Implement the renderers for conditional header and footer

Bug: 119593268
Bug: 113451905
Test: visual
Change-Id: I43d6ca8508f0ba49796004d679d6cbe37ddf4455

src/com/android/settings/homepage/contextualcards/conditional/ConditionHeaderContextualCard.java

@@ -0,0 +1,66 @@
+/*
+ * 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.conditional;
+
+import com.android.settings.homepage.contextualcards.ContextualCard;
+
+import java.util.List;
+
+/**
+ * Data class representing a condition header {@link ContextualCard}.
+ *
+ * Use this class to store additional attributes on top of {@link ContextualCard} for
+ * {@link ConditionHeaderContextualCardRenderer} and {@link ConditionContextualCardController}.
+ */
+public class ConditionHeaderContextualCard extends ContextualCard {
+
+    private final List<ContextualCard> mConditionalCards;
+
+    private ConditionHeaderContextualCard(Builder builder) {
+        super(builder);
+        mConditionalCards = builder.mConditionalCards;
+    }
+
+    @Override
+    public int getCardType() {
+        return CardType.CONDITIONAL_HEADER;
+    }
+
+    public List<ContextualCard> getConditionalCards() {
+        return mConditionalCards;
+    }
+
+    public static class Builder extends ContextualCard.Builder {
+
+        private List<ContextualCard> mConditionalCards;
+
+        public Builder setConditionalCards(List<ContextualCard> conditionalCards) {
+            mConditionalCards = conditionalCards;
+            return this;
+        }
+
+        @Override
+        public Builder setCardType(int cardType) {
+            throw new IllegalArgumentException(
+                    "Cannot change card type for " + getClass().getName());
+        }
+
+        public ConditionHeaderContextualCard build() {
+            return new ConditionHeaderContextualCard(this);
+        }
+    }
+}