1 files changed, 20 insertions, 9 deletions
diff --git a/src/com/android/customization/model/grid/GridOptionsManager.java b/src/com/android/customization/model/grid/GridOptionsManager.java
index 7f15d836..b7ee37fd 100644
--- a/src/com/android/customization/model/grid/GridOptionsManager.java
+++ b/src/com/android/customization/model/grid/GridOptionsManager.java
@@ -21,7 +21,9 @@ import android.os.Handler;
 import android.os.Looper;
 import android.util.Log;
 
+import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
+import androidx.lifecycle.LiveData;
 
 import com.android.customization.model.CustomizationManager;
 import com.android.customization.module.CustomizationInjector;
@@ -47,6 +49,7 @@ public class GridOptionsManager implements CustomizationManager<GridOption> {
 
     private final LauncherGridOptionsProvider mProvider;
     private final ThemesUserEventLogger mEventLogger;
+    private int mGridOptionSize = -1;
 
     /** Returns the {@link GridOptionsManager} instance. */
     public static GridOptionsManager getInstance(Context context) {
@@ -71,16 +74,17 @@ public class GridOptionsManager implements CustomizationManager<GridOption> {
 
     @Override
     public boolean isAvailable() {
-        int gridOptionSize = 0;
-        try {
-            gridOptionSize = sExecutorService.submit(() -> {
-                List<GridOption> gridOptions = mProvider.fetch(/* reload= */true);
-                return gridOptions == null ? 0 : gridOptions.size();
-            }).get();
-        } catch (InterruptedException | ExecutionException e) {
-            Log.w(TAG, "could not get gridOptionSize", e);
+        if (mGridOptionSize < 0) {
+            try {
+                mGridOptionSize = sExecutorService.submit(() -> {
+                    List<GridOption> gridOptions = mProvider.fetch(/* reload= */true);
+                    return gridOptions == null ? 0 : gridOptions.size();
+                }).get();
+            } catch (InterruptedException | ExecutionException e) {
+                Log.w(TAG, "could not get gridOptionSize", e);
+            }
         }
-        return gridOptionSize > 1 && mProvider.areGridsAvailable();
+        return mGridOptionSize > 1 && mProvider.areGridsAvailable();
     }
 
     @Override
@@ -110,6 +114,13 @@ public class GridOptionsManager implements CustomizationManager<GridOption> {
         });
     }
 
+    /**
+     * Returns an observable that receives a new value each time that the grid options are changed.
+     */
+    public LiveData<Object> getOptionChangeObservable(@Nullable Handler handler) {
+        return mProvider.getOptionChangeObservable(handler);
+    }
+
     /** Call through content provider API to render preview */
     public void renderPreview(Bundle bundle, String gridName,
             PreviewUtils.WorkspacePreviewCallback callback) {