how to Refresh DataGrid and scroll to old position?

[srinuetta]

Hi All,
i want Refresh DataGrid and scroll to old position which i actually selected before refresh.
i have some unique number in my item to select bute how to handle multiple selection?

regards
Srinu

[Mahes]

Hi
gird._refresh() will help you to refresh the grid. For selection you may need to do it programtically

Thanks
Mahes

[Evan]

Yes, you can use grid.scrollToRow(rowIndex) for scrolling to the selected row.

[Eric Pasquier]

Hi Evan.

I was not the original writer of this post, but I tried this to.
These is a bug in the pageRow calculation, may be due to the fact that rows
content is not loaded yet. In this case, the algorithm use the default
height for intermediate pages (600 or 800 px if I remember), and this leads
to a wrong row position.

I found a workaround, by using a timeout to make a second call :

  dojo.addOnLoad(function() {
  var oldPos = dojo.cookie("GridScrollPos");
    gridData.setScrollTop(oldPos);
    setTimeout(function(){
      gridData.setScrollTop(oldPos);
    },
    100);

  });

  dojo.addOnUnload(function() {
    var LscrollTop = gridData.scrollTop;
    dojo.cookie("GridScrollPos", LscrollTop, {expires: 1});
  });


This seems to be the same if you move the scroll bar quickly to the end of
the table and release the mouse: the scroll bar moves back, and the last row
is not shown.

Eric.


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Envoyé : mardi 4 janvier 2011 06:39
À : [hidden email]
Objet : Re: [Dojo-interest] how to Refresh DataGrid and scroll to old
position?


Yes, you can use grid.scrollToRow(rowIndex) for scrolling to the selected
row.
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[ismaeljohnson11]

hi

[alaska]

The method I've used to do this relies on a bit of hidden functionality in the DataGrid:

----
grid._lastScrollTop=grid.scrollTop;                                                                                                                                                  
grid._refresh();
----

It works perfectly, but it will make two requests to the datastore.  One for the standard first pull (beginning at 0), another for the data corresponding to your current position.

If anyone knows of a method to get around that, please post it.

Eric Pasquier wrote

Hi Evan.

I was not the original writer of this post, but I tried this to.
These is a bug in the pageRow calculation, may be due to the fact that rows
content is not loaded yet. In this case, the algorithm use the default
height for intermediate pages (600 or 800 px if I remember), and this leads
to a wrong row position.

I found a workaround, by using a timeout to make a second call :

  dojo.addOnLoad(function() {
  var oldPos = dojo.cookie("GridScrollPos");
    gridData.setScrollTop(oldPos);
    setTimeout(function(){
      gridData.setScrollTop(oldPos);
    },
    100);

  });

  dojo.addOnUnload(function() {
    var LscrollTop = gridData.scrollTop;
    dojo.cookie("GridScrollPos", LscrollTop, {expires: 1});
  });


This seems to be the same if you move the scroll bar quickly to the end of
the table and release the mouse: the scroll bar moves back, and the last row
is not shown.

Eric.


-----Message d'origine-----
De : [hidden email]
[mailto:[hidden email]] De la part de Evan
Envoyé : mardi 4 janvier 2011 06:39
À : [hidden email]
Objet : Re: [Dojo-interest] how to Refresh DataGrid and scroll to old
position?


Yes, you can use grid.scrollToRow(rowIndex) for scrolling to the selected
row.
--
View this message in context:
http://dojo-toolkit.33424.n3.nabble.com/how-to-Refresh-DataGrid-and-scroll-t
o-old-position-tp2026298p2189974.html
Sent from the Dojo Toolkit mailing list archive at Nabble.com.
_______________________________________________
FAQ: http://dojotoolkit.org/support/faq
Book: http://docs.dojocampus.org
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[dichotomy]

grid.sort();

[dichotomy]

I apologize, I had my head buried in a situation of refreshing a grid with an ObjectStore wrapped custom JsonRest store... my post is out of context and unhelpful to the idea of restoring a grid to a scrolled location on page load (although, grid.sort() is a "public" method of refreshing).

dichotomy wrote

grid.sort();