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A mocked implementation for GWT-2.5.1 that can run in the JVM to allow integration testing

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/*
 * Copyright 2008 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.resources.client;

/**
 * Identical to {@link TextResource}, except the contents of the resource are
 * not inlined into the compiled output. This is suitable for resources that are
 * not required as part of program initialization.
 */
public interface ExternalTextResource extends ResourcePrototype {

  /**
   * Fetches a {@link TextResource} and calls {@code callback} with the result.
   * 
   * Caches after the first result, so {@code callback} is invoked immediately for subsequent
   * invocations.
   * 
   * @throws ResourceException if the resource request cannot be initiated, e.g. due to an invalid
   *           url or an AJAX security error (same origin violation)
   */
  void getText(ResourceCallback callback) throws ResourceException;

}