src/extensions/browser/app_window/app_window.cc

   1 // Copyright 2014 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 "extensions/browser/app_window/app_window.h"
   6
   7 #include <algorithm>
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/command_line.h"
  12 #include "base/strings/string_util.h"
  13 #include "base/strings/utf_string_conversions.h"
  14 #include "base/values.h"
  15 #include "components/web_modal/web_contents_modal_dialog_manager.h"
  16 #include "content/public/browser/browser_context.h"
  17 #include "content/public/browser/invalidate_type.h"
  18 #include "content/public/browser/navigation_entry.h"
  19 #include "content/public/browser/notification_details.h"
  20 #include "content/public/browser/notification_service.h"
  21 #include "content/public/browser/notification_source.h"
  22 #include "content/public/browser/notification_types.h"
  23 #include "content/public/browser/render_view_host.h"
  24 #include "content/public/browser/resource_dispatcher_host.h"
  25 #include "content/public/browser/web_contents.h"
  26 #include "content/public/common/content_switches.h"
  27 #include "content/public/common/media_stream_request.h"
  28 #include "extensions/browser/app_window/app_delegate.h"
  29 #include "extensions/browser/app_window/app_web_contents_helper.h"
  30 #include "extensions/browser/app_window/app_window_client.h"
  31 #include "extensions/browser/app_window/app_window_geometry_cache.h"
  32 #include "extensions/browser/app_window/app_window_registry.h"
  33 #include "extensions/browser/app_window/native_app_window.h"
  34 #include "extensions/browser/app_window/size_constraints.h"
  35 #include "extensions/browser/extension_registry.h"
  36 #include "extensions/browser/extension_system.h"
  37 #include "extensions/browser/extensions_browser_client.h"
  38 #include "extensions/browser/notification_types.h"
  39 #include "extensions/browser/process_manager.h"
  40 #include "extensions/browser/suggest_permission_util.h"
  41 #include "extensions/browser/view_type_utils.h"
  42 #include "extensions/common/draggable_region.h"
  43 #include "extensions/common/extension.h"
  44 #include "extensions/common/manifest_handlers/icons_handler.h"
  45 #include "extensions/common/permissions/permissions_data.h"
  46 #include "extensions/common/switches.h"
  47 #include "extensions/grit/extensions_browser_resources.h"
  48 #include "third_party/skia/include/core/SkRegion.h"
  49 #include "ui/base/resource/resource_bundle.h"
  50 #include "ui/gfx/screen.h"
  51
  52 #if !defined(OS_MACOSX)
  53 #include "base/prefs/pref_service.h"
  54 #include "extensions/browser/pref_names.h"
  55 #endif
  56
  57 using content::BrowserContext;
  58 using content::ConsoleMessageLevel;
  59 using content::WebContents;
  60 using web_modal::WebContentsModalDialogHost;
  61 using web_modal::WebContentsModalDialogManager;
  62
  63 namespace extensions {
  64
  65 namespace {
  66
  67 const int kDefaultWidth = 512;
  68 const int kDefaultHeight = 384;
  69
  70 void SetConstraintProperty(const std::string& name,
  71                            int value,
  72                            base::DictionaryValue* bounds_properties) {
  73   if (value != SizeConstraints::kUnboundedSize)
  74     bounds_properties->SetInteger(name, value);
  75   else
  76     bounds_properties->Set(name, base::Value::CreateNullValue());
  77 }
  78
  79 void SetBoundsProperties(const gfx::Rect& bounds,
  80                          const gfx::Size& min_size,
  81                          const gfx::Size& max_size,
  82                          const std::string& bounds_name,
  83                          base::DictionaryValue* window_properties) {
  84   scoped_ptr<base::DictionaryValue> bounds_properties(
  85       new base::DictionaryValue());
  86
  87   bounds_properties->SetInteger("left", bounds.x());
  88   bounds_properties->SetInteger("top", bounds.y());
  89   bounds_properties->SetInteger("width", bounds.width());
  90   bounds_properties->SetInteger("height", bounds.height());
  91
  92   SetConstraintProperty("minWidth", min_size.width(), bounds_properties.get());
  93   SetConstraintProperty(
  94       "minHeight", min_size.height(), bounds_properties.get());
  95   SetConstraintProperty("maxWidth", max_size.width(), bounds_properties.get());
  96   SetConstraintProperty(
  97       "maxHeight", max_size.height(), bounds_properties.get());
  98
  99   window_properties->Set(bounds_name, bounds_properties.release());
 100 }
 101
 102 // Combines the constraints of the content and window, and returns constraints
 103 // for the window.
 104 gfx::Size GetCombinedWindowConstraints(const gfx::Size& window_constraints,
 105                                        const gfx::Size& content_constraints,
 106                                        const gfx::Insets& frame_insets) {
 107   gfx::Size combined_constraints(window_constraints);
 108   if (content_constraints.width() > 0) {
 109     combined_constraints.set_width(
 110         content_constraints.width() + frame_insets.width());
 111   }
 112   if (content_constraints.height() > 0) {
 113     combined_constraints.set_height(
 114         content_constraints.height() + frame_insets.height());
 115   }
 116   return combined_constraints;
 117 }
 118
 119 // Combines the constraints of the content and window, and returns constraints
 120 // for the content.
 121 gfx::Size GetCombinedContentConstraints(const gfx::Size& window_constraints,
 122                                         const gfx::Size& content_constraints,
 123                                         const gfx::Insets& frame_insets) {
 124   gfx::Size combined_constraints(content_constraints);
 125   if (window_constraints.width() > 0) {
 126     combined_constraints.set_width(
 127         std::max(0, window_constraints.width() - frame_insets.width()));
 128   }
 129   if (window_constraints.height() > 0) {
 130     combined_constraints.set_height(
 131         std::max(0, window_constraints.height() - frame_insets.height()));
 132   }
 133   return combined_constraints;
 134 }
 135
 136 }  // namespace
 137
 138 // AppWindow::BoundsSpecification
 139
 140 const int AppWindow::BoundsSpecification::kUnspecifiedPosition = INT_MIN;
 141
 142 AppWindow::BoundsSpecification::BoundsSpecification()
 143     : bounds(kUnspecifiedPosition, kUnspecifiedPosition, 0, 0) {}
 144
 145 AppWindow::BoundsSpecification::~BoundsSpecification() {}
 146
 147 void AppWindow::BoundsSpecification::ResetBounds() {
 148   bounds.SetRect(kUnspecifiedPosition, kUnspecifiedPosition, 0, 0);
 149 }
 150
 151 // AppWindow::CreateParams
 152
 153 AppWindow::CreateParams::CreateParams()
 154     : window_type(AppWindow::WINDOW_TYPE_DEFAULT),
 155       frame(AppWindow::FRAME_CHROME),
 156       has_frame_color(false),
 157       active_frame_color(SK_ColorBLACK),
 158       inactive_frame_color(SK_ColorBLACK),
 159       alpha_enabled(false),
 160       creator_process_id(0),
 161       state(ui::SHOW_STATE_DEFAULT),
 162       hidden(false),
 163       resizable(true),
 164       focused(true),
 165       always_on_top(false),
 166       visible_on_all_workspaces(false) {
 167 }
 168
 169 AppWindow::CreateParams::~CreateParams() {}
 170
 171 gfx::Rect AppWindow::CreateParams::GetInitialWindowBounds(
 172     const gfx::Insets& frame_insets) const {
 173   // Combine into a single window bounds.
 174   gfx::Rect combined_bounds(window_spec.bounds);
 175   if (content_spec.bounds.x() != BoundsSpecification::kUnspecifiedPosition)
 176     combined_bounds.set_x(content_spec.bounds.x() - frame_insets.left());
 177   if (content_spec.bounds.y() != BoundsSpecification::kUnspecifiedPosition)
 178     combined_bounds.set_y(content_spec.bounds.y() - frame_insets.top());
 179   if (content_spec.bounds.width() > 0) {
 180     combined_bounds.set_width(
 181         content_spec.bounds.width() + frame_insets.width());
 182   }
 183   if (content_spec.bounds.height() > 0) {
 184     combined_bounds.set_height(
 185         content_spec.bounds.height() + frame_insets.height());
 186   }
 187
 188   // Constrain the bounds.
 189   SizeConstraints constraints(
 190       GetCombinedWindowConstraints(
 191           window_spec.minimum_size, content_spec.minimum_size, frame_insets),
 192       GetCombinedWindowConstraints(
 193           window_spec.maximum_size, content_spec.maximum_size, frame_insets));
 194   combined_bounds.set_size(constraints.ClampSize(combined_bounds.size()));
 195
 196   return combined_bounds;
 197 }
 198
 199 gfx::Size AppWindow::CreateParams::GetContentMinimumSize(
 200     const gfx::Insets& frame_insets) const {
 201   return GetCombinedContentConstraints(window_spec.minimum_size,
 202                                        content_spec.minimum_size,
 203                                        frame_insets);
 204 }
 205
 206 gfx::Size AppWindow::CreateParams::GetContentMaximumSize(
 207     const gfx::Insets& frame_insets) const {
 208   return GetCombinedContentConstraints(window_spec.maximum_size,
 209                                        content_spec.maximum_size,
 210                                        frame_insets);
 211 }
 212
 213 gfx::Size AppWindow::CreateParams::GetWindowMinimumSize(
 214     const gfx::Insets& frame_insets) const {
 215   return GetCombinedWindowConstraints(window_spec.minimum_size,
 216                                       content_spec.minimum_size,
 217                                       frame_insets);
 218 }
 219
 220 gfx::Size AppWindow::CreateParams::GetWindowMaximumSize(
 221     const gfx::Insets& frame_insets) const {
 222   return GetCombinedWindowConstraints(window_spec.maximum_size,
 223                                       content_spec.maximum_size,
 224                                       frame_insets);
 225 }
 226
 227 // AppWindow
 228
 229 AppWindow::AppWindow(BrowserContext* context,
 230                      AppDelegate* app_delegate,
 231                      const Extension* extension)
 232     : browser_context_(context),
 233       extension_id_(extension->id()),
 234       window_type_(WINDOW_TYPE_DEFAULT),
 235       app_delegate_(app_delegate),
 236       image_loader_ptr_factory_(this),
 237       fullscreen_types_(FULLSCREEN_TYPE_NONE),
 238       show_on_first_paint_(false),
 239       first_paint_complete_(false),
 240       has_been_shown_(false),
 241       can_send_events_(false),
 242       is_hidden_(false),
 243       cached_always_on_top_(false),
 244       requested_alpha_enabled_(false) {
 245   ExtensionsBrowserClient* client = ExtensionsBrowserClient::Get();
 246   CHECK(!client->IsGuestSession(context) || context->IsOffTheRecord())
 247       << "Only off the record window may be opened in the guest mode.";
 248 }
 249
 250 void AppWindow::Init(const GURL& url,
 251                      AppWindowContents* app_window_contents,
 252                      const CreateParams& params) {
 253   // Initialize the render interface and web contents
 254   app_window_contents_.reset(app_window_contents);
 255   app_window_contents_->Initialize(browser_context(), url);
 256   WebContents* web_contents = app_window_contents_->GetWebContents();
 257   if (CommandLine::ForCurrentProcess()->HasSwitch(
 258           switches::kEnableAppsShowOnFirstPaint)) {
 259     content::WebContentsObserver::Observe(web_contents);
 260   }
 261   app_delegate_->InitWebContents(web_contents);
 262
 263   WebContentsModalDialogManager::CreateForWebContents(web_contents);
 264
 265   web_contents->SetDelegate(this);
 266   WebContentsModalDialogManager::FromWebContents(web_contents)
 267       ->SetDelegate(this);
 268   SetViewType(web_contents, VIEW_TYPE_APP_WINDOW);
 269
 270   // Initialize the window
 271   CreateParams new_params = LoadDefaults(params);
 272   window_type_ = new_params.window_type;
 273   window_key_ = new_params.window_key;
 274
 275   // Windows cannot be always-on-top in fullscreen mode for security reasons.
 276   cached_always_on_top_ = new_params.always_on_top;
 277   if (new_params.state == ui::SHOW_STATE_FULLSCREEN)
 278     new_params.always_on_top = false;
 279
 280   requested_alpha_enabled_ = new_params.alpha_enabled;
 281
 282   AppWindowClient* app_window_client = AppWindowClient::Get();
 283   native_app_window_.reset(
 284       app_window_client->CreateNativeAppWindow(this, new_params));
 285
 286   helper_.reset(new AppWebContentsHelper(
 287       browser_context_, extension_id_, web_contents, app_delegate_.get()));
 288
 289   popup_manager_.reset(
 290       new web_modal::PopupManager(GetWebContentsModalDialogHost()));
 291   popup_manager_->RegisterWith(web_contents);
 292
 293   UpdateExtensionAppIcon();
 294   AppWindowRegistry::Get(browser_context_)->AddAppWindow(this);
 295
 296   if (new_params.hidden) {
 297     // Although the window starts hidden by default, calling Hide() here
 298     // notifies observers of the window being hidden.
 299     Hide();
 300   } else {
 301     // Panels are not activated by default.
 302     Show(window_type_is_panel() || !new_params.focused ? SHOW_INACTIVE
 303                                                        : SHOW_ACTIVE);
 304   }
 305
 306   if (new_params.state == ui::SHOW_STATE_FULLSCREEN)
 307     Fullscreen();
 308   else if (new_params.state == ui::SHOW_STATE_MAXIMIZED)
 309     Maximize();
 310   else if (new_params.state == ui::SHOW_STATE_MINIMIZED)
 311     Minimize();
 312
 313   OnNativeWindowChanged();
 314
 315   // When the render view host is changed, the native window needs to know
 316   // about it in case it has any setup to do to make the renderer appear
 317   // properly. In particular, on Windows, the view's clickthrough region needs
 318   // to be set.
 319   ExtensionsBrowserClient* client = ExtensionsBrowserClient::Get();
 320   registrar_.Add(this,
 321                  NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
 322                  content::Source<content::BrowserContext>(
 323                      client->GetOriginalContext(browser_context_)));
 324   // Update the app menu if an ephemeral app becomes installed.
 325   registrar_.Add(
 326       this,
 327       NOTIFICATION_EXTENSION_WILL_BE_INSTALLED_DEPRECATED,
 328       content::Source<content::BrowserContext>(
 329           client->GetOriginalContext(browser_context_)));
 330
 331   // Close when the browser process is exiting.
 332   app_delegate_->SetTerminatingCallback(
 333       base::Bind(&NativeAppWindow::Close,
 334                  base::Unretained(native_app_window_.get())));
 335
 336   app_window_contents_->LoadContents(new_params.creator_process_id);
 337
 338   if (CommandLine::ForCurrentProcess()->HasSwitch(
 339           extensions::switches::kEnableAppsShowOnFirstPaint)) {
 340     // We want to show the window only when the content has been painted. For
 341     // that to happen, we need to define a size for the content, otherwise the
 342     // layout will happen in a 0x0 area.
 343     gfx::Insets frame_insets = native_app_window_->GetFrameInsets();
 344     gfx::Rect initial_bounds = new_params.GetInitialWindowBounds(frame_insets);
 345     initial_bounds.Inset(frame_insets);
 346     app_delegate_->ResizeWebContents(web_contents, initial_bounds.size());
 347   }
 348 }
 349
 350 AppWindow::~AppWindow() {
 351 }
 352
 353 void AppWindow::RequestMediaAccessPermission(
 354     content::WebContents* web_contents,
 355     const content::MediaStreamRequest& request,
 356     const content::MediaResponseCallback& callback) {
 357   DCHECK_EQ(AppWindow::web_contents(), web_contents);
 358   helper_->RequestMediaAccessPermission(request, callback);
 359 }
 360
 361 bool AppWindow::CheckMediaAccessPermission(content::WebContents* web_contents,
 362                                            const GURL& security_origin,
 363                                            content::MediaStreamType type) {
 364   DCHECK_EQ(AppWindow::web_contents(), web_contents);
 365   return helper_->CheckMediaAccessPermission(security_origin, type);
 366 }
 367
 368 WebContents* AppWindow::OpenURLFromTab(WebContents* source,
 369                                        const content::OpenURLParams& params) {
 370   DCHECK_EQ(web_contents(), source);
 371   return helper_->OpenURLFromTab(params);
 372 }
 373
 374 void AppWindow::AddNewContents(WebContents* source,
 375                                WebContents* new_contents,
 376                                WindowOpenDisposition disposition,
 377                                const gfx::Rect& initial_pos,
 378                                bool user_gesture,
 379                                bool* was_blocked) {
 380   DCHECK(new_contents->GetBrowserContext() == browser_context_);
 381   app_delegate_->AddNewContents(browser_context_,
 382                                 new_contents,
 383                                 disposition,
 384                                 initial_pos,
 385                                 user_gesture,
 386                                 was_blocked);
 387 }
 388
 389 bool AppWindow::PreHandleKeyboardEvent(
 390     content::WebContents* source,
 391     const content::NativeWebKeyboardEvent& event,
 392     bool* is_keyboard_shortcut) {
 393   const Extension* extension = GetExtension();
 394   if (!extension)
 395     return false;
 396
 397   // Here, we can handle a key event before the content gets it. When we are
 398   // fullscreen and it is not forced, we want to allow the user to leave
 399   // when ESC is pressed.
 400   // However, if the application has the "overrideEscFullscreen" permission, we
 401   // should let it override that behavior.
 402   // ::HandleKeyboardEvent() will only be called if the KeyEvent's default
 403   // action is not prevented.
 404   // Thus, we should handle the KeyEvent here only if the permission is not set.
 405   if (event.windowsKeyCode == ui::VKEY_ESCAPE && IsFullscreen() &&
 406       !IsForcedFullscreen() &&
 407       !extension->permissions_data()->HasAPIPermission(
 408           APIPermission::kOverrideEscFullscreen)) {
 409     Restore();
 410     return true;
 411   }
 412
 413   return false;
 414 }
 415
 416 void AppWindow::HandleKeyboardEvent(
 417     WebContents* source,
 418     const content::NativeWebKeyboardEvent& event) {
 419   // If the window is currently fullscreen and not forced, ESC should leave
 420   // fullscreen.  If this code is being called for ESC, that means that the
 421   // KeyEvent's default behavior was not prevented by the content.
 422   if (event.windowsKeyCode == ui::VKEY_ESCAPE && IsFullscreen() &&
 423       !IsForcedFullscreen()) {
 424     Restore();
 425     return;
 426   }
 427
 428   native_app_window_->HandleKeyboardEvent(event);
 429 }
 430
 431 void AppWindow::RequestToLockMouse(WebContents* web_contents,
 432                                    bool user_gesture,
 433                                    bool last_unlocked_by_target) {
 434   DCHECK_EQ(AppWindow::web_contents(), web_contents);
 435   helper_->RequestToLockMouse();
 436 }
 437
 438 bool AppWindow::PreHandleGestureEvent(WebContents* source,
 439                                       const blink::WebGestureEvent& event) {
 440   return AppWebContentsHelper::ShouldSuppressGestureEvent(event);
 441 }
 442
 443 void AppWindow::DidFirstVisuallyNonEmptyPaint() {
 444   first_paint_complete_ = true;
 445   if (show_on_first_paint_) {
 446     DCHECK(delayed_show_type_ == SHOW_ACTIVE ||
 447            delayed_show_type_ == SHOW_INACTIVE);
 448     Show(delayed_show_type_);
 449   }
 450 }
 451
 452 void AppWindow::OnNativeClose() {
 453   AppWindowRegistry::Get(browser_context_)->RemoveAppWindow(this);
 454   if (app_window_contents_) {
 455     WebContents* web_contents = app_window_contents_->GetWebContents();
 456     WebContentsModalDialogManager::FromWebContents(web_contents)
 457         ->SetDelegate(NULL);
 458     app_window_contents_->NativeWindowClosed();
 459   }
 460   delete this;
 461 }
 462
 463 void AppWindow::OnNativeWindowChanged() {
 464   SaveWindowPosition();
 465
 466 #if defined(OS_WIN)
 467   if (native_app_window_ && cached_always_on_top_ && !IsFullscreen() &&
 468       !native_app_window_->IsMaximized() &&
 469       !native_app_window_->IsMinimized()) {
 470     UpdateNativeAlwaysOnTop();
 471   }
 472 #endif
 473
 474   if (app_window_contents_ && native_app_window_)
 475     app_window_contents_->NativeWindowChanged(native_app_window_.get());
 476 }
 477
 478 void AppWindow::OnNativeWindowActivated() {
 479   AppWindowRegistry::Get(browser_context_)->AppWindowActivated(this);
 480 }
 481
 482 content::WebContents* AppWindow::web_contents() const {
 483   return app_window_contents_->GetWebContents();
 484 }
 485
 486 const Extension* AppWindow::GetExtension() const {
 487   return ExtensionRegistry::Get(browser_context_)
 488       ->enabled_extensions()
 489       .GetByID(extension_id_);
 490 }
 491
 492 NativeAppWindow* AppWindow::GetBaseWindow() { return native_app_window_.get(); }
 493
 494 gfx::NativeWindow AppWindow::GetNativeWindow() {
 495   return GetBaseWindow()->GetNativeWindow();
 496 }
 497
 498 gfx::Rect AppWindow::GetClientBounds() const {
 499   gfx::Rect bounds = native_app_window_->GetBounds();
 500   bounds.Inset(native_app_window_->GetFrameInsets());
 501   return bounds;
 502 }
 503
 504 base::string16 AppWindow::GetTitle() const {
 505   const Extension* extension = GetExtension();
 506   if (!extension)
 507     return base::string16();
 508
 509   // WebContents::GetTitle() will return the page's URL if there's no <title>
 510   // specified. However, we'd prefer to show the name of the extension in that
 511   // case, so we directly inspect the NavigationEntry's title.
 512   base::string16 title;
 513   if (!web_contents() || !web_contents()->GetController().GetActiveEntry() ||
 514       web_contents()->GetController().GetActiveEntry()->GetTitle().empty()) {
 515     title = base::UTF8ToUTF16(extension->name());
 516   } else {
 517     title = web_contents()->GetTitle();
 518   }
 519   base::RemoveChars(title, base::ASCIIToUTF16("\n"), &title);
 520   return title;
 521 }
 522
 523 void AppWindow::SetAppIconUrl(const GURL& url) {
 524   // If the same url is being used for the badge, ignore it.
 525   if (url == badge_icon_url_)
 526     return;
 527
 528   // Avoid using any previous icons that were being downloaded.
 529   image_loader_ptr_factory_.InvalidateWeakPtrs();
 530
 531   // Reset |app_icon_image_| to abort pending image load (if any).
 532   app_icon_image_.reset();
 533
 534   app_icon_url_ = url;
 535   web_contents()->DownloadImage(
 536       url,
 537       true,  // is a favicon
 538       0,     // no maximum size
 539       base::Bind(&AppWindow::DidDownloadFavicon,
 540                  image_loader_ptr_factory_.GetWeakPtr()));
 541 }
 542
 543 void AppWindow::SetBadgeIconUrl(const GURL& url) {
 544   // Avoid using any previous icons that were being downloaded.
 545   image_loader_ptr_factory_.InvalidateWeakPtrs();
 546
 547   // Reset |app_icon_image_| to abort pending image load (if any).
 548   badge_icon_image_.reset();
 549
 550   badge_icon_url_ = url;
 551   web_contents()->DownloadImage(
 552       url,
 553       true,  // is a favicon
 554       0,     // no maximum size
 555       base::Bind(&AppWindow::DidDownloadFavicon,
 556                  image_loader_ptr_factory_.GetWeakPtr()));
 557 }
 558
 559 void AppWindow::ClearBadge() {
 560   badge_icon_image_.reset();
 561   badge_icon_url_ = GURL();
 562   UpdateBadgeIcon(gfx::Image());
 563 }
 564
 565 void AppWindow::UpdateShape(scoped_ptr<SkRegion> region) {
 566   native_app_window_->UpdateShape(region.Pass());
 567 }
 568
 569 void AppWindow::UpdateDraggableRegions(
 570     const std::vector<DraggableRegion>& regions) {
 571   native_app_window_->UpdateDraggableRegions(regions);
 572 }
 573
 574 void AppWindow::UpdateAppIcon(const gfx::Image& image) {
 575   if (image.IsEmpty())
 576     return;
 577   app_icon_ = image;
 578   native_app_window_->UpdateWindowIcon();
 579   AppWindowRegistry::Get(browser_context_)->AppWindowIconChanged(this);
 580 }
 581
 582 void AppWindow::SetFullscreen(FullscreenType type, bool enable) {
 583   DCHECK_NE(FULLSCREEN_TYPE_NONE, type);
 584
 585   if (enable) {
 586 #if !defined(OS_MACOSX)
 587     // Do not enter fullscreen mode if disallowed by pref.
 588     // TODO(bartfab): Add a test once it becomes possible to simulate a user
 589     // gesture. http://crbug.com/174178
 590     if (type != FULLSCREEN_TYPE_FORCED) {
 591       PrefService* prefs =
 592           ExtensionsBrowserClient::Get()->GetPrefServiceForContext(
 593               browser_context());
 594       if (!prefs->GetBoolean(pref_names::kAppFullscreenAllowed))
 595         return;
 596     }
 597 #endif
 598     fullscreen_types_ |= type;
 599   } else {
 600     fullscreen_types_ &= ~type;
 601   }
 602   SetNativeWindowFullscreen();
 603 }
 604
 605 bool AppWindow::IsFullscreen() const {
 606   return fullscreen_types_ != FULLSCREEN_TYPE_NONE;
 607 }
 608
 609 bool AppWindow::IsForcedFullscreen() const {
 610   return (fullscreen_types_ & FULLSCREEN_TYPE_FORCED) != 0;
 611 }
 612
 613 bool AppWindow::IsHtmlApiFullscreen() const {
 614   return (fullscreen_types_ & FULLSCREEN_TYPE_HTML_API) != 0;
 615 }
 616
 617 void AppWindow::Fullscreen() {
 618   SetFullscreen(FULLSCREEN_TYPE_WINDOW_API, true);
 619 }
 620
 621 void AppWindow::Maximize() { GetBaseWindow()->Maximize(); }
 622
 623 void AppWindow::Minimize() { GetBaseWindow()->Minimize(); }
 624
 625 void AppWindow::Restore() {
 626   if (IsFullscreen()) {
 627     fullscreen_types_ = FULLSCREEN_TYPE_NONE;
 628     SetNativeWindowFullscreen();
 629   } else {
 630     GetBaseWindow()->Restore();
 631   }
 632 }
 633
 634 void AppWindow::OSFullscreen() {
 635   SetFullscreen(FULLSCREEN_TYPE_OS, true);
 636 }
 637
 638 void AppWindow::ForcedFullscreen() {
 639   SetFullscreen(FULLSCREEN_TYPE_FORCED, true);
 640 }
 641
 642 void AppWindow::SetContentSizeConstraints(const gfx::Size& min_size,
 643                                           const gfx::Size& max_size) {
 644   SizeConstraints constraints(min_size, max_size);
 645   native_app_window_->SetContentSizeConstraints(constraints.GetMinimumSize(),
 646                                                 constraints.GetMaximumSize());
 647
 648   gfx::Rect bounds = GetClientBounds();
 649   gfx::Size constrained_size = constraints.ClampSize(bounds.size());
 650   if (bounds.size() != constrained_size) {
 651     bounds.set_size(constrained_size);
 652     bounds.Inset(-native_app_window_->GetFrameInsets());
 653     native_app_window_->SetBounds(bounds);
 654   }
 655   OnNativeWindowChanged();
 656 }
 657
 658 void AppWindow::Show(ShowType show_type) {
 659   is_hidden_ = false;
 660
 661   if (CommandLine::ForCurrentProcess()->HasSwitch(
 662           switches::kEnableAppsShowOnFirstPaint)) {
 663     show_on_first_paint_ = true;
 664
 665     if (!first_paint_complete_) {
 666       delayed_show_type_ = show_type;
 667       return;
 668     }
 669   }
 670
 671   switch (show_type) {
 672     case SHOW_ACTIVE:
 673       GetBaseWindow()->Show();
 674       break;
 675     case SHOW_INACTIVE:
 676       GetBaseWindow()->ShowInactive();
 677       break;
 678   }
 679   AppWindowRegistry::Get(browser_context_)->AppWindowShown(this);
 680
 681   has_been_shown_ = true;
 682   SendOnWindowShownIfShown();
 683 }
 684
 685 void AppWindow::Hide() {
 686   // This is there to prevent race conditions with Hide() being called before
 687   // there was a non-empty paint. It should have no effect in a non-racy
 688   // scenario where the application is hiding then showing a window: the second
 689   // show will not be delayed.
 690   is_hidden_ = true;
 691   show_on_first_paint_ = false;
 692   GetBaseWindow()->Hide();
 693   AppWindowRegistry::Get(browser_context_)->AppWindowHidden(this);
 694 }
 695
 696 void AppWindow::SetAlwaysOnTop(bool always_on_top) {
 697   if (cached_always_on_top_ == always_on_top)
 698     return;
 699
 700   cached_always_on_top_ = always_on_top;
 701
 702   // As a security measure, do not allow fullscreen windows or windows that
 703   // overlap the taskbar to be on top. The property will be applied when the
 704   // window exits fullscreen and moves away from the taskbar.
 705   if (!IsFullscreen() && !IntersectsWithTaskbar())
 706     native_app_window_->SetAlwaysOnTop(always_on_top);
 707
 708   OnNativeWindowChanged();
 709 }
 710
 711 bool AppWindow::IsAlwaysOnTop() const { return cached_always_on_top_; }
 712
 713 void AppWindow::WindowEventsReady() {
 714   can_send_events_ = true;
 715   SendOnWindowShownIfShown();
 716 }
 717
 718 void AppWindow::GetSerializedState(base::DictionaryValue* properties) const {
 719   DCHECK(properties);
 720
 721   properties->SetBoolean("fullscreen",
 722                          native_app_window_->IsFullscreenOrPending());
 723   properties->SetBoolean("minimized", native_app_window_->IsMinimized());
 724   properties->SetBoolean("maximized", native_app_window_->IsMaximized());
 725   properties->SetBoolean("alwaysOnTop", IsAlwaysOnTop());
 726   properties->SetBoolean("hasFrameColor", native_app_window_->HasFrameColor());
 727   properties->SetBoolean(
 728       "alphaEnabled",
 729       requested_alpha_enabled_ && native_app_window_->CanHaveAlphaEnabled());
 730
 731   // These properties are undocumented and are to enable testing. Alpha is
 732   // removed to
 733   // make the values easier to check.
 734   SkColor transparent_white = ~SK_ColorBLACK;
 735   properties->SetInteger(
 736       "activeFrameColor",
 737       native_app_window_->ActiveFrameColor() & transparent_white);
 738   properties->SetInteger(
 739       "inactiveFrameColor",
 740       native_app_window_->InactiveFrameColor() & transparent_white);
 741
 742   gfx::Rect content_bounds = GetClientBounds();
 743   gfx::Size content_min_size = native_app_window_->GetContentMinimumSize();
 744   gfx::Size content_max_size = native_app_window_->GetContentMaximumSize();
 745   SetBoundsProperties(content_bounds,
 746                       content_min_size,
 747                       content_max_size,
 748                       "innerBounds",
 749                       properties);
 750
 751   gfx::Insets frame_insets = native_app_window_->GetFrameInsets();
 752   gfx::Rect frame_bounds = native_app_window_->GetBounds();
 753   gfx::Size frame_min_size = SizeConstraints::AddFrameToConstraints(
 754       content_min_size, frame_insets);
 755   gfx::Size frame_max_size = SizeConstraints::AddFrameToConstraints(
 756       content_max_size, frame_insets);
 757   SetBoundsProperties(frame_bounds,
 758                       frame_min_size,
 759                       frame_max_size,
 760                       "outerBounds",
 761                       properties);
 762 }
 763
 764 //------------------------------------------------------------------------------
 765 // Private methods
 766
 767 void AppWindow::UpdateBadgeIcon(const gfx::Image& image) {
 768   badge_icon_ = image;
 769   native_app_window_->UpdateBadgeIcon();
 770 }
 771
 772 void AppWindow::DidDownloadFavicon(
 773     int id,
 774     int http_status_code,
 775     const GURL& image_url,
 776     const std::vector<SkBitmap>& bitmaps,
 777     const std::vector<gfx::Size>& original_bitmap_sizes) {
 778   if ((image_url != app_icon_url_ && image_url != badge_icon_url_) ||
 779       bitmaps.empty()) {
 780     return;
 781   }
 782
 783   // Bitmaps are ordered largest to smallest. Choose the smallest bitmap
 784   // whose height >= the preferred size.
 785   int largest_index = 0;
 786   for (size_t i = 1; i < bitmaps.size(); ++i) {
 787     if (bitmaps[i].height() < app_delegate_->PreferredIconSize())
 788       break;
 789     largest_index = i;
 790   }
 791   const SkBitmap& largest = bitmaps[largest_index];
 792   if (image_url == app_icon_url_) {
 793     UpdateAppIcon(gfx::Image::CreateFrom1xBitmap(largest));
 794     return;
 795   }
 796
 797   UpdateBadgeIcon(gfx::Image::CreateFrom1xBitmap(largest));
 798 }
 799
 800 void AppWindow::OnExtensionIconImageChanged(IconImage* image) {
 801   DCHECK_EQ(app_icon_image_.get(), image);
 802
 803   UpdateAppIcon(gfx::Image(app_icon_image_->image_skia()));
 804 }
 805
 806 void AppWindow::UpdateExtensionAppIcon() {
 807   // Avoid using any previous app icons were being downloaded.
 808   image_loader_ptr_factory_.InvalidateWeakPtrs();
 809
 810   const Extension* extension = GetExtension();
 811   if (!extension)
 812     return;
 813
 814   gfx::ImageSkia app_default_icon =
 815       *ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
 816           IDR_APP_DEFAULT_ICON);
 817
 818   app_icon_image_.reset(new IconImage(browser_context(),
 819                                       extension,
 820                                       IconsInfo::GetIcons(extension),
 821                                       app_delegate_->PreferredIconSize(),
 822                                       app_default_icon,
 823                                       this));
 824
 825   // Triggers actual image loading with 1x resources. The 2x resource will
 826   // be handled by IconImage class when requested.
 827   app_icon_image_->image_skia().GetRepresentation(1.0f);
 828 }
 829
 830 void AppWindow::SetNativeWindowFullscreen() {
 831   native_app_window_->SetFullscreen(fullscreen_types_);
 832
 833   if (cached_always_on_top_)
 834     UpdateNativeAlwaysOnTop();
 835 }
 836
 837 bool AppWindow::IntersectsWithTaskbar() const {
 838 #if defined(OS_WIN)
 839   gfx::Screen* screen = gfx::Screen::GetNativeScreen();
 840   gfx::Rect window_bounds = native_app_window_->GetRestoredBounds();
 841   std::vector<gfx::Display> displays = screen->GetAllDisplays();
 842
 843   for (std::vector<gfx::Display>::const_iterator it = displays.begin();
 844        it != displays.end();
 845        ++it) {
 846     gfx::Rect taskbar_bounds = it->bounds();
 847     taskbar_bounds.Subtract(it->work_area());
 848     if (taskbar_bounds.IsEmpty())
 849       continue;
 850
 851     if (window_bounds.Intersects(taskbar_bounds))
 852       return true;
 853   }
 854 #endif
 855
 856   return false;
 857 }
 858
 859 void AppWindow::UpdateNativeAlwaysOnTop() {
 860   DCHECK(cached_always_on_top_);
 861   bool is_on_top = native_app_window_->IsAlwaysOnTop();
 862   bool fullscreen = IsFullscreen();
 863   bool intersects_taskbar = IntersectsWithTaskbar();
 864
 865   if (is_on_top && (fullscreen || intersects_taskbar)) {
 866     // When entering fullscreen or overlapping the taskbar, ensure windows are
 867     // not always-on-top.
 868     native_app_window_->SetAlwaysOnTop(false);
 869   } else if (!is_on_top && !fullscreen && !intersects_taskbar) {
 870     // When exiting fullscreen and moving away from the taskbar, reinstate
 871     // always-on-top.
 872     native_app_window_->SetAlwaysOnTop(true);
 873   }
 874 }
 875
 876 void AppWindow::SendOnWindowShownIfShown() {
 877   if (!can_send_events_ || !has_been_shown_)
 878     return;
 879
 880   if (CommandLine::ForCurrentProcess()->HasSwitch(::switches::kTestType)) {
 881     app_window_contents_->DispatchWindowShownForTests();
 882   }
 883 }
 884
 885 void AppWindow::CloseContents(WebContents* contents) {
 886   native_app_window_->Close();
 887 }
 888
 889 bool AppWindow::ShouldSuppressDialogs() { return true; }
 890
 891 content::ColorChooser* AppWindow::OpenColorChooser(
 892     WebContents* web_contents,
 893     SkColor initial_color,
 894     const std::vector<content::ColorSuggestion>& suggestions) {
 895   return app_delegate_->ShowColorChooser(web_contents, initial_color);
 896 }
 897
 898 void AppWindow::RunFileChooser(WebContents* tab,
 899                                const content::FileChooserParams& params) {
 900   if (window_type_is_panel()) {
 901     // Panels can't host a file dialog, abort. TODO(stevenjb): allow file
 902     // dialogs to be unhosted but still close with the owning web contents.
 903     // crbug.com/172502.
 904     LOG(WARNING) << "File dialog opened by panel.";
 905     return;
 906   }
 907
 908   app_delegate_->RunFileChooser(tab, params);
 909 }
 910
 911 bool AppWindow::IsPopupOrPanel(const WebContents* source) const { return true; }
 912
 913 void AppWindow::MoveContents(WebContents* source, const gfx::Rect& pos) {
 914   native_app_window_->SetBounds(pos);
 915 }
 916
 917 void AppWindow::NavigationStateChanged(const content::WebContents* source,
 918                                        content::InvalidateTypes changed_flags) {
 919   if (changed_flags & content::INVALIDATE_TYPE_TITLE)
 920     native_app_window_->UpdateWindowTitle();
 921   else if (changed_flags & content::INVALIDATE_TYPE_TAB)
 922     native_app_window_->UpdateWindowIcon();
 923 }
 924
 925 void AppWindow::ToggleFullscreenModeForTab(content::WebContents* source,
 926                                            bool enter_fullscreen) {
 927   const Extension* extension = GetExtension();
 928   if (!extension)
 929     return;
 930
 931   if (!IsExtensionWithPermissionOrSuggestInConsole(
 932           APIPermission::kFullscreen, extension, source->GetRenderViewHost())) {
 933     return;
 934   }
 935
 936   SetFullscreen(FULLSCREEN_TYPE_HTML_API, enter_fullscreen);
 937 }
 938
 939 bool AppWindow::IsFullscreenForTabOrPending(const content::WebContents* source)
 940     const {
 941   return IsHtmlApiFullscreen();
 942 }
 943
 944 void AppWindow::Observe(int type,
 945                         const content::NotificationSource& source,
 946                         const content::NotificationDetails& details) {
 947   switch (type) {
 948     case NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED: {
 949       const Extension* unloaded_extension =
 950           content::Details<UnloadedExtensionInfo>(details)->extension;
 951       if (extension_id_ == unloaded_extension->id())
 952         native_app_window_->Close();
 953       break;
 954     }
 955     case NOTIFICATION_EXTENSION_WILL_BE_INSTALLED_DEPRECATED: {
 956       const Extension* installed_extension =
 957           content::Details<const InstalledExtensionInfo>(details)->extension;
 958       DCHECK(installed_extension);
 959       if (installed_extension->id() == extension_id())
 960         native_app_window_->UpdateShelfMenu();
 961       break;
 962     }
 963     default:
 964       NOTREACHED() << "Received unexpected notification";
 965   }
 966 }
 967
 968 void AppWindow::SetWebContentsBlocked(content::WebContents* web_contents,
 969                                       bool blocked) {
 970   app_delegate_->SetWebContentsBlocked(web_contents, blocked);
 971 }
 972
 973 bool AppWindow::IsWebContentsVisible(content::WebContents* web_contents) {
 974   return app_delegate_->IsWebContentsVisible(web_contents);
 975 }
 976
 977 WebContentsModalDialogHost* AppWindow::GetWebContentsModalDialogHost() {
 978   return native_app_window_.get();
 979 }
 980
 981 void AppWindow::SaveWindowPosition() {
 982   if (window_key_.empty())
 983     return;
 984   if (!native_app_window_)
 985     return;
 986
 987   AppWindowGeometryCache* cache =
 988       AppWindowGeometryCache::Get(browser_context());
 989
 990   gfx::Rect bounds = native_app_window_->GetRestoredBounds();
 991   gfx::Rect screen_bounds =
 992       gfx::Screen::GetNativeScreen()->GetDisplayMatching(bounds).work_area();
 993   ui::WindowShowState window_state = native_app_window_->GetRestoredState();
 994   cache->SaveGeometry(
 995       extension_id(), window_key_, bounds, screen_bounds, window_state);
 996 }
 997
 998 void AppWindow::AdjustBoundsToBeVisibleOnScreen(
 999     const gfx::Rect& cached_bounds,
1000     const gfx::Rect& cached_screen_bounds,
1001     const gfx::Rect& current_screen_bounds,
1002     const gfx::Size& minimum_size,
1003     gfx::Rect* bounds) const {
1004   *bounds = cached_bounds;
1005
1006   // Reposition and resize the bounds if the cached_screen_bounds is different
1007   // from the current screen bounds and the current screen bounds doesn't
1008   // completely contain the bounds.
1009   if (cached_screen_bounds != current_screen_bounds &&
1010       !current_screen_bounds.Contains(cached_bounds)) {
1011     bounds->set_width(
1012         std::max(minimum_size.width(),
1013                  std::min(bounds->width(), current_screen_bounds.width())));
1014     bounds->set_height(
1015         std::max(minimum_size.height(),
1016                  std::min(bounds->height(), current_screen_bounds.height())));
1017     bounds->set_x(
1018         std::max(current_screen_bounds.x(),
1019                  std::min(bounds->x(),
1020                           current_screen_bounds.right() - bounds->width())));
1021     bounds->set_y(
1022         std::max(current_screen_bounds.y(),
1023                  std::min(bounds->y(),
1024                           current_screen_bounds.bottom() - bounds->height())));
1025   }
1026 }
1027
1028 AppWindow::CreateParams AppWindow::LoadDefaults(CreateParams params)
1029     const {
1030   // Ensure width and height are specified.
1031   if (params.content_spec.bounds.width() == 0 &&
1032       params.window_spec.bounds.width() == 0) {
1033     params.content_spec.bounds.set_width(kDefaultWidth);
1034   }
1035   if (params.content_spec.bounds.height() == 0 &&
1036       params.window_spec.bounds.height() == 0) {
1037     params.content_spec.bounds.set_height(kDefaultHeight);
1038   }
1039
1040   // If left and top are left undefined, the native app window will center
1041   // the window on the main screen in a platform-defined manner.
1042
1043   // Load cached state if it exists.
1044   if (!params.window_key.empty()) {
1045     AppWindowGeometryCache* cache =
1046         AppWindowGeometryCache::Get(browser_context());
1047
1048     gfx::Rect cached_bounds;
1049     gfx::Rect cached_screen_bounds;
1050     ui::WindowShowState cached_state = ui::SHOW_STATE_DEFAULT;
1051     if (cache->GetGeometry(extension_id(),
1052                            params.window_key,
1053                            &cached_bounds,
1054                            &cached_screen_bounds,
1055                            &cached_state)) {
1056       // App window has cached screen bounds, make sure it fits on screen in
1057       // case the screen resolution changed.
1058       gfx::Screen* screen = gfx::Screen::GetNativeScreen();
1059       gfx::Display display = screen->GetDisplayMatching(cached_bounds);
1060       gfx::Rect current_screen_bounds = display.work_area();
1061       SizeConstraints constraints(params.GetWindowMinimumSize(gfx::Insets()),
1062                                   params.GetWindowMaximumSize(gfx::Insets()));
1063       AdjustBoundsToBeVisibleOnScreen(cached_bounds,
1064                                       cached_screen_bounds,
1065                                       current_screen_bounds,
1066                                       constraints.GetMinimumSize(),
1067                                       &params.window_spec.bounds);
1068       params.state = cached_state;
1069
1070       // Since we are restoring a cached state, reset the content bounds spec to
1071       // ensure it is not used.
1072       params.content_spec.ResetBounds();
1073     }
1074   }
1075
1076   return params;
1077 }
1078
1079 // static
1080 SkRegion* AppWindow::RawDraggableRegionsToSkRegion(
1081     const std::vector<DraggableRegion>& regions) {
1082   SkRegion* sk_region = new SkRegion;
1083   for (std::vector<DraggableRegion>::const_iterator iter = regions.begin();
1084        iter != regions.end();
1085        ++iter) {
1086     const DraggableRegion& region = *iter;
1087     sk_region->op(
1088         region.bounds.x(),
1089         region.bounds.y(),
1090         region.bounds.right(),
1091         region.bounds.bottom(),
1092         region.draggable ? SkRegion::kUnion_Op : SkRegion::kDifference_Op);
1093   }
1094   return sk_region;
1095 }
1096
1097 }  // namespace extensions