multicell select in a aparticular row of a grid

[kolli]

I have a requirement of multi cell select in a particular row of a grid. I tried setting the selection mode for cellselection model to MULTI but i couldnot find any difference.

So i wrote this piece of code and i am able to select multiple cells by pressing the shift key, It works fine except that the first clicked cell looses the selection.


import com.extjs.gxt.ui.client.core.El;
import com.extjs.gxt.ui.client.data.ModelData;
import com.extjs.gxt.ui.client.event.GridEvent;
import com.extjs.gxt.ui.client.widget.grid.CellSelectionModel;
import com.google.gwt.dom.client.Element;

public class RowCellSelectionModel<M extends ModelData> extends CellSelectionModel<M> {

int lastSelectedRow;
int lastSelectedCol;

@Override
protected void handleMouseDown(GridEvent e) {
if(e.colIndex ==0 )
return;
if(lastSelectedRow == 0)
{
selectCell(e.rowIndex, e.colIndex);
// grid.getView().focusCell(e.rowIndex, e.colIndex, true);
lastSelectedRow = e.rowIndex;
lastSelectedCol = e.colIndex;
}else if (lastSelectedRow == e.rowIndex)
{
if(e.isShiftKey())
{
for (int i = 0 ; i < store.getCount(); i++) {
Element cell = grid.getView().getCell(lastSelectedRow, i);
if (cell != null) {
El.fly(cell).removeStyleName("x-grid3-cell-selected");
}
}

if(lastSelectedCol > e.colIndex){
for (int iter = e.colIndex ; iter < lastSelectedCol +1 ; iter++)
{
Element cell = grid.getView().getCell(e.rowIndex, iter);
if (cell != null) {
El.fly(cell).addStyleName("x-grid3-cell-selected");
}
// grid.getView().focusCell(e.rowIndex, iter, true);

}
lastSelectedRow = e.rowIndex;
}else
{
for (int iter = lastSelectedCol; iter < e.colIndex + 1 ; iter++)
{
Element cell = grid.getView().getCell(e.rowIndex, iter);
if (cell != null) {
El.fly(cell).addStyleName("x-grid3-cell-selected");
}
// grid.getView().focusCell(e.rowIndex, iter, true);
}
lastSelectedRow = e.rowIndex;
// lastSelectedCol = e.colIndex;
}
}else
{
for (int i = 0 ; i < store.getCount(); i++)
{
Element cell = grid.getView().getCell(lastSelectedRow, i);
if (cell != null) {
El.fly(cell).removeStyleName("x-grid3-cell-selected");
}
}
selectCell(e.rowIndex, e.colIndex);
lastSelectedRow = e.rowIndex;
lastSelectedCol = e.colIndex;
}
}else
{
for (int i = 0 ; i < store.getCount(); i++)
{
Element cell = grid.getView().getCell(lastSelectedRow, i);
if (cell != null) {
El.fly(cell).removeStyleName("x-grid3-cell-selected");
}
}
selectCell(e.rowIndex, e.colIndex);
lastSelectedRow = e.rowIndex;
lastSelectedCol = e.colIndex;
}
super.handleMouseDown(e);
}
}

Am i doing something wrong??

[kolli]

Well i figured out that the first cell not getting selected due to the focus. Then i decided to use the deferred command and set the cell selected style after all the events occur..