History Options

History Options

historyOptions(
  position = c("topright", "topleft", "bottomleft", "bottomright"),
  maxMovesToSave = 10,
  backImage = "fa fa-caret-left",
  forwardImage = "fa fa-caret-right",
  backText = "",
  forwardText = "",
  backTooltip = "Go to Previous Extent",
  forwardTooltip = "Go to Next Extent",
  backImageBeforeText = TRUE,
  forwardImageBeforeText = FALSE,
  orientation = c("horizontal", "vertical"),
  shouldSaveMoveInHistory = NULL
)

Arguments

position

Set the position of the History control. Default is topright.

maxMovesToSave

Number of moves in the history to save before clearing out the oldest. Default value is 10, use 0 or a negative number to make unlimited.

backImage

The class for the `back` button icon. Default is "fa fa-caret-left".

forwardImage

The class for the `forward` button icon. Default is "fa fa-caret-right".

backText

The text in the buttons. Default is ''.

forwardText

The text in the buttons. Default is ''.

backTooltip

Tooltip content. Default is "Go to Previous Extent".

forwardTooltip

Tooltip content. Default is "Go to Next Extent".

backImageBeforeText

When both text and image are present, whether to show the image first or the text first (left to right). Default is TRUE

forwardImageBeforeText

When both text and image are present, whether to show the image first or the text first (left to right). Default is FALSE

orientation

Whether to position the buttons on top of one another or side-by-side. Default is horizontal

shouldSaveMoveInHistory

A JS callback you can provide that gets called with every move. return false to not save a move.

Value

A list of further options for addHistory

References

https://github.com/cscott530/leaflet-history

See also

Other History Functions: addHistory(), clearFuture(), clearHistory(), goBackHistory(), goForwardHistory()

Examples

library(leaflet)
leaflet()  %>%
  addTiles() %>%
    addHistory(options = historyOptions(position = "bottomright",
    maxMovesToSave = 20,
    backText =  "Go back",
    forwardText = "Go forward",
    orientation = "vertical"
    ))