| /******************************************************************************* |
| * 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.ui.actions; |
| |
| import org.eclipse.core.runtime.CoreException; |
| |
| |
| 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.IField; |
| import org.eclipse.jdt.core.IMember; |
| import org.eclipse.jdt.core.IMethod; |
| import org.eclipse.jdt.core.ISourceRange; |
| import org.eclipse.jdt.core.JavaModelException; |
| import org.eclipse.jdt.core.Signature; |
| import org.eclipse.jdt.core.dom.PrimitiveType; |
| |
| 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.internal.corext.util.JdtFlags; |
| |
| import org.eclipse.jdt.internal.ui.IJavaHelpContextIds; |
| import org.eclipse.jdt.internal.ui.JavaPlugin; |
| 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.javaeditor.JavaTextSelection; |
| import org.eclipse.jdt.internal.ui.refactoring.RefactoringMessages; |
| import org.eclipse.jdt.internal.ui.util.ExceptionHandler; |
| |
| /** |
| * Action to generalize the type of a local or field declaration or the |
| * return type of a method declaration. |
| * |
| * <p> |
| * This class may be instantiated; it is not intended to be subclassed. |
| * </p> |
| * |
| * @since 3.0 |
| */ |
| public class ChangeTypeAction extends SelectionDispatchAction { |
| private CompilationUnitEditor fEditor; |
| |
| /** |
| * Note: This constructor is for internal use only. Clients should not call |
| * this constructor. |
| * @param editor the compilation unit editor |
| */ |
| public ChangeTypeAction(CompilationUnitEditor editor) { |
| this(editor.getEditorSite()); |
| fEditor= editor; |
| setEnabled(SelectionConverter.getInputAsCompilationUnit(fEditor) != null); |
| } |
| |
| /** |
| * Creates a new <code>ChangeTypeAction</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 ChangeTypeAction(IWorkbenchSite site) { |
| super(site); |
| setText(RefactoringMessages.ChangeTypeAction_label); |
| setToolTipText(RefactoringMessages.ChangeTypeAction_tooltipText); |
| setDescription(RefactoringMessages.ChangeTypeAction_description); |
| PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.CHANGE_TYPE_ACTION); |
| } |
| |
| //---- structured selection --------------------------------------------- |
| |
| public void selectionChanged(IStructuredSelection selection) { |
| try { |
| setEnabled(RefactoringAvailabilityTester.isGeneralizeTypeAvailable(selection)); |
| } catch (JavaModelException e) { |
| if (JavaModelUtil.isExceptionToBeLogged(e)) |
| JavaPlugin.log(e); |
| setEnabled(false); |
| } |
| } |
| |
| public void run(IStructuredSelection selection) { |
| try { |
| IMember member= getMember(selection); |
| if (member == null || !ActionUtil.isProcessable(getShell(), member)) |
| return; |
| ISourceRange range= member.getNameRange(); |
| RefactoringExecutionStarter.startChangeTypeRefactoring(member.getCompilationUnit(), getShell(), range.getOffset(), range.getLength()); |
| } catch (CoreException e) { |
| ExceptionHandler.handle(e, RefactoringMessages.ChangeTypeAction_dialog_title, RefactoringMessages.ChangeTypeAction_exception); |
| } |
| } |
| |
| private static IMember getMember(IStructuredSelection selection) throws JavaModelException { |
| if (selection.size() != 1) |
| return null; |
| |
| Object element= selection.getFirstElement(); |
| if (!(element instanceof IMember)) |
| return null; |
| |
| if (element instanceof IMethod) { |
| IMethod method= (IMethod)element; |
| String returnType= method.getReturnType(); |
| if (PrimitiveType.toCode(Signature.toString(returnType)) != null) |
| return null; |
| return method; |
| } else if (element instanceof IField && !JdtFlags.isEnum((IMember) element)) { |
| return (IField)element; |
| } |
| return null; |
| } |
| |
| //---- text selection ------------------------------------------------------------ |
| |
| /* |
| * (non-Javadoc) Method declared on SelectionDispatchAction |
| */ |
| public void selectionChanged(ITextSelection selection) { |
| setEnabled(true); |
| } |
| |
| /** |
| * Note: This method is for internal use only. Clients should not call this method. |
| * @param selection the java text selection |
| */ |
| public void selectionChanged(JavaTextSelection selection) { |
| try { |
| setEnabled(RefactoringAvailabilityTester.isGeneralizeTypeAvailable(selection)); |
| } catch (JavaModelException e) { |
| setEnabled(false); |
| } |
| } |
| |
| /* |
| * (non-Javadoc) Method declared on SelectionDispatchAction |
| */ |
| public void run(ITextSelection selection) { |
| if (!ActionUtil.isProcessable(getShell(), fEditor)) |
| return; |
| try { |
| RefactoringExecutionStarter.startChangeTypeRefactoring(SelectionConverter.getInputAsCompilationUnit(fEditor), getShell(), selection.getOffset(), selection.getLength()); |
| } catch (CoreException e) { |
| ExceptionHandler.handle(e, RefactoringMessages.ChangeTypeAction_dialog_title, RefactoringMessages.ChangeTypeAction_exception); |
| } |
| } |
| } |