MessageBar Creates an instance of a MessageBar Control, for displaying messages. Instead, use the <code>sap.m.MessagePopover</code> control. sap.ui.core/Control Element ID upon which the MessageBar will be initially positioned. Specifies whether or not the MessageBar is visible. Invisible controls are not rendered. Maximum number of simultaneous messages being toasted in a row. Value '0' means this dynamic part is switched off. Maximum number of messages being displayed in the List before a scrollbar appears. Value '0' means no limit. Type: sap.ui.core.Popup.Dock SnapPoint of MessageBar over anchorId. Note: Use "begin" or "end" for RTL support. Note: "center" is not indicated, as positioning is only set once, either via the css "left" or the "right" attribute. Therefore a MessageBar will only be extended in one direction, as Messages come in. Adds/updates a supplied list of messages. The MessageBar will appear if at least one message exists. Array of messages. Deletes a supplied list of messages. The MessageBar will disappear when no message remains. Messages IDs to be deleted. Deletes all messages.