1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License 15 */ 16 17 package android.util; 18 19 import android.annotation.NonNull; 20 import android.content.res.Configuration; 21 import android.os.Parcel; 22 import android.os.Parcelable; 23 24 import java.io.PrintWriter; 25 26 /** 27 * Container that holds global and override config and their merge product. 28 * Merged configuration updates automatically whenever global or override configs are updated via 29 * setters. 30 * 31 * {@hide} 32 */ 33 public class MergedConfiguration implements Parcelable { 34 35 private Configuration mGlobalConfig = new Configuration(); 36 private Configuration mOverrideConfig = new Configuration(); 37 private Configuration mMergedConfig = new Configuration(); 38 39 public MergedConfiguration() { 40 } 41 42 public MergedConfiguration(Configuration globalConfig, Configuration overrideConfig) { 43 setConfiguration(globalConfig, overrideConfig); 44 } 45 46 public MergedConfiguration(Configuration globalConfig) { 47 setGlobalConfiguration(globalConfig); 48 } 49 50 public MergedConfiguration(MergedConfiguration mergedConfiguration) { 51 setConfiguration(mergedConfiguration.getGlobalConfiguration(), 52 mergedConfiguration.getOverrideConfiguration()); 53 } 54 55 private MergedConfiguration(Parcel in) { 56 readFromParcel(in); 57 } 58 59 @Override 60 public void writeToParcel(Parcel dest, int flags) { 61 dest.writeParcelable(mGlobalConfig, flags); 62 dest.writeParcelable(mOverrideConfig, flags); 63 dest.writeParcelable(mMergedConfig, flags); 64 } 65 66 public void readFromParcel(Parcel source) { 67 mGlobalConfig = source.readParcelable(Configuration.class.getClassLoader()); 68 mOverrideConfig = source.readParcelable(Configuration.class.getClassLoader()); 69 mMergedConfig = source.readParcelable(Configuration.class.getClassLoader()); 70 } 71 72 @Override 73 public int describeContents() { 74 return 0; 75 } 76 77 public static final Creator<MergedConfiguration> CREATOR = new Creator<MergedConfiguration>() { 78 @Override 79 public MergedConfiguration createFromParcel(Parcel in) { 80 return new MergedConfiguration(in); 81 } 82 83 @Override 84 public MergedConfiguration[] newArray(int size) { 85 return new MergedConfiguration[size]; 86 } 87 }; 88 89 /** 90 * Update global and override configurations. 91 * Merged configuration will automatically be updated. 92 * @param globalConfig New global configuration. 93 * @param overrideConfig New override configuration. 94 */ 95 public void setConfiguration(Configuration globalConfig, Configuration overrideConfig) { 96 mGlobalConfig.setTo(globalConfig); 97 mOverrideConfig.setTo(overrideConfig); 98 updateMergedConfig(); 99 } 100 101 /** 102 * Update global configurations. 103 * Merged configuration will automatically be updated. 104 * @param globalConfig New global configuration. 105 */ 106 public void setGlobalConfiguration(Configuration globalConfig) { 107 mGlobalConfig.setTo(globalConfig); 108 updateMergedConfig(); 109 } 110 111 /** 112 * Update override configurations. 113 * Merged configuration will automatically be updated. 114 * @param overrideConfig New override configuration. 115 */ 116 public void setOverrideConfiguration(Configuration overrideConfig) { 117 mOverrideConfig.setTo(overrideConfig); 118 updateMergedConfig(); 119 } 120 121 public void setTo(MergedConfiguration config) { 122 setConfiguration(config.mGlobalConfig, config.mOverrideConfig); 123 } 124 125 public void unset() { 126 mGlobalConfig.unset(); 127 mOverrideConfig.unset(); 128 updateMergedConfig(); 129 } 130 131 /** 132 * @return Stored global configuration value. 133 */ 134 @NonNull 135 public Configuration getGlobalConfiguration() { 136 return mGlobalConfig; 137 } 138 139 /** 140 * @return Stored override configuration value. 141 */ 142 public Configuration getOverrideConfiguration() { 143 return mOverrideConfig; 144 } 145 146 /** 147 * @return Stored merged configuration value. 148 */ 149 public Configuration getMergedConfiguration() { 150 return mMergedConfig; 151 } 152 153 /** Update merged config when global or override config changes. */ 154 private void updateMergedConfig() { 155 mMergedConfig.setTo(mGlobalConfig); 156 mMergedConfig.updateFrom(mOverrideConfig); 157 } 158 159 @Override 160 public String toString() { 161 return "{mGlobalConfig=" + mGlobalConfig + " mOverrideConfig=" + mOverrideConfig + "}"; 162 } 163 164 @Override 165 public int hashCode() { 166 return mMergedConfig.hashCode(); 167 } 168 169 @Override 170 public boolean equals(Object that) { 171 if (!(that instanceof MergedConfiguration)) { 172 return false; 173 } 174 175 if (that == this) return true; 176 return mMergedConfig.equals(((MergedConfiguration) that).mMergedConfig); 177 } 178 179 public void dump(PrintWriter pw, String prefix) { 180 pw.println(prefix + "mGlobalConfig=" + mGlobalConfig); 181 pw.println(prefix + "mOverrideConfig=" + mOverrideConfig); 182 } 183 } 184
