Add contextmenu Plugin
Add a contextmenu to the map or markers/vector layers.
addContextmenu(map)
map |
a map widget object created from |
This function is only used to include the required JavaScript and CSS bindings and to set up some Shiny event handlers.
The contextmenu for
the map must be defined in leafletOptions.
the markers/vector layers must be defined in markerOptions
or pathOptions.
When a contextmenu is selected, a Shiny input with the ID "MAPID_contextmenu_select"
is set (‘MAPID' refers to the map’s id).
If the selected contextmenu item is triggered from:
the map, the returned list containts the text of the item.
the markers, the returned list also contains the
layerId, group, lat, lng and label.
the vector layers, the returned list also contains the
layerId, group and label.
A leaflet map object
Other Contextmenu Functions:
addItemContextmenu(),
hideContextmenu(),
insertItemContextmenu(),
mapmenuItems(),
markermenuItems(),
menuItem(),
removeItemContextmenu(),
removeallItemsContextmenu(),
setDisabledContextmenu(),
showContextmenu()
library(leaflet)
leaflet(options = leafletOptions(
contextmenu = TRUE,
contextmenuWidth = 200,
contextmenuItems =
mapmenuItems(
menuItem("Zoom Out", "function(e) {this.zoomOut()}", disabled=FALSE),
"-",
menuItem("Zoom In", "function(e) {this.zoomIn()}")))) %>%
addTiles(group = "base") %>%
addContextmenu() %>%
addMarkers(data = breweries91, label = ~brewery,
layerId = ~founded, group = "marker",
options = markerOptions(
contextmenu = TRUE,
contextmenuWidth = 200,
contextmenuItems =
markermenuItems(
menuItem(text = "Show Marker Coords",
callback = "function(e) {alert(e.latlng);}",
index = 1)
)
))Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.