content: package io.agora.kit.media.support;
  
  /*
   * Copyright (C) 2013 The Android Open Source Project
   *
   * 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.
   */
  
  import java.lang.annotation.Retention;
  import java.lang.annotation.Target;
  
  import static java.lang.annotation.ElementType.ANNOTATION_TYPE;
  import static java.lang.annotation.RetentionPolicy.SOURCE;
  
  /**
   * Denotes that the annotated element of integer type, represents
   * a logical type and that its value should be one of the explicitly
   * named constants. If the {@link #flag()} attribute is set to true,
   * multiple constants can be combined.
   * <p>
   * <pre><code>
   *  &#64;Retention(SOURCE)
   *  &#64;IntDef({NAVIGATION_MODE_STANDARD, NAVIGATION_MODE_LIST, NAVIGATION_MODE_TABS})
   *  public @interface NavigationMode {}
   *  public static final int NAVIGATION_MODE_STANDARD = 0;
   *  public static final int NAVIGATION_MODE_LIST = 1;
   *  public static final int NAVIGATION_MODE_TABS = 2;
   *  ...
   *  public abstract void setNavigationMode(@NavigationMode int mode);
   *  &#64;NavigationMode
   *  public abstract int getNavigationMode();
   * </code></pre>
   * For a flag, set the flag attribute:
   * <pre><code>
   *  &#64;IntDef(
   *      flag = true,
   *      value = {NAVIGATION_MODE_STANDARD, NAVIGATION_MODE_LIST, NAVIGATION_MODE_TABS})
   * </code></pre>
   *
   * @hide
   */
  @Retention(SOURCE)
  @Target({ANNOTATION_TYPE})
  public @interface IntDef {
      /**
       * Defines the constant prefix for this element
       */
      String[] prefix() default {};
  
      /**
       * Defines the constant suffix for this element
       */
      String[] suffix() default {};
  
      /**
       * Defines the allowed constants for this element
       */
      int[] value() default {};
  
      /**
       * Defines whether the constants can be used as a flag, or just as an enum (the default)
       */
      boolean flag() default false;
  }
  