Move all contextual card related classes.

... from homepage to contextualcards.

Test: rebuild
Change-Id: Id7889566ce1e7257eb699d963ae996906fdb58ff

src/com/android/settings/homepage/contextualcards/ContextualCardsFragment.java

@@ -0,0 +1,69 @@
+/*
+ * 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.settings.homepage.contextualcards;
+
+import static com.android.settings.homepage.contextualcards.ContextualCardsAdapter.SPAN_COUNT;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.recyclerview.widget.GridLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
+import com.android.settings.R;
+import com.android.settings.core.InstrumentedFragment;
+
+public class ContextualCardsFragment extends InstrumentedFragment {
+
+    private static final String TAG = "ContextualCardsFragment";
+
+    private RecyclerView mCardsContainer;
+    private GridLayoutManager mLayoutManager;
+    private ContextualCardsAdapter mContextualCardsAdapter;
+    private ContextualCardManager mContextualCardManager;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        mContextualCardManager = new ContextualCardManager(getContext(), getSettingsLifecycle());
+        mContextualCardManager.loadContextualCards(this);
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+            Bundle savedInstanceState) {
+        final View rootView = inflater.inflate(R.layout.settings_homepage, container, false);
+        mCardsContainer = rootView.findViewById(R.id.card_container);
+        mLayoutManager = new GridLayoutManager(getActivity(), SPAN_COUNT,
+                GridLayoutManager.VERTICAL, false /* reverseLayout */);
+        mCardsContainer.setLayoutManager(mLayoutManager);
+        mContextualCardsAdapter = new ContextualCardsAdapter(getContext(),
+                this /* lifecycleOwner */, mContextualCardManager);
+        mCardsContainer.setAdapter(mContextualCardsAdapter);
+        mContextualCardManager.setListener(mContextualCardsAdapter);
+
+        return rootView;
+    }
+
+    @Override
+    public int getMetricsCategory() {
+        return MetricsEvent.SETTINGS_HOMEPAGE;
+    }
+}