content: /*******************************************************************************
   * Copyright (c) 2000, 2007 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.actions;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import org.eclipse.core.runtime.Assert;
  import org.eclipse.jface.action.Action;
  import org.eclipse.jface.viewers.StructuredViewer;
  import org.eclipse.jface.viewers.TableViewer;
  import org.eclipse.jface.viewers.TreeViewer;
  import org.eclipse.swt.widgets.Tree;
  import org.eclipse.swt.widgets.TreeItem;
  import org.eclipse.ui.PlatformUI;
  import org.eclipse.wst.jsdt.internal.ui.IJavaHelpContextIds;
   
  /**
   * This action selects all entries currently showing in view.
   */
  public class SelectAllAction extends Action {
  
  	private StructuredViewer fViewer;
  
  	/**
  	 * Creates the action for a TreeViewer
  	 */
  	public SelectAllAction(TreeViewer viewer) {
  		this((StructuredViewer) viewer);
  	}
  	
  	/**
  	 * Creates the action for a TableViewer
  	 */
  	public SelectAllAction(TableViewer viewer) {
  		this((StructuredViewer) viewer);
  	}
  
  	private SelectAllAction(StructuredViewer viewer) {
  		super("selectAll"); //$NON-NLS-1$
  		setText(ActionMessages.SelectAllAction_label); 
  		setToolTipText(ActionMessages.SelectAllAction_tooltip); 
  		PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.SELECT_ALL_ACTION);
  		Assert.isNotNull(viewer);
  		fViewer= viewer;
  	}
  	
  	private void collectExpandedAndVisible(TreeItem[] items, List result) {
  		for (int i= 0; i < items.length; i++) {
  			TreeItem item= items[i];
  			if (item.getData() != null) {
  				result.add(item);
  				if (item.getExpanded()) {
  					collectExpandedAndVisible(item.getItems(), result);
  				}
  			}
  		}
  	}
  
  	/**
  	 * Selects all resources in the view.
  	 */
  	public void run() {
  		if (fViewer instanceof TreeViewer) {
  			ArrayList allVisible= new ArrayList();
  			Tree tree= ((TreeViewer) fViewer).getTree();
  			collectExpandedAndVisible(tree.getItems(), allVisible);
  			tree.setSelection((TreeItem[]) allVisible.toArray(new TreeItem[allVisible.size()]));
  			fViewer.setSelection(fViewer.getSelection());
  		} else if (fViewer instanceof TableViewer) {
  			((TableViewer) fViewer).getTable().selectAll();
  			// force viewer selection change
  			fViewer.setSelection(fViewer.getSelection());
  		}
  	}
  }
  