/* * Copyright 2000-2016 Vaadin Ltd. * * 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 * * http://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 com.vaadin.ui; import java.util.HashSet; import java.util.Set; import com.vaadin.server.SerializablePredicate; /** * Item enabled provider class for declarative support. *

* Provides a straightforward mapping between an item and its enable state. * * @param * item type */ class DeclarativeItemEnabledProvider implements SerializablePredicate { private Set disabled = new HashSet<>(); @Override public boolean test(T item) { return !disabled.contains(item); } /** * Adds the {@code item} to disabled items list. * * @param item * a data item */ protected void addDisabled(T item) { disabled.add(item); } }