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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.google.android.tv.partner.support;
import android.annotation.TargetApi;
import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.res.Resources;
import android.os.Build;
import android.util.Log;
import java.util.Arrays;
import java.util.List;
import java.util.Optional;
/**
* Abstract class for TV Customization support.
*
* <p>Implement customization resources as needed in a child class.
*/
@TargetApi(Build.VERSION_CODES.N)
@SuppressWarnings("AndroidApiChecker") // TODO(b/32513850) remove when error prone is updated
public class BaseCustomization {
private static final boolean DEBUG = false;
private static final String TAG = "BaseCustomization";
// TODO move common aosp library
// TODO cache resource if performance suffers.
private static final String RES_TYPE_BOOLEAN = "bool";
private final String packageName;
protected BaseCustomization(Context context, String[] permissions) {
packageName = getFirstPackageNameWithPermissions(context, permissions);
}
public final String getPackageName() {
return packageName;
}
private static String getFirstPackageNameWithPermissions(
Context context, String[] permissions) {
List<PackageInfo> packageInfos =
context.getPackageManager().getPackagesHoldingPermissions(permissions, 0);
if (DEBUG) {
Log.d(TAG, "These packages have " + Arrays.toString(permissions) + ": " + packageInfos);
}
return packageInfos == null || packageInfos.size() == 0
? ""
: packageInfos.get(0).packageName;
}
private static Resources getResourceForPackage(Context context, String packageName)
throws PackageManager.NameNotFoundException {
return context.getPackageManager().getResourcesForApplication(packageName);
}
public final Optional<Boolean> getBooleanResource(Context context, String resourceName) {
if (resourceName.isEmpty()) {
return Optional.empty();
}
try {
Resources res = getResourceForPackage(context, packageName);
int resId =
res == null
? 0
: res.getIdentifier(resourceName, RES_TYPE_BOOLEAN, packageName);
if (DEBUG) {
Log.d(TAG, "Boolean resource " + resourceName + " has " + resId);
}
return resId == 0 ? Optional.empty() : Optional.of(res.getBoolean(resId));
} catch (PackageManager.NameNotFoundException e) {
return Optional.empty();
}
}
}
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