ButtonEmbedImage is a mixing providing the necessary code to trigger UDW and use the content choosen by the user to correctly set the properties of an embed element that represents an image.
Returns the image field object of the given content.
Checks whether the current selection can be considered as an image.
This is the case if the content type has an ezimage field definition
and if the corresponding field is not empty. This method is meant to
be used as a
isSelectable function implementation for the UDW.
the UDW potential selection