| /******************************************************************************* |
| * 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 |
| * |
| |
| *******************************************************************************/ |
| package org.eclipse.dltk.core.manipulation; |
| |
| import org.eclipse.core.runtime.CoreException; |
| 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.dltk.core.DLTKLanguageManager; |
| import org.eclipse.dltk.core.IModelElement; |
| import org.eclipse.dltk.internal.core.manipulation.ScriptManipulationPlugin; |
| |
| public class RefactoringEngineManager { |
| private static RefactoringEngineManager instance; |
| |
| protected IRefactoringEngine doFindRefactoringEngine(String natureId) |
| throws CoreException { |
| IExtensionRegistry reg = Platform.getExtensionRegistry(); |
| IExtensionPoint ep = reg |
| .getExtensionPoint(ManipulationConstants.REFACTORING_ENGINE_EP); |
| |
| IExtension[] extensions = ep.getExtensions(); |
| |
| for (int i = 0; i < extensions.length; i++) { |
| IExtension ext = extensions[i]; |
| IConfigurationElement[] ce = ext.getConfigurationElements(); |
| for (int j = 0; j < ce.length; j++) { |
| if (natureId |
| .equals(ce[j] |
| .getAttribute(ManipulationConstants.REFACTORING_ENGINE_NATURE_ID))) { |
| Object obj = ce[j] |
| .createExecutableExtension(ManipulationConstants.REFACTORING_ENGINE_CLASS); |
| if (obj instanceof IRefactoringEngine) |
| return (IRefactoringEngine) obj; |
| } |
| } |
| } |
| |
| return null; |
| } |
| |
| public static synchronized RefactoringEngineManager getInstance() { |
| if (instance == null) { |
| instance = new RefactoringEngineManager(); |
| } |
| |
| return instance; |
| } |
| |
| public IRefactoringEngine findRefactoringEngine(IModelElement element) { |
| try { |
| return doFindRefactoringEngine(DLTKLanguageManager.getLanguageToolkit(element).getNatureId()); |
| } catch (CoreException e) { |
| ScriptManipulationPlugin.log(e); |
| } |
| return null; |
| } |
| } |