Preloading the LauncherModel in case launcher dies

Change-Id: Ibe529f31e96c645d45d51b9f3bf6c21b76b41254
2026-02-19 18:58:19 +00:00 · 2018-01-31 11:59:00 -08:00
parent 260fec1b24
commit e75d9f1ec3
4 changed files with 73 additions and 6 deletions
--- a/src/com/android/launcher3/model/ModelPreload.java
+++ b/src/com/android/launcher3/model/ModelPreload.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2018 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.model;
+
+import android.content.Context;
+import android.support.annotation.WorkerThread;
+import android.util.Log;
+
+import com.android.launcher3.AllAppsList;
+import com.android.launcher3.LauncherAppState;
+import com.android.launcher3.LauncherModel;
+import com.android.launcher3.LauncherModel.ModelUpdateTask;
+
+import java.util.concurrent.Executor;
+
+/**
+ * Utility class to preload LauncherModel
+ */
+public class ModelPreload implements ModelUpdateTask {
+
+    private static final String TAG = "ModelPreload";
+
+    private LauncherAppState mApp;
+    private LauncherModel mModel;
+    private BgDataModel mBgDataModel;
+    private AllAppsList mAllAppsList;
+
+    @Override
+    public final void init(LauncherAppState app, LauncherModel model, BgDataModel dataModel,
+            AllAppsList allAppsList, Executor uiExecutor) {
+        mApp = app;
+        mModel = model;
+        mBgDataModel = dataModel;
+        mAllAppsList = allAppsList;
+    }
+
+    @Override
+    public final void run() {
+        if (!mModel.isModelLoaded()) {
+            Log.d(TAG, "Workspace not loaded, loading now");
+            mModel.startLoaderForResults(
+                    new LoaderResults(mApp, mBgDataModel, mAllAppsList, 0, null));
+        }
+        Log.d(TAG, "Preload completed : " + mModel.isModelLoaded());
+        onComplete(mModel.isModelLoaded());
+    }
+
+    /**
+     * Called when the task is complete
+     */
+    @WorkerThread
+    public void onComplete(boolean isSuccess) { }
+
+    public void start(Context context) {
+        LauncherAppState.getInstance(context).getModel().enqueueModelUpdateTask(this);
+    }
+}