SetPropertyDetailValuesMap.java :  » IDE-Eclipse » core » org » eclipse » core » internal » databinding » property » Java Open Source

/*******************************************************************************
 * Copyright (c) 2008, 2009 Matthew Hall 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:
 *     Matthew Hall - initial API and implementation (bug 194734)
 *     Matthew Hall - bugs 195222, 278550
 ******************************************************************************/

package org.eclipse.core.internal.databinding.property;

import org.eclipse.core.databinding.observable.ObservableTracker;
import org.eclipse.core.databinding.observable.Realm;
import org.eclipse.core.databinding.observable.map.IObservableMap;
import org.eclipse.core.databinding.observable.set.IObservableSet;
import org.eclipse.core.databinding.observable.value.IObservableValue;
import org.eclipse.core.databinding.property.map.MapProperty;
import org.eclipse.core.databinding.property.set.ISetProperty;
import org.eclipse.core.databinding.property.value.IValueProperty;

/**
 * @since 3.3
 * 
 */
public class SetPropertyDetailValuesMap extends MapProperty {
  private final ISetProperty masterProperty;
  private final IValueProperty detailProperty;

  /**
   * @param masterProperty
   * @param detailProperty
   */
  public SetPropertyDetailValuesMap(ISetProperty masterProperty,
      IValueProperty detailProperty) {
    this.masterProperty = masterProperty;
    this.detailProperty = detailProperty;
  }

  public Object getKeyType() {
    return masterProperty.getElementType();
  }

  public Object getValueType() {
    return detailProperty.getValueType();
  }

  public IObservableMap observe(final Realm realm, final Object source) {
    final IObservableSet[] masterSet = new IObservableSet[1];

    ObservableTracker.runAndIgnore(new Runnable() {
      public void run() {
        masterSet[0] = masterProperty.observe(realm, source);
      }
    });

    IObservableMap detailMap = detailProperty.observeDetail(masterSet[0]);
    PropertyObservableUtil.cascadeDispose(detailMap, masterSet[0]);
    return detailMap;
  }

  public IObservableMap observeDetail(final IObservableValue master) {
    final IObservableSet[] masterSet = new IObservableSet[1];

    ObservableTracker.runAndIgnore(new Runnable() {
      public void run() {
        masterSet[0] = masterProperty.observeDetail(master);
      }
    });

    IObservableMap detailMap = detailProperty.observeDetail(masterSet[0]);
    PropertyObservableUtil.cascadeDispose(detailMap, masterSet[0]);
    return detailMap;
  }

  public String toString() {
    return masterProperty + " => " + detailProperty; //$NON-NLS-1$
  }
}