using System;
using System.Collections.Generic;

namespace XGame.Framework.UI
{
    public abstract class UIViewModule : IUIViewModel, IUIVMInternal, IDisposable
    {
        private HashSet<INestedInternal> _nestedViews;
        void IUIVMInternal.Init(IUIPanel panel, IUIViewAdapter adapter)
        {
            Init(panel as IComponentGetter, adapter);
        }
        void IUIVMInternal.Init(IUINested nested, IUIViewAdapter adapter)
        {
            Init(nested as IComponentGetter, adapter);
        }
        void IUIVMInternal.EnableChildren(object intent)
        {
            if (_nestedViews == null)
                return;
            foreach (var nestedView in _nestedViews)
            {
                nestedView.EnableByParent(intent);
            }
        }

        void IUIVMInternal.DisableChildren()
        {
            if (_nestedViews == null)
                return;
            foreach (var nestedView in _nestedViews)
            {
                nestedView.DisableByParent();
            }
        }
        private void Init(IComponentGetter getter, IUIViewAdapter adapter)
        {
            BindComponents(getter, adapter);
            CustomBind(getter, adapter);
        }
        protected abstract void BindComponents(IComponentGetter getter, IUIViewAdapter adapter);
        /// <summary>
        /// 自定义绑定，有需要的重载
        /// </summary>
        /// <param name="getter"></param>
        protected virtual void CustomBind(IComponentGetter getter, IUIViewAdapter adapter)
        {
        }

        public void AddChild(INestedView nestedView)
        {
            if (nestedView is INestedInternal temp)
            {
                _nestedViews ??= new HashSet<INestedInternal>();
                _nestedViews.Add(temp);
            }
        }
        public void RemoveChild(INestedView nestedView)
        {
            if (_nestedViews == null) return;
            if (nestedView is INestedInternal temp)
            {
                _nestedViews.Remove(temp);
            }
        }
        void IDisposable.Dispose()
        {
            if (_nestedViews != null)
            {
                foreach (var nestedView in _nestedViews)
                {
                    (nestedView as IDisposable)?.Dispose();
                }
                _nestedViews.Clear();
            }
        }
    }
}