| /******************************************************************************* |
| * Copyright (c) 2021 Obeo. |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Obeo - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.sirius.table.ui.tools.internal.editor.provider; |
| |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.text.MessageFormat; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.LinkedHashSet; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.eclipse.core.resources.ResourcesPlugin; |
| import org.eclipse.core.runtime.FileLocator; |
| import org.eclipse.core.runtime.Path; |
| import org.eclipse.emf.common.util.URI; |
| import org.eclipse.emf.ecore.plugin.EcorePlugin; |
| import org.eclipse.emf.ecore.resource.Resource; |
| import org.eclipse.sirius.business.internal.session.danalysis.DAnalysisSessionImpl; |
| import org.eclipse.sirius.common.tools.api.interpreter.ClassLoading; |
| import org.eclipse.sirius.common.tools.api.interpreter.IInterpreter; |
| import org.eclipse.sirius.common.tools.api.interpreter.JavaExtensionsManager; |
| import org.eclipse.sirius.common.tools.internal.interpreter.ClassLoadingService; |
| import org.eclipse.sirius.table.metamodel.table.provider.Messages; |
| import org.eclipse.sirius.table.ui.tools.api.editor.ITableCellEditorFactory; |
| import org.eclipse.sirius.viewpoint.description.Viewpoint; |
| |
| /** |
| * The {@link CellEditorFactoryManager} loads an instance of {@link ITableCellEditorFactory} corresponding to a |
| * qualified name and based on the current search scope (defined by the session). The class is searched in all plug-ins |
| * containing the activated viewpoints (and in plug-in dependencies).<BR/> |
| * Inspired from class {@link JavaExtensionsManager}. |
| * |
| * @author lredor |
| */ |
| public final class CellEditorFactoryManager { |
| |
| /** |
| * This will be updated with the list of accessible viewpoint plugins, if |
| * any. |
| */ |
| private Set<String> viewpointPlugins = new LinkedHashSet<>(); |
| |
| /** |
| * This will be updated with the list of accessible viewpoint projects |
| * present in the workspace, if any. |
| */ |
| private Set<String> viewpointProjects = new LinkedHashSet<>(); |
| |
| |
| private ClassLoading classLoading; |
| |
| /** |
| * Create a new CellEditorFactoryManager. |
| * |
| * @param session |
| * The current session to initialize the scope (necessary to load factory class). |
| * |
| */ |
| private CellEditorFactoryManager(DAnalysisSessionImpl session) { |
| classLoading = ClassLoadingService.getClassLoading(); |
| configure(session); |
| } |
| |
| /** |
| * Get the ITableCellEditorFactory corresponding to the <code>qualifiedClassName</code>. |
| * |
| * @param session |
| * The current session to initialize the scope (necessary to load the CellEditorFactory class). |
| * @param qualifiedClassName |
| * the Java qualified name of a class to consider as a {@link ITableCellEditorFactory} |
| * @return the ITableCellEditorFactory (IllegalArgumentException is returned with cause if the CellEditorFactory can |
| * not be returned) |
| * @throws IllegalArgumentException |
| * in case of the method can not get the CellEditorFactory corresponding to the |
| * <code>qualifiedClassName</code>. |
| */ |
| public static ITableCellEditorFactory getCellEditorFactory(DAnalysisSessionImpl session, String qualifiedClassName) throws IllegalArgumentException { |
| CellEditorFactoryManager cellEditorFactoryManager = new CellEditorFactoryManager(session); |
| ITableCellEditorFactory result; |
| try { |
| result = cellEditorFactoryManager.instantiateCellEditorFactory(qualifiedClassName); |
| return result; |
| } finally { |
| cellEditorFactoryManager.dispose(); |
| } |
| } |
| |
| /** |
| * Configure the searched scope corresponding to this session (the selected viewpoints, more precisely their |
| * plug-ins and their dependencies, are used to retrieve accessible classes). |
| */ |
| void configure(DAnalysisSessionImpl dasi) { |
| // Calculate paths of the activated representation description files. |
| List<String> filePaths = new ArrayList<String>(); |
| for (Viewpoint vp : dasi.getSelectedViewpointsSpecificToGeneric()) { |
| Resource vpResource = vp.eResource(); |
| if (vpResource != null) { |
| filePaths.add(vpResource.getURI().toPlatformString(true)); |
| } |
| } |
| updateScope(filePaths); |
| } |
| |
| /** |
| * Clear the resources used by the {@link CellEditorFactoryManager}. |
| */ |
| public void dispose() { |
| classLoading.dispose(); |
| this.viewpointPlugins.clear(); |
| this.viewpointProjects.clear(); |
| } |
| |
| /** |
| * Instantiate the ITableCellEditorFactory corresponding to the <code>qualifiedClassName</code>. |
| * |
| * @param qualifiedClassName |
| * the Java qualified name of a class to consider as a {@link ITableCellEditorFactory} |
| * @return a new instance of {@link ITableCellEditorFactory} (IllegalArgumentException is returned with cause if a |
| * {@link ITableCellEditorFactory} can not be returned) |
| * @throws IllegalArgumentException |
| * in case of the method can not get the {@link ITableCellEditorFactory} corresponding to the |
| * <code>qualifiedClassName</code>. |
| */ |
| public ITableCellEditorFactory instantiateCellEditorFactory(String qualifiedClassName) throws IllegalArgumentException { |
| Class<?> found = classLoading.findClass(viewpointProjects, viewpointPlugins, qualifiedClassName); |
| |
| if (found != null) { |
| Object instance = null; |
| try { |
| instance = found.newInstance(); |
| } catch (SecurityException | InstantiationException | IllegalAccessException | IllegalArgumentException e) { |
| // The class can not be instantiated, throw an global exception. |
| throw new IllegalArgumentException(MessageFormat.format(Messages.CelEditorFactoryManager_impossibleInstantiation, qualifiedClassName), e); |
| } |
| if (instance instanceof ITableCellEditorFactory) { |
| return (ITableCellEditorFactory) instance; |
| } else { |
| throw new IllegalArgumentException(MessageFormat.format(Messages.CelEditorFactoryManager_wrongImplementation, qualifiedClassName)); |
| } |
| } else { |
| throw new IllegalArgumentException(MessageFormat.format(Messages.CelEditorFactoryManager_notFound, qualifiedClassName)); |
| } |
| } |
| |
| /** |
| * Consider a list of odesign paths to update the scope as sent to the {@link IInterpreter} instances through the |
| * setProperty() method with IInterpreter.FILES key. |
| * |
| * @param value |
| * can be null, or a list of String each being the identifier of a project which can be in the workspace |
| * or not. |
| */ |
| public void updateScope(Collection<String> value) { |
| if (value != null) { |
| for (final String odesignPath : value) { |
| final URI workspaceCandidate = URI.createPlatformResourceURI(odesignPath, true); |
| final URI pluginCandidate = URI.createPlatformPluginURI(odesignPath, true); |
| if (existsInWorkspace(workspaceCandidate.toPlatformString(true))) { |
| viewpointProjects.add(workspaceCandidate.segment(1)); |
| } else if (existsInPlugins(URI.decode(pluginCandidate.toString()))) { |
| viewpointPlugins.add(pluginCandidate.segment(1)); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Checks whether the given path exists in the plugins. |
| * |
| * @param path |
| * The path we need to check. |
| * @return <code>true</code> if <em>path</em> denotes an existing plugin |
| * resource, <code>false</code> otherwise. |
| */ |
| private static boolean existsInPlugins(String path) { |
| try { |
| URL url = new URL(path); |
| return FileLocator.find(url) != null; |
| } catch (MalformedURLException e) { |
| return false; |
| } |
| } |
| |
| /** |
| * Checks whether the given path exists in the workspace. |
| * |
| * @param path |
| * The path we need to check. |
| * @return <code>true</code> if <em>path</em> denotes an existing workspace |
| * resource, <code>false</code> otherwise. |
| */ |
| private static boolean existsInWorkspace(String path) { |
| if (path == null || path.length() == 0 || EcorePlugin.getWorkspaceRoot() == null) { |
| return false; |
| } |
| return ResourcesPlugin.getWorkspace().getRoot().exists(new Path(path)); |
| } |
| } |