Adding click event

[Antonio Bulgheroni]

Dear all,

I would like to do some actions when users click on a chart. The
best way would be to have a click event emitted by the chart with the
corresponding listener. But I was unable to find any click event. Am I
right?

Do you know any workaround or should I submit a feature request?

Thanks for helping,
toto

[asgallant]

Most charts expose the "select" event, which you can hook into via event listeners: http://code.google.com/apis/chart/interactive/docs/events.html, http://code.google.com/apis/ajax/playground/?type=visualization#select_event

As an example:

/*  hooks the select event of the chart
 *  assumes:
 *    chart is the chart object
 */
google.visualization.events.addListener(chart, 'select', function() {
    alert('select event fired');
});

You can call the #getSelection method of the chart object to get the row and/or column of the DataTable entry representing the chart element selected.