| /******************************************************************************* |
| * Copyright (c) 2000, 2013 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.core; |
| |
| import java.util.Iterator; |
| |
| import org.eclipse.jdt.core.ICompilationUnit; |
| import org.eclipse.jdt.core.IField; |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.IJavaModelStatus; |
| import org.eclipse.jdt.core.IJavaModelStatusConstants; |
| import org.eclipse.jdt.core.IType; |
| import org.eclipse.jdt.core.JavaModelException; |
| import org.eclipse.jdt.core.dom.ASTNode; |
| import org.eclipse.jdt.core.dom.FieldDeclaration; |
| import org.eclipse.jdt.core.dom.SimpleName; |
| import org.eclipse.jdt.core.dom.VariableDeclarationFragment; |
| import org.eclipse.jdt.core.dom.rewrite.ASTRewrite; |
| import org.eclipse.jdt.internal.core.util.Messages; |
| |
| /** |
| * <p>This operation creates a field declaration in a type. |
| * |
| * <p>Required Attributes:<ul> |
| * <li>Containing Type |
| * <li>The source code for the declaration. No verification of the source is |
| * performed. |
| * </ul> |
| */ |
| @SuppressWarnings("rawtypes") |
| public class CreateFieldOperation extends CreateTypeMemberOperation { |
| /** |
| * When executed, this operation will create a field with the given name |
| * in the given type with the specified source. |
| * |
| * <p>By default the new field is positioned after the last existing field |
| * declaration, or as the first member in the type if there are no |
| * field declarations. |
| */ |
| public CreateFieldOperation(IType parentElement, String source, boolean force) { |
| super(parentElement, source, force); |
| } |
| protected ASTNode generateElementAST(ASTRewrite rewriter, ICompilationUnit cu) throws JavaModelException { |
| ASTNode node = super.generateElementAST(rewriter, cu); |
| if (node.getNodeType() != ASTNode.FIELD_DECLARATION) |
| throw new JavaModelException(new JavaModelStatus(IJavaModelStatusConstants.INVALID_CONTENTS)); |
| return node; |
| } |
| /** |
| * @see CreateElementInCUOperation#generateResultHandle |
| */ |
| protected IJavaElement generateResultHandle() { |
| return getType().getField(getASTNodeName()); |
| } |
| /** |
| * @see CreateElementInCUOperation#getMainTaskName() |
| */ |
| public String getMainTaskName(){ |
| return Messages.operation_createFieldProgress; |
| } |
| private VariableDeclarationFragment getFragment(ASTNode node) { |
| Iterator fragments = ((FieldDeclaration) node).fragments().iterator(); |
| if (this.anchorElement != null) { |
| VariableDeclarationFragment fragment = null; |
| String fragmentName = this.anchorElement.getElementName(); |
| while (fragments.hasNext()) { |
| fragment = (VariableDeclarationFragment) fragments.next(); |
| if (fragment.getName().getIdentifier().equals(fragmentName)) { |
| return fragment; |
| } |
| } |
| return fragment; |
| } else { |
| return (VariableDeclarationFragment) fragments.next(); |
| } |
| } |
| /** |
| * By default the new field is positioned after the last existing field |
| * declaration, or as the first member in the type if there are no |
| * field declarations. |
| */ |
| protected void initializeDefaultPosition() { |
| IType parentElement = getType(); |
| try { |
| IField[] fields = parentElement.getFields(); |
| if (fields != null && fields.length > 0) { |
| final IField lastField = fields[fields.length - 1]; |
| if (parentElement.isEnum()) { |
| IField field = lastField; |
| if (!field.isEnumConstant()) { |
| createAfter(lastField); |
| } |
| } else { |
| createAfter(lastField); |
| } |
| } else { |
| IJavaElement[] elements = parentElement.getChildren(); |
| if (elements != null && elements.length > 0) { |
| createBefore(elements[0]); |
| } |
| } |
| } catch (JavaModelException e) { |
| // type doesn't exist: ignore |
| } |
| } |
| /** |
| * @see CreateTypeMemberOperation#verifyNameCollision |
| */ |
| protected IJavaModelStatus verifyNameCollision() { |
| if (this.createdNode != null) { |
| IType type= getType(); |
| String fieldName = getASTNodeName(); |
| if (type.getField(fieldName).exists()) { |
| return new JavaModelStatus( |
| IJavaModelStatusConstants.NAME_COLLISION, |
| Messages.bind(Messages.status_nameCollision, fieldName)); |
| } |
| } |
| return JavaModelStatus.VERIFIED_OK; |
| } |
| private String getASTNodeName() { |
| if (this.alteredName != null) return this.alteredName; |
| return getFragment(this.createdNode).getName().getIdentifier(); |
| } |
| protected SimpleName rename(ASTNode node, SimpleName newName) { |
| VariableDeclarationFragment fragment = getFragment(node); |
| SimpleName oldName = fragment.getName(); |
| fragment.setName(newName); |
| return oldName; |
| } |
| } |