| /******************************************************************************* |
| * Copyright (c) 2006, 2009 IBM Corporation 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 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.debug.internal.ui.commands.actions; |
| |
| |
| /** |
| * Collects votes from handler update requests. |
| * |
| * @since 3.3 |
| * |
| */ |
| public class ActionsUpdater { |
| |
| private IEnabledTarget[] fActions; |
| private int fNumVoters; |
| private int fNumOfVotes = 0; |
| private boolean fDone = false; |
| private boolean fEnabled = true; |
| |
| public ActionsUpdater(IEnabledTarget[] actions, int numVoters) { |
| fActions = actions; |
| fNumVoters = numVoters; |
| } |
| |
| public synchronized void setEnabled(boolean result) { |
| fNumOfVotes++; |
| if (fEnabled) { |
| fEnabled = result; |
| } |
| done(); |
| } |
| |
| private synchronized void done() { |
| if (!fDone) { |
| if (!fEnabled || fNumOfVotes == fNumVoters) { |
| fDone = true; |
| for (IEnabledTarget fAction : fActions) { |
| fAction.setEnabled(fEnabled); |
| } |
| } |
| } |
| } |
| |
| } |