/Main/src/DynamicDataDisplay/Common/HorizontalAxisTitle.cs

  1using System;
  2using System.Windows;
  3using System.Windows.Controls;
  4using System.Windows.Markup;
  5using Microsoft.Research.DynamicDataDisplay.Charts;
  6using Microsoft.Research.DynamicDataDisplay.Common.Auxiliary;
  7
  8namespace Microsoft.Research.DynamicDataDisplay
  9{
 10	/// <summary>
 11	/// Represents a title of horizontal axis. Can be placed from top or bottom of Plotter.
 12	/// </summary>
 13	public class HorizontalAxisTitle : ContentControl, IPlotterElement
 14	{
 15		/// <summary>
 16		/// Initializes a new instance of the <see cref="HorizontalAxisTitle"/> class.
 17		/// </summary>
 18		public HorizontalAxisTitle()
 19		{
 20			FontSize = 16;
 21			HorizontalAlignment = HorizontalAlignment.Center;
 22		}
 23
 24		/// <summary>
 25		/// Initializes a new instance of the <see cref="HorizontalAxisTitle"/> class.
 26		/// </summary>
 27		/// <param name="content">The content.</param>
 28		public HorizontalAxisTitle(object content)
 29			: this()
 30		{
 31			Content = content;
 32		}
 33
 34		private Plotter plotter;
 35		public Plotter Plotter
 36		{
 37			get { return plotter; }
 38		}
 39
 40		public void OnPlotterAttached(Plotter plotter)
 41		{
 42			this.plotter = plotter;
 43			AddToPlotter();
 44		}
 45
 46		public void OnPlotterDetaching(Plotter plotter)
 47		{
 48			RemoveFromPlotter();
 49			this.plotter = null;
 50		}
 51
 52		private Panel GetHostPanel(Plotter plotter)
 53		{
 54			if (placement == AxisPlacement.Bottom)
 55				return plotter.BottomPanel;
 56			else
 57				return plotter.TopPanel;
 58		}
 59
 60		private int GetInsertPosition(Panel panel)
 61		{
 62			if (placement == AxisPlacement.Bottom)
 63				return panel.Children.Count;
 64			else
 65				return 0;
 66		}
 67
 68		private AxisPlacement placement = AxisPlacement.Bottom;
 69		/// <summary>
 70		/// Gets or sets the placement of axis title.
 71		/// </summary>
 72		/// <value>The placement.</value>
 73		public AxisPlacement Placement
 74		{
 75			get { return placement; }
 76			set
 77			{
 78				if (!value.IsBottomOrTop())
 79					throw new ArgumentException(String.Format("HorizontalAxisTitle only supports Top and Bottom values of AxisPlacement, you passed '{0}'", value), "Placement");
 80
 81				if (placement != value)
 82				{
 83					if (plotter != null)
 84					{
 85						RemoveFromPlotter();
 86					}
 87
 88					placement = value;
 89
 90					if (plotter != null)
 91					{
 92						AddToPlotter();
 93					}
 94				}
 95			}
 96		}
 97
 98		private void RemoveFromPlotter()
 99		{
100			var oldPanel = GetHostPanel(plotter);
101			oldPanel.Children.Remove(this);
102		}
103
104		private void AddToPlotter()
105		{
106			var hostPanel = GetHostPanel(plotter);
107			var index = GetInsertPosition(hostPanel);
108			hostPanel.Children.Insert(index, this);
109		}
110	}
111}