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I want to select the first item on rsListBox before doBeforeComposeChildren() method.
How to select the first item on onSelect$rsListBox below programmatically?
public void onSelect$rsListBox(Event evt) {
this.fcst_sensor_id = (String)rsListBox.getSelectedItem().getValue();
String header = (String)rsListBox.getSelectedItem().getLabel();
this.HeadingTitleReservoir.setLabel(header);
System.out.println("Selected id:" + this.fcst_sensor_id);
}
Before doBeforeComposeChildren ... there's nothing rendered yet so you can't select a listitem at this point.
onSelect$rsListBox is an event listener which also will only trigger if a component receives an event. If not yet rendered there won't be an event.
Said that, the think you might have to look into is model-based rendering (either by template or item renderer). i.e. you populate the data and selected object(s) before the rendering happens.
here an example http://zkfiddle.org/sample/3ajgh1d/1-listbox-with-model-and-initial-selection
Asked: 2018-10-19 01:29:19 +0800
Seen: 7 times
Last updated: Oct 19 '18