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      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 "chrome/browser/chromeos/first_run/step.h"
      6 
      7 #include <cctype>
      8 
      9 #include "ash/first_run/first_run_helper.h"
     10 #include "base/memory/scoped_ptr.h"
     11 #include "base/metrics/histogram.h"
     12 #include "chrome/browser/ui/webui/chromeos/first_run/first_run_actor.h"
     13 #include "ui/gfx/size.h"
     14 #include "ui/views/widget/widget.h"
     15 
     16 namespace {
     17 
     18 // Converts from "with-dashes-names" to "WithDashesNames".
     19 std::string ToCamelCase(const std::string& name) {
     20   std::string result;
     21   bool next_to_upper = true;
     22   for (size_t i = 0; i < name.length(); ++i) {
     23     if (name[i] == '-') {
     24       next_to_upper = true;
     25     } else if (next_to_upper) {
     26       result.push_back(std::toupper(name[i]));
     27       next_to_upper = false;
     28     } else {
     29       result.push_back(name[i]);
     30     }
     31   }
     32   return result;
     33 }
     34 
     35 }  // namespace
     36 
     37 namespace chromeos {
     38 namespace first_run {
     39 
     40 Step::Step(const std::string& name,
     41            ash::FirstRunHelper* shell_helper,
     42            FirstRunActor* actor)
     43     : name_(name),
     44       shell_helper_(shell_helper),
     45       actor_(actor) {
     46 }
     47 
     48 Step::~Step() { RecordCompletion(); }
     49 
     50 void Step::Show() {
     51   show_time_ = base::Time::Now();
     52   DoShow();
     53 }
     54 
     55 void Step::OnBeforeHide() {
     56   actor()->RemoveBackgroundHoles();
     57   DoOnBeforeHide();
     58 }
     59 
     60 void Step::OnAfterHide() {
     61   RecordCompletion();
     62   DoOnAfterHide();
     63 }
     64 
     65 gfx::Size Step::GetOverlaySize() const {
     66   return shell_helper()->GetOverlayWidget()->GetWindowBoundsInScreen().size();
     67 }
     68 
     69 void Step::RecordCompletion() {
     70   if (show_time_.is_null())
     71     return;
     72   std::string histogram_name =
     73       "CrosFirstRun.TimeSpentOnStep" + ToCamelCase(name());
     74   // Equivalent to using UMA_HISTOGRAM_CUSTOM_TIMES with 50 buckets on range
     75   // [100ms, 3 min.]. UMA_HISTOGRAM_CUSTOM_TIMES can not be used here, because
     76   // |histogram_name| is calculated dynamically and changes from call to call.
     77   base::HistogramBase* histogram = base::Histogram::FactoryTimeGet(
     78       histogram_name,
     79       base::TimeDelta::FromMilliseconds(100),
     80       base::TimeDelta::FromMinutes(3),
     81       50,
     82       base::HistogramBase::kUmaTargetedHistogramFlag);
     83   histogram->AddTime(base::Time::Now() - show_time_);
     84   show_time_ = base::Time();
     85 }
     86 
     87 }  // namespace first_run
     88 }  // namespace chromeos
     89 
     90