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Diffstat (limited to 'src/com/android/launcher3/util/LongArrayMap.java')
-rw-r--r-- | src/com/android/launcher3/util/LongArrayMap.java | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/src/com/android/launcher3/util/LongArrayMap.java b/src/com/android/launcher3/util/LongArrayMap.java new file mode 100644 index 000000000..a337e85bd --- /dev/null +++ b/src/com/android/launcher3/util/LongArrayMap.java @@ -0,0 +1,65 @@ +/* + * 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.LongSparseArray; + +import java.util.Iterator; + +/** + * Extension of {@link LongSparseArray} with some utility methods. + */ +public class LongArrayMap<E> extends LongSparseArray<E> implements Iterable<E> { + + public boolean containsKey(long key) { + return indexOfKey(key) >= 0; + } + + public boolean isEmpty() { + return size() <= 0; + } + + @Override + public LongArrayMap<E> clone() { + return (LongArrayMap<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(); + } + } +} |