RemoveFromLibraryPackAction.java

/*******************************************************************************
 * Copyright (c) 2008 Pierre-Antoine Grégoire.
 * 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:
 *    Pierre-Antoine Grégoire - initial API and implementation
 *******************************************************************************/
package org.org.eclipse.dws.ui.internal.views.actions;

import java.util.List;

import org.eclipse.jface.viewers.IStructuredSelection;
import org.org.eclipse.core.utils.platform.actions.IActionHost;
import org.org.eclipse.core.utils.platform.actions.IActionResolver;
import org.org.eclipse.dws.core.internal.bridges.LibraryPackModelPersistence;
import org.org.eclipse.dws.ui.internal.views.LibraryPacksView;
import org.org.repository.crawler.maven2.model.Artifact;
import org.org.repository.crawler.maven2.model.ArtifactVersion;
import org.org.repository.crawler.maven2.model.Group;
import org.org.repository.crawler.maven2.model.GroupsHolder;

/**
 * The Class RemoveLibraryPackAction.
 * 
 * @author pagregoire
 */
public class RemoveFromLibraryPackAction extends AbstractDWSViewAction {

	/** The resolver. */
	private IActionResolver resolver;

	/** The action host. */
	private IActionHost actionHost;

	/**
	 * Instantiates a new removes the library pack action.
	 * 
	 * @param actionHost
	 *            the action host
	 */
	public RemoveFromLibraryPackAction(IActionHost actionHost) {
		super(actionHost);
		this.actionHost = actionHost;
	}

	/**
	 * @see org.eclipse.jface.action.Action#isEnabled()
	 */
	@Override
	public boolean isEnabled() {
		boolean result = false;
		if (resolver == null) {
			result = false;
		} else {
			result = resolver.isEnabled();
		}
		return result;
	}

	/**
	 * Sets the resolver.
	 * 
	 * @param resolver
	 *            the new resolver
	 */
	public void setResolver(IActionResolver resolver) {
		this.resolver = resolver;
	}

	/**
	 * @see org.eclipse.jface.action.Action#run()
	 */
	@Override
	public void run() {
		IStructuredSelection selection = (IStructuredSelection) actionHost.getActionTrigger();
		List<ArtifactVersion> artifactVersions = retrieveArtifactVersions(selection);
		for (ArtifactVersion artifactVersion : artifactVersions) {
			Artifact artifact = artifactVersion.getParent();
			Group group = artifact.getParent();
			GroupsHolder groupsHolder = group.getParent();
			artifact.removeChild(artifactVersion.getUID());
			if (!artifact.hasChildren()) {
				// Artifact has no more children, let's remove it.
				group.removeChild(artifact.getUID());
				if (!group.hasChildren()) {
					// Group has no more children, let's remove it.
					groupsHolder.removeChild(group.getUID());
				}
			}
		}
		LibraryPackModelPersistence.saveLibraryPackInfo();
		LibraryPacksView.refreshViewer();
	}
}