ol-ext

Class: LayerSwitcher

ol.control. LayerSwitcher

Layer Switcher Control.

new LayerSwitcher( [options])

Parameters:
Name Type Argument Description
options Object <optional>
Properties
Name Type Description
selection boolean

enable layer selection when click on the title
displayInLayerSwitcher function

function that takes a layer and return a boolean if the layer is displayed in the switcher, default test the displayInLayerSwitcher layer attribute
show_progress boolean

show a progress bar on tile layers, default false
mouseover boolean

show the panel on mouseover, default false
reordering boolean

allow layer reordering, default true
trash boolean

add a trash button to delete the layer, default false
oninfo function

callback on click on info button, if none no info button is shown DEPRECATED: use on(info) instead
extent boolean

add an extent button to zoom to the extent of the layer
onextent function

callback when click on extent, default fits view to extent
drawDelay number

delay in ms to redraw the layer (usefull to prevent flickering when manipulating the layers)
collapsed boolean

collapse the layerswitcher at beginning, default true
layerGroup ol.layer.Group

a layer group to display in the switcher, default display all layers of the map
noScroll boolean

prevent handle scrolling, default false
onchangeCheck function

optional callback on click on checkbox, you can call this method for doing operations after check/uncheck a layer

Layers attributes that control the switcher - allwaysOnTop {boolean} true to force layer stay on top of the others while reordering, default false - displayInLayerSwitcher {boolean} display the layer in switcher, default true - noSwitcherDelete {boolean} to prevent layer deletion (w. trash option = true), default false
Fires:
  • event:select
  • event:drawlist
  • event:toggle
  • event:reorder-start
  • event:reorder-end
  • layer:visible
  • layer:opacity

Extends

Members

tip

List of tips for internationalization purposes

Methods

displayInLayerSwitcher(layer)

Test if a layer should be displayed in the switcher

Parameters:
Name Type Description
layer ol.layer
Returns:

true if the layer is displayed

Type
boolean

drawPanel()

Draw the panel control (prevent multiple draw due to layers manipulation on the map with a delay function)

getLayerClass(layer)

Select a layer

Parameters:
Name Type Description
layer ol.layer.Layer
Returns:

the layer classname

Type
string

getPanel()

Get control panel

getSelection()

Get selected layer

Returns:
Type
ol.layer.Layer

hide()

Hide control

isOpen()

Is control open

Returns:
Type
boolean

selectLayer(layer)

Select a layer

Parameters:
Name Type Description
layer ol.layer.Layer

setHeader(html)

Add a custom header

Parameters:
Name Type Description
html Element | string

content html

setLayerVisibility(layer, li)

Set visibility for a layer

Parameters:
Name Type Description
layer ol.layer.Layer
li Element

the list element

setMap(map)

Set the map instance the control is associated with.

Parameters:
Name Type Description
map _ol_Map_

The map instance.

show()

Show control

toggle()

Toggle control