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.browsing;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import org.eclipse.swt.widgets.Composite;
  import org.eclipse.swt.widgets.Item;
  import org.eclipse.swt.widgets.Widget;
  import org.eclipse.wst.jsdt.core.IPackageFragment;
  import org.eclipse.wst.jsdt.internal.ui.viewsupport.ColoredViewersManager;
  import org.eclipse.wst.jsdt.internal.ui.viewsupport.ProblemTableViewer;
  
  /**
   * Special problem table viewer to handle logical packages.
   */
  class PackagesViewTableViewer extends ProblemTableViewer implements IPackagesViewViewer {
  
  	public PackagesViewTableViewer(Composite parent, int style) {
  		super(parent, style);
  		ColoredViewersManager.install(this);
  	}
  
  	public void mapElement(Object element, Widget item) {
  		if (element instanceof LogicalPackage && item instanceof Item) {
  			LogicalPackage cp= (LogicalPackage) element;
  			IPackageFragment[] fragments= cp.getFragments();
  			for (int i= 0; i < fragments.length; i++) {
  				IPackageFragment fragment= fragments[i];
  				fResourceToItemsMapper.addToMap(fragment, (Item)item);
  			}
  		}
  		super.mapElement(element, item);
  	}
  
  	public void unmapElement(Object element, Widget item) {
  		if (element instanceof LogicalPackage && item instanceof Item) {
  			LogicalPackage cp= (LogicalPackage) element;
  			IPackageFragment[] fragments= cp.getFragments();
  			for (int i= 0; i < fragments.length; i++) {
  				IPackageFragment fragment= fragments[i];
  				fResourceToItemsMapper.removeFromMap(fragment, (Item)item);
  			}
  		}
  		super.unmapElement(element, item);
  	}
  
  	/*
  	 * @see org.eclipse.jface.viewers.StructuredViewer#getFilteredChildren(java.
  	 * lang.Object)
  	 */
  	protected Object[] getFilteredChildren(Object parent) {
  
  		Object[] result= getRawChildren(parent);
  		List list= new ArrayList();
  		if (result != null) {
  			Object[] toBeFiltered= new Object[1];
  			for (int i= 0; i < result.length; i++) {
  				Object object= result[i];
  				if(object instanceof LogicalPackage) {
  					if(selectLogicalPackage((LogicalPackage)object))
  						list.add(object);
  				} else {
  					toBeFiltered[0]= object;
  					if (filter(toBeFiltered).length == 1)
  						list.add(object);
  				}
  			}
  		}
  		return list.toArray();
  	}
  
  	private boolean selectLogicalPackage(LogicalPackage logicalPackage) {
  		return filter(logicalPackage.getFragments()).length > 0;
  	}
  
  	// --------- see: IPackagesViewViewer ----------
  
  	public Widget doFindItem(Object element){
  		return super.doFindItem(element);
  	}
  
  	public Widget doFindInputItem(Object element){
  		return super.doFindInputItem(element);
  	}
  
  	public List getSelectionFromWidget(){
  		return super.getSelectionFromWidget();
  	}
  
  	public void doUpdateItem(Widget item, Object element, boolean fullMap){
  		super.doUpdateItem(item, element, fullMap);
  	}
  
  	public void internalRefresh(Object element){
  		super.internalRefresh(element);
  	}
  
  	public void setSelectionToWidget(List l, boolean reveal){
  		super.setSelectionToWidget(l, reveal);
  	}
  }
  