plugins/org.eclipse.egf.pattern.ui/src/org/eclipse/egf/pattern/ui/editors/providers/TableObservableListContentProvider.java

/**
 * <copyright>
 *
 *  Copyright (c) 2009-2010 Thales Corporate Services S.A.S.
 *  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:
 *      Thales Corporate Services S.A.S - initial API and implementation
 * 
 * </copyright>
 */

package org.eclipse.egf.pattern.ui.editors.providers;

import org.eclipse.egf.pattern.ui.PatternUIHelper;
import org.eclipse.egf.pattern.ui.editors.adapter.RefresherAdapter;
import org.eclipse.emf.common.notify.impl.AdapterImpl;
import org.eclipse.jface.databinding.viewers.ObservableListContentProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.widgets.TableItem;

/**
 * @author XiaoRu Chen - Soyatec
 * 
 */
public class TableObservableListContentProvider extends ObservableListContentProvider {
    private TableViewer tableViewer;

    protected AdapterImpl refresher;

    public TableObservableListContentProvider(TableViewer tableViewer) {
        this.tableViewer = tableViewer;
        refresher = new RefresherAdapter(tableViewer);
        addDisposeListener();
    }

    private void addDisposeListener() {
        tableViewer.getTable().addDisposeListener(new DisposeListener() {

            public void widgetDisposed(DisposeEvent e) {
                TableItem[] items = tableViewer.getTable().getItems();
                for (TableItem item : items) {
                    Object object = item.getData();
                    PatternUIHelper.removeAdapter(object, refresher);
                }
            }
        });
    }

    public Object[] getElements(Object inputElement) {
        Object[] elements = super.getElements(inputElement);
        for (int i = 0; i < elements.length; i++) {
            PatternUIHelper.addAdapter(elements[i], refresher);
        }
        return elements;
    }
}