/*
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* Copyright (C) 2018 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.launcher3.util;
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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 java.lang.reflect.InvocationTargetException;
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/**
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* An interface to indicate that a class is dynamically loaded using resource overlay, hence its
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* class name and constructor should be preserved by proguard
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*/
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public interface ResourceBasedOverride {
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class Overrides {
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private static final String TAG = "Overrides";
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public static <T extends ResourceBasedOverride> T getObject(
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Class<T> clazz, Context context, int resId) {
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String className = context.getString(resId);
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if (!TextUtils.isEmpty(className)) {
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try {
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Class<?> cls = Class.forName(className);
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return (T) cls.getDeclaredConstructor(Context.class).newInstance(context);
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} catch (ClassNotFoundException | InstantiationException | IllegalAccessException
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| ClassCastException | NoSuchMethodException | InvocationTargetException e) {
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Log.e(TAG, "Bad overriden class", e);
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}
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}
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try {
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return clazz.newInstance();
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} catch (InstantiationException|IllegalAccessException e) {
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throw new RuntimeException(e);
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}
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}
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}
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}
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