Get_and_set_selected_objects.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._120_Selection;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.nebula.widgets.nattable.NatTable;
import org.eclipse.nebula.widgets.nattable.data.IColumnPropertyAccessor;
import org.eclipse.nebula.widgets.nattable.data.IRowDataProvider;
import org.eclipse.nebula.widgets.nattable.data.ListDataProvider;
import org.eclipse.nebula.widgets.nattable.data.ReflectiveColumnPropertyAccessor;
import org.eclipse.nebula.widgets.nattable.examples.AbstractNatExample;
import org.eclipse.nebula.widgets.nattable.examples.runner.StandaloneNatExampleRunner;
import org.eclipse.nebula.widgets.nattable.grid.data.DefaultColumnHeaderDataProvider;
import org.eclipse.nebula.widgets.nattable.grid.layer.DefaultGridLayer;
import org.eclipse.nebula.widgets.nattable.selection.RowSelectionProvider;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;

public class Get_and_set_selected_objects extends AbstractNatExample {

    public static void main(String[] args) {
        StandaloneNatExampleRunner.run(400, 200,
                new Get_and_set_selected_objects());
    }

    @Override
    public String getDescription() {
        return "This example shows how to listen to row selection events in NatTable via the "
                + "JFace selection api. This is done via the RowSelectionProvider adapter class. "
                + "This example demonstrates the default RowSelectionProvider behavior, which is "
                + "to only report rows that are fully selected. The RowSelectionProvider can also "
                + "be configured to return any row that has a selected cell in it (see source code).";
    }

    @Override
    public Control createExampleControl(Composite parent) {
        Person homer = new Person("Homer", "Simpson", "Sargeant", 1234567890L);
        Person smithers = new Person("Waylon", "Smithers", "Admiral",
                6666666666L);
        Person bart = new Person("Bart", "Smithers", "General", 9125798342L);
        Person nelson = new Person("Nelson", "Muntz", "Private", 0000000001L);
        Person frink = new Person("John", "Frink", "Lieutenant", 3141592654L);

        List<Person> myList = new ArrayList<>();
        myList.add(homer);
        myList.add(smithers);
        myList.add(bart);
        myList.add(nelson);
        myList.add(frink);

        String[] propertyNames = { "firstName", "lastName", "rank",
                "serialNumber" };

        IColumnPropertyAccessor<Person> columnPropertyAccessor = new ReflectiveColumnPropertyAccessor<>(
                propertyNames);
        IRowDataProvider<Person> bodyDataProvider = new ListDataProvider<>(
                myList, columnPropertyAccessor);

        DefaultGridLayer gridLayer = new DefaultGridLayer(bodyDataProvider,
                new DefaultColumnHeaderDataProvider(propertyNames));

        NatTable natTable = new NatTable(parent, gridLayer);

        ISelectionProvider selectionProvider = new RowSelectionProvider<>(
                gridLayer.getBodyLayer().getSelectionLayer(), bodyDataProvider,
                false); // Provides rows where any cell in the row is selected

        selectionProvider
                .addSelectionChangedListener(new ISelectionChangedListener() {

                    @Override
                    public void selectionChanged(SelectionChangedEvent event) {
                        System.out.println("Selection changed:");

                        IStructuredSelection selection = (IStructuredSelection) event
                                .getSelection();
                        @SuppressWarnings("rawtypes")
                        Iterator it = selection.iterator();
                        while (it.hasNext()) {
                            System.out.println("  " + it.next());
                        }
                    }

                });

        // Programmatically select a few rows
        selectionProvider.setSelection(new StructuredSelection(new Person[] {
                homer, smithers, nelson }));

        // I changed my mind. Select a few other rows
        selectionProvider.setSelection(new StructuredSelection(new Person[] {
                bart, frink }));

        return natTable;
    }

    public class Person {
        private String firstName;
        private String lastName;
        private String rank;
        private long serialNumber;

        public Person(String firstName, String lastName, String rank,
                long serialNumber) {
            this.firstName = firstName;
            this.lastName = lastName;
            this.rank = rank;
            this.serialNumber = serialNumber;
        }

        public String getFirstName() {
            return this.firstName;
        }

        public String getLastName() {
            return this.lastName;
        }

        public String getRank() {
            return this.rank;
        }

        public long getSerialNumber() {
            return this.serialNumber;
        }

        @Override
        public String toString() {
            return this.firstName + " " + this.lastName + " " + this.rank + " " + this.serialNumber;
        }
    }

}