1 /* 2 * Copyright (C) 2013 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 com.android.documentsui.prefs; 18 19 import static com.android.documentsui.base.State.MODE_UNKNOWN; 20 21 import android.annotation.IntDef; 22 import android.content.Context; 23 import android.content.SharedPreferences; 24 import android.preference.PreferenceManager; 25 26 import com.android.documentsui.base.RootInfo; 27 import com.android.documentsui.base.State.ViewMode; 28 29 import java.lang.annotation.Retention; 30 import java.lang.annotation.RetentionPolicy; 31 32 /** 33 * Methods for accessing the local preferences. 34 */ 35 public class LocalPreferences { 36 private static final String ROOT_VIEW_MODE_PREFIX = "rootViewMode-"; 37 38 public static @ViewMode int getViewMode(Context context, RootInfo root, 39 @ViewMode int fallback) { 40 return getPrefs(context).getInt(createKey(root), fallback); 41 } 42 43 public static void setViewMode(Context context, RootInfo root, @ViewMode int viewMode) { 44 assert(viewMode != MODE_UNKNOWN); 45 getPrefs(context).edit().putInt(createKey(root), viewMode).apply(); 46 } 47 48 private static SharedPreferences getPrefs(Context context) { 49 return PreferenceManager.getDefaultSharedPreferences(context); 50 } 51 52 private static String createKey(RootInfo root) { 53 return ROOT_VIEW_MODE_PREFIX + root.authority + root.rootId; 54 } 55 56 public static final int PERMISSION_ASK = 0; 57 public static final int PERMISSION_ASK_AGAIN = 1; 58 public static final int PERMISSION_NEVER_ASK = -1; 59 60 @IntDef(flag = true, value = { 61 PERMISSION_ASK, 62 PERMISSION_ASK_AGAIN, 63 PERMISSION_NEVER_ASK, 64 }) 65 @Retention(RetentionPolicy.SOURCE) 66 public @interface PermissionStatus {} 67 68 public static boolean shouldBackup(String s) { 69 return (s != null) ? s.startsWith(ROOT_VIEW_MODE_PREFIX) : false; 70 } 71 } 72
