Friday, November 9, 2012

DataGrid - Click to select row, click again to deselect row

Is there an easy way to create a data grid, where when the user selects a row to select it. Then, when the user selects the same row again, the row will deselect?

I have been trying to use a NoSelectionModel and keeping the last selected, but you aren't able to use selectionModel.setSelected(object, false) inside the event.

Here is my code:

        selectionModel = new NoSelectionModel<Object>();
        selectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
            Object lastSelected = null;
            @Override
            public void onSelectionChange(SelectionChangeEvent event) {
                Object selected = selectionModel.getLastSelectedObject();
                if(!selected.equals(lastSelected)) {
                    // call to method that we have a new selected object
                } else {
                    selectionModel.setSelected(selected, false);
                }
                lastSelected = selected;
            }
        });
        setSelectionModel(selectionModel);

Any help would be appreciated, thanks!

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