Singleton manipulation functions
Functions for manipulating singleton objects in tag
hierarchies. Intended for framework authors.
surroundSingletons(ui) takeSingletons(ui, singletons = character(0), desingleton = TRUE)
ui |
Tag object or lists of tag objects. See builder topic. |
singletons |
Character vector of singleton signatures that have already
been encountered (i.e. returned from previous calls to
|
desingleton |
Logical value indicating whether singletons that are encountered should have the singleton attribute removed. |
surroundSingletons preprocesses a tag object by changing any
singleton X into <!–SHINY.SINGLETON[sig]–>X'<!–/SHINY.SINGLETON[sig]–>
where sig is the sha1 of X, and X' is X minus the singleton attribute.
takeSingletons returns a list with the elements ui (the
processed tag objects with any duplicate singleton objects removed) and
singletons (the list of known singleton signatures).
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