content: /*
   * Created on Oct 27, 2008
   *
   * 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.
   *
   * Copyright @2008-2013 the original author or authors.
   */
  package org.fest.swing.edt;
  
  import static org.fest.swing.edt.GuiActionRunner.execute;
  import static org.fest.util.Preconditions.checkNotNull;
  
  import javax.annotation.Nonnull;
  import javax.annotation.Nullable;
  
  import org.fest.assertions.Description;
  import org.fest.swing.annotation.RunsInCurrentThread;
  
  /**
   * {@code Description} that loads its text lazily, in the event dispatch thread (EDT.)
   *
   * @author Alex Ruiz
   * @author Yvonne Wang
   */
  public abstract class GuiLazyLoadingDescription implements Description {
    /**
     * Executes {@link #loadDescription()} in the event dispatch thread (EDT.)
     *
     * @return the text loaded in the event dispatch thread (EDT.)
     */
    @Override
    public final @Nonnull String value() {
      String result = execute(new GuiQuery<String>() {
        @Override
        protected @Nullable String executeInEDT() {
          return loadDescription();
        }
      });
      return checkNotNull(result);
    }
  
    /**
     * <p>
     * Returns the lazy-loaded text of this description.
     * </p>
     *
     * <p>
     * <b>Note:</b> This method is accessed in the current executing thread. Such thread may or may not be the event
     * dispatch thread (EDT.) Client code must call this method from the EDT.
     * </p>
     *
     * @return the lazy-loaded text of this description.
     */
    @RunsInCurrentThread
    protected abstract @Nonnull String loadDescription();
  }
  