| /******************************************************************************* |
| * Copyright (c) 2006, 2011 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.ui.actions; |
| |
| import java.io.CharConversionException; |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.eclipse.jface.dialogs.MessageDialog; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| |
| import org.eclipse.jface.text.ITextSelection; |
| |
| import org.eclipse.ui.IWorkbenchSite; |
| import org.eclipse.ui.PlatformUI; |
| |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.IMember; |
| import org.eclipse.jdt.core.IType; |
| import org.eclipse.jdt.core.JavaModelException; |
| |
| import org.eclipse.jdt.internal.corext.refactoring.RefactoringAvailabilityTester; |
| import org.eclipse.jdt.internal.corext.refactoring.RefactoringExecutionStarter; |
| import org.eclipse.jdt.internal.corext.util.JavaModelUtil; |
| |
| import org.eclipse.jdt.ui.actions.SelectionDispatchAction; |
| |
| import org.eclipse.jdt.internal.ui.IJavaHelpContextIds; |
| import org.eclipse.jdt.internal.ui.JavaPlugin; |
| import org.eclipse.jdt.internal.ui.javaeditor.JavaEditor; |
| import org.eclipse.jdt.internal.ui.javaeditor.JavaTextSelection; |
| import org.eclipse.jdt.internal.ui.refactoring.RefactoringMessages; |
| import org.eclipse.jdt.internal.ui.util.ExceptionHandler; |
| |
| /** |
| * Action to extract a supertype from a class. |
| * <p> |
| * Action is applicable to selections containing elements of type |
| * <code>IType</code> (top-level types only), <code>IField</code> and |
| * <code>IMethod</code>. |
| * </p> |
| * <p> |
| * This class may be instantiated; it is not intended to be subclassed. |
| * </p> |
| * |
| * @since 3.2 |
| */ |
| public class ExtractSuperClassAction extends SelectionDispatchAction { |
| |
| /** |
| * Action definition ID of the refactor -> extract supertype action (value |
| * <code>"org.eclipse.jdt.ui.edit.text.java.extract.superclass"</code>). |
| * |
| * @since 3.2 |
| */ |
| public static final String EXTRACT_SUPERTYPE= "org.eclipse.jdt.ui.edit.text.java.extract.superclass"; //$NON-NLS-1$ |
| |
| /** |
| * Refactor menu: name of standard Extract Supertype global action (value |
| * <code>"org.eclipse.jdt.ui.actions.ExtractSuperclass"</code>). |
| * |
| * @since 3.2 |
| */ |
| public static final String EXTRACT_SUPERTYPES= "org.eclipse.jdt.ui.actions.ExtractSuperclass"; //$NON-NLS-1$ |
| |
| private static IMember[] getSelectedMembers(final IStructuredSelection selection) { |
| if (selection.isEmpty()) |
| return null; |
| if (selection.size() == 1) { |
| try { |
| final IType type= RefactoringAvailabilityTester.getSingleSelectedType(selection); |
| if (type != null) |
| return new IType[] {type}; |
| } catch (JavaModelException exception) { |
| JavaPlugin.log(exception); |
| } |
| } |
| for (Object name : selection) { |
| if (!(name instanceof IMember)) |
| return null; |
| } |
| final Set<IMember> set= new HashSet<>(); |
| @SuppressWarnings("unchecked") |
| List<IMember> selectionList= (List<IMember>) (List<?>) Arrays.asList(selection.toArray()); |
| set.addAll(selectionList); |
| return set.toArray(new IMember[set.size()]); |
| } |
| |
| /** The java editor */ |
| private JavaEditor fEditor; |
| |
| /** |
| * Note: This constructor is for internal use only. Clients should not call |
| * this constructor. |
| * |
| * @param editor |
| * the java editor |
| */ |
| public ExtractSuperClassAction(final JavaEditor editor) { |
| this(editor.getEditorSite()); |
| fEditor= editor; |
| setEnabled(SelectionConverter.canOperateOn(fEditor)); |
| } |
| |
| /** |
| * Creates a new extract super type action. The action requires that the |
| * selection provided by the site's selection provider is of type |
| * <code>org.eclipse.jface.viewers.IStructuredSelection</code>. |
| * |
| * @param site |
| * the workbench site |
| */ |
| public ExtractSuperClassAction(final IWorkbenchSite site) { |
| super(site); |
| setText(RefactoringMessages.ExtractSuperTypeAction_label); |
| PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.EXTRACT_SUPERTYPE_ACTION); |
| } |
| |
| private IMember getSelectedMemberFromEditor() throws JavaModelException { |
| final IJavaElement element= SelectionConverter.resolveEnclosingElement(fEditor, (ITextSelection) fEditor.getSelectionProvider().getSelection()); |
| if (element == null || !(element instanceof IMember)) |
| return null; |
| return (IMember) element; |
| } |
| |
| @Override |
| public void run(final IStructuredSelection selection) { |
| try { |
| final IMember[] members= getSelectedMembers(selection); |
| if (RefactoringAvailabilityTester.isExtractSupertypeAvailable(members) && ActionUtil.isEditable(getShell(), members[0])) |
| RefactoringExecutionStarter.startExtractSupertypeRefactoring(members, getShell()); |
| } catch (final JavaModelException exception) { |
| ExceptionHandler.handle(exception, RefactoringMessages.OpenRefactoringWizardAction_refactoring, RefactoringMessages.OpenRefactoringWizardAction_exception); |
| } |
| } |
| |
| @Override |
| public void run(final ITextSelection selection) { |
| try { |
| if (! ActionUtil.isEditable(fEditor)) |
| return; |
| final IMember member= getSelectedMemberFromEditor(); |
| final IMember[] array= new IMember[] { member}; |
| if (member != null && RefactoringAvailabilityTester.isExtractSupertypeAvailable(array)) { |
| RefactoringExecutionStarter.startExtractSupertypeRefactoring(array, getShell()); |
| } else { |
| MessageDialog.openInformation(getShell(), RefactoringMessages.OpenRefactoringWizardAction_unavailable, RefactoringMessages.ExtractSuperTypeAction_unavailable); |
| } |
| } catch (JavaModelException exception) { |
| ExceptionHandler.handle(exception, RefactoringMessages.OpenRefactoringWizardAction_refactoring, RefactoringMessages.OpenRefactoringWizardAction_exception); |
| } |
| } |
| |
| @Override |
| public void selectionChanged(final IStructuredSelection selection) { |
| try { |
| setEnabled(RefactoringAvailabilityTester.isExtractSupertypeAvailable(selection)); |
| } catch (JavaModelException exception) { |
| // http://bugs.eclipse.org/bugs/show_bug.cgi?id=19253 |
| if (!(exception.getException() instanceof CharConversionException) && JavaModelUtil.isExceptionToBeLogged(exception)) |
| JavaPlugin.log(exception); |
| setEnabled(false);//no UI - happens on selection changes |
| } |
| } |
| |
| @Override |
| public void selectionChanged(final ITextSelection selection) { |
| setEnabled(true); |
| } |
| |
| @Override |
| public void selectionChanged(final JavaTextSelection selection) { |
| try { |
| setEnabled(RefactoringAvailabilityTester.isExtractSupertypeAvailable(selection)); |
| } catch (JavaModelException event) { |
| setEnabled(false); |
| } |
| } |
| } |