| /******************************************************************************* |
| * 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.actions; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.core.runtime.IStatus; |
| |
| import org.eclipse.ui.dialogs.ISelectionStatusValidator; |
| |
| import org.eclipse.jdt.core.dom.IMethodBinding; |
| import org.eclipse.jdt.core.dom.ITypeBinding; |
| import org.eclipse.jdt.core.dom.IVariableBinding; |
| |
| import org.eclipse.jdt.internal.corext.util.Messages; |
| |
| import org.eclipse.jdt.internal.ui.dialogs.StatusInfo; |
| |
| public class GenerateConstructorUsingFieldsValidator implements ISelectionStatusValidator { |
| |
| private GenerateConstructorUsingFieldsSelectionDialog fDialog; |
| |
| private final int fEntries; |
| |
| private List fSignatures; |
| |
| private ITypeBinding fType= null; |
| |
| public GenerateConstructorUsingFieldsValidator(GenerateConstructorUsingFieldsSelectionDialog dialog, ITypeBinding type, int entries) { |
| fEntries= entries; |
| fDialog= dialog; |
| fType= type; |
| fSignatures= getExistingConstructorSignatures(); |
| } |
| |
| public GenerateConstructorUsingFieldsValidator(int entries) { |
| fEntries= entries; |
| fType= null; |
| } |
| |
| private int countSelectedFields(Object[] selection) { |
| int count= 0; |
| for (int index= 0; index < selection.length; index++) { |
| if (selection[index] instanceof IVariableBinding) |
| count++; |
| } |
| return count; |
| } |
| |
| private void createSignature(final IMethodBinding constructor, StringBuffer buffer, Object[] selection) { |
| ITypeBinding types[]= constructor.getParameterTypes(); |
| for (int index= 0; index < types.length; index++) |
| buffer.append(types[index].getName()); |
| if (selection != null) { |
| for (int index= 0; index < selection.length; index++) |
| if (selection[index] instanceof IVariableBinding) |
| buffer.append(((IVariableBinding) selection[index]).getType().getErasure().getName()); |
| } |
| } |
| |
| private List getExistingConstructorSignatures() { |
| List existing= new ArrayList(); |
| IMethodBinding[] methods= fType.getDeclaredMethods(); |
| for (int index= 0; index < methods.length; index++) { |
| if (methods[index].isConstructor()) { |
| StringBuffer buffer= new StringBuffer(); |
| createSignature(methods[index], buffer, null); |
| existing.add(buffer.toString()); |
| } |
| } |
| return existing; |
| } |
| |
| public IStatus validate(Object[] selection) { |
| StringBuffer buffer= new StringBuffer(); |
| final IMethodBinding constructor= fDialog.getSuperConstructorChoice(); |
| createSignature(constructor, buffer, selection); |
| if (fSignatures.contains(buffer.toString())) |
| return new StatusInfo(IStatus.WARNING, ActionMessages.GenerateConstructorUsingFieldsAction_error_duplicate_constructor); |
| return new StatusInfo(IStatus.INFO, Messages.format(ActionMessages.GenerateConstructorUsingFieldsAction_fields_selected, new Object[] { String.valueOf(countSelectedFields(selection)), String.valueOf(fEntries)})); |
| } |
| } |