/*******************************************************************************
* Copyright (c) 2006, 2009 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.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 (int i = 0; i < fActions.length; i++) {
fActions[i].setEnabled(fEnabled);
}
}
}
}
}