| /******************************************************************************* |
| * Copyright (c) 2007 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.ui.internal.services; |
| |
| import org.eclipse.core.expressions.Expression; |
| import org.eclipse.core.expressions.IEvaluationContext; |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.jface.util.IPropertyChangeListener; |
| import org.eclipse.ui.ISourceProvider; |
| import org.eclipse.ui.services.IEvaluationReference; |
| |
| /** |
| * @since 3.3 |
| * |
| */ |
| public final class EvaluationService implements IRestrictionService { |
| |
| private EvaluationAuthority evaluationAuthority; |
| |
| public EvaluationService() { |
| evaluationAuthority = new EvaluationAuthority(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.internal.services.IEvaluationService#addEvaluationListener(org.eclipse.core.expressions.Expression, |
| * org.eclipse.jface.util.IPropertyChangeListener, java.lang.String) |
| */ |
| public IEvaluationReference addEvaluationListener(Expression expression, |
| IPropertyChangeListener listener, String property) { |
| IEvaluationReference expressionReference = new EvaluationReference( |
| expression, listener, property); |
| |
| evaluationAuthority.addEvaluationListener(expressionReference); |
| return expressionReference; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.services.IEvaluationService#addEvaluationReference(org.eclipse.ui.services.IEvaluationReference) |
| */ |
| public void addEvaluationReference(IEvaluationReference ref) { |
| Assert.isLegal(ref instanceof EvaluationReference, "Invalid type: " //$NON-NLS-1$ |
| + ref.getClass().getName()); |
| evaluationAuthority.addEvaluationListener(ref); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.internal.services.IEvaluationService#removeEvaluationListener(org.eclipse.ui.internal.services.IEvaluationReference) |
| */ |
| public void removeEvaluationListener(IEvaluationReference ref) { |
| evaluationAuthority.removeEvaluationListener(ref); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.services.IServiceWithSources#addSourceProvider(org.eclipse.ui.ISourceProvider) |
| */ |
| public void addSourceProvider(ISourceProvider provider) { |
| evaluationAuthority.addSourceProvider(provider); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.services.IServiceWithSources#removeSourceProvider(org.eclipse.ui.ISourceProvider) |
| */ |
| public void removeSourceProvider(ISourceProvider provider) { |
| evaluationAuthority.removeSourceProvider(provider); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.services.IDisposable#dispose() |
| */ |
| public void dispose() { |
| evaluationAuthority.dispose(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.internal.services.IEvaluationService#getCurrentState() |
| */ |
| public IEvaluationContext getCurrentState() { |
| return evaluationAuthority.getCurrentState(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.internal.services.IEvaluationService#addServiceListener(org.eclipse.jface.util.IPropertyChangeListener) |
| */ |
| public void addServiceListener(IPropertyChangeListener listener) { |
| evaluationAuthority.addServiceListener(listener); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.internal.services.IEvaluationService#removeServiceListener(org.eclipse.jface.util.IPropertyChangeListener) |
| */ |
| public void removeServiceListener(IPropertyChangeListener listener) { |
| evaluationAuthority.removeServiceListener(listener); |
| } |
| } |