35 lines
1.4 KiB
C#
35 lines
1.4 KiB
C#
using UnityEditor;
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using UnityEngine;
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using UnityEngine.UIElements;
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namespace Attributes.Editor
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{
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[CustomPropertyDrawer(typeof(RequireAttribute))]
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public class RequireAttributeDrawer : PropertyDrawer
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{
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private readonly string HELPBOX_CONTENT = "Property has to be set!";
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public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
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{
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bool isNull = !property.objectReferenceValue;
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if (isNull) position.height = EditorGUIUtility.singleLineHeight;
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EditorGUI.PropertyField(position, property, label);
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if (isNull)
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{
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position.y += position.height + EditorGUIUtility.standardVerticalSpacing;
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position.height = EditorStyles.helpBox.CalcHeight(new GUIContent(HELPBOX_CONTENT),
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EditorGUIUtility.currentViewWidth) + 10.0f;
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EditorGUI.HelpBox(position, HELPBOX_CONTENT, MessageType.Error);
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}
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}
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public override float GetPropertyHeight(SerializedProperty property, GUIContent label)
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{
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if (property.objectReferenceValue) return EditorGUIUtility.singleLineHeight;
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return EditorGUIUtility.singleLineHeight + EditorGUIUtility.standardVerticalSpacing + EditorStyles.helpBox.CalcHeight(new GUIContent(HELPBOX_CONTENT), EditorGUIUtility.currentViewWidth) + 10.0f;
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}
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}
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} |