public EntityHierarchy(EntityHierarchyFoldingState entityHierarchyFoldingState)
{
m_EntityHierarchyFoldingState = entityHierarchyFoldingState;
style.flexGrow = 1.0f;
m_ViewContainer = new VisualElement();
m_ViewContainer.style.flexGrow = 1.0f;
m_ViewContainer.RegisterCallback <PointerDownEvent>(evt =>
{
if (evt.button == (int)MouseButton.LeftMouse)
{
Selection.activeObject = null;
}
});
m_TreeView = new TreeView(m_TreeViewRootItems, Constants.ListView.ItemHeight, MakeTreeViewItem, ReleaseTreeViewItem, BindTreeViewItem)
{
selectionType = SelectionType.Single,
name = Constants.EntityHierarchy.FullViewName,
style = { flexGrow = 1 },
};
m_TreeView.onSelectionChange += OnLocalSelectionChanged;
m_TreeView.ItemExpandedStateChanging += (item, isExpanding) =>
{
var entityHierarchyItem = (EntityHierarchyItem)item;
if (entityHierarchyItem.NodeId.Kind == NodeKind.Scene || entityHierarchyItem.NodeId.Kind == NodeKind.SubScene)
{
m_EntityHierarchyFoldingState.OnFoldingStateChanged(entityHierarchyItem.NodeId, isExpanding);
}
};
m_TreeView.Hide();
m_ViewContainer.Add(m_TreeView);
m_ListView = new ListView(m_ListViewFilteredItems, Constants.ListView.ItemHeight, MakeListViewItem, ReleaseListViewItem, BindListViewItem)
{
selectionType = SelectionType.Single,
name = Constants.EntityHierarchy.SearchViewName,
style = { flexGrow = 1 }
};
m_ListView.Hide();
m_ViewContainer.Add(m_ListView);
m_SearchEmptyMessage = new CenteredMessageElement();
m_SearchEmptyMessage.Hide();
Add(m_SearchEmptyMessage);
#if UNITY_2020_1_OR_NEWER
m_ListView.onSelectionChange += OnLocalSelectionChanged;
#else
m_ListView.onSelectionChanged += OnSelectionChanged;
#endif
m_ItemsCache = new HierarchyItemsCache();
m_CurrentViewMode = ViewMode.Full;
Add(m_ViewContainer);
Selection.selectionChanged += OnGlobalSelectionChanged;
}
void RefreshView()
{
// This is split in two because RefreshSearchView
// can change the current view mode if no result is found.
// We need to refresh the data before deciding what to show
if (m_CurrentViewMode == ViewMode.Full)
{
m_TreeView.PrepareItemsToExpand(m_TreeViewItemsToExpand);
m_TreeView.Refresh();
}
else if (m_CurrentViewMode == ViewMode.Search)
{
RefreshSearchView();
}
switch (m_CurrentViewMode)
{
case ViewMode.Full:
TrySelect(m_SelectedItem);
m_SearchEmptyMessage.Hide();
m_ListView.Hide();
m_TreeView.Show();
m_ViewContainer.Show();
break;
case ViewMode.Search:
TrySelect(m_SelectedItem);
m_SearchEmptyMessage.Hide();
m_TreeView.Hide();
m_ListView.Show();
m_ViewContainer.Show();
break;
case ViewMode.Message:
m_SearchEmptyMessage.Show();
m_TreeView.Hide();
m_ListView.Hide();
m_ViewContainer.Hide();
break;
}
}
/// <summary>
/// Refresh tree view to update with latest information.
/// </summary>
void Refresh()
{
// System details need to be updated also.
m_SystemDetailsVisualElement.Target = m_LastSelectedItem;
m_SystemDetailsVisualElement.SearchFilter = SearchFilter;
// Check if there is search result
if (!SearchFilter.IsEmpty)
{
PopulateListViewWithSearchResults();
var hasSearchResult = m_ListViewFilteredItems.Any();
m_SystemListView.ToggleVisibility(hasSearchResult);
m_SystemTreeView.Hide();
m_SystemDetailsVisualElement.ToggleVisibility(hasSearchResult);
m_SearchEmptyMessage.ToggleVisibility(!hasSearchResult);
if (string.IsNullOrEmpty(SearchFilter.ErrorComponentType))
{
m_SearchEmptyMessage.Title = k_NoSystemsFoundTitle;
m_SearchEmptyMessage.Message = string.Empty;
}
else
{
m_SearchEmptyMessage.Title = k_ComponentTypeNotFoundTitle;
m_SearchEmptyMessage.Message = string.Format(k_ComponentTypeNotFoundContent, SearchFilter.ErrorComponentType);
}
// Remove detail section if not in the results.
if (Contains(m_SystemDetailsVisualElement) && !m_ListViewFilteredItems.Contains(m_LastSelectedItem))
{
Remove(m_SystemDetailsVisualElement);
}
}
else
{
m_SystemListView.Hide();
m_SystemTreeView.Show();
m_SearchEmptyMessage.Hide();
m_SystemDetailsVisualElement.Show();
}
SetSelection();
}
