Relaunch "Create CarHTMLViewer for car builds"

ag/14276507 got reverted because of a build error. The build error
was fixed by allowing CarHTMLViewer to be in /system partition.

Bug: 185951366
Test: lunch gsi_car_arm64 && make CarHTMLViewer
Test: manual test
Change-Id: I2c4729ab6352a6b06bdb9969c17ff3ee64ea3331
diff --git a/Android.bp b/Android.bp
index 679d50a..c85f4fb 100644
--- a/Android.bp
+++ b/Android.bp
@@ -17,6 +17,18 @@
 
 android_app {
     name: "HTMLViewer",
+    manifest: "AndroidManifest.xml",
     srcs: ["**/*.java"],
+    exclude_srcs: ["src/com/android/htmlviewer/CarHTMLViewerActivity.java"],
+    sdk_version: "current",
+}
+
+android_app {
+    name: "CarHTMLViewer",
+    manifest: "AndroidManifest-car.xml",
+    overrides: ["HTMLViewer"],
+    srcs: ["**/*.java"],
+    libs: ["android.car-stubs"],
+    static_libs: ["car-ui-lib"],
     sdk_version: "current",
 }
diff --git a/AndroidManifest-car.xml b/AndroidManifest-car.xml
new file mode 100644
index 0000000..2c737ea
--- /dev/null
+++ b/AndroidManifest-car.xml
@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 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.
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+     package="com.android.htmlviewer">
+    <original-package android:name="com.android.htmlviewer"/>
+
+    <application android:label="@string/app_label"
+         android:supportsRtl="true">
+        <activity android:name="CarHTMLViewerActivity"
+             android:label="@string/app_label"
+             android:theme="@style/Theme.CarUi.WithToolbar"
+             android:exported="true">
+            <intent-filter>
+                <category android:name="android.intent.category.DEFAULT"/>
+                <action android:name="android.intent.action.VIEW"/>
+                <data android:scheme="content"/>
+                <data android:mimeType="text/html"/>
+                <data android:mimeType="text/plain"/>
+                <data android:mimeType="application/xhtml+xml"/>
+                <data android:mimeType="application/vnd.wap.xhtml+xml"/>
+            </intent-filter>
+        </activity>
+        <meta-data android:name="android.nfc.disable_beam_default"
+             android:value="true"/>
+        <meta-data android:name="android.max_aspect"
+             android:value="2.1"/>
+    </application>
+</manifest>
diff --git a/res/layout/main_car.xml b/res/layout/main_car.xml
new file mode 100644
index 0000000..1577ec4
--- /dev/null
+++ b/res/layout/main_car.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 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.
+-->
+
+<com.android.car.ui.FocusArea
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <include layout="@layout/main"/>
+
+</com.android.car.ui.FocusArea>
diff --git a/src/com/android/htmlviewer/CarHTMLViewerActivity.java b/src/com/android/htmlviewer/CarHTMLViewerActivity.java
new file mode 100644
index 0000000..de31bff
--- /dev/null
+++ b/src/com/android/htmlviewer/CarHTMLViewerActivity.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2021 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.htmlviewer;
+
+import android.webkit.WebView;
+
+import com.android.car.ui.core.CarUi;
+import com.android.car.ui.toolbar.Toolbar;
+import com.android.car.ui.toolbar.ToolbarController;
+
+/**
+ * An HTMLViewerActivity used for car builds.
+ */
+public class CarHTMLViewerActivity extends HTMLViewerActivity {
+    private ToolbarController mToolbar;
+
+    @Override
+    protected void setContentView() {
+        setContentView(R.layout.main_car);
+        WebView webView = requireViewById(R.id.webview);
+        webView.setDefaultFocusHighlightEnabled(false);
+        mToolbar = CarUi.requireToolbar(this);
+        mToolbar.setState(Toolbar.State.SUBPAGE);
+    }
+
+    @Override
+    public void setTitle(CharSequence title) {
+        super.setTitle(title);
+        mToolbar.setTitle(title);
+    }
+}
diff --git a/src/com/android/htmlviewer/HTMLViewerActivity.java b/src/com/android/htmlviewer/HTMLViewerActivity.java
index 1aa1f68..233a87d 100644
--- a/src/com/android/htmlviewer/HTMLViewerActivity.java
+++ b/src/com/android/htmlviewer/HTMLViewerActivity.java
@@ -55,7 +55,7 @@
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        setContentView(R.layout.main);
+        setContentView();
 
         mWebView = findViewById(R.id.webview);
         mLoading = findViewById(R.id.loading);
@@ -83,6 +83,10 @@
         loadUrl();
     }
 
+    protected void setContentView() {
+        setContentView(R.layout.main);
+    }
+
     private void loadUrl() {
         if (mIntent.hasExtra(Intent.EXTRA_TITLE)) {
             setTitle(mIntent.getStringExtra(Intent.EXTRA_TITLE));