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using UnityEditorInternal;
using UnityEngine;
using UnityEngine.UI;
namespace UnityEditor.UI
{
[CustomPropertyDrawer(typeof(Dropdown.OptionDataList), true)]
class DropdownOptionListDrawer : PropertyDrawer
{
private ReorderableList m_ReorderableList;
private void Init(SerializedProperty property)
{
if (m_ReorderableList != null)
return;
SerializedProperty array = property.FindPropertyRelative("m_Options");
m_ReorderableList = new ReorderableList(property.serializedObject, array);
m_ReorderableList.drawElementCallback = DrawOptionData;
m_ReorderableList.drawHeaderCallback = DrawHeader;
m_ReorderableList.elementHeight += 16;
}
public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
{
Init(property);
m_ReorderableList.DoList(position);
}
private void DrawHeader(Rect rect)
{
GUI.Label(rect, "Options");
}
private void DrawOptionData(Rect rect, int index, bool isActive, bool isFocused)
{
SerializedProperty itemData = m_ReorderableList.serializedProperty.GetArrayElementAtIndex(index);
SerializedProperty itemText = itemData.FindPropertyRelative("m_Text");
SerializedProperty itemImage = itemData.FindPropertyRelative("m_Image");
RectOffset offset = new RectOffset(0, 0, -1, -3);
rect = offset.Add(rect);
rect.height = EditorGUIUtility.singleLineHeight;
EditorGUI.PropertyField(rect, itemText, GUIContent.none);
rect.y += EditorGUIUtility.singleLineHeight;
EditorGUI.PropertyField(rect, itemImage, GUIContent.none);
}
public override float GetPropertyHeight(SerializedProperty property, GUIContent label)
{
Init(property);
return m_ReorderableList.GetHeight();
}
}
}
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