Class: ZoomToExtent

ol.control. ZoomToExtent

experimental new ol.control.ZoomToExtent(opt_options)

Create a control that adds a button, which, when pressed, changes the map view to a specific extent. To style this control use the css selector .ol-zoom-extent.

Name Type Argument Description
options optional

Options.

Name Type Description
className string | undefined

Class name. Default is ol-zoom-extent.

target Element | undefined

Target.

tipLabel string | undefined

Text label to use for the button tip. Default is Zoom to extent

extent ol.Extent | undefined

The extent to zoom to. If undefined the validity extent of the view projection is used.

Fires:

Extends

Methods

experimental inherited bindTo(key, target, opt_targetKey){ol.ObjectAccessor}

The bindTo method allows you to set up a two-way binding between a source and target object. The method returns an ol.ObjectAccessor with a transform method that lets you transform values on the way from the source to the target and on the way back.

For example, if you had two map views (sourceView and targetView) and you wanted the target view to have double the resolution of the source view, you could transform the resolution on the way to and from the target with the following:

sourceView.bindTo('resolution', targetView)
  .transform(
    function(sourceResolution) {
      // from sourceView.resolution to targetView.resolution
      return 2 * sourceResolution;
    },
    function(targetResolution) {
      // from targetView.resolution to sourceView.resolution
      return targetResolution / 2;
    }
  );
Name Type Argument Description
key string

Key name.

target ol.Object

Target.

targetKey string <optional>
optional

Target key.

experimental inherited dispatchChangeEvent()

Dispatches a change event. Register a listener for this event to get notified of changes.

Fires:
  • change

experimental inherited get(key){*}

Gets a value.

Name Type Description
key string

Key name.

experimental inherited getKeys(){Array.<string>}

Get a list of object property names.

Returns:
of property names.

Get the map associated with this control.

experimental inherited getProperties(){Object.<string, *>}

Get an object of all property names and values.

experimental inherited notify(key)

Notify all observers of a change on this property. This notifies both objects that are bound to the object's property as well as the object that it is bound to.

Name Type Description
key string

Key name.

experimental inherited on(type, listener, opt_this){goog.events.Key}

Listen for a certain type of event.

Name Type Argument Description
type string | Array.<string>

The event type or array of event types.

listener function

The listener function.

this Object <optional>
optional

The object to use as this in listener.

Returns:
key for the listener.

experimental inherited once(type, listener, opt_this){goog.events.Key}

Listen once for a certain type of event.

Name Type Argument Description
type string | Array.<string>

The event type or array of event types.

listener function

The listener function.

this Object <optional>
optional

The object to use as this in listener.

Returns:
key for the listener.

experimental inherited set(key, value)

Sets a value.

Name Type Description
key string

Key name.

value *

Value.

Remove the control from its current map and attach it to the new map. Subclasses may set up event handlers to get notified about changes to the map here.

Name Type Description
map ol.Map

Map.

experimental inherited setValues(values)

Sets a collection of key-value pairs.

Name Type Description
values Object.<string, *>

Values.

experimental inherited un(type, listener, opt_this)

Unlisten for a certain type of event.

Name Type Argument Description
type string | Array.<string>

The event type or array of event types.

listener function

The listener function.

this Object <optional>
optional

The object to use as this in listener.

experimental inherited unbind(key)

Removes a binding. Unbinding will set the unbound property to the current value. The object will not be notified, as the value has not changed.

Name Type Description
key string

Key name.

experimental inherited unbindAll()

Removes all bindings.

experimental inherited unByKey(key)

Removes an event listener using the key returned by on() or once().

Name Type Description
key goog.events.Key

Key.