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-rw-r--r--src/com/android/launcher3/util/LongArrayMap.java65
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
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+++ b/src/com/android/launcher3/util/LongArrayMap.java
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+/*
+ * 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();
+ }
+ }
+}