Fixed SD2-1335. Xml editor now catches any WebExceptions which can occur for any externally referenced DTDs when the user is offline.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/branches/3.0@3521 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/DisplayBindings/XmlEditor/Project/Src/IXmlTreeView.cs

@@ -19,6 +19,11 @@ namespace ICSharpCode.XmlEditor
 		/// <param name="ex">The exception that occurred when the xml
 		/// was loaded.</param>
 		void ShowXmlIsNotWellFormedMessage(XmlException ex);
+	
+		/// <summary>
+		/// Displays an error message.
+		/// </summary>
+		void ShowErrorMessage(string message);
 		
 		/// <summary>
 		/// Gets or sets whether this view needs saving.

src/AddIns/DisplayBindings/XmlEditor/Project/Src/XmlTreeEditor.cs

@@ -7,8 +7,10 @@
 
 using System;
 using System.Collections.Generic;
+using System.Net;
 using System.Xml;
 
+using ICSharpCode.Core;
 using ICSharpCode.TextEditor.Gui.CompletionWindow;
 
 namespace ICSharpCode.XmlEditor
@@ -42,6 +44,9 @@ namespace ICSharpCode.XmlEditor
 				view.Document = document;
 			} catch (XmlException ex) {
 				view.ShowXmlIsNotWellFormedMessage(ex);
+			} catch (WebException ex) {
+				LoggingService.Debug(ex.ToString());
+				view.ShowErrorMessage(ex.Message);
 			}
 		}
 		

src/AddIns/DisplayBindings/XmlEditor/Project/Src/XmlTreeViewContainerControl.cs

@@ -141,9 +141,14 @@ namespace ICSharpCode.XmlEditor
 		}
 		
 		public void ShowXmlIsNotWellFormedMessage(XmlException ex)
+		{
+			ShowErrorMessage(ex.Message);
+		}
+		
+		public void ShowErrorMessage(string message)
 		{
 			xmlElementTreeView.Clear();
-			ErrorMessage = ex.Message;
+			ErrorMessage = message;
 			IsErrorMessageTextBoxVisible = true;
 		}
 	

src/AddIns/DisplayBindings/XmlEditor/Project/Src/XmlView.cs

@@ -10,6 +10,7 @@ using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.Drawing.Printing;
 using System.IO;
+using System.Net;
 using System.Text;
 using System.Windows.Forms;
 using System.Xml;
@@ -1006,6 +1007,8 @@ namespace ICSharpCode.XmlEditor
 					return true;
 				} catch(XmlException ex) {
 					AddTask(xmlEditor.FileName, ex.Message, ex.LinePosition - 1, ex.LineNumber - 1, TaskType.Error);
+				} catch (WebException ex) {
+					AddTask(xmlEditor.FileName, ex.Message, 0, 0, TaskType.Error);
 				}
 				return false;
 			}

src/AddIns/DisplayBindings/XmlEditor/Test/Utils/MockXmlTreeView.cs

@@ -59,6 +59,10 @@ namespace XmlEditor.Tests.Utils
 			notWellFormedException = ex;
 		}
 		
+		public void ShowErrorMessage(string message)
+		{
+		}
+		
 		public bool IsDirty {
 			get {
 				return dirty;