PgpKeyIdConverter.java

package org.springframework.roo.felix.pgp;

import java.util.List;

import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.Service;
import org.springframework.roo.shell.Completion;
import org.springframework.roo.shell.Converter;
import org.springframework.roo.shell.MethodTarget;

/**
 * {@link Converter} for {@link PgpKeyId}.
 * 
 * @author Ben Alex
 * @since 1.1
 */
@Component
@Service
public class PgpKeyIdConverter implements Converter<PgpKeyId> {

  @Reference
  private PgpService pgpService;

  public PgpKeyId convertFromText(final String value, final Class<?> requiredType,
      final String optionContext) {
    return new PgpKeyId(value.trim());
  }

  public boolean getAllPossibleValues(final List<Completion> completions,
      final Class<?> requiredType, final String originalUserInput, final String optionContext,
      final MethodTarget target) {
    for (final PgpKeyId candidate : pgpService.getDiscoveredKeyIds()) {
      final String id = candidate.getId();
      if (id.toUpperCase().startsWith(originalUserInput.toUpperCase())) {
        completions.add(new Completion(id));
      }
    }

    return false;
  }

  public boolean supports(final Class<?> requiredType, final String optionContext) {
    return PgpKeyId.class.isAssignableFrom(requiredType);
  }
}