using NaiBa.Util.Extension;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Data;

namespace _29WxOrderWpf.Converters
{
    public class HasTextToVisibilityConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value == null)
                return Visibility.Collapsed;
            return !value.ParseToString().Trim().IsNullOrEmpty() ? Visibility.Visible : Visibility.Collapsed;
        }
        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException(); // 单向绑定可不实现
        }
    }

    public class NotHasTextToVisibilityConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return value.ParseToString().IsNullOrEmpty() ? Visibility.Visible : Visibility.Collapsed;
        }
        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException(); // 单向绑定可不实现
        }
    }

    /// <summary>
    /// 超出19个字的文本显示省略号
    /// </summary>
    public class TextEllipsisConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value.ParseToString().Length > 19)
                return string.Join("", value.ParseToString().Take(19)) + "…";
            return value.ParseToString();
        }
        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException(); // 单向绑定可不实现
        }
    }

	/// <summary>
	/// 超出26个字的文本显示省略号
	/// </summary>
	public class TextEllipsisConverter26 : IValueConverter
	{
		public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
		{
			if (value.ParseToString().Length > 26)
				return string.Join("", value.ParseToString().Take(26)) + "…";
			return value.ParseToString();
		}
		public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
		{
			throw new NotImplementedException(); // 单向绑定可不实现
		}
	}
	/// <summary>
	/// 超出10个字的文本显示省略号
	/// </summary>
	public class TextEllipsisConverter8 : IValueConverter
	{
		public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
		{
			if (value.ParseToString().Length > 8)
				return string.Join("", value.ParseToString().Take(8)) + "…";
			return value.ParseToString();
		}
		public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
		{
			throw new NotImplementedException(); // 单向绑定可不实现
		}
	}
}