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Conditonaly hide some field in Unity inspector, base on other field's value (from http://www.brechtos.com/hiding-or-disabling-inspector-properties-using-propertydrawers-within-unity-5/)
using UnityEngine;
using System;
//Original version of the ConditionalHideAttribute created by Brecht Lecluyse (www.brechtos.com)
//Modified by: -
[ AttributeUsage( AttributeTargets.Field ) ]
public class ConditionalHideAttribute : PropertyAttribute
{
public readonly string ConditionalSourceField;
public string ConditionalSourceField2 = "";
public bool HideInInspector = false;
public bool Inverse = false;
// Use this for initialization
public ConditionalHideAttribute( string conditionalSourceField )
{
ConditionalSourceField = conditionalSourceField;
}
}
using UnityEngine;
using UnityEditor;
//Original version of the ConditionalHideAttribute created by Brecht Lecluyse (www.brechtos.com)
//Modified by: -
[ CustomPropertyDrawer( typeof( ConditionalHideAttribute ) ) ]
public class ConditionalHidePropertyDrawer : PropertyDrawer
{
public override void OnGUI( Rect position, SerializedProperty property, GUIContent label )
{
var condHAtt = (ConditionalHideAttribute) attribute;
var enabled = GetConditionalHideAttributeResult( condHAtt, property );
var wasEnabled = GUI.enabled;
GUI.enabled = enabled;
if ( !condHAtt.HideInInspector || enabled )
{
EditorGUI.PropertyField( position, property, label, true );
}
GUI.enabled = wasEnabled;
}
public override float GetPropertyHeight( SerializedProperty property, GUIContent label )
{
var condHAtt = (ConditionalHideAttribute) attribute;
var enabled = GetConditionalHideAttributeResult( condHAtt, property );
if ( !condHAtt.HideInInspector || enabled )
{
return EditorGUI.GetPropertyHeight( property, label );
}
else
{
//The property is not being drawn
//We want to undo the spacing added before and after the property
return -EditorGUIUtility.standardVerticalSpacing;
}
}
private bool GetConditionalHideAttributeResult( ConditionalHideAttribute condHAtt, SerializedProperty property )
{
var enabled = true;
var propertyPath =
property.propertyPath; //returns the property path of the property we want to apply the attribute to
string conditionPath;
if ( !string.IsNullOrEmpty( condHAtt.ConditionalSourceField ) )
{
//Get the full relative property path of the sourcefield so we can have nested hiding
conditionPath =
propertyPath.Replace( property.name,
condHAtt.ConditionalSourceField ); //changes the path to the conditionalsource property path
var sourcePropertyValue = property.serializedObject.FindProperty( conditionPath );
if ( sourcePropertyValue != null )
{
enabled = CheckPropertyType( sourcePropertyValue );
}
else
{
//Debug.LogWarning("Attempting to use a ConditionalHideAttribute but no matching SourcePropertyValue found in object: " + condHAtt.ConditionalSourceField);
}
}
if ( !string.IsNullOrEmpty( condHAtt.ConditionalSourceField2 ) )
{
conditionPath =
propertyPath.Replace( property.name,
condHAtt.ConditionalSourceField2 ); //changes the path to the conditionalsource property path
var sourcePropertyValue2 = property.serializedObject.FindProperty( conditionPath );
if ( sourcePropertyValue2 != null )
{
enabled = enabled && CheckPropertyType( sourcePropertyValue2 );
}
else
{
//Debug.LogWarning("Attempting to use a ConditionalHideAttribute but no matching SourcePropertyValue found in object: " + condHAtt.ConditionalSourceField);
}
}
if ( condHAtt.Inverse ) enabled = !enabled;
return enabled;
}
private bool CheckPropertyType( SerializedProperty sourcePropertyValue )
{
switch ( sourcePropertyValue.propertyType )
{
case SerializedPropertyType.Boolean:
return sourcePropertyValue.boolValue;
case SerializedPropertyType.ObjectReference:
return sourcePropertyValue.objectReferenceValue != null;
default:
Debug.LogError( "Data type of the property used for conditional hiding [" +
sourcePropertyValue.propertyType + "] is currently not supported" );
return true;
}
}
}
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