AvalonEdit: scroll when mouse is moved close to border while selecting text.

NewFileDialog: fixed bug that caused file names to not contain ${Number}.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@4850 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Editing/Caret.cs

@@ -307,11 +307,16 @@ namespace ICSharpCode.AvalonEdit.Editing
 		/// Scrolls the text view so that the caret is visible.
 		/// </summary>
 		public void BringCaretToView()
+		{
+			BringCaretToView(MinimumDistanceToViewBorder);
+		}
+		
+		internal void BringCaretToView(double border)
 		{
 			if (textView != null) {
 				VisualLine visualLine = textView.GetOrConstructVisualLine(textView.Document.GetLineByNumber(position.Line));
 				Rect caretRectangle = CalcCaretRectangle(visualLine);
-				caretRectangle.Inflate(MinimumDistanceToViewBorder, MinimumDistanceToViewBorder);
+				caretRectangle.Inflate(border, border);
 				textView.MakeVisible(caretRectangle);
 			}
 		}

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Editing/SelectionMouseHandler.cs

@@ -530,6 +530,7 @@ namespace ICSharpCode.AvalonEdit.Editing
 					SetCaretOffsetToMousePosition(e, textArea.Selection.SurroundingSegment);
 				}
 			}
+			textArea.Caret.BringCaretToView(5.0);
 		}
 		#endregion
 		

src/Main/Base/Project/Src/Gui/Dialogs/NewFileDialog.cs

@@ -314,9 +314,9 @@ namespace ICSharpCode.SharpDevelop.Gui
 								}
 							}
 							if (found == false)
-								break;
+								return fileName;
 						} else if (!File.Exists(Path.Combine(basePath, fileName))) {
-							break;
+							return fileName;
 						}
 						++curNumber;
 					}