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Manipulators.cs
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37 lines (33 loc) · 959 Bytes
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// Unity C# reference source
// Copyright (c) Unity Technologies. For terms of use, see
// https://unity3d.com/legal/licenses/Unity_Reference_Only_License
using System.Collections.Generic;
namespace UnityEngine.UIElements
{
public interface IManipulator
{
VisualElement target { get; set; }
}
public abstract class Manipulator : IManipulator
{
protected abstract void RegisterCallbacksOnTarget();
protected abstract void UnregisterCallbacksFromTarget();
VisualElement m_Target;
public VisualElement target
{
get { return m_Target; }
set
{
if (target != null)
{
UnregisterCallbacksFromTarget();
}
m_Target = value;
if (target != null)
{
RegisterCallbacksOnTarget();
}
}
}
}
}