org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/actions/GenerateHashCodeEqualsAction.java - jdt/eclipse.jdt.ui - Git at Google

 /*******************************************************************************
  * Copyright (c) 2005, 2011 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
  *     Mateusz Matela <mateusz.matela@gmail.com> - [code manipulation] [dcr] toString() builder wizard - https://bugs.eclipse.org/bugs/show_bug.cgi?id=26070
  *******************************************************************************/
 package org.eclipse.jdt.ui.actions;

 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;

 import org.eclipse.swt.widgets.Shell;

 import org.eclipse.core.resources.IWorkspaceRunnable;

 import org.eclipse.ui.IWorkbenchSite;
 import org.eclipse.ui.PlatformUI;

 import org.eclipse.ltk.core.refactoring.RefactoringStatus;

 import org.eclipse.jdt.core.IJavaElement;
 import org.eclipse.jdt.core.IType;
 import org.eclipse.jdt.core.JavaModelException;
 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.core.dom.Modifier;

 import org.eclipse.jdt.internal.corext.codemanipulation.CodeGenerationSettings;
 import org.eclipse.jdt.internal.corext.codemanipulation.GenerateHashCodeEqualsOperation;
 import org.eclipse.jdt.internal.corext.dom.TypeRules;
 import org.eclipse.jdt.internal.corext.util.Messages;

 import org.eclipse.jdt.ui.JavaElementLabels;

 import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
 import org.eclipse.jdt.internal.ui.actions.ActionMessages;
 import org.eclipse.jdt.internal.ui.actions.SelectionConverter;
 import org.eclipse.jdt.internal.ui.dialogs.GenerateHashCodeEqualsDialog;
 import org.eclipse.jdt.internal.ui.dialogs.SourceActionDialog;
 import org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor;
 import org.eclipse.jdt.internal.ui.viewsupport.BasicElementLabels;
 import org.eclipse.jdt.internal.ui.viewsupport.BindingLabelProvider;

 /**
  * Adds method implementations for
  * <code>{@link java.lang.Object#equals(java.lang.Object)}</code> and
  * <code>{@link java.lang.Object#hashCode()}</code>. The action opens a
  * dialog from which the user can choose the fields to be considered.
  * <p>
  * Will open the parent compilation unit in a Java editor. The result is
  * unsaved, so the user can decide if the changes are acceptable.
  * <p>
  * The action is applicable to structured selections containing elements of type
  * {@link org.eclipse.jdt.core.IType}.
  *
  * <p>
  * This class may be instantiated; it is not intended to be subclassed.
  * </p>
  *
  * @since 3.2
  */
 public final class GenerateHashCodeEqualsAction extends GenerateMethodAbstractAction {

 	private static final String METHODNAME_HASH_CODE= "hashCode"; //$NON-NLS-1$
 	private static final String METHODNAME_EQUALS= "equals"; //$NON-NLS-1$

 	private class HashCodeEqualsInfo {

 		public boolean foundHashCode= false;

 		public boolean foundEquals= false;

 		public boolean foundFinalHashCode= false;

 		public boolean foundFinalEquals= false;
 	}

 	private class HashCodeEqualsGenerationSettings extends CodeGenerationSettings {
 		public boolean useInstanceOf= false;
 		public boolean useBlocks= false;
 	}

 	private List<IVariableBinding> allFields;
 	private List<IVariableBinding> selectedFields;

 	private ArrayList<ITypeBinding> alreadyCheckedMemberTypes;

 	/**
 	 * Note: This constructor is for internal use only. Clients should not call
 	 * this constructor.
 	 *
 	 * @param editor the compilation unit editor
 	 *
 	 * @noreference This constructor is not intended to be referenced by clients.
 	 */
 	public GenerateHashCodeEqualsAction(final CompilationUnitEditor editor) {
 		this(editor.getEditorSite());
 		fEditor= editor;
 		setEnabled( (fEditor != null && SelectionConverter.canOperateOn(fEditor)));
 	}

 	/**
 	 * Creates a new generate hashCode equals action.
 	 * <p>
 	 * The action requires that the selection provided by the site's selection
 	 * provider is of type
 	 * {@link org.eclipse.jface.viewers.IStructuredSelection}.
 	 *
 	 * @param site the workbench site providing context information for this
 	 *            action
 	 */
 	public GenerateHashCodeEqualsAction(final IWorkbenchSite site) {
 		super(site);
 		setText(ActionMessages.GenerateHashCodeEqualsAction_label);
 		setDescription(ActionMessages.GenerateHashCodeEqualsAction_description);
 		setToolTipText(ActionMessages.GenerateHashCodeEqualsAction_tooltip);
 		PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.GENERATE_HASHCODE_EQUALS_ACTION);
 	}

 	@Override
 	boolean isMethodAlreadyImplemented(ITypeBinding typeBinding) {
 		HashCodeEqualsInfo info= getTypeInfo(typeBinding, false);
 		return (info.foundEquals || info.foundHashCode);
 	}

 	private HashCodeEqualsInfo getTypeInfo(ITypeBinding someType, boolean checkSuperclasses) {
 		HashCodeEqualsInfo info= new HashCodeEqualsInfo();
 		if (someType.isTypeVariable()) {
 			someType= someType.getErasure();
 		}

 		while (true) {
 			IMethodBinding[] declaredMethods= someType.getDeclaredMethods();

 			for (int i= 0; i < declaredMethods.length; i++) {
 				if (declaredMethods[i].getName().equals(METHODNAME_EQUALS)) {
 					ITypeBinding[] b= declaredMethods[i].getParameterTypes();
 					if ((b.length == 1) && (b[0].getQualifiedName().equals("java.lang.Object"))) { //$NON-NLS-1$
 						info.foundEquals= true;
 						if (Modifier.isFinal(declaredMethods[i].getModifiers()))
 							info.foundFinalEquals= true;
 					}
 				}
 				if (declaredMethods[i].getName().equals(METHODNAME_HASH_CODE) && declaredMethods[i].getParameterTypes().length == 0) {
 					info.foundHashCode= true;
 					if (Modifier.isFinal(declaredMethods[i].getModifiers()))
 						info.foundFinalHashCode= true;
 				}
 				if (info.foundEquals && info.foundHashCode)
 					break;
 			}
 			if (checkSuperclasses) {
 				someType= someType.getSuperclass();
 				if (someType == null || TypeRules.isJavaLangObject(someType)) {
 					break;
 				}
 			} else {
 				break;
 			}
 		}

 		return info;
 	}

 	private RefactoringStatus checkHashCodeEqualsExists(ITypeBinding someType, boolean superClass) {

 		RefactoringStatus status= new RefactoringStatus();
 		HashCodeEqualsInfo info= getTypeInfo(someType, true);

 		String concreteTypeWarning= superClass ? ActionMessages.GenerateMethodAbstractAction_super_class : ActionMessages.GenerateHashCodeEqualsAction_field_type;
 		String concreteMethWarning= (someType.isInterface() || Modifier.isAbstract(someType.getModifiers()))
 				? ActionMessages.GenerateHashCodeEqualsAction_interface_does_not_declare_hashCode_equals_error
 				: ActionMessages.GenerateHashCodeEqualsAction_type_does_not_implement_hashCode_equals_error;
 		String concreteHCEWarning= null;

 		if (!info.foundEquals && (!info.foundHashCode))
 			concreteHCEWarning= ActionMessages.GenerateHashCodeEqualsAction_equals_and_hashCode;
 		else if (!info.foundEquals)
 			concreteHCEWarning= ActionMessages.GenerateHashCodeEqualsAction_equals;
 		else if (!info.foundHashCode)
 			concreteHCEWarning= ActionMessages.GenerateHashCodeEqualsAction_hashCode;

 		if (!info.foundEquals || !info.foundHashCode)
 			status.addWarning(Messages.format(concreteMethWarning, new String[] {
 					Messages.format(concreteTypeWarning, BindingLabelProvider.getBindingLabel(someType, JavaElementLabels.ALL_FULLY_QUALIFIED)), concreteHCEWarning }),
 					createRefactoringStatusContext(someType.getJavaElement()));

 		if (superClass && (info.foundFinalEquals || info.foundFinalHashCode)) {
 			status.addError(Messages.format(ActionMessages.GenerateMethodAbstractAction_final_method_in_superclass_error, new String[] {
 					Messages.format(concreteTypeWarning, BasicElementLabels.getJavaElementName(someType.getQualifiedName())), ActionMessages.GenerateHashCodeEqualsAction_hashcode_or_equals }),
 					createRefactoringStatusContext(someType.getJavaElement()));
 		}

 		return status;
 	}

 	@Override
 	CodeGenerationSettings createSettings(IType type, SourceActionDialog dialog) {
 		HashCodeEqualsGenerationSettings settings= new HashCodeEqualsGenerationSettings();
 		super.createSettings(type, dialog).setSettings(settings);
 		settings.createComments= dialog.getGenerateComment();
 		GenerateHashCodeEqualsDialog generateHashCodeEqualsDialog= (GenerateHashCodeEqualsDialog)dialog;
 		settings.useInstanceOf= generateHashCodeEqualsDialog.isUseInstanceOf();
 		settings.useBlocks= generateHashCodeEqualsDialog.isUseBlocks();
 		return settings;
 	}

 	@Override
 	void initialize(IType type) throws JavaModelException {
 		super.initialize(type);
 		alreadyCheckedMemberTypes= new ArrayList<ITypeBinding>();
 	}

 	@Override
 	String getAlreadyImplementedErrorMethodName() {
 		return ActionMessages.GenerateHashCodeEqualsAction_hashcode_or_equals;
 	}

 	@Override
 	boolean generateCandidates() {
 		IVariableBinding[] fCandidateFields= fTypeBinding.getDeclaredFields();

 		allFields= new ArrayList<IVariableBinding>();
 		selectedFields= new ArrayList<IVariableBinding>();
 		for (int i= 0; i < fCandidateFields.length; i++) {
 			if (!Modifier.isStatic(fCandidateFields[i].getModifiers())) {
 				allFields.add(fCandidateFields[i]);
 				if (!Modifier.isTransient(fCandidateFields[i].getModifiers()))
 					selectedFields.add(fCandidateFields[i]);
 			}
 		}
 		if (allFields.isEmpty()) {
 			return false;
 		}
 		return true;
 	}

 	@Override
 	SourceActionDialog createDialog(Shell shell, IType type) throws JavaModelException {
 		IVariableBinding[] allFieldBindings= allFields.toArray(new IVariableBinding[0]);
 		IVariableBinding[] selectedFieldBindings= selectedFields.toArray(new IVariableBinding[0]);
 		return new GenerateHashCodeEqualsDialog(shell, fEditor, type, allFieldBindings, selectedFieldBindings);
 	}

 	@Override
 	RefactoringStatus checkSuperClass(ITypeBinding superclass) {
 		return checkHashCodeEqualsExists(superclass, true);
 	}

 	@Override
 	RefactoringStatus checkGeneralConditions(IType type, CodeGenerationSettings settings, Object[] selected) {
 		return new RefactoringStatus();
 	}

 	@Override
 	RefactoringStatus checkMember(Object memberBinding) {
 		RefactoringStatus status= new RefactoringStatus();
 		IVariableBinding variableBinding= (IVariableBinding)memberBinding;
 		ITypeBinding fieldsType= variableBinding.getType();
 		if (fieldsType.isArray())
 			fieldsType= fieldsType.getElementType();
 		if (!fieldsType.isPrimitive() && !fieldsType.isEnum() && !alreadyCheckedMemberTypes.contains(fieldsType) && !fieldsType.equals(fTypeBinding)) {
 			status.merge(checkHashCodeEqualsExists(fieldsType, false));
 			alreadyCheckedMemberTypes.add(fieldsType);
 		}
 		if (Modifier.isTransient(variableBinding.getModifiers()))
 			status.addWarning(Messages.format(ActionMessages.GenerateHashCodeEqualsAction_transient_field_included_error, BasicElementLabels.getJavaElementName(variableBinding.getName())),
 					createRefactoringStatusContext(variableBinding.getJavaElement()));
 		return status;
 	}

 	@Override
 	IWorkspaceRunnable createOperation(Object[] selectedBindings, CodeGenerationSettings settings, boolean regenerate, IJavaElement type, IJavaElement elementPosition) {
 		final IVariableBinding[] selectedVariableBindings= Arrays.asList(selectedBindings).toArray(new IVariableBinding[0]);
 		HashCodeEqualsGenerationSettings hashCodeEqualsGenerationSettings= (HashCodeEqualsGenerationSettings)settings;
 		GenerateHashCodeEqualsOperation operation= new GenerateHashCodeEqualsOperation(fTypeBinding, selectedVariableBindings, fUnit, elementPosition, settings,
 				hashCodeEqualsGenerationSettings.useInstanceOf, regenerate, true, false);
 		operation.setUseBlocksForThen(hashCodeEqualsGenerationSettings.useBlocks);
 		return operation;
 	}

 	@Override
 	String getErrorCaption() {
 		return ActionMessages.GenerateHashCodeEqualsAction_error_caption;
 	}

 	@Override
 	String getNoMembersError() {
 		return ActionMessages.GenerateHashCodeEqualsAction_no_nonstatic_fields_error;
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2005, 2011 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
	* Mateusz Matela <mateusz.matela@gmail.com> - [code manipulation] [dcr] toString() builder wizard - https://bugs.eclipse.org/bugs/show_bug.cgi?id=26070
	*******************************************************************************/
	package org.eclipse.jdt.ui.actions;

	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.List;

	import org.eclipse.swt.widgets.Shell;

	import org.eclipse.core.resources.IWorkspaceRunnable;

	import org.eclipse.ui.IWorkbenchSite;
	import org.eclipse.ui.PlatformUI;

	import org.eclipse.ltk.core.refactoring.RefactoringStatus;

	import org.eclipse.jdt.core.IJavaElement;
	import org.eclipse.jdt.core.IType;
	import org.eclipse.jdt.core.JavaModelException;
	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.core.dom.Modifier;

	import org.eclipse.jdt.internal.corext.codemanipulation.CodeGenerationSettings;
	import org.eclipse.jdt.internal.corext.codemanipulation.GenerateHashCodeEqualsOperation;
	import org.eclipse.jdt.internal.corext.dom.TypeRules;
	import org.eclipse.jdt.internal.corext.util.Messages;

	import org.eclipse.jdt.ui.JavaElementLabels;

	import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
	import org.eclipse.jdt.internal.ui.actions.ActionMessages;
	import org.eclipse.jdt.internal.ui.actions.SelectionConverter;
	import org.eclipse.jdt.internal.ui.dialogs.GenerateHashCodeEqualsDialog;
	import org.eclipse.jdt.internal.ui.dialogs.SourceActionDialog;
	import org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor;
	import org.eclipse.jdt.internal.ui.viewsupport.BasicElementLabels;
	import org.eclipse.jdt.internal.ui.viewsupport.BindingLabelProvider;

	/**
	* Adds method implementations for
	* <code>{@link java.lang.Object#equals(java.lang.Object)}</code> and
	* <code>{@link java.lang.Object#hashCode()}</code>. The action opens a
	* dialog from which the user can choose the fields to be considered.
	* <p>
	* Will open the parent compilation unit in a Java editor. The result is
	* unsaved, so the user can decide if the changes are acceptable.
	* <p>
	* The action is applicable to structured selections containing elements of type
	* {@link org.eclipse.jdt.core.IType}.
	*
	* <p>
	* This class may be instantiated; it is not intended to be subclassed.
	* </p>
	*
	* @since 3.2
	*/
	public final class GenerateHashCodeEqualsAction extends GenerateMethodAbstractAction {

	private static final String METHODNAME_HASH_CODE= "hashCode"; //$NON-NLS-1$
	private static final String METHODNAME_EQUALS= "equals"; //$NON-NLS-1$

	private class HashCodeEqualsInfo {

	public boolean foundHashCode= false;

	public boolean foundEquals= false;

	public boolean foundFinalHashCode= false;

	public boolean foundFinalEquals= false;
	}

	private class HashCodeEqualsGenerationSettings extends CodeGenerationSettings {
	public boolean useInstanceOf= false;
	public boolean useBlocks= false;
	}

	private List<IVariableBinding> allFields;
	private List<IVariableBinding> selectedFields;

	private ArrayList<ITypeBinding> alreadyCheckedMemberTypes;

	/**
	* Note: This constructor is for internal use only. Clients should not call
	* this constructor.
	*
	* @param editor the compilation unit editor
	*
	* @noreference This constructor is not intended to be referenced by clients.
	*/
	public GenerateHashCodeEqualsAction(final CompilationUnitEditor editor) {
	this(editor.getEditorSite());
	fEditor= editor;
	setEnabled( (fEditor != null && SelectionConverter.canOperateOn(fEditor)));
	}

	/**
	* Creates a new generate hashCode equals action.
	* <p>
	* The action requires that the selection provided by the site's selection
	* provider is of type
	* {@link org.eclipse.jface.viewers.IStructuredSelection}.
	*
	* @param site the workbench site providing context information for this
	* action
	*/
	public GenerateHashCodeEqualsAction(final IWorkbenchSite site) {
	super(site);
	setText(ActionMessages.GenerateHashCodeEqualsAction_label);
	setDescription(ActionMessages.GenerateHashCodeEqualsAction_description);
	setToolTipText(ActionMessages.GenerateHashCodeEqualsAction_tooltip);
	PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.GENERATE_HASHCODE_EQUALS_ACTION);
	}

	@Override
	boolean isMethodAlreadyImplemented(ITypeBinding typeBinding) {
	HashCodeEqualsInfo info= getTypeInfo(typeBinding, false);
	return (info.foundEquals \|\| info.foundHashCode);
	}

	private HashCodeEqualsInfo getTypeInfo(ITypeBinding someType, boolean checkSuperclasses) {
	HashCodeEqualsInfo info= new HashCodeEqualsInfo();
	if (someType.isTypeVariable()) {
	someType= someType.getErasure();
	}

	while (true) {
	IMethodBinding[] declaredMethods= someType.getDeclaredMethods();

	for (int i= 0; i < declaredMethods.length; i++) {
	if (declaredMethods[i].getName().equals(METHODNAME_EQUALS)) {
	ITypeBinding[] b= declaredMethods[i].getParameterTypes();
	if ((b.length == 1) && (b[0].getQualifiedName().equals("java.lang.Object"))) { //$NON-NLS-1$
	info.foundEquals= true;
	if (Modifier.isFinal(declaredMethods[i].getModifiers()))
	info.foundFinalEquals= true;
	}
	}
	if (declaredMethods[i].getName().equals(METHODNAME_HASH_CODE) && declaredMethods[i].getParameterTypes().length == 0) {
	info.foundHashCode= true;
	if (Modifier.isFinal(declaredMethods[i].getModifiers()))
	info.foundFinalHashCode= true;
	}
	if (info.foundEquals && info.foundHashCode)
	break;
	}
	if (checkSuperclasses) {
	someType= someType.getSuperclass();
	if (someType == null \|\| TypeRules.isJavaLangObject(someType)) {
	break;
	}
	} else {
	break;
	}
	}

	return info;
	}

	private RefactoringStatus checkHashCodeEqualsExists(ITypeBinding someType, boolean superClass) {

	RefactoringStatus status= new RefactoringStatus();
	HashCodeEqualsInfo info= getTypeInfo(someType, true);

	String concreteTypeWarning= superClass ? ActionMessages.GenerateMethodAbstractAction_super_class : ActionMessages.GenerateHashCodeEqualsAction_field_type;
	String concreteMethWarning= (someType.isInterface() \|\| Modifier.isAbstract(someType.getModifiers()))
	? ActionMessages.GenerateHashCodeEqualsAction_interface_does_not_declare_hashCode_equals_error
	: ActionMessages.GenerateHashCodeEqualsAction_type_does_not_implement_hashCode_equals_error;
	String concreteHCEWarning= null;

	if (!info.foundEquals && (!info.foundHashCode))
	concreteHCEWarning= ActionMessages.GenerateHashCodeEqualsAction_equals_and_hashCode;
	else if (!info.foundEquals)
	concreteHCEWarning= ActionMessages.GenerateHashCodeEqualsAction_equals;
	else if (!info.foundHashCode)
	concreteHCEWarning= ActionMessages.GenerateHashCodeEqualsAction_hashCode;

	if (!info.foundEquals \|\| !info.foundHashCode)
	status.addWarning(Messages.format(concreteMethWarning, new String[] {
	Messages.format(concreteTypeWarning, BindingLabelProvider.getBindingLabel(someType, JavaElementLabels.ALL_FULLY_QUALIFIED)), concreteHCEWarning }),
	createRefactoringStatusContext(someType.getJavaElement()));

	if (superClass && (info.foundFinalEquals \|\| info.foundFinalHashCode)) {
	status.addError(Messages.format(ActionMessages.GenerateMethodAbstractAction_final_method_in_superclass_error, new String[] {
	Messages.format(concreteTypeWarning, BasicElementLabels.getJavaElementName(someType.getQualifiedName())), ActionMessages.GenerateHashCodeEqualsAction_hashcode_or_equals }),
	createRefactoringStatusContext(someType.getJavaElement()));
	}

	return status;
	}

	@Override
	CodeGenerationSettings createSettings(IType type, SourceActionDialog dialog) {
	HashCodeEqualsGenerationSettings settings= new HashCodeEqualsGenerationSettings();
	super.createSettings(type, dialog).setSettings(settings);
	settings.createComments= dialog.getGenerateComment();
	GenerateHashCodeEqualsDialog generateHashCodeEqualsDialog= (GenerateHashCodeEqualsDialog)dialog;
	settings.useInstanceOf= generateHashCodeEqualsDialog.isUseInstanceOf();
	settings.useBlocks= generateHashCodeEqualsDialog.isUseBlocks();
	return settings;
	}

	@Override
	void initialize(IType type) throws JavaModelException {
	super.initialize(type);
	alreadyCheckedMemberTypes= new ArrayList<ITypeBinding>();
	}

	@Override
	String getAlreadyImplementedErrorMethodName() {
	return ActionMessages.GenerateHashCodeEqualsAction_hashcode_or_equals;
	}

	@Override
	boolean generateCandidates() {
	IVariableBinding[] fCandidateFields= fTypeBinding.getDeclaredFields();

	allFields= new ArrayList<IVariableBinding>();
	selectedFields= new ArrayList<IVariableBinding>();
	for (int i= 0; i < fCandidateFields.length; i++) {
	if (!Modifier.isStatic(fCandidateFields[i].getModifiers())) {
	allFields.add(fCandidateFields[i]);
	if (!Modifier.isTransient(fCandidateFields[i].getModifiers()))
	selectedFields.add(fCandidateFields[i]);
	}
	}
	if (allFields.isEmpty()) {
	return false;
	}
	return true;
	}

	@Override
	SourceActionDialog createDialog(Shell shell, IType type) throws JavaModelException {
	IVariableBinding[] allFieldBindings= allFields.toArray(new IVariableBinding[0]);
	IVariableBinding[] selectedFieldBindings= selectedFields.toArray(new IVariableBinding[0]);
	return new GenerateHashCodeEqualsDialog(shell, fEditor, type, allFieldBindings, selectedFieldBindings);
	}

	@Override
	RefactoringStatus checkSuperClass(ITypeBinding superclass) {
	return checkHashCodeEqualsExists(superclass, true);
	}

	@Override
	RefactoringStatus checkGeneralConditions(IType type, CodeGenerationSettings settings, Object[] selected) {
	return new RefactoringStatus();
	}

	@Override
	RefactoringStatus checkMember(Object memberBinding) {
	RefactoringStatus status= new RefactoringStatus();
	IVariableBinding variableBinding= (IVariableBinding)memberBinding;
	ITypeBinding fieldsType= variableBinding.getType();
	if (fieldsType.isArray())
	fieldsType= fieldsType.getElementType();
	if (!fieldsType.isPrimitive() && !fieldsType.isEnum() && !alreadyCheckedMemberTypes.contains(fieldsType) && !fieldsType.equals(fTypeBinding)) {
	status.merge(checkHashCodeEqualsExists(fieldsType, false));
	alreadyCheckedMemberTypes.add(fieldsType);
	}
	if (Modifier.isTransient(variableBinding.getModifiers()))
	status.addWarning(Messages.format(ActionMessages.GenerateHashCodeEqualsAction_transient_field_included_error, BasicElementLabels.getJavaElementName(variableBinding.getName())),
	createRefactoringStatusContext(variableBinding.getJavaElement()));
	return status;
	}

	@Override
	IWorkspaceRunnable createOperation(Object[] selectedBindings, CodeGenerationSettings settings, boolean regenerate, IJavaElement type, IJavaElement elementPosition) {
	final IVariableBinding[] selectedVariableBindings= Arrays.asList(selectedBindings).toArray(new IVariableBinding[0]);
	HashCodeEqualsGenerationSettings hashCodeEqualsGenerationSettings= (HashCodeEqualsGenerationSettings)settings;
	GenerateHashCodeEqualsOperation operation= new GenerateHashCodeEqualsOperation(fTypeBinding, selectedVariableBindings, fUnit, elementPosition, settings,
	hashCodeEqualsGenerationSettings.useInstanceOf, regenerate, true, false);
	operation.setUseBlocksForThen(hashCodeEqualsGenerationSettings.useBlocks);
	return operation;
	}

	@Override
	String getErrorCaption() {
	return ActionMessages.GenerateHashCodeEqualsAction_error_caption;
	}

	@Override
	String getNoMembersError() {
	return ActionMessages.GenerateHashCodeEqualsAction_no_nonstatic_fields_error;
	}

	}