001/*
002 * (C) Copyright 2019 Nuxeo (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     bdelbosc
018 */
019package org.nuxeo.ecm.core.scroll;
020
021import java.util.List;
022import java.util.stream.Collectors;
023
024import org.nuxeo.ecm.core.api.scroll.ScrollService;
025import org.nuxeo.runtime.model.ComponentContext;
026import org.nuxeo.runtime.model.DefaultComponent;
027
028/**
029 * @since 11.1
030 */
031public class ScrollComponent extends DefaultComponent {
032
033    public static final String XP_SCROLL = "scroll";
034
035    protected ScrollService scrollService;
036
037    @Override
038    @SuppressWarnings("unchecked")
039    public <T> T getAdapter(Class<T> adapter) {
040        if (adapter.isAssignableFrom(ScrollService.class)) {
041            return (T) scrollService;
042        }
043        return null;
044    }
045
046    @Override
047    public void start(ComponentContext context) {
048        super.start(context);
049        scrollService = new ScrollServiceImpl(getEnabledDescriptors());
050    }
051
052    protected List<ScrollDescriptor> getEnabledDescriptors() {
053        List<ScrollDescriptor> descriptors = getDescriptors(XP_SCROLL);
054        return descriptors.stream().filter(ScrollDescriptor::isEnabled).collect(Collectors.toList());
055    }
056
057}