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 com.android.ahat;
  
  import com.android.tools.perflib.heap.Heap;
  import com.android.tools.perflib.heap.Instance;
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.Collections;
  import java.util.List;
  
  /**
   * Class for rendering a list of instances dominated by a single instance in a
   * pretty way.
   */
  class DominatedList {
    /**
     * Render a table to the given HtmlWriter showing a pretty list of
     * instances.
     *
     * @param snapshot  the snapshot where the instances reside
     * @param doc       the document to render the dominated list to
     * @param query     the current page query
     * @param id        a unique identifier to use for the dominated list in the current page
     * @param instances the collection of instances to generate a list for
     */
    public static void render(final AhatSnapshot snapshot,
        Doc doc, Query query, String id, Collection<Instance> instances) {
      List<Instance> insts = new ArrayList<Instance>(instances);
      Collections.sort(insts, Sort.defaultInstanceCompare(snapshot));
      HeapTable.render(doc, query, id, new TableConfig(snapshot), snapshot, insts);
    }
  
    private static class TableConfig implements HeapTable.TableConfig<Instance> {
      AhatSnapshot mSnapshot;
  
      public TableConfig(AhatSnapshot snapshot) {
        mSnapshot = snapshot;
      }
  
      @Override
      public String getHeapsDescription() {
        return "Bytes Retained by Heap";
      }
  
      @Override
      public long getSize(Instance element, Heap heap) {
        int index = mSnapshot.getHeapIndex(heap);
        return element.getRetainedSize(index);
      }
  
      @Override
      public List<HeapTable.ValueConfig<Instance>> getValueConfigs() {
        HeapTable.ValueConfig<Instance> value = new HeapTable.ValueConfig<Instance>() {
          public String getDescription() {
            return "Object";
          }
  
          public DocString render(Instance element) {
            return Value.render(mSnapshot, element);
          }
        };
        return Collections.singletonList(value);
      }
    }
  }
  