jstree-shiny: Shiny bindings for jstree

In jsTreeR: A Wrapper of the JavaScript Library 'jsTree'

Shiny bindings for jstree

Description

Output and render functions for using jstree within Shiny applications and interactive Rmd documents. See examples with jstreeExample.

Usage

jstreeOutput(outputId, width = "100%", height = "auto")

renderJstree(expr, env = parent.frame(), quoted = FALSE)

Arguments

outputId	output variable to read from
width, height	must be a valid CSS unit (like '100%', '400px', 'auto') or a number, which will be coerced to a string and have 'px' appended
expr	an expression that generates a jstree
env	the environment in which to evaluate expr
quoted	logical, whether expr is a quoted expression (with quote()); this is useful if you want to save an expression in a variable

Value

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.

Shiny values

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).

jsTreeR documentation built on July 4, 2024, 9:08 a.m.