org.apache.buildr.eclipse.BuildrNature.java Source code

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Here is the source code for org.apache.buildr.eclipse.BuildrNature.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with this
 * work for additional information regarding copyright ownership.  The ASF
 * licenses this file to you 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 org.apache.buildr.eclipse;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IProjectNature;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.Path;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;

public class BuildrNature implements IProjectNature {

    /**
     * ID of this project nature
     */
    public static final String NATURE_ID = "org.apache.buildr.eclipse.buildrNature";

    private IProject project;

    @Override
    public void configure() throws CoreException {
        if (project.hasNature(JavaCore.NATURE_ID)) {
            IJavaProject targetProject = JavaCore.create(project);
            IClasspathEntry[] entries = targetProject.getRawClasspath();
            Path buildrContainer = new Path("org.apache.buildr.eclipse.BUILDR_CONTAINER/dependencies");
            for (IClasspathEntry entry : entries) {
                if (entry.getPath().equals(buildrContainer)) {
                    return;
                }
            }

            IClasspathEntry entry = JavaCore.newContainerEntry(buildrContainer);
            IClasspathEntry[] newEntries = new IClasspathEntry[entries.length + 1];
            System.arraycopy(entries, 0, newEntries, 0, entries.length);
            newEntries[entries.length] = entry;
            targetProject.setRawClasspath(newEntries, true, new NullProgressMonitor());
        }
    }

    @Override
    public void deconfigure() throws CoreException {
        if (project.hasNature(JavaCore.NATURE_ID)) {
            IJavaProject targetProject = JavaCore.create(project);
            IClasspathEntry[] entries = targetProject.getRawClasspath();
            Path buildrContainer = new Path("org.apache.buildr.eclipse.BUILDR_CONTAINER/dependencies");
            List<IClasspathEntry> newEntries = new ArrayList<>();
            for (IClasspathEntry entry : entries) {
                if (!entry.getPath().equals(buildrContainer)) {
                    newEntries.add(entry);
                }
            }

            targetProject.setRawClasspath(newEntries.toArray(new IClasspathEntry[newEntries.size()]), true,
                    new NullProgressMonitor());
        }
    }

    @Override
    public IProject getProject() {
        return project;
    }

    @Override
    public void setProject(IProject project) {
        this.project = project;
    }

}