66 lines
2.7 KiB
Java
66 lines
2.7 KiB
Java
/*
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Licensed to the Apache Software Foundation (ASF) under one
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or more contributor license agreements. See the NOTICE file
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing,
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software distributed under the License is distributed on an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the License for the
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specific language governing permissions and limitations
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under the License.
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*/
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package org.apache.cordova;
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import android.util.Pair;
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import android.util.SparseArray;
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/**
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* Provides a collection that maps unique request codes to CordovaPlugins and Integers.
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* Used to ensure that when plugins make requests for runtime permissions, those requests do not
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* collide with requests from other plugins that use the same request code value.
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*/
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public class CallbackMap {
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private int currentCallbackId = 0;
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private SparseArray<Pair<CordovaPlugin, Integer>> callbacks;
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public CallbackMap() {
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this.callbacks = new SparseArray<Pair<CordovaPlugin, Integer>>();
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}
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/**
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* Stores a CordovaPlugin and request code and returns a new unique request code to use
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* in a permission request.
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*
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* @param receiver The plugin that is making the request
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* @param requestCode The original request code used by the plugin
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* @return A unique request code that can be used to retrieve this callback
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* with getAndRemoveCallback()
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*/
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public synchronized int registerCallback(CordovaPlugin receiver, int requestCode) {
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int mappedId = this.currentCallbackId++;
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callbacks.put(mappedId, new Pair<CordovaPlugin, Integer>(receiver, requestCode));
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return mappedId;
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}
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/**
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* Retrieves and removes a callback stored in the map using the mapped request code
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* obtained from registerCallback()
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*
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* @param mappedId The request code obtained from registerCallback()
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* @return The CordovaPlugin and orignal request code that correspond to the
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* given mappedCode
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*/
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public synchronized Pair<CordovaPlugin, Integer> getAndRemoveCallback(int mappedId) {
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Pair<CordovaPlugin, Integer> callback = callbacks.get(mappedId);
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callbacks.remove(mappedId);
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return callback;
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}
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}
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