Java Doc for ILayer.java in  » GIS » udig-1.1 » net » refractions » udig » project » Java Source Code / Java DocumentationJava Source Code and Java Documentation

Note the default Label decorator makes use of a WORKING_HINT layer property.

getMap().getViewportModel() will return the ViewportModel.

Example implementation:

 for( IGeoResource resource : getGeoResources() ) {
 if (resource.canResolve(FeatureSource.class)) {
 return resource;
 }
 }
 return null;
 

In order for this value to be useful the layer should be selectable, often a single fid filter during user edit opperations.

Note: Filter.ALL indicates no selected Features.

The selected flag is used with respect to getFilter() :

• false : Query for layers contents
• true : Query for the layer's selected features

Convenience method

Note: examples of resources are: FeatureSource, WebMapServer, etc...

This schema can be used to determine the available attributes for use in Style Rule construction.

Example:

 if (layer.hasResource(FeatureSource.class)) {
 return handle.getResource(FeatureSource.class, monitor);
 }
 

Note: some layers may not ever be applicable for certaint toolsets.

Note the default Label decorator makes use of a WORKING_HINT layer property. The rendering process will clear this HINT when starting work, subsequence calls to setState( WORKING ) will cycle the to update the clock.

getMap().getViewportModel() will return the ViewportModel.

Example implementation:

 for( IGeoResource resource : getGeoResources() ) {
 if (resource.canResolve(FeatureSource.class)) {
 return resource;
 }
 }
 return null;
 

Note these values are not persisted, this can act as a blackboard for plugin collabaration. These properties are not saved and are reset when a map is opened.

Note: Please don't use this to work around limitations of our object model, instead send email and we can set up a long term solution.

In order for this value to be useful the layer should be selectable, often a single fid filter during user edit opperations.

Note: Filter.ALL indicates no selected Features. (All features are filtered out)

A tool may wish to record the previous Filter, before replacing (or adding to) this value.

Note we need to do the decorator exention on Layer to reflect status. Custom glyph - or null if none available.

Note these values are not persisted, this can act as a blackboard for plugin collabaration. These properties are not saved and are reset when a map is opened.

Note: Please don't use this to work around limitations of our object model, instead send email and we can set up a long term solution.

The selected flag is used with respect to getFilter() :

• false : Query for layers contents
• true : Query for the layer's selected features

Convenience method

Note: examples of resources are: FeatureSource, WebMapServer, etc... GeoResources are handles for real resources.

Example implementation:

 for( IGeoResource resource : getGeoResources() ) {
 if (resource.canResolve(FeatureSource.class)) {
 return resource;
 }
 }
 return null;
 

IMPORTANT: unlike using IGeoResource.resolve(ClassIProgressMonitor) ILayer.getResource(Class,IProgressMonitor) returns the same instance of the resource. The IGeoResource.resolve(ClassIProgressMonitor) method returns a new instance each time and therefore should NOT be used as a replacement for ILayer.getResource(Class,IProgressMonitor) .

This schema can be used to determine the available attributes for use in Style Rule construction. That is we will need to construct an "answer" for this query even if we just have a WMS layer.

This is similar to the following check:

 data = getResource();
 <b>return</b> data != null ? data.getSchema() : null;
 

This is used to provide feedback for a Layers rendering status.

This is used to provide feedback for a Layers rendering status.

This Blackboard is persisted, any modications made to the blackboard will result refresh of the effected layers.

Blackboard used for renderer collaboration.

Example:

 if (layer.hasResource(FeatureSource.class)) {
 return handle.getResource(FeatureSource.class, monitor);
 }
 

Note: some layers may not ever be applicable for certaint toolsets. Sometimes this is can be determined quickly from a layer property like "selectable" for the selection toolset. Other toolsets may need to perform a more detailed examination.

getMap().getViewportModel() will return the ViewportModel.

getMap().getViewportModel() will return the ViewportModel.