Bug 38570 Source generation wizards; Add button to open preference page
M1 The Getter/Setter wizard should offer an access to the Code Generation Preference page: Field prefix/suffix, getter/setter body content, method comment template Add delegate, constructor and override could have a button for the method comment template The code to open a preference page programatically can be copied from TodoTaskPropertyPage.showPreferencePage
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/actions/AddGetterSetterAction.java
IEditorPart editor= EditorUtility.openInEditor(cu);
		run(cu, getterFields, setterFields, getterSetterFields, editor, elementPosition);			
	}
	
	
    
    /* (non-Javadoc)
     * Method declared on SelectionDispatchAction
     */		
	public void selectionChanged(ITextSelection selection) {
    }
	
	/* (non-Javadoc)
	 * Method declared on SelectionDispatchAction
	 */		
	public void run(ITextSelection selection) {
		try {
			if (!ActionUtil.isProcessable(getShell(), fEditor))
				return;		
			
			IJavaElement[] elements= SelectionConverter.codeResolve(fEditor);
			if (elements.length == 1 && (elements[0] instanceof IField)) {
				IField field= (IField)elements[0];
				run(field.getDeclaringType(), new IField[] {field}, true);
				return;
			}
			IJavaElement element= SelectionConverter.getElementAtOffset(fEditor);
			
			if (element != null){