setPanelWidth() for Lightning Experience

For LWC usage, see updatePanel().

Arguments

Aura Components Sample Code

This component, when added to a single-column Lightning page used in a utility bar, sets the width of the utility panel to 800 pixels when the button is pressed.

Component code:

1<aura:component implements="flexipage:availableForAllPageTypes" access="global" >
2    <lightning:utilityBarAPI aura:id="utilitybar" />
3    <lightning:button label="Set Panel Width" onclick="{! c.handleSetPanelWidth }" />
4</aura:component>

Controller code:

1({
2    handleSetPanelWidth : function(component, event, helper) {
3        var utilityAPI = component.find("utilitybar");
4        utilityAPI.setPanelWidth({
5            widthPX: 800
6        });
7    }
8})

Response

This method returns a promise that, upon success, resolves to true.