/* | |
* Copyright (C) 2012 The Android Open Source Project | |
* | |
* Licensed under the Apache License, Version 2.0 (the "License"); | |
* you may not use this file except in compliance with the License. | |
* You may obtain a copy of the License at | |
* | |
* http://www.apache.org/licenses/LICENSE-2.0 | |
* | |
* Unless required by applicable law or agreed to in writing, software | |
* distributed under the License is distributed on an "AS IS" BASIS, | |
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
* See the License for the specific language governing permissions and | |
* limitations under the License. | |
*/ | |
package com.motorolamobility.studio.android.db.core.ui.wizards.createdb; | |
import java.util.List; | |
import java.util.regex.Matcher; | |
import java.util.regex.Pattern; | |
import org.eclipse.jface.dialogs.IInputValidator; | |
import org.eclipse.osgi.util.NLS; | |
import com.motorolamobility.studio.android.db.core.i18n.DbCoreNLS; | |
/** | |
* This class represents a database name validator. The name must not | |
* not already exists in the Database View tree and must follow a certain pattern. | |
*/ | |
public class DatabaseCreationFieldValidator implements IInputValidator | |
{ | |
/** | |
* The regular expression pattern used to validate the database name provided by the user | |
*/ | |
private static final String VALIDATOR_PATTERN = "[a-zA-Z0-9 ._-]+(.db)?"; //$NON-NLS-1$ | |
/** | |
* The extension of the database files at the device | |
*/ | |
private static final String DB_EXTENSION = ".db"; //$NON-NLS-1$ | |
/** | |
* Expression pattern used to validate the database name provided by the user | |
*/ | |
private final Pattern pattern = Pattern.compile(VALIDATOR_PATTERN); | |
private final List<String> alreadyAvailableDbs; | |
public DatabaseCreationFieldValidator(final List<String> alreadyAvailableDbs) | |
{ | |
this.alreadyAvailableDbs = alreadyAvailableDbs; | |
} | |
/* | |
* (non-Javadoc) | |
* @see org.eclipse.jface.dialogs.IInputValidator#isValid(java.lang.String) | |
*/ | |
public String isValid(String newText) | |
{ | |
String msg = null; | |
Matcher patternMatcher = pattern.matcher(newText); | |
if (!patternMatcher.matches()) | |
{ | |
msg = DbCoreNLS.DatabaseCreationFieldValidator_ValidChars; | |
} | |
else | |
// check whether the database already exists | |
{ | |
String dbFileName = newText + DB_EXTENSION; | |
if (alreadyAvailableDbs.contains(dbFileName)) | |
{ | |
msg = | |
NLS.bind(DbCoreNLS.DatabaseCreationFieldValidator_DB_Already_Exists_Msg, | |
dbFileName); | |
} | |
} | |
return msg; | |
} | |
} |