Package org.jdesktop.swingx.renderer

Interface StringValue

All Superinterfaces:

Serializable

All Known Implementing Classes:

AbstractRenderer, DefaultListRenderer, DefaultTableRenderer, DefaultTreeRenderer, FormatStringValue, JXTree.DelegatingRenderer, LocalizableStringValue, MappedValue, MappedValues.MappedValueUIResource, StringValues.StringValueUIResource

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 StringValue
extends Serializable

A simple converter to return a String representation of an object. This class is intended to be the "small coin" to configure/format textual cell content of concrete subclasses of ComponentProvider.

F.i. to show a Contributor cell object as "Busywoman, Herta" implement a custom StringValue and use it in a text rendering provider.

 StringValue stringValue = (Object value) -> {
        if(value instanceof Contributor c) {
                return c.lastName + ", " + contributor.firstName;
        }
        return TO_STRING.getString(value);
 };
 
 ComponentProvider provider = new LabelProvider(stringValue);
 table.setDefaultRenderer(Contributor.class, new DefaultTableRenderer(provider));
 

PENDING: use a full-fledged Format instead? Would impose a higher burden onto implementors but could be re-used in editors.

Author:

Jeanette Winzenburg

See Also:

• ComponentProvider
• LabelProvider
• DefaultTableRenderer
• DefaultListRenderer
• DefaultTreeRenderer

Method Summary

Modifier and Type	Method	Description
String	getString(Object value)	Returns a string representation of the given value.

Method Details

getString

String getString(Object value)

Returns a string representation of the given value.

PENDING JW: forgot - why not null return guaranteed?

Parameters:

value - the object to present as a string

Returns:

a string representation of the given value, guaranteed to be not null