Github user jasongin commented on a diff in the pull request:
https://github.com/apache/cordova-android/pull/285#discussion_r57485105
--- Diff: framework/src/org/apache/cordova/CallbackMap.java ---
@@ -0,0 +1,65 @@
+/*
+ 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.cordova;
+
+import android.util.Pair;
+import android.util.SparseArray;
+
+/**
+ * Provides a collection that maps unique request codes to CordovaPlugins
and Integers.
+ * Used to ensure that when plugins make requests for runtime permissions,
those requests do not
+ * collide with requests from other plugins that use the same request code
value.
+ */
+public class CallbackMap {
+ private int currentCallbackId = 0;
+ private SparseArray<Pair<CordovaPlugin, Integer>> callbacks;
+
+ public CallbackMap() {
+ this.callbacks = new SparseArray<Pair<CordovaPlugin, Integer>>();
+ }
+
+ /**
+ * Stores a CordovaPlugin and request code and returns a new unique
request code to use
+ * in a permission request.
+ *
+ * @param receiver The plugin that is making the request
+ * @param requestCode The original request code used by the plugin
+ * @return A unique request code that can be used to
retrieve this callback
+ * with getAndRemoveCallback()
+ */
+ public int registerCallback(CordovaPlugin receiver, int requestCode) {
+ int mappedId = this.currentCallbackId++;
--- End diff --
Can this be called concurrently? If so, consider using
java.util.concurrent.atomic.AtomicInteger.
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