org.jboss.elemento.ElementsBag Maven / Gradle / Ivy
/*
* Copyright 2023 Red Hat
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jboss.elemento;
import java.util.Iterator;
import elemental2.core.JsArray;
import elemental2.dom.Element;
import elemental2.dom.HTMLElement;
/**
* Class to collect {@link Element}s
*
* {@snippet class = ElementsBagDemo region = bag}
*/
public class ElementsBag implements TypedBuilder, ElementsBag> {
private final IterableImpl iterable;
public ElementsBag() {
iterable = new IterableImpl();
}
@Override
public ElementsBag that() {
return this;
}
/** @return the elements in this bag. */
public Iterable elements() {
return iterable;
}
// ------------------------------------------------------ mirror add() methods from Container
/** Adds the given element. */
public ElementsBag add(Element element) {
iterable.elements.push(element);
return that();
}
/** Adds the given element by calling {@code element.element()}. */
public ElementsBag add(IsElement element) {
if (element != null) {
return add(element.element());
}
return that();
}
/** Adds all elements. */
public ElementsBag addAll(Element... elements) {
for (Element element : elements) {
add(element);
}
return that();
}
/** Adds all elements. */
public ElementsBag addAll(HTMLElement... elements) {
for (HTMLElement element : elements) {
add(element);
}
return that();
}
/** Adds all elements. */
public ElementsBag addAll(IsElement... elements) {
for (IsElement element : elements) {
if (element != null) {
add(element.element());
}
}
return that();
}
/** Adds all elements. */
public ElementsBag addAll(Iterable elements) {
for (Object element : elements) {
if (element instanceof HTMLElement) {
add(((HTMLElement) element));
} else if (element instanceof IsElement) {
// noinspection rawtypes
add(((IsElement) element).element());
}
}
return that();
}
// ------------------------------------------------------ inner classes
private static class IterableImpl implements Iterable {
final JsArray elements;
private IterableImpl() {
elements = new JsArray<>();
}
@Override
public Iterator iterator() {
return Elements.iterator(elements);
}
}
}