| /******************************************************************************* |
| * 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.refactoring.actions; |
| |
| import org.eclipse.jdt.core.IClassFile; |
| import org.eclipse.jdt.core.ICompilationUnit; |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.IType; |
| import org.eclipse.jdt.core.JavaModelException; |
| |
| import org.eclipse.jface.text.ITextSelection; |
| |
| import org.eclipse.jdt.internal.ui.actions.SelectionConverter; |
| import org.eclipse.jdt.internal.ui.javaeditor.JavaEditor; |
| import org.eclipse.jdt.internal.ui.javaeditor.JavaTextSelection; |
| |
| /** |
| * Helper class for refactoring actions |
| */ |
| public class RefactoringActions { |
| |
| /** |
| * Converts the given selection into a type using the following rules: |
| * <ul> |
| * <li>if the selection is enclosed by a type than that type is returned.</li> |
| * <li>if the selection is inside a compilaiton unit or class file than the |
| * primary type is returned.</li> |
| * <li>otherwise <code>null</code> is returned. |
| * </ul> |
| */ |
| public static IType getEnclosingOrPrimaryType(JavaTextSelection selection) throws JavaModelException { |
| return convertToEnclosingOrPrimaryType(selection.resolveEnclosingElement()); |
| } |
| public static IType getEnclosingOrPrimaryType(JavaEditor editor) throws JavaModelException { |
| return convertToEnclosingOrPrimaryType(SelectionConverter.resolveEnclosingElement( |
| editor, (ITextSelection)editor.getSelectionProvider().getSelection())); |
| } |
| |
| private static IType convertToEnclosingOrPrimaryType(IJavaElement element) throws JavaModelException { |
| if (element instanceof IType) |
| return (IType)element; |
| IType result= (IType)element.getAncestor(IJavaElement.TYPE); |
| if (result != null) |
| return result; |
| if (element instanceof ICompilationUnit) |
| return ((ICompilationUnit)element).findPrimaryType(); |
| if (element instanceof IClassFile) |
| return ((IClassFile)element).getType(); |
| return null; |
| } |
| |
| /** |
| * Converts the given selection into a type using the following rules: |
| * <ul> |
| * <li>if the selection is enclosed by a type than that type is returned.</li> |
| * <li>otherwise <code>null</code> is returned. |
| * </ul> |
| */ |
| public static IType getEnclosingType(JavaTextSelection selection) throws JavaModelException { |
| return convertToEnclosingType(selection.resolveEnclosingElement()); |
| } |
| public static IType getEnclosingType(JavaEditor editor) throws JavaModelException { |
| return convertToEnclosingType(SelectionConverter.resolveEnclosingElement( |
| editor, (ITextSelection)editor.getSelectionProvider().getSelection())); |
| } |
| |
| private static IType convertToEnclosingType(IJavaElement element) { |
| if (element == null) |
| return null; |
| if (! (element instanceof IType)) |
| element= element.getAncestor(IJavaElement.TYPE); |
| return (IType)element; |
| } |
| } |