using DevExpress.XtraEditors.DXErrorProvider;
using System;
using System.Collections.Generic;
using System.Windows.Forms;

namespace HL_FristAidPlatform_Public
{
    public static class DXValidationExtension
    {
        private static Dictionary<int, Dictionary<int, List<DXValidationProvider>>> providerDictionary;

        static DXValidationExtension()
        {
            providerDictionary = new Dictionary<int, Dictionary<int, List<DXValidationProvider>>>();
        }

        ///<summary>
        ///对控件容器中的待验证控件进行验证，并返回验证结果。
        ///</summary>
        ///<param name="container">控件容器</param>
        ///<returns></returns>
        public static bool DXValidate(this Control container)
        {
            bool isValid = true;//验证结果

            foreach (var dict in GetProviderDictionary(container))
            {
                foreach (var provider in dict.Value)
                {
                    if (!provider.Validate())
                    {
                        //任何一个未经过验证，则设置验证结果为false
                        isValid = false;
                        //待验证控件中的任何一个验证规则未经过，当即退出，再也不验证该控件的其余规则
                        break;
                    }
                }
            }
            return isValid;
        }

        public static void CustomValidation(this Control container, Control controlToValidate, string errorText,
        Func<object, bool> validate)
        {
            CustomValidation(container, controlToValidate, errorText, validate, false, true);
        }

        private static void CustomValidation(this Control container, Control controlToValidate, string errorText, Func<object, bool> validate, bool alignRight, bool manualValidation)
        {
            //得到带验证的控件的DXValidationProvider集合。
            var dictionary = GetProviderDictionary(container);
            var providers = GetProvider(controlToValidate, dictionary);
            var provider = new DXValidationProvider();
            provider.ValidationMode = manualValidation ? ValidationMode.Manual : ValidationMode.Auto;
            provider.SetIconAlignment(controlToValidate, alignRight ? ErrorIconAlignment.MiddleRight : ErrorIconAlignment.MiddleRight);

            provider.SetValidationRule(controlToValidate, new CustomValidationRule(validate)
            {
                ErrorText = errorText,
            });

            // 将DXValidationProvider添加到待验证控件的DXValidationProvider集合中。
            providers.Add(provider);
        }

        ///<summary>
        ///返回待验证控件的DXValidationProvider集合
        ///</summary>
        ///<param name="controlToValidate">待验证控件</param>
        ///<param name="dictionary">待验证控件所在的字典表</param>
        ///<returns></returns>
        private static List<DXValidationProvider> GetProvider(Control controlToValidate, Dictionary<int, List<DXValidationProvider>> dictionary)
        {
            var key = controlToValidate.GetHashCode();
            if (dictionary.ContainsKey(key))
                return dictionary[key];
            else
            {
                var providers = new List<DXValidationProvider>();
                dictionary.Add(key, providers);
                return providers;
            }
        }

        ///<summary>
        ///返回空间容器的待验证控件字典
        ///</summary>
        ///<param name="container"></param>
        ///<returns></returns>
        private static Dictionary<int, List<DXValidationProvider>> GetProviderDictionary(Control container)
        {
            var key = container.GetHashCode();
            if (providerDictionary.ContainsKey(key))
            {
                return providerDictionary[key];
            }
            else
            {
                var providers = new Dictionary<int, List<DXValidationProvider>>();
                providerDictionary.Add(key, providers);
                return providers;
            }
        }
    }
}