It is time.

ui/views/examples/progress_bar_example.cc

-// Copyright (c) 2012 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.
-
-#include "ui/views/examples/progress_bar_example.h"
-
-#include <algorithm>
-
-#include "base/strings/utf_string_conversions.h"
-#include "ui/views/controls/button/label_button.h"
-#include "ui/views/controls/progress_bar.h"
-#include "ui/views/layout/grid_layout.h"
-#include "ui/views/view.h"
-
-namespace {
-
-const double kStepSize = 0.1;
-
-double SetToMax(double percent) {
-  return std::min(std::max(percent, 0.0), 1.0);
-}
-
-}  // namespace
-
-namespace views {
-namespace examples {
-
-ProgressBarExample::ProgressBarExample()
-    : ExampleBase("Progress Bar"),
-      minus_button_(NULL),
-      plus_button_(NULL),
-      progress_bar_(NULL),
-      current_percent_(0.0) {
-}
-
-ProgressBarExample::~ProgressBarExample() {
-}
-
-void ProgressBarExample::CreateExampleView(View* container) {
-  GridLayout* layout = new GridLayout(container);
-  container->SetLayoutManager(layout);
-
-  ColumnSet* column_set = layout->AddColumnSet(0);
-  column_set->AddColumn(GridLayout::LEADING, GridLayout::FILL,
-                        0, GridLayout::USE_PREF, 0, 0);
-  column_set->AddPaddingColumn(0, 8);
-  column_set->AddColumn(GridLayout::FILL, GridLayout::FILL,
-                        1, GridLayout::USE_PREF, 0, 0);
-  column_set->AddPaddingColumn(0, 8);
-  column_set->AddColumn(GridLayout::TRAILING, GridLayout::FILL,
-                        0, GridLayout::USE_PREF, 0, 0);
-
-  layout->StartRow(0, 0);
-  minus_button_ = new LabelButton(this, base::ASCIIToUTF16("-"));
-  layout->AddView(minus_button_);
-  progress_bar_ = new ProgressBar();
-  layout->AddView(progress_bar_);
-  plus_button_ = new LabelButton(this, base::ASCIIToUTF16("+"));
-  layout->AddView(plus_button_);
-}
-
-void ProgressBarExample::ButtonPressed(Button* sender, const ui::Event& event) {
-  if (sender == minus_button_)
-    current_percent_ = SetToMax(current_percent_ - kStepSize);
-  else if (sender == plus_button_)
-    current_percent_ = SetToMax(current_percent_ + kStepSize);
-
-  progress_bar_->SetValue(current_percent_);
-}
-
-}  // namespace examples
-}  // namespace views