/*
 * 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.launcher3.logging;

import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_ALLAPPS_CLOSE_DOWN;
import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_ALLAPPS_OPEN_UP;
import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_HOME_GESTURE;
import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_OVERVIEW_GESTURE;

import android.content.Context;
import android.view.View;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.slice.SliceItem;

import com.android.launcher3.R;
import com.android.launcher3.logger.LauncherAtom;
import com.android.launcher3.logger.LauncherAtom.ContainerInfo;
import com.android.launcher3.logger.LauncherAtom.FromState;
import com.android.launcher3.logger.LauncherAtom.ToState;
import com.android.launcher3.model.data.ItemInfo;
import com.android.launcher3.util.ResourceBasedOverride;
import com.android.launcher3.views.ActivityContext;

/**
 * Handles the user event logging in R+.
 *
 * <pre>
 * All of the event ids are defined here.
 * Most of the methods are placeholder methods for Launcher3
 * Actual call happens only for Launcher variant that implements QuickStep.
 * </pre>
 */
public class StatsLogManager implements ResourceBasedOverride {

    public static final int LAUNCHER_STATE_UNSPECIFIED = 0;
    public static final int LAUNCHER_STATE_BACKGROUND = 1;
    public static final int LAUNCHER_STATE_HOME = 2;
    public static final int LAUNCHER_STATE_OVERVIEW = 3;
    public static final int LAUNCHER_STATE_ALLAPPS = 4;
    public static final int LAUNCHER_STATE_UNCHANGED = 5;

    @NonNull
    protected final Context mContext;
    @Nullable
    protected final ActivityContext mActivityContext;

    private KeyboardStateManager mKeyboardStateManager;
    private InstanceId mInstanceId;

    public StatsLogManager(@NonNull Context context) {
        mContext = context;
        mActivityContext = ActivityContext.lookupContextNoThrow(context);
    }

    /**
     * Returns event enum based on the two state transition information when swipe
     * gesture happens(to be removed during UserEventDispatcher cleanup).
     */
    public static EventEnum getLauncherAtomEvent(int startState,
            int targetState, EventEnum fallbackEvent) {
        if (startState == LAUNCHER_STATE_HOME
                && targetState == LAUNCHER_STATE_HOME) {
            return LAUNCHER_HOME_GESTURE;
        } else if (startState != LAUNCHER_STATE_OVERVIEW
                && targetState == LAUNCHER_STATE_OVERVIEW) {
            return LAUNCHER_OVERVIEW_GESTURE;
        } else if (startState != LAUNCHER_STATE_ALLAPPS
                && targetState == LAUNCHER_STATE_ALLAPPS) {
            return LAUNCHER_ALLAPPS_OPEN_UP;
        } else if (startState == LAUNCHER_STATE_ALLAPPS
                && targetState != LAUNCHER_STATE_ALLAPPS) {
            return LAUNCHER_ALLAPPS_CLOSE_DOWN;
        }
        return fallbackEvent; // TODO fix
    }

    public interface EventEnum {

        /**
         * Tag used to request new UI Event IDs via presubmit analysis.
         *
         * <p>Use RESERVE_NEW_UI_EVENT_ID as the constructor parameter for a new {@link EventEnum}
         * to signal the presubmit analyzer to reserve a new ID for the event. The new ID will be
         * returned as a Gerrit presubmit finding.  Do not submit {@code RESERVE_NEW_UI_EVENT_ID} as
         * the constructor parameter for any event.
         *
         * <pre>
         * &#064;UiEvent(doc = "Briefly describe the interaction when this event will be logged")
         * UNIQUE_EVENT_NAME(RESERVE_NEW_UI_EVENT_ID);
         * </pre>
         */
        int RESERVE_NEW_UI_EVENT_ID = Integer.MIN_VALUE; // Negative IDs are ignored by the logger.

        int getId();
    }

    public enum LauncherEvent implements EventEnum {
        /* Used to prevent double logging. */
        IGNORE(-1),

        @UiEvent(doc = "App launched from workspace, hotseat or folder in launcher")
        LAUNCHER_APP_LAUNCH_TAP(338),

        @UiEvent(doc = "Task launched from overview using TAP")
        LAUNCHER_TASK_LAUNCH_TAP(339),

        @UiEvent(doc = "User tapped on notification inside popup context menu.")
        LAUNCHER_NOTIFICATION_LAUNCH_TAP(516),

        @UiEvent(doc = "Task launched from overview using SWIPE DOWN")
        LAUNCHER_TASK_LAUNCH_SWIPE_DOWN(340),

        @UiEvent(doc = "App launched by dragging and dropping, probably from taskbar")
        LAUNCHER_APP_LAUNCH_DRAGDROP(1552),

        @UiEvent(doc = "TASK dismissed from overview using SWIPE UP")
        LAUNCHER_TASK_DISMISS_SWIPE_UP(341),

        @UiEvent(doc = "User dragged a launcher item")
        LAUNCHER_ITEM_DRAG_STARTED(383),

        @UiEvent(doc = "A dragged launcher item is successfully dropped onto workspace, hotseat "
                + "open folder etc")
        LAUNCHER_ITEM_DROP_COMPLETED(385),

        @UiEvent(doc = "A dragged launcher item is successfully dropped onto a folder icon.")
        LAUNCHER_ITEM_DROP_COMPLETED_ON_FOLDER_ICON(697),

        @UiEvent(doc = "A dragged launcher item is successfully dropped on another item "
                + "resulting in a new folder creation")
        LAUNCHER_ITEM_DROP_FOLDER_CREATED(386),

        @UiEvent(doc = "Folder's label is automatically assigned.")
        LAUNCHER_FOLDER_AUTO_LABELED(591),

        @UiEvent(doc = "Could not auto-label a folder because primary suggestion is null or empty.")
        LAUNCHER_FOLDER_AUTO_LABELING_SKIPPED_EMPTY_PRIMARY(592),

        @UiEvent(doc = "Could not auto-label a folder because no suggestions exist.")
        LAUNCHER_FOLDER_AUTO_LABELING_SKIPPED_EMPTY_SUGGESTIONS(593),

        @UiEvent(doc = "User manually updated the folder label.")
        LAUNCHER_FOLDER_LABEL_UPDATED(460),

        @UiEvent(doc = "User long pressed on the workspace empty space.")
        LAUNCHER_WORKSPACE_LONGPRESS(461),

        @UiEvent(doc = "User tapped or long pressed on a wallpaper icon inside launcher settings.")
        LAUNCHER_WALLPAPER_BUTTON_TAP_OR_LONGPRESS(462),

        @UiEvent(doc = "User tapped or long pressed on settings icon inside launcher settings.")
        LAUNCHER_SETTINGS_BUTTON_TAP_OR_LONGPRESS(463),

        @UiEvent(doc = "User tapped or long pressed on apps icon inside launcher settings.")
        LAUNCHER_ALL_APPS_TAP_OR_LONGPRESS(2204),

        @UiEvent(doc = "User tapped or long pressed on widget tray icon inside launcher settings.")
        LAUNCHER_WIDGETSTRAY_BUTTON_TAP_OR_LONGPRESS(464),

        @UiEvent(doc = "User expanded the list of widgets for a single app in the widget picker.")
        LAUNCHER_WIDGETSTRAY_APP_EXPANDED(818),

        @UiEvent(doc = "User searched for a widget in the widget picker.")
        LAUNCHER_WIDGETSTRAY_SEARCHED(819),

        @UiEvent(doc = "User clicked on view all button to expand the displayed list in the "
                + "widget picker.")
        LAUNCHER_WIDGETSTRAY_EXPAND_PRESS(1978),

        @UiEvent(doc = "A dragged item is dropped on 'Remove' button in the target bar")
        LAUNCHER_ITEM_DROPPED_ON_REMOVE(465),

        @UiEvent(doc = "A dragged item is dropped on 'Cancel' button in the target bar")
        LAUNCHER_ITEM_DROPPED_ON_CANCEL(466),

        @UiEvent(doc = "A predicted item is dragged and dropped on 'Don't suggest app'"
                + " button in the target bar")
        LAUNCHER_ITEM_DROPPED_ON_DONT_SUGGEST(467),

        @UiEvent(doc = "A dragged item is dropped on 'Uninstall' button in target bar")
        LAUNCHER_ITEM_DROPPED_ON_UNINSTALL(468),

        @UiEvent(doc = "User completed uninstalling the package after dropping on "
                + "the icon onto 'Uninstall' button in the target bar")
        LAUNCHER_ITEM_UNINSTALL_COMPLETED(469),

        @UiEvent(doc = "User cancelled uninstalling the package after dropping on "
                + "the icon onto 'Uninstall' button in the target bar")
        LAUNCHER_ITEM_UNINSTALL_CANCELLED(470),

        @UiEvent(doc = "User tapped or long pressed on the task icon(aka package icon) "
                + "from overview to open task menu.")
        LAUNCHER_TASK_ICON_TAP_OR_LONGPRESS(517),

        @UiEvent(doc = "User opened package specific widgets list by tapping on widgets system "
                + "shortcut inside popup context menu.")
        LAUNCHER_SYSTEM_SHORTCUT_WIDGETS_TAP(514),

        @UiEvent(doc = "User tapped on app info system shortcut.")
        LAUNCHER_SYSTEM_SHORTCUT_APP_INFO_TAP(515),

        /**
         * @deprecated Use {@link #LAUNCHER_APP_ICON_MENU_SPLIT_LEFT_TOP} or
         *             {@link #LAUNCHER_APP_ICON_MENU_SPLIT_RIGHT_BOTTOM}
         */
        @Deprecated
        @UiEvent(doc = "User tapped on split screen icon on a task menu.")
        LAUNCHER_SYSTEM_SHORTCUT_SPLIT_SCREEN_TAP(518),

        @UiEvent(doc = "User tapped on free form icon on a task menu.")
        LAUNCHER_SYSTEM_SHORTCUT_FREE_FORM_TAP(519),

        @UiEvent(doc = "User tapped on desktop icon on a task menu.")
        LAUNCHER_SYSTEM_SHORTCUT_DESKTOP_TAP(1706),

        @UiEvent(doc = "User tapped on external display icon on a task menu,")
        LAUNCHER_SYSTEM_SHORTCUT_EXTERNAL_DISPLAY_TAP(1957),

        @UiEvent(doc = "User tapped on close app on a task menu,")
        LAUNCHER_SYSTEM_SHORTCUT_CLOSE_APP_TAP(2081),

        @UiEvent(doc = "User tapped on pause app system shortcut.")
        LAUNCHER_SYSTEM_SHORTCUT_PAUSE_TAP(521),

        @UiEvent(doc = "User tapped on pin system shortcut.")
        LAUNCHER_SYSTEM_SHORTCUT_PIN_TAP(522),

        @UiEvent(doc = "User tapped on don't suggest app system shortcut.")
        LAUNCHER_SYSTEM_SHORTCUT_DONT_SUGGEST_APP_TAP(1603),

        @UiEvent(doc = "User is shown All Apps education view.")
        LAUNCHER_ALL_APPS_EDU_SHOWN(523),

        @UiEvent(doc = "User opened a folder.")
        LAUNCHER_FOLDER_OPEN(551),

        @UiEvent(doc = "Hotseat education half sheet seen")
        LAUNCHER_HOTSEAT_EDU_SEEN(479),

        @UiEvent(doc = "Hotseat migration accepted")
        LAUNCHER_HOTSEAT_EDU_ACCEPT(480),

        @UiEvent(doc = "Hotseat migration denied")
        LAUNCHER_HOTSEAT_EDU_DENY(481),

        @UiEvent(doc = "Hotseat education tip shown")
        LAUNCHER_HOTSEAT_EDU_ONLY_TIP(482),

        /**
         * @deprecated LauncherUiChanged.rank field is repurposed to store all apps rank, so no
         * separate event is required.
         */
        @Deprecated
        @UiEvent(doc = "App launch ranking logged for all apps predictions")
        LAUNCHER_ALL_APPS_RANKED(552),

        @UiEvent(doc = "App launch ranking logged for hotseat predictions)")
        LAUNCHER_HOTSEAT_RANKED(553),
        @UiEvent(doc = "Launcher is now in background. e.g., Screen off event")
        LAUNCHER_ONSTOP(562),

        @UiEvent(doc = "Launcher is now in foreground. e.g., Screen on event, back button")
        LAUNCHER_ONRESUME(563),

        @UiEvent(doc = "User swipes or fling in LEFT direction on workspace.")
        LAUNCHER_SWIPELEFT(564),

        @UiEvent(doc = "User swipes or fling in RIGHT direction on workspace.")
        LAUNCHER_SWIPERIGHT(565),

        @UiEvent(doc = "User swipes or fling in UP direction in unknown way.")
        LAUNCHER_UNKNOWN_SWIPEUP(566),

        @UiEvent(doc = "User swipes or fling in DOWN direction in unknown way.")
        LAUNCHER_UNKNOWN_SWIPEDOWN(567),

        @UiEvent(doc = "User swipes or fling in UP direction to open apps drawer.")
        LAUNCHER_ALLAPPS_OPEN_UP(568),

        @UiEvent(doc = "User swipes or fling in DOWN direction to close apps drawer.")
        LAUNCHER_ALLAPPS_CLOSE_DOWN(569),

        @UiEvent(doc = "User tap outside apps drawer sheet to close apps drawer.")
        LAUNCHER_ALLAPPS_CLOSE_TAP_OUTSIDE(941),

        @UiEvent(doc = "User swipes or fling in UP direction and hold from the bottom bazel area")
        LAUNCHER_OVERVIEW_GESTURE(570),

        @UiEvent(doc = "User swipes or fling in LEFT direction on the bottom bazel area.")
        LAUNCHER_QUICKSWITCH_LEFT(571),

        @UiEvent(doc = "User swipes or fling in RIGHT direction on the bottom bazel area.")
        LAUNCHER_QUICKSWITCH_RIGHT(572),

        @UiEvent(doc = "User swipes or fling on the bottom bazel area to enter Desktop mode.")
        LAUNCHER_QUICKSWITCH_ENTER_DESKTOP_MODE(2025),

        @UiEvent(doc = "User swipes or fling on the bottom bazel area to exit Desktop mode.")
        LAUNCHER_QUICKSWITCH_EXIT_DESKTOP_MODE(2026),

        @UiEvent(doc = "User swipes or fling in DOWN direction on the bottom bazel area.")
        LAUNCHER_SWIPEDOWN_NAVBAR(573),

        @UiEvent(doc = "User deep presses on the bottom bezel area.")
        LAUNCHER_DEEP_PRESS_NAVBAR(1543),

        @UiEvent(doc = "User long presses on the bottom bezel area.")
        LAUNCHER_LONG_PRESS_NAVBAR(1544),

        @UiEvent(doc = "User deep presses on the stashed taskbar")
        LAUNCHER_DEEP_PRESS_STASHED_TASKBAR(1602),

        @UiEvent(doc = "User long presses on the stashed taskbar")
        LAUNCHER_LONG_PRESS_STASHED_TASKBAR(1592),

        @UiEvent(doc = "User swipes or fling in UP direction from bottom bazel area.")
        LAUNCHER_HOME_GESTURE(574),

        @UiEvent(doc = "User's workspace layout information is snapshot in the background.")
        LAUNCHER_WORKSPACE_SNAPSHOT(579),

        @UiEvent(doc = "User tapped on the screenshot button on overview)")
        LAUNCHER_OVERVIEW_ACTIONS_SCREENSHOT(580),

        @UiEvent(doc = "User tapped on the select button on overview)")
        LAUNCHER_OVERVIEW_ACTIONS_SELECT(581),

        @UiEvent(doc = "User tapped on the share button on overview")
        LAUNCHER_OVERVIEW_ACTIONS_SHARE(582),

        @UiEvent(doc = "User tapped on the split screen button on overview")
        LAUNCHER_OVERVIEW_ACTIONS_SPLIT(895),

        @UiEvent(doc = "User tapped on the close button in select mode")
        LAUNCHER_SELECT_MODE_CLOSE(583),

        @UiEvent(doc = "User tapped on the highlight items in select mode")
        LAUNCHER_SELECT_MODE_ITEM(584),

        @UiEvent(doc = "Notification dot on app icon enabled.")
        LAUNCHER_NOTIFICATION_DOT_ENABLED(611),

        @UiEvent(doc = "Notification dot on app icon disabled.")
        LAUNCHER_NOTIFICATION_DOT_DISABLED(612),

        @UiEvent(doc = "For new apps, add app icons to home screen enabled.")
        LAUNCHER_ADD_NEW_APPS_TO_HOME_SCREEN_ENABLED(613),

        @UiEvent(doc = "For new apps, add app icons to home screen disabled.")
        LAUNCHER_ADD_NEW_APPS_TO_HOME_SCREEN_DISABLED(614),

        @UiEvent(doc = "Home screen rotation is enabled when phone is rotated.")
        LAUNCHER_HOME_SCREEN_ROTATION_ENABLED(615),

        @UiEvent(doc = "Home screen rotation is disabled when phone is rotated.")
        LAUNCHER_HOME_SCREEN_ROTATION_DISABLED(616),

        @UiEvent(doc = "Suggestions in all apps list enabled.")
        LAUNCHER_ALL_APPS_SUGGESTIONS_ENABLED(619),

        @UiEvent(doc = "Suggestions in all apps list disabled.")
        LAUNCHER_ALL_APPS_SUGGESTIONS_DISABLED(620),

        @UiEvent(doc = "Suggestions on home screen is enabled.")
        LAUNCHER_HOME_SCREEN_SUGGESTIONS_ENABLED(621),

        @UiEvent(doc = "Suggestions on home screen is disabled.")
        LAUNCHER_HOME_SCREEN_SUGGESTIONS_DISABLED(622),

        @UiEvent(doc = "System navigation is 3 button mode.")
        LAUNCHER_NAVIGATION_MODE_3_BUTTON(623),

        @UiEvent(doc = "System navigation mode is 2 button mode.")
        LAUNCHER_NAVIGATION_MODE_2_BUTTON(624),

        @UiEvent(doc = "System navigation mode is 0 button mode/gesture navigation mode .")
        LAUNCHER_NAVIGATION_MODE_GESTURE_BUTTON(625),

        @UiEvent(doc = "User tapped on image content in Overview Select mode.")
        LAUNCHER_SELECT_MODE_IMAGE(627),

        @UiEvent(doc = "User tapped on barcode content in Overview Select mode.")
        LAUNCHER_SELECT_MODE_BARCODE(1531),

        @UiEvent(doc = "Highlight gleams for barcode content in Overview Select mode.")
        LAUNCHER_SELECT_MODE_SHOW_BARCODE_REGIONS(1532),

        @UiEvent(doc = "Activity to add external item was started")
        LAUNCHER_ADD_EXTERNAL_ITEM_START(641),

        @UiEvent(doc = "Activity to add external item was cancelled")
        LAUNCHER_ADD_EXTERNAL_ITEM_CANCELLED(642),

        @UiEvent(doc = "Activity to add external item was backed out")
        LAUNCHER_ADD_EXTERNAL_ITEM_BACK(643),

        @UiEvent(doc = "Item was placed automatically in external item addition flow")
        LAUNCHER_ADD_EXTERNAL_ITEM_PLACED_AUTOMATICALLY(644),

        @UiEvent(doc = "Item was dragged in external item addition flow")
        LAUNCHER_ADD_EXTERNAL_ITEM_DRAGGED(645),

        @UiEvent(doc = "A folder was replaced by a single item")
        LAUNCHER_FOLDER_CONVERTED_TO_ICON(646),

        @UiEvent(doc = "A hotseat prediction item was pinned")
        LAUNCHER_HOTSEAT_PREDICTION_PINNED(647),

        @UiEvent(doc = "Undo event was tapped.")
        LAUNCHER_UNDO(648),

        @UiEvent(doc = "Task switcher clear all target was tapped.")
        LAUNCHER_TASK_CLEAR_ALL(649),

        @UiEvent(doc = "Task preview was long pressed.")
        LAUNCHER_TASK_PREVIEW_LONGPRESS(650),

        @UiEvent(doc = "User swiped down on workspace (triggering noti shade to open).")
        LAUNCHER_SWIPE_DOWN_WORKSPACE_NOTISHADE_OPEN(651),

        @UiEvent(doc = "Notification dismissed by swiping right.")
        LAUNCHER_NOTIFICATION_DISMISSED(652),

        @UiEvent(doc = "Current grid size is changed to 2x2")
        LAUNCHER_GRID_SIZE_2_BY_2(2181),

        @UiEvent(doc = "Current grid size is changed to 3x3")
        LAUNCHER_GRID_SIZE_3_BY_3(2182),

        @UiEvent(doc = "Current grid size is changed to 4x4")
        LAUNCHER_GRID_SIZE_4_BY_4(2183),

        @UiEvent(doc = "Current grid size is changed to 4x5")
        LAUNCHER_GRID_SIZE_4_BY_5(2184),

        @UiEvent(doc = "Current grid size is changed to 4x6")
        LAUNCHER_GRID_SIZE_4_BY_6(2185),

        @UiEvent(doc = "Current grid size is changed to 5x5")
        LAUNCHER_GRID_SIZE_5_BY_5(2186),

        @UiEvent(doc = "Current grid size is changed to 5x6")
        LAUNCHER_GRID_SIZE_5_BY_6(2187),

        @UiEvent(doc = "Current grid size is changed to 6x5")
        LAUNCHER_GRID_SIZE_6_BY_5(2188),

        @UiEvent(doc = "Launcher entered into AllApps state.")
        LAUNCHER_ALLAPPS_ENTRY(692),

        @UiEvent(doc = "Launcher exited from AllApps state.")
        LAUNCHER_ALLAPPS_EXIT(693),

        @UiEvent(doc = "User closed the AllApps keyboard.")
        LAUNCHER_ALLAPPS_KEYBOARD_CLOSED(694),

        @UiEvent(doc = "User switched to AllApps Main/Personal tab by swiping left.")
        LAUNCHER_ALLAPPS_SWIPE_TO_PERSONAL_TAB(695),

        @UiEvent(doc = "User switched to AllApps Work tab by swiping right.")
        LAUNCHER_ALLAPPS_SWIPE_TO_WORK_TAB(696),

        @UiEvent(doc = "Default event when dedicated UI event is not available for the user action"
                + " on slice .")
        LAUNCHER_SLICE_DEFAULT_ACTION(700),

        @UiEvent(doc = "User toggled-on a Slice item.")
        LAUNCHER_SLICE_TOGGLE_ON(701),

        @UiEvent(doc = "User toggled-off a Slice item.")
        LAUNCHER_SLICE_TOGGLE_OFF(702),

        @UiEvent(doc = "User acted on a Slice item with a button.")
        LAUNCHER_SLICE_BUTTON_ACTION(703),

        @UiEvent(doc = "User acted on a Slice item with a slider.")
        LAUNCHER_SLICE_SLIDER_ACTION(704),

        @UiEvent(doc = "User tapped on the entire row of a Slice.")
        LAUNCHER_SLICE_CONTENT_ACTION(705),

        @UiEvent(doc = "User tapped on the see more button of a Slice.")
        LAUNCHER_SLICE_SEE_MORE_ACTION(706),

        @UiEvent(doc = "User selected from a selection row of Slice.")
        LAUNCHER_SLICE_SELECTION_ACTION(707),

        @UiEvent(doc = "IME is used for selecting the focused item on the AllApps screen.")
        LAUNCHER_ALLAPPS_FOCUSED_ITEM_SELECTED_WITH_IME(718),

        @UiEvent(doc = "User long-pressed on an AllApps item.")
        LAUNCHER_ALLAPPS_ITEM_LONG_PRESSED(719),

        @UiEvent(doc = "Launcher entered into AllApps state with device search enabled.")
        LAUNCHER_ALLAPPS_ENTRY_WITH_DEVICE_SEARCH(720),

        @UiEvent(doc = "User switched to AllApps Main/Personal tab by tapping on it.")
        LAUNCHER_ALLAPPS_TAP_ON_PERSONAL_TAB(721),

        @UiEvent(doc = "User switched to AllApps Work tab by tapping on it.")
        LAUNCHER_ALLAPPS_TAP_ON_WORK_TAB(722),

        @UiEvent(doc = "All apps vertical fling started.")
        LAUNCHER_ALLAPPS_VERTICAL_SWIPE_BEGIN(724),

        @UiEvent(doc = "All apps vertical fling ended.")
        LAUNCHER_ALLAPPS_VERTICAL_SWIPE_END(725),

        @UiEvent(doc = "Show URL indicator for Overview Sharing")
        LAUNCHER_OVERVIEW_SHARING_SHOW_URL_INDICATOR(764),

        @UiEvent(doc = "Show image indicator for Overview Sharing")
        LAUNCHER_OVERVIEW_SHARING_SHOW_IMAGE_INDICATOR(765),

        @UiEvent(doc = "User taps URL indicator in Overview")
        LAUNCHER_OVERVIEW_SHARING_URL_INDICATOR_TAP(766),

        @UiEvent(doc = "User taps image indicator in Overview")
        LAUNCHER_OVERVIEW_SHARING_IMAGE_INDICATOR_TAP(767),

        @UiEvent(doc = "User long presses an image in Overview")
        LAUNCHER_OVERVIEW_SHARING_IMAGE_LONG_PRESS(768),

        @UiEvent(doc = "User drags a URL in Overview")
        LAUNCHER_OVERVIEW_SHARING_URL_DRAG(769),

        @UiEvent(doc = "User drags an image in Overview")
        LAUNCHER_OVERVIEW_SHARING_IMAGE_DRAG(770),

        @UiEvent(doc = "User drops URL to a direct share target")
        LAUNCHER_OVERVIEW_SHARING_DROP_URL_TO_TARGET(771),

        @UiEvent(doc = "User drops an image to a direct share target")
        LAUNCHER_OVERVIEW_SHARING_DROP_IMAGE_TO_TARGET(772),

        @UiEvent(doc = "User drops URL to the More button")
        LAUNCHER_OVERVIEW_SHARING_DROP_URL_TO_MORE(773),

        @UiEvent(doc = "User drops an image to the More button")
        LAUNCHER_OVERVIEW_SHARING_DROP_IMAGE_TO_MORE(774),

        @UiEvent(doc = "User taps a share target to share URL")
        LAUNCHER_OVERVIEW_SHARING_TAP_TARGET_TO_SHARE_URL(775),

        @UiEvent(doc = "User taps a share target to share an image")
        LAUNCHER_OVERVIEW_SHARING_TAP_TARGET_TO_SHARE_IMAGE(776),

        @UiEvent(doc = "User taps the More button to share URL")
        LAUNCHER_OVERVIEW_SHARING_TAP_MORE_TO_SHARE_URL(777),

        @UiEvent(doc = "User taps the More button to share an image")
        LAUNCHER_OVERVIEW_SHARING_TAP_MORE_TO_SHARE_IMAGE(778),

        @UiEvent(doc = "Show Barode indicator for overview sharing")
        LAUNCHER_OVERVIEW_SHARING_SHOW_BARCODE_INDICATOR(1533),

        @UiEvent(doc = "User taps barcode indicator in overview")
        LAUNCHER_OVERVIEW_SHARING_BARCODE_INDICATOR_TAP(1534),

        @UiEvent(doc = "Configure barcode region for long_press action for overview sharing")
        LAUNCHER_OVERVIEW_SHARING_CONFIGURE_BARCODE_REGION_LONG_PRESS(1535),

        @UiEvent(doc = "User long presses a barcode region in overview")
        LAUNCHER_OVERVIEW_SHARING_BARCODE_REGION_LONG_PRESS(1536),

        @UiEvent(doc = "User drags a barcode region in overview")
        LAUNCHER_OVERVIEW_SHARING_BARCODE_REGION_DRAG(1537),

        @UiEvent(doc = "User started resizing a widget on their home screen.")
        LAUNCHER_WIDGET_RESIZE_STARTED(820),

        @UiEvent(doc = "User finished resizing a widget on their home screen.")
        LAUNCHER_WIDGET_RESIZE_COMPLETED(824),

        @UiEvent(doc = "User reconfigured a widget on their home screen.")
        LAUNCHER_WIDGET_RECONFIGURED(821),

        @UiEvent(doc = "User enabled themed icons option in wallpaper & style settings.")
        LAUNCHER_THEMED_ICON_ENABLED(836),

        @UiEvent(doc = "User disabled themed icons option in wallpaper & style settings.")
        LAUNCHER_THEMED_ICON_DISABLED(837),

        @UiEvent(doc = "User tapped on 'Turn on work apps' button in all apps window.")
        LAUNCHER_TURN_ON_WORK_APPS_TAP(838),

        @UiEvent(doc = "User tapped on 'Turn off work apps' button in all apps window.")
        LAUNCHER_TURN_OFF_WORK_APPS_TAP(839),

        @UiEvent(doc = "Launcher item drop failed since there was not enough room on the screen.")
        LAUNCHER_ITEM_DROP_FAILED_INSUFFICIENT_SPACE(872),

        @UiEvent(doc = "User clicks on the search icon on header to launch search in app.")
        LAUNCHER_ALLAPPS_SEARCHINAPP_LAUNCH(913),

        @UiEvent(doc = "User is shown the back gesture navigation tutorial step.")
        LAUNCHER_GESTURE_TUTORIAL_BACK_STEP_SHOWN(959),

        @UiEvent(doc = "User is shown the home gesture navigation tutorial step.")
        LAUNCHER_GESTURE_TUTORIAL_HOME_STEP_SHOWN(960),

        @UiEvent(doc = "User is shown the overview gesture navigation tutorial step.")
        LAUNCHER_GESTURE_TUTORIAL_OVERVIEW_STEP_SHOWN(961),

        @UiEvent(doc = "User completed the back gesture navigation tutorial step.")
        LAUNCHER_GESTURE_TUTORIAL_BACK_STEP_COMPLETED(962),

        @UiEvent(doc = "User completed the home gesture navigation tutorial step.")
        LAUNCHER_GESTURE_TUTORIAL_HOME_STEP_COMPLETED(963),

        @UiEvent(doc = "User completed the overview gesture navigation tutorial step.")
        LAUNCHER_GESTURE_TUTORIAL_OVERVIEW_STEP_COMPLETED(964),

        @UiEvent(doc = "User skips the gesture navigation tutorial.")
        LAUNCHER_GESTURE_TUTORIAL_SKIPPED(965),

        @UiEvent(doc = "User scrolled on one of the all apps surfaces such as A-Z list, search "
                + "result page etc.")
        LAUNCHER_ALLAPPS_SCROLLED(985),

        @UiEvent(doc = "User scrolled up on the all apps personal A-Z list.")
        LAUNCHER_ALLAPPS_PERSONAL_SCROLLED_UP(1287),

        @UiEvent(doc = "User scrolled down on the all apps personal A-Z list.")
        LAUNCHER_ALLAPPS_PERSONAL_SCROLLED_DOWN(1288),

        @UiEvent(doc = "User scrolled on one of the all apps surfaces such as A-Z list, search "
                + "result page etc and we don't know the direction since user came back to "
                + "original position from which they scrolled.")
        LAUNCHER_ALLAPPS_SCROLLED_UNKNOWN_DIRECTION(1231),

        @UiEvent(doc = "User tapped taskbar home button")
        LAUNCHER_TASKBAR_HOME_BUTTON_TAP(1003),

        @UiEvent(doc = "User tapped taskbar back button")
        LAUNCHER_TASKBAR_BACK_BUTTON_TAP(1004),

        @UiEvent(doc = "User tapped taskbar overview/recents button")
        LAUNCHER_TASKBAR_OVERVIEW_BUTTON_TAP(1005),

        @UiEvent(doc = "User tapped taskbar IME switcher button")
        LAUNCHER_TASKBAR_IME_SWITCHER_BUTTON_TAP(1006),

        @UiEvent(doc = "User tapped taskbar a11y button")
        LAUNCHER_TASKBAR_A11Y_BUTTON_TAP(1007),

        @UiEvent(doc = "User tapped taskbar home button")
        LAUNCHER_TASKBAR_HOME_BUTTON_LONGPRESS(1008),

        @UiEvent(doc = "User tapped taskbar back button")
        LAUNCHER_TASKBAR_BACK_BUTTON_LONGPRESS(1009),

        @UiEvent(doc = "User tapped taskbar overview/recents button")
        LAUNCHER_TASKBAR_OVERVIEW_BUTTON_LONGPRESS(1010),

        @UiEvent(doc = "User tapped taskbar a11y button")
        LAUNCHER_TASKBAR_A11Y_BUTTON_LONGPRESS(1011),

        @UiEvent(doc = "Show an 'Undo' snackbar when users dismiss a predicted hotseat item")
        LAUNCHER_DISMISS_PREDICTION_UNDO(1035),

        @UiEvent(doc = "User clicked on IME quicksearch button.")
        LAUNCHER_ALLAPPS_QUICK_SEARCH_WITH_IME(1047),

        @UiEvent(doc = "User tapped taskbar All Apps button.")
        LAUNCHER_TASKBAR_ALLAPPS_BUTTON_TAP(1057),

        @UiEvent(doc = "User long pressed taskbar All Apps button.")
        LAUNCHER_TASKBAR_ALLAPPS_BUTTON_LONG_PRESS(1607),

        @UiEvent(doc = "User tapped on Share app system shortcut.")
        LAUNCHER_SYSTEM_SHORTCUT_APP_SHARE_TAP(1075),

        @UiEvent(doc = "User has invoked split to right half from an app icon menu")
        LAUNCHER_APP_ICON_MENU_SPLIT_RIGHT_BOTTOM(1199),

        @UiEvent(doc = "User has invoked split to left half from an app icon menu")
        LAUNCHER_APP_ICON_MENU_SPLIT_LEFT_TOP(1200),

        @UiEvent(doc = "Number of apps in A-Z list (personal and work profile)")
        LAUNCHER_ALLAPPS_COUNT(1225),

        @UiEvent(doc = "User has invoked split to right half with a keyboard shortcut.")
        LAUNCHER_KEYBOARD_SHORTCUT_SPLIT_RIGHT_BOTTOM(1232),

        @UiEvent(doc = "User has invoked split to left half with a keyboard shortcut.")
        LAUNCHER_KEYBOARD_SHORTCUT_SPLIT_LEFT_TOP(1233),

        @UiEvent(doc = "User has invoked split to right half from desktop mode.")
        LAUNCHER_DESKTOP_MODE_SPLIT_RIGHT_BOTTOM(1412),

        @UiEvent(doc = "User has invoked split to left half from desktop mode.")
        LAUNCHER_DESKTOP_MODE_SPLIT_LEFT_TOP(1464),

        @UiEvent(doc = "User has collapsed the work FAB button by scrolling down in the all apps"
                + " work A-Z list.")
        LAUNCHER_WORK_FAB_BUTTON_COLLAPSE(1276),

        @UiEvent(doc = "User has collapsed the work FAB button by scrolling up in the all apps"
                + " work A-Z list.")
        LAUNCHER_WORK_FAB_BUTTON_EXTEND(1277),

        @UiEvent(doc = "User scrolled down on the search result page.")
        LAUNCHER_ALLAPPS_SEARCH_SCROLLED_DOWN(1285),

        @UiEvent(doc = "User scrolled up on the search result page.")
        LAUNCHER_ALLAPPS_SEARCH_SCROLLED_UP(1286),

        @UiEvent(doc = "User or automatic timeout has hidden transient taskbar.")
        LAUNCHER_TRANSIENT_TASKBAR_HIDE(1330),

        @UiEvent(doc = "User has swiped upwards from the gesture handle to show transient taskbar.")
        LAUNCHER_TRANSIENT_TASKBAR_SHOW(1331),

        @UiEvent(doc = "User has clicked an app pair and launched directly into split screen.")
        LAUNCHER_APP_PAIR_LAUNCH(1374),

        @UiEvent(doc = "User saved an app pair.")
        LAUNCHER_APP_PAIR_SAVE(1456),

        @UiEvent(doc = "App launched through pending intent")
        LAUNCHER_APP_LAUNCH_PENDING_INTENT(1394),

        @UiEvent(doc = "User long pressed on taskbar divider icon to open popup menu")
        LAUNCHER_TASKBAR_DIVIDER_MENU_OPEN(1488),

        @UiEvent(doc = "User long pressed on taskbar divider icon to close popup menu")
        LAUNCHER_TASKBAR_DIVIDER_MENU_CLOSE(1489),

        @UiEvent(doc = "User has pinned taskbar using taskbar divider menu")
        LAUNCHER_TASKBAR_PINNED(1490),

        @UiEvent(doc = "User has unpinned taskbar using taskbar divider menu")
        LAUNCHER_TASKBAR_UNPINNED(1491),

        @UiEvent(doc = "User tapped private space lock button")
        LAUNCHER_PRIVATE_SPACE_LOCK_TAP(1548),

        @UiEvent(doc = "User tapped private space unlock button")
        LAUNCHER_PRIVATE_SPACE_UNLOCK_TAP(1549),

        @UiEvent(doc = "User tapped private space settings button")
        LAUNCHER_PRIVATE_SPACE_SETTINGS_TAP(1550),

        @UiEvent(doc = "User tapped on install to private space system shortcut.")
        LAUNCHER_PRIVATE_SPACE_INSTALL_SYSTEM_SHORTCUT_TAP(1565),

        @UiEvent(doc = "User tapped private space install app button.")
        LAUNCHER_PRIVATE_SPACE_INSTALL_APP_BUTTON_TAP(1605),

        @UiEvent(doc = "User attempted to create split screen with a widget")
        LAUNCHER_SPLIT_WIDGET_ATTEMPT(1604),

        @UiEvent(doc = "User tapped on private space uninstall system shortcut.")
        LAUNCHER_PRIVATE_SPACE_UNINSTALL_SYSTEM_SHORTCUT_TAP(1608),

        @UiEvent(doc = "User initiated split selection")
        LAUNCHER_SPLIT_SELECTION_INITIATED(1618),

        @UiEvent(doc = "User finished a split selection session")
        LAUNCHER_SPLIT_SELECTION_COMPLETE(1619),

        @UiEvent(doc = "User selected both apps for split screen")
        LAUNCHER_SPLIT_SELECTED_SECOND_APP(1609),

        @UiEvent(doc = "User exited split selection by going home via swipe, button, or state "
                + "transition")
        LAUNCHER_SPLIT_SELECTION_EXIT_HOME(1610),

        @UiEvent(doc = "User exited split selection by tapping cancel in split instructions view")
        LAUNCHER_SPLIT_SELECTION_EXIT_CANCEL_BUTTON(1611),

        @UiEvent(doc = "User exited split selection when another activity/app came to foreground"
                + " after first app had been selected OR if user long-pressed on home. Default exit"
                + " metric.")
        LAUNCHER_SPLIT_SELECTION_EXIT_INTERRUPTED(1612),

        @UiEvent(doc = "User tapped add widget button in widget sheet.")
        LAUNCHER_WIDGET_ADD_BUTTON_TAP(1622),

        @UiEvent(doc = "Number of user installed Private profile apps, shown above separator line")
        LAUNCHER_PRIVATE_SPACE_USER_INSTALLED_APPS_COUNT(1672),

        @UiEvent(doc = "Number of preinstalled Private profile apps, shown under separator line")
        LAUNCHER_PRIVATE_SPACE_PREINSTALLED_APPS_COUNT(1673),

        @UiEvent(doc = "Private space lock animation started")
        LAUNCHER_PRIVATE_SPACE_LOCK_ANIMATION_BEGIN(1725),

        @UiEvent(doc = "Private space lock animation finished")
        LAUNCHER_PRIVATE_SPACE_LOCK_ANIMATION_END(1726),

        @UiEvent(doc = "Private space unlock animation started")
        LAUNCHER_PRIVATE_SPACE_UNLOCK_ANIMATION_BEGIN(1727),

        @UiEvent(doc = "Private space unlock animation finished")
        LAUNCHER_PRIVATE_SPACE_UNLOCK_ANIMATION_END(1728),

        @UiEvent(doc = "User rotates whilst in Overview / RecentsView")
        LAUNCHER_OVERVIEW_ORIENTATION_CHANGED(1762),

        @UiEvent(doc = "User launches Overview from 3 button navigation")
        LAUNCHER_OVERVIEW_SHOW_OVERVIEW_FROM_3_BUTTON(1763),

        @UiEvent(doc = "User launches Overview from alt+tab keyboard quick switch")
        LAUNCHER_OVERVIEW_SHOW_OVERVIEW_FROM_KEYBOARD_QUICK_SWITCH(1764),

        @UiEvent(doc = "User launches Overview from meta+tab keyboard shortcut")
        LAUNCHER_OVERVIEW_SHOW_OVERVIEW_FROM_KEYBOARD_SHORTCUT(1765),

        @UiEvent(doc = "User long pressed on the taskbar IME switcher button")
        LAUNCHER_TASKBAR_IME_SWITCHER_BUTTON_LONGPRESS(1798),

        @UiEvent(doc = "Failed to launch assistant due to Google assistant not available")
        LAUNCHER_LAUNCH_ASSISTANT_FAILED_NOT_AVAILABLE(1465),

        @UiEvent(doc = "Failed to launch assistant due to service error")
        LAUNCHER_LAUNCH_ASSISTANT_FAILED_SERVICE_ERROR(1466),

        @UiEvent(doc = "User launched assistant by long-pressing nav handle")
        LAUNCHER_LAUNCH_ASSISTANT_SUCCESSFUL_NAV_HANDLE(1467),

        @UiEvent(doc = "Failed to launch due to Contextual Search not available")
        LAUNCHER_LAUNCH_OMNI_FAILED_NOT_AVAILABLE(1471),

        @UiEvent(doc = "Failed to launch due to Contextual Search setting disabled")
        LAUNCHER_LAUNCH_OMNI_FAILED_SETTING_DISABLED(1632),

        @UiEvent(doc = "User launched Contextual Search by long-pressing home in 3-button mode")
        LAUNCHER_LAUNCH_OMNI_SUCCESSFUL_HOME(1481),

        @UiEvent(doc = "User launched Contextual Search by using accessibility System Action")
        LAUNCHER_LAUNCH_OMNI_SUCCESSFUL_SYSTEM_ACTION(1492),

        @UiEvent(doc = "User launched Contextual Search by long pressing the meta key")
        LAUNCHER_LAUNCH_OMNI_SUCCESSFUL_META(1606),

        @UiEvent(doc = "Contextual Search invocation was attempted over the notification shade")
        LAUNCHER_LAUNCH_OMNI_ATTEMPTED_OVER_NOTIFICATION_SHADE(1485),

        @UiEvent(doc = "The Contextual Search all entrypoints toggle value in Settings")
        LAUNCHER_SETTINGS_OMNI_ALL_ENTRYPOINTS_TOGGLE_VALUE(1633),

        @UiEvent(doc = "Contextual Search invocation was attempted over the keyguard")
        LAUNCHER_LAUNCH_OMNI_ATTEMPTED_OVER_KEYGUARD(1501),

        @UiEvent(doc = "Contextual Search invocation was attempted while splitscreen is active")
        LAUNCHER_LAUNCH_OMNI_ATTEMPTED_SPLITSCREEN(1505),

        @UiEvent(doc = "User long press nav handle and a long press runnable was created.")
        LAUNCHER_OMNI_GET_LONG_PRESS_RUNNABLE(1545),

        @UiEvent(doc = "User tapped on \"change aspect ratio\" system shortcut.")
        LAUNCHER_ASPECT_RATIO_SETTINGS_SYSTEM_SHORTCUT_TAP(2219),

        // One Grid Flags
        @UiEvent(doc = "User sets the device in Fixed Landscape")
        FIXED_LANDSCAPE_TOGGLE_ENABLE(2014),

        @UiEvent(doc = "User sets the device in Fixed Landscape")
        FIXED_LANDSCAPE_TOGGLE_DISABLED(2020),

        @UiEvent(doc = "Work utility view expand animation started")
        LAUNCHER_WORK_UTILITY_VIEW_EXPAND_ANIMATION_BEGIN(2075),

        @UiEvent(doc = "Work utility view expand animation ended")
        LAUNCHER_WORK_UTILITY_VIEW_EXPAND_ANIMATION_END(2076),

        @UiEvent(doc = "Work utility view shrink animation started")
        LAUNCHER_WORK_UTILITY_VIEW_SHRINK_ANIMATION_BEGIN(2077),

        @UiEvent(doc = "Work utility view shrink animation ended")
        LAUNCHER_WORK_UTILITY_VIEW_SHRINK_ANIMATION_END(2078),

        @UiEvent(doc = "Standard grid migration occurred")
        LAUNCHER_STANDARD_GRID_MIGRATION(2200),

        @UiEvent(doc = "Row shift grid migration occurred")
        LAUNCHER_ROW_SHIFT_GRID_MIGRATION(2201),

        @UiEvent(doc = "Do standard migration when upgrading to one grid")
        LAUNCHER_STANDARD_ONE_GRID_MIGRATION(2205),

        @UiEvent(doc = "Do row shift migration when upgrading to one grid")
        LAUNCHER_ROW_SHIFT_ONE_GRID_MIGRATION(2206),

        // ADD MORE
        ;

        private final int mId;

        LauncherEvent(int id) {
            mId = id;
        }

        public int getId() {
            return mId;
        }
    }

    /** Launcher's latency events. */
    public enum LauncherLatencyEvent implements EventEnum {
        // Details of below 6 events with prefix of "LAUNCHER_LATENCY_STARTUP_" are discussed in
        // go/launcher-startup-latency
        @UiEvent(doc = "The total duration of launcher startup latency.")
        LAUNCHER_LATENCY_STARTUP_TOTAL_DURATION(1362),

        @UiEvent(doc = "The duration of launcher activity's onCreate().")
        LAUNCHER_LATENCY_STARTUP_ACTIVITY_ON_CREATE(1363),

        @UiEvent(doc =
                "The duration to inflate launcher root view in launcher activity's onCreate().")
        LAUNCHER_LATENCY_STARTUP_VIEW_INFLATION(1364),

        @UiEvent(doc = "The duration of asynchronous loading workspace")
        LAUNCHER_LATENCY_STARTUP_WORKSPACE_LOADER_ASYNC(1367),

        @UiEvent(doc = "Time passed between Contextual Search runnable creation and execution. This"
                + " ensures that Recent animations have finished before Contextual Search starts.")
        LAUNCHER_LATENCY_OMNI_RUNNABLE(1546),

        @UiEvent(doc = "Time passed between nav handle touch down and cancellation without "
                + "triggering Contextual Search")
        LAUNCHER_LATENCY_CONTEXTUAL_SEARCH_LPNH_ABANDON(2171),
        ;

        private final int mId;

        LauncherLatencyEvent(int id) {
            mId = id;
        }

        @Override
        public int getId() {
            return mId;
        }
    }

    /**
     * Launcher specific ranking related events.
     */
    public enum LauncherRankingEvent implements EventEnum {

        UNKNOWN(0);
        // ADD MORE

        private final int mId;

        LauncherRankingEvent(int id) {
            mId = id;
        }

        public int getId() {
            return mId;
        }
    }

    /**
     * Helps to construct and log launcher event.
     */
    public interface StatsLogger {

        /**
         * Sets log fields from provided {@link ItemInfo}.
         */
        default StatsLogger withItemInfo(ItemInfo itemInfo) {
            return this;
        }


        /**
         * Sets {@link InstanceId} of log message.
         */
        default StatsLogger withInstanceId(InstanceId instanceId) {
            return this;
        }

        /**
         * Sets rank field of log message.
         */
        default StatsLogger withRank(int rank) {
            return this;
        }

        /**
         * Sets source launcher state field of log message.
         */
        default StatsLogger withSrcState(int srcState) {
            return this;
        }

        /**
         * Sets destination launcher state field of log message.
         */
        default StatsLogger withDstState(int dstState) {
            return this;
        }

        /**
         * Sets FromState field of log message.
         */
        default StatsLogger withFromState(FromState fromState) {
            return this;
        }

        /**
         * Sets ToState field of log message.
         */
        default StatsLogger withToState(ToState toState) {
            return this;
        }

        /**
         * Sets editText field of log message.
         */
        default StatsLogger withEditText(String editText) {
            return this;
        }

        /**
         * Sets the final value for container related fields of log message.
         *
         * By default container related fields are derived from {@link ItemInfo}, this method would
         * override those values.
         */
        default StatsLogger withContainerInfo(ContainerInfo containerInfo) {
            return this;
        }

        /**
         * Sets logging fields from provided {@link SliceItem}.
         */
        default StatsLogger withSliceItem(SliceItem sliceItem) {
            return this;
        }

        /**
         * Sets logging fields from provided {@link LauncherAtom.Slice}.
         */
        default StatsLogger withSlice(LauncherAtom.Slice slice) {
            return this;
        }

        /**
         * Sets cardinality of log message.
         */
        default StatsLogger withCardinality(int cardinality) {
            return this;
        }

        /**
         * Sets the input type of the log message.
         */
        default StatsLogger withInputType(int inputType) {
            return this;
        }

        /**
         * Set the features of the log message.
         */
        default StatsLogger withFeatures(int feature) {
            return this;
        }

        /**
         * Set the package name of the log message.
         */
        default StatsLogger withPackageName(@Nullable String packageName) {
            return this;
        }

        /**
         * Builds the final message and logs it as {@link EventEnum}.
         */
        default void log(EventEnum event) {
        }

        /**
         * Builds the final message and logs it to two different atoms, one for
         * event tracking and the other for jank tracking.
         */
        default void sendToInteractionJankMonitor(EventEnum event, View v) {
        }
    }

    /**
     * Helps to construct and log latency event.
     */
    public interface StatsLatencyLogger {

        /**
         * Should be in sync with:
         * google3/wireless/android/sysui/aster/asterstats/launcher_event_processed.proto
         */
        enum LatencyType {
            UNKNOWN(0),
            // example: launcher restart that happens via daily backup and restore
            COLD(1),
            HOT(2),
            TIMEOUT(3),
            FAIL(4),
            COLD_USERWAITING(5),
            ATOMIC(6),
            CONTROLLED(7),
            CACHED(8),
            // example: device is rebooting via power key or shell command `adb reboot`
            COLD_DEVICE_REBOOTING(9),
            // Tracking warm startup latency:
            // https://developer.android.com/topic/performance/vitals/launch-time#warm
            WARM(10);
            private final int mId;

            LatencyType(int id) {
                this.mId = id;
            }

            public int getId() {
                return mId;
            }
        }

        /**
         * Sets {@link InstanceId} of log message.
         */
        default StatsLatencyLogger withInstanceId(InstanceId instanceId) {
            return this;
        }


        /**
         * Sets latency of the event.
         */
        default StatsLatencyLogger withLatency(long latencyInMillis) {
            return this;
        }

        /**
         * Sets {@link LatencyType} of log message.
         */
        default StatsLatencyLogger withType(LatencyType type) {
            return this;
        }

        /**
         * Sets query length of the event.
         */
        default StatsLatencyLogger withQueryLength(int queryLength) {
            return this;
        }

        /**
         * Sets sub event type.
         */
        default StatsLatencyLogger withSubEventType(int type) {
            return this;
        }


        /** Sets cardinality of the event. */
        default StatsLatencyLogger withCardinality(int cardinality) {
            return this;
        }

        /**
         * Sets packageId of log message.
         */
        default StatsLatencyLogger withPackageId(int packageId) {
            return this;
        }

        /**
         * Builds the final message and logs it as {@link EventEnum}.
         */
        default void log(EventEnum event) {
        }
    }

    /**
     * Helps to construct and log impression event.
     */
    public interface StatsImpressionLogger {

        enum State {
            UNKNOWN(0),
            ALLAPPS(1),
            SEARCHBOX_WIDGET(2);
            private final int mLauncherState;

            State(int id) {
                this.mLauncherState = id;
            }

            public int getLauncherState() {
                return mLauncherState;
            }
        }

        /**
         * Sets {@link InstanceId} of log message.
         */
        default StatsImpressionLogger withInstanceId(InstanceId instanceId) {
            return this;
        }

        /**
         * Sets {@link State} of impression event.
         */
        default StatsImpressionLogger withState(State state) {
            return this;
        }

        /**
         * Sets query length of the event.
         */
        default StatsImpressionLogger withQueryLength(int queryLength) {
            return this;
        }

        /**
         * Sets {@link com.android.app.search.ResultType} for the impression event.
         */
        default StatsImpressionLogger withResultType(int resultType) {
            return this;
        }

        /**
         * Sets boolean for each of {@link com.android.app.search.ResultType} that indicates
         * if this result is above keyboard or not for the impression event.
         */
        default StatsImpressionLogger withAboveKeyboard(boolean aboveKeyboard) {
            return this;
        }

        /**
         * Sets uid for each of {@link com.android.app.search.ResultType} that indicates
         * package name for the impression event.
         */
        default StatsImpressionLogger withUid(int uid) {
            return this;
        }

        /**
         * Sets result source that indicates the origin of the result for the impression event.
         */
        default StatsImpressionLogger withResultSource(int resultSource) {
            return this;
        }

        /**
         * Builds the final message and logs it as {@link EventEnum}.
         */
        default void log(EventEnum event) {
        }
    }

    /**
     * Returns new logger object.
     */
    public StatsLogger logger() {
        StatsLogger logger = createLogger();
        if (mInstanceId != null) {
            logger.withInstanceId(mInstanceId);
        }
        return logger;
    }

    /**
     * Returns new latency logger object.
     */
    public StatsLatencyLogger latencyLogger() {
        StatsLatencyLogger logger = createLatencyLogger();
        if (mInstanceId != null) {
            logger.withInstanceId(mInstanceId);
        }
        return logger;
    }

    /**
     * Returns new impression logger object.
     */
    public StatsImpressionLogger impressionLogger() {
        StatsImpressionLogger logger = createImpressionLogger();
        if (mInstanceId != null) {
            logger.withInstanceId(mInstanceId);
        }
        return logger;
    }

    /**
     * Returns a singleton KeyboardStateManager.
     */
    public KeyboardStateManager keyboardStateManager() {
        if (mKeyboardStateManager == null) {
            mKeyboardStateManager = new KeyboardStateManager(
                    mContext != null ? mContext.getResources().getDimensionPixelSize(
                            R.dimen.default_ime_height) : 0);
        }
        return mKeyboardStateManager;
    }

    protected StatsLogger createLogger() {
        return new StatsLogger() {
        };
    }

    protected StatsLatencyLogger createLatencyLogger() {
        return new StatsLatencyLogger() {
        };
    }

    protected StatsImpressionLogger createImpressionLogger() {
        return new StatsImpressionLogger() {
        };
    }

    /**
     * Sets InstanceId to every new {@link StatsLogger} object returned by {@link #logger()} when
     * not-null.
     */
    public StatsLogManager withDefaultInstanceId(@Nullable InstanceId instanceId) {
        this.mInstanceId = instanceId;
        return this;
    }

    /**
     * Creates a new instance of {@link StatsLogManager} based on provided context.
     */
    public static StatsLogManager newInstance(Context context) {
        return Overrides.getObject(
                StatsLogManager.class, context, R.string.stats_log_manager_class);
    }
}
