/*******************************************************************************
* Copyright (C) 2010, 2013 Dariusz Luksza <dariusz@luksza.org> 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
*******************************************************************************/
package org.eclipse.egit.ui.internal;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import org.eclipse.egit.ui.Activator;
import org.eclipse.jface.dialogs.IInputValidator;
import org.eclipse.jgit.lib.RefDatabase;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.util.StringUtils;
import org.eclipse.osgi.util.NLS;
/**
* A collection of validators
*/
public class ValidationUtils {
/**
* Creates and returns input validator for refNames
*
* @param repo
* @param refPrefix
* @param errorOnEmptyName
* @return input validator for refNames
*/
public static IInputValidator getRefNameInputValidator(
final Repository repo, final String refPrefix, final boolean errorOnEmptyName) {
return new IInputValidator() {
public String isValid(String newText) {
if (newText.length() == 0) {
if (errorOnEmptyName)
return UIText.ValidationUtils_PleaseEnterNameMessage;
else
// ignore this
return null;
}
String testFor = refPrefix + newText;
if (!Repository.isValidRefName(testFor))
return NLS.bind(
UIText.ValidationUtils_InvalidRefNameMessage,
testFor);
try {
if (repo.resolve(testFor) != null)
return NLS.bind(
UIText.ValidationUtils_RefAlreadyExistsMessage,
testFor);
RefDatabase refDatabase = repo.getRefDatabase();
Collection<String> conflictingNames = refDatabase.getConflictingNames(testFor);
if (!conflictingNames.isEmpty()) {
ArrayList<String> names = new ArrayList<String>(conflictingNames);
Collections.sort(names);
String joined = StringUtils.join(names, ", "); //$NON-NLS-1$
return NLS.bind(
UIText.ValidationUtils_RefNameConflictsWithExistingMessage,
joined);
}
} catch (IOException e1) {
Activator.logError(NLS.bind(
UIText.ValidationUtils_CanNotResolveRefMessage,
testFor), e1);
return e1.getMessage();
}
return null;
}
};
}
}