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.viewsupport;
  
  import org.eclipse.jface.text.ITextSelection;
  import org.eclipse.ui.IEditorPart;
  import org.eclipse.wst.jsdt.core.dom.JavaScriptUnit;
  
  /**
   * Listener to be informed on text selection changes in an editor (post selection), including the corresponding AST.
   * The AST is shared and must not be modified.
   * Listeners can be registered in a <code>SelectionListenerWithASTManager</code>.
   */
  public interface ISelectionListenerWithAST {
  	
  	/**
  	 * Called when a selection has changed. The method is called in a post selection event in an background
  	 * thread.
  	 * 
  	 * @param part The editor part in which the selection change has occurred.
  	 * @param selection The new text selection
  	 * @param astRoot The AST tree corresponding to the editor's input. This AST is shared and must
  	 * not be modified.
  	 */
  	void selectionChanged(IEditorPart part, ITextSelection selection, JavaScriptUnit astRoot);
  
  }
  