1d1a2694e9
Wasn't meant to be submitted.
Change-Id: Icc94daaf47ed85cefb59f20928241ef38d5ee2ca
(cherry picked from commit 17047d1939)
68 lines
2.5 KiB
Java
68 lines
2.5 KiB
Java
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* 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
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.overlay;
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import android.content.Context;
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import android.text.TextUtils;
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import android.util.Log;
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import com.android.settings.R;
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/**
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* Abstract class for creating feature controllers. Allows OEM implementations to define their own
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* factories with their own controllers containing whatever code is needed to implement
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* the features. To provide a factory implementation, implementors should override
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* {@link R.string#config_featureFactory} in their override.
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*/
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public abstract class FeatureFactory {
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private static final String LOG_TAG = "FeatureFactory";
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private static final boolean DEBUG = false;
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private static FeatureFactory sFactory;
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/**
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* Returns a factory for creating feature controllers. Creates the factory if it does not
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* already exist. Uses the value of {@link R.string#config_featureFactory} to instantiate
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* a factory implementation.
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*/
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public static FeatureFactory getFactory(Context context) {
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if (sFactory != null) {
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return sFactory;
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}
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if (DEBUG) Log.d(LOG_TAG, "getFactory");
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final String clsName = context.getString(R.string.config_featureFactory);
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if (TextUtils.isEmpty(clsName)) {
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throw new UnsupportedOperationException("No feature factory configured");
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}
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try {
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sFactory = (FeatureFactory) context.getClassLoader().loadClass(clsName).newInstance();
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} catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) {
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throw new FactoryNotFoundException(e);
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}
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if (DEBUG) Log.d(LOG_TAG, "started " + sFactory.getClass().getSimpleName());
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return sFactory;
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}
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public static final class FactoryNotFoundException extends RuntimeException {
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public FactoryNotFoundException(Throwable throwable) {
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super("Unable to create factory. Did you misconfigure Proguard?", throwable);
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}
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}
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}
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