private HtmlUnorderedList getPalette(COMPONENT_CATEGORY category) {
List<HtmlFormBuilderItem> components = new ArrayList<>();
if (category == COMPONENT_CATEGORY.OUTPUT) {
components.add(FormBuilderItemFactory.getUIComponent(new FormBuilderItemHeading(true)));
components.add(FormBuilderItemFactory.getUIComponent(new FormBuilderItemLabel(true)));
components.add(FormBuilderItemFactory.getUIComponent(new FormBuilderItemImage(true)));
components.add(FormBuilderItemFactory.getUIComponent(new FormBuilderItemDownload(true)));
} else if (category == COMPONENT_CATEGORY.INPUT) {
components.add(FormBuilderItemFactory.getUIComponent(new FormBuilderItemInput(true)));