//----------------------------------------------------------------
//Module Name:  MuchinfoWindowControl
//Purpose:      
//CopyRight:    Muchinfo
//History:
//----------------------------------------------------------------
//DateTime		Author		    Description
//----------------------------------------------------------------
//2014-04-08    deng.yinping       Create
//----------------------------------------------------------------

using System.Windows;
using System.Windows.Input;
using System.Windows.Media;
using Xceed.Wpf.Toolkit.Primitives;

namespace Muchinfo.WPF.Controls.Windows
{
    public class MuchinfoWindowControl : WindowControl
    {
        public MuchinfoWindowControl()
        {
            this.CloseButtonClicked += MuchinfoWindowControl_CloseButtonClicked;
            this.HeaderMouseLeftButtonClicked += MuchinfoWindowControl_HeaderMouseLeftButtonClicked;
        }

        private void MuchinfoWindowControl_HeaderMouseLeftButtonClicked(object sender, MouseButtonEventArgs e)
        {
            var parent = FindVisualParent<Window>(this);
            if (parent != null) parent.DragMove();
        }

        private void MuchinfoWindowControl_CloseButtonClicked(object sender, RoutedEventArgs e)
        {
            var parent = FindVisualParent<Window>(this);
            if (parent != null) parent.Close();
        }

        /// <summary>
        /// 从父容器中查找指定类型的控件
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="parent"></param>
        /// <returns></returns>
        private T FindVisualChild<T>(DependencyObject parent) where T : DependencyObject
        {
            if (parent == null) return null;
            for (int i = 0; i < VisualTreeHelper.GetChildrenCount(parent); i++)
            {
                var childObject = VisualTreeHelper.GetChild(parent, i);
                if (childObject == null) return null;
                var child = childObject as T;
                if (child == null)
                {
                    var childItem = FindVisualChild<T>(childObject);
                    if (childItem != null) return childItem;
                }
                return child;
            }
            return null;
        }

        /// <summary>
        /// 查找指定类型的父容器
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="child">The child.</param>
        /// <returns>``0.</returns>
        private T FindVisualParent<T>(DependencyObject child) where T : DependencyObject
        {
            if (child == null) return null;
            var parentObject = VisualTreeHelper.GetParent(child);
            if (parentObject == null) return null;
            var parent = parentObject as T;
            return parent ?? FindVisualParent<T>(parentObject);
        }
    }
}