Revit.Plugln/FWindSoft/FWindSoft.Wpf/SystemTypeExtensions/DependencyObjectExtension.cs


using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;

namespace FWindSoft.Wpf
{
    /// <summary>
    /// 依赖属性扩展
    /// </summary>
    public static class DependencyObjectExtensions
    {
        public static bool HasError(this DependencyObject depObject)
        {
            bool flag = false;
            #region 验证修改
            if (Validation.GetHasError(depObject))
            {
                flag = true;
                return flag;
            }
            #endregion
            for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObject); i++)
            {
                var child = VisualTreeHelper.GetChild(depObject, i);             
                if (child.HasError())
                {
                    flag = true;
                    break;
                }
            }
            return flag;
        }
        /// <summary>
        /// 判定元素是否错误
        /// </summary>
        /// <param name="depObject"></param>
        /// <param name="errorObject">返回错误元素</param>
        /// <returns></returns>
        public static bool HasError(this DependencyObject depObject,out DependencyObject errorObject)
        {
            bool flag = false;
            errorObject = null;
            if (Validation.GetHasError(depObject))
            {
                flag = true;
                errorObject = depObject;
                return flag;
            }

            for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObject); i++)
            {
                var child = VisualTreeHelper.GetChild(depObject, i);            
                if (child.HasError(out errorObject))
                {
                    flag = true;
                    break;
                }
            }
            return flag;
        }
        public static List<T> GetSpecifyTypeChildren<T>(this DependencyObject dependencyObject) where T : DependencyObject
        {
            List<T> list = new List<T>();
            for (int i = 0; i < VisualTreeHelper.GetChildrenCount(dependencyObject); i++)
            {
                var child = VisualTreeHelper.GetChild(dependencyObject, i);
                if (child is T)
                {
                    list.Add((T)child);
                    continue;
                }
                list.AddRange(child.GetSpecifyTypeChildren<T>());

            }
            return list;
        }
    }
}