| Parameter | Description |
|---|---|
| flags | The flags to clear on all hierarchy nodes in the view model. |
Clears the specified flags on all hierarchy nodes.
The following example creates a context menu item that collapses all nodes in the Hierarchy window except the paths to the selected items. The action appears in the Hierarchy Samples submenu of the context menu. It uses ClearFlags to perform the initial collapse.
using System; using Unity.Hierarchy; using Unity.Hierarchy.Editor; using UnityEditor; using UnityEngine.UIElements;
namespace Unity.HierarchySamples.Editor { class CollapseOthers { [InitializeOnLoadMethod] static void Initialize() { HierarchyWindow.PopulateContextMenu += OnPopulateContextMenu; }
static void OnPopulateContextMenu(HierarchyWindow window, HierarchyView view, HierarchyViewItem item, DropdownMenu menu) { menu.AppendAction("Hierarchy Samples/Collapse Others", a => { // Capture selected and expanded nodes. int selectedAndExpandedCount = view.ViewModel.HasFlagsCount(HierarchyNodeFlags.Selected | HierarchyNodeFlags.Expanded); Span<HierarchyNode> expandedAndSelectedNodes = selectedAndExpandedCount < 16 ? stackalloc HierarchyNode[selectedAndExpandedCount] : new HierarchyNode[selectedAndExpandedCount]; view.ViewModel.GetNodesWithFlags(HierarchyNodeFlags.Selected | HierarchyNodeFlags.Expanded, expandedAndSelectedNodes);
// Create a flags change scope. This is an optimization to avoid triggering an update if no flags // actually changed after the operation. using (_ = new HierarchyViewModelFlagsChangeScope(view.ViewModel)) { // Collapse all nodes. view.ViewModel.ClearFlags(HierarchyNodeFlags.Expanded);
// Expand parents of all selected nodes. foreach (ref readonly var node in view.ViewModel.EnumerateNodesWithFlags(HierarchyNodeFlags.Selected)) { var parent = view.ViewModel.GetParent(node); if (parent == HierarchyNode.Null || parent == view.Source.Root) continue; view.ViewModel.SetFlagsRecursive(parent, HierarchyNodeFlags.Expanded, HierarchyTraversalDirection.Parents); }
// Expand all nodes that were previously expanded and selected. view.Expand(expandedAndSelectedNodes); }
}, _ => item == null || (view.ViewModel.HasFlagsCount(HierarchyNodeFlags.Selected) == 0) ? DropdownMenuAction.Status.Disabled : DropdownMenuAction.Status.Normal); } } }
| Parameter | Description |
|---|---|
| node | The hierarchy node to clear the flags on. |
| flags | The flags to clear on the hierarchy node. |
Clears the specified flags on the hierarchy node.
| Parameter | Description |
|---|---|
| nodes | The hierarchy nodes to clear the flags on. |
| flags | The flags to clear on the specified hierarchy nodes. |
int The number of nodes that had their flags cleared.
Clears the specified flags on the hierarchy nodes.
Null or invalid nodes are ignored.
| Parameter | Description |
|---|---|
| indices | The hierarchy node indices to clear the flags on. |
| flags | The flags to clear on the hierarchy nodes at the specified indices. |
int The number of nodes that had their flags cleared.
Clears the specified flags on the hierarchy node indices.
Invalid node indices are ignored.