| /******************************************************************************* |
| * Copyright (c) 2006 Sybase, Inc. 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: |
| * Sybase, Inc. - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jst.pagedesigner.converter; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.jface.viewers.LabelProvider; |
| import org.eclipse.jst.jsf.common.ui.JSFUICommonPlugin; |
| import org.eclipse.jst.jsf.common.ui.internal.utils.JSFSharedImages; |
| import org.eclipse.jst.jsf.core.internal.tld.CMUtil; |
| import org.eclipse.jst.jsf.core.internal.tld.ITLDConstants; |
| import org.eclipse.jst.pagedesigner.PageDesignerTraceOptions; |
| import org.eclipse.jst.pagedesigner.converter.html.HTMLConverterFactory; |
| import org.eclipse.jst.pagedesigner.converter.jsp.JSPConverterFactory; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.wst.xml.core.internal.contentmodel.CMElementDeclaration; |
| import org.eclipse.wst.xml.core.internal.provisional.document.IDOMDocument; |
| import org.w3c.dom.Element; |
| |
| /** |
| * @author mengbo |
| * @version 1.5 |
| */ |
| public class ConverterFactoryRegistry |
| { |
| List _factories = new ArrayList(); |
| |
| private static ConverterFactoryRegistry _instance; |
| |
| /** |
| * |
| */ |
| private ConverterFactoryRegistry() |
| { |
| final List<IConverterFactory> facs = ConverterFacRegistryReader |
| .getAllHandlers(); |
| if (facs != null) |
| { |
| for (final IConverterFactory fac : facs) |
| { |
| addFactory(fac); |
| } |
| } |
| _factories.add(new JSPConverterFactory()); |
| _factories.add(new HTMLConverterFactory()); |
| |
| // TODO: this is not ideal, but until we get a better system for |
| // doing converter factory ordering: |
| // loop through the list and place the DTManager |
| } |
| |
| /** |
| * @param fac |
| */ |
| public void addFactory(final IConverterFactory fac) |
| { |
| _factories.add(fac); |
| } |
| |
| /** |
| * @param ele |
| * @param mode |
| * @param targetDocument |
| * @return the new btag converter |
| */ |
| public ITagConverter createTagConverter(final Element ele, final int mode, |
| final IDOMDocument targetDocument) |
| { |
| final ITagConverter converter = internalCreateTagConverter(ele, mode); |
| if (converter != null) |
| { |
| converter.setDestDocument(targetDocument); |
| } |
| return converter; |
| } |
| |
| /** |
| * @param ele |
| * @param mode |
| * @return the new tag converter |
| */ |
| protected final ITagConverter internalCreateTagConverter(final Element ele, |
| final int mode) |
| { |
| final String uri = CMUtil.getElementNamespaceURI(ele); |
| // first round, match uri |
| for (int i = 0, size = _factories.size(); i < size; i++) |
| { |
| final IConverterFactory fac = (IConverterFactory) _factories.get(i); |
| final String facuri = fac.getSupportedURI(); |
| if (facuri != null && facuri.equals(uri)) |
| { |
| final ITagConverter converter = fac.createConverter(ele, mode); |
| if (converter != null) |
| { |
| if (PageDesignerTraceOptions.TRACE_CONVERTERSELECT) |
| { |
| PageDesignerTraceOptions |
| .log("ConverterFactoryRegistry: first loop, " //$NON-NLS-1$ |
| + String |
| .format( |
| "Selected converter %s for uri=%s, tagname=%s", //$NON-NLS-1$ |
| converter.getClass() |
| .getName(), |
| uri, ele.getLocalName())); |
| } |
| return converter; |
| } |
| } |
| } |
| // second round |
| for (int i = 0, size = _factories.size(); i < size; i++) |
| { |
| final IConverterFactory fac = (IConverterFactory) _factories.get(i); |
| final String facuri = fac.getSupportedURI(); |
| if (facuri == null) |
| { |
| final ITagConverter converter = fac.createConverter(ele, mode); |
| if (converter != null) |
| { |
| if (PageDesignerTraceOptions.TRACE_CONVERTERSELECT) |
| { |
| PageDesignerTraceOptions |
| .log("ConverterFactoryRegistry: second loop, " //$NON-NLS-1$ |
| + String |
| .format( |
| "Selected converter %s for uri=%s, tagname=%s", //$NON-NLS-1$ |
| converter.getClass() |
| .getName(), |
| uri, ele.getLocalName())); |
| } |
| return converter; |
| } |
| } |
| } |
| |
| // can't find. We need some default tag converter for it. |
| // if the tag is empty, show it as icon. |
| if (uri == null || ITLDConstants.URI_HTML.equals(uri)) |
| { |
| if (PageDesignerTraceOptions.TRACE_CONVERTERSELECT) |
| { |
| PageDesignerTraceOptions |
| .log("ConverterFactoryRegistry: factory not found, " //$NON-NLS-1$ |
| + String |
| .format( |
| "Selected DumTagConverter for uri=%s, tagname=%s", //$NON-NLS-1$ |
| uri, ele.getLocalName())); |
| } |
| |
| // basically, for HTML or non JSP tag, directly renders it. |
| return new DumTagConverter(ele); |
| } |
| final CMElementDeclaration decl = CMUtil.getElementDeclaration(ele); |
| if (decl == null) |
| { |
| if (PageDesignerTraceOptions.TRACE_CONVERTERSELECT) |
| { |
| PageDesignerTraceOptions |
| .log("ConverterFactoryRegistry: factory and decl not found, " //$NON-NLS-1$ |
| + String |
| .format( |
| "Selected DumTagConverter for uri=%s, tagname=%s", //$NON-NLS-1$ |
| uri, ele.getLocalName())); |
| } |
| return new DumTagConverter(ele); |
| } |
| final int contentType = decl.getContentType(); |
| if (contentType == CMElementDeclaration.EMPTY) |
| { |
| if (PageDesignerTraceOptions.TRACE_CONVERTERSELECT) |
| { |
| PageDesignerTraceOptions |
| .log("ConverterFactoryRegistry: factory not found, content is EMPTY, " //$NON-NLS-1$ |
| + String |
| .format( |
| "Selected HiddenTagConverter with UnknownImage for uri=%s, tagname=%s", //$NON-NLS-1$ |
| uri, ele.getLocalName())); |
| } |
| |
| // if the tag is empty, show it as icon. |
| return new HiddenTagConverter(ele, new LabelProvider() |
| { |
| @Override |
| public Image getImage(final Object element) |
| { |
| return getUnknownImage(); |
| } |
| }); |
| } |
| if (PageDesignerTraceOptions.TRACE_CONVERTERSELECT) |
| { |
| PageDesignerTraceOptions |
| .log("ConverterFactoryRegistry: fall-through to default case, " //$NON-NLS-1$ |
| + String |
| .format( |
| "Selected DefaultUnknownTagConverter with UnknownImage for uri=%s, tagname=%s", //$NON-NLS-1$ |
| uri, ele.getLocalName())); |
| } |
| return new DefaultUnknownTagConverter(ele, mode); |
| |
| } |
| |
| private static Image getUnknownImage() |
| { |
| return JSFUICommonPlugin.getDefault().getImage( |
| JSFSharedImages.DEFAULT_PALETTE_TAG_IMG); |
| } |
| |
| /** |
| * @return the singleton instance of the registry |
| */ |
| public synchronized static ConverterFactoryRegistry getInstance() |
| { |
| if (_instance == null) |
| { |
| _instance = new ConverterFactoryRegistry(); |
| } |
| return _instance; |
| } |
| } |
