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 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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   * added to the {@link RootPanel}.
   * @param w The target widget
   * @return Newly created {@link AbsolutePanel} added to the {@link RootPanel}.
   */
  public static AbsolutePanel getAbsoluteOverlay(Widget w) {
    final AbsolutePanel ap = new AbsolutePanel();
    ap.setPixelSize(w.getOffsetWidth(), w.getOffsetHeight());
    RootPanel.get().add(ap, w.getAbsoluteLeft(), w.getAbsoluteTop());
    return ap;
  }

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      context.boundaryPanel.add(movablePanel, currentDraggableLocation.getLeft(),
          currentDraggableLocation.getTop());
      checkGWTIssue1813(movablePanel, context.boundaryPanel);
    } else {
      saveSelectedWidgetsLocationAndStyle();
      AbsolutePanel container = new AbsolutePanel();
      container.getElement().getStyle().setProperty("overflow", "visible");


      container.setPixelSize(context.draggable.getOffsetWidth(),
          context.draggable.getOffsetHeight());
      context.boundaryPanel.add(container, currentDraggableLocation.getLeft(),
          currentDraggableLocation.getTop());
      checkGWTIssue1813(container, context.boundaryPanel);


      int draggableAbsoluteLeft = context.draggable.getAbsoluteLeft();
      int draggableAbsoluteTop = context.draggable.getAbsoluteTop();
      HashMap<Widget, CoordinateLocation> widgetLocation = new HashMap<Widget, CoordinateLocation>();
      for (Widget widget : context.selectedWidgets) {
        widgetLocation.put(widget, new CoordinateLocation(widget.getAbsoluteLeft(),
            widget.getAbsoluteTop()));
      }


      context.dropController = getIntersectDropController(context.mouseX, context.mouseY);
      if (context.dropController != null) {
        context.dropController.onEnter(context);
      }


      for (Widget widget : context.selectedWidgets) {
        Location location = widgetLocation.get(widget);
        int relativeX = location.getLeft() - draggableAbsoluteLeft;
        int relativeY = location.getTop() - draggableAbsoluteTop;
        container.add(widget, relativeX, relativeY);
      }
      movablePanel = container;
    }
    movablePanel.addStyleName(PRIVATE_CSS_MOVABLE_PANEL);
    calcBoundaryOffset();

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


    WidgetArea draggableArea = new WidgetArea(context.draggable, null);
    for (Widget widget : context.selectedWidgets) {
      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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   * @param widgets the list of widgets to display on the generated panel.
   * @param getDragTarget function for getting the 'dragable area' of any given widget. (Such as
   *                      a gripping area or header label.
   */
  public void setWidgets(List<T> widgets, Function<T, Widget> getDragTarget) {
    AbsolutePanel boundaryPanel = new AbsolutePanel();
    boundaryPanel.setSize("100%", "100%");
    boundaryPanel.clear();


    content.clear();
    content.add(boundaryPanel);


    // The VerticalPanel which actually holds the list of widgets.
    currentVerticalPanel = new VerticalPanel();


    // The VerticalPanelDropController handles DOM manipulation.
    final VerticalPanelDropController widgetDropController =
        new VerticalPanelDropController(currentVerticalPanel);


    boundaryPanel.add(currentVerticalPanel);
    DragHandler dragHandler = createDragHandler(currentVerticalPanel);


    PickupDragController widgetDragController = new PickupDragController(boundaryPanel, false);
    widgetDragController.setBehaviorMultipleSelection(false);
    widgetDragController.addDragHandler(dragHandler);

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        //Each Action is a row in a vertical panel
        final VerticalPanel actionsPanel = new VerticalPanel();


        //Wire-up DnD for Actions. All DnD related widgets must be contained in the AbsolutePanel
        AbsolutePanel actionsBoundaryPanel = new AbsolutePanel();
        PickupDragController actionsDragController = new PickupDragController( actionsBoundaryPanel,
                                                                               false );
        actionsDragController.setBehaviorConstrainedToBoundaryPanel( false );
        VerticalPanelDropController actionsDropController = new VerticalPanelDropController( actionsPanel );
        actionsDragController.registerDropController( actionsDropController );


        //Add DnD container to main Conditions container
        actionsBoundaryPanel.add( actionsPanel );
        this.actionsConfigWidget.add( actionsBoundaryPanel );


        //Add a DragHandler to handle the actions resulting from the drag operation
        actionsDragController.addDragHandler( new ActionDragHandler( actionsPanel,
                                                                     model,

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        //Each Pattern is a row in a vertical panel
        final VerticalPanel patternsPanel = new VerticalPanel();


        //Wire-up DnD for Patterns. All DnD related widgets must be contained in the AbsolutePanel
        AbsolutePanel patternsBoundaryPanel = new AbsolutePanel();
        PickupDragController patternsDragController = new PickupDragController( patternsBoundaryPanel,
                                                                                false );
        patternsDragController.setBehaviorConstrainedToBoundaryPanel( false );
        VerticalPanelDropController widgetDropController = new VerticalPanelDropController( patternsPanel );
        patternsDragController.registerDropController( widgetDropController );


        //Add DnD container to main Conditions container
        conditionsConfigWidget.add( patternsBoundaryPanel );
        patternsBoundaryPanel.add( patternsPanel );


        //Add a DragHandler to handle the actions resulting from the drag operation
        patternsDragController.addDragHandler( new PatternDragHandler( patternsPanel,
                                                                       model,
                                                                       dtable ) );


        List<CompositeColumn<? extends BaseColumn>> columns = model.getConditions();
        boolean arePatternsDraggable = columns.size() > 1 && !isReadOnly;
        for ( CompositeColumn<?> column : columns ) {
            if ( column instanceof Pattern52 ) {
                Pattern52 p = (Pattern52) column;
                VerticalPanel patternPanel = new VerticalPanel();
                VerticalPanel conditionsPanel = new VerticalPanel();
                HorizontalPanel patternHeaderPanel = new HorizontalPanel();
                patternHeaderPanel.setStylePrimaryName( GuidedDecisionTableResources.INSTANCE.css().patternSectionHeader() );
                Label patternLabel = makePatternLabel( p );
                patternHeaderPanel.add( patternLabel );
                patternPanel.add( patternHeaderPanel );
                patternsPanel.add( patternPanel );


                //Wire-up DnD for Conditions. All DnD related widgets must be contained in the AbsolutePanel
                AbsolutePanel conditionsBoundaryPanel = new AbsolutePanel();
                PickupDragController conditionsDragController = new PickupDragController( conditionsBoundaryPanel,
                                                                                          false );
                conditionsDragController.setBehaviorConstrainedToBoundaryPanel( false );
                VerticalPanelDropController conditionsDropController = new VerticalPanelDropController( conditionsPanel );
                conditionsDragController.registerDropController( conditionsDropController );


                //Add DnD container to main Conditions container
                conditionsBoundaryPanel.add( conditionsPanel );
                patternPanel.add( conditionsBoundaryPanel );


                //Add a DragHandler to handle the actions resulting from the drag operation
                conditionsDragController.addDragHandler( new ConditionDragHandler( conditionsPanel,
                                                                                   p,

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    }
  }


  @Override
  public Widget createIssue() {
    AbsolutePanel p = new AbsolutePanel();
    p.setHeight("500px");
    p.setWidth("500px");
    final TestWidget dialog = showTestWidget();
    p.add(dialog, 100, 100);
    return p;
  }

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    panelContent = new HorizontalPanel();
    panelContent.setStyleName("content");
    panelMain.add(panelContent);
    panelContent.setWidth("100%");
    
    panelMenuForumSpacing = new AbsolutePanel();
    panelContent.add(panelMenuForumSpacing);
    panelMenuForumSpacing.setWidth("50");
    
    panelForum = new VerticalPanel();
    panelForum.setStyleName("forum");
    panelContent.add(panelForum);
    panelForum.setWidth("100%");
    
    txtbxEcrireUnPost = new TextBox();
    txtbxEcrireUnPost.setText("�crire un post...");
    panelForum.add(txtbxEcrireUnPost);
    txtbxEcrireUnPost.setWidth("100%");
    
    panelPost1 = new VerticalPanel();
    panelForum.add(panelPost1);
    
    panelPost1Header = new HorizontalPanel();
    panelPost1.add(panelPost1Header);
    
    lblPost1Author = new Label("Pier-Luc Whissell");
    panelPost1Header.add(lblPost1Author);
    
    lblPost1Tag1 = new Label("tag1Ex");
    lblPost1Tag1.setStyleName("tag");
    panelPost1Header.add(lblPost1Tag1);
    
    lblPost1Text = new Label("post text");
    panelPost1.add(lblPost1Text);
    
    panelPost1Content = new HorizontalPanel();
    panelPost1.add(panelPost1Content);
    
    lblPost1Comment = new Label("Commenter");
    panelPost1Content.add(lblPost1Comment);
    
    imgPost1ThumbsUp = new Image("gwt/standard/images/splitPanelThumb.png");
    panelPost1Content.add(imgPost1ThumbsUp);
    
    imgPost1ThumbsDown = new Image("gwt/standard/images/splitPanelThumb.png");
    panelPost1Content.add(imgPost1ThumbsDown);
    
    lblPost1Flag = new Label("Signaler");
    panelPost1Content.add(lblPost1Flag);
    
    lblPost1Date = new Label("- 6 mars 2012");
    panelPost1Content.add(lblPost1Date);
    
    panelForumDocumentSpacing = new AbsolutePanel();
    panelContent.add(panelForumDocumentSpacing);
    panelForumDocumentSpacing.setWidth("50");
    
    panelDocument = new VerticalPanel();
    panelContent.add(panelDocument);

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//    addIconButton(BTN_REMOVE_NODE, panel, layoutData);
    return panel;
  }
  
  private final LayoutContainer createTreePanel(int width) {
    AbsolutePanel treePanel = new AbsolutePanel();
    treePanel.setPixelSize(width, 230);
    LayoutContainer lc = new LayoutContainer();
    lc.setSize(width, 230);
    lc.setScrollMode(Scroll.AUTOY);
    lc.setStyleAttribute("backgroundColor", "white");
    treePanel.add(lc);
    return lc;
  }

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