chrome/browser/ui/views/sad_tab_view.cc

   1 // Copyright (c) 2012 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/ui/views/sad_tab_view.h"
   6
   7 #include <string>
   8
   9 #include "base/metrics/field_trial.h"
  10 #include "base/metrics/histogram.h"
  11 #include "base/strings/utf_string_conversions.h"
  12 #include "chrome/browser/ui/browser.h"
  13 #include "chrome/browser/ui/browser_finder.h"
  14 #include "chrome/browser/ui/chrome_pages.h"
  15 #include "chrome/common/url_constants.h"
  16 #include "components/feedback/feedback_util.h"
  17 #include "content/public/browser/navigation_controller.h"
  18 #include "content/public/browser/web_contents.h"
  19 #include "grit/generated_resources.h"
  20 #include "grit/theme_resources.h"
  21 #include "ui/base/l10n/l10n_util.h"
  22 #include "ui/base/resource/resource_bundle.h"
  23 #include "ui/views/background.h"
  24 #include "ui/views/controls/button/label_button.h"
  25 #include "ui/views/controls/button/label_button_border.h"
  26 #include "ui/views/controls/image_view.h"
  27 #include "ui/views/controls/label.h"
  28 #include "ui/views/controls/link.h"
  29 #include "ui/views/layout/grid_layout.h"
  30 #include "ui/views/widget/widget.h"
  31
  32 using content::OpenURLParams;
  33 using content::WebContents;
  34
  35 namespace {
  36
  37 const int kPadding = 20;
  38 const float kMessageSize = 0.65f;
  39 const SkColor kTextColor = SK_ColorWHITE;
  40 const SkColor kCrashColor = SkColorSetRGB(35, 48, 64);
  41 const SkColor kKillColor = SkColorSetRGB(57, 48, 88);
  42
  43 const char kCategoryTagCrash[] = "Crash";
  44
  45 }  // namespace
  46
  47 SadTabView::SadTabView(WebContents* web_contents, chrome::SadTabKind kind)
  48     : web_contents_(web_contents),
  49       kind_(kind),
  50       painted_(false),
  51       message_(NULL),
  52       help_link_(NULL),
  53       feedback_link_(NULL),
  54       reload_button_(NULL) {
  55   DCHECK(web_contents);
  56
  57   // Sometimes the user will never see this tab, so keep track of the total
  58   // number of creation events to compare to display events.
  59   // TODO(jamescook): Remove this after R20 stable.  Keep it for now so we can
  60   // compare R20 to earlier versions.
  61   UMA_HISTOGRAM_COUNTS("SadTab.Created", kind_);
  62
  63   // These stats should use the same counting approach and bucket size used for
  64   // tab discard events in chromeos::OomPriorityManager so they can be
  65   // directly compared.
  66   // TODO(jamescook): Maybe track time between sad tabs?
  67   switch (kind_) {
  68     case chrome::SAD_TAB_KIND_CRASHED: {
  69       static int crashed = 0;
  70       crashed++;
  71       UMA_HISTOGRAM_CUSTOM_COUNTS(
  72           "Tabs.SadTab.CrashCreated", crashed, 1, 1000, 50);
  73       break;
  74     }
  75     case chrome::SAD_TAB_KIND_KILLED: {
  76       static int killed = 0;
  77       killed++;
  78       UMA_HISTOGRAM_CUSTOM_COUNTS(
  79           "Tabs.SadTab.KillCreated", killed, 1, 1000, 50);
  80       break;
  81     }
  82     default:
  83       NOTREACHED();
  84   }
  85
  86   // Set the background color.
  87   set_background(views::Background::CreateSolidBackground(
  88       (kind_ == chrome::SAD_TAB_KIND_CRASHED) ? kCrashColor : kKillColor));
  89
  90   views::GridLayout* layout = new views::GridLayout(this);
  91   SetLayoutManager(layout);
  92
  93   const int column_set_id = 0;
  94   views::ColumnSet* columns = layout->AddColumnSet(column_set_id);
  95   columns->AddPaddingColumn(1, kPadding);
  96   columns->AddColumn(views::GridLayout::CENTER, views::GridLayout::CENTER,
  97                      0, views::GridLayout::USE_PREF, 0, 0);
  98   columns->AddPaddingColumn(1, kPadding);
  99
 100   views::ImageView* image = new views::ImageView();
 101   image->SetImage(ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
 102       (kind_ == chrome::SAD_TAB_KIND_CRASHED) ? IDR_SAD_TAB : IDR_KILLED_TAB));
 103   layout->StartRowWithPadding(0, column_set_id, 1, kPadding);
 104   layout->AddView(image);
 105
 106   views::Label* title = CreateLabel(l10n_util::GetStringUTF16(
 107       (kind_ == chrome::SAD_TAB_KIND_CRASHED) ?
 108           IDS_SAD_TAB_TITLE : IDS_KILLED_TAB_TITLE));
 109   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 110   title->SetFontList(rb.GetFontList(ui::ResourceBundle::MediumFont));
 111   layout->StartRowWithPadding(0, column_set_id, 0, kPadding);
 112   layout->AddView(title);
 113
 114   message_ = CreateLabel(l10n_util::GetStringUTF16(
 115       (kind_ == chrome::SAD_TAB_KIND_CRASHED) ?
 116           IDS_SAD_TAB_MESSAGE : IDS_KILLED_TAB_MESSAGE));
 117   message_->SetMultiLine(true);
 118   layout->StartRowWithPadding(0, column_set_id, 0, kPadding);
 119   layout->AddView(message_);
 120
 121   if (web_contents_) {
 122     layout->StartRowWithPadding(0, column_set_id, 0, kPadding);
 123     reload_button_ = new views::LabelButton(
 124         this,
 125         l10n_util::GetStringUTF16(IDS_SAD_TAB_RELOAD_LABEL));
 126     reload_button_->SetStyle(views::Button::STYLE_BUTTON);
 127     // Always render the reload button with chrome style borders; never rely on
 128     // native styles.
 129     reload_button_->SetBorder(scoped_ptr<views::Border>(
 130         new views::LabelButtonBorder(reload_button_->style())));
 131     layout->AddView(reload_button_);
 132
 133     help_link_ = CreateLink(l10n_util::GetStringUTF16(
 134         (kind_ == chrome::SAD_TAB_KIND_CRASHED) ?
 135             IDS_SAD_TAB_HELP_LINK : IDS_LEARN_MORE));
 136
 137     if (kind_ == chrome::SAD_TAB_KIND_CRASHED) {
 138       size_t offset = 0;
 139       base::string16 help_text(
 140           l10n_util::GetStringFUTF16(IDS_SAD_TAB_HELP_MESSAGE,
 141                                      base::string16(), &offset));
 142       views::Label* help_prefix = CreateLabel(help_text.substr(0, offset));
 143       views::Label* help_suffix = CreateLabel(help_text.substr(offset));
 144
 145       const int help_column_set_id = 1;
 146       views::ColumnSet* help_columns = layout->AddColumnSet(help_column_set_id);
 147       help_columns->AddPaddingColumn(1, kPadding);
 148       // Center three middle columns for the help's [prefix][link][suffix].
 149       for (size_t column = 0; column < 3; column++)
 150         help_columns->AddColumn(views::GridLayout::CENTER,
 151             views::GridLayout::CENTER, 0, views::GridLayout::USE_PREF, 0, 0);
 152       help_columns->AddPaddingColumn(1, kPadding);
 153
 154       layout->StartRowWithPadding(0, help_column_set_id, 0, kPadding);
 155       layout->AddView(help_prefix);
 156       layout->AddView(help_link_);
 157       layout->AddView(help_suffix);
 158     } else {
 159       layout->StartRowWithPadding(0, column_set_id, 0, kPadding);
 160       layout->AddView(help_link_);
 161
 162       feedback_link_ = CreateLink(
 163           l10n_util::GetStringUTF16(IDS_KILLED_TAB_FEEDBACK_LINK));
 164       layout->StartRowWithPadding(0, column_set_id, 0, kPadding);
 165       layout->AddView(feedback_link_);
 166     }
 167   }
 168   layout->AddPaddingRow(1, kPadding);
 169 }
 170
 171 SadTabView::~SadTabView() {}
 172
 173 void SadTabView::LinkClicked(views::Link* source, int event_flags) {
 174   DCHECK(web_contents_);
 175   if (source == help_link_) {
 176     GURL help_url((kind_ == chrome::SAD_TAB_KIND_CRASHED) ?
 177         chrome::kCrashReasonURL : chrome::kKillReasonURL);
 178     OpenURLParams params(
 179         help_url, content::Referrer(), CURRENT_TAB,
 180         content::PAGE_TRANSITION_LINK, false);
 181     web_contents_->OpenURL(params);
 182   } else if (source == feedback_link_) {
 183     chrome::ShowFeedbackPage(
 184         chrome::FindBrowserWithWebContents(web_contents_),
 185         l10n_util::GetStringUTF8(IDS_KILLED_TAB_FEEDBACK_MESSAGE),
 186         std::string(kCategoryTagCrash));
 187   }
 188 }
 189
 190 void SadTabView::ButtonPressed(views::Button* sender,
 191                                const ui::Event& event) {
 192   DCHECK(web_contents_);
 193   DCHECK_EQ(reload_button_, sender);
 194   web_contents_->GetController().Reload(true);
 195 }
 196
 197 void SadTabView::Layout() {
 198   // Specify the maximum message width explicitly.
 199   message_->SizeToFit(static_cast<int>(width() * kMessageSize));
 200   View::Layout();
 201 }
 202
 203 void SadTabView::OnPaint(gfx::Canvas* canvas) {
 204   if (!painted_) {
 205     // User actually saw the error, keep track for user experience stats.
 206     // TODO(jamescook): Remove this after R20 stable.  Keep it for now so we can
 207     // compare R20 to earlier versions.
 208     UMA_HISTOGRAM_COUNTS("SadTab.Displayed", kind_);
 209
 210     // These stats should use the same counting approach and bucket size used
 211     // for tab discard events in chromeos::OomPriorityManager so they
 212     // can be directly compared.
 213     switch (kind_) {
 214       case chrome::SAD_TAB_KIND_CRASHED: {
 215         static int crashed = 0;
 216         UMA_HISTOGRAM_CUSTOM_COUNTS(
 217             "Tabs.SadTab.CrashDisplayed", ++crashed, 1, 1000, 50);
 218         break;
 219       }
 220       case chrome::SAD_TAB_KIND_KILLED: {
 221         static int killed = 0;
 222         UMA_HISTOGRAM_CUSTOM_COUNTS(
 223             "Tabs.SadTab.KillDisplayed", ++killed, 1, 1000, 50);
 224         break;
 225       }
 226       default:
 227         NOTREACHED();
 228     }
 229     painted_ = true;
 230   }
 231   View::OnPaint(canvas);
 232 }
 233
 234 void SadTabView::Show() {
 235   views::Widget::InitParams sad_tab_params(
 236       views::Widget::InitParams::TYPE_CONTROL);
 237
 238   // It is not possible to create a native_widget_win that has no parent in
 239   // and later re-parent it.
 240   // TODO(avi): This is a cheat. Can this be made cleaner?
 241   sad_tab_params.parent = web_contents_->GetNativeView();
 242
 243   set_owned_by_client();
 244
 245   views::Widget* sad_tab = new views::Widget;
 246   sad_tab->Init(sad_tab_params);
 247   sad_tab->SetContentsView(this);
 248
 249   views::Widget::ReparentNativeView(sad_tab->GetNativeView(),
 250                                     web_contents_->GetNativeView());
 251   gfx::Rect bounds = web_contents_->GetContainerBounds();
 252   sad_tab->SetBounds(gfx::Rect(bounds.size()));
 253 }
 254
 255 void SadTabView::Close() {
 256   if (GetWidget())
 257     GetWidget()->Close();
 258 }
 259
 260 views::Label* SadTabView::CreateLabel(const base::string16& text) {
 261   views::Label* label = new views::Label(text);
 262   label->SetBackgroundColor(background()->get_color());
 263   label->SetEnabledColor(kTextColor);
 264   return label;
 265 }
 266
 267 views::Link* SadTabView::CreateLink(const base::string16& text) {
 268   views::Link* link = new views::Link(text);
 269   link->SetBackgroundColor(background()->get_color());
 270   link->SetEnabledColor(kTextColor);
 271   link->set_listener(this);
 272   return link;
 273 }
 274
 275 namespace chrome {
 276
 277 SadTab* SadTab::Create(content::WebContents* web_contents,
 278                        SadTabKind kind) {
 279   return new SadTabView(web_contents, kind);
 280 }
 281
 282 }  // namespace chrome