Interacting with charts via AJAX
The chart
component offers AJAX behavior events to interact with the chart by item selection.
How to do it…
A basic definition for a chart with <p:ajax>
bundled inside is given here:
<p:chart type="bar" id="withAjax" model="#{chartBean.barModel}" style="height:250px"> <p:ajax event="itemSelect" listener="#{chartBean.itemSelect}" update="growl" /> </p:chart>
The itemSelect
method retrieves an instance of org.primefaces.event.ItemSelectEvent
, which enables us to access the item index and series index of the selected chart item. The usage of the itemSelect
method is given here:
public void itemSelect(ItemSelectEvent event) { MessageUtil.addInfoMessageWithoutKey("Item selected", "Item Index:" + event.getItemIndex() + ", ...
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