commit 3a8353256a9cc2880a578ddf5a53bf7c34b5f63a
author Steven Ng <stevenckng@google.com> Tue Mar 02 21:26:00 2021 +0000
committer Steven Ng <stevenckng@google.com> Mon Mar 08 23:37:51 2021 +0000
tree 5bf75d941656a25de220501418351ec81cc8ebcf
parent 1f4a3414f18e99b9249c8f1717df8530898833fa

Widgets recommendation backend

Add a widgets recommendation mechanism based on AiAI app predication
ranking with the following changes:

1. Only one widget is picked from one app.
2. Widgets that are already added to the workspace are excluded from
   the recommendation.

Test: run PredicationUpdateTaskTest

Bug: 179797520
Change-Id: Ia697bc6df0bae75969e68b7b3de32d57901f7461

src/com/android/launcher3/LauncherSettings.java

diff --git a/src/com/android/launcher3/LauncherSettings.java b/src/com/android/launcher3/LauncherSettings.java
index dfdc53c..22c257a 100644
--- a/src/com/android/launcher3/LauncherSettings.java
+++ b/src/com/android/launcher3/LauncherSettings.java
@@ -193,6 +193,7 @@
         public static final int CONTAINER_DESKTOP = -100;
         public static final int CONTAINER_HOTSEAT = -101;
         public static final int CONTAINER_PREDICTION = -102;
+        public static final int CONTAINER_WIDGETS_PREDICTION = -111;
         public static final int CONTAINER_HOTSEAT_PREDICTION = -103;
         public static final int CONTAINER_ALL_APPS = -104;
         public static final int CONTAINER_WIDGETS_TRAY = -105;

src/com/android/launcher3/model/BaseModelUpdateTask.java

diff --git a/src/com/android/launcher3/model/BaseModelUpdateTask.java b/src/com/android/launcher3/model/BaseModelUpdateTask.java
index 543ee2a..ad553d5 100644
--- a/src/com/android/launcher3/model/BaseModelUpdateTask.java
+++ b/src/com/android/launcher3/model/BaseModelUpdateTask.java
@@ -124,7 +124,7 @@
 
     public void bindUpdatedWidgets(BgDataModel dataModel) {
         final ArrayList<WidgetsListBaseEntry> widgets =
-                dataModel.widgetsModel.getWidgetsList(mApp.getContext());
+                dataModel.widgetsModel.getWidgetsListForPicker(mApp.getContext());
         scheduleCallbackTask(c -> c.bindAllWidgets(widgets));
     }
 

src/com/android/launcher3/popup/PopupDataProvider.java

diff --git a/src/com/android/launcher3/popup/PopupDataProvider.java b/src/com/android/launcher3/popup/PopupDataProvider.java
index 1853632..7780894 100644
--- a/src/com/android/launcher3/popup/PopupDataProvider.java
+++ b/src/com/android/launcher3/popup/PopupDataProvider.java
@@ -58,8 +58,11 @@
     private HashMap<ComponentKey, Integer> mDeepShortcutMap = new HashMap<>();
     /** Maps packages to their DotInfo's . */
     private Map<PackageUserKey, DotInfo> mPackageUserToDotInfos = new HashMap<>();
-    /** Maps packages to their Widgets */
+
+    /** All installed widgets. */
     private List<WidgetsListBaseEntry> mAllWidgets = List.of();
+    /** Widgets that can be recommended to the users. */
+    private List<ItemInfo> mRecommendedWidgets = List.of();
 
     private PopupDataChangeListener mChangeListener = PopupDataChangeListener.INSTANCE;
 
@@ -187,6 +190,15 @@
         notificationListener.cancelNotificationFromLauncher(notificationKey);
     }
 
+    /**
+     * Sets a list of recommended widgets ordered by their order of appearance in the widgets
+     * recommendation UI.
+     */
+    public void setRecommendedWidgets(List<ItemInfo> recommendedWidgets) {
+        mRecommendedWidgets = recommendedWidgets;
+        mChangeListener.onRecommendedWidgetsBound();
+    }
+
     public void setAllWidgets(List<WidgetsListBaseEntry> allWidgets) {
         mAllWidgets = allWidgets;
         mChangeListener.onWidgetsBound();
@@ -200,6 +212,21 @@
         return mAllWidgets;
     }
 
+    /** Returns a list of recommended widgets. */
+    public List<WidgetItem> getRecommendedWidgets() {
+        HashMap<ComponentKey, WidgetItem> allWidgetItems = new HashMap<>();
+        mAllWidgets.stream()
+                .filter(entry -> entry instanceof WidgetsListContentEntry)
+                .forEach(entry -> ((WidgetsListContentEntry) entry).mWidgets
+                        .forEach(widget -> allWidgetItems.put(
+                                new ComponentKey(widget.componentName, widget.user), widget)));
+        return mRecommendedWidgets.stream()
+                .map(recommendedWidget -> allWidgetItems.get(
+                        new ComponentKey(recommendedWidget.getTargetComponent(),
+                                recommendedWidget.user)))
+                .collect(Collectors.toList());
+    }
+
     public List<WidgetItem> getWidgetsForPackageUser(PackageUserKey packageUserKey) {
         return mAllWidgets.stream()
                 .filter(row -> row instanceof WidgetsListContentEntry
@@ -244,5 +271,8 @@
         default void trimNotifications(Map<PackageUserKey, DotInfo> updatedDots) { }
 
         default void onWidgetsBound() { }
+
+        /** A callback to get notified when recommended widgets are bound. */
+        default void onRecommendedWidgetsBound() { }
     }
 }