ash/periodic_metrics_recorder.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ash/periodic_metrics_recorder.h"
   6
   7 #include "ash/shelf/shelf_layout_manager.h"
   8 #include "ash/shelf/shelf_view.h"
   9 #include "ash/shelf/shelf_widget.h"
  10 #include "ash/shell.h"
  11 #include "base/metrics/histogram.h"
  12
  13 namespace ash {
  14
  15 // Time in seconds between calls to "RecordMetrics".
  16 const int kAshPeriodicMetricsTimeInSeconds = 30 * 60;
  17
  18 PeriodicMetricsRecorder::PeriodicMetricsRecorder() {
  19   timer_.Start(FROM_HERE,
  20                base::TimeDelta::FromSeconds(kAshPeriodicMetricsTimeInSeconds),
  21                this,
  22                &PeriodicMetricsRecorder::RecordMetrics);
  23 }
  24
  25 PeriodicMetricsRecorder::~PeriodicMetricsRecorder() {
  26   timer_.Stop();
  27 }
  28
  29 void PeriodicMetricsRecorder::RecordMetrics() {
  30   internal::ShelfLayoutManager* manager =
  31       internal::ShelfLayoutManager::ForLauncher(Shell::GetPrimaryRootWindow());
  32   if (manager) {
  33     UMA_HISTOGRAM_ENUMERATION("Ash.ShelfAlignmentOverTime",
  34         manager->SelectValueForShelfAlignment(
  35             internal::SHELF_ALIGNMENT_UMA_ENUM_VALUE_BOTTOM,
  36             internal::SHELF_ALIGNMENT_UMA_ENUM_VALUE_LEFT,
  37             internal::SHELF_ALIGNMENT_UMA_ENUM_VALUE_RIGHT,
  38             -1),
  39         internal::SHELF_ALIGNMENT_UMA_ENUM_VALUE_COUNT);
  40   }
  41 }
  42
  43 }  // namespace ash