Instead of popup to show letters, show private space icon on fast scrolling

Use spannableString to show the icon instead of regular letters for the private space icons.

bug:304752744
Test manual: https://drive.google.com/file/d/1LFy4-bu69Kuo8eV4erjJOsbkiQJs09kC/view?usp=sharing
Flag: None

Change-Id: I149d7aba6b0a4fdafacd2684e56827c7e1b9d724
diff --git a/res/drawable/ic_private_profile_app_scroller_badge.xml b/res/drawable/ic_private_profile_app_scroller_badge.xml
new file mode 100644
index 0000000..b52a277
--- /dev/null
+++ b/res/drawable/ic_private_profile_app_scroller_badge.xml
@@ -0,0 +1,28 @@
+<!--
+  ~ Copyright (C) 2024 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.
+  -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android" xmlns:aapt="http://schemas.android.com/aapt"
+    android:viewportWidth="32"
+    android:viewportHeight="32"
+    android:width="32dp"
+    android:height="32dp">
+    <path
+        android:pathData="M16.0007 2.66602L5.33398 6.66602V14.786C5.33398 21.5194 9.88065 27.7993 16.0007 29.3327C22.1207 27.7993 26.6673 21.5194 26.6673 14.786V6.66602L16.0007 2.66602ZM20.0007 19.9993V22.666H17.334V23.9993H14.6673V17.1193C12.7473 16.546 11.334 14.786 11.334 12.666C11.334 10.0927 13.4273 7.99935 16.0007 7.99935C18.574 7.99935 20.6673 10.0927 20.6673 12.666C20.6673 14.7727 19.254 16.546 17.334 17.1193V19.9993H20.0007Z"
+        android:fillType="evenOdd"
+        android:fillColor="@android:color/white" />
+    <path
+        android:pathData="M16 14.666C17.1046 14.666 18 13.7706 18 12.666C18 11.5614 17.1046 10.666 16 10.666C14.8954 10.666 14 11.5614 14 12.666C14 13.7706 14.8954 14.666 16 14.666Z"
+        android:fillColor="@android:color/white" />
+</vector>
diff --git a/src/com/android/launcher3/FastScrollRecyclerView.java b/src/com/android/launcher3/FastScrollRecyclerView.java
index 51c7a05..eff748a 100644
--- a/src/com/android/launcher3/FastScrollRecyclerView.java
+++ b/src/com/android/launcher3/FastScrollRecyclerView.java
@@ -155,7 +155,7 @@
      * Maps the touch (from 0..1) to the adapter position that should be visible.
      * <p>Override in each subclass of this base class.
      */
-    public abstract String scrollToPositionAtProgress(float touchFraction);
+    public abstract CharSequence scrollToPositionAtProgress(float touchFraction);
 
     /**
      * Updates the bounds for the scrollbar.
@@ -193,14 +193,4 @@
         }
         scrollToPosition(0);
     }
-
-    /**
-     * Scrolls this recycler view to the bottom with easing and duration.
-     */
-    public void scrollToBottomWithMotion(int duration) {
-        if (mScrollbar != null) {
-            mScrollbar.reattachThumbToScroll();
-        }
-        smoothScrollBy(0, getAvailableScrollHeight(), Interpolators.EMPHASIZED, duration);
-    }
 }
diff --git a/src/com/android/launcher3/allapps/AllAppsRecyclerView.java b/src/com/android/launcher3/allapps/AllAppsRecyclerView.java
index 36a44cc..ba34f59 100644
--- a/src/com/android/launcher3/allapps/AllAppsRecyclerView.java
+++ b/src/com/android/launcher3/allapps/AllAppsRecyclerView.java
@@ -180,7 +180,7 @@
      * Maps the touch (from 0..1) to the adapter position that should be visible.
      */
     @Override
-    public String scrollToPositionAtProgress(float touchFraction) {
+    public CharSequence scrollToPositionAtProgress(float touchFraction) {
         int rowCount = mApps.getNumAppRows();
         if (rowCount == 0) {
             return "";
diff --git a/src/com/android/launcher3/allapps/AlphabeticalAppsList.java b/src/com/android/launcher3/allapps/AlphabeticalAppsList.java
index 4d4b8d2..60df7c5 100644
--- a/src/com/android/launcher3/allapps/AlphabeticalAppsList.java
+++ b/src/com/android/launcher3/allapps/AlphabeticalAppsList.java
@@ -22,6 +22,10 @@
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_PRIVATE_SPACE_USER_INSTALLED_APPS_COUNT;
 
 import android.content.Context;
+import android.graphics.drawable.Drawable;
+import android.text.Spannable;
+import android.text.SpannableString;
+import android.text.style.ImageSpan;
 
 import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
@@ -65,11 +69,11 @@
      */
     public static class FastScrollSectionInfo {
         // The section name
-        public final String sectionName;
+        public final CharSequence sectionName;
         // The item position
         public final int position;
 
-        public FastScrollSectionInfo(String sectionName, int position) {
+        public FastScrollSectionInfo(CharSequence sectionName, int position) {
             this.sectionName = sectionName;
             this.position = position;
         }
@@ -93,6 +97,7 @@
 
     // The of ordered component names as a result of a search query
     private final ArrayList<AdapterItem> mSearchResults = new ArrayList<>();
+    private final SpannableString mPrivateProfileAppScrollerBadge;
     private BaseAllAppsAdapter<T> mAdapter;
     private AppInfoComparator mAppNameComparator;
     private int mNumAppsPerRowAllApps;
@@ -110,6 +115,10 @@
         if (mAllAppsStore != null) {
             mAllAppsStore.addUpdateListener(this);
         }
+        mPrivateProfileAppScrollerBadge = new SpannableString(" ");
+        mPrivateProfileAppScrollerBadge.setSpan(new ImageSpan(context,
+                        R.drawable.ic_private_profile_app_scroller_badge, ImageSpan.ALIGN_CENTER),
+                0, 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
     }
 
     /** Set the number of apps per row when device profile changes. */
@@ -383,6 +392,7 @@
     private int addAppsWithSections(List<AppInfo> appList, int startPosition) {
         String lastSectionName = null;
         boolean hasPrivateApps = false;
+        int position = startPosition;
         if (mPrivateProviderManager != null) {
             hasPrivateApps = appList.stream().
                     allMatch(mPrivateProviderManager.getItemInfoMatcher());
@@ -403,11 +413,12 @@
             // Create a new section if the section names do not match
             if (!sectionName.equals(lastSectionName)) {
                 lastSectionName = sectionName;
-                mFastScrollerSections.add(new FastScrollSectionInfo(sectionName, startPosition));
+                mFastScrollerSections.add(new FastScrollSectionInfo(hasPrivateApps ?
+                        mPrivateProfileAppScrollerBadge : sectionName, position));
             }
-            startPosition++;
+            position++;
         }
-        return startPosition;
+        return position;
     }
 
     /**
diff --git a/src/com/android/launcher3/views/RecyclerViewFastScroller.java b/src/com/android/launcher3/views/RecyclerViewFastScroller.java
index 8408cc7..df8f635 100644
--- a/src/com/android/launcher3/views/RecyclerViewFastScroller.java
+++ b/src/com/android/launcher3/views/RecyclerViewFastScroller.java
@@ -30,6 +30,7 @@
 import android.graphics.Point;
 import android.graphics.Rect;
 import android.graphics.RectF;
+import android.text.TextUtils;
 import android.util.AttributeSet;
 import android.util.Log;
 import android.util.Property;
@@ -121,7 +122,7 @@
     // Fast scroller popup
     private TextView mPopupView;
     private boolean mPopupVisible;
-    private String mPopupSectionName;
+    private CharSequence mPopupSectionName;
     private Insets mSystemGestureInsets;
 
     protected FastScrollRecyclerView mRv;
@@ -307,13 +308,13 @@
         // Update the fastscroller section name at this touch position
         int bottom = mRv.getScrollbarTrackHeight() - mThumbHeight;
         float boundedY = (float) Math.max(0, Math.min(bottom, y - mTouchOffsetY));
-        String sectionName = mRv.scrollToPositionAtProgress(boundedY / bottom);
+        CharSequence sectionName = mRv.scrollToPositionAtProgress(boundedY / bottom);
         if (!sectionName.equals(mPopupSectionName)) {
             mPopupSectionName = sectionName;
             mPopupView.setText(sectionName);
             performHapticFeedback(CLOCK_TICK);
         }
-        animatePopupVisibility(!sectionName.isEmpty());
+        animatePopupVisibility(!TextUtils.isEmpty(sectionName));
         mLastTouchY = boundedY;
         setThumbOffsetY((int) mLastTouchY);
     }
diff --git a/src/com/android/launcher3/widget/picker/WidgetsRecyclerView.java b/src/com/android/launcher3/widget/picker/WidgetsRecyclerView.java
index 698e764..a47818f 100644
--- a/src/com/android/launcher3/widget/picker/WidgetsRecyclerView.java
+++ b/src/com/android/launcher3/widget/picker/WidgetsRecyclerView.java
@@ -73,7 +73,7 @@
      * Maps the touch (from 0..1) to the adapter position that should be visible.
      */
     @Override
-    public String scrollToPositionAtProgress(float touchFraction) {
+    public CharSequence scrollToPositionAtProgress(float touchFraction) {
         // Skip early if widgets are not bound.
         if (isModelNotReady()) {
             return "";