/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed under the
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* License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*/
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package com.android.systemui.plugins;
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import android.util.ArrayMap;
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import com.android.systemui.Dependency;
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import com.android.systemui.plugins.PluginDependency.DependencyProvider;
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import com.android.systemui.shared.plugins.PluginManager;
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import javax.inject.Inject;
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import javax.inject.Singleton;
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/**
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*/
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@Singleton
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public class PluginDependencyProvider extends DependencyProvider {
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private final ArrayMap<Class<?>, Object> mDependencies = new ArrayMap<>();
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private final PluginManager mManager;
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/**
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*/
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@Inject
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public PluginDependencyProvider(PluginManager manager) {
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mManager = manager;
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PluginDependency.sProvider = this;
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}
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public <T> void allowPluginDependency(Class<T> cls) {
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allowPluginDependency(cls, Dependency.get(cls));
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}
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public <T> void allowPluginDependency(Class<T> cls, T obj) {
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synchronized (mDependencies) {
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mDependencies.put(cls, obj);
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}
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}
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@Override
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<T> T get(Plugin p, Class<T> cls) {
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if (!mManager.dependsOn(p, cls)) {
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throw new IllegalArgumentException(p.getClass() + " does not depend on " + cls);
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}
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synchronized (mDependencies) {
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if (!mDependencies.containsKey(cls)) {
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throw new IllegalArgumentException("Unknown dependency " + cls);
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}
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return (T) mDependencies.get(cls);
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}
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}
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}
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