PomInterceptor.java

/*******************************************************************************
 * Copyright (c) 2012-2017 Codenvy, S.A.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.eclipse.che.plugin.maven.client.resource;

import com.google.common.base.Optional;
import com.google.inject.Singleton;

import org.eclipse.che.ide.api.resources.Project;
import org.eclipse.che.ide.api.resources.Resource;
import org.eclipse.che.ide.api.resources.ResourceInterceptor;
import org.eclipse.che.ide.api.resources.marker.PresentableTextMarker;

import static com.google.common.base.Strings.isNullOrEmpty;
import static org.eclipse.che.plugin.maven.shared.MavenAttributes.ARTIFACT_ID;
import static org.eclipse.che.plugin.maven.shared.MavenAttributes.MAVEN_ID;
import static org.eclipse.che.plugin.maven.shared.MavenAttributes.POM_XML;

/**
 * Intercept java based files (.java), cut extension and adds the marker which is responsible for displaying presentable text
 * to the corresponding resource.
 *
 * @author Vlad Zhukovskiy
 * @since 4.4.0
 */
@Singleton
public class PomInterceptor implements ResourceInterceptor {

    /** {@inheritDoc} */
    @Override
    public void intercept(Resource resource) {
        if (resource.isFile() && POM_XML.equals(resource.getName())) {
            final Optional<Project> project = resource.getRelatedProject();

            if (!project.isPresent() || !project.get().isTypeOf(MAVEN_ID)) {
                return;
            }

            final String artifact = project.get().getAttribute(ARTIFACT_ID);

            if (!isNullOrEmpty(artifact)) {
                resource.addMarker(new PresentableTextMarker(artifact));
            }
        }
    }
}