MTP2.0_CSharp/Muchinfo.Common/Fx4.0/Muchinfo.DataPager/Base/MuchinfoNumericElementsPresenter.cs

using Muchinfo.DataPager.Extensions;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;

namespace Muchinfo.DataPager.Base
{
    public class MuchinfoNumericElementsPresenter : Control
    {
        public static readonly DependencyProperty NumericButtonStyleProperty;
        public static readonly DependencyProperty NumericButtonCountProperty;
        public static readonly DependencyProperty PageIndexProperty;
        public static readonly DependencyProperty PageCountProperty;
        private MuchinfoNumericElementsViewModel _viewModel;

        public MuchinfoNumericElementsViewModel ViewModel
        {
            get
            {
                return this._viewModel ?? (this._viewModel = new MuchinfoNumericElementsViewModel(this.NumericButtonCount, this.PageIndex, this.PageCount, this.NumericButtonStyle));
            }
        }

        public Style NumericButtonStyle
        {
            get
            {
                return (Style)base.GetValue(MuchinfoNumericElementsPresenter.NumericButtonStyleProperty);
            }
            set
            {
                base.SetValue(MuchinfoNumericElementsPresenter.NumericButtonStyleProperty, value);
            }
        }

        public int NumericButtonCount
        {
            get
            {
                return (int)base.GetValue(MuchinfoNumericElementsPresenter.NumericButtonCountProperty);
            }
            set
            {
                base.SetValue(MuchinfoNumericElementsPresenter.NumericButtonCountProperty, value);
            }
        }
        public int PageIndex
        {
            get
            {
                return (int)base.GetValue(MuchinfoNumericElementsPresenter.PageIndexProperty);
            }
            set
            {
                base.SetValue(MuchinfoNumericElementsPresenter.PageIndexProperty, value);
            }
        }
        public int PageCount
        {
            get
            {
                return (int)base.GetValue(MuchinfoNumericElementsPresenter.PageCountProperty);
            }
            set
            {
                base.SetValue(MuchinfoNumericElementsPresenter.PageCountProperty, value);
            }
        }

        public MuchinfoNumericElementsPresenter()
        {
            base.DataContext = this.ViewModel;
            base.AddHandler(UIElement.MouseLeftButtonUpEvent, new MouseButtonEventHandler(MuchinfoNumericElementsPresenter.OnButtonPressed), true);
        }
        private static void OnButtonPressed(object sender, MouseButtonEventArgs args)
        {
            var presenter = sender as MuchinfoNumericElementsPresenter;
            var radioButton = ((UIElement)args.OriginalSource).ParentOfType<RadioButton>();
            if (presenter != null && radioButton != null)
            {
                MuchinfoNumericElementsPresenter.SyncRadioButtonStateWithPagerState(presenter, radioButton);
            }
        }
        private static void SyncRadioButtonStateWithPagerState(MuchinfoNumericElementsPresenter pagesPresenter, RadioButton radioButton)
        {
            if (!((MuchinfoNumericElementViewModel)radioButton.DataContext).IsCurrent)
            {
                MuchinfoNumericElementsPresenter.PopulatePages(pagesPresenter);
            }
        }
        static MuchinfoNumericElementsPresenter()
        {
            MuchinfoNumericElementsPresenter.NumericButtonStyleProperty = DependencyProperty.Register("NumericButtonStyle", typeof(Style), typeof(MuchinfoNumericElementsPresenter), new PropertyMetadata(null));
            MuchinfoNumericElementsPresenter.NumericButtonCountProperty = DependencyProperty.Register("NumericButtonCount", typeof(int), typeof(MuchinfoNumericElementsPresenter), new PropertyMetadata(new PropertyChangedCallback(MuchinfoNumericElementsPresenter.PagesRelatedDependencyPropertyChanged)));
            MuchinfoNumericElementsPresenter.PageIndexProperty = DependencyProperty.Register("PageIndex", typeof(int), typeof(MuchinfoNumericElementsPresenter), new PropertyMetadata(new PropertyChangedCallback(MuchinfoNumericElementsPresenter.PagesRelatedDependencyPropertyChanged)));
            MuchinfoNumericElementsPresenter.PageCountProperty = DependencyProperty.Register("PageCount", typeof(int), typeof(MuchinfoNumericElementsPresenter), new PropertyMetadata(new PropertyChangedCallback(MuchinfoNumericElementsPresenter.PagesRelatedDependencyPropertyChanged)));
            FrameworkElement.DefaultStyleKeyProperty.OverrideMetadata(typeof(MuchinfoNumericElementsPresenter), new FrameworkPropertyMetadata(typeof(MuchinfoNumericElementsPresenter)));
        }

        private static void PagesRelatedDependencyPropertyChanged(DependencyObject sender, DependencyPropertyChangedEventArgs args)
        {
            var pagesPresenter = (MuchinfoNumericElementsPresenter)sender;
            MuchinfoNumericElementsPresenter.PopulatePages(pagesPresenter);
        }
        private static void PopulatePages(MuchinfoNumericElementsPresenter pagesPresenter)
        {
            pagesPresenter.ViewModel.PopulatePages(pagesPresenter.NumericButtonCount, pagesPresenter.PageIndex, pagesPresenter.PageCount, pagesPresenter.NumericButtonStyle);
        }
    }
}