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/shell_window_geometry_cache.h"
   8 #include "apps/shell_window_registry.h"
   9 #include "apps/ui/native_app_window.h"
  10 #include "base/command_line.h"
  11 #include "base/strings/string_util.h"
  12 #include "base/strings/utf_string_conversions.h"
  13 #include "base/values.h"
  14 #include "chrome/browser/chrome_notification_types.h"
  15 #include "chrome/browser/extensions/extension_system.h"
  16 #include "chrome/browser/extensions/extension_web_contents_observer.h"
  17 #include "chrome/browser/extensions/suggest_permission_util.h"
  18 #include "chrome/browser/lifetime/application_lifetime.h"
  19 #include "chrome/browser/profiles/profile.h"
  20 #include "chrome/common/chrome_switches.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/browser/web_contents_view.h"
  34 #include "content/public/common/media_stream_request.h"
  35 #include "extensions/browser/process_manager.h"
  36 #include "extensions/browser/view_type_utils.h"
  37 #include "extensions/common/extension.h"
  38 #include "third_party/skia/include/core/SkRegion.h"
  39 #include "ui/gfx/screen.h"
  40
  41 #if !defined(OS_MACOSX)
  42 #include "apps/pref_names.h"
  43 #include "base/prefs/pref_service.h"
  44 #endif
  45
  46 using content::ConsoleMessageLevel;
  47 using content::WebContents;
  48 using extensions::APIPermission;
  49 using web_modal::WebContentsModalDialogHost;
  50 using web_modal::WebContentsModalDialogManager;
  51
  52 namespace {
  53
  54 const int kDefaultWidth = 512;
  55 const int kDefaultHeight = 384;
  56
  57 }  // namespace
  58
  59 namespace apps {
  60
  61 ShellWindow::SizeConstraints::SizeConstraints()
  62     : maximum_size_(kUnboundedSize, kUnboundedSize) {
  63 }
  64
  65 ShellWindow::SizeConstraints::SizeConstraints(const gfx::Size& min_size,
  66                                               const gfx::Size& max_size)
  67     : minimum_size_(min_size),
  68       maximum_size_(max_size) {
  69 }
  70
  71 ShellWindow::SizeConstraints::~SizeConstraints() {}
  72
  73 gfx::Size ShellWindow::SizeConstraints::ClampSize(gfx::Size size) const {
  74   const gfx::Size max_size = GetMaximumSize();
  75   if (max_size.width() != kUnboundedSize)
  76     size.set_width(std::min(size.width(), GetMaximumSize().width()));
  77   if (max_size.height() != kUnboundedSize)
  78     size.set_height(std::min(size.height(), GetMaximumSize().height()));
  79   size.SetToMax(GetMinimumSize());
  80   return size;
  81 }
  82
  83 bool ShellWindow::SizeConstraints::HasMinimumSize() const {
  84   return GetMinimumSize().width() != kUnboundedSize ||
  85       GetMinimumSize().height() != kUnboundedSize;
  86 }
  87
  88 bool ShellWindow::SizeConstraints::HasMaximumSize() const {
  89   const gfx::Size max_size = GetMaximumSize();
  90   return max_size.width() != kUnboundedSize ||
  91       max_size.height() != kUnboundedSize;
  92 }
  93
  94 bool ShellWindow::SizeConstraints::HasFixedSize() const {
  95   return !GetMinimumSize().IsEmpty() && GetMinimumSize() == GetMaximumSize();
  96 }
  97
  98 gfx::Size ShellWindow::SizeConstraints::GetMinimumSize() const {
  99   return minimum_size_;
 100 }
 101
 102 gfx::Size ShellWindow::SizeConstraints::GetMaximumSize() const {
 103   return gfx::Size(
 104       maximum_size_.width() == kUnboundedSize ?
 105           kUnboundedSize :
 106           std::max(maximum_size_.width(), minimum_size_.width()),
 107       maximum_size_.height() == kUnboundedSize ?
 108           kUnboundedSize :
 109           std::max(maximum_size_.height(), minimum_size_.height()));
 110 }
 111
 112 void ShellWindow::SizeConstraints::set_minimum_size(const gfx::Size& min_size) {
 113   minimum_size_ = min_size;
 114 }
 115
 116 void ShellWindow::SizeConstraints::set_maximum_size(const gfx::Size& max_size) {
 117   maximum_size_ = max_size;
 118 }
 119
 120 ShellWindow::CreateParams::CreateParams()
 121   : window_type(ShellWindow::WINDOW_TYPE_DEFAULT),
 122     frame(ShellWindow::FRAME_CHROME),
 123     transparent_background(false),
 124     bounds(INT_MIN, INT_MIN, 0, 0),
 125     creator_process_id(0),
 126     state(ui::SHOW_STATE_DEFAULT),
 127     hidden(false),
 128     resizable(true),
 129     focused(true),
 130     always_on_top(false) {}
 131
 132 ShellWindow::CreateParams::~CreateParams() {}
 133
 134 ShellWindow::Delegate::~Delegate() {}
 135
 136 ShellWindow::ShellWindow(Profile* profile,
 137                          Delegate* delegate,
 138                          const extensions::Extension* extension)
 139     : profile_(profile),
 140       extension_(extension),
 141       extension_id_(extension->id()),
 142       window_type_(WINDOW_TYPE_DEFAULT),
 143       delegate_(delegate),
 144       image_loader_ptr_factory_(this),
 145       fullscreen_types_(FULLSCREEN_TYPE_NONE),
 146       show_on_first_paint_(false),
 147       first_paint_complete_(false),
 148       cached_always_on_top_(false) {
 149 }
 150
 151 void ShellWindow::Init(const GURL& url,
 152                        ShellWindowContents* shell_window_contents,
 153                        const CreateParams& params) {
 154   // Initialize the render interface and web contents
 155   shell_window_contents_.reset(shell_window_contents);
 156   shell_window_contents_->Initialize(profile(), url);
 157   WebContents* web_contents = shell_window_contents_->GetWebContents();
 158   if (CommandLine::ForCurrentProcess()->HasSwitch(
 159         switches::kEnableAppsShowOnFirstPaint)) {
 160     content::WebContentsObserver::Observe(web_contents);
 161   }
 162   delegate_->InitWebContents(web_contents);
 163   WebContentsModalDialogManager::CreateForWebContents(web_contents);
 164   extensions::ExtensionWebContentsObserver::CreateForWebContents(web_contents);
 165
 166   web_contents->SetDelegate(this);
 167   WebContentsModalDialogManager::FromWebContents(web_contents)->
 168       SetDelegate(this);
 169   extensions::SetViewType(web_contents, extensions::VIEW_TYPE_APP_SHELL);
 170
 171   // Initialize the window
 172   CreateParams new_params = LoadDefaultsAndConstrain(params);
 173   window_type_ = new_params.window_type;
 174   window_key_ = new_params.window_key;
 175   size_constraints_ = SizeConstraints(new_params.minimum_size,
 176                                       new_params.maximum_size);
 177
 178   // Windows cannot be always-on-top in fullscreen mode for security reasons.
 179   cached_always_on_top_ = new_params.always_on_top;
 180   if (new_params.state == ui::SHOW_STATE_FULLSCREEN)
 181     new_params.always_on_top = false;
 182
 183   native_app_window_.reset(delegate_->CreateNativeAppWindow(this, new_params));
 184
 185   if (!new_params.hidden) {
 186     // Panels are not activated by default.
 187     Show(window_type_is_panel() || !new_params.focused ? SHOW_INACTIVE
 188                                                        : SHOW_ACTIVE);
 189   }
 190
 191   if (new_params.state == ui::SHOW_STATE_FULLSCREEN)
 192     Fullscreen();
 193   else if (new_params.state == ui::SHOW_STATE_MAXIMIZED)
 194     Maximize();
 195   else if (new_params.state == ui::SHOW_STATE_MINIMIZED)
 196     Minimize();
 197
 198   OnNativeWindowChanged();
 199
 200   // When the render view host is changed, the native window needs to know
 201   // about it in case it has any setup to do to make the renderer appear
 202   // properly. In particular, on Windows, the view's clickthrough region needs
 203   // to be set.
 204   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED,
 205                  content::Source<Profile>(profile_));
 206   // Close when the browser process is exiting.
 207   registrar_.Add(this, chrome::NOTIFICATION_APP_TERMINATING,
 208                  content::NotificationService::AllSources());
 209
 210   shell_window_contents_->LoadContents(new_params.creator_process_id);
 211
 212   if (CommandLine::ForCurrentProcess()->HasSwitch(
 213         switches::kEnableAppsShowOnFirstPaint)) {
 214     // We want to show the window only when the content has been painted. For
 215     // that to happen, we need to define a size for the content, otherwise the
 216     // layout will happen in a 0x0 area.
 217     // Note: WebContents::GetView() is guaranteed to be non-null.
 218     web_contents->GetView()->SizeContents(new_params.bounds.size());
 219   }
 220
 221   // Prevent the browser process from shutting down while this window is open.
 222   chrome::StartKeepAlive();
 223
 224   UpdateExtensionAppIcon();
 225
 226   ShellWindowRegistry::Get(profile_)->AddShellWindow(this);
 227 }
 228
 229 ShellWindow::~ShellWindow() {
 230   // Unregister now to prevent getting NOTIFICATION_APP_TERMINATING if we're the
 231   // last window open.
 232   registrar_.RemoveAll();
 233
 234   // Remove shutdown prevention.
 235   chrome::EndKeepAlive();
 236 }
 237
 238 void ShellWindow::RequestMediaAccessPermission(
 239     content::WebContents* web_contents,
 240     const content::MediaStreamRequest& request,
 241     const content::MediaResponseCallback& callback) {
 242   delegate_->RequestMediaAccessPermission(web_contents, request, callback,
 243                                           extension());
 244 }
 245
 246 WebContents* ShellWindow::OpenURLFromTab(WebContents* source,
 247                                          const content::OpenURLParams& params) {
 248   // Don't allow the current tab to be navigated. It would be nice to map all
 249   // anchor tags (even those without target="_blank") to new tabs, but right
 250   // now we can't distinguish between those and <meta> refreshes or window.href
 251   // navigations, which we don't want to allow.
 252   // TOOD(mihaip): Can we check for user gestures instead?
 253   WindowOpenDisposition disposition = params.disposition;
 254   if (disposition == CURRENT_TAB) {
 255     AddMessageToDevToolsConsole(
 256         content::CONSOLE_MESSAGE_LEVEL_ERROR,
 257         base::StringPrintf(
 258             "Can't open same-window link to \"%s\"; try target=\"_blank\".",
 259             params.url.spec().c_str()));
 260     return NULL;
 261   }
 262
 263   // These dispositions aren't really navigations.
 264   if (disposition == SUPPRESS_OPEN || disposition == SAVE_TO_DISK ||
 265       disposition == IGNORE_ACTION) {
 266     return NULL;
 267   }
 268
 269   WebContents* contents = delegate_->OpenURLFromTab(profile_, source,
 270                                                     params);
 271   if (!contents) {
 272     AddMessageToDevToolsConsole(
 273         content::CONSOLE_MESSAGE_LEVEL_ERROR,
 274         base::StringPrintf(
 275             "Can't navigate to \"%s\"; apps do not support navigation.",
 276             params.url.spec().c_str()));
 277   }
 278
 279   return contents;
 280 }
 281
 282 void ShellWindow::AddNewContents(WebContents* source,
 283                                  WebContents* new_contents,
 284                                  WindowOpenDisposition disposition,
 285                                  const gfx::Rect& initial_pos,
 286                                  bool user_gesture,
 287                                  bool* was_blocked) {
 288   DCHECK(Profile::FromBrowserContext(new_contents->GetBrowserContext()) ==
 289       profile_);
 290   delegate_->AddNewContents(profile_, new_contents, disposition,
 291                             initial_pos, user_gesture, was_blocked);
 292 }
 293
 294 bool ShellWindow::PreHandleKeyboardEvent(
 295     content::WebContents* source,
 296     const content::NativeWebKeyboardEvent& event,
 297     bool* is_keyboard_shortcut) {
 298   // Here, we can handle a key event before the content gets it. When we are
 299   // fullscreen and it is not forced, we want to allow the user to leave
 300   // when ESC is pressed.
 301   // However, if the application has the "overrideEscFullscreen" permission, we
 302   // should let it override that behavior.
 303   // ::HandleKeyboardEvent() will only be called if the KeyEvent's default
 304   // action is not prevented.
 305   // Thus, we should handle the KeyEvent here only if the permission is not set.
 306   if (event.windowsKeyCode == ui::VKEY_ESCAPE &&
 307       (fullscreen_types_ != FULLSCREEN_TYPE_NONE) &&
 308       ((fullscreen_types_ & FULLSCREEN_TYPE_FORCED) == 0) &&
 309       !extension_->HasAPIPermission(APIPermission::kOverrideEscFullscreen)) {
 310     Restore();
 311     return true;
 312   }
 313
 314   return false;
 315 }
 316
 317 void ShellWindow::HandleKeyboardEvent(
 318     WebContents* source,
 319     const content::NativeWebKeyboardEvent& event) {
 320   // If the window is currently fullscreen and not forced, ESC should leave
 321   // fullscreen.  If this code is being called for ESC, that means that the
 322   // KeyEvent's default behavior was not prevented by the content.
 323   if (event.windowsKeyCode == ui::VKEY_ESCAPE &&
 324       (fullscreen_types_ != FULLSCREEN_TYPE_NONE) &&
 325       ((fullscreen_types_ & FULLSCREEN_TYPE_FORCED) == 0)) {
 326     Restore();
 327     return;
 328   }
 329
 330   native_app_window_->HandleKeyboardEvent(event);
 331 }
 332
 333 void ShellWindow::RequestToLockMouse(WebContents* web_contents,
 334                                      bool user_gesture,
 335                                      bool last_unlocked_by_target) {
 336   bool has_permission = IsExtensionWithPermissionOrSuggestInConsole(
 337       APIPermission::kPointerLock,
 338       extension_,
 339       web_contents->GetRenderViewHost());
 340
 341   web_contents->GotResponseToLockMouseRequest(has_permission);
 342 }
 343
 344 void ShellWindow::DidFirstVisuallyNonEmptyPaint(int32 page_id) {
 345   first_paint_complete_ = true;
 346   if (show_on_first_paint_) {
 347     DCHECK(delayed_show_type_ == SHOW_ACTIVE ||
 348            delayed_show_type_ == SHOW_INACTIVE);
 349     Show(delayed_show_type_);
 350   }
 351 }
 352
 353 void ShellWindow::OnNativeClose() {
 354   ShellWindowRegistry::Get(profile_)->RemoveShellWindow(this);
 355   if (shell_window_contents_) {
 356     WebContents* web_contents = shell_window_contents_->GetWebContents();
 357     WebContentsModalDialogManager::FromWebContents(web_contents)->
 358         SetDelegate(NULL);
 359     shell_window_contents_->NativeWindowClosed();
 360   }
 361   delete this;
 362 }
 363
 364 void ShellWindow::OnNativeWindowChanged() {
 365   SaveWindowPosition();
 366   if (shell_window_contents_ && native_app_window_)
 367     shell_window_contents_->NativeWindowChanged(native_app_window_.get());
 368 }
 369
 370 void ShellWindow::OnNativeWindowActivated() {
 371   ShellWindowRegistry::Get(profile_)->ShellWindowActivated(this);
 372 }
 373
 374 content::WebContents* ShellWindow::web_contents() const {
 375   return shell_window_contents_->GetWebContents();
 376 }
 377
 378 NativeAppWindow* ShellWindow::GetBaseWindow() {
 379   return native_app_window_.get();
 380 }
 381
 382 gfx::NativeWindow ShellWindow::GetNativeWindow() {
 383   return GetBaseWindow()->GetNativeWindow();
 384 }
 385
 386 gfx::Rect ShellWindow::GetClientBounds() const {
 387   gfx::Rect bounds = native_app_window_->GetBounds();
 388   bounds.Inset(native_app_window_->GetFrameInsets());
 389   return bounds;
 390 }
 391
 392 base::string16 ShellWindow::GetTitle() const {
 393   // WebContents::GetTitle() will return the page's URL if there's no <title>
 394   // specified. However, we'd prefer to show the name of the extension in that
 395   // case, so we directly inspect the NavigationEntry's title.
 396   base::string16 title;
 397   if (!web_contents() ||
 398       !web_contents()->GetController().GetActiveEntry() ||
 399       web_contents()->GetController().GetActiveEntry()->GetTitle().empty()) {
 400     title = base::UTF8ToUTF16(extension()->name());
 401   } else {
 402     title = web_contents()->GetTitle();
 403   }
 404   const base::char16 kBadChars[] = { '\n', 0 };
 405   base::RemoveChars(title, kBadChars, &title);
 406   return title;
 407 }
 408
 409 void ShellWindow::SetAppIconUrl(const GURL& url) {
 410   // Avoid using any previous app icons were are being downloaded.
 411   image_loader_ptr_factory_.InvalidateWeakPtrs();
 412
 413   // Reset |app_icon_image_| to abort pending image load (if any).
 414   app_icon_image_.reset();
 415
 416   app_icon_url_ = url;
 417   web_contents()->DownloadImage(
 418       url,
 419       true,  // is a favicon
 420       0,  // no maximum size
 421       base::Bind(&ShellWindow::DidDownloadFavicon,
 422                  image_loader_ptr_factory_.GetWeakPtr()));
 423 }
 424
 425 void ShellWindow::UpdateShape(scoped_ptr<SkRegion> region) {
 426   native_app_window_->UpdateShape(region.Pass());
 427 }
 428
 429 void ShellWindow::UpdateDraggableRegions(
 430     const std::vector<extensions::DraggableRegion>& regions) {
 431   native_app_window_->UpdateDraggableRegions(regions);
 432 }
 433
 434 void ShellWindow::UpdateAppIcon(const gfx::Image& image) {
 435   if (image.IsEmpty())
 436     return;
 437   app_icon_ = image;
 438   native_app_window_->UpdateWindowIcon();
 439   ShellWindowRegistry::Get(profile_)->ShellWindowIconChanged(this);
 440 }
 441
 442 void ShellWindow::Fullscreen() {
 443 #if !defined(OS_MACOSX)
 444   // Do not enter fullscreen mode if disallowed by pref.
 445   if (!profile()->GetPrefs()->GetBoolean(prefs::kAppFullscreenAllowed))
 446     return;
 447 #endif
 448   fullscreen_types_ |= FULLSCREEN_TYPE_WINDOW_API;
 449   SetNativeWindowFullscreen(fullscreen_types_);
 450 }
 451
 452 void ShellWindow::Maximize() {
 453   GetBaseWindow()->Maximize();
 454 }
 455
 456 void ShellWindow::Minimize() {
 457   GetBaseWindow()->Minimize();
 458 }
 459
 460 void ShellWindow::Restore() {
 461   if (fullscreen_types_ != FULLSCREEN_TYPE_NONE) {
 462     fullscreen_types_ = FULLSCREEN_TYPE_NONE;
 463     SetNativeWindowFullscreen(fullscreen_types_);
 464   } else {
 465     GetBaseWindow()->Restore();
 466   }
 467 }
 468
 469 void ShellWindow::OSFullscreen() {
 470 #if !defined(OS_MACOSX)
 471   // Do not enter fullscreen mode if disallowed by pref.
 472   if (!profile()->GetPrefs()->GetBoolean(prefs::kAppFullscreenAllowed))
 473     return;
 474 #endif
 475   fullscreen_types_ |= FULLSCREEN_TYPE_OS;
 476   SetNativeWindowFullscreen(fullscreen_types_);
 477 }
 478
 479 void ShellWindow::ForcedFullscreen() {
 480   fullscreen_types_ |= FULLSCREEN_TYPE_FORCED;
 481   SetNativeWindowFullscreen(fullscreen_types_);
 482 }
 483
 484 void ShellWindow::SetMinimumSize(const gfx::Size& min_size) {
 485   size_constraints_.set_minimum_size(min_size);
 486   OnSizeConstraintsChanged();
 487 }
 488
 489 void ShellWindow::SetMaximumSize(const gfx::Size& max_size) {
 490   size_constraints_.set_maximum_size(max_size);
 491   OnSizeConstraintsChanged();
 492 }
 493
 494 void ShellWindow::Show(ShowType show_type) {
 495   if (CommandLine::ForCurrentProcess()->HasSwitch(
 496         switches::kEnableAppsShowOnFirstPaint)) {
 497     show_on_first_paint_ = true;
 498
 499     if (!first_paint_complete_) {
 500       delayed_show_type_ = show_type;
 501       return;
 502     }
 503   }
 504
 505   switch (show_type) {
 506     case SHOW_ACTIVE:
 507       GetBaseWindow()->Show();
 508       break;
 509     case SHOW_INACTIVE:
 510       GetBaseWindow()->ShowInactive();
 511       break;
 512   }
 513 }
 514
 515 void ShellWindow::Hide() {
 516   // This is there to prevent race conditions with Hide() being called before
 517   // there was a non-empty paint. It should have no effect in a non-racy
 518   // scenario where the application is hiding then showing a window: the second
 519   // show will not be delayed.
 520   show_on_first_paint_ = false;
 521   GetBaseWindow()->Hide();
 522 }
 523
 524 void ShellWindow::SetAlwaysOnTop(bool always_on_top) {
 525   if (cached_always_on_top_ == always_on_top)
 526     return;
 527
 528   cached_always_on_top_ = always_on_top;
 529
 530   // As a security measure, do not allow fullscreen windows to be on top.
 531   // The property will be applied when the window exits fullscreen.
 532   bool fullscreen = (fullscreen_types_ != FULLSCREEN_TYPE_NONE);
 533   if (!fullscreen)
 534     native_app_window_->SetAlwaysOnTop(always_on_top);
 535
 536   OnNativeWindowChanged();
 537 }
 538
 539 bool ShellWindow::IsAlwaysOnTop() const {
 540   return cached_always_on_top_;
 541 }
 542
 543 //------------------------------------------------------------------------------
 544 // Private methods
 545
 546 void ShellWindow::DidDownloadFavicon(
 547     int id,
 548     int http_status_code,
 549     const GURL& image_url,
 550     const std::vector<SkBitmap>& bitmaps,
 551     const std::vector<gfx::Size>& original_bitmap_sizes) {
 552   if (image_url != app_icon_url_ || bitmaps.empty())
 553     return;
 554
 555   // Bitmaps are ordered largest to smallest. Choose the smallest bitmap
 556   // whose height >= the preferred size.
 557   int largest_index = 0;
 558   for (size_t i = 1; i < bitmaps.size(); ++i) {
 559     if (bitmaps[i].height() < delegate_->PreferredIconSize())
 560       break;
 561     largest_index = i;
 562   }
 563   const SkBitmap& largest = bitmaps[largest_index];
 564   UpdateAppIcon(gfx::Image::CreateFrom1xBitmap(largest));
 565 }
 566
 567 void ShellWindow::OnExtensionIconImageChanged(extensions::IconImage* image) {
 568   DCHECK_EQ(app_icon_image_.get(), image);
 569
 570   UpdateAppIcon(gfx::Image(app_icon_image_->image_skia()));
 571 }
 572
 573 void ShellWindow::UpdateExtensionAppIcon() {
 574   // Avoid using any previous app icons were are being downloaded.
 575   image_loader_ptr_factory_.InvalidateWeakPtrs();
 576
 577   app_icon_image_.reset(new extensions::IconImage(
 578       profile(),
 579       extension(),
 580       extensions::IconsInfo::GetIcons(extension()),
 581       delegate_->PreferredIconSize(),
 582       extensions::IconsInfo::GetDefaultAppIcon(),
 583       this));
 584
 585   // Triggers actual image loading with 1x resources. The 2x resource will
 586   // be handled by IconImage class when requested.
 587   app_icon_image_->image_skia().GetRepresentation(1.0f);
 588 }
 589
 590 void ShellWindow::OnSizeConstraintsChanged() {
 591   native_app_window_->UpdateWindowMinMaxSize();
 592   gfx::Rect bounds = GetClientBounds();
 593   gfx::Size constrained_size = size_constraints_.ClampSize(bounds.size());
 594   if (bounds.size() != constrained_size) {
 595     bounds.set_size(constrained_size);
 596     native_app_window_->SetBounds(bounds);
 597   }
 598   OnNativeWindowChanged();
 599 }
 600
 601 void ShellWindow::SetNativeWindowFullscreen(int fullscreen_types) {
 602   native_app_window_->SetFullscreen(fullscreen_types);
 603
 604   if (!cached_always_on_top_)
 605     return;
 606
 607   bool is_on_top = native_app_window_->IsAlwaysOnTop();
 608   bool fullscreen = (fullscreen_types != FULLSCREEN_TYPE_NONE);
 609   if (fullscreen && is_on_top) {
 610     // When entering fullscreen, ensure windows are not always-on-top.
 611     native_app_window_->SetAlwaysOnTop(false);
 612   } else if (!fullscreen && !is_on_top) {
 613     // When exiting fullscreen, reinstate always-on-top.
 614     native_app_window_->SetAlwaysOnTop(true);
 615   }
 616 }
 617
 618 void ShellWindow::CloseContents(WebContents* contents) {
 619   native_app_window_->Close();
 620 }
 621
 622 bool ShellWindow::ShouldSuppressDialogs() {
 623   return true;
 624 }
 625
 626 content::ColorChooser* ShellWindow::OpenColorChooser(
 627       WebContents* web_contents,
 628       SkColor initial_color,
 629       const std::vector<content::ColorSuggestion>& suggestionss) {
 630   return delegate_->ShowColorChooser(web_contents, initial_color);
 631 }
 632
 633 void ShellWindow::RunFileChooser(WebContents* tab,
 634                                  const content::FileChooserParams& params) {
 635   if (window_type_is_panel()) {
 636     // Panels can't host a file dialog, abort. TODO(stevenjb): allow file
 637     // dialogs to be unhosted but still close with the owning web contents.
 638     // crbug.com/172502.
 639     LOG(WARNING) << "File dialog opened by panel.";
 640     return;
 641   }
 642
 643   delegate_->RunFileChooser(tab, params);
 644 }
 645
 646 bool ShellWindow::IsPopupOrPanel(const WebContents* source) const {
 647   return true;
 648 }
 649
 650 void ShellWindow::MoveContents(WebContents* source, const gfx::Rect& pos) {
 651   native_app_window_->SetBounds(pos);
 652 }
 653
 654 void ShellWindow::NavigationStateChanged(
 655     const content::WebContents* source, unsigned changed_flags) {
 656   if (changed_flags & content::INVALIDATE_TYPE_TITLE)
 657     native_app_window_->UpdateWindowTitle();
 658   else if (changed_flags & content::INVALIDATE_TYPE_TAB)
 659     native_app_window_->UpdateWindowIcon();
 660 }
 661
 662 void ShellWindow::ToggleFullscreenModeForTab(content::WebContents* source,
 663                                              bool enter_fullscreen) {
 664 #if !defined(OS_MACOSX)
 665   // Do not enter fullscreen mode if disallowed by pref.
 666   // TODO(bartfab): Add a test once it becomes possible to simulate a user
 667   // gesture. http://crbug.com/174178
 668   if (enter_fullscreen &&
 669       !profile()->GetPrefs()->GetBoolean(prefs::kAppFullscreenAllowed)) {
 670     return;
 671   }
 672 #endif
 673
 674   if (!IsExtensionWithPermissionOrSuggestInConsole(
 675       APIPermission::kFullscreen,
 676       extension_,
 677       source->GetRenderViewHost())) {
 678     return;
 679   }
 680
 681   if (enter_fullscreen)
 682     fullscreen_types_ |= FULLSCREEN_TYPE_HTML_API;
 683   else
 684     fullscreen_types_ &= ~FULLSCREEN_TYPE_HTML_API;
 685   SetNativeWindowFullscreen(fullscreen_types_);
 686 }
 687
 688 bool ShellWindow::IsFullscreenForTabOrPending(
 689     const content::WebContents* source) const {
 690   return ((fullscreen_types_ & FULLSCREEN_TYPE_HTML_API) != 0);
 691 }
 692
 693 void ShellWindow::Observe(int type,
 694                           const content::NotificationSource& source,
 695                           const content::NotificationDetails& details) {
 696   switch (type) {
 697     case chrome::NOTIFICATION_EXTENSION_UNLOADED: {
 698       const extensions::Extension* unloaded_extension =
 699           content::Details<extensions::UnloadedExtensionInfo>(
 700               details)->extension;
 701       if (extension_ == unloaded_extension)
 702         native_app_window_->Close();
 703       break;
 704     }
 705     case chrome::NOTIFICATION_APP_TERMINATING:
 706       native_app_window_->Close();
 707       break;
 708     default:
 709       NOTREACHED() << "Received unexpected notification";
 710   }
 711 }
 712
 713 void ShellWindow::SetWebContentsBlocked(content::WebContents* web_contents,
 714                                         bool blocked) {
 715   delegate_->SetWebContentsBlocked(web_contents, blocked);
 716 }
 717
 718 bool ShellWindow::IsWebContentsVisible(content::WebContents* web_contents) {
 719   return delegate_->IsWebContentsVisible(web_contents);
 720 }
 721
 722 extensions::ActiveTabPermissionGranter*
 723     ShellWindow::GetActiveTabPermissionGranter() {
 724   // Shell windows don't support the activeTab permission.
 725   return NULL;
 726 }
 727
 728 WebContentsModalDialogHost* ShellWindow::GetWebContentsModalDialogHost() {
 729   return native_app_window_.get();
 730 }
 731
 732 void ShellWindow::AddMessageToDevToolsConsole(ConsoleMessageLevel level,
 733                                               const std::string& message) {
 734   content::RenderViewHost* rvh = web_contents()->GetRenderViewHost();
 735   rvh->Send(new ExtensionMsg_AddMessageToConsole(
 736       rvh->GetRoutingID(), level, message));
 737 }
 738
 739 void ShellWindow::SaveWindowPosition() {
 740   if (window_key_.empty())
 741     return;
 742   if (!native_app_window_)
 743     return;
 744
 745   ShellWindowGeometryCache* cache = ShellWindowGeometryCache::Get(profile());
 746
 747   gfx::Rect bounds = native_app_window_->GetRestoredBounds();
 748   bounds.Inset(native_app_window_->GetFrameInsets());
 749   gfx::Rect screen_bounds =
 750       gfx::Screen::GetNativeScreen()->GetDisplayMatching(bounds).work_area();
 751   ui::WindowShowState window_state = native_app_window_->GetRestoredState();
 752   cache->SaveGeometry(extension()->id(),
 753                       window_key_,
 754                       bounds,
 755                       screen_bounds,
 756                       window_state);
 757 }
 758
 759 void ShellWindow::AdjustBoundsToBeVisibleOnScreen(
 760     const gfx::Rect& cached_bounds,
 761     const gfx::Rect& cached_screen_bounds,
 762     const gfx::Rect& current_screen_bounds,
 763     const gfx::Size& minimum_size,
 764     gfx::Rect* bounds) const {
 765   *bounds = cached_bounds;
 766
 767   // Reposition and resize the bounds if the cached_screen_bounds is different
 768   // from the current screen bounds and the current screen bounds doesn't
 769   // completely contain the bounds.
 770   if (cached_screen_bounds != current_screen_bounds &&
 771       !current_screen_bounds.Contains(cached_bounds)) {
 772     bounds->set_width(
 773         std::max(minimum_size.width(),
 774                  std::min(bounds->width(), current_screen_bounds.width())));
 775     bounds->set_height(
 776         std::max(minimum_size.height(),
 777                  std::min(bounds->height(), current_screen_bounds.height())));
 778     bounds->set_x(
 779         std::max(current_screen_bounds.x(),
 780                  std::min(bounds->x(),
 781                           current_screen_bounds.right() - bounds->width())));
 782     bounds->set_y(
 783         std::max(current_screen_bounds.y(),
 784                  std::min(bounds->y(),
 785                           current_screen_bounds.bottom() - bounds->height())));
 786   }
 787 }
 788
 789 ShellWindow::CreateParams ShellWindow::LoadDefaultsAndConstrain(
 790     CreateParams params) const {
 791   if (params.bounds.width() == 0)
 792     params.bounds.set_width(kDefaultWidth);
 793   if (params.bounds.height() == 0)
 794     params.bounds.set_height(kDefaultHeight);
 795
 796   // If left and top are left undefined, the native shell window will center
 797   // the window on the main screen in a platform-defined manner.
 798
 799   // Load cached state if it exists.
 800   if (!params.window_key.empty()) {
 801     ShellWindowGeometryCache* cache = ShellWindowGeometryCache::Get(profile());
 802
 803     gfx::Rect cached_bounds;
 804     gfx::Rect cached_screen_bounds;
 805     ui::WindowShowState cached_state = ui::SHOW_STATE_DEFAULT;
 806     if (cache->GetGeometry(extension()->id(), params.window_key,
 807                            &cached_bounds, &cached_screen_bounds,
 808                            &cached_state)) {
 809       // App window has cached screen bounds, make sure it fits on screen in
 810       // case the screen resolution changed.
 811       gfx::Screen* screen = gfx::Screen::GetNativeScreen();
 812       gfx::Display display = screen->GetDisplayMatching(cached_bounds);
 813       gfx::Rect current_screen_bounds = display.work_area();
 814       AdjustBoundsToBeVisibleOnScreen(cached_bounds,
 815                                       cached_screen_bounds,
 816                                       current_screen_bounds,
 817                                       params.minimum_size,
 818                                       &params.bounds);
 819       params.state = cached_state;
 820     }
 821   }
 822
 823   SizeConstraints size_constraints(params.minimum_size, params.maximum_size);
 824   params.bounds.set_size(size_constraints.ClampSize(params.bounds.size()));
 825   params.minimum_size = size_constraints.GetMinimumSize();
 826   params.maximum_size = size_constraints.GetMaximumSize();
 827
 828   return params;
 829 }
 830
 831 // static
 832 SkRegion* ShellWindow::RawDraggableRegionsToSkRegion(
 833       const std::vector<extensions::DraggableRegion>& regions) {
 834   SkRegion* sk_region = new SkRegion;
 835   for (std::vector<extensions::DraggableRegion>::const_iterator iter =
 836            regions.begin();
 837        iter != regions.end(); ++iter) {
 838     const extensions::DraggableRegion& region = *iter;
 839     sk_region->op(
 840         region.bounds.x(),
 841         region.bounds.y(),
 842         region.bounds.right(),
 843         region.bounds.bottom(),
 844         region.draggable ? SkRegion::kUnion_Op : SkRegion::kDifference_Op);
 845   }
 846   return sk_region;
 847 }
 848
 849 }  // namespace apps