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Unity Engine

DoesNotHaveFlags

Gets whether or not all of the specified flags are not set on any hierarchy node.
Read time 2 minutesLast updated 12 days ago

Definition

  • Type: Method
  • Namespace: Unity.Hierarchy
  • Assembly: UnityEngine.HierarchyCoreModule

DoesNotHaveFlags(HierarchyNodeFlags)

Gets whether or not all of the specified flags are not set on any hierarchy node.
public bool DoesNotHaveFlags(HierarchyNodeFlags flags)

Parameters

flags

HierarchyNodeFlags
The flags to check across all hierarchy nodes.

Returns

Type

Description

bool
true
if none of the nodes have all of the flags set, 
false
otherwise.

DoesNotHaveFlags(HierarchyNode, HierarchyNodeFlags)

Gets whether or not all of the specified flags are not set on the hierarchy node.
public bool DoesNotHaveFlags(in HierarchyNode node, HierarchyNodeFlags flags)

Parameters

node

HierarchyNode
The hierarchy node to check for the absence of the specified flags.

flags

HierarchyNodeFlags
The flags to verify are absent on the hierarchy node.

Returns

Type

Description

bool
true
if all of the flags are not set, 
false
otherwise.

Remarks

The following example displays how many children each collapsed item has in the Hierarchy window. It uses 
DoesNotHaveFlags
to check whether a node is collapsed and has children before adding the label to the left of the item name. To use this example, save the script in a folder called 
Assets/Editor/CountWhenCollapsed
. Scripts in an 
Editor
folder can use the Hierarchy module API without additional setup. If you save the script outside of an 
Editor
folder, you must enable the Hierarchy built-in module in the Package Manager window, which also adds the module to your Player builds.

Examples

using Unity.Hierarchy;using Unity.Hierarchy.Editor;using UnityEditor;using UnityEngine.UIElements;namespace Unity.HierarchySamples.Editor{    class CountWhenCollapsed    {        const string k_ChildrenCountUssClassName = "hierarchy-children-count";        [InitializeOnLoadMethod]        static void Initialize()        {            HierarchyWindow.BindViewItem += OnBindViewItem;        }        static void OnBindViewItem(HierarchyWindow window, HierarchyView view, HierarchyViewItem item)        {            HierarchyNode node = item.Node;            int childrenCount = view.ViewModel.GetChildrenCount(node);            Label label = item.LeftCustomContainer.Q<Label>(className: k_ChildrenCountUssClassName);            if (childrenCount > 0 && view.ViewModel.DoesNotHaveFlags(node, HierarchyNodeFlags.Expanded))            {                if (label == null)                {                    label = new Label();                    label.AddToClassList(k_ChildrenCountUssClassName);                    item.LeftCustomContainer.Add(label);                }                label.text = $"({childrenCount})";                label.style.display = DisplayStyle.Flex;            }            else            {                if (label != null)                    label.style.display = DisplayStyle.None;            }        }    }}