UIElement class. It is used to represent UI not a content of the document. This element can't be split and selection can't be placed inside this element.
injectUiElementHandling( view )
This function injects UI element handling to the given document.
A callback is added to document keydown event. The callback handles the situation when right arrow key is pressed and selection is collapsed before a UI element. Without this handler, it would be impossible to "jump over" UI element using right arrow key.
view : View
View controller to which the quirks handling will be injected.