48 lines
1.9 KiB
C#
48 lines
1.9 KiB
C#
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// https://discussions.unity.com/t/helpattribute-allows-you-to-use-helpbox-in-the-unity-inspector-window/659414/22
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using UnityEngine;
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using UnityEditor;
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public enum HelpBoxMessageType { None, Info, Warning, Error }
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public class HelpBoxAttribute : PropertyAttribute {
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public string Text;
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public HelpBoxMessageType MessageType;
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public HelpBoxAttribute(string text, HelpBoxMessageType messageType = HelpBoxMessageType.None) {
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this.Text = text;
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this.MessageType = messageType;
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}
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}
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[CustomPropertyDrawer(typeof(HelpBoxAttribute))]
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public class HelpBoxAttributeDrawer : DecoratorDrawer {
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public override float GetHeight() {
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try {
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var helpBoxAttribute = attribute as HelpBoxAttribute;
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if (helpBoxAttribute == null) return base.GetHeight();
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var helpBoxStyle = (GUI.skin != null) ? GUI.skin.GetStyle("helpbox") : null;
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return helpBoxStyle == null ? base.GetHeight() : Mathf.Max(40f, helpBoxStyle.CalcHeight(new GUIContent(helpBoxAttribute.Text), EditorGUIUtility.currentViewWidth) + 4);
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}
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catch (System.ArgumentException) {
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return 3 * EditorGUIUtility.singleLineHeight; // Handle Unity 2022.2 bug by returning default value.
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}
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}
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public override void OnGUI(Rect position) {
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if (attribute is not HelpBoxAttribute helpBoxAttribute) return;
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EditorGUI.HelpBox(position, helpBoxAttribute.Text, GetMessageType(helpBoxAttribute.MessageType));
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}
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private static MessageType GetMessageType(HelpBoxMessageType helpBoxMessageType) {
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switch (helpBoxMessageType) {
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default:
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case HelpBoxMessageType.None: return MessageType.None;
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case HelpBoxMessageType.Info: return MessageType.Info;
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case HelpBoxMessageType.Warning: return MessageType.Warning;
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case HelpBoxMessageType.Error: return MessageType.Error;
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}
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}
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}
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