using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace PDF_Office.CustomControl
{
    /// <summary>
    /// PaginationControl.xaml 的交互逻辑
    /// </summary>
    public partial class PaginationControl : UserControl
    {
        public PaginationControl()
        {
            InitializeComponent();
        }


        public int CurrentPage
        {
            get { return (int)GetValue(CurrentPageProperty); }
            set { SetValue(CurrentPageProperty, value); }
        }

        // Using a DependencyProperty as the backing store for CurrentPage.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty CurrentPageProperty =
            DependencyProperty.Register("CurrentPage", typeof(int), typeof(PaginationControl), new PropertyMetadata(0));




        public int PageCount
        {
            get { return (int)GetValue(PageCountProperty); }
            set { SetValue(PageCountProperty, value); }
        }

        // Using a DependencyProperty as the backing store for PageCount.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty PageCountProperty =
            DependencyProperty.Register("PageCount", typeof(int), typeof(PaginationControl), new PropertyMetadata(0));



        public string InputString
        {
            get { return (string)GetValue(InputStringProperty); }
            set { SetValue(InputStringProperty, value); }
        }

        // Using a DependencyProperty as the backing store for InputString.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty InputStringProperty =
            DependencyProperty.Register("InputString", typeof(string), typeof(PaginationControl), new PropertyMetadata(""));


        private void CheckInput()
        {
            int page = CurrentPage;
            bool result = int.TryParse(InputString,out page);
            if(result&&(page <= PageCount)&&page>=1)
            {
                CurrentPage = page;
            }
            else
            {
                InputString = CurrentPage.ToString();
            }
        }

        private async void TblIndex_PreviewMouseDown(object sender, MouseButtonEventArgs e)
        {
            if(e.ClickCount==2)
            {
                TblIndex.Visibility = Visibility.Collapsed;
                TxtInput.Visibility = Visibility.Visible;
                await Task.Delay(20);
                TxtInput.SelectAll();
                TxtInput.Focus();
                InputString = CurrentPage.ToString();
            }
        }

        private void TxtInput_LostFocus(object sender, RoutedEventArgs e)
        {
            CheckInput();
            TblIndex.Visibility = Visibility.Visible;
            TxtInput.Visibility = Visibility.Collapsed;

        }

        private void TxtInput_PreviewKeyDown(object sender, KeyEventArgs e)
        {
            if (e.Key == Key.Enter)
            {
                CheckInput();
            }
        }
    }
}