org.eclipse.nebula.widgets.nattable.examples/src/org/eclipse/nebula/widgets/nattable/examples/examples/_101_Data/Big_data.java

/*******************************************************************************
 * Copyright (c) 2012, 2020 Original authors and others.
 *
 * This program and the accompanying materials are made
 * available under the terms of the Eclipse Public License 2.0
 * which is available at https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * 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.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.stack.DummyGridLayerStack;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;

public class Big_data extends AbstractNatExample {

    public static void main(String[] args) throws Exception {
        StandaloneNatExampleRunner.run(800, 600, new Big_data());
    }

    @Override
    public String getDescription() {
        return "NatTable is designed to support very large data sets. This example shows a table with 500 columns and 1,000,000 rows. "
                + "NatTable tries hard to only ask for and render data that it currently needs to display.";
    }

    @Override
    public Control createExampleControl(Composite parent) {
        DummyGridLayerStack layer = new DummyGridLayerStack(500, 1000000);

        // Widen row header so that all the row numbers are visible
        DataLayer rowHeaderDataLayer = (DataLayer) layer
                .getRowHeaderDataLayer();
        rowHeaderDataLayer.setColumnWidthByPosition(0, 80);

        return new NatTable(parent, layer);
    }

}