DataSelector: DataSelector
In DavidBarke/QWUtils: Useful Methods For Programming with Shiny

Description Usage Format Usage Methods

R6Class for generating customised selections of groups, datasets and columns. After initialing the DataSelector an arbitrary amout of elements may be added in the shiny server function. After adding all elements the DataSelector gets activated by invoking the method this$callModule(). The display of the elements is handled by data_selector_output. For each element of a DataSelector data_selector_output has to be called either in the ui function or inside of renderUI to display the UI of the corresponding element.

1	DataSelector

An object of class R6ClassGenerator of length 24.

DataSelector$new(
  id = "data_selector"
)$Group(
  id = "group",
  label = "Select group"
)$Dataset(
  id = "dataset",
  group_id = "group",
  label = "Select dataset"
)$Column(
  id = "column_1",
  group_id = "group",
  dataset_id = "dataset",
  label = "Select column 1",
  setdiff_id = "column_2"
)$Column(
  id = "column_2",
  group_id = "group",
  dataset_id = "dataset",
  label = "Select column 2",
  setdiff_id = "column_1"
)$callModule(
  .values = values,
  .parent = parent
)

new(id)

Initialize the data_selector.

`id`	The id of the data_selector.

callModule(.values, .parent)

Activate the data_selector inside the server function. Before calling this function NO ui will be displayed.

`.values`	List of `reactive`-like objects as specified by XXX.
`.parent`	`Node`.

Column(id, group_id, dataset_id, label, extended = TRUE, setdiff_id = NULL, multiple = FALSE)

Add a selectInput for selecting a column of a dataset.

`id`	`Character`. The id of the column element.
`group_id`	`Character`. The id of the parent group element.
`dataset_id`	`Character`. The id of the parent dataset element.
`label`	The label of the `selectInput`.
`extended`	`Logical`. If `TRUE`, the label of the `selectInput` is extended by a `data_selector_column_dropdown`.
`setdiff_id`	`Character` vector. The value of the `selectInput` is compared to the values of all column elements with `id %in% setdiff_id`. If one of these elements has the same value, this element's `selectInput` gets updated to the first free column. If `multiple =` `TRUE`, no comparison is done.
`multiple`	`Logical`. If `TRUE`, multiple columns can be selected.

Dataset(id, group_id, label, extended = TRUE)

Add a selectInput for selecting a dataset of a group.

`id`	The id of the dataset element.
`group_id`	The id of the parent group element.
`label`	The label of the `selectInput`.
`extended`	`Logical`. If `TRUE`, the label of the `selectInput` is extended by a `data_selector_dataset_dropdown`.

Group(id, label, extended = TRUE)

Add a selectInput for selecting a group.

`id`	The id of the group element.
`label`	The label of the `selectInput`.
`extended`	`Logical`. If `TRUE`, the label of the `selectInput` is extended by a `data_selector_column_dropdown`.