GridCoverageLayerHelper (Geotools modules 34-SNAPSHOT API)

GridCoverageLayerHelper

All Implemented Interfaces:: EventListener, MapBoundsListener

public class GridCoverageLayerHelper extends InfoToolHelper

Used by InfoTool to query GridCoverageLayer objects.

Since:: 8.0
Author:: Michael Bedward

Field Summary

Fields inherited from class InfoToolHelper
contentRef, KEY_POSITION, layerRef
Constructor Summary

Constructors

Constructor

Description

GridCoverageLayerHelper()

Creates a new helper instance.
Method Summary

Modifier and Type

Method

Description

InfoToolResult

getInfo(Position2D pos)

Gets layer data at the specified position.

boolean

isSupportedLayer(Layer layer)

Called by the helper lookup system when selecting a helper for a given layer.

void

setLayer(Layer layer)

Sets the map layer for this helper.

Methods inherited from class InfoToolHelper
clearTransform, getContentToLayerTransform, getLayer, getMapContent, isTransformRequired, isValid, mapBoundsChanged, setMapContent

Methods inherited from class Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details
- GridCoverageLayerHelper
  
  public GridCoverageLayerHelper()
  
  Creates a new helper instance.
Method Details
- setLayer
  
  public void setLayer(Layer layer)
  
  Description copied from class: InfoToolHelper
  
  Sets the map layer for this helper.
  
  Overrides:
  
  setLayer in class InfoToolHelper
  
  Parameters:
  
  layer - the map layer
- isSupportedLayer
  
  public boolean isSupportedLayer(Layer layer)
  
  Description copied from class: InfoToolHelper
  
  Called by the helper lookup system when selecting a helper for a given layer.
  
  Specified by:
  
  isSupportedLayer in class InfoToolHelper
  
  Parameters:
  
  layer - the layer
  
  Returns:
  
  true is this helper can handle the layer
- getInfo
  
  public InfoToolResult getInfo(Position2D pos) throws Exception
  
  Description copied from class: InfoToolHelper
  
  Gets layer data at the specified position. If there are no feature data at the position, an empty InfoToolResult object is returned.
  
  Specified by:
  
  getInfo in class InfoToolHelper
  
  Parameters:
  
  pos - query position
  
  Returns:
  
  layer data
  
  Throws:
  
  Exception - on error querying the layer