org.eclipse.jst.server.jetty.core/src/org/eclipse/jst/server/jetty/core/internal/JettySourcePathComputerDelegate.java

/*******************************************************************************
 * Copyright (c) 2004, 2010 IBM Corporation and others.
 * 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:
 *    IBM Corporation - Initial API and implementation
 *    Angelo Zerr <angelo.zerr@gmail.com> - Jetty packages
 *******************************************************************************/
package org.eclipse.jst.server.jetty.core.internal;

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

import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.debug.core.ILaunchConfiguration;
import org.eclipse.debug.core.sourcelookup.ISourceContainer;
import org.eclipse.debug.core.sourcelookup.ISourcePathComputerDelegate;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.launching.IRuntimeClasspathEntry;
import org.eclipse.jdt.launching.JavaRuntime;
import org.eclipse.jst.server.jetty.core.internal.wst.IModuleVisitor;
import org.eclipse.jst.server.jetty.core.internal.wst.ModuleTraverser;
import org.eclipse.wst.common.componentcore.resources.IVirtualComponent;
import org.eclipse.wst.server.core.IModule;
import org.eclipse.wst.server.core.IServer;
import org.eclipse.wst.server.core.ServerUtil;

/**
 * 
 */
public class JettySourcePathComputerDelegate implements ISourcePathComputerDelegate
{

    /**
     * {@inheritDoc}
     */
    public ISourceContainer[] computeSourceContainers(ILaunchConfiguration configuration, IProgressMonitor monitor) throws CoreException
    {
        IServer server = ServerUtil.getServer(configuration);

        SourcePathComputerVisitor visitor = new SourcePathComputerVisitor(configuration);

        IModule[] modules = server.getModules();
        for (int i = 0; i < modules.length; i++)
        {
            ModuleTraverser.traverse(modules[i],visitor,monitor);
        }

        return visitor.getSourceContainers();
    }

    class SourcePathComputerVisitor implements IModuleVisitor
    {

        final ILaunchConfiguration configuration;

        /**
         * List<IRuntimeClasspathEntry> of unresolved IRuntimeClasspathEntries
         */
        List<IRuntimeClasspathEntry> runtimeClasspath = new ArrayList<IRuntimeClasspathEntry>();

        SourcePathComputerVisitor(ILaunchConfiguration configuration)
        {
            this.configuration = configuration;
        }

        /**
         * {@inheritDoc}
         */
        public void visitWebComponent(IVirtualComponent component) throws CoreException
        {
            IProject project = component.getProject();
            if (project.hasNature(JavaCore.NATURE_ID))
            {
                IJavaProject javaProject = JavaCore.create(project);
                runtimeClasspath.add(JavaRuntime.newDefaultProjectClasspathEntry(javaProject));
            }
        }

        /**
         * {@inheritDoc}
         */
        public void endVisitWebComponent(IVirtualComponent component) throws CoreException
        {
            // do nothing
        }

        /**
         * {@inheritDoc}
         */
        public void visitArchiveComponent(IPath runtimePath, IPath workspacePath)
        {
            // do nothing
        }

        /**
         * {@inheritDoc}
         */
        public void visitDependentComponent(IPath runtimePath, IPath workspacePath)
        {
            // do nothing
        }

        /**
         * {@inheritDoc}
         */
        public void visitWebResource(IPath runtimePath, IPath workspacePath)
        {
            // do nothing
        }

        /**
         * {@inheritDoc}
         */
        public void visitDependentContentResource(IPath runtimePath, IPath workspacePath)
        {
            // do nothing
        }

        /**
         * {@inheritDoc}
         */
        public void visitEarResource(IPath runtimePath, IPath workspacePath)
        {
            // do nothing
        }

        /**
         * {@inheritDoc}
         */
        public void endVisitEarComponent(IVirtualComponent component) throws CoreException
        {
            // do nothing
        }

        /**
         * {@inheritDoc}
         */
        public void visitClasspathEntry(IPath rtFolder, IClasspathEntry entry)
        {
            // do nothing
        }

        ISourceContainer[] getSourceContainers() throws CoreException
        {
            runtimeClasspath.addAll(Arrays.asList(JavaRuntime.computeUnresolvedSourceLookupPath(configuration)));
            IRuntimeClasspathEntry[] entries = (IRuntimeClasspathEntry[])runtimeClasspath.toArray(new IRuntimeClasspathEntry[runtimeClasspath.size()]);
            IRuntimeClasspathEntry[] resolved = JavaRuntime.resolveSourceLookupPath(entries,configuration);
            return JavaRuntime.getSourceContainers(resolved);
        }

    }
}