| /******************************************************************************* |
| * Copyright (c) 2000, 2008 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v2.0 |
| * 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.wst.jsdt.ui.actions; |
| |
| import java.io.CharConversionException; |
| |
| import org.eclipse.jface.dialogs.MessageDialog; |
| import org.eclipse.jface.text.ITextSelection; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.ui.IWorkbenchSite; |
| import org.eclipse.ui.PlatformUI; |
| import org.eclipse.wst.jsdt.core.IJavaScriptUnit; |
| import org.eclipse.wst.jsdt.core.IType; |
| import org.eclipse.wst.jsdt.core.JavaScriptModelException; |
| import org.eclipse.wst.jsdt.internal.corext.refactoring.RefactoringAvailabilityTester; |
| import org.eclipse.wst.jsdt.internal.corext.refactoring.RefactoringExecutionStarter; |
| import org.eclipse.wst.jsdt.internal.corext.refactoring.util.JavaElementUtil; |
| import org.eclipse.wst.jsdt.internal.corext.util.JavaModelUtil; |
| import org.eclipse.wst.jsdt.internal.ui.IJavaHelpContextIds; |
| import org.eclipse.wst.jsdt.internal.ui.JavaScriptPlugin; |
| import org.eclipse.wst.jsdt.internal.ui.actions.ActionUtil; |
| import org.eclipse.wst.jsdt.internal.ui.actions.SelectionConverter; |
| import org.eclipse.wst.jsdt.internal.ui.javaeditor.JavaEditor; |
| import org.eclipse.wst.jsdt.internal.ui.javaeditor.JavaTextSelection; |
| import org.eclipse.wst.jsdt.internal.ui.refactoring.RefactoringMessages; |
| import org.eclipse.wst.jsdt.internal.ui.refactoring.actions.RefactoringActions; |
| import org.eclipse.wst.jsdt.internal.ui.util.ExceptionHandler; |
| |
| /** |
| * Tries to use a super type of a class where possible. |
| * |
| * <p> |
| * This class may be instantiated; it is not intended to be subclassed. |
| * </p> |
| * |
| * Provisional API: This class/interface is part of an interim API that is still under development and expected to |
| * change significantly before reaching stability. It is being made available at this early stage to solicit feedback |
| * from pioneering adopters on the understanding that any code that uses this API will almost certainly be broken |
| * (repeatedly) as the API evolves. |
| */ |
| public class UseSupertypeAction extends SelectionDispatchAction{ |
| |
| private JavaEditor fEditor; |
| |
| /** |
| * Note: This constructor is for internal use only. Clients should not call this constructor. |
| * @param editor the JavaScript editor |
| */ |
| public UseSupertypeAction(JavaEditor editor) { |
| this(editor.getEditorSite()); |
| fEditor= editor; |
| setEnabled(SelectionConverter.canOperateOn(fEditor)); |
| } |
| |
| /** |
| * Creates a new <code>UseSupertypeAction</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 UseSupertypeAction(IWorkbenchSite site) { |
| super(site); |
| setText(RefactoringMessages.UseSupertypeAction_use_Supertype); |
| PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.USE_SUPERTYPE_ACTION); |
| } |
| |
| //---- structured selection --------------------------------------------------- |
| |
| /* |
| * @see SelectionDispatchAction#selectionChanged(IStructuredSelection) |
| */ |
| public void selectionChanged(IStructuredSelection selection) { |
| try { |
| setEnabled(RefactoringAvailabilityTester.isUseSuperTypeAvailable(selection)); |
| } catch (JavaScriptModelException e) { |
| // http://bugs.eclipse.org/bugs/show_bug.cgi?id=19253 |
| if (!(e.getException() instanceof CharConversionException) && JavaModelUtil.isExceptionToBeLogged(e)) |
| JavaScriptPlugin.log(e); |
| setEnabled(false);// no UI - happens on selection changes |
| } |
| } |
| |
| /* |
| * @see SelectionDispatchAction#run(IStructuredSelection) |
| */ |
| public void run(IStructuredSelection selection) { |
| try { |
| if (RefactoringAvailabilityTester.isUseSuperTypeAvailable(selection)) { |
| IType singleSelectedType= getSingleSelectedType(selection); |
| if (! ActionUtil.isEditable(getShell(), singleSelectedType)) |
| return; |
| RefactoringExecutionStarter.startUseSupertypeRefactoring(singleSelectedType, getShell()); |
| } |
| } catch (JavaScriptModelException e) { |
| ExceptionHandler.handle(e, RefactoringMessages.OpenRefactoringWizardAction_refactoring, RefactoringMessages.OpenRefactoringWizardAction_exception); |
| } |
| } |
| |
| private static IType getSingleSelectedType(IStructuredSelection selection) throws JavaScriptModelException{ |
| if (selection.isEmpty() || selection.size() != 1) |
| return null; |
| |
| Object first= selection.getFirstElement(); |
| if (first instanceof IType) |
| return (IType)first; |
| if (first instanceof IJavaScriptUnit) |
| return JavaElementUtil.getMainType((IJavaScriptUnit)first); |
| return null; |
| } |
| |
| //---- text selection ------------------------------------------------------ |
| |
| /* |
| * @see SelectionDispatchAction#selectionChanged(ITextSelection) |
| */ |
| public void selectionChanged(ITextSelection selection) { |
| setEnabled(true); |
| } |
| |
| /** |
| * Note: This method is for internal use only. Clients should not call this method. |
| */ |
| public void selectionChanged(JavaTextSelection selection) { |
| try { |
| setEnabled(RefactoringAvailabilityTester.isUseSuperTypeAvailable(selection)); |
| } catch (JavaScriptModelException e) { |
| setEnabled(false); |
| } |
| } |
| |
| /* |
| * @see SelectionDispatchAction#run(ITextSelection) |
| */ |
| public void run(ITextSelection selection) { |
| try { |
| IType type= RefactoringActions.getEnclosingOrPrimaryType(fEditor); |
| if (RefactoringAvailabilityTester.isUseSuperTypeAvailable(type)) { |
| if (! ActionUtil.isEditable(fEditor, getShell(), type)) |
| return; |
| RefactoringExecutionStarter.startUseSupertypeRefactoring(type, getShell()); |
| } else { |
| MessageDialog.openInformation(getShell(), RefactoringMessages.OpenRefactoringWizardAction_unavailable, RefactoringMessages.UseSupertypeAction_to_activate); |
| } |
| } catch (JavaScriptModelException e) { |
| ExceptionHandler.handle(e, RefactoringMessages.OpenRefactoringWizardAction_refactoring, RefactoringMessages.OpenRefactoringWizardAction_exception); |
| } |
| } |
| } |