# Legato.Layer.Blank

This class is a specialized WMS Layer. It acts like a usual wms layer but it will always be transparent. You could use this layer as a baselayer if, e.g. you just want to add some overlays to your map but you don’t want to use a baselayer which is visible.

#### Inherits from

- <OpenLayers.Layer.WMS>

Summary

Legato.Layer.Blank | This class is a specialized WMS Layer.
Functions |
Legato.Layer.Blank Create a blank WMS layer object | Example: (code) var wms = new Legato.Layer.Blank(“Transparent Layer”); (end)
lc:BBoxValueProvider XML based config for a | Legato.Control.BBoxValueProvider.
Properties |
QName The qualified name for this control. Needed by XML config to | instantiate it.
name Defines the name of the blank layer instance. | See Also: <OpenLayers.Layer>
params An object with key/value pairs representing the GetMap | query string parameters and parameter values.

### Functions

### Legato.Layer.Blank Create a blank WMS layer object

Example: (code) var wms = new Legato.Layer.Blank(“Transparent Layer”); (end)

Parameters: name | {String} A name for the layer params - {Object} An object with key/value pairs representing the GetMap query string parameters
and parameter values. options | {Ojbect} Hashtable of extra options to tag onto the layer

## lc:BBoxValueProvider XML based config for a

Legato.Control.BBoxValueProvider.

See Also: | Legato.Control - Legato.Beans.BeanFactory - <QName>

#### A valid config example for a BBoxValueProvider would be

>     <lc:BBoxValueProvider left="bboxLeft" right="bboxRight" top="bboxTop" bottom="bboxBottom"/>

Summary

Properties |
QName The qualified name for this control. Needed by XML config to | instantiate it.
name Defines the name of the blank layer instance. | See Also: <OpenLayers.Layer>
params An object with key/value pairs representing the GetMap | query string parameters and parameter values.

### Properties

### QName The qualified name for this control. Needed by XML config to

instantiate it.

### name Defines the name of the blank layer instance.

See Also: <OpenLayers.Layer>

### params An object with key/value pairs representing the GetMap

query string parameters and parameter values.

See Also: Legato.Layer.Blank

ValueProvider which gives you the possibility to be notified about every change of the current BBox Selection.
Abstract base class for all Legato control classes
This class is a specialized WMS Layer.