71 lines
2.0 KiB
C#
71 lines
2.0 KiB
C#
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#if UNITY_EDITOR
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using UnityEditor;
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#endif
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using UnityEngine;
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namespace SLSFramework.General
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{
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[System.Serializable]
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public class InterfaceHolder<T> where T : class
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{
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[SerializeField] private MonoBehaviour value;
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public T Value
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{
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get
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{
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if (value == null)
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{
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Debug.LogError("value is null");
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return null;
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}
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T castValue = value as T;
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if (castValue == null)
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{
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Debug.LogError($"value cannot be cast to {typeof(T)}. It is of type {value.GetType()}");
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}
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return castValue;
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}
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}
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public InterfaceHolder(MonoBehaviour value)
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{
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this.value = value;
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}
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}
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#if UNITY_EDITOR && !ODIN_INSPECTOR
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[CustomPropertyDrawer(typeof(InterfaceHolder<>))]
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public class InterfaceHolderDrawer : PropertyDrawer
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{
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public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
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{
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EditorGUI.BeginProperty(position, label, property);
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SerializedProperty valueProperty = property.FindPropertyRelative("value");
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EditorGUI.BeginChangeCheck();
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MonoBehaviour newValue = (MonoBehaviour)EditorGUI
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.ObjectField(position, label, valueProperty.objectReferenceValue,
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typeof(MonoBehaviour), true);
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if (EditorGUI.EndChangeCheck())
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{
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if (newValue == null || newValue.GetComponent(fieldInfo.FieldType.GenericTypeArguments[0]) != null)
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{
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valueProperty.objectReferenceValue = newValue;
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}
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else
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{
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Debug.LogWarning($"Assigned object must implement interface {fieldInfo.FieldType.GenericTypeArguments[0].Name}");
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}
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}
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EditorGUI.EndProperty();
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}
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}
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#endif
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}
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