<!DOCTYPE html>
<!--
Copyright (c) 2015 The Chromium Authors. All rights reserved.
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->

<link rel="import" href="/model/timed_event.html">

<script>
'use strict';

/**
 * @fileoverview Provides the ContainerMemoryDump class.
 */
tr.exportTo('tr.model', function() {
  /**
   * The ContainerMemoryDump represents an abstract container memory dump.
   * @constructor
   */
  function ContainerMemoryDump(start) {
    tr.model.TimedEvent.call(this, start);

    this.memoryAllocatorDumps_ = undefined;
    this.memoryAllocatorDumpsByFullName_ = undefined;
  };

  ContainerMemoryDump.prototype = {
    __proto__: tr.model.TimedEvent.prototype,

    shiftTimestampsForward: function(amount) {
      this.start += amount;
    },

    get memoryAllocatorDumps() {
      return this.memoryAllocatorDumps_;
    },

    set memoryAllocatorDumps(memoryAllocatorDumps) {
      this.memoryAllocatorDumps_ = memoryAllocatorDumps;

      // Clear the index and generate it lazily.
      this.memoryAllocatorDumpsByFullName_ = undefined;
    },

    getMemoryAllocatorDumpByFullName: function(fullName) {
      if (this.memoryAllocatorDumps_ === undefined)
        return undefined;

      // Lazily generate the index if necessary.
      if (this.memoryAllocatorDumpsByFullName_ === undefined) {
        var index = {};
        function addDumpsToIndex(dumps) {
          dumps.forEach(function(dump) {
            index[dump.fullName] = dump;
            addDumpsToIndex(dump.children);
          });
        };
        addDumpsToIndex(this.memoryAllocatorDumps_);
        this.memoryAllocatorDumpsByFullName_ = index;
      }

      return this.memoryAllocatorDumpsByFullName_[fullName];
    }
  };

  return {
    ContainerMemoryDump: ContainerMemoryDump
  };
});
</script>