Moves BcSmartspaceDataPlugin to SystemUI.

Test: mp droid, mp sysuig, gradle build for Launcher
Bug: 182344603
Change-Id: I82df1a4e46094396b1b7cfb9f1f1d7fab351b818

packages/SystemUI/Android.bp

@@ -54,7 +54,7 @@ java_library {
     name: "SystemUI-sensors",
     srcs: [
         "src/com/android/systemui/util/sensors/ThresholdSensor.java",
-    ]
+    ],
 }
 
 android_library {
@@ -99,7 +99,7 @@ android_library {
         "SystemUI-tags",
         "SystemUI-proto",
         "dagger2",
-        "jsr330"
+        "jsr330",
     ],
     manifest: "AndroidManifest.xml",
 

packages/SystemUI/plugin/Android.bp

@@ -25,7 +25,10 @@ java_library {
 
     name: "SystemUIPluginLib",
 
-    srcs: ["src/**/*.java"],
+    srcs: [
+        "src/**/*.java",
+        "bcsmartspace/src/**/*.java",
+    ],
 
     static_libs: [
         "PluginCoreLib",

packages/SystemUI/plugin/bcsmartspace/src/com/android/systemui/plugins/BcSmartspaceDataPlugin.java

@@ -0,0 +1,44 @@
+/*
+ * 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.systemui.plugins;
+
+import android.os.Parcelable;
+
+import com.android.systemui.plugins.annotations.ProvidesInterface;
+
+import java.util.List;
+
+/**
+ * Interface to provide SmartspaceTargets to BcSmartspace.
+ */
+@ProvidesInterface(action = BcSmartspaceDataPlugin.ACTION, version = BcSmartspaceDataPlugin.VERSION)
+public interface BcSmartspaceDataPlugin extends Plugin {
+    String ACTION = "com.android.systemui.action.PLUGIN_BC_SMARTSPACE_DATA";
+    int VERSION = 1;
+
+    /** Register a listener to get Smartspace data. */
+    void registerListener(SmartspaceTargetListener listener);
+
+    /** Unregister a listener. */
+    void unregisterListener(SmartspaceTargetListener listener);
+
+    /** Provides Smartspace data to registered listeners. */
+    interface SmartspaceTargetListener {
+        /** Each Parcelable is a SmartspaceTarget that represents a card. */
+        void onSmartspaceTargetsUpdated(List<? extends Parcelable> targets);
+    }
+}