Bug 219901 [Undo] new file creation subjec to Undo (file deleted without warning)
when creating a new file by right clicking on your project in the project explorer new->file this action is put on the undo/redo stack. Pressing Ctrl-Z to undo this action will thus delete your file. As this stack is separate from the stack in the editor , one can create a new file, work for a long time, then inadvertently press ctrl-z to undo a code change while having the focus on the project explorer and irrevocably lose their file. Redo will create a new EMPTY file; the work is gone, forever. This appears to only work for the "new file", not for "new->source file" etc. Although some may perceive this as a feature, it is hard to imagine a scenario where ctrl-z should permanently delete a file without warning.
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/dialogs/WizardNewFolderMainPage.java
data.horizontalAlignment = GridData.BEGINNING;
			advancedButton.setLayoutData(data);
			advancedButton.addSelectionListener(new SelectionAdapter() {
				public void widgetSelected(SelectionEvent e) {
					handleAdvancedButtonSelect();
				}
			});
		}
		linkedResourceGroup = new CreateLinkedResourceGroup(IResource.FOLDER,
				new Listener() {
					public void handleEvent(Event e) {
						setPageComplete(validatePage());
						firstLinkCheck = false;
					}
				}, new CreateLinkedResourceGroup.IStringValue() {
					public String getValue() {
						return resourceGroup.getResource();
					}
					public void setValue(String string) {
						resourceGroup.setResource(string);
					}
				});
	}
	/**
	 * (non-Javadoc) Method declared on IDialogPage.
	 */
	public void createControl(Composite parent) {
		initializeDialogUnits(parent);
		
		Composite composite = new Composite(parent, SWT.NONE);