apps/shell_window.cc

   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 "apps/shell_window.h"
   6
   7 #include "apps/native_app_window.h"
   8 #include "apps/shell_window_geometry_cache.h"
   9 #include "apps/shell_window_registry.h"
  10 #include "base/strings/string_util.h"
  11 #include "base/strings/utf_string_conversions.h"
  12 #include "base/values.h"
  13 #include "chrome/browser/chrome_notification_types.h"
  14 #include "chrome/browser/extensions/extension_process_manager.h"
  15 #include "chrome/browser/extensions/extension_system.h"
  16 #include "chrome/browser/extensions/suggest_permission_util.h"
  17 #include "chrome/browser/lifetime/application_lifetime.h"
  18 #include "chrome/browser/profiles/profile.h"
  19 #include "chrome/common/extensions/extension.h"
  20 #include "chrome/common/extensions/extension_constants.h"
  21 #include "chrome/common/extensions/extension_messages.h"
  22 #include "chrome/common/extensions/manifest_handlers/icons_handler.h"
  23 #include "components/web_modal/web_contents_modal_dialog_manager.h"
  24 #include "content/public/browser/invalidate_type.h"
  25 #include "content/public/browser/navigation_entry.h"
  26 #include "content/public/browser/notification_details.h"
  27 #include "content/public/browser/notification_service.h"
  28 #include "content/public/browser/notification_source.h"
  29 #include "content/public/browser/notification_types.h"
  30 #include "content/public/browser/render_view_host.h"
  31 #include "content/public/browser/resource_dispatcher_host.h"
  32 #include "content/public/browser/web_contents.h"
  33 #include "content/public/common/media_stream_request.h"
  34 #include "extensions/browser/view_type_utils.h"
  35 #include "skia/ext/image_operations.h"
  36 #include "third_party/skia/include/core/SkRegion.h"
  37 #include "ui/gfx/image/image_skia.h"
  38 #include "ui/gfx/screen.h"
  39
  40 #if !defined(OS_MACOSX)
  41 #include "apps/pref_names.h"
  42 #include "base/prefs/pref_service.h"
  43 #endif
  44
  45 using content::ConsoleMessageLevel;
  46 using content::WebContents;
  47 using extensions::APIPermission;
  48 using web_modal::WebContentsModalDialogHost;
  49 using web_modal::WebContentsModalDialogManager;
  50
  51 namespace {
  52 const int kDefaultWidth = 512;
  53 const int kDefaultHeight = 384;
  54
  55 }  // namespace
  56
  57 namespace apps {
  58
  59 ShellWindow::CreateParams::CreateParams()
  60   : window_type(ShellWindow::WINDOW_TYPE_DEFAULT),
  61     frame(ShellWindow::FRAME_CHROME),
  62     transparent_background(false),
  63     bounds(INT_MIN, INT_MIN, 0, 0),
  64     creator_process_id(0),
  65     state(ui::SHOW_STATE_DEFAULT),
  66     hidden(false),
  67     resizable(true),
  68     focused(true) {}
  69
  70 ShellWindow::CreateParams::~CreateParams() {}
  71
  72 ShellWindow::Delegate::~Delegate() {}
  73
  74 ShellWindow::ShellWindow(Profile* profile,
  75                          Delegate* delegate,
  76                          const extensions::Extension* extension)
  77     : profile_(profile),
  78       extension_(extension),
  79       extension_id_(extension->id()),
  80       window_type_(WINDOW_TYPE_DEFAULT),
  81       delegate_(delegate),
  82       image_loader_ptr_factory_(this),
  83       fullscreen_for_window_api_(false),
  84       fullscreen_for_tab_(false) {
  85 }
  86
  87 void ShellWindow::Init(const GURL& url,
  88                        ShellWindowContents* shell_window_contents,
  89                        const CreateParams& params) {
  90   // Initialize the render interface and web contents
  91   shell_window_contents_.reset(shell_window_contents);
  92   shell_window_contents_->Initialize(profile(), url);
  93   WebContents* web_contents = shell_window_contents_->GetWebContents();
  94   delegate_->InitWebContents(web_contents);
  95   WebContentsModalDialogManager::CreateForWebContents(web_contents);
  96
  97   web_contents->SetDelegate(this);
  98   WebContentsModalDialogManager::FromWebContents(web_contents)->
  99       SetDelegate(this);
 100   extensions::SetViewType(web_contents, extensions::VIEW_TYPE_APP_SHELL);
 101
 102   // Initialize the window
 103   window_type_ = params.window_type;
 104
 105   gfx::Rect bounds = params.bounds;
 106
 107   if (bounds.width() == 0)
 108     bounds.set_width(kDefaultWidth);
 109   if (bounds.height() == 0)
 110     bounds.set_height(kDefaultHeight);
 111
 112   // If left and top are left undefined, the native shell window will center
 113   // the window on the main screen in a platform-defined manner.
 114
 115   CreateParams new_params = params;
 116
 117   // Load cached state if it exists.
 118   if (!params.window_key.empty()) {
 119     window_key_ = params.window_key;
 120
 121     ShellWindowGeometryCache* cache = ShellWindowGeometryCache::Get(profile());
 122
 123     gfx::Rect cached_bounds;
 124     gfx::Rect cached_screen_bounds;
 125     ui::WindowShowState cached_state = ui::SHOW_STATE_DEFAULT;
 126     if (cache->GetGeometry(extension()->id(), params.window_key, &cached_bounds,
 127                            &cached_screen_bounds, &cached_state)) {
 128       // App window has cached screen bounds, make sure it fits on screen in
 129       // case the screen resolution changed.
 130       gfx::Screen* screen = gfx::Screen::GetNativeScreen();
 131       gfx::Display display = screen->GetDisplayMatching(cached_bounds);
 132       gfx::Rect current_screen_bounds = display.work_area();
 133       AdjustBoundsToBeVisibleOnScreen(cached_bounds,
 134                                       cached_screen_bounds,
 135                                       current_screen_bounds,
 136                                       params.minimum_size,
 137                                       &bounds);
 138       new_params.state = cached_state;
 139     }
 140   }
 141
 142   gfx::Size& minimum_size = new_params.minimum_size;
 143   gfx::Size& maximum_size = new_params.maximum_size;
 144
 145   // In the case that minimum size > maximum size, we consider the minimum
 146   // size to be more important.
 147   if (maximum_size.width() && maximum_size.width() < minimum_size.width())
 148     maximum_size.set_width(minimum_size.width());
 149   if (maximum_size.height() && maximum_size.height() < minimum_size.height())
 150     maximum_size.set_height(minimum_size.height());
 151
 152   if (maximum_size.width() && bounds.width() > maximum_size.width())
 153     bounds.set_width(maximum_size.width());
 154   if (bounds.width() != INT_MIN && bounds.width() < minimum_size.width())
 155     bounds.set_width(minimum_size.width());
 156
 157   if (maximum_size.height() && bounds.height() > maximum_size.height())
 158     bounds.set_height(maximum_size.height());
 159   if (bounds.height() != INT_MIN && bounds.height() < minimum_size.height())
 160     bounds.set_height(minimum_size.height());
 161
 162   new_params.bounds = bounds;
 163
 164   native_app_window_.reset(delegate_->CreateNativeAppWindow(this, new_params));
 165
 166   if (!new_params.hidden) {
 167     if (window_type_is_panel())
 168       GetBaseWindow()->ShowInactive();  // Panels are not activated by default.
 169     else
 170       GetBaseWindow()->Show();
 171   }
 172
 173   if (new_params.state == ui::SHOW_STATE_FULLSCREEN)
 174     Fullscreen();
 175   else if (new_params.state == ui::SHOW_STATE_MAXIMIZED)
 176     Maximize();
 177   else if (new_params.state == ui::SHOW_STATE_MINIMIZED)
 178     Minimize();
 179
 180   OnNativeWindowChanged();
 181
 182   // When the render view host is changed, the native window needs to know
 183   // about it in case it has any setup to do to make the renderer appear
 184   // properly. In particular, on Windows, the view's clickthrough region needs
 185   // to be set.
 186   registrar_.Add(this, content::NOTIFICATION_RENDER_VIEW_HOST_CHANGED,
 187                  content::Source<content::NavigationController>(
 188                     &web_contents->GetController()));
 189   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED,
 190                  content::Source<Profile>(profile_));
 191   // Close when the browser process is exiting.
 192   registrar_.Add(this, chrome::NOTIFICATION_APP_TERMINATING,
 193                  content::NotificationService::AllSources());
 194
 195   shell_window_contents_->LoadContents(params.creator_process_id);
 196
 197   // Prevent the browser process from shutting down while this window is open.
 198   chrome::StartKeepAlive();
 199
 200   UpdateExtensionAppIcon();
 201
 202   ShellWindowRegistry::Get(profile_)->AddShellWindow(this);
 203 }
 204
 205 ShellWindow::~ShellWindow() {
 206   // Unregister now to prevent getting NOTIFICATION_APP_TERMINATING if we're the
 207   // last window open.
 208   registrar_.RemoveAll();
 209
 210   // Remove shutdown prevention.
 211   chrome::EndKeepAlive();
 212 }
 213
 214 void ShellWindow::RequestMediaAccessPermission(
 215     content::WebContents* web_contents,
 216     const content::MediaStreamRequest& request,
 217     const content::MediaResponseCallback& callback) {
 218   delegate_->RequestMediaAccessPermission(web_contents, request, callback,
 219                                           extension());
 220 }
 221
 222 WebContents* ShellWindow::OpenURLFromTab(WebContents* source,
 223                                          const content::OpenURLParams& params) {
 224   // Don't allow the current tab to be navigated. It would be nice to map all
 225   // anchor tags (even those without target="_blank") to new tabs, but right
 226   // now we can't distinguish between those and <meta> refreshes or window.href
 227   // navigations, which we don't want to allow.
 228   // TOOD(mihaip): Can we check for user gestures instead?
 229   WindowOpenDisposition disposition = params.disposition;
 230   if (disposition == CURRENT_TAB) {
 231     AddMessageToDevToolsConsole(
 232         content::CONSOLE_MESSAGE_LEVEL_ERROR,
 233         base::StringPrintf(
 234             "Can't open same-window link to \"%s\"; try target=\"_blank\".",
 235             params.url.spec().c_str()));
 236     return NULL;
 237   }
 238
 239   // These dispositions aren't really navigations.
 240   if (disposition == SUPPRESS_OPEN || disposition == SAVE_TO_DISK ||
 241       disposition == IGNORE_ACTION) {
 242     return NULL;
 243   }
 244
 245   WebContents* contents = delegate_->OpenURLFromTab(profile_, source,
 246                                                     params);
 247   if (!contents) {
 248     AddMessageToDevToolsConsole(
 249         content::CONSOLE_MESSAGE_LEVEL_ERROR,
 250         base::StringPrintf(
 251             "Can't navigate to \"%s\"; apps do not support navigation.",
 252             params.url.spec().c_str()));
 253   }
 254
 255   return contents;
 256 }
 257
 258 void ShellWindow::AddNewContents(WebContents* source,
 259                                  WebContents* new_contents,
 260                                  WindowOpenDisposition disposition,
 261                                  const gfx::Rect& initial_pos,
 262                                  bool user_gesture,
 263                                  bool* was_blocked) {
 264   DCHECK(Profile::FromBrowserContext(new_contents->GetBrowserContext()) ==
 265       profile_);
 266   delegate_->AddNewContents(profile_, new_contents, disposition,
 267                             initial_pos, user_gesture, was_blocked);
 268 }
 269
 270 void ShellWindow::HandleKeyboardEvent(
 271     WebContents* source,
 272     const content::NativeWebKeyboardEvent& event) {
 273   native_app_window_->HandleKeyboardEvent(event);
 274 }
 275
 276 void ShellWindow::RequestToLockMouse(WebContents* web_contents,
 277                                      bool user_gesture,
 278                                      bool last_unlocked_by_target) {
 279   bool has_permission = IsExtensionWithPermissionOrSuggestInConsole(
 280       APIPermission::kPointerLock,
 281       extension_,
 282       web_contents->GetRenderViewHost());
 283
 284   web_contents->GotResponseToLockMouseRequest(has_permission);
 285 }
 286
 287 void ShellWindow::OnNativeClose() {
 288   ShellWindowRegistry::Get(profile_)->RemoveShellWindow(this);
 289   if (shell_window_contents_)
 290     shell_window_contents_->NativeWindowClosed();
 291   delete this;
 292 }
 293
 294 void ShellWindow::OnNativeWindowChanged() {
 295   SaveWindowPosition();
 296   if (shell_window_contents_ && native_app_window_)
 297     shell_window_contents_->NativeWindowChanged(native_app_window_.get());
 298 }
 299
 300 void ShellWindow::OnNativeWindowActivated() {
 301   ShellWindowRegistry::Get(profile_)->ShellWindowActivated(this);
 302 }
 303
 304 scoped_ptr<gfx::Image> ShellWindow::GetAppListIcon() {
 305   // TODO(skuhne): We might want to use LoadImages in UpdateExtensionAppIcon
 306   // instead to let the extension give us pre-defined icons in the launcher
 307   // and the launcher list sizes. Since there is no mock yet, doing this now
 308   // seems a bit premature and we scale for the time being.
 309   if (app_icon_.IsEmpty())
 310     return make_scoped_ptr(new gfx::Image());
 311
 312   SkBitmap bmp = skia::ImageOperations::Resize(
 313         *app_icon_.ToSkBitmap(), skia::ImageOperations::RESIZE_BEST,
 314         extension_misc::EXTENSION_ICON_SMALLISH,
 315         extension_misc::EXTENSION_ICON_SMALLISH);
 316   return make_scoped_ptr(
 317       new gfx::Image(gfx::ImageSkia::CreateFrom1xBitmap(bmp)));
 318 }
 319
 320 content::WebContents* ShellWindow::web_contents() const {
 321   return shell_window_contents_->GetWebContents();
 322 }
 323
 324 NativeAppWindow* ShellWindow::GetBaseWindow() {
 325   return native_app_window_.get();
 326 }
 327
 328 gfx::NativeWindow ShellWindow::GetNativeWindow() {
 329   return GetBaseWindow()->GetNativeWindow();
 330 }
 331
 332 gfx::Rect ShellWindow::GetClientBounds() const {
 333   gfx::Rect bounds = native_app_window_->GetBounds();
 334   bounds.Inset(native_app_window_->GetFrameInsets());
 335   return bounds;
 336 }
 337
 338 string16 ShellWindow::GetTitle() const {
 339   // WebContents::GetTitle() will return the page's URL if there's no <title>
 340   // specified. However, we'd prefer to show the name of the extension in that
 341   // case, so we directly inspect the NavigationEntry's title.
 342   string16 title;
 343   if (!web_contents() ||
 344       !web_contents()->GetController().GetActiveEntry() ||
 345       web_contents()->GetController().GetActiveEntry()->GetTitle().empty()) {
 346     title = UTF8ToUTF16(extension()->name());
 347   } else {
 348     title = web_contents()->GetTitle();
 349   }
 350   const char16 kBadChars[] = { '\n', 0 };
 351   RemoveChars(title, kBadChars, &title);
 352   return title;
 353 }
 354
 355 void ShellWindow::SetAppIconUrl(const GURL& url) {
 356   // Avoid using any previous app icons were are being downloaded.
 357   image_loader_ptr_factory_.InvalidateWeakPtrs();
 358
 359   // Reset |app_icon_image_| to abort pending image load (if any).
 360   app_icon_image_.reset();
 361
 362   app_icon_url_ = url;
 363   web_contents()->DownloadImage(
 364       url,
 365       true,  // is a favicon
 366       delegate_->PreferredIconSize(),
 367       0,  // no maximum size
 368       base::Bind(&ShellWindow::DidDownloadFavicon,
 369                  image_loader_ptr_factory_.GetWeakPtr()));
 370 }
 371
 372 void ShellWindow::UpdateInputRegion(scoped_ptr<SkRegion> region) {
 373   native_app_window_->UpdateInputRegion(region.Pass());
 374 }
 375
 376 void ShellWindow::UpdateDraggableRegions(
 377     const std::vector<extensions::DraggableRegion>& regions) {
 378   native_app_window_->UpdateDraggableRegions(regions);
 379 }
 380
 381 void ShellWindow::UpdateAppIcon(const gfx::Image& image) {
 382   if (image.IsEmpty())
 383     return;
 384   app_icon_ = image;
 385   native_app_window_->UpdateWindowIcon();
 386   ShellWindowRegistry::Get(profile_)->ShellWindowIconChanged(this);
 387 }
 388
 389 void ShellWindow::Fullscreen() {
 390   fullscreen_for_window_api_ = true;
 391   GetBaseWindow()->SetFullscreen(true);
 392 }
 393
 394 void ShellWindow::Maximize() {
 395   GetBaseWindow()->Maximize();
 396 }
 397
 398 void ShellWindow::Minimize() {
 399   GetBaseWindow()->Minimize();
 400 }
 401
 402 void ShellWindow::Restore() {
 403   fullscreen_for_window_api_ = false;
 404   fullscreen_for_tab_ = false;
 405   if (GetBaseWindow()->IsFullscreenOrPending()) {
 406     GetBaseWindow()->SetFullscreen(false);
 407   } else {
 408     GetBaseWindow()->Restore();
 409   }
 410 }
 411
 412 //------------------------------------------------------------------------------
 413 // Private methods
 414
 415 void ShellWindow::DidDownloadFavicon(int id,
 416                                      int http_status_code,
 417                                      const GURL& image_url,
 418                                      int requested_size,
 419                                      const std::vector<SkBitmap>& bitmaps) {
 420   if (image_url != app_icon_url_ || bitmaps.empty())
 421     return;
 422
 423   // Bitmaps are ordered largest to smallest. Choose the smallest bitmap
 424   // whose height >= the preferred size.
 425   int largest_index = 0;
 426   for (size_t i = 1; i < bitmaps.size(); ++i) {
 427     if (bitmaps[i].height() < delegate_->PreferredIconSize())
 428       break;
 429     largest_index = i;
 430   }
 431   const SkBitmap& largest = bitmaps[largest_index];
 432   UpdateAppIcon(gfx::Image::CreateFrom1xBitmap(largest));
 433 }
 434
 435 void ShellWindow::OnExtensionIconImageChanged(extensions::IconImage* image) {
 436   DCHECK_EQ(app_icon_image_.get(), image);
 437
 438   UpdateAppIcon(gfx::Image(app_icon_image_->image_skia()));
 439 }
 440
 441 void ShellWindow::UpdateExtensionAppIcon() {
 442   // Avoid using any previous app icons were are being downloaded.
 443   image_loader_ptr_factory_.InvalidateWeakPtrs();
 444
 445   app_icon_image_.reset(new extensions::IconImage(
 446       profile(),
 447       extension(),
 448       extensions::IconsInfo::GetIcons(extension()),
 449       delegate_->PreferredIconSize(),
 450       extensions::IconsInfo::GetDefaultAppIcon(),
 451       this));
 452
 453   // Triggers actual image loading with 1x resources. The 2x resource will
 454   // be handled by IconImage class when requested.
 455   app_icon_image_->image_skia().GetRepresentation(ui::SCALE_FACTOR_100P);
 456 }
 457
 458 void ShellWindow::CloseContents(WebContents* contents) {
 459   native_app_window_->Close();
 460 }
 461
 462 bool ShellWindow::ShouldSuppressDialogs() {
 463   return true;
 464 }
 465
 466 content::ColorChooser* ShellWindow::OpenColorChooser(WebContents* web_contents,
 467                                                      SkColor initial_color) {
 468   return delegate_->ShowColorChooser(web_contents, initial_color);
 469 }
 470
 471 void ShellWindow::RunFileChooser(WebContents* tab,
 472                                  const content::FileChooserParams& params) {
 473   if (window_type_is_panel()) {
 474     // Panels can't host a file dialog, abort. TODO(stevenjb): allow file
 475     // dialogs to be unhosted but still close with the owning web contents.
 476     // crbug.com/172502.
 477     LOG(WARNING) << "File dialog opened by panel.";
 478     return;
 479   }
 480
 481   delegate_->RunFileChooser(tab, params);
 482 }
 483
 484 bool ShellWindow::IsPopupOrPanel(const WebContents* source) const {
 485   return true;
 486 }
 487
 488 void ShellWindow::MoveContents(WebContents* source, const gfx::Rect& pos) {
 489   native_app_window_->SetBounds(pos);
 490 }
 491
 492 void ShellWindow::NavigationStateChanged(
 493     const content::WebContents* source, unsigned changed_flags) {
 494   if (changed_flags & content::INVALIDATE_TYPE_TITLE)
 495     native_app_window_->UpdateWindowTitle();
 496   else if (changed_flags & content::INVALIDATE_TYPE_TAB)
 497     native_app_window_->UpdateWindowIcon();
 498 }
 499
 500 void ShellWindow::ToggleFullscreenModeForTab(content::WebContents* source,
 501                                              bool enter_fullscreen) {
 502 #if !defined(OS_MACOSX)
 503   // Do not enter fullscreen mode if disallowed by pref.
 504   // TODO(bartfab): Add a test once it becomes possible to simulate a user
 505   // gesture. http://crbug.com/174178
 506   if (enter_fullscreen &&
 507       !profile()->GetPrefs()->GetBoolean(prefs::kAppFullscreenAllowed)) {
 508     return;
 509   }
 510 #endif
 511
 512   if (!IsExtensionWithPermissionOrSuggestInConsole(
 513       APIPermission::kFullscreen,
 514       extension_,
 515       source->GetRenderViewHost())) {
 516     return;
 517   }
 518
 519   fullscreen_for_tab_ = enter_fullscreen;
 520
 521   if (enter_fullscreen) {
 522     native_app_window_->SetFullscreen(true);
 523   } else if (!fullscreen_for_window_api_) {
 524     native_app_window_->SetFullscreen(false);
 525   }
 526 }
 527
 528 bool ShellWindow::IsFullscreenForTabOrPending(
 529     const content::WebContents* source) const {
 530   return fullscreen_for_tab_;
 531 }
 532
 533 void ShellWindow::Observe(int type,
 534                           const content::NotificationSource& source,
 535                           const content::NotificationDetails& details) {
 536   switch (type) {
 537     case content::NOTIFICATION_RENDER_VIEW_HOST_CHANGED: {
 538       // TODO(jianli): once http://crbug.com/123007 is fixed, we'll no longer
 539       // need to make the native window (ShellWindowViews specially) update
 540       // the clickthrough region for the new RVH.
 541       native_app_window_->RenderViewHostChanged();
 542       break;
 543     }
 544     case chrome::NOTIFICATION_EXTENSION_UNLOADED: {
 545       const extensions::Extension* unloaded_extension =
 546           content::Details<extensions::UnloadedExtensionInfo>(
 547               details)->extension;
 548       if (extension_ == unloaded_extension)
 549         native_app_window_->Close();
 550       break;
 551     }
 552     case chrome::NOTIFICATION_APP_TERMINATING:
 553       native_app_window_->Close();
 554       break;
 555     default:
 556       NOTREACHED() << "Received unexpected notification";
 557   }
 558 }
 559
 560 void ShellWindow::SetWebContentsBlocked(content::WebContents* web_contents,
 561                                         bool blocked) {
 562   delegate_->SetWebContentsBlocked(web_contents, blocked);
 563 }
 564
 565 bool ShellWindow::IsWebContentsVisible(content::WebContents* web_contents) {
 566   return delegate_->IsWebContentsVisible(web_contents);
 567 }
 568
 569 extensions::ActiveTabPermissionGranter*
 570     ShellWindow::GetActiveTabPermissionGranter() {
 571   // Shell windows don't support the activeTab permission.
 572   return NULL;
 573 }
 574
 575 WebContentsModalDialogHost* ShellWindow::GetWebContentsModalDialogHost() {
 576   return native_app_window_.get();
 577 }
 578
 579 void ShellWindow::AddMessageToDevToolsConsole(ConsoleMessageLevel level,
 580                                               const std::string& message) {
 581   content::RenderViewHost* rvh = web_contents()->GetRenderViewHost();
 582   rvh->Send(new ExtensionMsg_AddMessageToConsole(
 583       rvh->GetRoutingID(), level, message));
 584 }
 585
 586 void ShellWindow::SaveWindowPosition() {
 587   if (window_key_.empty())
 588     return;
 589   if (!native_app_window_)
 590     return;
 591
 592   ShellWindowGeometryCache* cache = ShellWindowGeometryCache::Get(profile());
 593
 594   gfx::Rect bounds = native_app_window_->GetRestoredBounds();
 595   bounds.Inset(native_app_window_->GetFrameInsets());
 596   gfx::Rect screen_bounds =
 597       gfx::Screen::GetNativeScreen()->GetDisplayMatching(bounds).work_area();
 598   ui::WindowShowState window_state = native_app_window_->GetRestoredState();
 599   cache->SaveGeometry(extension()->id(),
 600                       window_key_,
 601                       bounds,
 602                       screen_bounds,
 603                       window_state);
 604 }
 605
 606 void ShellWindow::AdjustBoundsToBeVisibleOnScreen(
 607     const gfx::Rect& cached_bounds,
 608     const gfx::Rect& cached_screen_bounds,
 609     const gfx::Rect& current_screen_bounds,
 610     const gfx::Size& minimum_size,
 611     gfx::Rect* bounds) const {
 612   *bounds = cached_bounds;
 613
 614   // Reposition and resize the bounds if the cached_screen_bounds is different
 615   // from the current screen bounds and the current screen bounds doesn't
 616   // completely contain the bounds.
 617   if (cached_screen_bounds != current_screen_bounds &&
 618       !current_screen_bounds.Contains(cached_bounds)) {
 619     bounds->set_width(
 620         std::max(minimum_size.width(),
 621                  std::min(bounds->width(), current_screen_bounds.width())));
 622     bounds->set_height(
 623         std::max(minimum_size.height(),
 624                  std::min(bounds->height(), current_screen_bounds.height())));
 625     bounds->set_x(
 626         std::max(current_screen_bounds.x(),
 627                  std::min(bounds->x(),
 628                           current_screen_bounds.right() - bounds->width())));
 629     bounds->set_y(
 630         std::max(current_screen_bounds.y(),
 631                  std::min(bounds->y(),
 632                           current_screen_bounds.bottom() - bounds->height())));
 633   }
 634 }
 635
 636 // static
 637 SkRegion* ShellWindow::RawDraggableRegionsToSkRegion(
 638       const std::vector<extensions::DraggableRegion>& regions) {
 639   SkRegion* sk_region = new SkRegion;
 640   for (std::vector<extensions::DraggableRegion>::const_iterator iter =
 641            regions.begin();
 642        iter != regions.end(); ++iter) {
 643     const extensions::DraggableRegion& region = *iter;
 644     sk_region->op(
 645         region.bounds.x(),
 646         region.bounds.y(),
 647         region.bounds.right(),
 648         region.bounds.bottom(),
 649         region.draggable ? SkRegion::kUnion_Op : SkRegion::kDifference_Op);
 650   }
 651   return sk_region;
 652 }
 653
 654 }  // namespace apps