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
   *     Alex Blewitt - Bug 133277 Allow Sort Members to be performed on package and project levels
   *******************************************************************************/
  package org.eclipse.wst.jsdt.internal.ui.actions;
  
  import java.util.Hashtable;
  
  import org.eclipse.jface.window.Window;
  import org.eclipse.ui.IWorkbenchSite;
  import org.eclipse.ui.PlatformUI;
  import org.eclipse.wst.jsdt.core.IJavaScriptUnit;
  import org.eclipse.wst.jsdt.core.IJavaScriptElement;
  import org.eclipse.wst.jsdt.core.IParent;
  import org.eclipse.wst.jsdt.core.JavaScriptModelException;
  import org.eclipse.wst.jsdt.internal.corext.fix.CleanUpConstants;
  import org.eclipse.wst.jsdt.internal.ui.IJavaHelpContextIds;
  import org.eclipse.wst.jsdt.internal.ui.JavaScriptPlugin;
  import org.eclipse.wst.jsdt.internal.ui.dialogs.SortMembersMessageDialog;
  import org.eclipse.wst.jsdt.internal.ui.fix.ICleanUp;
  import org.eclipse.wst.jsdt.internal.ui.fix.SortMembersCleanUp;
  import org.eclipse.wst.jsdt.internal.ui.javaeditor.JavaEditor;
  
  public class MultiSortMembersAction extends CleanUpAction {
  
  	public MultiSortMembersAction(IWorkbenchSite site) {
  		super(site);
  		
  		setText(ActionMessages.SortMembersAction_label); 
  		setDescription(ActionMessages.SortMembersAction_description); 
  		setToolTipText(ActionMessages.SortMembersAction_tooltip); 
  		
  		PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.SORT_MEMBERS_ACTION);
  	}
  
  	public MultiSortMembersAction(JavaEditor editor) {
  		super(editor);
  		
  		setText(ActionMessages.SortMembersAction_label); 
  		setDescription(ActionMessages.SortMembersAction_description); 
  		setToolTipText(ActionMessages.SortMembersAction_tooltip); 
  		
  		PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.SORT_MEMBERS_ACTION);
  	}
  
  	/**
  	 * {@inheritDoc}
  	 */
  	protected ICleanUp[] createCleanUps(IJavaScriptUnit[] units) {
  		try {
  	        if (!hasMembersToSort(units))
  	        	return null;
          } catch (JavaScriptModelException e) {
          	JavaScriptPlugin.log(e);
  	        return null;
          }
  
  		SortMembersMessageDialog dialog= new SortMembersMessageDialog(getShell());
  		if (dialog.open() != Window.OK)
  			return null;
  
  		Hashtable settings= new Hashtable();
  		settings.put(CleanUpConstants.SORT_MEMBERS, CleanUpConstants.TRUE);
  		settings.put(CleanUpConstants.SORT_MEMBERS_ALL, !dialog.isNotSortingFieldsEnabled() ? CleanUpConstants.TRUE : CleanUpConstants.FALSE);
  
  		return new ICleanUp[] {
  			new SortMembersCleanUp(settings)
  		};
  	}
  
  	/**
  	 * {@inheritDoc}
  	 */
  	protected String getActionName() {
  		return ActionMessages.SortMembersAction_dialog_title; 
  	}
  
  	private boolean hasMembersToSort(IJavaScriptUnit[] units) throws JavaScriptModelException {
  		for (int i= 0; i < units.length; i++) {
  			if (hasMembersToSort(units[i].getChildren()))
  				return true;
  		}
  
  		return false;
  	}
  
  	private boolean hasMembersToSort(IJavaScriptElement[] members) throws JavaScriptModelException {
  		if (members.length > 1)
  			return true;
  
  		if (members.length == 0)
  			return false;
  
  		IJavaScriptElement elem= members[0];
  		if (!(elem instanceof IParent))
  			return false;
  
  		return hasMembersToSort(((IParent)elem).getChildren());
  	}
  
  }
  