/*
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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.statusbar.policy;
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import android.content.Context;
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import java.util.Map;
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import java.util.function.Consumer;
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import java.util.function.Supplier;
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/**
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* Utility class used to select between a plugin, tuner settings, and a default implementation
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* of an interface.
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*/
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public interface ExtensionController {
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<T> ExtensionBuilder<T> newExtension(Class<T> cls);
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interface Extension<T> {
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T get();
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Context getContext();
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void destroy();
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void addCallback(Consumer<T> callback);
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/**
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* Triggers the extension to cycle through each of the sources again because something
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* (like configuration) may have changed.
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*/
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T reload();
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/**
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* Null out the cached item for the purpose of memory saving, should only be done
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* when any other references are already gotten.
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* @param isDestroyed
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*/
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void clearItem(boolean isDestroyed);
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}
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interface ExtensionBuilder<T> {
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ExtensionBuilder<T> withTunerFactory(TunerFactory<T> factory);
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<P extends T> ExtensionBuilder<T> withPlugin(Class<P> cls);
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<P extends T> ExtensionBuilder<T> withPlugin(Class<P> cls, String action);
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<P> ExtensionBuilder<T> withPlugin(Class<P> cls, String action,
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PluginConverter<T, P> converter);
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ExtensionBuilder<T> withDefault(Supplier<T> def);
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ExtensionBuilder<T> withCallback(Consumer<T> callback);
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ExtensionBuilder<T> withUiMode(int mode, Supplier<T> def);
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ExtensionBuilder<T> withFeature(String feature, Supplier<T> def);
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Extension build();
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}
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public interface PluginConverter<T, P> {
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T getInterfaceFromPlugin(P plugin);
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}
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public interface TunerFactory<T> {
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String[] keys();
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T create(Map<String, String> settings);
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}
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}
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