| /******************************************************************************* |
| * Copyright (c) 2000, 2005 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 API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.ui.wizards.buildpaths; |
| |
| import java.util.ArrayList; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IConfigurationElement; |
| import org.eclipse.core.runtime.IExtensionPoint; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.core.runtime.Status; |
| |
| import org.eclipse.jdt.core.IClasspathEntry; |
| |
| import org.eclipse.jdt.ui.JavaUI; |
| import org.eclipse.jdt.ui.wizards.IClasspathContainerPage; |
| |
| import org.eclipse.jdt.internal.ui.JavaPlugin; |
| import org.eclipse.jdt.internal.ui.util.CoreUtility; |
| |
| /** |
| */ |
| public class ClasspathContainerDescriptor { |
| |
| private IConfigurationElement fConfigElement; |
| private IClasspathContainerPage fPage; |
| |
| private static final String ATT_EXTENSION = "classpathContainerPage"; //$NON-NLS-1$ |
| |
| private static final String ATT_ID = "id"; //$NON-NLS-1$ |
| private static final String ATT_NAME = "name"; //$NON-NLS-1$ |
| private static final String ATT_PAGE_CLASS = "class"; //$NON-NLS-1$ |
| |
| public ClasspathContainerDescriptor(IConfigurationElement configElement) throws CoreException { |
| super(); |
| fConfigElement = configElement; |
| fPage= null; |
| |
| String id = fConfigElement.getAttribute(ATT_ID); |
| String name = configElement.getAttribute(ATT_NAME); |
| String pageClassName = configElement.getAttribute(ATT_PAGE_CLASS); |
| |
| if (name == null) { |
| throw new CoreException(new Status(IStatus.ERROR, JavaUI.ID_PLUGIN, 0, "Invalid extension (missing name): " + id, null)); //$NON-NLS-1$ |
| } |
| if (pageClassName == null) { |
| throw new CoreException(new Status(IStatus.ERROR, JavaUI.ID_PLUGIN, 0, "Invalid extension (missing page class name): " + id, null)); //$NON-NLS-1$ |
| } |
| } |
| |
| public IClasspathContainerPage createPage() throws CoreException { |
| if (fPage == null) { |
| Object elem= CoreUtility.createExtension(fConfigElement, ATT_PAGE_CLASS); |
| if (elem instanceof IClasspathContainerPage) { |
| fPage= (IClasspathContainerPage) elem; |
| } else { |
| String id= fConfigElement.getAttribute(ATT_ID); |
| throw new CoreException(new Status(IStatus.ERROR, JavaUI.ID_PLUGIN, 0, "Invalid extension (page not of type IClasspathContainerPage): " + id, null)); //$NON-NLS-1$ |
| } |
| } |
| return fPage; |
| } |
| |
| public IClasspathContainerPage getPage() { |
| return fPage; |
| } |
| |
| public void setPage(IClasspathContainerPage page) { |
| fPage= page; |
| } |
| |
| public void dispose() { |
| if (fPage != null) { |
| fPage.dispose(); |
| fPage= null; |
| } |
| } |
| |
| public String getName() { |
| return fConfigElement.getAttribute(ATT_NAME); |
| } |
| |
| public String getPageClass() { |
| return fConfigElement.getAttribute(ATT_PAGE_CLASS); |
| } |
| |
| public boolean canEdit(IClasspathEntry entry) { |
| String id = fConfigElement.getAttribute(ATT_ID); |
| if (entry.getEntryKind() == IClasspathEntry.CPE_CONTAINER) { |
| String type = entry.getPath().segment(0); |
| return id.equals(type); |
| } |
| return false; |
| } |
| |
| public static ClasspathContainerDescriptor[] getDescriptors() { |
| ArrayList containers= new ArrayList(); |
| |
| IExtensionPoint extensionPoint = Platform.getExtensionRegistry().getExtensionPoint(JavaUI.ID_PLUGIN, ATT_EXTENSION); |
| if (extensionPoint != null) { |
| ClasspathContainerDescriptor defaultPage= null; |
| String defaultPageName= ClasspathContainerDefaultPage.class.getName(); |
| |
| IConfigurationElement[] elements = extensionPoint.getConfigurationElements(); |
| for (int i = 0; i < elements.length; i++) { |
| try { |
| ClasspathContainerDescriptor curr= new ClasspathContainerDescriptor(elements[i]); |
| if (defaultPageName.equals(curr.getPageClass())) { |
| defaultPage= curr; |
| } else { |
| containers.add(curr); |
| } |
| } catch (CoreException e) { |
| JavaPlugin.log(e); |
| } |
| } |
| if (defaultPageName != null && containers.isEmpty()) { |
| // default page only added of no other extensions found |
| containers.add(defaultPage); |
| } |
| } |
| return (ClasspathContainerDescriptor[]) containers.toArray(new ClasspathContainerDescriptor[containers.size()]); |
| } |
| |
| } |