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Java Source Code / Java Documentation » GIS » udig 1.1 » net.refractions.udig.project.internal

Source Cross Reference

Class Diagram

Java Document (Java Doc)

net.refractions.udig.project.internal .StyleBlackboard

All known Subclasses:   net.refractions.udig.project.internal.impl .StyleBlackboardImpl,
StyleBlackboard
public interface StyleBlackboard extends EObject,IStyleBlackboard,Cloneable(Code)
Provides persistence, storage for Style information and shared collaboration between renderers and the user.
author:
   Richard Gould
since:
   0.6.0

Field Summary
String copyright


Method Summary
Object clone()
     Creates a clone of the blackboard.
boolean contains(String styleId)
     Convenience method for testing for the existance of a style.
Parameters:
  styleId - A well known String constant identifying the style agreed upon by the Rendererand the StyleConfigurator.
Object get(String styleId)
     Retreives the style value by the styleId.
Parameters:
  styleId - A well known String constant identifying the style agreed upon by the Rendererand the StyleConfigurator.
List<StyleEntry> getContent()
     List of Style information.
Object lookup(Class theClass)
     Retreives the style value by the class of the style object.
void put(String styleId, Object style)
     Places a style onto the blackboard.
Parameters:
  styleId - A well known String constant identifying the style agreed upon by the Rendererand the StyleConfigurator.
void put(URL url, IProgressMonitor monitor)
     Loads a style from a URL pointing to a resource.
Object remove(String styleId)
     Removes the style value identified by styleId from the blackboard.
void setSelected(String[] ids)
     Sets the styles indicated by the ids to be selected.

Field Detail
copyright
String copyright(Code)

Method Detail
clone
Object clone()(Code)
Creates a clone of the blackboard. A clone of the blackboard.

contains
boolean contains(String styleId)(Code)
Convenience method for testing for the existance of a style.
Parameters:
  styleId - A well known String constant identifying the style agreed upon by the Rendererand the StyleConfigurator. true if the style extists, otherwise false.

get
Object get(String styleId)(Code)
Retreives the style value by the styleId.
Parameters:
  styleId - A well known String constant identifying the style agreed upon by the Rendererand the StyleConfigurator. The requested style object or null if it does not exist

getContent
List<StyleEntry> getContent()(Code)
List of Style information.
Note: This list should not be accessed by client code - it is for use by the EMF model. Please use the lookup methods provided.

lookup
Object lookup(Class theClass)(Code)
Retreives the style value by the class of the style object. Returns the first object that meets the criteria.
Parameters:
  theClass - A superclass of the class of the style object. The requested style object or null if it does not exist

put
void put(String styleId, Object style)(Code)
Places a style onto the blackboard.
Parameters:
  styleId - A well known String constant identifying the style agreed upon by the Rendererand the StyleConfigurator. Since the id is assumed to be unique, if a style entryalready exists with the specified id, it should be overwritten.
Parameters:
  style - An object containing all the styling information.

put
void put(URL url, IProgressMonitor monitor) throws IOException(Code)
Loads a style from a URL pointing to a resource. This method blocks.
Parameters:
  url - the URL pointing to the style.
Parameters:
  monitor - A progress monitor. Allowed to be null.
throws:
  IOException - if there is an error getting the style.

remove
Object remove(String styleId)(Code)
Removes the style value identified by styleId from the blackboard. FIXME: Can we reduce this to put( styleId, null ) ?
Parameters:
  styleId - A well known String constant identifying the style agreed upon by the Rendererand the StyleConfigurator. The style object removed from the blackboard, or null if no such entry exists.

setSelected
void setSelected(String[] ids)(Code)
Sets the styles indicated by the ids to be selected.
Selected styles are those that were selected/created by the user rather than the framework

Example:
A layer has WMS and WFS IGeoResource s so either a FeatureRenderer or a WMSRenderer could render the layer.

In the case where the wms allows the SLD to be retrieved the WMS StyleConfigurator could add both the named style to the blackboard as well as the SLD style to the blackboard. It could set both as selected because both the WMSRenderer and the FeatureRenderer would render the same image.

However if the user enters a SLD style (assuming the WMS does not accept SLD POST) only the SLD style would be set to selected

By using selection the choice of renderer used is affected towards the selected style

Parameters:
  ids -

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