CODEWITHSUNDEEP
gwtpaginationpagercelltable
StackOverFlow
StackOverFlow

Reputation: 4614

GWT SimplePager - Getting Incorrect pager index onclick of pager's LastButton

I am using my GWT 2.3 Celltable & SimplePager

Written CustomPager by extending SimplePager class.

Used ListBox to show different page size for celltable like 10,20,50,100

I am showing 11 record in celltable when page size is 10. (1 empty record(row) + 10 records(rows)

when pageSize = 20 then 21 rows(records), when pageSize = 50 then 51 rows(records), when pageSize = 100 then 101 rows(records).

Whenever selected page size 50 or 100, pager & display returning correct values so pagination working correctly, but not working in case of 10 & 20. Strange :|

After debugging found following thing:

When page size is 10 or 20, onclick of lastPage button of pager getting Incorrect pageIndex of pager & incorrect values of startIndex.

wrong startindex = display.getVisibleRange().getStart()

//Following method called when button click event fires

 protected void onRangeChanged(HasData<RecordVO> display) {

            info("Called onRangeChanged method of AsyncDataProvider");

            eventType = "PAGINATION";

            setPrevPageIndexForChangedRecord();
            cellTable.setRowCount(searchRecordCount, false);

            startRowIndexOfPage = display.getVisibleRange().getStart(); // startRowIndex;
             // ------ My code is here

}

Incorrect value is as follows when clicked on pagers Last button assume page size=10 i.e 1 dummy record + 10 Actual record.

    startRowIndexOfPage = display.getVisibleRange().getStart(); // startRowIndex;
    info("Start row index of page = "+startRowIndexOfPage);
    info("GWT Current page index = "+pager.getPage());
    info("GWT Total page count = "+pager.getPageCount());
    info("Gwt Total page size  = "+pager.getPageSize());
    info("Gwt page start index = "+pager.getPageStart());

Incorrect Output onclick of pagers last button when page size=10 :

(-:-) 2013-03-05 09:53:22,136 [INFO ] Start row index of page = 990
(-:-) 2013-03-05 09:53:22,150 [INFO ] GWT Current page index = 90
(-:-) 2013-03-05 09:53:22,178 [INFO ] GWT Total page count = 91
(-:-) 2013-03-05 09:53:22,191 [INFO ] Gwt Total page size = 11
(-:-) 2013-03-05 09:53:22,204 [INFO ] Gwt page start index = 990

Main problem is that pager.getPage() returning 90 instead of last page index :(

Is there any way to solve this problem? Please provide me some pointers/solution for this question.

Thanks in advance.

Upvotes: 2

Views: 1793

Answers (2)

Adarsha
Adarsha

Reputation: 895

Try using following arithmetic operation to find startRowIndexOfPage -

 startRowIndexOfPage = display.getVisibleRange().getStart() - pager.getPage();

And make sure page limit is 10 not 11. And make your pager unaware of the extra empty row you are adding.

Upvotes: 1

Suresh Atta
Suresh Atta

Reputation: 121998

Have you tried like this ??

@Override
protected void onRangeChanged(HasData<YourObject> display) 
{
        int start = display.getVisibleRange().getStart();
        int end  = start + display.getVisibleRange().getLength();                
        if (ListOfYourObjects != null) 
        {
              end = end >= ListOfYourObjects.size() ? ListOfYourObjects.size(): end;
              List<YourObject> sub = ListOfYourObjects.subList(start, end);
              updateRowData(start, sub);
        }   
}

Upvotes: 0

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