Bug 17292 Inconsistent Undo behaviour for Cut/Copy/Paste in outline
Build 20020521 (freeze 1) 1) Open a java editor on some class 2) In the content outline, select a method and do Ctrl+X to cut 3) Notice in the menus, Edit->Undo and Refactor->Undo are disabled 4) Now select the type node in the content outline, and Ctrl+V to paste 5) Still, neither Undo action is enabled 6) Now click inside the editor area to give it focus. 7) Now "Edit->Undo" is possible. So, the problems are: 1) Undo is not consistent, it's available for Paste but not Cut. 2) Even when undo is possible, it only becomes enabled when the editor is activated.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaOutlinePage.java
createTreeItem(w, (Object) e, j);
										}
										continue go2;
									}
									
								} catch (JavaModelException x) {
									
								}
								
								last= item;
							}
						
							
							if (last != null && deletions.contains(last)) {
								
								deletions.removeElement(last);
								reuseTreeItem(last, e);
							} else {
								
								createTreeItem(w, e, -1);
							}
						
						} catch (JavaModelException x) {
							
						}
					}