org.jboss.tools.common.ui.ValidatorFactory.java Source code

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Here is the source code for org.jboss.tools.common.ui.ValidatorFactory.java

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/******************************************************************************* 
 * Copyright (c) 2009 Red Hat, Inc. 
 * Distributed under license by Red Hat, Inc. All rights reserved. 
 * This program is 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: 
 * Red Hat, Inc. - initial API and implementation 
 ******************************************************************************/
package org.jboss.tools.common.ui;

import java.io.File;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.internal.compiler.impl.CompilerOptions;
import org.eclipse.osgi.util.NLS;

/**
 * @author Alexey Kazakov
 */
public class ValidatorFactory {

    public static final String DEFAULT_SOURCE_LEVEL = CompilerOptions.VERSION_1_5;
    public static final String DEFAULT_COMPLIANCE_LEVEL = DEFAULT_SOURCE_LEVEL;

    static public Map<String, IValidator> validators = new HashMap<String, IValidator>();

    static public final Map<String, IStatus> NO_ERRORS = Collections
            .unmodifiableMap(new HashMap<String, IStatus>());

    static public IValidator NO_ERRORS_VALIDATOR = new IValidator() {
        public Map<String, IStatus> validate(Object value, Object context) {
            return NO_ERRORS;
        }
    };

    /**
     * 
     * @param id
     * @return
     */
    public static IValidator getValidator(String id) {
        IValidator validator = validators.get(id);
        return validator == null ? NO_ERRORS_VALIDATOR : validator;
    }

    /**
     * 
     * @return
     */
    public static Map<String, IStatus> createErrorMap() {
        return new HashMap<String, IStatus>();
    }

    /**
     * 
     * @param text
     * @return
     */
    public static Map<String, IStatus> createErrormessage(IStatus message) {
        Map<String, IStatus> map = createErrorMap();
        map.put(IValidator.DEFAULT_ERROR, message);
        return map;
    }

    /**
     * 
     * @param text
     * @return
     */
    public static Map<String, IStatus> createErrormessage(String propertyName, IStatus message) {
        Map<String, IStatus> map = createErrorMap();
        map.put(propertyName, message);
        return map;
    }

    public static final IValidator FILE_SYSTEM_FOLDER_EXISTS = new IValidator() {

        public Map<String, IStatus> validate(Object value, Object context) {
            if (value == null)
                throw new IllegalArgumentException(
                        CommonUIMessages.VALIDATOR_FACTORY_PATH_TO_A_FOLDER_CANNOT_BE_NULL);
            String folderPath = value.toString();
            File folder = new File(folderPath);

            if (!folder.exists())
                return createErrormessage(new Status(IStatus.ERROR, CommonUIPlugin.PLUGIN_ID,
                        NLS.bind(CommonUIMessages.VALIDATOR_FACTORY_FOLDER_DOES_NOT_EXIST, folderPath)));
            if (!folder.isDirectory())
                return createErrormessage(new Status(IStatus.ERROR, CommonUIPlugin.PLUGIN_ID,
                        NLS.bind(CommonUIMessages.VALIDATOR_FACTORY_PATH_POINTS_TO_FILE, folderPath)));
            return NO_ERRORS;
        }
    };

    /**
     * 
     * @param jProject
     * @return java project's CompilerSourceLevel or default one.
     */
    public static String getCompilerSourceLevel(IJavaProject jProject) {
        if (jProject == null) {
            return DEFAULT_SOURCE_LEVEL;
        }
        String sourceLevel = jProject.getOption(JavaCore.COMPILER_SOURCE, true);
        return sourceLevel != null ? sourceLevel : DEFAULT_SOURCE_LEVEL;
    }

    /**
     * 
     * @param jProject
     * @return java project's CompilerComplianceLevel or default one.
     */
    public static String getCompilerComplianceLevel(IJavaProject jProject) {
        if (jProject == null) {
            return DEFAULT_COMPLIANCE_LEVEL;
        }
        String compliance = jProject.getOption(JavaCore.COMPILER_COMPLIANCE, true);
        return compliance != null ? compliance : DEFAULT_SOURCE_LEVEL;
    }
}