Package org.apache.wicket.extensions.markup.html.repeater.data.table

Class NavigationToolbar

java.lang.Object
org.apache.wicket.Component
org.apache.wicket.MarkupContainer
org.apache.wicket.markup.html.WebMarkupContainer
org.apache.wicket.markup.html.panel.Panel
org.apache.wicket.extensions.markup.html.repeater.data.table.AbstractToolbar
org.apache.wicket.extensions.markup.html.repeater.data.table.NavigationToolbar
All Implemented Interfaces:
Serializable, Iterable<Component>, IEventSink, IEventSource, IFeedbackContributor, IConverterLocator, IMetadataContext<Serializable,Component>, IQueueRegion, IHeaderContributor, IRequestableComponent, IHierarchical<Component>, IClusterable
Direct Known Subclasses:
AjaxNavigationToolbar
public class NavigationToolbar extends AbstractToolbar
Toolbar that displays links used to navigate the pages of the datatable as well as a message about which rows are being displayed and their total number in the data table.
Author:
Igor Vaynberg (ivaynberg)
See Also:

  • Constructor Details

    • NavigationToolbar

      public NavigationToolbar(DataTable<?,?> table)
      Constructor
      Parameters:
      table - data table this toolbar will be attached to

  • Method Details

    • newPagingNavigator

      protected PagingNavigator newPagingNavigator(String navigatorId, DataTable<?,?> table)
      Factory method used to create the paging navigator that will be used by the datatable
      Parameters:
      navigatorId - component id the navigator should be created with
      table - dataview used by datatable
      Returns:
      paging navigator that will be used to navigate the data table

    • newNavigatorLabel

      protected Component newNavigatorLabel(String navigatorId, DataTable<?,?> table)
      Factory method used to create the navigator label.
      Parameters:
      navigatorId - component id navigator label should be created with
      table - DataTable used by datatable
      Returns:
      navigator label that will be used to navigate the data table

    • onConfigure

      protected void onConfigure()
      Called on all components before any component is rendered. This method should be used to configure such things as visibility and enabled flags.

      Overrides must call super.onConfigure(), usually before any other code

      NOTE: Component hierarchy should not be modified inside this method, instead it should be done in Component.onBeforeRender()

      NOTE: Why this method is preferrable to directly overriding Component.isVisible() and Component.isEnabled()? Because those methods are called multiple times even for processing of a single request. If they contain expensive logic they can slow down the response time of the entire page. Further, overriding those methods directly on form components may lead to inconsistent or unexpected state depending on when those methods are called in the form processing workflow. It is a better practice to push changes to state rather than pull.

      NOTE: If component's visibility or another property depends on another component you may call other.configure() followed by other.isVisible() as mentioned in Component.configure() javadoc.

      NOTE: Why should Component.onBeforeRender() not be used for this? Because if a component's visibility is controlled inside Component.onBeforeRender(), once invisible the component will never become visible again.

      Overrides:
      onConfigure in class Component