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      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/hung_renderer_view.h"
      6 
      7 #include "base/i18n/rtl.h"
      8 #include "base/memory/scoped_vector.h"
      9 #include "base/strings/utf_string_conversions.h"
     10 #include "chrome/browser/favicon/favicon_tab_helper.h"
     11 #include "chrome/browser/platform_util.h"
     12 #include "chrome/browser/ui/browser_dialogs.h"
     13 #include "chrome/browser/ui/browser_finder.h"
     14 #include "chrome/browser/ui/chrome_web_modal_dialog_manager_delegate.h"
     15 #include "chrome/browser/ui/tab_contents/core_tab_helper.h"
     16 #include "chrome/browser/ui/tab_contents/tab_contents_iterator.h"
     17 #include "chrome/browser/ui/views/constrained_window_views.h"
     18 #include "chrome/common/chrome_constants.h"
     19 #include "chrome/common/logging_chrome.h"
     20 #include "chrome/grit/generated_resources.h"
     21 #include "components/web_modal/web_contents_modal_dialog_host.h"
     22 #include "content/public/browser/render_process_host.h"
     23 #include "content/public/browser/render_view_host.h"
     24 #include "content/public/browser/web_contents.h"
     25 #include "content/public/common/result_codes.h"
     26 #include "grit/theme_resources.h"
     27 #include "ui/aura/window.h"
     28 #include "ui/base/l10n/l10n_util.h"
     29 #include "ui/base/resource/resource_bundle.h"
     30 #include "ui/gfx/canvas.h"
     31 #include "ui/views/controls/button/label_button.h"
     32 #include "ui/views/controls/image_view.h"
     33 #include "ui/views/controls/label.h"
     34 #include "ui/views/layout/grid_layout.h"
     35 #include "ui/views/layout/layout_constants.h"
     36 #include "ui/views/widget/widget.h"
     37 #include "ui/views/window/client_view.h"
     38 
     39 #if defined(OS_WIN)
     40 #include "chrome/browser/hang_monitor/hang_crash_dump_win.h"
     41 #include "chrome/browser/profiles/profile.h"
     42 #include "chrome/browser/shell_integration.h"
     43 #include "ui/base/win/shell.h"
     44 #include "ui/views/win/hwnd_util.h"
     45 #endif
     46 
     47 using content::WebContents;
     48 
     49 HungRendererDialogView* HungRendererDialogView::g_instance_ = NULL;
     50 
     51 ///////////////////////////////////////////////////////////////////////////////
     52 // HungPagesTableModel, public:
     53 
     54 HungPagesTableModel::HungPagesTableModel(Delegate* delegate)
     55     : observer_(NULL),
     56       delegate_(delegate) {
     57 }
     58 
     59 HungPagesTableModel::~HungPagesTableModel() {
     60 }
     61 
     62 content::RenderProcessHost* HungPagesTableModel::GetRenderProcessHost() {
     63   return tab_observers_.empty() ? NULL :
     64       tab_observers_[0]->web_contents()->GetRenderProcessHost();
     65 }
     66 
     67 content::RenderViewHost* HungPagesTableModel::GetRenderViewHost() {
     68   return tab_observers_.empty() ? NULL :
     69       tab_observers_[0]->web_contents()->GetRenderViewHost();
     70 }
     71 
     72 void HungPagesTableModel::InitForWebContents(WebContents* hung_contents) {
     73   tab_observers_.clear();
     74   if (hung_contents) {
     75     // Force hung_contents to be first.
     76     if (hung_contents) {
     77       tab_observers_.push_back(new WebContentsObserverImpl(this,
     78                                                            hung_contents));
     79     }
     80     for (TabContentsIterator it; !it.done(); it.Next()) {
     81       if (*it != hung_contents &&
     82           it->GetRenderProcessHost() == hung_contents->GetRenderProcessHost())
     83         tab_observers_.push_back(new WebContentsObserverImpl(this, *it));
     84     }
     85   }
     86   // The world is different.
     87   if (observer_)
     88     observer_->OnModelChanged();
     89 }
     90 
     91 ///////////////////////////////////////////////////////////////////////////////
     92 // HungPagesTableModel, ui::TableModel implementation:
     93 
     94 int HungPagesTableModel::RowCount() {
     95   return static_cast<int>(tab_observers_.size());
     96 }
     97 
     98 base::string16 HungPagesTableModel::GetText(int row, int column_id) {
     99   DCHECK(row >= 0 && row < RowCount());
    100   base::string16 title = tab_observers_[row]->web_contents()->GetTitle();
    101   if (title.empty())
    102     title = CoreTabHelper::GetDefaultTitle();
    103   // TODO(xji): Consider adding a special case if the title text is a URL,
    104   // since those should always have LTR directionality. Please refer to
    105   // http://crbug.com/6726 for more information.
    106   base::i18n::AdjustStringForLocaleDirection(&title);
    107   return title;
    108 }
    109 
    110 gfx::ImageSkia HungPagesTableModel::GetIcon(int row) {
    111   DCHECK(row >= 0 && row < RowCount());
    112   return FaviconTabHelper::FromWebContents(
    113       tab_observers_[row]->web_contents())->GetFavicon().AsImageSkia();
    114 }
    115 
    116 void HungPagesTableModel::SetObserver(ui::TableModelObserver* observer) {
    117   observer_ = observer;
    118 }
    119 
    120 void HungPagesTableModel::GetGroupRange(int model_index,
    121                                         views::GroupRange* range) {
    122   DCHECK(range);
    123   range->start = 0;
    124   range->length = RowCount();
    125 }
    126 
    127 void HungPagesTableModel::TabDestroyed(WebContentsObserverImpl* tab) {
    128   // Clean up tab_observers_ and notify our observer.
    129   TabObservers::iterator i = std::find(
    130       tab_observers_.begin(), tab_observers_.end(), tab);
    131   DCHECK(i != tab_observers_.end());
    132   int index = static_cast<int>(i - tab_observers_.begin());
    133   tab_observers_.erase(i);
    134   if (observer_)
    135     observer_->OnItemsRemoved(index, 1);
    136 
    137   // Notify the delegate.
    138   delegate_->TabDestroyed();
    139   // WARNING: we've likely been deleted.
    140 }
    141 
    142 HungPagesTableModel::WebContentsObserverImpl::WebContentsObserverImpl(
    143     HungPagesTableModel* model, WebContents* tab)
    144     : content::WebContentsObserver(tab),
    145       model_(model) {
    146 }
    147 
    148 void HungPagesTableModel::WebContentsObserverImpl::RenderProcessGone(
    149     base::TerminationStatus status) {
    150   model_->TabDestroyed(this);
    151 }
    152 
    153 void HungPagesTableModel::WebContentsObserverImpl::WebContentsDestroyed() {
    154   model_->TabDestroyed(this);
    155 }
    156 
    157 ///////////////////////////////////////////////////////////////////////////////
    158 // HungRendererDialogView
    159 
    160 // static
    161 gfx::ImageSkia* HungRendererDialogView::frozen_icon_ = NULL;
    162 
    163 // The dimensions of the hung pages list table view, in pixels.
    164 static const int kTableViewWidth = 300;
    165 static const int kTableViewHeight = 100;
    166 
    167 // Padding space in pixels between frozen icon to the info label, hung pages
    168 // list table view and the Kill pages button.
    169 static const int kCentralColumnPadding =
    170     views::kUnrelatedControlLargeHorizontalSpacing;
    171 
    172 ///////////////////////////////////////////////////////////////////////////////
    173 // HungRendererDialogView, public:
    174 
    175 // static
    176 HungRendererDialogView* HungRendererDialogView::Create(
    177     gfx::NativeView context) {
    178   if (!g_instance_) {
    179     g_instance_ = new HungRendererDialogView;
    180     views::DialogDelegate::CreateDialogWidget(g_instance_, context, NULL);
    181   }
    182   return g_instance_;
    183 }
    184 
    185 // static
    186 HungRendererDialogView* HungRendererDialogView::GetInstance() {
    187   return g_instance_;
    188 }
    189 
    190 // static
    191 bool HungRendererDialogView::IsFrameActive(WebContents* contents) {
    192   gfx::NativeView frame_view =
    193       platform_util::GetTopLevel(contents->GetNativeView());
    194   return platform_util::IsWindowActive(frame_view);
    195 }
    196 
    197 // static
    198 void HungRendererDialogView::KillRendererProcess(
    199     base::ProcessHandle process_handle) {
    200 #if defined(OS_WIN)
    201   // Try to generate a crash report for the hung process.
    202   CrashDumpAndTerminateHungChildProcess(process_handle);
    203 #else
    204   base::KillProcess(process_handle, content::RESULT_CODE_HUNG, false);
    205 #endif
    206 }
    207 
    208 
    209 HungRendererDialogView::HungRendererDialogView()
    210     : hung_pages_table_(NULL),
    211       kill_button_(NULL),
    212       initialized_(false) {
    213   InitClass();
    214 }
    215 
    216 HungRendererDialogView::~HungRendererDialogView() {
    217   hung_pages_table_->SetModel(NULL);
    218 }
    219 
    220 void HungRendererDialogView::ShowForWebContents(WebContents* contents) {
    221   DCHECK(contents && GetWidget());
    222 
    223   // Don't show the warning unless the foreground window is the frame, or this
    224   // window (but still invisible). If the user has another window or
    225   // application selected, activating ourselves is rude.
    226   if (!IsFrameActive(contents) &&
    227       !platform_util::IsWindowActive(GetWidget()->GetNativeWindow()))
    228     return;
    229 
    230   if (!GetWidget()->IsActive()) {
    231     // Place the dialog over content's browser window, similar to modal dialogs.
    232     Browser* browser = chrome::FindBrowserWithWebContents(contents);
    233     if (browser) {
    234       ChromeWebModalDialogManagerDelegate* manager = browser;
    235       UpdateBrowserModalDialogPosition(
    236           GetWidget(), manager->GetWebContentsModalDialogHost());
    237     }
    238 
    239     gfx::NativeView frame_view =
    240         platform_util::GetTopLevel(contents->GetNativeView());
    241     views::Widget* insert_after =
    242         views::Widget::GetWidgetForNativeView(frame_view);
    243     if (insert_after)
    244       GetWidget()->StackAboveWidget(insert_after);
    245 
    246 #if defined(OS_WIN)
    247     // Group the hung renderer dialog with the browsers with the same profile.
    248     Profile* profile =
    249         Profile::FromBrowserContext(contents->GetBrowserContext());
    250     ui::win::SetAppIdForWindow(
    251         ShellIntegration::GetChromiumModelIdForProfile(profile->GetPath()),
    252         views::HWNDForWidget(GetWidget()));
    253 #endif
    254 
    255     // We only do this if the window isn't active (i.e. hasn't been shown yet,
    256     // or is currently shown but deactivated for another WebContents). This is
    257     // because this window is a singleton, and it's possible another active
    258     // renderer may hang while this one is showing, and we don't want to reset
    259     // the list of hung pages for a potentially unrelated renderer while this
    260     // one is showing.
    261     hung_pages_table_model_->InitForWebContents(contents);
    262     GetWidget()->Show();
    263   }
    264 }
    265 
    266 void HungRendererDialogView::EndForWebContents(WebContents* contents) {
    267   DCHECK(contents);
    268   if (hung_pages_table_model_->RowCount() == 0 ||
    269       hung_pages_table_model_->GetRenderProcessHost() ==
    270       contents->GetRenderProcessHost()) {
    271     GetWidget()->Close();
    272     // Close is async, make sure we drop our references to the tab immediately
    273     // (it may be going away).
    274     hung_pages_table_model_->InitForWebContents(NULL);
    275   }
    276 }
    277 
    278 ///////////////////////////////////////////////////////////////////////////////
    279 // HungRendererDialogView, views::DialogDelegate implementation:
    280 
    281 base::string16 HungRendererDialogView::GetWindowTitle() const {
    282   return l10n_util::GetStringUTF16(IDS_BROWSER_HANGMONITOR_RENDERER_TITLE);
    283 }
    284 
    285 void HungRendererDialogView::WindowClosing() {
    286   // We are going to be deleted soon, so make sure our instance is destroyed.
    287   g_instance_ = NULL;
    288 }
    289 
    290 int HungRendererDialogView::GetDialogButtons() const {
    291   // We specifically don't want a CANCEL button here because that code path is
    292   // also called when the window is closed by the user clicking the X button in
    293   // the window's titlebar, and also if we call Window::Close. Rather, we want
    294   // the OK button to wait for responsiveness (and close the dialog) and our
    295   // additional button (which we create) to kill the process (which will result
    296   // in the dialog being destroyed).
    297   return ui::DIALOG_BUTTON_OK;
    298 }
    299 
    300 base::string16 HungRendererDialogView::GetDialogButtonLabel(
    301     ui::DialogButton button) const {
    302   if (button == ui::DIALOG_BUTTON_OK)
    303     return l10n_util::GetStringUTF16(IDS_BROWSER_HANGMONITOR_RENDERER_WAIT);
    304   return views::DialogDelegateView::GetDialogButtonLabel(button);
    305 }
    306 
    307 views::View* HungRendererDialogView::CreateExtraView() {
    308   DCHECK(!kill_button_);
    309   kill_button_ = new views::LabelButton(this,
    310       l10n_util::GetStringUTF16(IDS_BROWSER_HANGMONITOR_RENDERER_END));
    311   kill_button_->SetStyle(views::Button::STYLE_BUTTON);
    312   return kill_button_;
    313 }
    314 
    315 bool HungRendererDialogView::Accept(bool window_closing) {
    316   // Don't do anything if we're being called only because the dialog is being
    317   // destroyed and we don't supply a Cancel function...
    318   if (window_closing)
    319     return true;
    320 
    321   // Start waiting again for responsiveness.
    322   if (hung_pages_table_model_->GetRenderViewHost())
    323     hung_pages_table_model_->GetRenderViewHost()->RestartHangMonitorTimeout();
    324   return true;
    325 }
    326 
    327 
    328 bool HungRendererDialogView::UseNewStyleForThisDialog() const {
    329 #if defined(OS_WIN)
    330   // Use the old dialog style without Aero glass, otherwise the dialog will be
    331   // visually constrained to browser window bounds. See http://crbug.com/323278
    332   return ui::win::IsAeroGlassEnabled();
    333 #else
    334   return views::DialogDelegateView::UseNewStyleForThisDialog();
    335 #endif
    336 }
    337 
    338 ///////////////////////////////////////////////////////////////////////////////
    339 // HungRendererDialogView, views::ButtonListener implementation:
    340 
    341 void HungRendererDialogView::ButtonPressed(
    342     views::Button* sender, const ui::Event& event) {
    343   if (sender == kill_button_ &&
    344       hung_pages_table_model_->GetRenderProcessHost()) {
    345     base::ProcessHandle process_handle =
    346         hung_pages_table_model_->GetRenderProcessHost()->GetHandle();
    347 
    348     KillRendererProcess(process_handle);
    349   }
    350 }
    351 
    352 ///////////////////////////////////////////////////////////////////////////////
    353 // HungRendererDialogView, HungPagesTableModel::Delegate overrides:
    354 
    355 void HungRendererDialogView::TabDestroyed() {
    356   GetWidget()->Close();
    357 }
    358 
    359 ///////////////////////////////////////////////////////////////////////////////
    360 // HungRendererDialogView, views::View overrides:
    361 
    362 void HungRendererDialogView::ViewHierarchyChanged(
    363     const ViewHierarchyChangedDetails& details) {
    364   if (!initialized_ && details.is_add && details.child == this && GetWidget())
    365     Init();
    366 }
    367 
    368 ///////////////////////////////////////////////////////////////////////////////
    369 // HungRendererDialogView, private:
    370 
    371 void HungRendererDialogView::Init() {
    372   views::ImageView* frozen_icon_view = new views::ImageView;
    373   frozen_icon_view->SetImage(frozen_icon_);
    374 
    375   views::Label* info_label = new views::Label(
    376       l10n_util::GetStringUTF16(IDS_BROWSER_HANGMONITOR_RENDERER));
    377   info_label->SetMultiLine(true);
    378   info_label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
    379 
    380   hung_pages_table_model_.reset(new HungPagesTableModel(this));
    381   std::vector<ui::TableColumn> columns;
    382   columns.push_back(ui::TableColumn());
    383   hung_pages_table_ = new views::TableView(
    384       hung_pages_table_model_.get(), columns, views::ICON_AND_TEXT, true);
    385   hung_pages_table_->SetGrouper(hung_pages_table_model_.get());
    386 
    387   using views::GridLayout;
    388   using views::ColumnSet;
    389 
    390   GridLayout* layout = GridLayout::CreatePanel(this);
    391   SetLayoutManager(layout);
    392 
    393   const int double_column_set_id = 0;
    394   ColumnSet* column_set = layout->AddColumnSet(double_column_set_id);
    395   column_set->AddColumn(GridLayout::LEADING, GridLayout::LEADING, 0,
    396                         GridLayout::FIXED, frozen_icon_->width(), 0);
    397   column_set->AddPaddingColumn(0, kCentralColumnPadding);
    398   column_set->AddColumn(GridLayout::FILL, GridLayout::FILL, 1,
    399                         GridLayout::USE_PREF, 0, 0);
    400 
    401   layout->StartRow(0, double_column_set_id);
    402   layout->AddView(frozen_icon_view, 1, 3);
    403   // Add the label with a preferred width of 1, this way it doesn't effect the
    404   // overall preferred size of the dialog.
    405   layout->AddView(
    406       info_label, 1, 1, GridLayout::FILL, GridLayout::LEADING, 1, 0);
    407 
    408   layout->AddPaddingRow(0, views::kRelatedControlVerticalSpacing);
    409 
    410   layout->StartRow(0, double_column_set_id);
    411   layout->SkipColumns(1);
    412   layout->AddView(hung_pages_table_->CreateParentIfNecessary(), 1, 1,
    413                   views::GridLayout::FILL,
    414                   views::GridLayout::FILL, kTableViewWidth, kTableViewHeight);
    415 
    416   initialized_ = true;
    417 }
    418 
    419 // static
    420 void HungRendererDialogView::InitClass() {
    421   static bool initialized = false;
    422   if (!initialized) {
    423     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
    424     frozen_icon_ = rb.GetImageSkiaNamed(IDR_FROZEN_TAB_ICON);
    425     initialized = true;
    426   }
    427 }
    428 
    429 namespace chrome {
    430 
    431 void ShowHungRendererDialog(WebContents* contents) {
    432   if (logging::DialogsAreSuppressed())
    433     return;
    434 
    435   gfx::NativeView toplevel_view =
    436       platform_util::GetTopLevel(contents->GetNativeView());
    437   // Don't show the dialog if there is no root window for the renderer, because
    438   // it's invisible to the user (happens when the renderer is for prerendering
    439   // for example).
    440   if (!toplevel_view->GetRootWindow())
    441     return;
    442   HungRendererDialogView* view = HungRendererDialogView::Create(toplevel_view);
    443   view->ShowForWebContents(contents);
    444 }
    445 
    446 void HideHungRendererDialog(WebContents* contents) {
    447   if (!logging::DialogsAreSuppressed() && HungRendererDialogView::GetInstance())
    448     HungRendererDialogView::GetInstance()->EndForWebContents(contents);
    449 }
    450 
    451 }  // namespace chrome
    452