| /******************************************************************************* |
| * Copyright (c) 2017 EclipseSource Services GmbH 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: |
| * Philip Langer - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.emf.compare.rcp.internal.preferences; |
| |
| import org.eclipse.core.expressions.PropertyTester; |
| import org.eclipse.core.runtime.Platform; |
| |
| /** |
| * A tester for values of properties. |
| * <p> |
| * This tester supports one property, named "preferenceValueEquals" (see |
| * {@link #PREFERENCE_VALUE_EQUALS}), which takes two arguments: |
| * </p> |
| * <ol> |
| * <li>The qualifier of the preference</li> |
| * <li>The preference key of the preference</li> |
| * </ol> |
| * |
| * @author Philip Langer <planger@eclipsesource.com> |
| */ |
| public class PreferencesPropertyTester extends PropertyTester { |
| |
| /** Property for testing whether a preference value equals the specified value. */ |
| private static final String PREFERENCE_VALUE_EQUALS = "preferenceValueEquals"; //$NON-NLS-1$ |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public boolean test(Object receiver, String property, Object[] args, Object expectedValue) { |
| if (PREFERENCE_VALUE_EQUALS.equals(property) && args.length == 2 && expectedValue != null) { |
| final String qualifier = args[0].toString(); |
| final String preferenceKey = args[1].toString(); |
| final String preferenceValue = Platform.getPreferencesService().getString(qualifier, |
| preferenceKey, null, null); |
| return expectedValue.toString().equals(preferenceValue); |
| } |
| return false; |
| } |
| |
| } |
