org.eclipse.m2e.jdt.internal.DownloadSourcesActionDelegate.java Source code

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Here is the source code for org.eclipse.m2e.jdt.internal.DownloadSourcesActionDelegate.java

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/*******************************************************************************
 * Copyright (c) 2008-2010 Sonatype, 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:
 *      Sonatype, Inc. - initial API and implementation
 *******************************************************************************/

package org.eclipse.m2e.jdt.internal;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IPackageFragmentRoot;
import org.eclipse.jdt.internal.ui.javaeditor.IClassFileEditorInput;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.ui.IEditorActionDelegate;
import org.eclipse.ui.IEditorPart;

import org.eclipse.m2e.jdt.IClasspathManager;
import org.eclipse.m2e.jdt.MavenJdtPlugin;

/**
 * DownloadSourcesActionDelegate
 * 
 * @author Anton Kraev
 */

@SuppressWarnings("restriction")
public class DownloadSourcesActionDelegate implements IEditorActionDelegate {
    private static final Logger log = LoggerFactory.getLogger(DownloadSourcesActionDelegate.class);

    public void setActiveEditor(IAction action, IEditorPart part) {

        if (part != null) {
            try {
                IClasspathManager buildpathManager = MavenJdtPlugin.getDefault().getBuildpathManager();

                IClassFileEditorInput input = (IClassFileEditorInput) part.getEditorInput();
                IJavaElement element = input.getClassFile();
                while (element.getParent() != null) {
                    element = element.getParent();
                    if (element instanceof IPackageFragmentRoot) {
                        IPackageFragmentRoot root = (IPackageFragmentRoot) element;

                        if (root.getSourceAttachmentPath() != null) {
                            // do nothing if sources attached already
                            break;
                        }

                        buildpathManager.scheduleDownload(root, true/*sources*/, false/*javadoc*/);
                    }
                }
            } catch (Exception ex) {
                log.error("Could not schedule source download", ex); //$NON-NLS-1$
            }
        }
    }

    public void run(IAction action) {
        // no need to do anything
    }

    public void selectionChanged(IAction action, ISelection selection) {
        // no need to do anything
    }

}