Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web.Mobile/UI/MobileControls/Design/StyleSheetComponentEditor.cs

@@ -0,0 +1,70 @@
+//------------------------------------------------------------------------------
+// <copyright file="StyleSheetComponentEditor.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>                                                                
+//------------------------------------------------------------------------------
+
+namespace System.Web.UI.Design.MobileControls
+{
+    using System;
+    using System.ComponentModel;
+    using System.Diagnostics;
+    using System.Web.UI.MobileControls;
+    using System.Web.UI.Design.MobileControls;
+    using System.Web.UI.Design.MobileControls.Adapters;
+    using System.Windows.Forms;
+
+    /// <summary>
+    ///    <para>
+    ///       Provides a component editor for a StyleSheet <see cref='System.Web.UI.MobileControls.StyleSheet'/>
+    ///       control.
+    ///    </para>
+    /// </summary>
+    /// <seealso cref='System.Web.UI.MobileControls.StyleSheet'/>
+    [
+        System.Security.Permissions.SecurityPermission(System.Security.Permissions.SecurityAction.Demand,
+        Flags=System.Security.Permissions.SecurityPermissionFlag.UnmanagedCode)
+    ]
+    [Obsolete("The System.Web.Mobile.dll assembly has been deprecated and should no longer be used. For information about how to develop ASP.NET mobile applications, see http://go.microsoft.com/fwlink/?LinkId=157231.")]
+    internal class StyleSheetComponentEditor : ComponentEditor 
+    {
+        public override bool EditComponent(ITypeDescriptorContext context, Object component)  
+        {
+            Debug.Assert(component is StyleSheet);
+
+            StyleSheet styleSheet = (StyleSheet)component;
+            StyleSheetDesigner designer = 
+                (StyleSheetDesigner)DesignerAdapterUtil.ControlDesigner(styleSheet);
+            //String currentStyle = designer.TemplateStyle;
+
+            if (designer.InTemplateMode)
+            {
+                MessageBox.Show(SR.GetString(SR.BaseTemplatedMobileComponentEditor_TemplateModeErrorMessage), 
+                    SR.GetString(SR.BaseTemplatedMobileComponentEditor_TemplateModeErrorTitle),
+                    MessageBoxButtons.OK, MessageBoxIcon.Information);
+
+                return false;
+            }
+
+            StylesEditorDialog dialog;
+            
+            try
+            {
+                dialog = new StylesEditorDialog(
+                    styleSheet,
+                    designer,
+                    null /*currentStyle*/
+                );
+            }
+            catch//(ArgumentException e)
+            {
+                // Debug.Fail(e.ToString());
+                // Block user from entering StylesEditorDialog until they fix
+                // duplicate style declarations.
+                return false;
+            }
+
+            return (dialog.ShowDialog() == DialogResult.OK);
+        }
+    }
+}