Using_a_custom_DataProvider.java

/*******************************************************************************
 * Copyright (c) 2012 Original authors 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:
 *     Original authors and others - initial API and implementation
 ******************************************************************************/
package org.eclipse.nebula.widgets.nattable.examples.examples._101_Data;

import org.eclipse.nebula.widgets.nattable.NatTable;
import org.eclipse.nebula.widgets.nattable.data.IDataProvider;
import org.eclipse.nebula.widgets.nattable.examples.AbstractNatExample;
import org.eclipse.nebula.widgets.nattable.examples.runner.StandaloneNatExampleRunner;
import org.eclipse.nebula.widgets.nattable.layer.DataLayer;
import org.eclipse.nebula.widgets.nattable.layer.ILayer;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;

public class Using_a_custom_DataProvider extends AbstractNatExample {

    public static void main(String[] args) throws Exception {
        StandaloneNatExampleRunner.run(new Using_a_custom_DataProvider());
    }

    @Override
    public String getDescription() {
        return "One of the first things you will want to do is provide your own data for your NatTable instance. This is done by "
                + "implementing an IDataProvider and configuring your NatTable layer with it.\n"
                + "\n"
                + "This example shows a basic data layer that is backed by a custom data provider that names cells by column letter and "
                + "row number.";
    }

    @Override
    public Control createExampleControl(Composite parent) {
        IDataProvider myDataProvider = new IDataProvider() {

            @Override
            public int getColumnCount() {
                return 26;
            }

            @Override
            public int getRowCount() {
                return 10;
            }

            @Override
            public Object getDataValue(int columnIndex, int rowIndex) {
                String columnLetter = String
                        .valueOf((char) ('A' + columnIndex));
                String rowNumber = String.valueOf(rowIndex + 1);
                return columnLetter + rowNumber;
            }

            @Override
            public void setDataValue(int columnIndex, int rowIndex,
                    Object newValue) {
                // Do nothing
            }

        };

        ILayer layer = new DataLayer(myDataProvider);

        return new NatTable(parent, layer);
    }

}