Output and render functions for using jstree within
Shiny applications and interactive Rmd documents. See examples with
jstreeExample.
jstreeOutput(outputId, width = "100%", height = "auto")renderJstree(expr, env = parent.frame(), quoted = FALSE)
jstreeOutput returns an output element that can be included
in a Shiny UI definition, and renderJstree returns a
shiny.render.function object that can be included in a Shiny server
definition.
output variable to read from
must be a valid CSS unit (like '100%',
'400px', 'auto') or a number, which will be coerced to a
string and have 'px' appended
an expression that generates a jstree
the environment in which to evaluate expr
logical, whether expr is a quoted expression
(with quote()); this is useful if you want to save an expression
in a variable
If the outputId is called "ID" for example, you have four
or seven available Shiny input values in the server:
input[["ID"]] contains the tree with the node fields text
and data only, input[["ID_full"]] contains the full tree,
input[["ID_selected"]] contains the selected nodes,
input[["ID_selected_paths"]] is like input[["ID_selected"]]
except that it provides the paths to the selected nodes instead of only
the values of their text field. This makes four Shiny values always
present. There are three additional Shiny values if you have set
checkboxes=TRUE in the jstree command:
input[["ID_checked"]] contains the checked nodes,
input[["ID_checked_paths"]] provides the paths to the checked
nodes. If you have set checkboxes=TRUE and
checkWithText=TRUE (the default), then these two additional
Shiny values are useless because 'checked' is the same as 'selected' in
this situation. Try jstreeExample("checkWithText"). Finally, the
seventh Shiny value that is provided when checkboxes=TRUE is
input[["ID_checked_tree"]]. It is like input[["ID_checked"]]
except that it returns the hierarchy, in other words it provides the
checked nodes with their parent(s).