1 files changed, 71 insertions, 0 deletions
diff --git a/src/com/android/dialer/compat/UserManagerCompat.java b/src/com/android/dialer/compat/UserManagerCompat.java
new file mode 100644
index 000000000..576703364
--- /dev/null
+++ b/src/com/android/dialer/compat/UserManagerCompat.java
@@ -0,0 +1,71 @@
+/*
+ * 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.dialer.compat;
+
+import android.content.Context;
+import android.os.Process;
+import android.os.UserHandle;
+import android.os.UserManager;
+
+import com.android.contacts.common.compat.CompatUtils;
+
+/**
+ * Compatibility class for {@link UserManager}.
+ */
+public class UserManagerCompat {
+    /**
+     * A user id constant to indicate the "system" user of the device. Copied from
+     * {@link UserHandle}.
+     */
+    private static final int USER_SYSTEM = 0;
+    /**
+     * Range of uids allocated for a user.
+     */
+    private static final int PER_USER_RANGE = 100000;
+
+    /**
+     * Used to check if this process is running under the system user. The system user is the
+     * initial user that is implicitly created on first boot and hosts most of the system services.
+     *
+     * @return whether this process is running under the system user.
+     */
+    public static boolean isSystemUser(UserManager userManager) {
+        if (CompatUtils.isMarshmallowCompatible()) {
+            return userManager.isSystemUser();
+        }
+        // Adapted from {@link UserManager} and {@link UserHandle}.
+        return (Process.myUid() / PER_USER_RANGE) == USER_SYSTEM;
+    }
+
+    /**
+     * Return whether the calling user is running in an "unlocked" state. A user
+     * is unlocked only after they've entered their credentials (such as a lock
+     * pattern or PIN), and credential-encrypted private app data storage is
+     * available.
+     *
+     * TODO b/26688153
+     *
+     * @param context the current context
+     * @return {@code true} if the user is unlocked, {@code false} otherwise
+     * @throws NullPointerException if context is null
+     */
+    public static boolean isUserUnlocked(Context context) {
+        if (CompatUtils.isNCompatible()) {
+            return UserManagerSdkCompat.isUserUnlocked(context);
+        }
+        return true;
+    }
+}