| //------------------------------------------------------------------------------ |
| // 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.library.ui.wizards; |
| |
| import java.lang.reflect.Constructor; |
| import java.util.HashMap; |
| 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.common.serviceability.DebugTrace; |
| import org.eclipse.epf.library.ui.LibraryUIPlugin; |
| import org.eclipse.epf.library.ui.internal.wizards.NewLibraryWizardPageContribution; |
| import org.osgi.framework.Bundle; |
| |
| /** |
| * Manages the New Library wizard pages defined via the |
| * "org.eclipse.epf.library.ui.newLibraryWizardPages" extension point. |
| * |
| * @author Kelvin Low |
| * @since 1.0 |
| */ |
| public class NewLibraryWizardPageFactory { |
| |
| /** |
| * The extension point namespace. |
| */ |
| public static final String EXTENSION_POINT_NAMESPACE = "org.eclipse.epf.library.ui"; //$NON-NLS-1$ |
| |
| /** |
| * The extension point name. |
| */ |
| public static final String EXTENSION_POINT_NAME = "newLibraryWizardPages"; //$NON-NLS-1$ |
| |
| // If true, debug tracing is enabled. |
| private static boolean debug = LibraryUIPlugin.getDefault().isDebugging(); |
| |
| // The shared instance. |
| private static NewLibraryWizardPageFactory instance = null; |
| |
| // A map of wizard page providers. |
| private Map<String, NewLibraryWizardPageContribution> wizardPageProviders = new HashMap<String, NewLibraryWizardPageContribution>(); |
| |
| // A list of wizard page instances. |
| private Map<String, NewLibraryWizardPage> wizardPages = new HashMap<String, NewLibraryWizardPage>(); |
| |
| /** |
| * Returns the shared instance. |
| */ |
| public static NewLibraryWizardPageFactory getInstance() { |
| if (instance == null) { |
| synchronized (NewLibraryWizardPageFactory.class) { |
| if (instance == null) { |
| instance = new NewLibraryWizardPageFactory(); |
| } |
| } |
| } |
| return instance; |
| } |
| |
| /** |
| * Creates a new instance. |
| */ |
| private NewLibraryWizardPageFactory() { |
| init(); |
| } |
| |
| /** |
| * Performs the necessary initialization. |
| */ |
| protected void init() { |
| if (debug) { |
| DebugTrace.print(this, "init"); //$NON-NLS-1$ |
| } |
| 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 className = configElement.getAttribute("class"); //$NON-NLS-1$ |
| String typeId = configElement.getAttribute("type"); //$NON-NLS-1$ |
| String title = configElement.getAttribute("title"); //$NON-NLS-1$ |
| String description = configElement |
| .getAttribute("description"); //$NON-NLS-1$ |
| if (debug) { |
| DebugTrace.print(this, "init", //$NON-NLS-1$ |
| "configElement, class=" + className + //$NON-NLS-1$ |
| ", type=" + typeId + //$NON-NLS-1$ |
| ", title=" + title + //$NON-NLS-1$ |
| ", description=" + description); //$NON-NLS-1$ |
| } |
| if (className != null && className.trim().length() > 0 |
| && typeId != null && typeId.trim().length() > 0 |
| && title != null && title.trim().length() > 0 |
| && description != null |
| && description.trim().length() > 0) { |
| if (!wizardPageProviders.containsKey(typeId)) { |
| NewLibraryWizardPageContribution provider = new NewLibraryWizardPageContribution( |
| bundle, className, typeId, title, |
| description); |
| wizardPageProviders.put(typeId, provider); |
| } |
| } |
| } catch (Exception e) { |
| LibraryUIPlugin.getDefault().getLogger().logError(e); |
| } |
| } |
| } |
| } |
| } |
| |
| /** |
| * Creates a wizard page. |
| * |
| * @return a <code>NewLibraryWizardPage</code> |
| */ |
| public NewLibraryWizardPage createWizardPage(String pageId, String typeId) { |
| NewLibraryWizardPage wizardPage = (NewLibraryWizardPage) wizardPages |
| .get(typeId); |
| if (wizardPage != null) { |
| return wizardPage; |
| } |
| |
| NewLibraryWizardPageContribution provider = (NewLibraryWizardPageContribution) wizardPageProviders |
| .get(typeId); |
| if (provider != null) { |
| Bundle bundle = provider.getBundle(); |
| String className = provider.getClassName(); |
| Class wizardPageClass; |
| Class[] argClass = new Class[] { String.class }; |
| Object[] argValue = new Object[] { pageId }; |
| Constructor constructor; |
| try { |
| wizardPageClass = bundle.loadClass(className); |
| constructor = wizardPageClass.getConstructor(argClass); |
| wizardPage = (NewLibraryWizardPage) constructor |
| .newInstance(argValue); |
| wizardPage.setTitle(provider.getTitle()); |
| wizardPage.setDescription(provider.getDescription()); |
| wizardPages.put(typeId, wizardPage); |
| } catch (Exception e) { |
| LibraryUIPlugin.getDefault().getLogger().logError(e); |
| } |
| } |
| return wizardPage; |
| } |
| |
| /** |
| * Returns a new or cached wizard page. |
| * |
| * @return a <code>NewLibraryWizardPage</code> object |
| */ |
| public NewLibraryWizardPage getWizardPage(String typeId) { |
| return (NewLibraryWizardPage) wizardPages.get(typeId); |
| } |
| |
| } |