Examples of com.google.gwt.user.client.ui.AbsolutePanel

com.google.gwt.user.client.ui.AbsolutePanel
An absolute panel positions all of its children absolutely, allowing them to overlap.
Note that this panel will not automatically resize itself to allow enough room for its absolutely-positioned children. It must be explicitly sized in order to make room for them.

Once a widget has been added to an absolute panel, the panel effectively "owns" the positioning of the widget. Any existing positioning attributes on the widget may be modified by the panel.

  public Widget getContentWidget() {
    // Define the left layout:
    VerticalPanel leftLayout = new VerticalPanel();
    leftLayout.setSize("200px", "100%");
    leftLayout.add(new HTML("<h3>Layers:</h3>"));
    AbsolutePanel dndBoundary = new AbsolutePanel();
    dndBoundary.setSize("200px", "100%");
    leftLayout.add(dndBoundary);
    layerPanel = new VerticalPanel();
    dndBoundary.add(layerPanel);


    layerDragController = new PickupDragController(dndBoundary, false);
    layerDragController.setBehaviorMultipleSelection(false);
    layerDragController.registerDropController(new VerticalPanelDropController(layerPanel));
    layerDragController.addDragHandler(new LayerDragHandler());

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 * 
 */
public class SldEditorEntryPoint implements EntryPoint {


  public void onModuleLoad() {
    AbsolutePanel panel = new AbsolutePanel();
    panel.setSize("100%", "100%");
    // list of sld's
    final ListBox sldList = new ListBox();
    sldList.setVisibleItemCount(5);


    // label
    final Label nameLabel = new Label("<name of layer>");


    panel.add(sldList, 100, 100);
    panel.add(nameLabel, 100, 300);


    // Add it to the root panel.
    RootPanel.get().add(panel);


    final SldGwtServiceAsync service = GWT.create(SldGwtService.class);

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    return true;
  }


  protected void onAttach() {
    super.onAttach();
    AbsolutePanel parent;
    try {
      parent = (AbsolutePanel) getParent();
    } catch (RuntimeException e) {
      throw new IllegalStateException(
          "Parent widget must be an instance of AbsolutePanel");

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   */
  public PinnedPanel(int width, final ToggleButton pinnedToggle,
      Widget contents, Widget hoverBar) {


    // Create the composite widget.
    master = new AbsolutePanel() {
      {
        sinkEvents(Event.ONMOUSEOUT | Event.ONMOUSEOVER);
      }


      public void onBrowserEvent(Event event) {

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   */


  public CollapsiblePanel() {


    // Create the composite widget.
    master = new AbsolutePanel() {
      {
        sinkEvents(Event.ONMOUSEOUT | Event.ONMOUSEOVER);
      }


      @Override

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  public void onModuleLoad2() {
    RootPanel.get().add(
        new HTML("<code>$doc.compatMode = <b>" + getCompatMode()
            + "</b></code>"));


    redAbsolutePanel = new AbsolutePanel();
    redAbsolutePanel.setPixelSize(130, 130);
    RootPanel.get().add(redAbsolutePanel, 500, 150);
    redAbsolutePanel.add(new HTML("This red GlassPanel was created<br>"
        + "with <code>autoHide</code> set to <code>false</code>."));

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      movablePanel = newDragProxy(context);
      context.boundaryPanel.add(movablePanel, currentDraggableLocation.getLeft(),
          currentDraggableLocation.getTop());
    } else {
      saveSelectedWidgetsLocationAndStyle();
      AbsolutePanel container = new AbsolutePanel();
      DOM.setStyleAttribute(container.getElement(), "overflow", "visible");


      container.setPixelSize(context.draggable.getOffsetWidth(),
          context.draggable.getOffsetHeight());
      context.boundaryPanel.add(container, currentDraggableLocation.getLeft(),
          currentDraggableLocation.getTop());


      int draggableAbsoluteLeft = context.draggable.getAbsoluteLeft();
      int draggableAbsoluteTop = context.draggable.getAbsoluteTop();
      for (Iterator iterator = context.selectedWidgets.iterator(); iterator.hasNext();) {
        Widget widget = (Widget) iterator.next();
        if (widget != context.draggable) {
          int relativeX = widget.getAbsoluteLeft() - draggableAbsoluteLeft;
          int relativeY = widget.getAbsoluteTop() - draggableAbsoluteTop;
          container.add(widget, relativeX, relativeY);
        }
      }
      container.add(context.draggable, 0, 0);
      movablePanel = container;
    }
    movablePanel.addStyleName(PRIVATE_CSS_MOVABLE_PANEL);


    // one time calculation of boundary panel location for efficiency during dragging

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   * 
   * @param context the current drag context
   * @return a new drag proxy
   */
  protected Widget newDragProxy(DragContext context) {
    AbsolutePanel container = new AbsolutePanel();
    DOM.setStyleAttribute(container.getElement(), "overflow", "visible");


    WidgetArea draggableArea = new WidgetArea(context.draggable, null);
    for (Iterator iterator = context.selectedWidgets.iterator(); iterator.hasNext();) {
      Widget widget = (Widget) iterator.next();
      WidgetArea widgetArea = new WidgetArea(widget, null);
      Widget proxy = new SimplePanel();
      proxy.setPixelSize(widget.getOffsetWidth(), widget.getOffsetHeight());
      proxy.addStyleName(PRIVATE_CSS_PROXY);
      container.add(proxy, widgetArea.getLeft() - draggableArea.getLeft(), widgetArea.getTop()
          - draggableArea.getTop());
    }


    return container;
  }

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    RootPanel.get().add(
        new Label("Hit ESC or click anywhere on the glass panel to remove it."));
    RootPanel.get().add(new GlassPanel(true), 0, 0);


    // Create a small AbsolutePanel
    AbsolutePanel absolutePanel = new AbsolutePanel();
    absolutePanel.setPixelSize(100, 100);
    DOM.setStyleAttribute(absolutePanel.getElement(), "border",
        "1px solid black");
    absolutePanel.add(new Label(
        "This AbsolutePanel is covered with a semi-transparent green glass panel"));


    // Attach the AbsolutePanel
    RootPanel.get().add(absolutePanel, 50, 50);


    // Attach an absolute panel and style it green using this !important CSS
    // rule:
    // .green { background-color: green !important; }
    GlassPanel greenGlassPanel = new GlassPanel(false);
    greenGlassPanel.addStyleName("green");
    absolutePanel.add(greenGlassPanel, 0, 0);
  }

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        highercross = new HTML();
        highercross.setPixelSize(width / 2, height / 2);
        highercross.setStyleName(CLASSNAME_HIGHERBOX);


        container = new AbsolutePanel();
        container.setStyleName(CLASSNAME_CONTAINER);
        container.setPixelSize(width, height);
        container.add(background, 0, 0);
        container.add(foreground, 0, 0);
        container.add(lowercross, 0, height / 2);

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