Package org.fusesource.ide.commons.ui.views

Source Code of org.fusesource.ide.commons.ui.views.ObservableLists

/*******************************************************************************
* Copyright (c) 2013 Red Hat, Inc.
* Distributed under license by Red Hat, Inc. All rights reserved.
* This program is 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:
*     Red Hat, Inc. - initial API and implementation
******************************************************************************/

package org.fusesource.ide.commons.ui.views;

import org.eclipse.core.databinding.observable.IChangeListener;
import org.eclipse.core.databinding.observable.list.IObservableList;

public class ObservableLists {

  public static void addListener(Object input, IChangeListener changeListener) {
    IObservableList observable = toObservableList(input);
    if (observable != null) {
      observable.addChangeListener(changeListener);
    }
  }

  public static void removeListener(Object input, IChangeListener changeListener) {
    IObservableList observable = toObservableList(input);
    if (observable != null) {
      observable.removeChangeListener(changeListener);
    }
  }

  public static IObservableList toObservableList(Object input) {
    IObservableList observable = null;
    if (input instanceof IObservableList) {
      observable = (IObservableList) input;
    }
    return observable;
  }

}
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