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Vaadin is a web application framework for Rich Internet Applications (RIA). Vaadin enables easy development and maintenance of fast and secure rich web applications with a stunning look and feel and a wide browser support. It features a server-side architecture with the majority of the logic running on the server. Ajax technology is used at the browser-side to ensure a rich and interactive user experience.

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/*
 * Copyright 2006 Google Inc.
 *
 * 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 com.google.gwt.util.tools;

import java.io.File;

/**
 * Argument handler for arguments that are directories.
 */
public abstract class ArgHandlerFile extends ArgHandler {

  @Override
  public String[] getDefaultArgs() {
    return null;
  }

  @Override
  public String[] getTagArgs() {
    return new String[]{"file"};
  }

  @Override
  public int handle(String[] args, int startIndex) {
    if (startIndex + 1 < args.length) {
      setFile(new File(args[startIndex + 1]));
      return 1;
    }

    System.err.println(getTag()
      + " should be followed by the name of a file");
    return -1;
  }

  public abstract void setFile(File file);

}