#if UNITY_EDITOR
using UnityEditor;
using UnityEngine;
using UnityEngine.UI;

namespace AdaptUI
{
    [CustomEditor(typeof(UIVerticalLayoutGroup))]
    [CanEditMultipleObjects]
    public class UIVerticalLayoutGroupEditor : Editor
    {
        private SerializedProperty defaultLayout;
        private SerializedProperty iPhoneLayout;
        private SerializedProperty iPadLayout;

        private void OnEnable()
        {
            defaultLayout = serializedObject.FindProperty("defaultLayout");
            iPhoneLayout = serializedObject.FindProperty("iPhoneLayout");
            iPadLayout = serializedObject.FindProperty("iPadLayout");
        }

        public override void OnInspectorGUI()
        {
            UIVerticalLayoutGroup script = (UIVerticalLayoutGroup)target;
            VerticalLayoutGroup vertical = script.GetComponent<VerticalLayoutGroup>();

            EditorGUILayout.Space();
            EditorGUILayout.LabelField("UI 垂直布局", EditorStyles.boldLabel);

            DrawLayoutEditor(script, "默认布局", ref script.defaultLayout, vertical);
            DrawLayoutEditor(script, "iPhone 布局", ref script.iPhoneLayout, vertical);
            DrawLayoutEditor(script, "iPad 布局", ref script.iPadLayout, vertical);

            EditorGUILayout.Space();
            if (GUILayout.Button("应用当前布局"))
            {
                script.ApplyLayout();
            }

            serializedObject.ApplyModifiedProperties();
        }

        private void DrawLayoutEditor(UIVerticalLayoutGroup script, string title, ref UILayoutData layout, VerticalLayoutGroup verticalLayout)
        {
            EditorGUILayout.LabelField(title, EditorStyles.boldLabel);
            EditorGUI.indentLevel++;

            EditorGUILayout.LabelField("Padding", EditorStyles.boldLabel);
            layout.paddingLeft = EditorGUILayout.IntField("Left", layout.paddingLeft);
            layout.paddingRight = EditorGUILayout.IntField("Right", layout.paddingRight);
            layout.paddingTop = EditorGUILayout.IntField("Top", layout.paddingTop);
            layout.paddingBottom = EditorGUILayout.IntField("Bottom", layout.paddingBottom);

            layout.spacing = EditorGUILayout.FloatField("Spacing", layout.spacing);
            layout.childAlignment = (TextAnchor)EditorGUILayout.EnumPopup("Child Alignment", layout.childAlignment);
            layout.reverseArrangement = EditorGUILayout.Toggle("Reverse Arrangement", layout.reverseArrangement);
            layout.controlChildWidth = EditorGUILayout.Toggle("Control Child Width", layout.controlChildWidth);
            layout.controlChildHeight = EditorGUILayout.Toggle("Control Child Height", layout.controlChildHeight);
            layout.useChildScaleWidth = EditorGUILayout.Toggle("Use Child Scale Width", layout.useChildScaleWidth);
            layout.useChildScaleHeight = EditorGUILayout.Toggle("Use Child Scale Height", layout.useChildScaleHeight);
            layout.childForceExpandWidth = EditorGUILayout.Toggle("Child Force Expand Width", layout.childForceExpandWidth);
            layout.childForceExpandHeight = EditorGUILayout.Toggle("Child Force Expand Height", layout.childForceExpandHeight);

            if (GUILayout.Button("应用 " + title + " 布局"))
            {
                verticalLayout.padding.left = layout.paddingLeft;
                verticalLayout.padding.right = layout.paddingRight;
                verticalLayout.padding.top = layout.paddingTop;
                verticalLayout.padding.bottom = layout.paddingBottom;
                verticalLayout.spacing = layout.spacing;
                verticalLayout.childAlignment = layout.childAlignment;
                verticalLayout.reverseArrangement = layout.reverseArrangement;
                verticalLayout.childControlWidth = layout.controlChildWidth;
                verticalLayout.childControlHeight = layout.controlChildHeight;
                verticalLayout.childScaleWidth = layout.useChildScaleWidth;
                verticalLayout.childScaleHeight = layout.useChildScaleHeight;
                verticalLayout.childForceExpandWidth = layout.childForceExpandWidth;
                verticalLayout.childForceExpandHeight = layout.childForceExpandHeight;

                Undo.RecordObject(script, "Set " + title + " Layout");
                EditorUtility.SetDirty(script);
            }

            EditorGUI.indentLevel--;
            EditorGUILayout.Space();
        }
    }
}
#endif