elements

A MutableListImpl of PopupElement objects that represent an ordered list of pop-up elements. The order of the MutableListImpl is the order that elements are shown in the pop-up window.

For backward compatibility with a webmap or webscene created by clients that don't support the popup elements, a few popup elements are created to match the legacy popup style when reading a popup definition without popup elements:

• a TextPopupElement if PopupDefinition.description is not empty

• a FieldsPopupElement if PopupDefinition.description is empty

• a MediaPopupElement if PopupDefinition.media is not empty

• an AttachmentsPopupElement if PopupDefinition.showAttachments is true

Vice versa, if the user updates the popup elements, the legacy popup style is updated during the PopupDefinition serialization, in order to match as much as possible the popup elements, so that older clients can display a popup that looks similar.