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.refactoring;
  
  import org.eclipse.core.runtime.Assert;
  import org.eclipse.jface.viewers.CheckboxTableViewer;
  import org.eclipse.swt.widgets.Table;
  import org.eclipse.swt.widgets.TableItem;
  import org.eclipse.swt.widgets.Widget;
  import org.eclipse.wst.jsdt.internal.corext.refactoring.structure.IMemberActionInfo;
  
  class PullPushCheckboxTableViewer extends CheckboxTableViewer{
  	public PullPushCheckboxTableViewer(Table table) {
  		super(table);
  	}
  
  	/*
  	 * @see org.eclipse.jface.viewers.StructuredViewer#doUpdateItem(org.eclipse.swt.widgets.Widget, java.lang.Object, boolean)
  	 */
  	protected void doUpdateItem(Widget widget, Object element, boolean fullMap) {
  		super.doUpdateItem(widget, element, fullMap);
  		if (! (widget instanceof TableItem))
  			return;
  		TableItem item= (TableItem)widget;
  		IMemberActionInfo info= (IMemberActionInfo)element;
  		item.setChecked(PullPushCheckboxTableViewer.getCheckState(info));
  		Assert.isTrue(item.getChecked() == PullPushCheckboxTableViewer.getCheckState(info));
  	}
  
  	/*
  	 * @see org.eclipse.jface.viewers.Viewer#inputChanged(java.lang.Object, java.lang.Object)
  	 */
  	protected void inputChanged(Object input, Object oldInput) {
  		super.inputChanged(input, oldInput);
  		// XXX workaround for http://bugs.eclipse.org/bugs/show_bug.cgi?id=9390
  		setCheckState((IMemberActionInfo[])input);
  	}
  
  	private void setCheckState(IMemberActionInfo[] infos) {
  		if (infos == null)
  			return;
  		for (int i= 0; i < infos.length; i++) {
  			IMemberActionInfo info= infos[i];
  			setChecked(info, PullPushCheckboxTableViewer.getCheckState(info));
  		}	
  	}
  
  	private static boolean getCheckState(IMemberActionInfo info) {
  		return info.isActive();
  	}		
  	
  	/*
  	 * @see org.eclipse.jface.viewers.Viewer#refresh()
  	 */
  	public void refresh() {
  		int topIndex = getTable().getTopIndex();
  		super.refresh();
  		// XXX workaround for http://bugs.eclipse.org/bugs/show_bug.cgi?id=9390
  		setCheckState((IMemberActionInfo[])getInput());
  		if (topIndex < getTable().getItemCount())
  			getTable().setTopIndex(topIndex); //see bug 31645
  	}
  }
  