content: /*
   * JBoss, Home of Professional Open Source
   * Copyright 2014 Red Hat Inc. and/or its affiliates and other contributors
   * as indicated by the @authors tag. All rights reserved.
   * See the copyright.txt in the distribution for a
   * full listing of individual contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.aesh.command.impl.completer;
  
  import org.aesh.command.completer.CompleterInvocation;
  import org.aesh.command.completer.OptionCompleter;
  import org.aesh.readline.util.Parser;
  
  import java.util.List;
  
  /**
   * @author <a href="mailto:stale.pedersen@jboss.org">Ståle W. Pedersen</a>
   */
  public class DefaultValueOptionCompleter implements OptionCompleter<CompleterInvocation> {
  
      private final List<String> defaultValues;
  
      public DefaultValueOptionCompleter(List<String> defaultValues) {
          this.defaultValues = defaultValues;
      }
  
      @Override
      public void complete(CompleterInvocation completerData) {
          completeDataWithoutValues(completerData);
          completeDataWithValues(completerData);
      }
  
      private void completeDataWithoutValues(CompleterInvocation completerData) {
          if(completerData.getGivenCompleteValue() == null ||
                  completerData.getGivenCompleteValue().length() == 0) {
              completerData.addAllCompleterValues(defaultValues);
              return;
          }
  
          for(String value : defaultValues) {
              if(value.startsWith(completerData.getGivenCompleteValue())) {
                  completerData.addCompleterValue(value);
              }
          }
      }
  
      private void completeDataWithValues(CompleterInvocation completerData) {
          if(completerData.getCompleterValues().size() == 1 &&
                  completerData.getCompleterValues().get(0).containSpaces()) {
              String tmpData = Parser.switchSpacesToEscapedSpacesInWord(
                      completerData.getCompleterValues().get(0).getCharacters());
              completerData.clearCompleterValues();
              completerData.addCompleterValue(tmpData);
              completerData.setAppendSpace(true);
          }
      }
  }
  