Imported Upstream version 5.4.0.167

Former-commit-id: 5624ac747d633e885131e8349322922b6a59baaa

mcs/class/referencesource/System.Web.DataVisualization/WebForm/Converters/MapAreaCoordinatesConverter.cs

@@ -0,0 +1,103 @@
+//-------------------------------------------------------------
+// <copyright company=<3D>Microsoft Corporation<6F>>
+//   Copyright <20> Microsoft Corporation. All Rights Reserved.
+// </copyright>
+//-------------------------------------------------------------
+// @owner=alexgor, deliant
+//=================================================================
+//  File:		MapAreaCoordinatesConverter.cs
+//
+//  Namespace:	System.Web.UI.DataVisualization.Charting
+//
+//	Classes:	MapAreaCoordinatesConverter
+//
+//  Purpose:	Design-time converter for map area coordinates
+//
+//	Reviewed:	AG - August 7, 2002
+//
+//===================================================================
+
+using System.ComponentModel;
+using System.Globalization;
+
+namespace System.Web.UI.DataVisualization.Charting
+{
+    /// <summary>
+    /// Converter for the array of map area coordinates
+    /// </summary>
+    internal class MapAreaCoordinatesConverter : ArrayConverter
+    {
+        /// <summary>
+        /// Overrides the CanConvertFrom method of TypeConverter.
+        /// The ITypeDescriptorContext interface provides the context for the
+        /// conversion. Typically this interface is used at design time to 
+        /// provide information about the design-time container.
+        /// </summary>
+        /// <param name="context">Descriptor context.</param>
+        /// <param name="sourceType">Convertion source type.</param>
+        /// <returns>Indicates if convertion is possible.</returns>
+        public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
+        {
+            if (sourceType == typeof(string))
+            {
+                return true;
+            }
+            return base.CanConvertFrom(context, sourceType);
+        }
+
+        /// <summary>
+        /// Overrides the ConvertFrom method of TypeConverter.
+        /// Convert from comma separated values in the string.
+        /// </summary>
+        /// <param name="context">Descriptor context.</param>
+        /// <param name="culture">Culture information.</param>
+        /// <param name="value">Value to convert from.</param>
+        /// <returns>Indicates if convertion is possible.</returns>
+        public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
+        {
+            // Can convert from string where each array element is separated by comma
+            string stringValue = value as string;
+            if (stringValue != null)
+            {
+                string[] values = stringValue.Split(new char[] { ',' });
+                float[] array = new float[values.Length];
+                for (int index = 0; index < values.Length; index++)
+                {
+                    array[index] = float.Parse(values[index], System.Globalization.CultureInfo.CurrentCulture);
+                }
+
+                return array;
+            }
+
+            // Call base class
+            return base.ConvertFrom(context, culture, value);
+        }
+
+        /// <summary>
+        /// Overrides the ConvertTo method of TypeConverter.
+        /// Convert coordinates array to comma separated values in string.
+        /// </summary>
+        /// <param name="context">Descriptor context.</param>
+        /// <param name="culture">Culture information.</param>
+        /// <param name="value">Value to convert.</param>
+        /// <param name="destinationType">Convertion destination type.</param>
+        /// <returns>Converted object.</returns>
+        public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
+        {
+            if (destinationType == typeof(string))
+            {
+                float[] array = (float[])value;
+                string result = "";
+
+                foreach (float d in array)
+                {
+                    result += d.ToString(System.Globalization.CultureInfo.CurrentCulture) + ",";
+                }
+
+                return result.TrimEnd(',');
+            }
+
+            return base.ConvertTo(context, culture, value, destinationType);
+        }
+    }
+}