SVNLockHandler.java example

Explorer
modellipse-master
/*****************************************************************************
 * Copyright (c) 2011 Atos Origin.
 *
 *    
 * 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:
 *  Mathieu Velten (Atos Origin) mathieu.velten@atosorigin.com - Initial API and implementation
 *
 *****************************************************************************/
package org.eclipse.papyrus.team.svn;

import java.util.HashSet;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.resources.team.FileModificationValidationContext;
import org.eclipse.core.resources.team.FileModificationValidator;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Path;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.papyrus.infra.emf.readonly.IReadOnlyHandler;
import org.eclipse.team.svn.core.IStateFilter;
import org.eclipse.team.svn.core.svnstorage.SVNRemoteStorage;
import org.eclipse.team.svn.core.utility.FileUtility;
import org.eclipse.team.svn.ui.SVNTeamModificationValidator;

public class SVNLockHandler implements IReadOnlyHandler {

	FileModificationValidator validator = null;


	public SVNLockHandler() {
		try {
			validator = new SVNTeamModificationValidator();
		} catch (NoClassDefFoundError e) {
		}
	}

	public boolean isReadOnly(URI[] uris, EditingDomain editingDomain) {

		if (validator != null) {
			IResource[] needsLockResources = FileUtility.filterResources(getIFiles(uris), IStateFilter.SF_NEEDS_LOCK, IResource.DEPTH_ZERO);
			for(IResource needsLockResource : needsLockResources) {
				if(!SVNRemoteStorage.instance().asLocalResource(needsLockResource).isLocked()) {
					return true;
				}
			}
		}

		return false;
	}

	private IFile[] getIFiles(URI[] uris) {
		HashSet<IFile> iFilesSet = new HashSet<IFile>();
		for(URI uri : uris) {
			IFile iFile = getFile(uri);
			if (iFile != null) {
				iFilesSet.add(iFile);
			}
		}
		return iFilesSet.toArray(new IFile[iFilesSet.size()]);
	}

	private static IFile getFile(URI uri) {
		if(uri.isPlatform()) {
			return ResourcesPlugin.getWorkspace().getRoot().getFile(new Path(uri.toPlatformString(true)));
		}
		return null;
	}

	public boolean enableWrite(URI[] uris, EditingDomain editingDomain) {
		if (validator != null) {
			IStatus result = validator.validateEdit(getIFiles(uris), FileModificationValidationContext.VALIDATE_PROMPT);
			return result.isOK();
		}
		return false;
	}
}