Allow 2x2 and 3x3 to be migrated after restore am: 238aaee059

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15992138

Change-Id: I8cf6ed0cdfc12678259a31194eb94992822a61cd

src/com/android/launcher3/InvariantDeviceProfile.java

@@ -46,6 +46,7 @@ import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
 
 import com.android.launcher3.model.DeviceGridState;
+import com.android.launcher3.provider.RestoreDbTask;
 import com.android.launcher3.util.DisplayController;
 import com.android.launcher3.util.DisplayController.Info;
 import com.android.launcher3.util.IntArray;
@@ -204,11 +205,11 @@ public class InvariantDeviceProfile {
         // Get the display info based on default display and interpolate it to existing display
         DisplayOption defaultDisplayOption = invDistWeightedInterpolate(
                 DisplayController.INSTANCE.get(context).getInfo(),
-                getPredefinedDeviceProfiles(context, gridName, false), false);
+                getPredefinedDeviceProfiles(context, gridName, false, false), false);
 
         Info myInfo = new Info(context, display);
         DisplayOption myDisplayOption = invDistWeightedInterpolate(
-                myInfo, getPredefinedDeviceProfiles(context, gridName, false), false);
+                myInfo, getPredefinedDeviceProfiles(context, gridName, false, false), false);
 
         DisplayOption result = new DisplayOption(defaultDisplayOption.grid)
                 .add(myDisplayOption);
@@ -227,6 +228,29 @@ public class InvariantDeviceProfile {
         initGrid(context, myInfo, result, false);
     }
 
+    /**
+     * Reinitialize the current grid after a restore, where some grids might now be disabled.
+     */
+    public void reinitializeAfterRestore(Context context) {
+        String currentDbFile = dbFile;
+        String gridName = getCurrentGridName(context);
+        String newGridName = initGrid(context, gridName);
+        if (!newGridName.equals(gridName)) {
+            Log.d(TAG, "Restored grid is disabled : " + gridName
+                    + ", migrating to: " + newGridName
+                    + ", removing all other grid db files");
+            for (String gridDbFile : LauncherFiles.GRID_DB_FILES) {
+                if (gridDbFile.equals(currentDbFile)) {
+                    continue;
+                }
+                if (context.getDatabasePath(gridDbFile).delete()) {
+                    Log.d(TAG, "Removed old grid db file: " + gridDbFile);
+                }
+            }
+            setCurrentGrid(context, gridName);
+        }
+    }
+
     public static String getCurrentGridName(Context context) {
         return Utilities.isGridOptionsEnabled(context)
                 ? Utilities.getPrefs(context).getString(KEY_IDP_GRID_NAME, null) : null;
@@ -240,7 +264,8 @@ public class InvariantDeviceProfile {
                 displayInfo.supportedBounds.size() >= 4 && ENABLE_TWO_PANEL_HOME.get();
 
         ArrayList<DisplayOption> allOptions =
-                getPredefinedDeviceProfiles(context, gridName, isSplitDisplay);
+                getPredefinedDeviceProfiles(context, gridName, isSplitDisplay,
+                        RestoreDbTask.isPending(context));
         DisplayOption displayOption =
                 invDistWeightedInterpolate(displayInfo, allOptions, isSplitDisplay);
         initGrid(context, displayInfo, displayOption, isSplitDisplay);
@@ -366,7 +391,7 @@ public class InvariantDeviceProfile {
     }
 
     private static ArrayList<DisplayOption> getPredefinedDeviceProfiles(
-            Context context, String gridName, boolean isSplitDisplay) {
+            Context context, String gridName, boolean isSplitDisplay, boolean allowDisabledGrid) {
         ArrayList<DisplayOption> profiles = new ArrayList<>();
         try (XmlResourceParser parser = context.getResources().getXml(R.xml.device_profiles)) {
             final int depth = parser.getDepth();
@@ -378,7 +403,7 @@ public class InvariantDeviceProfile {
 
                     GridOption gridOption =
                             new GridOption(context, Xml.asAttributeSet(parser), isSplitDisplay);
-                    if (gridOption.isEnabled) {
+                    if (gridOption.isEnabled || allowDisabledGrid) {
                         final int displayDepth = parser.getDepth();
                         while (((type = parser.next()) != XmlPullParser.END_TAG
                                 || parser.getDepth() > displayDepth)
@@ -400,7 +425,8 @@ public class InvariantDeviceProfile {
         ArrayList<DisplayOption> filteredProfiles = new ArrayList<>();
         if (!TextUtils.isEmpty(gridName)) {
             for (DisplayOption option : profiles) {
-                if (gridName.equals(option.grid.name) && option.grid.isEnabled) {
+                if (gridName.equals(option.grid.name)
+                        && (option.grid.isEnabled || allowDisabledGrid)) {
                     filteredProfiles.add(option);
                 }
             }

src/com/android/launcher3/LauncherFiles.java

@@ -1,5 +1,6 @@
 package com.android.launcher3;
 
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
@@ -29,16 +30,24 @@ public class LauncherFiles {
     public static final String WIDGET_PREVIEWS_DB = "widgetpreviews.db";
     public static final String APP_ICONS_DB = "app_icons.db";
 
-    public static final List<String> ALL_FILES = Collections.unmodifiableList(Arrays.asList(
+    public static final List<String> GRID_DB_FILES = Collections.unmodifiableList(Arrays.asList(
             LAUNCHER_DB,
             LAUNCHER_4_BY_5_DB,
             LAUNCHER_4_BY_4_DB,
             LAUNCHER_3_BY_3_DB,
-            LAUNCHER_2_BY_2_DB,
+            LAUNCHER_2_BY_2_DB));
+
+    public static final List<String> OTHER_FILES = Collections.unmodifiableList(Arrays.asList(
             BACKUP_DB,
             SHARED_PREFERENCES_KEY + XML,
             WIDGET_PREVIEWS_DB,
             MANAGED_USER_PREFERENCES_KEY + XML,
             DEVICE_PREFERENCES_KEY + XML,
             APP_ICONS_DB));
+
+    public static final List<String> ALL_FILES = Collections.unmodifiableList(
+            new ArrayList<String>() {{
+                addAll(GRID_DB_FILES);
+                addAll(OTHER_FILES);
+            }});
 }

src/com/android/launcher3/provider/RestoreDbTask.java

@@ -81,6 +81,8 @@ public class RestoreDbTask {
         // Set is pending to false irrespective of the result, so that it doesn't get
         // executed again.
         Utilities.getPrefs(context).edit().remove(RESTORED_DEVICE_TYPE).commit();
+
+        InvariantDeviceProfile.INSTANCE.get(context).reinitializeAfterRestore(context);
     }
 
     private static boolean performRestore(Context context, DatabaseHelper helper) {