Examples of org.apache.wicket.markup.html.navigation.paging.PagingNavigation

Package org.apache.wicket.markup.html.navigation.paging

Examples of org.apache.wicket.markup.html.navigation.paging.PagingNavigation

org.apache.wicket.markup.html.navigation.paging.PagingNavigation
A navigation for a PageableListView that holds links to other pages of the PageableListView.
For each row (one page of the list of pages) a {@link PagingNavigationLink}will be added that contains a {@link Label} with the page number of that link (1..n).
```
 <td wicket:id="navigation"> <a wicket:id="pageLink" href="SearchCDPage.html"> 1 </a> </td> 
```
thus renders like:
```
 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 
```
Override method populateItem to customize the rendering of the navigation. For instance:
```
 protected void populateItem(LoopItem loopItem) { final int page = loopItem.getIteration(); final PagingNavigationLink link = new PagingNavigationLink("pageLink", pageableListView, page); if (page > 0) { loopItem.add(new Label("separator", "|")); } else { loopItem.add(new Label("separator", "")); } link.add(new Label("pageNumber", String.valueOf(page + 1))); link.add(new Label("pageLabel", "page")); loopItem.add(link); } 
```
With:
```
 <a wicket:id="pageLink" href="#"> </a> 
```
renders like:
```
 page1 | page2 | page3 | page4 | page5 | page6 | page7 | page8 | page9 
```
Assuming a PageableListView with 1000 entries and not more than 10 lines shall be printed per page, the navigation bar would have 100 entries. Because this is not feasible PagingNavigation's navigation bar is pageable as well.
The page links displayed are automatically adjusted based on the number of page links to be displayed and a margin. The margin makes sure that the page link pointing to the current page is not at the left or right end of the page links currently printed and thus providing a better user experience.
Use setMargin() and setViewSize() to adjust the navigation's bar view size and margin.
Please @see PagingNavigator for a ready made component which already includes links to the first,previous, next and last page. @author Jonathan Locke @author Eelco Hillenius @author Juergen Donnerstag

    
    return lv;
  }
  
  private void addDemoPagingNavigation(final PageableListView<Book> lv) {
    add(new PagingNavigation("navigation", lv));
    
    final IPagingLabelProvider pagingLabelProvider = new IPagingLabelProvider() {
      private static final long serialVersionUID = 1L;
      
      @Override
      public String getPageLabel(final int page) {
        return "page" + (page + 1);
      }
    };
    final PagingNavigation pagingNavigation = //
      new PagingNavigation("navigationCustomized", lv, pagingLabelProvider) {
      
      private static final long serialVersionUID = 1L;
      
      @Override
      protected void populateItem(final LoopItem loopItem) {

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             * org.apache
             * .wicket.markup.html.navigation.paging.IPagingLabelProvider)
             */
            @Override
            protected PagingNavigation newNavigation( final IPageable pageable, final IPagingLabelProvider labelProvider ) {
                return new PagingNavigation( "navigation", pageable, labelProvider ) {
                    private static final long serialVersionUID = 1L;


                    /*
                     * (non-Javadoc)
                     *

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     * @return the navigation object
     */
    
    @Override
    protected PagingNavigation newNavigation(final String id, final IPageable pageable, final IPagingLabelProvider labelProvider) {
        return new PagingNavigation(id, pageable, labelProvider) {
            /** Attribute for active state */
            private final AttributeModifier activeAttribute = AttributeModifier.append("class", "active");


            @Override
            protected void populateItem(final LoopItem loopItem) {

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        listItem.add(new Label("txt", txt));
      }
    };


    add(table);
    PagingNavigation navigation = new PagingNavigation("navigation", table);
    add(navigation);
  }

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       */
      @Override
      protected PagingNavigation newNavigation(final String id, IPageable pageable,
        IPagingLabelProvider labelProvider)
      {
        PagingNavigation nav = new PagingNavigation(id, pageable);
        nav.setMargin(2);
        if (nav.getViewSize() > 5)
        {
          nav.setViewSize(5);
        }


        nav.setSeparator(", ");
        return nav;
      }
    });
  }

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        listItem.add(new Label("txt", txt));
      }
    };


    add(table);
    PagingNavigation navigation = new PagingNavigation("navigation", table);
    add(navigation);
  }

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       *      org.apache.wicket.markup.html.navigation.paging.IPagingLabelProvider)
       */
      protected PagingNavigation newNavigation(IPageable pageable,
          IPagingLabelProvider labelProvider)
      {
        PagingNavigation nav = new PagingNavigation("navigation", pageable);
        nav.setMargin(2);
        if (nav.getViewSize() > 5)
        {
          nav.setViewSize(5);
        }


        nav.setSeparator(", ");
        return nav;
      }
    });
  }

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    super(id, pageable);
  }


  @Override
  protected PagingNavigation newNavigation(final String id, IPageable pageable, IPagingLabelProvider labelProvider) {
    PagingNavigation navigation = super.newNavigation(id, pageable, labelProvider);
    navigation.setViewSize(11);
    return navigation;
  }

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  @Override
  protected PagingNavigation newNavigation(final String id, IPageable pageable,
    IPagingLabelProvider labelProvider)
  {
    PagingNavigation navigation = super.newNavigation(id, pageable, labelProvider);
    navigation.setViewSize(11);
    return navigation;
  }

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      /**
       * @see org.apache.wicket.markup.html.navigation.paging.PagingNavigator#newNavigation(org.apache.wicket.markup.html.navigation.paging.IPageable, org.apache.wicket.markup.html.navigation.paging.IPagingLabelProvider)
       */
      protected PagingNavigation newNavigation(IPageable pageable, IPagingLabelProvider labelProvider)
      {
                PagingNavigation nav = new PagingNavigation("navigation", pageable);
                nav.setMargin(2);
                if (nav.getViewSize() > 5)
                {
                    nav.setViewSize(5);
                }
                
                nav.setSeparator(", ");
                return nav;
      }
        });
  }

View Full Code Here

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