Thanks,
I'm not too clear on what you said, "you can call setSelection([]) in each
event of selection".
function selectHandler() {
var selection = pieChart.getSelection();
var message = null;
for (var i = 0; i < selection.length; i++) {
var item = selection[i];
if (item.row != null && item.column != null) {
message += '{row:' + item.row + ',column:' + item.column +
'}';
} else if (item.row != null) {
message += '{row:' + item.row + '}';
} else if (item.column != null) {
message += '{column:' + item.column + '}';
}
}
if (message == '') {
message = 'nothing';
}
alert('You selected ' + message);
}
On Mon, Sep 21, 2009 at 9:16 AM, Bug Chart <bugch...@google.com> wrote:
> Hi.
> When a legend item is clicked, the relevant selected object contains only
> the 'row' property of the relevant series. So by looking at the 'row'
> property only, there is no difference between clicking on the legend or on a
> pie slice.
>
> An additional problem that you might encounter is that the getSelection
> method returns an array of selected objects. If you want this method to
> always return the last pressed item, you can call setSelection([]) in each
> event of selection. This way, on each new select event, exactly one object
> would be in the getSelection array and its 'row' property would indicate the
> corresponding element that was just pressed.
>
> Hope that helps in creating the desired behavior.
>
> BTW: As your question regards the Google Visualization API and not Google
> Chart API, you should have asked this in
> the Google Visualization API Group (
> http://groups.google.com/group/google-visualization-api)
>
> >
>
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