title: GWT composite dynamic height resize
body: <p>I Have a GWT Composite to which some other Composites are added dynamically.
  I want to make may Parent composite Resize to fit the height of all its child widgets automatically.
  i tried setting setHeight("100%") for Composite but this doesn’t work.
  any Idea how to accomplish this functionality?</p>
  
  <p>thanks.
  EDIT:</p>
  
  <pre><code>final DockLayoutPanel dockLayoutPanel = new DockLayoutPanel(Unit.EM);
      dockLayoutPanel.setStyleName("EntryPanel");
      dockLayoutPanel.setSize("142px", "72px");
      initWidget(dockLayoutPanel);
  
      final VerticalPanel panel = new VerticalPanel();
      panel.setSize("140px", "72px");
  
      chckbxExport = new CheckBox("Export");
      putField(CommonPresenter.CONSTANTS.EXPORT, chckbxExport);
  
      dateBox = new DateBox();
  
      dateBox.addValueChangeHandler(new ValueChangeHandler&lt;Date&gt;() {
          @Override
          public void onValueChange(final ValueChangeEvent&lt;Date&gt; event) {
              dateChanged = true;
          }
      });
  
      panel.add(dateBox);
  
      final ListBox visibility = new ListBox();
  
      final Label lblVisibility = new Label("Visibility:");
      LabeledWidget vis = new LabeledWidget(lblVisibility, visibility);
  
      for (int i = 0; i &lt; CommonPresenter.CONSTANTS.VISIBILITIES.length; i++) {
          visibility.addItem(CommonPresenter.CONSTANTS.VISIBILITIES[i]);
      }
  
      putField(CommonPresenter.CONSTANTS.VISIBILITY, visibility);
  
      panel.add(vis);
      panel.add(chckbxExport);
  
      dockLayoutPanel.add(panel);
  </code></pre>
  
  <p>UPDATE:
  Setting Composite width to fill all available Window horizontal space:</p>
  
  <pre><code> final int scrollBarWidth = 25;
  // editPanel.setHeight("180px");
  setWidth(Window.getClientWidth() - scrollBarWidth + "px");
  // editPanel.setStyleName("EditorPanel");
  
  Window.addResizeHandler(new ResizeHandler()
  {
    public void onResize(ResizeEvent event)
    {
      int width = event.getWidth();
      setWidth(width - scrollBarWidth + "px");
    }
  });
  </code></pre>