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/*
* Copyright (C) 2017 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.systemui.statusbar.policy;
import android.content.Context;
import java.util.Map;
import java.util.function.Consumer;
import java.util.function.Supplier;
/**
* Utility class used to select between a plugin, tuner settings, and a default implementation
* of an interface.
*/
public interface ExtensionController {
<T> ExtensionBuilder<T> newExtension(Class<T> cls);
interface Extension<T> {
T get();
Context getContext();
void destroy();
void addCallback(Consumer<T> callback);
/**
* Triggers the extension to cycle through each of the sources again because something
* (like configuration) may have changed.
*/
T reload();
/**
* Null out the cached item for the purpose of memory saving, should only be done
* when any other references are already gotten.
* @param isDestroyed
*/
void clearItem(boolean isDestroyed);
}
interface ExtensionBuilder<T> {
ExtensionBuilder<T> withTunerFactory(TunerFactory<T> factory);
<P extends T> ExtensionBuilder<T> withPlugin(Class<P> cls);
<P extends T> ExtensionBuilder<T> withPlugin(Class<P> cls, String action);
<P> ExtensionBuilder<T> withPlugin(Class<P> cls, String action,
PluginConverter<T, P> converter);
ExtensionBuilder<T> withDefault(Supplier<T> def);
ExtensionBuilder<T> withCallback(Consumer<T> callback);
ExtensionBuilder<T> withUiMode(int mode, Supplier<T> def);
ExtensionBuilder<T> withFeature(String feature, Supplier<T> def);
Extension<T> build();
}
public interface PluginConverter<T, P> {
T getInterfaceFromPlugin(P plugin);
}
public interface TunerFactory<T> {
String[] keys();
T create(Map<String, String> settings);
}
}
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