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GridDataSourceReset.java 1.9KB

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  1. /*
  2. * Copyright 2000-2016 Vaadin Ltd.
  3. *
  4. * Licensed under the Apache License, Version 2.0 (the "License"); you may not
  5. * use this file except in compliance with the License. You may obtain a copy of
  6. * the License at
  7. *
  8. * http://www.apache.org/licenses/LICENSE-2.0
  9. *
  10. * Unless required by applicable law or agreed to in writing, software
  11. * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  12. * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  13. * License for the specific language governing permissions and limitations under
  14. * the License.
  15. */
  16. package com.vaadin.tests.components.grid;
  17. import java.util.ArrayList;
  18. import java.util.List;
  19. import java.util.Random;
  20. import com.vaadin.data.provider.DataProvider;
  21. import com.vaadin.data.provider.ListDataProvider;
  22. import com.vaadin.server.VaadinRequest;
  23. import com.vaadin.tests.components.AbstractTestUI;
  24. import com.vaadin.tests.fieldgroup.ComplexPerson;
  25. import com.vaadin.ui.Button;
  26. import com.vaadin.ui.Grid;
  27. public class GridDataSourceReset extends AbstractTestUI {
  28. private List<ComplexPerson> persons;
  29. private Grid<ComplexPerson> grid;
  30. @Override
  31. protected void setup(VaadinRequest request) {
  32. persons = createPersons(10, new Random(1));
  33. grid = new Grid<>();
  34. ListDataProvider<ComplexPerson> provider = DataProvider
  35. .ofCollection(persons);
  36. grid.setDataProvider(provider);
  37. grid.getSelectionModel().select(persons.get(0));
  38. addComponent(new Button("Remove first", event -> {
  39. persons.remove(0);
  40. provider.refreshAll();
  41. grid.getSelectionModel().select(persons.get(0));
  42. }));
  43. addComponent(grid);
  44. }
  45. public static List<ComplexPerson> createPersons(int count, Random r) {
  46. List<ComplexPerson> c = new ArrayList<>();
  47. for (int i = 0; i < count; ++i) {
  48. c.add(ComplexPerson.create(r));
  49. }
  50. return c;
  51. }
  52. }