org.eclipse.virgo.ide.jdt.internal.ui.actions.EnableServerClasspathContainerActionDelegate.java Source code

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Here is the source code for org.eclipse.virgo.ide.jdt.internal.ui.actions.EnableServerClasspathContainerActionDelegate.java

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/*******************************************************************************
 * Copyright (c) 2009 SpringSource, a divison of VMware, Inc.
 * 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:
 *     SpringSource, a division of VMware, Inc. - initial API and implementation
 *******************************************************************************/
package org.eclipse.virgo.ide.jdt.internal.ui.actions;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IObjectActionDelegate;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.virgo.ide.facet.core.FacetUtils;
import org.eclipse.virgo.ide.jdt.core.JdtCorePlugin;
import org.eclipse.virgo.ide.jdt.internal.core.classpath.ServerClasspathContainer;
import org.eclipse.virgo.ide.jdt.internal.core.util.ClasspathUtils;
import org.springframework.ide.eclipse.core.java.JdtUtils;

/**
 * Menu action to refresh the bundle classpath container.
 * @author Christian Dupuis
 * @since 1.1.3
 */
public class EnableServerClasspathContainerActionDelegate implements IObjectActionDelegate {

    private final List<IProject> selected = new ArrayList<IProject>();

    public void run(IAction action) {
        Set<IJavaProject> projects = new LinkedHashSet<IJavaProject>();
        Iterator<IProject> iter = selected.iterator();
        while (iter.hasNext()) {
            IProject project = iter.next();
            if (FacetUtils.isBundleProject(project)) {
                projects.add(JdtUtils.getJavaProject(project));
            } else if (FacetUtils.isParProject(project)) {
                for (IProject bundle : FacetUtils.getBundleProjects(project)) {
                    projects.add(JdtUtils.getJavaProject(bundle));
                }
            }
        }

        for (IJavaProject javaProject : projects) {
            try {
                if (ClasspathUtils.hasClasspathContainer(javaProject)) {
                    removeFromClasspath(javaProject,
                            JavaCore.newContainerEntry(ServerClasspathContainer.CLASSPATH_CONTAINER_PATH, null,
                                    ServerClasspathContainer.CLASSPATH_CONTAINER_ATTRIBUTE, false),
                            new NullProgressMonitor());
                    // Remove any error markers that might hang around
                    javaProject.getProject().deleteMarkers(JdtCorePlugin.DEPENDENCY_PROBLEM_MARKER_ID, true,
                            IResource.DEPTH_INFINITE);
                } else {
                    addToClasspath(javaProject,
                            JavaCore.newContainerEntry(ServerClasspathContainer.CLASSPATH_CONTAINER_PATH, null,
                                    ServerClasspathContainer.CLASSPATH_CONTAINER_ATTRIBUTE, false),
                            new NullProgressMonitor());
                }
            } catch (CoreException e) {
                JdtCorePlugin.log(e);
            }
        }

    }

    public void selectionChanged(IAction action, ISelection selection) {
        selected.clear();
        if (selection instanceof IStructuredSelection) {
            boolean enabled = true;
            Iterator<?> iter = ((IStructuredSelection) selection).iterator();
            while (iter.hasNext()) {
                Object obj = iter.next();
                if (obj instanceof IJavaProject) {
                    obj = ((IJavaProject) obj).getProject();
                }
                if (obj instanceof IProject) {
                    IProject project = (IProject) obj;
                    if (!project.isOpen()) {
                        enabled = false;
                        break;
                    } else {
                        selected.add(project);
                    }
                } else {
                    enabled = false;
                    break;
                }
            }
            action.setEnabled(enabled);
        }
    }

    private void addToClasspath(IJavaProject javaProject, IClasspathEntry entry, IProgressMonitor monitor)
            throws CoreException {
        IClasspathEntry[] current = javaProject.getRawClasspath();
        IClasspathEntry[] updated = new IClasspathEntry[current.length + 1];
        System.arraycopy(current, 0, updated, 0, current.length);
        updated[current.length] = entry;
        javaProject.setRawClasspath(updated, monitor);
    }

    protected void removeFromClasspath(IJavaProject javaProject, IClasspathEntry entry, IProgressMonitor monitor)
            throws CoreException {
        Set<IClasspathEntry> entries = new LinkedHashSet<IClasspathEntry>();
        for (IClasspathEntry existingEntry : javaProject.getRawClasspath()) {
            if (!existingEntry.equals(entry)) {
                entries.add(existingEntry);
            }
        }
        javaProject.setRawClasspath(entries.toArray(new IClasspathEntry[entries.size()]), monitor);
    }

    public void setActivePart(IAction action, IWorkbenchPart targetPart) {
    }

}