DoctypeFactory.java

/*******************************************************************************
 * Copyright (c) 2004, 2008 John Krasnay 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
 * 
 * Contributors:
 *     John Krasnay - initial API and implementation
 *******************************************************************************/
package net.sf.vex.editor.config;

import java.io.IOException;
import java.net.URL;

import net.sf.vex.dom.DTDValidator;

import com.wutka.dtd.DTDParseException;

/**
 * Factory for DocumentType objects.
 */
public class DoctypeFactory implements IConfigItemFactory {
    
    public IConfigElement[] createConfigurationElements(ConfigItem item) {
        DocumentType doctype = (DocumentType) item;
        ConfigurationElement doctypeElement = new ConfigurationElement(ELT_DOCTYPE);
        doctypeElement.setAttribute(ATTR_PUBLIC_ID, doctype.getPublicId());
        doctypeElement.setAttribute(ATTR_SYSTEM_ID, doctype.getSystemId());
        doctypeElement.setAttribute(ATTR_DTD, doctype.getResourcePath());
        doctypeElement.setAttribute(ATTR_OUTLINE_PROVIDER, doctype.getOutlineProvider());
        
        String[] names = doctype.getRootElements();
        for (int i = 0; i < names.length; i++) {
            String name = names[i];
            ConfigurationElement rootElement = new ConfigurationElement(ELT_ROOT_ELEMENT);
            rootElement.setAttribute(ATTR_NAME, name);
            doctypeElement.addChild(rootElement);
        }
        
        return new IConfigElement[] { doctypeElement };
    }

    public ConfigItem createItem(ConfigSource config, IConfigElement[] configElements) throws IOException {
        if (configElements.length < 1) {
            return null;
        }
        IConfigElement configElement = configElements[0];
        DocumentType doctype = new DocumentType(config);
        doctype.setPublicId(configElement.getAttribute(ATTR_PUBLIC_ID));
        doctype.setSystemId(configElement.getAttribute(ATTR_SYSTEM_ID));
        doctype.setResourcePath(configElement.getAttribute(ATTR_DTD));
        doctype.setOutlineProvider(configElement.getAttribute(ATTR_OUTLINE_PROVIDER));

        IConfigElement[] rootElementRefs = configElement.getChildren();
        String[] rootElements = new String[rootElementRefs.length];
        for (int i = 0; i < rootElementRefs.length; i++) {
            rootElements[i] = rootElementRefs[i].getAttribute("name"); //$NON-NLS-1$
        }
        doctype.setRootElements(rootElements);

        return doctype;
    }

    public String getExtensionPointId() {
        return DocumentType.EXTENSION_POINT;
    }

    public String[] getFileExtensions() {
        return EXTS;
    }

    public String getPluralName() {
        return Messages.getString("DoctypeFactory.pluralName"); //$NON-NLS-1$
    }

    public Object parseResource(URL baseUrl, String resourcePath, IBuildProblemHandler problemHandler) throws IOException {
        try {
			return DTDValidator.create(new URL(
					"file:/c:/IT/workspace_ae-2.1/org.bbaw.pdr.ae.view.xml.vex.test.aodl/aodl/aodl.dtd")); // (baseUrl,
																										// resourcePath));
        } catch (DTDParseException ex) {
            if (problemHandler != null) {
                BuildProblem problem = new BuildProblem();
                problem.setSeverity(BuildProblem.SEVERITY_ERROR);
                problem.setResourcePath(resourcePath);
                problem.setMessage(ex.getMessage());
                problem.setLineNumber(ex.getLineNumber());
                problemHandler.foundProblem(problem);
            }
            throw ex;
        }
    }

    //=================================================== PRIVATE
    
    private static final String[] EXTS = new String[] { "dtd" }; //$NON-NLS-1$

    private static final String ELT_DOCTYPE = "doctype"; //$NON-NLS-1$
    private static final String ATTR_OUTLINE_PROVIDER = "outlineProvider"; //$NON-NLS-1$
    private static final String ATTR_DTD = "dtd"; //$NON-NLS-1$
    private static final String ATTR_SYSTEM_ID = "systemId"; //$NON-NLS-1$
    private static final String ATTR_PUBLIC_ID = "publicId"; //$NON-NLS-1$
    
    private static final String ELT_ROOT_ELEMENT = "rootElement"; //$NON-NLS-1$
    private static final String ATTR_NAME = "name"; //$NON-NLS-1$

}