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// 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 "chrome/browser/ui/views/sad_tab_view.h"
#include <string>
#include "base/metrics/field_trial.h"
#include "base/metrics/histogram.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/feedback/feedback_util.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_finder.h"
#include "chrome/browser/ui/chrome_pages.h"
#include "chrome/common/url_constants.h"
#include "content/public/browser/navigation_controller.h"
#include "content/public/browser/web_contents.h"
#include "grit/generated_resources.h"
#include "grit/theme_resources.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/gfx/font.h"
#include "ui/views/controls/button/text_button.h"
#include "ui/views/controls/image_view.h"
#include "ui/views/controls/label.h"
#include "ui/views/controls/link.h"
#include "ui/views/layout/grid_layout.h"
using content::OpenURLParams;
using content::WebContents;
namespace {
const int kPadding = 20;
const float kMessageSize = 0.65f;
const SkColor kTextColor = SK_ColorWHITE;
const SkColor kCrashColor = SkColorSetRGB(35, 48, 64);
const SkColor kKillColor = SkColorSetRGB(57, 48, 88);
const char kCategoryTagCrash[] = "Crash";
// Font size correction.
const int kTitleFontSizeDelta = 2;
const int kMessageFontSizeDelta = 1;
// Name of the experiment to run.
const char kExperiment[] = "LowMemoryMargin";
#define EXPERIMENT_CUSTOM_COUNTS(name, sample, min, max, buckets) \
{ \
UMA_HISTOGRAM_CUSTOM_COUNTS(name, sample, min, max, buckets); \
if (base::FieldTrialList::TrialExists(kExperiment)) \
UMA_HISTOGRAM_CUSTOM_COUNTS( \
base::FieldTrial::MakeName(name, kExperiment), \
sample, min, max, buckets); \
}
} // namespace
SadTabView::SadTabView(WebContents* web_contents, chrome::SadTabKind kind)
: web_contents_(web_contents),
kind_(kind),
painted_(false),
base_font_(ui::ResourceBundle::GetSharedInstance().GetFont(
ui::ResourceBundle::BaseFont)),
message_(NULL),
help_link_(NULL),
feedback_link_(NULL),
reload_button_(NULL) {
DCHECK(web_contents);
// Sometimes the user will never see this tab, so keep track of the total
// number of creation events to compare to display events.
// TODO(jamescook): Remove this after R20 stable. Keep it for now so we can
// compare R20 to earlier versions.
UMA_HISTOGRAM_COUNTS("SadTab.Created", kind_);
// These stats should use the same counting approach and bucket size used for
// tab discard events in chrome/browser/oom_priority_manager.cc so they can be
// directly compared.
// TODO(jamescook): Maybe track time between sad tabs?
switch (kind_) {
case chrome::SAD_TAB_KIND_CRASHED: {
static int crashed = 0;
crashed++;
EXPERIMENT_CUSTOM_COUNTS(
"Tabs.SadTab.CrashCreated", crashed, 1, 1000, 50);
break;
}
case chrome::SAD_TAB_KIND_KILLED: {
static int killed = 0;
killed++;
EXPERIMENT_CUSTOM_COUNTS(
"Tabs.SadTab.KillCreated", killed, 1, 1000, 50);
break;
}
default:
NOTREACHED();
}
// Set the background color.
set_background(views::Background::CreateSolidBackground(
(kind_ == chrome::SAD_TAB_KIND_CRASHED) ? kCrashColor : kKillColor));
}
SadTabView::~SadTabView() {}
void SadTabView::LinkClicked(views::Link* source, int event_flags) {
DCHECK(web_contents_);
if (source == help_link_) {
GURL help_url((kind_ == chrome::SAD_TAB_KIND_CRASHED) ?
chrome::kCrashReasonURL : chrome::kKillReasonURL);
OpenURLParams params(
help_url, content::Referrer(), CURRENT_TAB,
content::PAGE_TRANSITION_LINK, false);
web_contents_->OpenURL(params);
} else if (source == feedback_link_) {
chrome::ShowFeedbackPage(
browser::FindBrowserWithWebContents(web_contents_),
l10n_util::GetStringUTF8(IDS_KILLED_TAB_FEEDBACK_MESSAGE),
std::string(kCategoryTagCrash));
}
}
void SadTabView::ButtonPressed(views::Button* source,
const ui::Event& event) {
DCHECK(web_contents_);
DCHECK(source == reload_button_);
web_contents_->GetController().Reload(true);
}
void SadTabView::Layout() {
// Specify the maximum message width explicitly.
message_->SizeToFit(static_cast<int>(width() * kMessageSize));
View::Layout();
}
void SadTabView::ViewHierarchyChanged(bool is_add,
views::View* parent,
views::View* child) {
if (child != this || !is_add)
return;
views::GridLayout* layout = views::GridLayout::CreatePanel(this);
SetLayoutManager(layout);
const int column_set_id = 0;
views::ColumnSet* columns = layout->AddColumnSet(column_set_id);
columns->AddPaddingColumn(1, kPadding);
columns->AddColumn(views::GridLayout::CENTER, views::GridLayout::CENTER,
0, views::GridLayout::USE_PREF, 0, 0);
columns->AddPaddingColumn(1, kPadding);
views::ImageView* image = new views::ImageView();
image->SetImage(ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
(kind_ == chrome::SAD_TAB_KIND_CRASHED) ? IDR_SAD_TAB : IDR_KILLED_TAB));
layout->StartRowWithPadding(0, column_set_id, 1, kPadding);
layout->AddView(image);
views::Label* title = CreateLabel(l10n_util::GetStringUTF16(
(kind_ == chrome::SAD_TAB_KIND_CRASHED) ?
IDS_SAD_TAB_TITLE : IDS_KILLED_TAB_TITLE));
title->SetFont(base_font_.DeriveFont(kTitleFontSizeDelta, gfx::Font::BOLD));
layout->StartRowWithPadding(0, column_set_id, 0, kPadding);
layout->AddView(title);
message_ = CreateLabel(l10n_util::GetStringUTF16(
(kind_ == chrome::SAD_TAB_KIND_CRASHED) ?
IDS_SAD_TAB_MESSAGE : IDS_KILLED_TAB_MESSAGE));
message_->SetMultiLine(true);
layout->StartRowWithPadding(0, column_set_id, 0, kPadding);
layout->AddView(message_);
if (web_contents_) {
layout->StartRowWithPadding(0, column_set_id, 0, kPadding);
reload_button_ = new views::TextButton(
this,
l10n_util::GetStringUTF16(IDS_SAD_TAB_RELOAD_LABEL));
reload_button_->set_border(new views::TextButtonNativeThemeBorder(
reload_button_));
layout->AddView(reload_button_);
help_link_ = CreateLink(l10n_util::GetStringUTF16(
(kind_ == chrome::SAD_TAB_KIND_CRASHED) ?
IDS_SAD_TAB_HELP_LINK : IDS_LEARN_MORE));
if (kind_ == chrome::SAD_TAB_KIND_CRASHED) {
size_t offset = 0;
string16 help_text(l10n_util::GetStringFUTF16(IDS_SAD_TAB_HELP_MESSAGE,
string16(), &offset));
views::Label* help_prefix = CreateLabel(help_text.substr(0, offset));
views::Label* help_suffix = CreateLabel(help_text.substr(offset));
const int help_column_set_id = 1;
views::ColumnSet* help_columns = layout->AddColumnSet(help_column_set_id);
help_columns->AddPaddingColumn(1, kPadding);
// Center three middle columns for the help's [prefix][link][suffix].
for (size_t column = 0; column < 3; column++)
help_columns->AddColumn(views::GridLayout::CENTER,
views::GridLayout::CENTER, 0, views::GridLayout::USE_PREF, 0, 0);
help_columns->AddPaddingColumn(1, kPadding);
layout->StartRowWithPadding(0, help_column_set_id, 0, kPadding);
layout->AddView(help_prefix);
layout->AddView(help_link_);
layout->AddView(help_suffix);
} else {
layout->StartRowWithPadding(0, column_set_id, 0, kPadding);
layout->AddView(help_link_);
feedback_link_ = CreateLink(
l10n_util::GetStringUTF16(IDS_KILLED_TAB_FEEDBACK_LINK));
layout->StartRowWithPadding(0, column_set_id, 0, kPadding);
layout->AddView(feedback_link_);
}
}
layout->AddPaddingRow(1, kPadding);
}
void SadTabView::OnPaint(gfx::Canvas* canvas) {
if (!painted_) {
// User actually saw the error, keep track for user experience stats.
// TODO(jamescook): Remove this after R20 stable. Keep it for now so we can
// compare R20 to earlier versions.
UMA_HISTOGRAM_COUNTS("SadTab.Displayed", kind_);
// These stats should use the same counting approach and bucket size used
// for tab discard events in chrome/browser/oom_priority_manager.cc so they
// can be directly compared.
switch (kind_) {
case chrome::SAD_TAB_KIND_CRASHED: {
static int crashed = 0;
UMA_HISTOGRAM_CUSTOM_COUNTS(
"Tabs.SadTab.CrashDisplayed", ++crashed, 1, 1000, 50);
break;
}
case chrome::SAD_TAB_KIND_KILLED: {
static int killed = 0;
UMA_HISTOGRAM_CUSTOM_COUNTS(
"Tabs.SadTab.KillDisplayed", ++killed, 1, 1000, 50);
break;
}
default:
NOTREACHED();
}
painted_ = true;
}
View::OnPaint(canvas);
}
views::Label* SadTabView::CreateLabel(const string16& text) {
views::Label* label = new views::Label(text);
label->SetFont(base_font_.DeriveFont(kMessageFontSizeDelta));
label->SetBackgroundColor(background()->get_color());
label->SetEnabledColor(kTextColor);
return label;
}
views::Link* SadTabView::CreateLink(const string16& text) {
views::Link* link = new views::Link(text);
link->SetFont(base_font_.DeriveFont(kMessageFontSizeDelta));
link->SetBackgroundColor(background()->get_color());
link->SetEnabledColor(kTextColor);
link->set_listener(this);
return link;
}
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