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/*
* Copyright (C) 2015 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.tv.common.feature;
import android.content.Context;
import com.android.tv.common.util.CommonUtils;
import java.util.Arrays;
/** Static utilities for features. */
public class FeatureUtils {
/**
* Returns a feature that is enabled if any of {@code features} is enabled.
*
* @param features the features to or
*/
public static Feature or(final Feature... features) {
return new Feature() {
@Override
public boolean isEnabled(Context context) {
for (Feature f : features) {
if (f.isEnabled(context)) {
return true;
}
}
return false;
}
@Override
public String toString() {
return "or(" + Arrays.asList(features) + ")";
}
};
}
/**
* Returns a feature that is enabled if all of {@code features} is enabled.
*
* @param features the features to and
*/
public static Feature and(final Feature... features) {
return new Feature() {
@Override
public boolean isEnabled(Context context) {
for (Feature f : features) {
if (!f.isEnabled(context)) {
return false;
}
}
return true;
}
@Override
public String toString() {
return "and(" + Arrays.asList(features) + ")";
}
};
}
/**
* Returns a feature that is opposite of the given {@code feature}.
*
* @param feature the feature to invert
*/
public static Feature not(final Feature feature) {
return new Feature() {
@Override
public boolean isEnabled(Context context) {
return !feature.isEnabled(context);
}
@Override
public String toString() {
return "not(" + feature + ")";
}
};
}
/** A feature that is always enabled. */
public static final Feature ON =
new Feature() {
@Override
public boolean isEnabled(Context context) {
return true;
}
@Override
public String toString() {
return "on";
}
};
/** A feature that is always disabled. */
public static final Feature OFF =
new Feature() {
@Override
public boolean isEnabled(Context context) {
return false;
}
@Override
public String toString() {
return "off";
}
};
/** True if running in robolectric. */
public static final Feature ROBOLECTRIC =
new Feature() {
@Override
public boolean isEnabled(Context context) {
return CommonUtils.isRoboTest();
}
@Override
public String toString() {
return "isRobolecteric";
}
};
private FeatureUtils() {}
}
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