OSGiBundleNature.java

/**
 *  Felinx - Integration link between Felix and Eclipse
    Copyright (C) 2013  Michiel Vermandel

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.jerry.felinx.plugin.builder;

import java.net.URL;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.eclipse.core.resources.ICommand;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IProjectDescription;
import org.eclipse.core.resources.IProjectNature;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
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;
import org.jerry.felinx.plugin.launch.Launcher;

public class OSGiBundleNature implements IProjectNature {

	/**
	 * ID of this project nature
	 */
	public static final String NATURE_ID = "FelinxPlugin.OSGiBundleNature";

	private IProject project;

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.core.resources.IProjectNature#configure()
	 */
	public void configure() throws CoreException {
		IProjectDescription desc = project.getDescription();
		ICommand[] commands = desc.getBuildSpec();

		for (int i = 0; i < commands.length; ++i) {
			if (commands[i].getBuilderName().equals(BundleBuilder.BUILDER_ID)) {
				System.out.println("Already has nature "+BundleBuilder.BUILDER_ID);
				return;
			}
		}

		ICommand[] newCommands = new ICommand[commands.length + 1];
		System.arraycopy(commands, 0, newCommands, 0, commands.length);
		ICommand command = desc.newCommand();
		command.setBuilderName(BundleBuilder.BUILDER_ID);
		newCommands[newCommands.length - 1] = command;
		desc.setBuildSpec(newCommands);
		project.setDescription(desc, null);
		IJavaProject javaProject = JavaCore.create(project);
		List<IClasspathEntry> classpathEntries = new ArrayList<IClasspathEntry>();
		classpathEntries.addAll(Arrays.asList(javaProject.getRawClasspath()));
		
		URL delegateLocation = Launcher.class.getProtectionDomain().getCodeSource().getLocation();
		IPath libPath = new Path(delegateLocation.getPath());
		libPath = libPath.removeLastSegments(1);//remove file name => get folder
		libPath = libPath.append("FelinxPlugin").append("lib");
		IPath frameworkPath = new Path(libPath.append("felix.jar").toString());
		
		IClasspathEntry osgiCore = JavaCore.newLibraryEntry(frameworkPath, null, null);
		classpathEntries.add(osgiCore); 
		javaProject.setRawClasspath(classpathEntries.toArray(new IClasspathEntry[classpathEntries.size()]), new NullProgressMonitor());
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.core.resources.IProjectNature#deconfigure()
	 */
	public void deconfigure() throws CoreException {
		IProjectDescription description = getProject().getDescription();
		ICommand[] commands = description.getBuildSpec();
		for (int i = 0; i < commands.length; ++i) {
			if (commands[i].getBuilderName().equals(BundleBuilder.BUILDER_ID)) {
				ICommand[] newCommands = new ICommand[commands.length - 1];
				System.arraycopy(commands, 0, newCommands, 0, i);
				System.arraycopy(commands, i + 1, newCommands, i, commands.length - i - 1);
				description.setBuildSpec(newCommands);
				project.setDescription(description, null);
				return;
			}
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.core.resources.IProjectNature#getProject()
	 */
	public IProject getProject() {
		return project;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.core.resources.IProjectNature#setProject(org.eclipse.core.resources.IProject)
	 */
	public void setProject(IProject project) {
		this.project = project;
	}

}