Add Accounts & privacy settings in LatinIME

Also start showing the logging preference on this screen too.

This settings screen will be the container for all account
management, sync and privacy related settings

Bug: 17464068
Change-Id: Ie0806f6e8a542e9dea2834445ff7b38805207bda

java/res/values/strings.xml

@@ -38,6 +38,8 @@
 
     <!-- Settings screen title for preferences [CHAR LIMIT=33]-->
     <string name="settings_screen_preferences">Preferences</string>
+    <!-- Settings screen title for accounts and privacy preferences [CHAR LIMIT=33]-->
+    <string name="settings_screen_accounts">Accounts &amp; privacy</string>
     <!-- Settings screen title for appearance & layouts preferences [CHAR LIMIT=33] -->
     <string name="settings_screen_appearance">Appearance &amp; layouts</string>
     <!-- Settings screen title for multilingual options [CHAR_LIMIT=33] -->
@@ -177,6 +179,17 @@
     <!-- Title of the item to change the keyboard theme [CHAR LIMIT=20]-->
     <string name="keyboard_layout">Keyboard theme</string>
 
+    <!-- Title of the preference item for switching accounts [CHAR LIMIT=30] -->
+    <string name="switch_accounts">Switch accounts</string>
+
+    <!-- Summary of the preference item for switching accounts when no accounts
+         are selected [CHAR LIMIT=65] -->
+    <string name="no_accounts_selected">No accounts selected</string>
+
+    <!-- Summary of the preference item for switching accounts when an account
+         is selected [CHAR LIMIT=65] -->
+    <string name="account_selected">Currently using <xliff:g id="EMAIL_ADDRESS" example="someone@example.com">%1$s</xliff:g></string>
+
     <!-- Description for English (UK) keyboard subtype [CHAR LIMIT=25]
          (UK) should be an abbreviation of United Kingdom to fit in the CHAR LIMIT. -->
     <string name="subtype_en_GB">English (UK)</string>

java/res/xml/prefs.xml

@@ -22,6 +22,10 @@
         android:fragment="com.android.inputmethod.latin.settings.PreferencesSettingsFragment"
         android:title="@string/settings_screen_preferences"
         android:key="screen_preferences" />
+    <PreferenceScreen
+        android:fragment="com.android.inputmethod.latin.settings.AccountsSettingsFragment"
+        android:title="@string/settings_screen_accounts"
+        android:key="screen_accounts" />
     <PreferenceScreen
         android:fragment="com.android.inputmethod.latin.settings.AppearanceSettingsFragment"
         android:title="@string/settings_screen_appearance"

java/res/xml/prefs_screen_accounts.xml

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2014 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.
+-->
+
+<PreferenceScreen
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
+    android:title="@string/settings_screen_accounts">
+
+    <!-- This preference is a dummy view of the underlying preference.
+         This isn't persisted and the summary/title is refreshed by the fragment
+         after inspecting the underlying account preference. -->
+    <Preference
+        android:key="account_switcher"
+        android:persistent="false"
+        android:title="@string/switch_accounts"
+        android:summary="@string/no_accounts_selected" />
+
+    <!-- title will be set programmatically to embed application name -->
+    <CheckBoxPreference
+        android:key="pref_enable_metrics_logging"
+        android:summary="@string/enable_metrics_logging_summary"
+        android:defaultValue="true"
+        android:persistent="true" />
+</PreferenceScreen>

java/src/com/android/inputmethod/latin/settings/AccountsSettingsFragment.java

@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2014 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.inputmethod.latin.settings;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.content.res.Resources;
+import android.os.Bundle;
+import android.preference.Preference;
+
+import com.android.inputmethod.latin.R;
+import com.android.inputmethod.latin.SubtypeSwitcher;
+import com.android.inputmethod.latin.define.ProductionFlags;
+
+/**
+ * "Accounts & Privacy" settings sub screen.
+ *
+ * This settings sub screen handles the following preferences:
+ * - TODO: Account selection/management for IME
+ * - TODO: Sync preferences
+ * - TODO: Privacy preferences
+ */
+public final class AccountsSettingsFragment extends SubScreenFragment {
+    @Override
+    public void onCreate(final Bundle icicle) {
+        super.onCreate(icicle);
+        addPreferencesFromResource(R.xml.prefs_screen_accounts);
+
+        final Resources res = getResources();
+        final Context context = getActivity();
+
+        // When we are called from the Settings application but we are not already running, some
+        // singleton and utility classes may not have been initialized.  We have to call
+        // initialization method of these classes here. See {@link LatinIME#onCreate()}.
+        SubtypeSwitcher.init(context);
+
+        if (ProductionFlags.IS_METRICS_LOGGING_SUPPORTED) {
+            final Preference enableMetricsLogging =
+                    findPreference(Settings.PREF_ENABLE_METRICS_LOGGING);
+            if (enableMetricsLogging != null) {
+                final String enableMetricsLoggingTitle = res.getString(
+                        R.string.enable_metrics_logging, getApplicationName());
+                enableMetricsLogging.setTitle(enableMetricsLoggingTitle);
+            }
+        } else {
+            removePreference(Settings.PREF_ENABLE_METRICS_LOGGING);
+        }
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        refreshAccountSelection();
+    }
+
+    @Override
+    public void onSharedPreferenceChanged(final SharedPreferences prefs, final String key) {
+        // TODO: Look at the preference that changed before refreshing the view.
+        refreshAccountSelection();
+    }
+
+    private void refreshAccountSelection() {
+        // TODO: Fetch the currently selected account.
+        // Set the summary for the account preference.
+        // Depending on the account selection, enable/disable preferences that
+        // depend on an account.
+    }
+}

java/src/com/android/inputmethod/latin/settings/AdvancedSettingsFragment.java

@@ -93,14 +93,16 @@ public final class AdvancedSettingsFragment extends SubScreenFragment {
             removePreference(Settings.PREF_SHOW_SETUP_WIZARD_ICON);
         }
 
+        // If metrics logging isn't supported, or account sign in is enabled
+        // don't show the logging preference.
+        // TODO: Eventually when we enable account sign in by default,
+        // we'll remove logging preference from here.
         if (ProductionFlags.IS_METRICS_LOGGING_SUPPORTED) {
             final Preference enableMetricsLogging =
                     findPreference(Settings.PREF_ENABLE_METRICS_LOGGING);
             if (enableMetricsLogging != null) {
-                final int applicationLabelRes = context.getApplicationInfo().labelRes;
-                final String applicationName = res.getString(applicationLabelRes);
                 final String enableMetricsLoggingTitle = res.getString(
-                        R.string.enable_metrics_logging, applicationName);
+                        R.string.enable_metrics_logging, getApplicationName());
                 enableMetricsLogging.setTitle(enableMetricsLoggingTitle);
             }
         } else {

java/src/com/android/inputmethod/latin/settings/Settings.java

@@ -43,6 +43,7 @@ public final class Settings implements SharedPreferences.OnSharedPreferenceChang
     private static final String TAG = Settings.class.getSimpleName();
     // Settings screens
     public static final String SCREEN_PREFERENCES = "screen_preferences";
+    public static final String SCREEN_ACCOUNTS = "screen_accounts";
     public static final String SCREEN_APPEARANCE = "screen_appearance";
     public static final String SCREEN_THEME = "screen_theme";
     public static final String SCREEN_MULTILINGUAL = "screen_multilingual";
@@ -104,6 +105,7 @@ public final class Settings implements SharedPreferences.OnSharedPreferenceChang
     public static final String PREF_KEY_IS_INTERNAL = "pref_key_is_internal";
 
     public static final String PREF_ENABLE_METRICS_LOGGING = "pref_enable_metrics_logging";
+    public static final String PREF_ACCOUNT_NAME = "pref_account_name";
 
     // This preference key is deprecated. Use {@link #PREF_SHOW_LANGUAGE_SWITCH_KEY} instead.
     // This is being used only for the backward compatibility.

java/src/com/android/inputmethod/latin/settings/SettingsFragment.java

@@ -25,6 +25,7 @@ import android.view.MenuInflater;
 import android.view.MenuItem;
 
 import com.android.inputmethod.latin.R;
+import com.android.inputmethod.latin.define.ProductionFlags;
 import com.android.inputmethod.latin.utils.ApplicationUtils;
 import com.android.inputmethod.latin.utils.FeedbackUtils;
 import com.android.inputmethodcommon.InputMethodSettingsFragment;
@@ -51,6 +52,10 @@ public final class SettingsFragment extends InputMethodSettingsFragment {
             final Preference multilingualOptions = findPreference(Settings.SCREEN_MULTILINGUAL);
             preferenceScreen.removePreference(multilingualOptions);
         }
+        if (!ProductionFlags.ENABLE_ACCOUNT_SIGN_IN) {
+            final Preference accountsPreference = findPreference(Settings.SCREEN_ACCOUNTS);
+            preferenceScreen.removePreference(accountsPreference);
+        }
     }
 
     @Override

java/src/com/android/inputmethod/latin/settings/SubScreenFragment.java

@@ -20,6 +20,7 @@ import android.app.backup.BackupManager;
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
+import android.content.res.Resources;
 import android.os.Bundle;
 import android.preference.ListPreference;
 import android.preference.Preference;
@@ -79,6 +80,16 @@ abstract class SubScreenFragment extends PreferenceFragment
         return getPreferenceManager().getSharedPreferences();
     }
 
+    /**
+     * Gets the application name to display on the UI.
+     */
+    final String getApplicationName() {
+        final Context context = getActivity();
+        final Resources res = getResources();
+        final int applicationLabelRes = context.getApplicationInfo().labelRes;
+        return res.getString(applicationLabelRes);
+    }
+
     @Override
     public void addPreferencesFromResource(final int preferencesResId) {
         super.addPreferencesFromResource(preferencesResId);

java/src/com/android/inputmethod/latin/utils/FragmentUtils.java

@@ -18,6 +18,7 @@ package com.android.inputmethod.latin.utils;
 
 import com.android.inputmethod.dictionarypack.DictionarySettingsFragment;
 import com.android.inputmethod.latin.about.AboutPreferences;
+import com.android.inputmethod.latin.settings.AccountsSettingsFragment;
 import com.android.inputmethod.latin.settings.AdvancedSettingsFragment;
 import com.android.inputmethod.latin.settings.AppearanceSettingsFragment;
 import com.android.inputmethod.latin.settings.CorrectionSettingsFragment;
@@ -42,6 +43,7 @@ public class FragmentUtils {
         sLatinImeFragments.add(DictionarySettingsFragment.class.getName());
         sLatinImeFragments.add(AboutPreferences.class.getName());
         sLatinImeFragments.add(PreferencesSettingsFragment.class.getName());
+        sLatinImeFragments.add(AccountsSettingsFragment.class.getName());
         sLatinImeFragments.add(AppearanceSettingsFragment.class.getName());
         sLatinImeFragments.add(ThemeSettingsFragment.class.getName());
         sLatinImeFragments.add(MultiLingualSettingsFragment.class.getName());