| /******************************************************************************* |
| * Copyright (c) 2020 Red Hat Inc. 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 |
| *******************************************************************************/ |
| package org.eclipse.ui.internal.editors.text; |
| |
| import org.eclipse.swt.custom.BusyIndicator; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.swt.widgets.Shell; |
| |
| import org.eclipse.core.commands.AbstractHandler; |
| import org.eclipse.core.commands.ExecutionEvent; |
| import org.eclipse.core.commands.ExecutionException; |
| |
| import org.eclipse.core.runtime.Status; |
| |
| import org.eclipse.jface.text.ITextOperationTarget; |
| |
| import org.eclipse.ui.IWorkbench; |
| import org.eclipse.ui.IWorkbenchPage; |
| import org.eclipse.ui.IWorkbenchPart; |
| import org.eclipse.ui.IWorkbenchPartSite; |
| import org.eclipse.ui.IWorkbenchWindow; |
| import org.eclipse.ui.PlatformUI; |
| import org.eclipse.ui.handlers.HandlerUtil; |
| |
| /** |
| * Abstract Handler to delegate to an operation of {@link ITextOperationTarget}. |
| */ |
| public abstract class TextOperationActionHandler extends AbstractHandler { |
| |
| protected final int operationCode; |
| |
| public TextOperationActionHandler(int operationCode) { |
| this.operationCode= operationCode; |
| } |
| |
| @Override |
| public Object execute(ExecutionEvent event) throws ExecutionException { |
| if (operationCode < 0) { |
| return null; |
| } |
| IWorkbenchPart part= HandlerUtil.getActivePart(event); |
| ITextOperationTarget target= part.getAdapter(ITextOperationTarget.class); |
| if (target == null) { |
| return null; |
| } |
| |
| IWorkbenchPartSite site= part.getSite(); |
| Shell shell= site.getShell(); |
| if (shell != null && !shell.isDisposed()) { |
| Display display= shell.getDisplay(); |
| BusyIndicator.showWhile(display, () -> target.doOperation(operationCode)); |
| return Status.OK_STATUS; |
| } |
| return null; |
| } |
| |
| @Override |
| public void setEnabled(Object evaluationContext) { |
| IWorkbench workbench= PlatformUI.getWorkbench(); |
| if (workbench == null) { |
| setBaseEnabled(false); |
| return; |
| } |
| IWorkbenchWindow window= workbench.getActiveWorkbenchWindow(); |
| if (window == null) { |
| setBaseEnabled(false); |
| return; |
| } |
| IWorkbenchPage page= window.getActivePage(); |
| if (page == null) { |
| setBaseEnabled(false); |
| return; |
| } |
| IWorkbenchPart part= page.getActivePart(); |
| setBaseEnabled(part != null && part.getAdapter(ITextOperationTarget.class) != null); |
| } |
| } |