Imported Upstream version 5.4.0.167

Former-commit-id: 5624ac747d633e885131e8349322922b6a59baaa

mcs/class/referencesource/System.Web.DataVisualization/Common/General/ChartAreaCollection.cs

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+//-------------------------------------------------------------
+// <copyright company=<3D>Microsoft Corporation<6F>>
+//   Copyright <20> Microsoft Corporation. All Rights Reserved.
+// </copyright>
+//-------------------------------------------------------------
+// @owner=alexgor, deliant
+//=================================================================
+//  File:		ChartAreaCollection.cs
+//
+//  Namespace:	System.Web.UI.WebControls[Windows.Forms].Charting
+//
+//	Classes:	ChartAreaCollection
+//
+//  Purpose:	ChartAreaCollection class represents a strongly 
+//              typed collection of ChartArea objects.
+//
+//	Reviewed:	GS - Aug 8, 2002
+//				AG - Aug 8, 2002
+//              AG - Microsoft 16, 2007
+//
+//===================================================================
+
+
+#region Used namespaces
+
+using System;
+using System.Collections;
+using System.Drawing;
+using System.ComponentModel;
+
+
+#endregion
+
+#if Microsoft_CONTROL
+	namespace System.Windows.Forms.DataVisualization.Charting
+#else
+namespace System.Web.UI.DataVisualization.Charting
+
+#endif
+{
+	/// <summary>
+    /// The ChartAreaCollection class represents a strongly typed collection of 
+    /// ChartArea objects. Each chart area has a unique name in the collection
+    /// and can be retrieved by name or by index.
+	/// </summary>
+#if ASPPERM_35
+	[AspNetHostingPermission(System.Security.Permissions.SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
+    [AspNetHostingPermission(System.Security.Permissions.SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
+#endif
+    public class ChartAreaCollection : ChartNamedElementCollection<ChartArea>
+	{
+
+		#region Constructors
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ChartAreaCollection"/> class.
+        /// </summary>
+        /// <param name="chartPicture">Parent chart picture.</param>
+		internal ChartAreaCollection(ChartPicture chartPicture) : base(chartPicture)
+		{
+		}
+
+        #endregion
+
+        #region Properties
+        /// <summary>
+        /// Gets the default chart area name.
+        /// </summary>
+        internal string DefaultNameReference 
+        {
+            get { return this.Count > 0 ? this[0].Name : String.Empty; }
+        }
+        #endregion
+
+        #region Methods
+
+        /// <summary>
+        /// Creates a new ChartArea with the specified name and adds it to the collection.
+        /// </summary>
+        /// <param name="name">The new chart area name.</param>
+        /// <returns></returns>
+        public ChartArea Add(string name) 
+        {
+            ChartArea area = new ChartArea(name);
+            this.Add(area);
+            return area;
+        }
+
+        #endregion
+
+        #region Event handlers
+        /// <summary>
+        /// Updates the ChartArea alignment references to another chart areas.
+        /// </summary>
+        /// <param name="sender">The sender.</param>
+        /// <param name="e">The <see cref="Charting.NameReferenceChangedEventArgs"/> instance containing the event data.</param>
+        internal void ChartAreaNameReferenceChanged(object sender, NameReferenceChangedEventArgs e)
+        {
+            foreach (ChartArea chartArea in this)
+                if (chartArea.AlignWithChartArea == e.OldName)
+                    chartArea.AlignWithChartArea = e.NewName;
+        }
+
+        #endregion
+
+    }
+}