Use SurfaceView to render grid preview

Demo: https://drive.google.com/open?id=1wQ8dT5bfTxSh-NRQpNBwTCkKOtOOUMPj

Bug: 150224413
Test: Manual
Change-Id: I006055da5e372029ecf99c4c3aac6d866688ef41

1 files changed, 18 insertions, 6 deletions

diff --git a/src/com/android/customization/model/grid/GridOptionsManager.java b/src/com/android/customization/model/grid/GridOptionsManager.java
index 1599ddeb..a334f5e6 100644
--- a/src/com/android/customization/model/grid/GridOptionsManager.java
+++ b/src/com/android/customization/model/grid/GridOptionsManager.java
@@ -16,6 +16,8 @@
 package com.android.customization.model.grid;
 
 import android.os.AsyncTask;
+import android.os.Bundle;
+import android.util.Pair;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
@@ -23,7 +25,6 @@ import androidx.annotation.Nullable;
 import com.android.customization.model.CustomizationManager;
 import com.android.customization.module.ThemesUserEventLogger;
 
-import java.util.Collections;
 import java.util.List;
 
 /**
@@ -60,7 +61,17 @@ public class GridOptionsManager implements CustomizationManager<GridOption> {
         new FetchTask(mProvider, callback).execute();
     }
 
-    private static class FetchTask extends AsyncTask<Void, Void, List<GridOption>> {
+    /** See if using surface view to render grid options */
+    public boolean usesSurfaceView() {
+        return mProvider.usesSurfaceView();
+    }
+
+    /** Call through content provider API to render preview */
+    public void renderPreview(Bundle bundle, String gridName) {
+        mProvider.renderPreview(gridName, bundle);
+    }
+
+    private static class FetchTask extends AsyncTask<Void, Void, Pair<List<GridOption>, String>> {
         private final LauncherGridOptionsProvider mProvider;
         @Nullable private final OptionsFetchedListener<GridOption> mCallback;
 
@@ -71,15 +82,16 @@ public class GridOptionsManager implements CustomizationManager<GridOption> {
         }
 
         @Override
-        protected List<GridOption> doInBackground(Void[] params) {
+        protected Pair<List<GridOption>, String> doInBackground(Void[] params) {
             return mProvider.fetch(false);
         }
 
         @Override
-        protected void onPostExecute(List<GridOption> gridOptions) {
+        protected void onPostExecute(Pair<List<GridOption>, String> gridOptionsResult) {
             if (mCallback != null) {
-                if (gridOptions != null && !gridOptions.isEmpty()) {
-                    mCallback.onOptionsLoaded(gridOptions);
+                if (gridOptionsResult != null && gridOptionsResult.first != null
+                        && !gridOptionsResult.first.isEmpty()) {
+                    mCallback.onOptionsLoaded(gridOptionsResult.first);
                 } else {
                     mCallback.onError(null);
                 }