Examples of org.eclipse.jface.viewers.TreePath

org.eclipse.jface.viewers.TreePath
A tree path denotes a model element in a tree viewer. Tree path objects have value semantics. A model element is represented by a path of elements in the tree from the root element to the leaf element.
Clients may instantiate this class. Not intended to be subclassed.
@since 3.2

  @Test
  public void getChildrenShouldReturnAnEmptyArrayIfAllChildrenAreFilteredOut() {
    Object[] original = {"1", "2", "3"};
    Object[] expected = {};


    TreePath parent = newPath();
    FilterableTreePathContentProvider provider = create(parent, original);
    provider.addFilter(Predicates.alwaysTrue()); // Filters everything


    assertThat(provider.getChildren(parent), equalTo(expected));
  }

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  @Test
  public void getChildrenShouldReturnFilteredChildrenWhenFiltering() {
    Object[] originalChildren = {Integer.valueOf(0), "string"};
    Object[] expectedChildren = {Integer.valueOf(0)};


    TreePath parent = newPath();
    FilterableTreePathContentProvider p = create(parent, originalChildren);
    p.addFilter(Predicates.instanceOf(String.class));


    assertThat(p.getChildren(parent), equalTo(expectedChildren));
  }

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    assertThat(p.getElements(input), equalTo(expectedElements));
  }


  @Test
  public void hasChildrenShouldReturnFalseIfAllChildrenAreFilteredOut() {
    TreePath parent = newPath();
    Object[] children = {Integer.valueOf(0), Long.valueOf(1l), "str"};
    FilterableTreePathContentProvider p = create(parent, children);
    p.addFilter(Predicates.instanceOf(Object.class));
    assertThat(p.hasChildren(newPath()), is(false));
  }

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    assertThat(create().hasChildren(null), is(false));
  }


  @Test
  public void hasChildrenShouldReturnTrueIfNotAllChildrenAreFilteredOut() {
    TreePath parent = newPath();
    Object[] children = {Integer.valueOf(0), "string"};
    FilterableTreePathContentProvider p = create(parent, children);
    p.addFilter(Predicates.instanceOf(String.class));
    assertThat(p.hasChildren(parent), is(true));
  }

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    assertThat(p.hasChildren(parent), is(true));
  }


  @Test
  public void hasChildrenShouldReturnTrueIfParentHasChildrenAndThereIsNoFilter() {
    TreePath parent = newPath();
    Object[] children = {Integer.valueOf(0)};
    FilterableTreePathContentProvider p = create(parent, children);
    assertThat(p.hasChildren(parent), is(true));
  }

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  /**
   * @return A {@link TreePath} containing the given segments.
   */
  private TreePath newPath(Object... segments) {
    return new TreePath(segments);
  }

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    new TreePathPatternFilter(null);
  }


  @Test
  public void shouldHideTheElementIfTheLabelOfTheElementDoesNotMatchTheFilterText() {
    TreePath path = new TreePath(new Object[]{"parent", "child"});


    ITreePathContentProvider contentProvider = mock(ITreePathContentProvider.class);
    given(contentProvider.getChildren(path.getParentPath()))
        .willReturn(new Object[]{path.getLastSegment()});
    given(contentProvider.getChildren(path))
        .willReturn(new Object[0]);
    given(contentProvider.getParents(path.getLastSegment()))
        .willReturn(new TreePath[]{path.getParentPath()});


    TreeViewer v = mock(TreeViewer.class);
    given(v.getContentProvider()).willReturn(contentProvider);


    filter.setPattern("not a match");
    assertThat(filter.isElementVisible(v, path.getLastSegment()), is(FALSE));
  }

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  @Test
  public void convertShouldReturnTheIntegerIfTheLastSegmentOfThePathIsAnInteger()
      throws Exception {
    Integer expectedInt = Integer.valueOf(19);
    TreePath path = new TreePath(new Object[]{"a", expectedInt});
    assertThat(converter.convert(path), equalTo(expectedInt.longValue()));
  }

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    assertThat(converter.convert(path), equalTo(expectedInt.longValue()));
  }


  @Test
  public void convertShouldReturn0IfTheIntegerIsNotTheLastSegmentOfThePath() {
    TreePath path = new TreePath(new Object[]{Integer.valueOf(19), "a"});
    assertThat(converter.convert(path), equalTo(0L));
  }

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    assertThat(converter.convert(path), equalTo(0L));
  }


  @Test
  public void convertShouldReturn0IfThePathDoesNotContainAnInteger() {
    TreePath path = new TreePath(new Object[]{"a", "1"});
    assertThat(converter.convert(path), is(0L));
  }

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