using System;
using System.Collections;
using System.Windows;
using System.Windows.Controls;

namespace loraderon.Controls
{
	public partial class SelectButton : UserControl
	{
		public event RoutedEventHandler Click;
		public event SelectionChangedEventHandler SelectionChanged;

		public static readonly DependencyProperty ItemsSourceProperty =
			DependencyProperty.Register("ItemsSource", typeof(IEnumerable), typeof(SelectButton));
		public static readonly DependencyProperty ItemTemplateProperty =
				DependencyProperty.Register("ItemTemplate", typeof(DataTemplate), typeof(SelectButton), new UIPropertyMetadata(null));
		public static readonly DependencyProperty IsExpandedProperty =
				DependencyProperty.Register("IsExpanded", typeof(bool), typeof(SelectButton));
		public static readonly DependencyProperty SelectedIndexProperty =
				DependencyProperty.Register("SelectedIndex", typeof(int), typeof(SelectButton));

		public SelectButton()
		{
			InitializeComponent();
		}

		public IEnumerable ItemsSource
		{
			get { return (IEnumerable)GetValue(ItemsSourceProperty); }
			set { SetValue(ItemsSourceProperty, value); }
		}

		public DataTemplate ItemTemplate
		{
			get { return (DataTemplate)GetValue(ItemTemplateProperty); }
			set { SetValue(ItemTemplateProperty, value); }
		}

		public int SelectedIndex
		{
			get { return (int)GetValue(SelectedIndexProperty); }
			set { SetValue(SelectedIndexProperty, value); }
		}

		public bool IsExpanded
		{
			get { return (bool)GetValue(IsExpandedProperty); }
			set
			{
				SetValue(IsExpandedProperty, value);
				if (!value)
					collapsedAt = DateTime.Now;
				if (value)
					ListBox.Focus();
			}
		}
		private DateTime collapsedAt = DateTime.MinValue;

		private void Expander_Expanded(object sender, RoutedEventArgs e)
		{
			if (DateTime.Now - collapsedAt <= TimeSpan.FromMilliseconds(200))
			{
				Expander.IsExpanded = false;
				IsExpanded = false;
				return;
			}
			IsExpanded = true;
		}

		private void Expander_Collapsed(object sender, RoutedEventArgs e)
		{
			IsExpanded = false;
		}

		private void Button_Click(object sender, RoutedEventArgs e)
		{
			if (Click != null)
				Click(this, e);
		}

		private void ListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
		{
			ButtonContent.Content = ListBox.SelectedItem;

			if (SelectionChanged != null)
				SelectionChanged(this, e);
			IsExpanded = false;
		}

		private void UserControl_SizeChanged(object sender, SizeChangedEventArgs e)
		{
			ButtonContent.Width = SplitGrid.ColumnDefinitions[0].ActualWidth;
		}
	}
}