/*
 * Copyright 2000-2016 Vaadin Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.vaadin.v7.tests.components.grid;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;

import com.vaadin.server.VaadinRequest;
import com.vaadin.tests.components.AbstractReindeerTestUI;
import com.vaadin.tests.fieldgroup.ComplexPerson;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.Button.ClickListener;
import com.vaadin.v7.data.util.BeanItemContainer;
import com.vaadin.v7.ui.Grid;

public class GridDataSourceReset extends AbstractReindeerTestUI {

    BeanItemContainer<ComplexPerson> container;
    List<ComplexPerson> persons;
    Grid grid;

    @Override
    protected void setup(VaadinRequest request) {
        persons = createPersons(10, new Random(1));
        container = new BeanItemContainer<>(ComplexPerson.class, persons);

        grid = new Grid(container);
        grid.select(container.firstItemId());
        addComponent(new Button("Remove first", new ClickListener() {

            @Override
            public void buttonClick(ClickEvent event) {
                container.removeAllItems();
                persons.remove(0);

                container.addAll(persons);
                grid.select(container.firstItemId());
            }
        }));
        addComponent(grid);
    }

    public static List<ComplexPerson> createPersons(int count, Random r) {
        List<ComplexPerson> c = new ArrayList<>();
        for (int i = 0; i < count; ++i) {
            c.add(ComplexPerson.create(r));
        }
        return c;
    }
}