1 files changed, 67 insertions, 0 deletions
diff --git a/java/com/android/dialer/calllog/CallLogState.java b/java/com/android/dialer/calllog/CallLogState.java
new file mode 100644
index 000000000..bdb30a769
--- /dev/null
+++ b/java/com/android/dialer/calllog/CallLogState.java
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2018 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.calllog;
+
+import android.content.SharedPreferences;
+import android.support.annotation.AnyThread;
+import android.support.annotation.VisibleForTesting;
+import com.android.dialer.common.concurrent.Annotations.BackgroundExecutor;
+import com.android.dialer.storage.Unencrypted;
+import com.google.common.util.concurrent.ListenableFuture;
+import com.google.common.util.concurrent.ListeningExecutorService;
+import javax.annotation.concurrent.ThreadSafe;
+import javax.inject.Inject;
+
+/** Provides information about the state of the annotated call log. */
+@ThreadSafe
+public final class CallLogState {
+
+  private static final String ANNOTATED_CALL_LOG_BUILT_PREF = "annotated_call_log_built";
+
+  private final SharedPreferences sharedPreferences;
+  private final ListeningExecutorService backgroundExecutor;
+
+  @VisibleForTesting
+  @Inject
+  public CallLogState(
+      @Unencrypted SharedPreferences sharedPreferences,
+      @BackgroundExecutor ListeningExecutorService backgroundExecutor) {
+    this.sharedPreferences = sharedPreferences;
+    this.backgroundExecutor = backgroundExecutor;
+  }
+
+  /**
+   * Mark the call log as having been built. This is written to disk the first time the annotated
+   * call log has been built and shouldn't ever be reset unless the user clears data.
+   */
+  @AnyThread
+  public void markBuilt() {
+    sharedPreferences.edit().putBoolean(ANNOTATED_CALL_LOG_BUILT_PREF, true).apply();
+  }
+
+  /**
+   * Returns true if the annotated call log has been built at least once.
+   *
+   * <p>It may not yet have been built if the user was just upgraded to the new call log, or they
+   * just cleared data.
+   */
+  @AnyThread
+  public ListenableFuture<Boolean> isBuilt() {
+    return backgroundExecutor.submit(
+        () -> sharedPreferences.getBoolean(ANNOTATED_CALL_LOG_BUILT_PREF, false));
+  }
+}