content: /**
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.apache.weex.bridge;
  
  import android.util.SparseArray;
  
  /**
   * Manage async callbacks which waiting for the result of executing javascript
   */
  /* default */ class ResultCallbackManager {
      // Unique id for callback after executing js
      private static long sCallbackId = 0;
      // Map for save callbacks, key is id
      private static SparseArray<ResultCallback> mResultCallbacks = new SparseArray<>();
  
      // Generate unique id
      static long generateCallbackId(ResultCallback callback) {
          if (sCallbackId >= Integer.MAX_VALUE) {
              sCallbackId = 0;
          }
          int id = (int) sCallbackId++;
          mResultCallbacks.put(id, callback);
          return id;
      }
  
      // Remove id from callback map
      static ResultCallback removeCallbackById(long id) {
          ResultCallback callback = mResultCallbacks.get((int) id);
          mResultCallbacks.remove((int) id);
          return callback;
      }
  }
  