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dayananda
475
Getting all RowItem for currently selected page
posted

Hi,

i have added pageChangeListener to GridView, i want to get all RowItems for the currently selected page,

getRows() method giving previous page RowItems, can you people give me any suggestion,

any help will be appreciated.

 

Thanks

Dayananda B V 

  • 1579
    posted

    Hello, Dayananda B V!

    Unfortunatelly you canot use getRows() for that aim. But there is a trick, you can apply for your purpose. In the event handler you can do the following:

    HtmlGridView grid = (HtmlGridView) e.getComponent();

    List data = (List) grid.getDataSource().getWrappedData();

    where data  is the actual underlying data source (not limited by page size). Then you have the page size and the new page index, accordingly:

    int pageSize = grid.getPageSize();

    int newIndex = e.getNewPageIndex();

     By having the whole data list for the data source, the new index and the page size, you can now estimate the list of rows for the current page:

    int startIndex = newIndex * pageSize;

    int endIndex = startIndex + pageSize - 1;

     Now you can iterate through the list containing all rows (data), starting from the startIndex and ending with the endIndex and get the property you need, in my example:

    for(int i = startIndex; i <= endIndex; i++){

    Clients client = (Clients) data.get(i);

    str += ((Clients) data.get(i)).getId() +     "; ";

    }

    and display the values

    msg = "Clients on page: " + str;

    Thanks!

    -- Bozhidar