| /******************************************************************************* |
| * Copyright (c) 2004, 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 java.util.List; |
| |
| |
| |
| 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.jdt.core.IJavaElement; |
| 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.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; |
| |
| /** |
| * Infers type arguments for raw references to generic types. |
| * |
| * <p> |
| * This class may be instantiated; it is not intended to be subclassed. |
| * </p> |
| * |
| * @since 3.1 |
| */ |
| public class InferTypeArgumentsAction 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 InferTypeArgumentsAction(CompilationUnitEditor editor) { |
| this(editor.getEditorSite()); |
| fEditor= editor; |
| setEnabled(SelectionConverter.canOperateOn(fEditor)); |
| } |
| |
| /** |
| * Creates a new {@link InferTypeArgumentsAction}. 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 site providing context information for this action |
| */ |
| public InferTypeArgumentsAction(IWorkbenchSite site) { |
| super(site); |
| setText(RefactoringMessages.InferTypeArgumentsAction_label); |
| } |
| |
| /* |
| * @see SelectionDispatchAction#selectionChanged(ITextSelection) |
| */ |
| public void selectionChanged(ITextSelection selection) { |
| setEnabled(true); |
| } |
| |
| /* |
| * @see org.eclipse.jdt.ui.actions.SelectionDispatchAction#selectionChanged(org.eclipse.jdt.internal.ui.javaeditor.JavaTextSelection) |
| */ |
| public void selectionChanged(JavaTextSelection selection) { |
| if (selection.getLength() != 0) |
| setEnabled(false); |
| else |
| setEnabled(SelectionConverter.canOperateOn(fEditor)); |
| } |
| |
| /* |
| * @see org.eclipse.jdt.ui.actions.SelectionDispatchAction#selectionChanged(org.eclipse.jface.viewers.IStructuredSelection) |
| */ |
| public void selectionChanged(IStructuredSelection selection) { |
| try { |
| setEnabled(RefactoringAvailabilityTester.isInferTypeArgumentsAvailable(selection)); |
| } catch (JavaModelException e) { |
| // http://bugs.eclipse.org/bugs/show_bug.cgi?id=19253 |
| if (JavaModelUtil.isExceptionToBeLogged(e)) |
| JavaPlugin.log(e); |
| setEnabled(false);//no UI |
| } |
| } |
| |
| /* |
| * @see org.eclipse.jdt.ui.actions.SelectionDispatchAction#run(org.eclipse.jface.viewers.IStructuredSelection) |
| */ |
| public void run(IStructuredSelection selection) { |
| IJavaElement[] elements= getSelectedElements(selection); |
| try { |
| if (RefactoringAvailabilityTester.isInferTypeArgumentsAvailable(elements)) { |
| RefactoringExecutionStarter.startInferTypeArgumentsRefactoring(elements, getShell()); |
| } else { |
| MessageDialog.openInformation(getShell(), RefactoringMessages.OpenRefactoringWizardAction_unavailable, RefactoringMessages.InferTypeArgumentsAction_unavailable); |
| } |
| } catch (JavaModelException e) { |
| ExceptionHandler.handle(e, RefactoringMessages.OpenRefactoringWizardAction_refactoring, RefactoringMessages.OpenRefactoringWizardAction_exception); |
| } |
| } |
| |
| /* |
| * @see org.eclipse.jdt.ui.actions.SelectionDispatchAction#run(org.eclipse.jface.text.ITextSelection) |
| */ |
| public void run(ITextSelection selection) { |
| if (!ActionUtil.isProcessable(getShell(), fEditor)) |
| return; |
| IJavaElement element= SelectionConverter.getInput(fEditor); |
| IJavaElement[] array= new IJavaElement[] {element}; |
| try { |
| if (element != null && RefactoringAvailabilityTester.isInferTypeArgumentsAvailable(array)){ |
| RefactoringExecutionStarter.startInferTypeArgumentsRefactoring(array, getShell()); |
| } else { |
| MessageDialog.openInformation(getShell(), RefactoringMessages.OpenRefactoringWizardAction_unavailable, RefactoringMessages.InferTypeArgumentsAction_unavailable); |
| } |
| } catch (JavaModelException e) { |
| ExceptionHandler.handle(e, RefactoringMessages.OpenRefactoringWizardAction_refactoring, RefactoringMessages.OpenRefactoringWizardAction_exception); |
| } |
| } |
| |
| private static IJavaElement[] getSelectedElements(IStructuredSelection selection){ |
| List list= selection.toList(); |
| IJavaElement[] elements= new IJavaElement[list.size()]; |
| for (int i= 0; i < list.size(); i++) { |
| Object object= list.get(i); |
| if (object instanceof IJavaElement) |
| elements[i]= (IJavaElement) object; |
| else |
| return new IJavaElement[0]; |
| } |
| return elements; |
| } |
| } |