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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 android.util;
import android.annotation.NonNull;
import android.content.res.Configuration;
import android.os.Parcel;
import android.os.Parcelable;
/**
* Container that holds global and override config and their merge product.
* Merged configuration updates automatically whenever global or override configs are updated via
* setters.
*
* {@hide}
*/
public class MergedConfiguration implements Parcelable {
private Configuration mGlobalConfig = new Configuration();
private Configuration mOverrideConfig = new Configuration();
private Configuration mMergedConfig = new Configuration();
public MergedConfiguration() {
}
public MergedConfiguration(Configuration globalConfig, Configuration overrideConfig) {
setConfiguration(globalConfig, overrideConfig);
}
public MergedConfiguration(MergedConfiguration mergedConfiguration) {
setConfiguration(mergedConfiguration.getGlobalConfiguration(),
mergedConfiguration.getOverrideConfiguration());
}
private MergedConfiguration(Parcel in) {
readFromParcel(in);
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeParcelable(mGlobalConfig, flags);
dest.writeParcelable(mOverrideConfig, flags);
dest.writeParcelable(mMergedConfig, flags);
}
public void readFromParcel(Parcel source) {
mGlobalConfig = source.readParcelable(Configuration.class.getClassLoader());
mOverrideConfig = source.readParcelable(Configuration.class.getClassLoader());
mMergedConfig = source.readParcelable(Configuration.class.getClassLoader());
}
@Override
public int describeContents() {
return 0;
}
public static final Creator<MergedConfiguration> CREATOR = new Creator<MergedConfiguration>() {
@Override
public MergedConfiguration createFromParcel(Parcel in) {
return new MergedConfiguration(in);
}
@Override
public MergedConfiguration[] newArray(int size) {
return new MergedConfiguration[size];
}
};
/**
* Update global and override configurations.
* Merged configuration will automatically be updated.
* @param globalConfig New global configuration.
* @param overrideConfig New override configuration.
*/
public void setConfiguration(Configuration globalConfig, Configuration overrideConfig) {
mGlobalConfig.setTo(globalConfig);
mOverrideConfig.setTo(overrideConfig);
updateMergedConfig();
}
/**
* @return Stored global configuration value.
*/
@NonNull
public Configuration getGlobalConfiguration() {
return mGlobalConfig;
}
/**
* @return Stored override configuration value.
*/
public Configuration getOverrideConfiguration() {
return mOverrideConfig;
}
/**
* @return Stored merged configuration value.
*/
public Configuration getMergedConfiguration() {
return mMergedConfig;
}
/** Update merged config when global or override config changes. */
private void updateMergedConfig() {
mMergedConfig.setTo(mGlobalConfig);
mMergedConfig.updateFrom(mOverrideConfig);
}
}
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