LabelCompositionStrategy (JOSM)

All Known Implementing Classes:

LabelCompositionStrategy.DeriveLabelFromNameTagsCompositionStrategy, LabelCompositionStrategy.StaticLabelCompositionStrategy, LabelCompositionStrategy.TagLookupCompositionStrategy

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface LabelCompositionStrategy
```
Provides an abstract parent class and three concrete sub classes for various strategies on how to compose the text label which can be rendered close to a node or within an area in an OSM map.

The three strategies below support three rules for composing a label:
- LabelCompositionStrategy.StaticLabelCompositionStrategy - the label is given by a static text specified in the MapCSS style file
- LabelCompositionStrategy.TagLookupCompositionStrategy - the label is given by the content of a tag whose name specified in the MapCSS style file
- LabelCompositionStrategy.DeriveLabelFromNameTagsCompositionStrategy - the label is given by the value of one of the configured "name tags". The list of relevant name tags can be configured in the JOSM preferences see the preference options mappaint.nameOrder and mappaint.nameComplementOrder.
Since:

3987 (creation), 10599 (functional interface)

Nested Class Summary

Nested Classes
Modifier and Type	Interface	Description
`static class`	`LabelCompositionStrategy.DeriveLabelFromNameTagsCompositionStrategy`	Strategy where the label is given by the value of one of the configured "name tags".
`static class`	`LabelCompositionStrategy.StaticLabelCompositionStrategy`	Strategy where the label is given by a static text specified in the MapCSS style file.
`static class`	`LabelCompositionStrategy.TagLookupCompositionStrategy`	Strategy where the label is given by the content of a tag whose name specified in the MapCSS style file.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.lang.String`	`compose(IPrimitive primitive)`	Replies the text value to be rendered as label for the primitive `primitive`.

- Method Detail
  - compose
```
java.lang.String compose(IPrimitive primitive)
```
    Replies the text value to be rendered as label for the primitive primitive.
    
    Parameters:
    
    primitive - the primitive
    
    Returns:
    
    the text value to be rendered or null, if primitive is null or if no suitable value could be composed