TypeFieldAssistDisposer.java :  » IDE-Eclipse » Eclipse-plug-in-development » org » eclipse » pde » internal » ui » editor » contentassist » Java Open Source

/*******************************************************************************
 * Copyright (c) 2006 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.pde.internal.ui.editor.contentassist;

import org.eclipse.jface.fieldassist.IContentProposalListener;
import org.eclipse.jface.fieldassist.IContentProposalListener2;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.ui.fieldassist.ContentAssistCommandAdapter;

/**
 * TypeFieldAssistDisposer
 *
 */
public class TypeFieldAssistDisposer {

  private ContentAssistCommandAdapter fAdapter;
  
  private TypeContentProposalListener fListener;
  
  /**
   * 
   */
  public TypeFieldAssistDisposer(ContentAssistCommandAdapter adapter,
      TypeContentProposalListener listener) {
    fAdapter = adapter;
    fListener = listener;
  }

  /**
   * 
   */
  public void dispose() {
    if (fAdapter == null) {
      return;
    }
    // Dispose of the label provider
    ILabelProvider labelProvider = fAdapter.getLabelProvider();
    if ((labelProvider != null)) {
      fAdapter.setLabelProvider(null);
      labelProvider.dispose();
    }
    // Remove the listeners
    if (fListener != null) {
      fAdapter.removeContentProposalListener(
          (IContentProposalListener) fListener);
      fAdapter.removeContentProposalListener(
          (IContentProposalListener2) fListener);
    }
  }
  
}