsToHide.Add(child);
GetItemsToHide(child, ref itemsToHide);
}
}
bool HasChildResult(SearcherItem item)
{
if (m_Results.Contains(item))
{
return(true);
}
foreach (var child in item.Children)
{
if (HasChildResult(child))
{
return(true);
}
}
return(false);
}
void AddResultChildren(SearcherItem item, ISet <SearcherItem> idSet)
{
if (!item.HasChildren)
{
return;
}
foreach (var child in item.Children)
{
if (!idSet.Contains(child))
{
idSet.Add(child);
m_VisibleResults.Add(child);
}
AddResultChildren(child, idSet);
}
}
public void AddChild(SearcherItem child)
{
if (child == null)
{
throw new ArgumentNullException(nameof(child));
}
if (Database != null)
{
throw new InvalidOperationException(
"Cannot add more children to an item that was already used in a database.");
}
if (Children == null)
{
Children = new List <SearcherItem>();
}
Children.Add(child);
child.OverwriteParent(this);
}
void Collapse(SearcherItem item)
{
// if it's already collapsed or not collapsed
if (!m_ExpandedResults.Remove(item))
{
// this case applies for a left arrow key press
if (item.Parent != null)
{
SetSelectedElementInResultsList(m_VisibleResults.IndexOf(item.Parent));
}
// even if it's a root item and has no parents, do nothing more
return;
}
RegenerateVisibleResults();
HideUnexpandedItems();
m_ListView.Refresh();
// RefreshListViewOn();
}
protected virtual bool Match(string query, SearcherItem item, out float score)
{
var filter = MatchFilter?.Invoke(query, item) ?? true;
return(Match(query, item.Path, out score) && filter);
}
void OverwriteParent(SearcherItem newParent)
{
Parent = newParent;
}
