You can try overriding ActionCell#handlesSelection() to return true to
disable the default selection.  We might need to do so for all interactive
cells and change the JavaDoc of Cell#handlesSelection() to clarify that it
can be used to simply disable default selection.  But in general, this is
what handlesSelection() was designed to do.

Thanks,
John LaBanca
[email protected]


On Tue, Feb 22, 2011 at 8:44 AM, Thomas Visser <[email protected]>wrote:

> ActionCell already returns false for handlesSelection(). If a cell
> declares to handle the selection, the default way of (de)selecting, by
> clicking in the row, does not work anymore. Then it is the value-
> updater's task to do so. I recently wrote something about it in a blog
> post. See for more information:
> http://thoughtsofthree.com/2011/02/creating-a-gwt-radiobuttoncell/
> (paragraph "Depending on and handling the selection")
>
> On Feb 22, 5:30 am, Patrick Tucker <[email protected]> wrote:
> > I haven't played with this a whole bunch but have you looked at
> > handlesSelection?  I was under the impression that by setting this to
> > false you indicate that a particular cell type  is not allowed to
> > determine selection state?
> >
> > Like if you have a checkboxcell it can be the only cell that
> > determines whether or not the row is selected.
> >
> > On Feb 11, 2:09 pm, "Henry H." <[email protected]> wrote:
> >
> >
> >
> >
> >
> >
> >
> > > yeah, i had the feeling i have to ditch the selectionModel.
> > > thanks for your help...
> >
> > > On Feb 11, 6:28 am, Thomas Visser <[email protected]> wrote:
> >
> > > > This is not possible. In your case, the click event is always also
> > > > given to the SelectionModel.
> >
> > > > See line 971 in CellTable (http://www.google.com/codesearch/p?
> > > > hl=en#A1edwVHBClQ/user/src/com/google/gwt/user/cellview/client/
> > > > CellTable.java&q=CellTable%20package:http://google-web-toolkit
> > > > %5C.googlecode%5C.com&sa=N&cd=1&ct=rc):
> >
> > > > if (selectionModel != null && "click".equals(eventType) && !
> > > > handlesSelection) {
> > > >         selectionModel.setSelected(value, true);
> >
> > > > }
> >
> > > > As you can see, if you could make the handlesSelection boolean true,
> > > > the selectionModel will not be updated. This boolean is true if one
> > > > (or more) cell(s) declare(s) to handle the selection. ActionCell does
> > > > not do that. What you can do is create your own cell, make it handle
> > > > the selection, and use it for all the columns that you want to be
> > > > clickable.
> >
> > > > On Feb 11, 1:42 am, "Henry H." <[email protected]> wrote:
> >
> > > > > hi,
> > > > > i have a celltable with a selectionModel but also a column of
> > > > > actioncells.
> > > > > the selectionModel and actioncells both handle click events, but
> when
> > > > > i click the action cell, it also triggers the selectionmodel click
> > > > > handler.
> > > > > is it possible to prevent this? Or do i have to nix the
> selectionModel
> > > > > and go with clickable cells on the row?
> >
> > > > > thanks.
>
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