using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Windows;

using System.Windows.Markup;

using Microsoft.Research.DynamicDataDisplay.Common;

using System.Windows.Controls;



namespace Microsoft.Research.DynamicDataDisplay.Charts

{

	[ContentProperty("Content")]

	public class ViewportUIContainer : DependencyObject, IPlotterElement

	{

		public ViewportUIContainer() { }



		public ViewportUIContainer(FrameworkElement content)

		{

			this.Content = content;

		}



		private FrameworkElement content;

		[NotNull]

		public FrameworkElement Content

		{

			get { return content; }

			set { content = value; }

		}



		#region IPlotterElement Members



		void IPlotterElement.OnPlotterAttached(Plotter plotter)

		{

			this.plotter = plotter;



			if (Content == null) return;



			var plotterPanel = GetPlotterPanel(Content);

			//Plotter.SetPlotter(Content, plotter);



			if (plotterPanel == PlotterPanel.MainCanvas)

			{

				// if all four Canvas.{Left|Right|Top|Bottom} properties are not set,

				// and as we are adding by default content to MainCanvas, 

				// and since I like more when buttons are by default in right down corner - 

				// set bottom and right to 10.

				var left = Canvas.GetLeft(content);

				var top = Canvas.GetTop(content);

				var bottom = Canvas.GetBottom(content);

				var right = Canvas.GetRight(content);



				if (left.IsNaN() && right.IsNaN() && bottom.IsNaN() && top.IsNaN())

				{

					Canvas.SetBottom(content, 10.0);

					Canvas.SetRight(content, 10.0);

				}

				plotter.MainCanvas.Children.Add(Content);

			}

		}



		void IPlotterElement.OnPlotterDetaching(Plotter plotter)

		{

			if (Content != null)

			{

				var plotterPanel = GetPlotterPanel(Content);

				//Plotter.SetPlotter(Content, null);

				if (plotterPanel == PlotterPanel.MainCanvas)

				{

					plotter.MainCanvas.Children.Remove(Content);

				}

			}



			this.plotter = null;

		}



		private Plotter plotter;

		Plotter IPlotterElement.Plotter

		{

			get { return plotter; }

		}



		#endregion



		[AttachedPropertyBrowsableForChildren]

		public static PlotterPanel GetPlotterPanel(DependencyObject obj)

		{

			return (PlotterPanel)obj.GetValue(PlotterPanelProperty);

		}



		public static void SetPlotterPanel(DependencyObject obj, PlotterPanel value)

		{

			obj.SetValue(PlotterPanelProperty, value);

		}



		public static readonly DependencyProperty PlotterPanelProperty = DependencyProperty.RegisterAttached(

		  "PlotterPanel",

		  typeof(PlotterPanel),

		  typeof(ViewportUIContainer),

		  new FrameworkPropertyMetadata(PlotterPanel.MainCanvas));

	}

}