Merge "Moving LauncherAccessibilityDelegate to accessibility package" into ub-launcher3-burnaby
diff --git a/res/drawable-hdpi/ic_widget_resize_handle.png b/res/drawable-hdpi/ic_widget_resize_handle.png
new file mode 100644
index 0000000..844f3cf
--- /dev/null
+++ b/res/drawable-hdpi/ic_widget_resize_handle.png
Binary files differ
diff --git a/res/drawable-hdpi/widget_resize_frame.9.png b/res/drawable-hdpi/widget_resize_frame.9.png
new file mode 100644
index 0000000..5772672
--- /dev/null
+++ b/res/drawable-hdpi/widget_resize_frame.9.png
Binary files differ
diff --git a/res/drawable-hdpi/widget_resize_frame_holo.9.png b/res/drawable-hdpi/widget_resize_frame_holo.9.png
deleted file mode 100644
index 2d6fcf5..0000000
--- a/res/drawable-hdpi/widget_resize_frame_holo.9.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-hdpi/widget_resize_handle_bottom.png b/res/drawable-hdpi/widget_resize_handle_bottom.png
deleted file mode 100644
index f0afd61..0000000
--- a/res/drawable-hdpi/widget_resize_handle_bottom.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-hdpi/widget_resize_handle_left.png b/res/drawable-hdpi/widget_resize_handle_left.png
deleted file mode 100644
index 47613b2..0000000
--- a/res/drawable-hdpi/widget_resize_handle_left.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-hdpi/widget_resize_handle_right.png b/res/drawable-hdpi/widget_resize_handle_right.png
deleted file mode 100644
index acc28be..0000000
--- a/res/drawable-hdpi/widget_resize_handle_right.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-hdpi/widget_resize_handle_top.png b/res/drawable-hdpi/widget_resize_handle_top.png
deleted file mode 100644
index 2c60be0..0000000
--- a/res/drawable-hdpi/widget_resize_handle_top.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-hdpi/widget_resize_shadow.9.png b/res/drawable-hdpi/widget_resize_shadow.9.png
new file mode 100644
index 0000000..a67da6e
--- /dev/null
+++ b/res/drawable-hdpi/widget_resize_shadow.9.png
Binary files differ
diff --git a/res/drawable-mdpi/ic_widget_resize_handle.png b/res/drawable-mdpi/ic_widget_resize_handle.png
new file mode 100644
index 0000000..c3b287f
--- /dev/null
+++ b/res/drawable-mdpi/ic_widget_resize_handle.png
Binary files differ
diff --git a/res/drawable-mdpi/widget_resize_frame.9.png b/res/drawable-mdpi/widget_resize_frame.9.png
new file mode 100644
index 0000000..8bc8a5c
--- /dev/null
+++ b/res/drawable-mdpi/widget_resize_frame.9.png
Binary files differ
diff --git a/res/drawable-mdpi/widget_resize_frame_holo.9.png b/res/drawable-mdpi/widget_resize_frame_holo.9.png
deleted file mode 100644
index 028bd62..0000000
--- a/res/drawable-mdpi/widget_resize_frame_holo.9.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-mdpi/widget_resize_handle_bottom.png b/res/drawable-mdpi/widget_resize_handle_bottom.png
deleted file mode 100644
index c838bf4..0000000
--- a/res/drawable-mdpi/widget_resize_handle_bottom.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-mdpi/widget_resize_handle_left.png b/res/drawable-mdpi/widget_resize_handle_left.png
deleted file mode 100644
index ff0b0d3..0000000
--- a/res/drawable-mdpi/widget_resize_handle_left.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-mdpi/widget_resize_handle_right.png b/res/drawable-mdpi/widget_resize_handle_right.png
deleted file mode 100644
index fc4808e..0000000
--- a/res/drawable-mdpi/widget_resize_handle_right.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-mdpi/widget_resize_handle_top.png b/res/drawable-mdpi/widget_resize_handle_top.png
deleted file mode 100644
index 3b1df01..0000000
--- a/res/drawable-mdpi/widget_resize_handle_top.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-mdpi/widget_resize_shadow.9.png b/res/drawable-mdpi/widget_resize_shadow.9.png
new file mode 100644
index 0000000..2bae2b6
--- /dev/null
+++ b/res/drawable-mdpi/widget_resize_shadow.9.png
Binary files differ
diff --git a/res/drawable-xhdpi/ic_widget_resize_handle.png b/res/drawable-xhdpi/ic_widget_resize_handle.png
new file mode 100644
index 0000000..f445a1c
--- /dev/null
+++ b/res/drawable-xhdpi/ic_widget_resize_handle.png
Binary files differ
diff --git a/res/drawable-xhdpi/widget_resize_frame.9.png b/res/drawable-xhdpi/widget_resize_frame.9.png
new file mode 100644
index 0000000..e6cf0af
--- /dev/null
+++ b/res/drawable-xhdpi/widget_resize_frame.9.png
Binary files differ
diff --git a/res/drawable-xhdpi/widget_resize_frame_holo.9.png b/res/drawable-xhdpi/widget_resize_frame_holo.9.png
deleted file mode 100644
index 76cec60..0000000
--- a/res/drawable-xhdpi/widget_resize_frame_holo.9.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-xhdpi/widget_resize_handle_bottom.png b/res/drawable-xhdpi/widget_resize_handle_bottom.png
deleted file mode 100644
index 19437d7..0000000
--- a/res/drawable-xhdpi/widget_resize_handle_bottom.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-xhdpi/widget_resize_handle_left.png b/res/drawable-xhdpi/widget_resize_handle_left.png
deleted file mode 100644
index 28c5487..0000000
--- a/res/drawable-xhdpi/widget_resize_handle_left.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-xhdpi/widget_resize_handle_right.png b/res/drawable-xhdpi/widget_resize_handle_right.png
deleted file mode 100644
index 4f672a6..0000000
--- a/res/drawable-xhdpi/widget_resize_handle_right.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-xhdpi/widget_resize_handle_top.png b/res/drawable-xhdpi/widget_resize_handle_top.png
deleted file mode 100644
index e866c00..0000000
--- a/res/drawable-xhdpi/widget_resize_handle_top.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-xhdpi/widget_resize_shadow.9.png b/res/drawable-xhdpi/widget_resize_shadow.9.png
new file mode 100644
index 0000000..99e9e78
--- /dev/null
+++ b/res/drawable-xhdpi/widget_resize_shadow.9.png
Binary files differ
diff --git a/res/drawable-xxhdpi/ic_widget_resize_handle.png b/res/drawable-xxhdpi/ic_widget_resize_handle.png
new file mode 100644
index 0000000..144cac9
--- /dev/null
+++ b/res/drawable-xxhdpi/ic_widget_resize_handle.png
Binary files differ
diff --git a/res/drawable-xxhdpi/widget_resize_frame.9.png b/res/drawable-xxhdpi/widget_resize_frame.9.png
new file mode 100644
index 0000000..7a49d01
--- /dev/null
+++ b/res/drawable-xxhdpi/widget_resize_frame.9.png
Binary files differ
diff --git a/res/drawable-xxhdpi/widget_resize_frame_holo.9.png b/res/drawable-xxhdpi/widget_resize_frame_holo.9.png
deleted file mode 100644
index 1681387..0000000
--- a/res/drawable-xxhdpi/widget_resize_frame_holo.9.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-xxhdpi/widget_resize_handle_bottom.png b/res/drawable-xxhdpi/widget_resize_handle_bottom.png
deleted file mode 100644
index d549fcd..0000000
--- a/res/drawable-xxhdpi/widget_resize_handle_bottom.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-xxhdpi/widget_resize_handle_left.png b/res/drawable-xxhdpi/widget_resize_handle_left.png
deleted file mode 100644
index dd56dad..0000000
--- a/res/drawable-xxhdpi/widget_resize_handle_left.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-xxhdpi/widget_resize_handle_right.png b/res/drawable-xxhdpi/widget_resize_handle_right.png
deleted file mode 100644
index 296a1c1..0000000
--- a/res/drawable-xxhdpi/widget_resize_handle_right.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-xxhdpi/widget_resize_handle_top.png b/res/drawable-xxhdpi/widget_resize_handle_top.png
deleted file mode 100644
index e86270a..0000000
--- a/res/drawable-xxhdpi/widget_resize_handle_top.png
+++ /dev/null
Binary files differ
diff --git a/res/drawable-xxhdpi/widget_resize_shadow.9.png b/res/drawable-xxhdpi/widget_resize_shadow.9.png
new file mode 100644
index 0000000..ae0f564
--- /dev/null
+++ b/res/drawable-xxhdpi/widget_resize_shadow.9.png
Binary files differ
diff --git a/res/drawable-xxxhdpi/ic_widget_resize_handle.png b/res/drawable-xxxhdpi/ic_widget_resize_handle.png
new file mode 100644
index 0000000..4bde6b9
--- /dev/null
+++ b/res/drawable-xxxhdpi/ic_widget_resize_handle.png
Binary files differ
diff --git a/res/drawable-xxxhdpi/widget_resize_frame.9.png b/res/drawable-xxxhdpi/widget_resize_frame.9.png
new file mode 100644
index 0000000..9b711f2
--- /dev/null
+++ b/res/drawable-xxxhdpi/widget_resize_frame.9.png
Binary files differ
diff --git a/res/drawable-xxxhdpi/widget_resize_shadow.9.png b/res/drawable-xxxhdpi/widget_resize_shadow.9.png
new file mode 100644
index 0000000..defb311
--- /dev/null
+++ b/res/drawable-xxxhdpi/widget_resize_shadow.9.png
Binary files differ
diff --git a/res/layout/apps_grid_icon_view.xml b/res/layout/apps_grid_icon_view.xml
index 67d7d50..7165f38 100644
--- a/res/layout/apps_grid_icon_view.xml
+++ b/res/layout/apps_grid_icon_view.xml
@@ -25,6 +25,5 @@
     android:paddingBottom="@dimen/apps_icon_top_bottom_padding"
     android:focusable="true"
     android:background="@drawable/focusable_view_bg"
-    launcher:deferShadowGeneration="true"
     launcher:iconDisplay="all_apps" />
 
diff --git a/res/layout/apps_list_view.xml b/res/layout/apps_list_view.xml
index 03ba646..6f9be05 100644
--- a/res/layout/apps_list_view.xml
+++ b/res/layout/apps_list_view.xml
@@ -14,7 +14,8 @@
      See the License for the specific language governing permissions and
      limitations under the License.
 -->
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<com.android.launcher3.AppsRecyclerViewContainer
+    xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/apps_list"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
@@ -101,4 +102,4 @@
             android:src="@drawable/ic_search_grey" />
     </FrameLayout>
 
-</FrameLayout>
\ No newline at end of file
+</com.android.launcher3.AppsRecyclerViewContainer>
\ No newline at end of file
diff --git a/res/layout/apps_prediction_bar_icon_view.xml b/res/layout/apps_prediction_bar_icon_view.xml
index 4a6f157..1e75d14 100644
--- a/res/layout/apps_prediction_bar_icon_view.xml
+++ b/res/layout/apps_prediction_bar_icon_view.xml
@@ -24,6 +24,5 @@
     android:layout_weight="1"
     android:focusable="true"
     android:background="@drawable/focusable_view_bg"
-    launcher:deferShadowGeneration="true"
     launcher:iconDisplay="all_apps" />
 
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index d2f6237..60591e1 100644
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -28,7 +28,10 @@
     <dimen name="dynamic_grid_overview_bar_item_width">80dp</dimen>
     <dimen name="dynamic_grid_overview_bar_spacer_width">20dp</dimen>
 
+<!-- App Widget resize frame -->
     <dimen name="default_widget_padding">8dp</dimen>
+    <dimen name="widget_handle_margin">13dp</dimen>
+    <dimen name="resize_frame_background_padding">24dp</dimen>
 
 <!-- Cling -->
     <dimen name="cling_migration_logo_height">240dp</dimen>
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 51ad51f..18f97c8 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -182,76 +182,76 @@
     </string>
 
 <!-- Strings for accessibility actions -->
-    <!-- Accessibility action to add an app to workspace. [CHAR_LIMIT=30] [DO NOT TRANSLATE] -->
-    <string name="action_add_to_workspace">Add to home screen</string>
+    <!-- Accessibility action to add an app to workspace. [CHAR_LIMIT=30] -->
+    <string name="action_add_to_workspace">Add to Home screen</string>
 
-    <!-- Accessibility action to move item to the current location. [CHAR_LIMIT=30] [DO NOT TRANSLATE] -->
-    <string name="action_move_here">Move here</string>
+    <!-- Accessibility action to move item to the current location. [CHAR_LIMIT=30] -->
+    <string name="action_move_here">Move item here</string>
 
-    <!-- Accessibility confirmation for item added to workspace [DO NOT TRANSLATE] -->
+    <!-- Accessibility confirmation for item added to workspace. -->
     <string name="item_added_to_workspace">Item added to home screen</string>
 
-    <!-- Accessibility confirmation for item removed [DO NOT TRANSLATE] -->
+    <!-- Accessibility confirmation for item removed. -->
     <string name="item_removed">Item removed</string>
 
-    <!-- Accessibility action to move an item on the workspace. [CHAR_LIMIT=30] [DO NOT TRANSLATE] -->
-    <string name="action_move">Move Item</string>
+    <!-- Accessibility action to move an item on the workspace. [CHAR_LIMIT=30] -->
+    <string name="action_move">Move item</string>
 
-    <!-- Accessibility description to move item to empty cell. [DO NOT TRANSLATE] -->
+    <!-- Accessibility description to move item to empty cell. -->
     <string name="move_to_empty_cell">Move to row <xliff:g id="number" example="1">%1$s</xliff:g> column <xliff:g id="number" example="1">%2$s</xliff:g></string>
 
-    <!-- Accessibility description to move item inside a folder. [DO NOT TRANSLATE] -->
+    <!-- Accessibility description to move item inside a folder. -->
     <string name="move_to_position">Move to position <xliff:g id="number" example="1">%1$s</xliff:g></string>
 
-    <!-- Accessibility description to move item to the hotseat. [DO NOT TRANSLATE] -->
+    <!-- Accessibility description to move item to the hotseat. -->
     <string name="move_to_hotseat_position">Move to favorites position <xliff:g id="number" example="1">%1$s</xliff:g></string>
 
-    <!-- Accessibility confirmation for item move [DO NOT TRANSLATE]-->
+    <!-- Accessibility confirmation for item move. -->
     <string name="item_moved">Item moved</string>
 
-    <!-- Accessibility description to move item into an existing folder. [DO NOT TRANSLATE]-->
+    <!-- Accessibility description to move item into an existing folder. -->
     <string name="add_to_folder">Add to folder: <xliff:g id="name" example="Games">%1$s</xliff:g></string>
 
-    <!-- Accessibility description to move item into an existing folder containing an app. [DO NOT TRANSLATE]-->
+    <!-- Accessibility description to move item into an existing folder containing an app. -->
     <string name="add_to_folder_with_app">Add to folder with <xliff:g id="name" example="Messenger">%1$s</xliff:g></string>
 
-    <!-- Accessibility confirmation for item added to folder [DO NOT TRANSLATE] -->
+    <!-- Accessibility confirmation for item added to folder. -->
     <string name="added_to_folder">Item added to folder</string>
 
-    <!-- Accessibility description to create folder with another item. [DO NOT TRANSLATE] -->
+    <!-- Accessibility description to create folder with another item. -->
     <string name="create_folder_with">Create folder with: <xliff:g id="name" example="Game">%1$s</xliff:g></string>
 
-    <!-- Accessibility confirmation for folder created [DO NOT TRANSLATE] -->
+    <!-- Accessibility confirmation for folder created. -->
     <string name="folder_created">Folder created</string>
 
-    <!-- Accessibility action to move an item from folder to workspace. [CHAR_LIMIT=30] [DO NOT TRANSLATE] -->
-    <string name="action_move_to_workspace">Move to home screen</string>
+    <!-- Accessibility action to move an item from folder to workspace. [CHAR_LIMIT=30] -->
+    <string name="action_move_to_workspace">Move to Home screen</string>
 
-    <!-- Accessibility action to move an homescreen to the left. [CHAR_LIMIT=30] [DO NOT TRANSLATE] -->
+    <!-- Accessibility action to move an homescreen to the left. [CHAR_LIMIT=30] -->
     <string name="action_move_screen_left">Move screen to left</string>
 
-    <!-- Accessibility action to move an homescreen to the right. [CHAR_LIMIT=30] [DO NOT TRANSLATE] -->
+    <!-- Accessibility action to move an homescreen to the right. [CHAR_LIMIT=30] -->
     <string name="action_move_screen_right">Move screen to right</string>
 
-    <!-- Accessibility confirmation when a screen was moved [DO NOT TRANSLATE] -->
+    <!-- Accessibility confirmation when a screen was moved. -->
     <string name="screen_moved">Screen moved</string>
 
-    <!-- Accessibility action to resize a widget [DO NOT TRANSLATE] -->
+    <!-- Accessibility action to resize a widget. [CHAR_LIMIT=30] -->
     <string name="action_resize">Resize</string>
 
-    <!-- Accessibility action to increase width of a widget [DO NOT TRANSLATE] -->
+    <!-- Accessibility action to increase width of a widget. [CHAR_LIMIT=30] -->
     <string name="action_increase_width">Increase width</string>
 
-    <!-- Accessibility action to increase height of a widget [DO NOT TRANSLATE] -->
+    <!-- Accessibility action to increase height of a widget. [CHAR_LIMIT=30] -->
     <string name="action_increase_height">Increase height</string>
 
-    <!-- Accessibility action to decrease width of a widget [DO NOT TRANSLATE] -->
+    <!-- Accessibility action to decrease width of a widget. [CHAR_LIMIT=30] -->
     <string name="action_decrease_width">Decrease width</string>
 
-    <!-- Accessibility action to decrease height of a widget [DO NOT TRANSLATE] -->
+    <!-- Accessibility action to decrease height of a widget. [CHAR_LIMIT=30] -->
     <string name="action_decrease_height">Decrease height</string>
 
-    <!-- Accessibility confirmation for widget resize [DO NOT TRANSLATE]-->
+    <!-- Accessibility confirmation for widget resize. -->
     <string name="widget_resized">Widget resized to width <xliff:g id="number" example="2">%1$s</xliff:g> height <xliff:g id="number" example="1">%2$s</xliff:g></string>
 
 </resources>
diff --git a/src/com/android/launcher3/AlphabeticalAppsList.java b/src/com/android/launcher3/AlphabeticalAppsList.java
index eff7b06..82aaeb9 100644
--- a/src/com/android/launcher3/AlphabeticalAppsList.java
+++ b/src/com/android/launcher3/AlphabeticalAppsList.java
@@ -7,6 +7,7 @@
 import com.android.launcher3.compat.AlphabeticIndexCompat;
 import com.android.launcher3.compat.UserHandleCompat;
 import com.android.launcher3.compat.UserManagerCompat;
+import com.android.launcher3.model.AppNameComparator;
 
 import java.text.Collator;
 import java.util.ArrayList;
@@ -18,96 +19,6 @@
 import java.util.Map;
 import java.util.TreeMap;
 
-
-/**
- * A private class to manage access to an app name comparator.
- */
-class AppNameComparator {
-    private final UserManagerCompat mUserManager;
-    private final Collator mCollator;
-    private final Comparator<AppInfo> mAppInfoComparator;
-    private final Comparator<String> mSectionNameComparator;
-    private HashMap<UserHandleCompat, Long> mUserSerialCache = new HashMap<>();
-
-    public AppNameComparator(Context context) {
-        mCollator = Collator.getInstance();
-        mUserManager = UserManagerCompat.getInstance(context);
-        mAppInfoComparator = new Comparator<AppInfo>() {
-            public final int compare(AppInfo a, AppInfo b) {
-                // Order by the title in the current locale
-                int result = compareTitles(a.title.toString(), b.title.toString());
-                if (result == 0) {
-                    // If two apps have the same title, then order by the component name
-                    result = a.componentName.compareTo(b.componentName);
-                    if (result == 0) {
-                        // If the two apps are the same component, then prioritize by the order that
-                        // the app user was created (prioritizing the main user's apps)
-                        if (UserHandleCompat.myUserHandle().equals(a.user)) {
-                            return -1;
-                        } else {
-                            Long aUserSerial = getAndCacheUserSerial(a.user);
-                            Long bUserSerial = getAndCacheUserSerial(b.user);
-                            return aUserSerial.compareTo(bUserSerial);
-                        }
-                    }
-                }
-                return result;
-            }
-        };
-        mSectionNameComparator = new Comparator<String>() {
-            @Override
-            public int compare(String o1, String o2) {
-                return compareTitles(o1, o2);
-            }
-        };
-    }
-
-    /**
-     * Returns a locale-aware comparator that will alphabetically order a list of applications.
-     */
-    public Comparator<AppInfo> getAppInfoComparator() {
-        // Clear the user serial cache so that we get serials as needed in the comparator
-        mUserSerialCache.clear();
-        return mAppInfoComparator;
-    }
-
-    /**
-     * Returns a locale-aware comparator that will alphabetically order a list of section names.
-     */
-    public Comparator<String> getSectionNameComparator() {
-        return mSectionNameComparator;
-    }
-
-    /**
-     * Compares two titles with the same return value semantics as Comparator.
-     */
-    private int compareTitles(String titleA, String titleB) {
-        // Ensure that we de-prioritize any titles that don't start with a linguistic letter or digit
-        boolean aStartsWithLetter = Character.isLetterOrDigit(titleA.codePointAt(0));
-        boolean bStartsWithLetter = Character.isLetterOrDigit(titleB.codePointAt(0));
-        if (aStartsWithLetter && !bStartsWithLetter) {
-            return -1;
-        } else if (!aStartsWithLetter && bStartsWithLetter) {
-            return 1;
-        }
-
-        // Order by the title in the current locale
-        return mCollator.compare(titleA, titleB);
-    }
-
-    /**
-     * Returns the user serial for this user, using a cached serial if possible.
-     */
-    private Long getAndCacheUserSerial(UserHandleCompat user) {
-        Long userSerial = mUserSerialCache.get(user);
-        if (userSerial == null) {
-            userSerial = mUserManager.getSerialNumberForUser(user);
-            mUserSerialCache.put(user, userSerial);
-        }
-        return userSerial;
-    }
-}
-
 /**
  * The alphabetically sorted list of applications.
  */
diff --git a/src/com/android/launcher3/AppWidgetResizeFrame.java b/src/com/android/launcher3/AppWidgetResizeFrame.java
index 3c698c0..e6bf525 100644
--- a/src/com/android/launcher3/AppWidgetResizeFrame.java
+++ b/src/com/android/launcher3/AppWidgetResizeFrame.java
@@ -15,24 +15,36 @@
 import android.widget.ImageView;
 
 public class AppWidgetResizeFrame extends FrameLayout {
-    private LauncherAppWidgetHostView mWidgetView;
-    private CellLayout mCellLayout;
-    private DragLayer mDragLayer;
-    private ImageView mLeftHandle;
-    private ImageView mRightHandle;
-    private ImageView mTopHandle;
-    private ImageView mBottomHandle;
+    private static final int SNAP_DURATION = 150;
+    private static final float DIMMED_HANDLE_ALPHA = 0f;
+    private static final float RESIZE_THRESHOLD = 0.66f;
+
+    private static Rect sTmpRect = new Rect();
+
+    private final Launcher mLauncher;
+    private final LauncherAppWidgetHostView mWidgetView;
+    private final CellLayout mCellLayout;
+    private final DragLayer mDragLayer;
+
+    private final ImageView mLeftHandle;
+    private final ImageView mRightHandle;
+    private final ImageView mTopHandle;
+    private final ImageView mBottomHandle;
+
+    private final Rect mWidgetPadding;
+
+    private final int mBackgroundPadding;
+    private final int mTouchTargetWidth;
+
+    private final int[] mDirectionVector = new int[2];
+    private final int[] mLastDirectionVector = new int[2];
+    private final int[] mTmpPt = new int[2];
 
     private boolean mLeftBorderActive;
     private boolean mRightBorderActive;
     private boolean mTopBorderActive;
     private boolean mBottomBorderActive;
 
-    private int mWidgetPaddingLeft;
-    private int mWidgetPaddingRight;
-    private int mWidgetPaddingTop;
-    private int mWidgetPaddingBottom;
-
     private int mBaselineWidth;
     private int mBaselineHeight;
     private int mBaselineX;
@@ -48,30 +60,9 @@
     private int mDeltaXAddOn;
     private int mDeltaYAddOn;
 
-    private int mBackgroundPadding;
-    private int mTouchTargetWidth;
-
     private int mTopTouchRegionAdjustment = 0;
     private int mBottomTouchRegionAdjustment = 0;
 
-    int[] mDirectionVector = new int[2];
-    int[] mLastDirectionVector = new int[2];
-    int[] mTmpPt = new int[2];
-
-    final int SNAP_DURATION = 150;
-    final int BACKGROUND_PADDING = 24;
-    final float DIMMED_HANDLE_ALPHA = 0f;
-    final float RESIZE_THRESHOLD = 0.66f;
-
-    private static Rect mTmpRect = new Rect();
-
-    public static final int LEFT = 0;
-    public static final int TOP = 1;
-    public static final int RIGHT = 2;
-    public static final int BOTTOM = 3;
-
-    private Launcher mLauncher;
-
     public AppWidgetResizeFrame(Context context,
             LauncherAppWidgetHostView widgetView, CellLayout cellLayout, DragLayer dragLayer) {
 
@@ -87,49 +78,49 @@
         mMinHSpan = info.minSpanX;
         mMinVSpan = info.minSpanY;
 
-        setBackgroundResource(R.drawable.widget_resize_frame_holo);
+        setBackgroundResource(R.drawable.widget_resize_shadow);
+        setForeground(getResources().getDrawable(R.drawable.widget_resize_frame));
         setPadding(0, 0, 0, 0);
 
+        final int handleMargin = getResources().getDimensionPixelSize(R.dimen.widget_handle_margin);
         LayoutParams lp;
         mLeftHandle = new ImageView(context);
-        mLeftHandle.setImageResource(R.drawable.widget_resize_handle_left);
-        lp = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, 
+        mLeftHandle.setImageResource(R.drawable.ic_widget_resize_handle);
+        lp = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT,
                 Gravity.LEFT | Gravity.CENTER_VERTICAL);
+        lp.leftMargin = handleMargin;
         addView(mLeftHandle, lp);
 
         mRightHandle = new ImageView(context);
-        mRightHandle.setImageResource(R.drawable.widget_resize_handle_right);
-        lp = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, 
+        mRightHandle.setImageResource(R.drawable.ic_widget_resize_handle);
+        lp = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT,
                 Gravity.RIGHT | Gravity.CENTER_VERTICAL);
+        lp.rightMargin = handleMargin;
         addView(mRightHandle, lp);
 
         mTopHandle = new ImageView(context);
-        mTopHandle.setImageResource(R.drawable.widget_resize_handle_top);
-        lp = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, 
+        mTopHandle.setImageResource(R.drawable.ic_widget_resize_handle);
+        lp = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT,
                 Gravity.CENTER_HORIZONTAL | Gravity.TOP);
+        lp.topMargin = handleMargin;
         addView(mTopHandle, lp);
 
         mBottomHandle = new ImageView(context);
-        mBottomHandle.setImageResource(R.drawable.widget_resize_handle_bottom);
-        lp = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, 
+        mBottomHandle.setImageResource(R.drawable.ic_widget_resize_handle);
+        lp = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT,
                 Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM);
+        lp.bottomMargin = handleMargin;
         addView(mBottomHandle, lp);
 
-        Rect p = new Rect(0, 0, 0, 0);
         if (!info.isCustomWidget) {
-            p = AppWidgetHostView.getDefaultPaddingForWidget(context,
+            mWidgetPadding = AppWidgetHostView.getDefaultPaddingForWidget(context,
                     widgetView.getAppWidgetInfo().provider, null);
         } else {
             Resources r = context.getResources();
             int padding = r.getDimensionPixelSize(R.dimen.default_widget_padding);
-            p.set(padding, padding, padding, padding);
+            mWidgetPadding = new Rect(padding, padding, padding, padding);
         }
 
-        mWidgetPaddingLeft = p.left;
-        mWidgetPaddingTop = p.top;
-        mWidgetPaddingRight = p.right;
-        mWidgetPaddingBottom = p.bottom;
-
         if (mResizeMode == AppWidgetProviderInfo.RESIZE_HORIZONTAL) {
             mTopHandle.setVisibility(GONE);
             mBottomHandle.setVisibility(GONE);
@@ -138,8 +129,8 @@
             mRightHandle.setVisibility(GONE);
         }
 
-        final float density = mLauncher.getResources().getDisplayMetrics().density;
-        mBackgroundPadding = (int) Math.ceil(density * BACKGROUND_PADDING);
+        mBackgroundPadding = getResources()
+                .getDimensionPixelSize(R.dimen.resize_frame_background_padding);
         mTouchTargetWidth = 2 * mBackgroundPadding;
 
         // When we create the resize frame, we first mark all cells as unoccupied. The appropriate
@@ -344,9 +335,9 @@
 
     static void updateWidgetSizeRanges(AppWidgetHostView widgetView, Launcher launcher,
             int spanX, int spanY) {
-        getWidgetSizeRanges(launcher, spanX, spanY, mTmpRect);
-        widgetView.updateAppWidgetSize(null, mTmpRect.left, mTmpRect.top,
-                mTmpRect.right, mTmpRect.bottom);
+        getWidgetSizeRanges(launcher, spanX, spanY, sTmpRect);
+        widgetView.updateAppWidgetSize(null, sTmpRect.left, sTmpRect.top,
+                sTmpRect.right, sTmpRect.bottom);
     }
 
     public static Rect getWidgetSizeRanges(Launcher launcher, int spanX, int spanY, Rect rect) {
@@ -404,19 +395,19 @@
 
     public void snapToWidget(boolean animate) {
         final DragLayer.LayoutParams lp = (DragLayer.LayoutParams) getLayoutParams();
-        int newWidth = mWidgetView.getWidth() + 2 * mBackgroundPadding - mWidgetPaddingLeft -
-                mWidgetPaddingRight;
-        int newHeight = mWidgetView.getHeight() + 2 * mBackgroundPadding - mWidgetPaddingTop -
-                mWidgetPaddingBottom;
+        int newWidth = mWidgetView.getWidth() + 2 * mBackgroundPadding
+                - mWidgetPadding.left - mWidgetPadding.right;
+        int newHeight = mWidgetView.getHeight() + 2 * mBackgroundPadding
+                - mWidgetPadding.top - mWidgetPadding.bottom;
 
         mTmpPt[0] = mWidgetView.getLeft();
         mTmpPt[1] = mWidgetView.getTop();
         mDragLayer.getDescendantCoordRelativeToSelf(mCellLayout.getShortcutsAndWidgets(), mTmpPt);
 
-        int newX = mTmpPt[0] - mBackgroundPadding + mWidgetPaddingLeft;
-        int newY = mTmpPt[1] - mBackgroundPadding + mWidgetPaddingTop;
+        int newX = mTmpPt[0] - mBackgroundPadding + mWidgetPadding.left;
+        int newY = mTmpPt[1] - mBackgroundPadding + mWidgetPadding.top;
 
-        // We need to make sure the frame's touchable regions lie fully within the bounds of the 
+        // We need to make sure the frame's touchable regions lie fully within the bounds of the
         // DragLayer. We allow the actual handles to be clipped, but we shift the touch regions
         // down accordingly to provide a proper touch target.
         if (newY < 0) {
diff --git a/src/com/android/launcher3/AppsGridAdapter.java b/src/com/android/launcher3/AppsGridAdapter.java
index d5a411e..580930c 100644
--- a/src/com/android/launcher3/AppsGridAdapter.java
+++ b/src/com/android/launcher3/AppsGridAdapter.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright (C) 2015 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;
 
 import android.content.Context;
diff --git a/src/com/android/launcher3/AppsRecyclerViewContainer.java b/src/com/android/launcher3/AppsRecyclerViewContainer.java
new file mode 100644
index 0000000..cf4beca
--- /dev/null
+++ b/src/com/android/launcher3/AppsRecyclerViewContainer.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2015 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;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.util.AttributeSet;
+import android.view.ViewGroup;
+import android.widget.FrameLayout;
+
+import com.android.launcher3.BubbleTextView.BubbleTextShadowHandler;
+
+public class AppsRecyclerViewContainer extends FrameLayout implements BubbleTextShadowHandler {
+
+    private final ClickShadowView mTouchFeedbackView;
+
+    public AppsRecyclerViewContainer(Context context) {
+        this(context, null);
+    }
+
+    public AppsRecyclerViewContainer(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public AppsRecyclerViewContainer(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+
+        LauncherAppState app = LauncherAppState.getInstance();
+        DeviceProfile grid = app.getDynamicGrid().getDeviceProfile();
+
+        mTouchFeedbackView = new ClickShadowView(context);
+
+        // Make the feedback view large enough to hold the blur bitmap.
+        int size = grid.allAppsIconSizePx + mTouchFeedbackView.getExtraSize();
+        addView(mTouchFeedbackView, size, size);
+    }
+
+    @Override
+    public void setPressedIcon(BubbleTextView icon, Bitmap background) {
+        if (icon == null || background == null) {
+            mTouchFeedbackView.setBitmap(null);
+            mTouchFeedbackView.animate().cancel();
+        } else if (mTouchFeedbackView.setBitmap(background)) {
+            mTouchFeedbackView.alignWithIconView(icon, (ViewGroup) icon.getParent());
+            mTouchFeedbackView.animateShadow();
+        }
+    }
+}
diff --git a/src/com/android/launcher3/BubbleTextView.java b/src/com/android/launcher3/BubbleTextView.java
index d39e139..3b3b9bf 100644
--- a/src/com/android/launcher3/BubbleTextView.java
+++ b/src/com/android/launcher3/BubbleTextView.java
@@ -34,6 +34,7 @@
 import android.view.KeyEvent;
 import android.view.MotionEvent;
 import android.view.ViewConfiguration;
+import android.view.ViewParent;
 import android.widget.TextView;
 
 import com.android.launcher3.IconCache.IconLoadRequest;
@@ -276,9 +277,10 @@
         }
 
         // Only show the shadow effect when persistent pressed state is set.
-        if (getParent() instanceof ShortcutAndWidgetContainer) {
-            CellLayout layout = (CellLayout) getParent().getParent();
-            layout.setPressedIcon(this, mPressedBackground);
+        ViewParent parent = getParent();
+        if (parent != null && parent.getParent() instanceof BubbleTextShadowHandler) {
+            ((BubbleTextShadowHandler) parent.getParent()).setPressedIcon(
+                    this, mPressedBackground);
         }
 
         updateIconState();
@@ -520,4 +522,11 @@
             }
         }
     }
+
+    /**
+     * Interface to be implemented by the grand parent to allow click shadow effect.
+     */
+    public static interface BubbleTextShadowHandler {
+        void setPressedIcon(BubbleTextView icon, Bitmap background);
+    }
 }
diff --git a/src/com/android/launcher3/CellLayout.java b/src/com/android/launcher3/CellLayout.java
index a6e11b6..edcdc11 100644
--- a/src/com/android/launcher3/CellLayout.java
+++ b/src/com/android/launcher3/CellLayout.java
@@ -47,6 +47,7 @@
 import android.view.accessibility.AccessibilityEvent;
 import android.view.animation.DecelerateInterpolator;
 
+import com.android.launcher3.BubbleTextView.BubbleTextShadowHandler;
 import com.android.launcher3.FolderIcon.FolderRingAnimator;
 import com.android.launcher3.accessibility.DragAndDropAccessibilityDelegate;
 import com.android.launcher3.accessibility.FolderAccessibilityHelper;
@@ -61,7 +62,7 @@
 import java.util.HashMap;
 import java.util.Stack;
 
-public class CellLayout extends ViewGroup {
+public class CellLayout extends ViewGroup implements BubbleTextShadowHandler {
     public static final int WORKSPACE_ACCESSIBILITY_DRAG = 2;
     public static final int FOLDER_ACCESSIBILITY_DRAG = 1;
 
@@ -409,7 +410,8 @@
         invalidate();
     }
 
-    void setPressedIcon(BubbleTextView icon, Bitmap background) {
+    @Override
+    public void setPressedIcon(BubbleTextView icon, Bitmap background) {
         if (icon == null || background == null) {
             mTouchFeedbackView.setBitmap(null);
             mTouchFeedbackView.animate().cancel();
diff --git a/src/com/android/launcher3/DragLayer.java b/src/com/android/launcher3/DragLayer.java
index e8661e3..423a9a3 100644
--- a/src/com/android/launcher3/DragLayer.java
+++ b/src/com/android/launcher3/DragLayer.java
@@ -49,34 +49,35 @@
  */
 public class DragLayer extends InsettableFrameLayout {
 
+    public static final int ANIMATION_END_DISAPPEAR = 0;
+    public static final int ANIMATION_END_FADE_OUT = 1;
+    public static final int ANIMATION_END_REMAIN_VISIBLE = 2;
+
     // Scrim color without any alpha component.
     private static final int SCRIM_COLOR = Color.BLACK & 0x00FFFFFF;
 
+    private final int[] mTmpXY = new int[2];
+
     @Thunk DragController mDragController;
-    private int[] mTmpXY = new int[2];
 
     private int mXDown, mYDown;
     private Launcher mLauncher;
 
     // Variables relating to resizing widgets
-    private final ArrayList<AppWidgetResizeFrame> mResizeFrames =
-            new ArrayList<AppWidgetResizeFrame>();
+    private final ArrayList<AppWidgetResizeFrame> mResizeFrames = new ArrayList<>();
     private final boolean mIsRtl;
     private AppWidgetResizeFrame mCurrentResizeFrame;
 
     // Variables relating to animation of views after drop
     private ValueAnimator mDropAnim = null;
     private ValueAnimator mFadeOutAnim = null;
-    private TimeInterpolator mCubicEaseOutInterpolator = new DecelerateInterpolator(1.5f);
+    private final TimeInterpolator mCubicEaseOutInterpolator = new DecelerateInterpolator(1.5f);
     @Thunk DragView mDropView = null;
     @Thunk int mAnchorViewInitialScrollX = 0;
     @Thunk View mAnchorView = null;
 
     private boolean mHoverPointClosesFolder = false;
-    private Rect mHitRect = new Rect();
-    public static final int ANIMATION_END_DISAPPEAR = 0;
-    public static final int ANIMATION_END_FADE_OUT = 1;
-    public static final int ANIMATION_END_REMAIN_VISIBLE = 2;
+    private final Rect mHitRect = new Rect();
 
     private TouchCompleteListener mTouchCompleteListener;
 
@@ -88,6 +89,7 @@
     private float mBackgroundAlpha = 0;
 
     // Related to adjacent page hints
+    private final Rect mScrollChildPosition = new Rect();
     private boolean mInScrollArea;
     private boolean mShowPageHints;
     private Drawable mLeftHoverDrawable;
@@ -915,6 +917,9 @@
 
     void showPageHints() {
         mShowPageHints = true;
+        Workspace workspace = mLauncher.getWorkspace();
+        getDescendantRectRelativeToSelf(workspace.getChildAt(workspace.getChildCount() - 1),
+                mScrollChildPosition);
         invalidate();
     }
 
@@ -938,10 +943,6 @@
         if (mShowPageHints) {
             Workspace workspace = mLauncher.getWorkspace();
             int width = getMeasuredWidth();
-            Rect childRect = new Rect();
-            getDescendantRectRelativeToSelf(workspace.getChildAt(workspace.getChildCount() - 1),
-                    childRect);
-
             int page = workspace.getNextPage();
             CellLayout leftPage = (CellLayout) workspace.getChildAt(mIsRtl ? page + 1 : page - 1);
             CellLayout rightPage = (CellLayout) workspace.getChildAt(mIsRtl ? page - 1 : page + 1);
@@ -949,15 +950,15 @@
             if (leftPage != null && leftPage.isDragTarget()) {
                 Drawable left = mInScrollArea && leftPage.getIsDragOverlapping() ?
                         mLeftHoverDrawableActive : mLeftHoverDrawable;
-                left.setBounds(0, childRect.top,
-                        left.getIntrinsicWidth(), childRect.bottom);
+                left.setBounds(0, mScrollChildPosition.top,
+                        left.getIntrinsicWidth(), mScrollChildPosition.bottom);
                 left.draw(canvas);
             }
             if (rightPage != null && rightPage.isDragTarget()) {
                 Drawable right = mInScrollArea && rightPage.getIsDragOverlapping() ?
                         mRightHoverDrawableActive : mRightHoverDrawable;
                 right.setBounds(width - right.getIntrinsicWidth(),
-                        childRect.top, width, childRect.bottom);
+                        mScrollChildPosition.top, width, mScrollChildPosition.bottom);
                 right.draw(canvas);
             }
         }
diff --git a/src/com/android/launcher3/HolographicOutlineHelper.java b/src/com/android/launcher3/HolographicOutlineHelper.java
index 4a04d03..5ff85d6 100644
--- a/src/com/android/launcher3/HolographicOutlineHelper.java
+++ b/src/com/android/launcher3/HolographicOutlineHelper.java
@@ -157,6 +157,9 @@
 
     Bitmap createMediumDropShadow(BubbleTextView view) {
         Drawable icon = view.getIcon();
+        if (icon == null) {
+            return null;
+        }
         Rect rect = icon.getBounds();
 
         int bitmapWidth = (int) (rect.width() * view.getScaleX());
diff --git a/src/com/android/launcher3/LauncherModel.java b/src/com/android/launcher3/LauncherModel.java
index 635c863..3e05f57 100644
--- a/src/com/android/launcher3/LauncherModel.java
+++ b/src/com/android/launcher3/LauncherModel.java
@@ -66,7 +66,6 @@
 import java.lang.ref.WeakReference;
 import java.net.URISyntaxException;
 import java.security.InvalidParameterException;
-import java.text.Collator;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
@@ -3665,39 +3664,6 @@
         return folderInfo;
     }
 
-    public static class WidgetAndShortcutNameComparator implements Comparator<Object> {
-        private final AppWidgetManagerCompat mManager;
-        private final PackageManager mPackageManager;
-        private final HashMap<Object, String> mLabelCache;
-        private final Collator mCollator;
-
-        public WidgetAndShortcutNameComparator(Context context) {
-            mManager = AppWidgetManagerCompat.getInstance(context);
-            mPackageManager = context.getPackageManager();
-            mLabelCache = new HashMap<Object, String>();
-            mCollator = Collator.getInstance();
-        }
-        public final int compare(Object a, Object b) {
-            String labelA, labelB;
-            if (mLabelCache.containsKey(a)) {
-                labelA = mLabelCache.get(a);
-            } else {
-                labelA = (a instanceof LauncherAppWidgetProviderInfo)
-                        ? Utilities.trim(mManager.loadLabel((LauncherAppWidgetProviderInfo) a))
-                        : Utilities.trim(((ResolveInfo) a).loadLabel(mPackageManager));
-                mLabelCache.put(a, labelA);
-            }
-            if (mLabelCache.containsKey(b)) {
-                labelB = mLabelCache.get(b);
-            } else {
-                labelB = (b instanceof LauncherAppWidgetProviderInfo)
-                        ? Utilities.trim(mManager.loadLabel((LauncherAppWidgetProviderInfo) b))
-                        : Utilities.trim(((ResolveInfo) b).loadLabel(mPackageManager));
-                mLabelCache.put(b, labelB);
-            }
-            return mCollator.compare(labelA, labelB);
-        }
-    };
 
     static boolean isValidProvider(AppWidgetProviderInfo provider) {
         return (provider != null) && (provider.provider != null)
diff --git a/src/com/android/launcher3/model/AppNameComparator.java b/src/com/android/launcher3/model/AppNameComparator.java
new file mode 100644
index 0000000..706f751
--- /dev/null
+++ b/src/com/android/launcher3/model/AppNameComparator.java
@@ -0,0 +1,105 @@
+package com.android.launcher3.model;
+
+import android.content.Context;
+
+import com.android.launcher3.AppInfo;
+import com.android.launcher3.ItemInfo;
+import com.android.launcher3.compat.UserHandleCompat;
+import com.android.launcher3.compat.UserManagerCompat;
+import java.text.Collator;
+import java.util.Comparator;
+import java.util.HashMap;
+
+/**
+ * Class to manage access to an app name comparator.
+ * <p>
+ * Used to sort application name in all apps view and widget tray view.
+ */
+public class AppNameComparator {
+    private final UserManagerCompat mUserManager;
+    private final Collator mCollator;
+    private final Comparator<ItemInfo> mAppInfoComparator;
+    private final Comparator<String> mSectionNameComparator;
+    private HashMap<UserHandleCompat, Long> mUserSerialCache = new HashMap<>();
+
+    public AppNameComparator(Context context) {
+        mCollator = Collator.getInstance();
+        mUserManager = UserManagerCompat.getInstance(context);
+        mAppInfoComparator = new Comparator<ItemInfo>() {
+
+            public final int compare(ItemInfo a, ItemInfo b) {
+                // Order by the title in the current locale
+                int result = compareTitles(a.title.toString(), b.title.toString());
+                if (result == 0 && a instanceof AppInfo && b instanceof AppInfo) {
+                    AppInfo aAppInfo = (AppInfo) a;
+                    AppInfo bAppInfo = (AppInfo) b;
+                    // If two apps have the same title, then order by the component name
+                    result = aAppInfo.componentName.compareTo(bAppInfo.componentName);
+                    if (result == 0) {
+                        // If the two apps are the same component, then prioritize by the order that
+                        // the app user was created (prioritizing the main user's apps)
+                        if (UserHandleCompat.myUserHandle().equals(a.user)) {
+                            return -1;
+                        } else {
+                            Long aUserSerial = getAndCacheUserSerial(a.user);
+                            Long bUserSerial = getAndCacheUserSerial(b.user);
+                            return aUserSerial.compareTo(bUserSerial);
+                        }
+                    }
+                }
+                return result;
+            }
+        };
+        mSectionNameComparator = new Comparator<String>() {
+            @Override
+            public int compare(String o1, String o2) {
+                return compareTitles(o1, o2);
+            }
+        };
+    }
+
+    /**
+     * Returns a locale-aware comparator that will alphabetically order a list of applications.
+     */
+    public Comparator<ItemInfo> getAppInfoComparator() {
+        // Clear the user serial cache so that we get serials as needed in the comparator
+        mUserSerialCache.clear();
+        return mAppInfoComparator;
+    }
+
+    /**
+     * Returns a locale-aware comparator that will alphabetically order a list of section names.
+     */
+    public Comparator<String> getSectionNameComparator() {
+        return mSectionNameComparator;
+    }
+
+    /**
+     * Compares two titles with the same return value semantics as Comparator.
+     */
+    private int compareTitles(String titleA, String titleB) {
+        // Ensure that we de-prioritize any titles that don't start with a linguistic letter or digit
+        boolean aStartsWithLetter = Character.isLetterOrDigit(titleA.codePointAt(0));
+        boolean bStartsWithLetter = Character.isLetterOrDigit(titleB.codePointAt(0));
+        if (aStartsWithLetter && !bStartsWithLetter) {
+            return -1;
+        } else if (!aStartsWithLetter && bStartsWithLetter) {
+            return 1;
+        }
+
+        // Order by the title in the current locale
+        return mCollator.compare(titleA, titleB);
+    }
+
+    /**
+     * Returns the user serial for this user, using a cached serial if possible.
+     */
+    private Long getAndCacheUserSerial(UserHandleCompat user) {
+        Long userSerial = mUserSerialCache.get(user);
+        if (userSerial == null) {
+            userSerial = mUserManager.getSerialNumberForUser(user);
+            mUserSerialCache.put(user, userSerial);
+        }
+        return userSerial;
+    }
+}
diff --git a/src/com/android/launcher3/model/WidgetsAndShortcutNameComparator.java b/src/com/android/launcher3/model/WidgetsAndShortcutNameComparator.java
new file mode 100644
index 0000000..7c4e806
--- /dev/null
+++ b/src/com/android/launcher3/model/WidgetsAndShortcutNameComparator.java
@@ -0,0 +1,63 @@
+package com.android.launcher3.model;
+
+import android.appwidget.AppWidgetProviderInfo;
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+
+import com.android.launcher3.LauncherAppWidgetProviderInfo;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.compat.AppWidgetManagerCompat;
+
+import java.text.Collator;
+import java.util.Comparator;
+import java.util.HashMap;
+
+public class WidgetsAndShortcutNameComparator implements Comparator<Object> {
+    private final AppWidgetManagerCompat mManager;
+    private final PackageManager mPackageManager;
+    private final HashMap<Object, String> mLabelCache;
+    private final Collator mCollator;
+
+    public WidgetsAndShortcutNameComparator(Context context) {
+        mManager = AppWidgetManagerCompat.getInstance(context);
+        mPackageManager = context.getPackageManager();
+        mLabelCache = new HashMap<Object, String>();
+        mCollator = Collator.getInstance();
+    }
+
+    @Override
+    public final int compare(Object a, Object b) {
+        String labelA, labelB;
+        if (mLabelCache.containsKey(a)) {
+            labelA = mLabelCache.get(a);
+        } else {
+            labelA = (a instanceof LauncherAppWidgetProviderInfo)
+                    ? Utilities.trim(mManager.loadLabel((LauncherAppWidgetProviderInfo) a))
+                    : Utilities.trim(((ResolveInfo) a).loadLabel(mPackageManager));
+            mLabelCache.put(a, labelA);
+        }
+        if (mLabelCache.containsKey(b)) {
+            labelB = mLabelCache.get(b);
+        } else {
+            labelB = (b instanceof LauncherAppWidgetProviderInfo)
+                    ? Utilities.trim(mManager.loadLabel((LauncherAppWidgetProviderInfo) b))
+                    : Utilities.trim(((ResolveInfo) b).loadLabel(mPackageManager));
+            mLabelCache.put(b, labelB);
+        }
+        int result = mCollator.compare(labelA, labelB);
+        if (result == 0 && a instanceof AppWidgetProviderInfo &&
+                b instanceof AppWidgetProviderInfo) {
+            AppWidgetProviderInfo aInfo = (AppWidgetProviderInfo) a;
+            AppWidgetProviderInfo bInfo = (AppWidgetProviderInfo) b;
+
+            // prioritize main user's widgets against work profile widgets.
+            if (aInfo.getProfile().equals(android.os.Process.myUserHandle())) {
+                return -1;
+            } else if (bInfo.getProfile().equals(android.os.Process.myUserHandle())) {
+                return 1;
+            }
+        }
+        return result;
+    }
+};
diff --git a/src/com/android/launcher3/widget/WidgetsModel.java b/src/com/android/launcher3/widget/WidgetsModel.java
index 71a7b94..5a920e8 100644
--- a/src/com/android/launcher3/widget/WidgetsModel.java
+++ b/src/com/android/launcher3/widget/WidgetsModel.java
@@ -10,8 +10,9 @@
 import com.android.launcher3.IconCache;
 import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.LauncherAppWidgetProviderInfo;
-import com.android.launcher3.LauncherModel.WidgetAndShortcutNameComparator;
 import com.android.launcher3.compat.UserHandleCompat;
+import com.android.launcher3.model.AppNameComparator;
+import com.android.launcher3.model.WidgetsAndShortcutNameComparator;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -40,12 +41,14 @@
     private RecyclerView.Adapter mAdapter;
 
     private Comparator mWidgetAndShortcutNameComparator;
+    private Comparator mAppNameComparator;
 
     private IconCache mIconCache;
 
     public WidgetsModel(Context context, RecyclerView.Adapter adapter) {
         mAdapter = adapter;
-        mWidgetAndShortcutNameComparator = new WidgetAndShortcutNameComparator(context);
+        mWidgetAndShortcutNameComparator = new WidgetsAndShortcutNameComparator(context);
+        mAppNameComparator = (new AppNameComparator(context)).getAppInfoComparator();
         mIconCache = LauncherAppState.getInstance().getIconCache();
     }
 
@@ -108,7 +111,7 @@
         }
 
         // sort.
-        sortPackageItemInfos();
+        Collections.sort(mPackageItemInfos, mAppNameComparator);
         for (PackageItemInfo p: mPackageItemInfos) {
             Collections.sort(mWidgetsList.get(p), mWidgetAndShortcutNameComparator);
         }
@@ -116,13 +119,4 @@
         // notify.
         mAdapter.notifyDataSetChanged();
     }
-
-    private void sortPackageItemInfos() {
-        Collections.sort(mPackageItemInfos, new Comparator<PackageItemInfo>() {
-            @Override
-            public int compare(PackageItemInfo lhs, PackageItemInfo rhs) {
-                return lhs.title.toString().compareTo(rhs.title.toString());
-            }
-        });
-    }
 }
\ No newline at end of file