com.google.gwt.user.cellview.client.CellList Java Examples

/**
 * Creates the scrollable list of cells each of which serves as a link to a template.
 *
 * @param list an ArrayList of TemplateInfo
 * @return A CellList widget
 */
public CellList<TemplateInfo> makeTemplateSelector(ArrayList<TemplateInfo> list) {
  TemplateCell templateCell = new TemplateCell(list.get(0), templateHostUrl);

  CellList<TemplateInfo> templateCellList = new CellList<TemplateInfo>(templateCell,TemplateInfo.KEY_PROVIDER);
  templateCellList.setPageSize(list.size() + 10);
  templateCellList.setKeyboardSelectionPolicy(KeyboardSelectionPolicy.ENABLED);
  templateCellList.setWidth("250px");
  templateCellList.setHeight("355px");
  templateCellList.setVisible(true);
  templateCellList.getElement().getStyle().setOverflowY(Style.Overflow.SCROLL);

  // Add a selection model to handle user selection.
  final SingleSelectionModel<TemplateInfo> selectionModel =
    new SingleSelectionModel<TemplateInfo>(TemplateInfo.KEY_PROVIDER);
  templateCellList.setSelectionModel(selectionModel);
  selectionModel.setSelected(list.get(0), true);
  final TemplateUploadWizard wizard = this;
  selectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
      public void onSelectionChange(SelectionChangeEvent event) {
        TemplateInfo selected = selectionModel.getSelectedObject();
        if (selected != null) {
          selectedTemplateNAME = selected.name;
          TemplateWidget.setTemplate(selected, wizard.getTemplateUrlHost());
        }
      }
    });

  // Set the total row count. This isn't strictly necessary, but it affects
  // paging calculations, so its good habit to keep the row count up to date.
  templateCellList.setRowCount(list.size(), true);

  // Push the data into the widget.
  templateCellList.setRowData(0, list);
  return templateCellList;
}
 

@Test
public void shouldBeAbleToInstantiateCellLists() {
  assertNotNull(new CellList<String>(new AbstractCell<String>() {
    @Override
    public void render(Context context, String value, SafeHtmlBuilder sb) {}
  }));
}
 

/**
 * Returns a collection of classes whose non-abstract methods should always be replaced with
 * no-ops. By default, this list includes {@link Composite}, {@link DOM} {@link UIObject},
 * {@link Widget}, {@link Image}, and most subclasses of {@link Panel}. It will also include any
 * classes specified via the {@link WithClassesToStub} annotation on the test class. This makes
 * it much safer to test code that uses or extends these types.
 * <p>
 * This list can be customized via {@link WithClassesToStub} or by defining a new test runner
 * extending {@link GwtMockitoTestRunner} and overriding this method. This allows users to
 * explicitly stub out particular classes that are causing problems in tests. If you override this
 * method, you will probably want to retain the classes that are stubbed here by doing something
 * like this:
 *
 * <pre>
 * &#064;Override
 * protected Collection&lt;Class&lt;?&gt;&gt; getClassesToStub() {
 *   Collection&lt;Class&lt;?&gt;&gt; classes = super.getClassesToStub();
 *   classes.add(MyBaseWidget.class);
 *   return classes;
 * }
 * </pre>
 *
 * @return a collection of classes whose methods should be stubbed with no-ops while running tests
 */
protected Collection<Class<?>> getClassesToStub() {
  Collection<Class<?>> classes = new LinkedList<Class<?>>();
  classes.add(Composite.class);
  classes.add(DOM.class);
  classes.add(UIObject.class);
  classes.add(Widget.class);

  classes.add(DataGrid.class);
  classes.add(HTMLTable.class);
  classes.add(Image.class);

  classes.add(AbsolutePanel.class);
  classes.add(CellList.class);
  classes.add(CellPanel.class);
  classes.add(CellTable.class);
  classes.add(ComplexPanel.class);
  classes.add(DeckLayoutPanel.class);
  classes.add(DeckPanel.class);
  classes.add(DecoratorPanel.class);
  classes.add(DockLayoutPanel.class);
  classes.add(DockPanel.class);
  classes.add(FlowPanel.class);
  classes.add(FocusPanel.class);
  classes.add(HorizontalPanel.class);
  classes.add(HTMLPanel.class);
  classes.add(LayoutPanel.class);
  classes.add(Panel.class);
  classes.add(PopupPanel.class);
  classes.add(RenderablePanel.class);
  classes.add(ResizeLayoutPanel.class);
  classes.add(SimpleLayoutPanel.class);
  classes.add(SimplePanel.class);
  classes.add(SplitLayoutPanel.class);
  classes.add(StackPanel.class);
  classes.add(VerticalPanel.class);
  classes.add(ValueListBox.class);

  WithClassesToStub annotation = unitTestClass.getAnnotation(WithClassesToStub.class);
  if (annotation != null) {
    classes.addAll(Arrays.asList(annotation.value()));
  }

  return classes;
}
 

public ComboPicker(String cssSuffix) {

        cellList = new CellList<String>(new TextCell()
        {
            @Override
            public void render(Context context, String data, SafeHtmlBuilder sb) {
                String cssName = (context.getIndex() %2 > 0) ? "combobox-item combobox-item-odd" : "combobox-item";

                if(data.equals(displayed.getActual()))
                    cssName+=" combobox-item-selected";

                sb.append(TEMPLATE.item(cssName, data));
            }

        });

        cellList.setPageSize(100);

        final SingleSelectionModel<String> selectionModel = new SingleSelectionModel<String>();
        cellList.setSelectionModel(selectionModel);

        selectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
            public void onSelectionChange(SelectionChangeEvent event) {
                String selectedValue = selectionModel.getSelectedObject();

                setDisplayedValue(selectedValue);
                popup.hide();

                onSelection(selectedValue);
            }
        });

        final String panelId = "combopicker_popup";
        popup = new PopupPanel(true, true) {

            @Override
            protected void onPreviewNativeEvent(Event.NativePreviewEvent event) {
                if (Event.ONKEYUP == event.getTypeInt()) {
                    if (event.getNativeEvent().getKeyCode() == ESCAPE) {
                        // Dismiss when escape is pressed
                        popup.hide();
                    }
                }
            }

            public void onBrowserEvent(Event event) {
                super.onBrowserEvent(event);
            }
        };

        popup.getElement().setId(panelId);

        popup.setStyleName("default-popup");

        popup.addStyleName("triangle-border");
        popup.addStyleName("top-left");

        popup.setWidget(new ScrollPanel(cellList));

        displayed = new Display("");

        header = new HorizontalPanel();
        header.setStyleName("combobox"+cssSuffix);
        header.add(displayed);

        HTML icon = new HTML("<span style='font-size:12px;cursor:pointer'><i class='icon-chevron-down'></i></span>");
        header.add(icon);

        displayed.getElement().getParentElement().setAttribute("width", "100%");

        icon.getParent().getElement().setAttribute("width", "18");

        //header.getElement().setAttribute("width", "95%");
        header.getElement().setAttribute("cellspacing", "0");
        header.getElement().setAttribute("cellpadding", "0");
        header.getElement().setAttribute("border", "0");


        ClickHandler clickHandler = new ClickHandler() {
            @Override
            public void onClick(ClickEvent clickEvent) {
                openPanel();
            }
        };

        displayed.addClickHandler(clickHandler);
        icon.addClickHandler(clickHandler);

    }
 

@Override
public CellList.Style cellListStyle() {
    return new DefaultCellListStyle();
}
 

public CellList<Message> getMessageList() {
    return messageList;
}