Update Dialer source to latest internal Google revision.

Previously, Android's Dialer app was developed in an internal Google
source control system and only exported to public during AOSP drops.

The Dialer team is now switching to a public development model similar
to the telephony team.

This CL represents all internal Google changes that were committed to
Dialer between the public O release and today's tip of tree on internal
master. This CL squashes those changes into a single commit.
In subsequent changes, changes will be exported on a per-commit basis.

Test: make, flash install, run
Merged-In: I45270eaa8ce732d71a1bd84b08c7fa0e99af3160
Change-Id: I529aaeb88535b9533c0ae4ef4e6c1222d4e0f1c8
PiperOrigin-RevId: 167068436

1 files changed, 120 insertions, 0 deletions

diff --git a/java/com/android/dialer/configprovider/SharedPrefConfigProvider.java b/java/com/android/dialer/configprovider/SharedPrefConfigProvider.java
new file mode 100644
index 000000000..6ee469572
--- /dev/null
+++ b/java/com/android/dialer/configprovider/SharedPrefConfigProvider.java
@@ -0,0 +1,120 @@
+/*
+ * 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 com.android.dialer.configprovider;
+
+import android.app.IntentService;
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.content.SharedPreferences.Editor;
+import android.support.annotation.Nullable;
+import com.android.dialer.common.Assert;
+import com.android.dialer.common.LogUtil;
+import com.android.dialer.inject.ApplicationContext;
+import com.android.dialer.strictmode.DialerStrictMode;
+import com.android.dialer.util.DialerUtils;
+import javax.inject.Inject;
+
+/**
+ * {@link ConfigProvider} which uses a shared preferences file.
+ *
+ * <p>Config flags can be written using adb (with root access), for example:
+ *
+ * <pre>
+ *   adb root
+ *   adb shell am startservice -n \
+ *     'com.android.dialer/.configprovider.SharedPrefConfigProvider\$Service' \
+ *     --ez boolean_flag_name flag_value
+ * </pre>
+ *
+ * <p>(For longs use --el and for strings use --es.)
+ *
+ * <p>Flags can be viewed with:
+ *
+ * <pre>
+ *   adb shell cat \
+ *     /data/user_de/0/com.android.dialer/shared_prefs/com.android.dialer_preferences.xml
+ * </pre>
+ */
+class SharedPrefConfigProvider implements ConfigProvider {
+  private static final String PREF_PREFIX = "config_provider_prefs_";
+
+  private final Context appContext;
+
+  @Inject
+  SharedPrefConfigProvider(@ApplicationContext Context appContext) {
+    this.appContext = appContext;
+  }
+
+  /** Service to write values into {@link SharedPrefConfigProvider} using adb. */
+  public static class Service extends IntentService {
+
+    public Service() {
+      super("SharedPrefConfigProvider.Service");
+    }
+
+    @Override
+    protected void onHandleIntent(@Nullable Intent intent) {
+      if (intent == null || intent.getExtras() == null || intent.getExtras().size() != 1) {
+        LogUtil.w("SharedPrefConfigProvider.Service.onHandleIntent", "must set exactly one extra");
+        return;
+      }
+      String key = intent.getExtras().keySet().iterator().next();
+      Object value = intent.getExtras().get(key);
+      put(key, value);
+    }
+
+    private void put(String key, Object value) {
+      Editor editor = getSharedPrefs(getApplicationContext()).edit();
+      String prefixedKey = PREF_PREFIX + key;
+      if (value instanceof Boolean) {
+        editor.putBoolean(prefixedKey, (Boolean) value);
+      } else if (value instanceof Long) {
+        editor.putLong(prefixedKey, (Long) value);
+      } else if (value instanceof String) {
+        editor.putString(prefixedKey, (String) value);
+      } else {
+        throw Assert.createAssertionFailException("unsupported extra type: " + value.getClass());
+      }
+      editor.apply();
+    }
+  }
+
+  @Override
+  public String getString(String key, String defaultValue) {
+    // Reading shared prefs on the main thread is generally safe since a single instance is cached.
+    return DialerStrictMode.bypass(
+        () -> getSharedPrefs(appContext).getString(PREF_PREFIX + key, defaultValue));
+  }
+
+  @Override
+  public long getLong(String key, long defaultValue) {
+    // Reading shared prefs on the main thread is generally safe since a single instance is cached.
+    return DialerStrictMode.bypass(
+        () -> getSharedPrefs(appContext).getLong(PREF_PREFIX + key, defaultValue));
+  }
+
+  @Override
+  public boolean getBoolean(String key, boolean defaultValue) {
+    // Reading shared prefs on the main thread is generally safe since a single instance is cached.
+    return DialerStrictMode.bypass(
+        () -> getSharedPrefs(appContext).getBoolean(PREF_PREFIX + key, defaultValue));
+  }
+
+  private static SharedPreferences getSharedPrefs(Context appContext) {
+    return DialerUtils.getDefaultSharedPreferenceForDeviceProtectedStorageContext(appContext);
+  }
+}