| /******************************************************************************* |
| * Copyright (c) 2000, 2003 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.ui.actions; |
| |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.Set; |
| |
| import org.eclipse.jface.dialogs.MessageDialog; |
| import org.eclipse.jface.text.ITextSelection; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.jface.viewers.StructuredSelection; |
| |
| import org.eclipse.ui.IWorkbenchSite; |
| import org.eclipse.ui.help.WorkbenchHelp; |
| |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.IMember; |
| import org.eclipse.jdt.core.JavaModelException; |
| |
| import org.eclipse.jdt.internal.ui.IJavaHelpContextIds; |
| import org.eclipse.jdt.internal.ui.JavaPlugin; |
| import org.eclipse.jdt.internal.ui.actions.ActionMessages; |
| import org.eclipse.jdt.internal.ui.actions.ActionUtil; |
| import org.eclipse.jdt.internal.ui.actions.SelectionConverter; |
| import org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor; |
| import org.eclipse.jdt.internal.ui.preferences.JavaPreferencesSettings; |
| import org.eclipse.jdt.internal.ui.refactoring.PullUpWizard; |
| import org.eclipse.jdt.internal.ui.refactoring.RefactoringMessages; |
| import org.eclipse.jdt.internal.ui.refactoring.RefactoringWizard; |
| import org.eclipse.jdt.internal.ui.refactoring.actions.RefactoringStarter; |
| import org.eclipse.jdt.internal.ui.util.ExceptionHandler; |
| |
| import org.eclipse.jdt.internal.corext.Assert; |
| import org.eclipse.jdt.internal.corext.refactoring.structure.PullUpRefactoring; |
| |
| /** |
| * Action to pull up method and fields into a superclass. |
| * <p> |
| * Action is applicable to selections containing elements of |
| * type <code>IField</code> and <code>IMethod</code> |
| * |
| * <p> |
| * This class may be instantiated; it is not intended to be subclassed. |
| * </p> |
| * |
| * @since 2.0 |
| */ |
| public class PullUpAction extends SelectionDispatchAction{ |
| |
| private CompilationUnitEditor fEditor; |
| |
| /** |
| * Creates a new <code>PullUpAction</code>. 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 site providing context information for this action |
| */ |
| public PullUpAction(IWorkbenchSite site) { |
| super(site); |
| setText(RefactoringMessages.getString("RefactoringGroup.pull_Up_label"));//$NON-NLS-1$ |
| WorkbenchHelp.setHelp(this, IJavaHelpContextIds.PULL_UP_ACTION); |
| } |
| |
| /** |
| * Note: This constructor is for internal use only. Clients should not call this constructor. |
| */ |
| public PullUpAction(CompilationUnitEditor editor) { |
| this(editor.getEditorSite()); |
| fEditor= editor; |
| setEnabled(SelectionConverter.canOperateOn(fEditor)); |
| } |
| |
| /* |
| * @see SelectionDispatchAction#selectionChanged(IStructuredSelection) |
| */ |
| public void selectionChanged(IStructuredSelection selection) { |
| try { |
| setEnabled(canEnable(getSelectedMembers(selection))); |
| } catch (JavaModelException e) { |
| setEnabled(false);//no ui |
| } |
| } |
| |
| /* |
| * @see org.eclipse.jdt.ui.actions.SelectionDispatchAction#selectionChanged(ITextSelection) |
| */ |
| public void selectionChanged(ITextSelection selection) { |
| //do nothing, this happens too often |
| } |
| |
| /* |
| * @see SelectionDispatchAction#run(IStructuredSelection) |
| */ |
| public void run(IStructuredSelection selection) { |
| try { |
| IMember[] members= getSelectedMembers(selection); |
| if (canEnable(members)) |
| startRefactoring(members); |
| } catch (JavaModelException e) { |
| ExceptionHandler.handle(e, RefactoringMessages.getString("OpenRefactoringWizardAction.refactoring"), RefactoringMessages.getString("OpenRefactoringWizardAction.exception")); //$NON-NLS-1$ //$NON-NLS-2$ |
| } |
| } |
| |
| /* |
| * @see org.eclipse.jdt.ui.actions.SelectionDispatchAction#run(ITextSelection) |
| */ |
| public void run(ITextSelection selection) { |
| try { |
| if (!ActionUtil.isProcessable(getShell(), fEditor)) |
| return; |
| IMember member= getSelectedMember(); |
| IMember[] array= new IMember[]{member}; |
| if (member != null && canEnable(array)){ |
| startRefactoring(array); |
| } else { |
| String unavailable= RefactoringMessages.getString("PullUpAction.unavailable"); //$NON-NLS-1$ |
| MessageDialog.openInformation(getShell(), RefactoringMessages.getString("OpenRefactoringWizardAction.unavailable"), unavailable); //$NON-NLS-1$ |
| } |
| } catch (JavaModelException e) { |
| ExceptionHandler.handle(e, RefactoringMessages.getString("OpenRefactoringWizardAction.refactoring"), RefactoringMessages.getString("OpenRefactoringWizardAction.exception")); //$NON-NLS-1$ //$NON-NLS-2$ |
| } |
| } |
| |
| private static IMember[] getSelectedMembers(IStructuredSelection selection){ |
| if (selection.isEmpty()) |
| return null; |
| |
| for (Iterator iter= selection.iterator(); iter.hasNext(); ) { |
| if (! (iter.next() instanceof IMember)) |
| return null; |
| } |
| return convertToMemberArray(selection.toArray()); |
| } |
| |
| private static boolean canEnable(IMember[] members) throws JavaModelException { |
| return PullUpRefactoring.isAvailable(members); |
| } |
| |
| private IMember getSelectedMember() throws JavaModelException{ |
| IJavaElement element= SelectionConverter.getElementAtOffset(fEditor); |
| if (element == null || ! (element instanceof IMember)) |
| return null; |
| return (IMember)element; |
| } |
| |
| private static PullUpRefactoring createNewRefactoringInstance(IMember[] members) throws JavaModelException{ |
| return PullUpRefactoring.create(members, JavaPreferencesSettings.getCodeGenerationSettings()); |
| } |
| |
| private static IMember[] convertToMemberArray(Object[] obj) { |
| if (obj == null) |
| return null; |
| Set memberSet= new HashSet(); |
| memberSet.addAll(Arrays.asList(obj)); |
| return (IMember[]) memberSet.toArray(new IMember[memberSet.size()]); |
| } |
| |
| private static RefactoringWizard createWizard(PullUpRefactoring refactoring){ |
| return new PullUpWizard(refactoring); |
| } |
| |
| private void startRefactoring(IMember[] members) throws JavaModelException { |
| PullUpRefactoring refactoring= createNewRefactoringInstance(members); |
| Assert.isNotNull(refactoring); |
| // Work around for http://dev.eclipse.org/bugs/show_bug.cgi?id=19104 |
| if (!ActionUtil.isProcessable(getShell(), refactoring.getDeclaringType())) |
| return; |
| |
| Object newElementToProcess= new RefactoringStarter().activate(refactoring, createWizard(refactoring), getShell(), RefactoringMessages.getString("OpenRefactoringWizardAction.refactoring"), true); //$NON-NLS-1$ |
| if (newElementToProcess == null) |
| return; |
| IStructuredSelection mockSelection= new StructuredSelection(newElementToProcess); |
| selectionChanged(mockSelection); |
| if (isEnabled()) |
| run(mockSelection); |
| else |
| MessageDialog.openInformation(JavaPlugin.getActiveWorkbenchShell(), ActionMessages.getString("PullUpAction.problem.title"), ActionMessages.getString("PullUpAction.problem.message")); //$NON-NLS-1$ //$NON-NLS-2$ |
| } |
| } |