ArtifactSelectionService.java

/*******************************************************************************
 * Copyright (c) 2011 Bundlemaker project team.
 * 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:
 *     Bundlemaker project team - initial API and implementation
 ******************************************************************************/
package org.bundlemaker.core.selection.internal;

import java.util.Collection;
import java.util.LinkedList;
import java.util.Map.Entry;

import org.bundlemaker.core.analysis.IBundleMakerArtifact;
import org.bundlemaker.core.selection.IArtifactSelection;
import org.bundlemaker.core.selection.IArtifactSelectionListener;
import org.bundlemaker.core.selection.IArtifactSelectionService;
import org.eclipse.core.runtime.Assert;

/**
 * The selection service implementation
 * 
 * @author Nils Hartmann
 */
public class ArtifactSelectionService extends AbstractSelectionService<IArtifactSelection> implements
    IArtifactSelectionService {

  /** - */
  private SelectionListenerList<IArtifactSelectionListener, IArtifactSelection> _artifactSelectionListenerContainer = null;

  /** - */
  private boolean                                                               _useChildrenOfSelectedArtifacts     = true;

  public ArtifactSelectionService() {

    //
    _artifactSelectionListenerContainer = new SelectionListenerList<IArtifactSelectionListener, IArtifactSelection>() {
      @Override
      protected void invokeListener(IArtifactSelectionListener listener, IArtifactSelection event) {
        listener.artifactSelectionChanged(event);
      }
    };
  }

  /**
   * {@inheritDoc}
   */
  @Override
  public void setUseChildrenOfSelectedArtifacts(boolean useChildrenOfSelectedArtifacts) {

    //
    _useChildrenOfSelectedArtifacts = useChildrenOfSelectedArtifacts;

    //
    for (Entry<String, IArtifactSelection> entry : getCurrentSelections().entrySet()) {

      //
      IArtifactSelection oldArtifactSelection = entry.getValue();

      //
      setSelection(oldArtifactSelection.getSelectionId(), oldArtifactSelection.getProviderId(),
          oldArtifactSelection.getSelectedArtifacts());
    }
  }

  /**
   * {@inheritDoc}
   */
  @Override
  public boolean getUseChildrenOfSelectedArtifacts() {
    return _useChildrenOfSelectedArtifacts;
  }

  /**
   * {@inheritDoc}
   */
  @Override
  public void setSelection(String selectionId, String providerId, Collection<IBundleMakerArtifact> selectedArtifacts,
      boolean useChildrenOfSelectedArtifacts) {

    Assert.isNotNull(selectionId, "The parameter 'selectionId' must not be null");
    Assert.isNotNull(providerId, "The parameter 'providerId' must not be null");
    Assert.isNotNull(selectedArtifacts, "The parameter 'selectedArtifacts' must not be null");

    // create selection object for selected artifacts
    ArtifactSelection artifactSelection = new ArtifactSelection(selectionId, providerId,
        new LinkedList<IBundleMakerArtifact>(selectedArtifacts), useChildrenOfSelectedArtifacts);

    // set the selection
    setSelection(selectionId, providerId, artifactSelection);
  }

  /**
   * <p>
   * </p>
   * 
   * @param selectionId
   * @param providerId
   * @param selectedArtifacts
   */
  @Override
  public void setSelection(String selectionId, String providerId, Collection<IBundleMakerArtifact> selectedArtifacts) {
    setSelection(selectionId, providerId, selectedArtifacts, getUseChildrenOfSelectedArtifacts());
  }

  @Override
  public void addArtifactSelectionListener(String selectionId, IArtifactSelectionListener listener) {
    _artifactSelectionListenerContainer.addSelectionListener(selectionId, listener);
  }

  @Override
  public void removeArtifactSelectionListener(IArtifactSelectionListener listener) {
    _artifactSelectionListenerContainer.removeSelectionListener(listener);
  }

  /**
   * {@inheritDoc}
   */
  @Override
  protected boolean equals(IArtifactSelection newSelection, IArtifactSelection selection) {
    if (newSelection == null) {
      return false;
    }
    return newSelection.equals(selection);
  }

  @Override
  protected void fireSelectionChanged(String selectionId, String providerId, IArtifactSelection newSelection) {
    _artifactSelectionListenerContainer.fireSelectionChanged(selectionId, newSelection);
  }
}