Add plugin support

- Add libs/plugin_core.jar
- Include plugin_core in Launcher3 build (it is already present other
  builds as part of the updated shared lib)
- Add PluginEnablerImpl that uses SharedPrefs to enable/disable plugin
  components
- Add src_plugins, where plugin interfaces will live. It has a build
  rule to create a jar that plugin projects will depend on.
- Copy PluginPreferencesFragment from sysui but using our implementation
  for PluginEnabler

Bug: 115877296
Change-Id: I3db54677eaceb10f92018c0f9d18920ad9ffac39

1 files changed, 46 insertions, 0 deletions

diff --git a/res/layout/switch_preference_with_settings.xml b/res/layout/switch_preference_with_settings.xml
new file mode 100644
index 000000000..d3195610d
--- /dev/null
+++ b/res/layout/switch_preference_with_settings.xml
@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- 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.
+-->
+
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:orientation="horizontal"
+    android:gravity="center_vertical">
+
+    <ImageView
+        android:id="@+id/settings"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:src="@drawable/ic_setting"
+        android:tint="@android:color/black"
+        android:padding="12dp"
+        android:background="?android:attr/selectableItemBackgroundBorderless" />
+
+    <View
+        android:id="@+id/divider"
+        android:layout_width="1dp"
+        android:layout_height="30dp"
+        android:layout_marginEnd="8dp"
+        android:background="?android:attr/listDivider" />
+
+    <!-- Note: seems we need focusable="false" and clickable="false" when moving to androidx -->
+    <Switch
+        android:id="@android:id/switch_widget"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:background="@null" />
+</LinearLayout>
\ No newline at end of file