AvailableCommandsConverter.java

package org.springframework.roo.shell.converters;

import java.util.List;

import org.springframework.roo.shell.Completion;
import org.springframework.roo.shell.Converter;
import org.springframework.roo.shell.MethodTarget;
import org.springframework.roo.shell.SimpleParser;

/**
 * Available commands converter.
 * 
 * @author Ben Alex
 * @since 1.0
 */
public class AvailableCommandsConverter implements Converter<String> {

  public String convertFromText(final String text, final Class<?> requiredType,
      final String optionContext) {
    return text;
  }

  public boolean getAllPossibleValues(final List<Completion> completions,
      final Class<?> requiredType, final String existingData, final String optionContext,
      final MethodTarget target) {
    if (target.getTarget() instanceof SimpleParser) {
      final SimpleParser cmd = (SimpleParser) target.getTarget();

      // Only include the first word of each command
      for (final String s : cmd.getEveryCommand()) {
        if (s.contains(" ")) {
          completions.add(new Completion(s.substring(0, s.indexOf(" "))));
        } else {
          completions.add(new Completion(s));
        }
      }
    }
    return true;
  }

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