Move all contextual card related classes.

... from homepage to contextualcards.

Test: rebuild
Change-Id: Id7889566ce1e7257eb699d963ae996906fdb58ff

src/com/android/settings/homepage/contextualcards/slices/SliceContextualCardRenderer.java

@@ -0,0 +1,121 @@
+/*
+ * 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.slices;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.net.Uri;
+import android.util.ArrayMap;
+import android.util.Log;
+import android.view.View;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.VisibleForTesting;
+import androidx.lifecycle.LifecycleOwner;
+import androidx.lifecycle.LiveData;
+import androidx.recyclerview.widget.RecyclerView;
+import androidx.slice.Slice;
+import androidx.slice.SliceItem;
+import androidx.slice.widget.EventInfo;
+import androidx.slice.widget.SliceLiveData;
+import androidx.slice.widget.SliceView;
+
+import com.android.settings.R;
+import com.android.settings.homepage.contextualcards.ContextualCard;
+import com.android.settings.homepage.contextualcards.ContextualCardRenderer;
+
+import java.util.Map;
+
+/**
+ * Card renderer for {@link ContextualCard} built as slices.
+ */
+public class SliceContextualCardRenderer implements ContextualCardRenderer,
+        SliceView.OnSliceActionListener {
+
+    private static final String TAG = "SliceCardRenderer";
+
+    @VisibleForTesting
+    final Map<String, LiveData<Slice>> mSliceLiveDataMap;
+
+    private final Context mContext;
+    private final LifecycleOwner mLifecycleOwner;
+
+    public SliceContextualCardRenderer(Context context, LifecycleOwner lifecycleOwner) {
+        mContext = context;
+        mLifecycleOwner = lifecycleOwner;
+        mSliceLiveDataMap = new ArrayMap<>();
+    }
+
+    @Override
+    public int getViewType() {
+        return R.layout.homepage_slice_tile;
+    }
+
+    @Override
+    public RecyclerView.ViewHolder createViewHolder(View view) {
+        return new SliceViewHolder(view);
+    }
+
+    @Override
+    public void bindView(RecyclerView.ViewHolder holder, ContextualCard card) {
+        final SliceViewHolder cardHolder = (SliceViewHolder) holder;
+        final Uri uri = card.getSliceUri();
+
+        //TODO(b/116063073): The URI check should be done earlier when we are performing final
+        // filtering after having the full list.
+        if (!ContentResolver.SCHEME_CONTENT.equals(uri.getScheme())) {
+            Log.w(TAG, "Invalid uri, skipping slice: " + uri);
+            return;
+        }
+
+        cardHolder.sliceView.setScrollable(false);
+        cardHolder.sliceView.setTag(uri);
+        //TODO(b/114009676): We will soon have a field to decide what slice mode we should set.
+        cardHolder.sliceView.setMode(SliceView.MODE_LARGE);
+        LiveData<Slice> sliceLiveData = mSliceLiveDataMap.get(uri.toString());
+
+        if (sliceLiveData == null) {
+            sliceLiveData = SliceLiveData.fromUri(mContext, uri);
+            mSliceLiveDataMap.put(uri.toString(), sliceLiveData);
+        }
+
+        sliceLiveData.removeObservers(mLifecycleOwner);
+        sliceLiveData.observe(mLifecycleOwner, slice -> {
+            if (slice == null) {
+                Log.w(TAG, "Slice is null");
+            }
+            cardHolder.sliceView.setSlice(slice);
+        });
+
+        // Set this listener so we can log the interaction users make on the slice
+        cardHolder.sliceView.setOnSliceActionListener(this);
+    }
+
+    @Override
+    public void onSliceAction(@NonNull EventInfo eventInfo, @NonNull SliceItem sliceItem) {
+        //TODO(b/79698338): Log user interaction
+    }
+
+    public static class SliceViewHolder extends RecyclerView.ViewHolder {
+        public final SliceView sliceView;
+
+        public SliceViewHolder(View view) {
+            super(view);
+            sliceView = view.findViewById(R.id.slice_view);
+        }
+    }
+}