content: /*******************************************************************************
   * Copyright (c) 2000, 2008 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.wst.jsdt.internal.ui.preferences;
  
  import org.eclipse.swt.widgets.Composite;
  import org.eclipse.swt.widgets.Control;
  
  
  /**
   * Interface for preference configuration blocks which can either be
   * wrapped by a {@link org.eclipse.wst.jsdt.internal.ui.preferences.AbstractConfigurationBlockPreferencePage}
   * or be included some preference page.
   * <p>
   * Clients may implement this interface.
   * </p>
   * 
   * 
   */
  public interface IPreferenceConfigurationBlock {
  	
  	/**
  	 * Creates the preference control.
  	 * 
  	 * @param parent the parent composite to which to add the preferences control
  	 * @return the control that was added to <code>parent</code> 
  	 */
  	Control createControl(Composite parent);
  	
  	/**
  	 * Called after creating the control. Implementations should load the 
  	 * preferences values and update the controls accordingly.
  	 */
  	void initialize();
  	
  	/**
  	 * Called when the <code>OK</code> button is pressed on the preference
  	 * page. Implementations should commit the configured preference settings
  	 * into their form of preference storage.
  	 */
  	void performOk();
  	
  	/**
  	 * Called when the <code>Defaults</code> button is pressed on the
  	 * preference page. Implementation should reset any preference settings to
  	 * their default values and adjust the controls accordingly.
  	 */
  	void performDefaults();
  	
  	/**
  	 * Called when the preference page is being disposed. Implementations should
  	 * free any resources they are holding on to.
  	 */
  	void dispose();
  }
  