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.typehierarchy;
  
  import org.eclipse.jface.action.Action;
  import org.eclipse.jface.dialogs.IDialogConstants;
  import org.eclipse.swt.widgets.Shell;
  import org.eclipse.ui.PlatformUI;
  import org.eclipse.wst.jsdt.core.IType;
  import org.eclipse.wst.jsdt.core.search.IJavaScriptSearchConstants;
  import org.eclipse.wst.jsdt.core.search.SearchEngine;
  import org.eclipse.wst.jsdt.internal.ui.IJavaHelpContextIds;
  import org.eclipse.wst.jsdt.internal.ui.dialogs.FilteredTypesSelectionDialog;
  import org.eclipse.wst.jsdt.ui.ITypeHierarchyViewPart;
  
  /**
   * Refocuses the type hierarchy on a type selection from a all types dialog.
   */
  public class FocusOnTypeAction extends Action {
  			
  	private ITypeHierarchyViewPart fViewPart;
  	
  	public FocusOnTypeAction(ITypeHierarchyViewPart part) {
  		super(TypeHierarchyMessages.FocusOnTypeAction_label); 
  		setDescription(TypeHierarchyMessages.FocusOnTypeAction_description); 
  		setToolTipText(TypeHierarchyMessages.FocusOnTypeAction_tooltip); 
  		
  		fViewPart= part;
  		PlatformUI.getWorkbench().getHelpSystem().setHelp(this,	IJavaHelpContextIds.FOCUS_ON_TYPE_ACTION);
  	}
  
  	/*
  	 * @see Action#run
  	 */
  	public void run() {
  		Shell parent= fViewPart.getSite().getShell();
  		FilteredTypesSelectionDialog dialog= new FilteredTypesSelectionDialog(parent, false, 
  			PlatformUI.getWorkbench().getProgressService(), 
  			SearchEngine.createWorkspaceScope(), IJavaScriptSearchConstants.TYPE);
  	
  		dialog.setTitle(TypeHierarchyMessages.FocusOnTypeAction_dialog_title); 
  		dialog.setMessage(TypeHierarchyMessages.FocusOnTypeAction_dialog_message); 
  		if (dialog.open() != IDialogConstants.OK_ID) {
  			return;
  		}
  		
  		Object[] types= dialog.getResult();
  		if (types != null && types.length > 0) {
  			IType type= (IType)types[0];
  			fViewPart.setInputElement(type);
  		}
  	}	
  }
  