| //------------------------------------------------------------------------------ |
| // Copyright (c) 2005, 2007 IBM Corporation 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: |
| // IBM Corporation - initial implementation |
| //------------------------------------------------------------------------------ |
| package org.eclipse.epf.publishing.ui; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.eclipse.core.runtime.IConfigurationElement; |
| import org.eclipse.core.runtime.IExtension; |
| import org.eclipse.core.runtime.IExtensionPoint; |
| import org.eclipse.core.runtime.IExtensionRegistry; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.epf.publishing.ui.actions.PublishAction; |
| import org.eclipse.jface.action.Action; |
| import org.osgi.framework.Bundle; |
| |
| /** |
| * Manages the creation of Publisher instances by loading the publisher extensions. |
| * |
| * @author Jinhua Xi |
| * @since 1.0 |
| */ |
| public class PublisherFactory { |
| |
| /** |
| * The extension point namespace. |
| */ |
| public static final String EXTENSION_POINT_NAMESPACE = "org.eclipse.epf.publishing.ui"; //$NON-NLS-1$ |
| |
| /** |
| * The extension point name. |
| */ |
| public static final String EXTENSION_POINT_NAME = "publishers"; //$NON-NLS-1$ |
| |
| // The shared instance. |
| private static PublisherFactory instance = null; |
| |
| // A map of publisher configuration elements. |
| private Map<String, PublisherElement> publisherMap = new HashMap<String, PublisherElement>(); |
| |
| /** |
| * Returns the shared instance. |
| */ |
| public static PublisherFactory getInstance() { |
| if (instance == null) { |
| synchronized (PublisherFactory.class) { |
| if (instance == null) { |
| instance = new PublisherFactory(); |
| } |
| } |
| } |
| return instance; |
| } |
| |
| /** |
| * Creates a new instance. |
| */ |
| private PublisherFactory() { |
| init(); |
| } |
| |
| /** |
| * Performs the necessary initialization. |
| */ |
| protected void init() { |
| // Process the "org.eclipse.epf.publishing.ui.publishers" extension point |
| // contributors. |
| IExtensionRegistry extensionRegistry = Platform.getExtensionRegistry(); |
| IExtensionPoint extensionPoint = extensionRegistry.getExtensionPoint( |
| EXTENSION_POINT_NAMESPACE, EXTENSION_POINT_NAME); |
| if (extensionPoint != null) { |
| IExtension[] extensions = extensionPoint.getExtensions(); |
| for (int i = 0; i < extensions.length; i++) { |
| IExtension extension = extensions[i]; |
| String pluginId = extension.getNamespaceIdentifier(); |
| Bundle bundle = Platform.getBundle(pluginId); |
| IConfigurationElement[] configElements = extension |
| .getConfigurationElements(); |
| for (int j = 0; j < configElements.length; j++) { |
| IConfigurationElement configElement = configElements[j]; |
| try { |
| String id = configElement.getAttribute("id"); //$NON-NLS-1$ |
| String name = configElement.getAttribute("label"); //$NON-NLS-1$ |
| String icon = configElement.getAttribute("icon"); //$NON-NLS-1$ |
| String wizardClassName = configElement.getAttribute("wizardClass"); //$NON-NLS-1$ |
| String managerClassName = configElement.getAttribute("managerClass"); //$NON-NLS-1$ |
| if ( id != null && id.trim().length() > 0 |
| && name != null && name.trim().length() > 0 |
| && wizardClassName != null && wizardClassName.trim().length() > 0 |
| && managerClassName != null && managerClassName.trim().length() > 0 ) { |
| if (!publisherMap.containsKey(name)) { |
| PublisherElement provider = new PublisherElement( |
| bundle, id, name, icon, wizardClassName, managerClassName); |
| |
| publisherMap.put(id, provider); |
| } |
| } |
| } catch (Exception e) { |
| PublishingUIPlugin.getDefault().getLogger().logError(e); |
| } |
| } |
| } |
| } |
| } |
| |
| |
| /** |
| * get the publisher element which defines the publisher extension |
| * |
| * @param id String id of the publisher |
| * |
| * @return PublisherElement |
| */ |
| public PublisherElement getPublisherElement(String id) { |
| return (PublisherElement)publisherMap.get(id); |
| } |
| |
| /** |
| * get all publisher elements |
| * |
| * @return List a list of PublisherElement objects |
| */ |
| public List getPublisherElements() { |
| return new ArrayList(publisherMap.values()); |
| } |
| |
| /** |
| * create the UI actions for the publishers |
| * |
| * @return Action[] |
| */ |
| public Action[] createPublishActions() { |
| List items = new ArrayList(); |
| for ( Iterator it = getPublisherElements().iterator(); it.hasNext(); ) { |
| PublisherElement e = (PublisherElement)it.next(); |
| |
| Action action = new PublishAction(e.getId(), e.getLabel(), e.getImageDescriptor()); |
| items.add(action); |
| } |
| |
| int size = items.size(); |
| Action[] actions = new Action[size]; |
| items.toArray(actions); |
| |
| return actions; |
| } |
| } |