content: /*
   * Copyright (C) 2015 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.
   */
  
  package com.android.launcher3.util;
  
  import android.util.SparseArray;
  
  import java.util.Iterator;
  
  /**
   * Extension of {@link SparseArray} with some utility methods.
   */
  public class IntSparseArrayMap<E> extends SparseArray<E> implements Iterable<E> {
  
      public boolean containsKey(int key) {
          return indexOfKey(key) >= 0;
      }
  
      public boolean isEmpty() {
          return size() <= 0;
      }
  
      @Override
      public IntSparseArrayMap<E> clone() {
          return (IntSparseArrayMap<E>) super.clone();
      }
  
      @Override
      public Iterator<E> iterator() {
          return new ValueIterator();
      }
  
      @Thunk class ValueIterator implements Iterator<E> {
  
          private int mNextIndex = 0;
  
          @Override
          public boolean hasNext() {
              return mNextIndex < size();
          }
  
          @Override
          public E next() {
              return valueAt(mNextIndex ++);
          }
  
          @Override
          public void remove() {
              throw new UnsupportedOperationException();
          }
      }
  }
  