content: /*
   * Copyright (C) 2015 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 androidx.leanback.leanbackshowcase.app.details;
  
  import androidx.leanback.leanbackshowcase.models.CardRow;
  import androidx.leanback.leanbackshowcase.utils.CardListRow;
  import androidx.leanback.widget.ListRowPresenter;
  import androidx.leanback.widget.Presenter;
  import androidx.leanback.widget.PresenterSelector;
  
  /**
   * This {@link PresenterSelector} will return a {@link ListRowPresenter} which has shadow support
   * enabled or not depending on {@link CardRow#useShadow()} for a given row.
   */
  public class ShadowRowPresenterSelector extends PresenterSelector {
  
      private ListRowPresenter mShadowEnabledRowPresenter = new ListRowPresenter();
      private ListRowPresenter mShadowDisabledRowPresenter = new ListRowPresenter();
  
      public ShadowRowPresenterSelector() {
          mShadowEnabledRowPresenter.setNumRows(1);
          mShadowDisabledRowPresenter.setShadowEnabled(false);
      }
  
      @Override public Presenter getPresenter(Object item) {
          if (!(item instanceof CardListRow)) return mShadowDisabledRowPresenter;
          CardListRow listRow = (CardListRow) item;
          CardRow row = listRow.getCardRow();
          if (row.useShadow()) return mShadowEnabledRowPresenter;
          return mShadowDisabledRowPresenter;
      }
  
      @Override
      public Presenter[] getPresenters() {
          return new Presenter [] {
                  mShadowDisabledRowPresenter,
                  mShadowEnabledRowPresenter
          };
      }
  }
  