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/render_view_host.h"
  20 #include "content/public/browser/resource_dispatcher_host.h"
  21 #include "content/public/browser/web_contents.h"
  22 #include "content/public/common/content_switches.h"
  23 #include "content/public/common/media_stream_request.h"
  24 #include "extensions/browser/app_window/app_delegate.h"
  25 #include "extensions/browser/app_window/app_web_contents_helper.h"
  26 #include "extensions/browser/app_window/app_window_client.h"
  27 #include "extensions/browser/app_window/app_window_geometry_cache.h"
  28 #include "extensions/browser/app_window/app_window_registry.h"
  29 #include "extensions/browser/app_window/native_app_window.h"
  30 #include "extensions/browser/app_window/size_constraints.h"
  31 #include "extensions/browser/extension_registry.h"
  32 #include "extensions/browser/extension_system.h"
  33 #include "extensions/browser/extensions_browser_client.h"
  34 #include "extensions/browser/notification_types.h"
  35 #include "extensions/browser/process_manager.h"
  36 #include "extensions/browser/suggest_permission_util.h"
  37 #include "extensions/browser/view_type_utils.h"
  38 #include "extensions/common/draggable_region.h"
  39 #include "extensions/common/extension.h"
  40 #include "extensions/common/manifest_handlers/icons_handler.h"
  41 #include "extensions/common/permissions/permissions_data.h"
  42 #include "extensions/common/switches.h"
  43 #include "extensions/grit/extensions_browser_resources.h"
  44 #include "third_party/skia/include/core/SkRegion.h"
  45 #include "ui/base/resource/resource_bundle.h"
  46 #include "ui/gfx/screen.h"
  47
  48 #if !defined(OS_MACOSX)
  49 #include "base/prefs/pref_service.h"
  50 #include "extensions/browser/pref_names.h"
  51 #endif
  52
  53 using content::BrowserContext;
  54 using content::ConsoleMessageLevel;
  55 using content::WebContents;
  56 using web_modal::WebContentsModalDialogHost;
  57 using web_modal::WebContentsModalDialogManager;
  58
  59 namespace extensions {
  60
  61 namespace {
  62
  63 const int kDefaultWidth = 512;
  64 const int kDefaultHeight = 384;
  65
  66 void SetConstraintProperty(const std::string& name,
  67                            int value,
  68                            base::DictionaryValue* bounds_properties) {
  69   if (value != SizeConstraints::kUnboundedSize)
  70     bounds_properties->SetInteger(name, value);
  71   else
  72     bounds_properties->Set(name, base::Value::CreateNullValue());
  73 }
  74
  75 void SetBoundsProperties(const gfx::Rect& bounds,
  76                          const gfx::Size& min_size,
  77                          const gfx::Size& max_size,
  78                          const std::string& bounds_name,
  79                          base::DictionaryValue* window_properties) {
  80   scoped_ptr<base::DictionaryValue> bounds_properties(
  81       new base::DictionaryValue());
  82
  83   bounds_properties->SetInteger("left", bounds.x());
  84   bounds_properties->SetInteger("top", bounds.y());
  85   bounds_properties->SetInteger("width", bounds.width());
  86   bounds_properties->SetInteger("height", bounds.height());
  87
  88   SetConstraintProperty("minWidth", min_size.width(), bounds_properties.get());
  89   SetConstraintProperty(
  90       "minHeight", min_size.height(), bounds_properties.get());
  91   SetConstraintProperty("maxWidth", max_size.width(), bounds_properties.get());
  92   SetConstraintProperty(
  93       "maxHeight", max_size.height(), bounds_properties.get());
  94
  95   window_properties->Set(bounds_name, bounds_properties.release());
  96 }
  97
  98 // Combines the constraints of the content and window, and returns constraints
  99 // for the window.
 100 gfx::Size GetCombinedWindowConstraints(const gfx::Size& window_constraints,
 101                                        const gfx::Size& content_constraints,
 102                                        const gfx::Insets& frame_insets) {
 103   gfx::Size combined_constraints(window_constraints);
 104   if (content_constraints.width() > 0) {
 105     combined_constraints.set_width(
 106         content_constraints.width() + frame_insets.width());
 107   }
 108   if (content_constraints.height() > 0) {
 109     combined_constraints.set_height(
 110         content_constraints.height() + frame_insets.height());
 111   }
 112   return combined_constraints;
 113 }
 114
 115 // Combines the constraints of the content and window, and returns constraints
 116 // for the content.
 117 gfx::Size GetCombinedContentConstraints(const gfx::Size& window_constraints,
 118                                         const gfx::Size& content_constraints,
 119                                         const gfx::Insets& frame_insets) {
 120   gfx::Size combined_constraints(content_constraints);
 121   if (window_constraints.width() > 0) {
 122     combined_constraints.set_width(
 123         std::max(0, window_constraints.width() - frame_insets.width()));
 124   }
 125   if (window_constraints.height() > 0) {
 126     combined_constraints.set_height(
 127         std::max(0, window_constraints.height() - frame_insets.height()));
 128   }
 129   return combined_constraints;
 130 }
 131
 132 }  // namespace
 133
 134 // AppWindow::BoundsSpecification
 135
 136 const int AppWindow::BoundsSpecification::kUnspecifiedPosition = INT_MIN;
 137
 138 AppWindow::BoundsSpecification::BoundsSpecification()
 139     : bounds(kUnspecifiedPosition, kUnspecifiedPosition, 0, 0) {}
 140
 141 AppWindow::BoundsSpecification::~BoundsSpecification() {}
 142
 143 void AppWindow::BoundsSpecification::ResetBounds() {
 144   bounds.SetRect(kUnspecifiedPosition, kUnspecifiedPosition, 0, 0);
 145 }
 146
 147 // AppWindow::CreateParams
 148
 149 AppWindow::CreateParams::CreateParams()
 150     : window_type(AppWindow::WINDOW_TYPE_DEFAULT),
 151       frame(AppWindow::FRAME_CHROME),
 152       has_frame_color(false),
 153       active_frame_color(SK_ColorBLACK),
 154       inactive_frame_color(SK_ColorBLACK),
 155       alpha_enabled(false),
 156       is_ime_window(false),
 157       creator_process_id(0),
 158       state(ui::SHOW_STATE_DEFAULT),
 159       hidden(false),
 160       resizable(true),
 161       focused(true),
 162       always_on_top(false),
 163       visible_on_all_workspaces(false) {
 164 }
 165
 166 AppWindow::CreateParams::~CreateParams() {}
 167
 168 gfx::Rect AppWindow::CreateParams::GetInitialWindowBounds(
 169     const gfx::Insets& frame_insets) const {
 170   // Combine into a single window bounds.
 171   gfx::Rect combined_bounds(window_spec.bounds);
 172   if (content_spec.bounds.x() != BoundsSpecification::kUnspecifiedPosition)
 173     combined_bounds.set_x(content_spec.bounds.x() - frame_insets.left());
 174   if (content_spec.bounds.y() != BoundsSpecification::kUnspecifiedPosition)
 175     combined_bounds.set_y(content_spec.bounds.y() - frame_insets.top());
 176   if (content_spec.bounds.width() > 0) {
 177     combined_bounds.set_width(
 178         content_spec.bounds.width() + frame_insets.width());
 179   }
 180   if (content_spec.bounds.height() > 0) {
 181     combined_bounds.set_height(
 182         content_spec.bounds.height() + frame_insets.height());
 183   }
 184
 185   // Constrain the bounds.
 186   SizeConstraints constraints(
 187       GetCombinedWindowConstraints(
 188           window_spec.minimum_size, content_spec.minimum_size, frame_insets),
 189       GetCombinedWindowConstraints(
 190           window_spec.maximum_size, content_spec.maximum_size, frame_insets));
 191   combined_bounds.set_size(constraints.ClampSize(combined_bounds.size()));
 192
 193   return combined_bounds;
 194 }
 195
 196 gfx::Size AppWindow::CreateParams::GetContentMinimumSize(
 197     const gfx::Insets& frame_insets) const {
 198   return GetCombinedContentConstraints(window_spec.minimum_size,
 199                                        content_spec.minimum_size,
 200                                        frame_insets);
 201 }
 202
 203 gfx::Size AppWindow::CreateParams::GetContentMaximumSize(
 204     const gfx::Insets& frame_insets) const {
 205   return GetCombinedContentConstraints(window_spec.maximum_size,
 206                                        content_spec.maximum_size,
 207                                        frame_insets);
 208 }
 209
 210 gfx::Size AppWindow::CreateParams::GetWindowMinimumSize(
 211     const gfx::Insets& frame_insets) const {
 212   return GetCombinedWindowConstraints(window_spec.minimum_size,
 213                                       content_spec.minimum_size,
 214                                       frame_insets);
 215 }
 216
 217 gfx::Size AppWindow::CreateParams::GetWindowMaximumSize(
 218     const gfx::Insets& frame_insets) const {
 219   return GetCombinedWindowConstraints(window_spec.maximum_size,
 220                                       content_spec.maximum_size,
 221                                       frame_insets);
 222 }
 223
 224 // AppWindow
 225
 226 AppWindow::AppWindow(BrowserContext* context,
 227                      AppDelegate* app_delegate,
 228                      const Extension* extension)
 229     : browser_context_(context),
 230       extension_id_(extension->id()),
 231       window_type_(WINDOW_TYPE_DEFAULT),
 232       app_delegate_(app_delegate),
 233       fullscreen_types_(FULLSCREEN_TYPE_NONE),
 234       show_on_first_paint_(false),
 235       first_paint_complete_(false),
 236       has_been_shown_(false),
 237       can_send_events_(false),
 238       is_hidden_(false),
 239       cached_always_on_top_(false),
 240       requested_alpha_enabled_(false),
 241       is_ime_window_(false),
 242       image_loader_ptr_factory_(this) {
 243   ExtensionsBrowserClient* client = ExtensionsBrowserClient::Get();
 244   CHECK(!client->IsGuestSession(context) || context->IsOffTheRecord())
 245       << "Only off the record window may be opened in the guest mode.";
 246 }
 247
 248 void AppWindow::Init(const GURL& url,
 249                      AppWindowContents* app_window_contents,
 250                      const CreateParams& params) {
 251   // Initialize the render interface and web contents
 252   app_window_contents_.reset(app_window_contents);
 253   app_window_contents_->Initialize(browser_context(), url);
 254
 255   content::WebContentsObserver::Observe(web_contents());
 256   SetViewType(web_contents(), VIEW_TYPE_APP_WINDOW);
 257   app_delegate_->InitWebContents(web_contents());
 258
 259   WebContentsModalDialogManager::CreateForWebContents(web_contents());
 260
 261   web_contents()->SetDelegate(this);
 262   WebContentsModalDialogManager::FromWebContents(web_contents())
 263       ->SetDelegate(this);
 264
 265   // Initialize the window
 266   CreateParams new_params = LoadDefaults(params);
 267   window_type_ = new_params.window_type;
 268   window_key_ = new_params.window_key;
 269
 270   // Windows cannot be always-on-top in fullscreen mode for security reasons.
 271   cached_always_on_top_ = new_params.always_on_top;
 272   if (new_params.state == ui::SHOW_STATE_FULLSCREEN)
 273     new_params.always_on_top = false;
 274
 275   requested_alpha_enabled_ = new_params.alpha_enabled;
 276
 277   is_ime_window_ = params.is_ime_window;
 278
 279   AppWindowClient* app_window_client = AppWindowClient::Get();
 280   native_app_window_.reset(
 281       app_window_client->CreateNativeAppWindow(this, &new_params));
 282
 283   helper_.reset(new AppWebContentsHelper(
 284       browser_context_, extension_id_, web_contents(), app_delegate_.get()));
 285
 286   popup_manager_.reset(
 287       new web_modal::PopupManager(GetWebContentsModalDialogHost()));
 288   popup_manager_->RegisterWith(web_contents());
 289
 290   UpdateExtensionAppIcon();
 291   AppWindowRegistry::Get(browser_context_)->AddAppWindow(this);
 292
 293   if (new_params.hidden) {
 294     // Although the window starts hidden by default, calling Hide() here
 295     // notifies observers of the window being hidden.
 296     Hide();
 297   } else {
 298     // Panels are not activated by default.
 299     Show(window_type_is_panel() || !new_params.focused ? SHOW_INACTIVE
 300                                                        : SHOW_ACTIVE);
 301
 302     // These states may cause the window to show, so they are ignored if the
 303     // window is initially hidden.
 304     if (new_params.state == ui::SHOW_STATE_FULLSCREEN)
 305       Fullscreen();
 306     else if (new_params.state == ui::SHOW_STATE_MAXIMIZED)
 307       Maximize();
 308     else if (new_params.state == ui::SHOW_STATE_MINIMIZED)
 309       Minimize();
 310   }
 311
 312   OnNativeWindowChanged();
 313
 314   ExtensionRegistry::Get(browser_context_)->AddObserver(this);
 315
 316   // Close when the browser process is exiting.
 317   app_delegate_->SetTerminatingCallback(
 318       base::Bind(&NativeAppWindow::Close,
 319                  base::Unretained(native_app_window_.get())));
 320
 321   app_window_contents_->LoadContents(new_params.creator_process_id);
 322
 323   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
 324           extensions::switches::kEnableAppsShowOnFirstPaint)) {
 325     // We want to show the window only when the content has been painted. For
 326     // that to happen, we need to define a size for the content, otherwise the
 327     // layout will happen in a 0x0 area.
 328     gfx::Insets frame_insets = native_app_window_->GetFrameInsets();
 329     gfx::Rect initial_bounds = new_params.GetInitialWindowBounds(frame_insets);
 330     initial_bounds.Inset(frame_insets);
 331     app_delegate_->ResizeWebContents(web_contents(), initial_bounds.size());
 332   }
 333 }
 334
 335 AppWindow::~AppWindow() {
 336   ExtensionRegistry::Get(browser_context_)->RemoveObserver(this);
 337 }
 338
 339 void AppWindow::RequestMediaAccessPermission(
 340     content::WebContents* web_contents,
 341     const content::MediaStreamRequest& request,
 342     const content::MediaResponseCallback& callback) {
 343   DCHECK_EQ(AppWindow::web_contents(), web_contents);
 344   helper_->RequestMediaAccessPermission(request, callback);
 345 }
 346
 347 bool AppWindow::CheckMediaAccessPermission(content::WebContents* web_contents,
 348                                            const GURL& security_origin,
 349                                            content::MediaStreamType type) {
 350   DCHECK_EQ(AppWindow::web_contents(), web_contents);
 351   return helper_->CheckMediaAccessPermission(security_origin, type);
 352 }
 353
 354 WebContents* AppWindow::OpenURLFromTab(WebContents* source,
 355                                        const content::OpenURLParams& params) {
 356   DCHECK_EQ(web_contents(), source);
 357   return helper_->OpenURLFromTab(params);
 358 }
 359
 360 void AppWindow::AddNewContents(WebContents* source,
 361                                WebContents* new_contents,
 362                                WindowOpenDisposition disposition,
 363                                const gfx::Rect& initial_rect,
 364                                bool user_gesture,
 365                                bool* was_blocked) {
 366   DCHECK(new_contents->GetBrowserContext() == browser_context_);
 367   app_delegate_->AddNewContents(browser_context_,
 368                                 new_contents,
 369                                 disposition,
 370                                 initial_rect,
 371                                 user_gesture,
 372                                 was_blocked);
 373 }
 374
 375 bool AppWindow::PreHandleKeyboardEvent(
 376     content::WebContents* source,
 377     const content::NativeWebKeyboardEvent& event,
 378     bool* is_keyboard_shortcut) {
 379   const Extension* extension = GetExtension();
 380   if (!extension)
 381     return false;
 382
 383   // Here, we can handle a key event before the content gets it. When we are
 384   // fullscreen and it is not forced, we want to allow the user to leave
 385   // when ESC is pressed.
 386   // However, if the application has the "overrideEscFullscreen" permission, we
 387   // should let it override that behavior.
 388   // ::HandleKeyboardEvent() will only be called if the KeyEvent's default
 389   // action is not prevented.
 390   // Thus, we should handle the KeyEvent here only if the permission is not set.
 391   if (event.windowsKeyCode == ui::VKEY_ESCAPE && IsFullscreen() &&
 392       !IsForcedFullscreen() &&
 393       !extension->permissions_data()->HasAPIPermission(
 394           APIPermission::kOverrideEscFullscreen)) {
 395     Restore();
 396     return true;
 397   }
 398
 399   return false;
 400 }
 401
 402 void AppWindow::HandleKeyboardEvent(
 403     WebContents* source,
 404     const content::NativeWebKeyboardEvent& event) {
 405   // If the window is currently fullscreen and not forced, ESC should leave
 406   // fullscreen.  If this code is being called for ESC, that means that the
 407   // KeyEvent's default behavior was not prevented by the content.
 408   if (event.windowsKeyCode == ui::VKEY_ESCAPE && IsFullscreen() &&
 409       !IsForcedFullscreen()) {
 410     Restore();
 411     return;
 412   }
 413
 414   native_app_window_->HandleKeyboardEvent(event);
 415 }
 416
 417 void AppWindow::RequestToLockMouse(WebContents* web_contents,
 418                                    bool user_gesture,
 419                                    bool last_unlocked_by_target) {
 420   DCHECK_EQ(AppWindow::web_contents(), web_contents);
 421   helper_->RequestToLockMouse();
 422 }
 423
 424 bool AppWindow::PreHandleGestureEvent(WebContents* source,
 425                                       const blink::WebGestureEvent& event) {
 426   return AppWebContentsHelper::ShouldSuppressGestureEvent(event);
 427 }
 428
 429 void AppWindow::RenderViewCreated(content::RenderViewHost* render_view_host) {
 430   app_delegate_->RenderViewCreated(render_view_host);
 431 }
 432
 433 void AppWindow::DidFirstVisuallyNonEmptyPaint() {
 434   first_paint_complete_ = true;
 435   if (show_on_first_paint_) {
 436     DCHECK(delayed_show_type_ == SHOW_ACTIVE ||
 437            delayed_show_type_ == SHOW_INACTIVE);
 438     Show(delayed_show_type_);
 439   }
 440 }
 441
 442 void AppWindow::OnNativeClose() {
 443   AppWindowRegistry::Get(browser_context_)->RemoveAppWindow(this);
 444   if (app_window_contents_) {
 445     WebContentsModalDialogManager* modal_dialog_manager =
 446         WebContentsModalDialogManager::FromWebContents(web_contents());
 447     if (modal_dialog_manager)  // May be null in unit tests.
 448       modal_dialog_manager->SetDelegate(nullptr);
 449     app_window_contents_->NativeWindowClosed();
 450   }
 451   delete this;
 452 }
 453
 454 void AppWindow::OnNativeWindowChanged() {
 455   SaveWindowPosition();
 456
 457 #if defined(OS_WIN)
 458   if (native_app_window_ && cached_always_on_top_ && !IsFullscreen() &&
 459       !native_app_window_->IsMaximized() &&
 460       !native_app_window_->IsMinimized()) {
 461     UpdateNativeAlwaysOnTop();
 462   }
 463 #endif
 464
 465   if (app_window_contents_ && native_app_window_)
 466     app_window_contents_->NativeWindowChanged(native_app_window_.get());
 467 }
 468
 469 void AppWindow::OnNativeWindowActivated() {
 470   AppWindowRegistry::Get(browser_context_)->AppWindowActivated(this);
 471 }
 472
 473 content::WebContents* AppWindow::web_contents() const {
 474   return app_window_contents_->GetWebContents();
 475 }
 476
 477 const Extension* AppWindow::GetExtension() const {
 478   return ExtensionRegistry::Get(browser_context_)
 479       ->enabled_extensions()
 480       .GetByID(extension_id_);
 481 }
 482
 483 NativeAppWindow* AppWindow::GetBaseWindow() { return native_app_window_.get(); }
 484
 485 gfx::NativeWindow AppWindow::GetNativeWindow() {
 486   return GetBaseWindow()->GetNativeWindow();
 487 }
 488
 489 gfx::Rect AppWindow::GetClientBounds() const {
 490   gfx::Rect bounds = native_app_window_->GetBounds();
 491   bounds.Inset(native_app_window_->GetFrameInsets());
 492   return bounds;
 493 }
 494
 495 base::string16 AppWindow::GetTitle() const {
 496   const Extension* extension = GetExtension();
 497   if (!extension)
 498     return base::string16();
 499
 500   // WebContents::GetTitle() will return the page's URL if there's no <title>
 501   // specified. However, we'd prefer to show the name of the extension in that
 502   // case, so we directly inspect the NavigationEntry's title.
 503   base::string16 title;
 504   if (!web_contents() || !web_contents()->GetController().GetActiveEntry() ||
 505       web_contents()->GetController().GetActiveEntry()->GetTitle().empty()) {
 506     title = base::UTF8ToUTF16(extension->name());
 507   } else {
 508     title = web_contents()->GetTitle();
 509   }
 510   base::RemoveChars(title, base::ASCIIToUTF16("\n"), &title);
 511   return title;
 512 }
 513
 514 void AppWindow::SetAppIconUrl(const GURL& url) {
 515   // If the same url is being used for the badge, ignore it.
 516   if (url == badge_icon_url_)
 517     return;
 518
 519   // Avoid using any previous icons that were being downloaded.
 520   image_loader_ptr_factory_.InvalidateWeakPtrs();
 521
 522   // Reset |app_icon_image_| to abort pending image load (if any).
 523   app_icon_image_.reset();
 524
 525   app_icon_url_ = url;
 526   web_contents()->DownloadImage(
 527       url,
 528       true,   // is a favicon
 529       0,      // no maximum size
 530       false,  // normal cache policy
 531       base::Bind(&AppWindow::DidDownloadFavicon,
 532                  image_loader_ptr_factory_.GetWeakPtr()));
 533 }
 534
 535 void AppWindow::SetBadgeIconUrl(const GURL& url) {
 536   // Avoid using any previous icons that were being downloaded.
 537   image_loader_ptr_factory_.InvalidateWeakPtrs();
 538
 539   // Reset |app_icon_image_| to abort pending image load (if any).
 540   badge_icon_image_.reset();
 541
 542   badge_icon_url_ = url;
 543   web_contents()->DownloadImage(
 544       url,
 545       true,   // is a favicon
 546       0,      // no maximum size
 547       false,  // normal cache policy
 548       base::Bind(&AppWindow::DidDownloadFavicon,
 549                  image_loader_ptr_factory_.GetWeakPtr()));
 550 }
 551
 552 void AppWindow::ClearBadge() {
 553   badge_icon_image_.reset();
 554   badge_icon_url_ = GURL();
 555   UpdateBadgeIcon(gfx::Image());
 556 }
 557
 558 void AppWindow::UpdateShape(scoped_ptr<SkRegion> region) {
 559   native_app_window_->UpdateShape(region.Pass());
 560 }
 561
 562 void AppWindow::UpdateDraggableRegions(
 563     const std::vector<DraggableRegion>& regions) {
 564   native_app_window_->UpdateDraggableRegions(regions);
 565 }
 566
 567 void AppWindow::UpdateAppIcon(const gfx::Image& image) {
 568   if (image.IsEmpty())
 569     return;
 570   app_icon_ = image;
 571   native_app_window_->UpdateWindowIcon();
 572   AppWindowRegistry::Get(browser_context_)->AppWindowIconChanged(this);
 573 }
 574
 575 void AppWindow::SetFullscreen(FullscreenType type, bool enable) {
 576   DCHECK_NE(FULLSCREEN_TYPE_NONE, type);
 577
 578   if (enable) {
 579 #if !defined(OS_MACOSX)
 580     // Do not enter fullscreen mode if disallowed by pref.
 581     // TODO(bartfab): Add a test once it becomes possible to simulate a user
 582     // gesture. http://crbug.com/174178
 583     if (type != FULLSCREEN_TYPE_FORCED) {
 584       PrefService* prefs =
 585           ExtensionsBrowserClient::Get()->GetPrefServiceForContext(
 586               browser_context());
 587       if (!prefs->GetBoolean(pref_names::kAppFullscreenAllowed))
 588         return;
 589     }
 590 #endif
 591     fullscreen_types_ |= type;
 592   } else {
 593     fullscreen_types_ &= ~type;
 594   }
 595   SetNativeWindowFullscreen();
 596 }
 597
 598 bool AppWindow::IsFullscreen() const {
 599   return fullscreen_types_ != FULLSCREEN_TYPE_NONE;
 600 }
 601
 602 bool AppWindow::IsForcedFullscreen() const {
 603   return (fullscreen_types_ & FULLSCREEN_TYPE_FORCED) != 0;
 604 }
 605
 606 bool AppWindow::IsHtmlApiFullscreen() const {
 607   return (fullscreen_types_ & FULLSCREEN_TYPE_HTML_API) != 0;
 608 }
 609
 610 void AppWindow::Fullscreen() {
 611   SetFullscreen(FULLSCREEN_TYPE_WINDOW_API, true);
 612 }
 613
 614 void AppWindow::Maximize() { GetBaseWindow()->Maximize(); }
 615
 616 void AppWindow::Minimize() { GetBaseWindow()->Minimize(); }
 617
 618 void AppWindow::Restore() {
 619   if (IsFullscreen()) {
 620     fullscreen_types_ = FULLSCREEN_TYPE_NONE;
 621     SetNativeWindowFullscreen();
 622   } else {
 623     GetBaseWindow()->Restore();
 624   }
 625 }
 626
 627 void AppWindow::OSFullscreen() {
 628   SetFullscreen(FULLSCREEN_TYPE_OS, true);
 629 }
 630
 631 void AppWindow::ForcedFullscreen() {
 632   SetFullscreen(FULLSCREEN_TYPE_FORCED, true);
 633 }
 634
 635 void AppWindow::SetContentSizeConstraints(const gfx::Size& min_size,
 636                                           const gfx::Size& max_size) {
 637   SizeConstraints constraints(min_size, max_size);
 638   native_app_window_->SetContentSizeConstraints(constraints.GetMinimumSize(),
 639                                                 constraints.GetMaximumSize());
 640
 641   gfx::Rect bounds = GetClientBounds();
 642   gfx::Size constrained_size = constraints.ClampSize(bounds.size());
 643   if (bounds.size() != constrained_size) {
 644     bounds.set_size(constrained_size);
 645     bounds.Inset(-native_app_window_->GetFrameInsets());
 646     native_app_window_->SetBounds(bounds);
 647   }
 648   OnNativeWindowChanged();
 649 }
 650
 651 void AppWindow::Show(ShowType show_type) {
 652   app_delegate_->OnShow();
 653   bool was_hidden = is_hidden_ || !has_been_shown_;
 654   is_hidden_ = false;
 655
 656   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
 657           switches::kEnableAppsShowOnFirstPaint)) {
 658     show_on_first_paint_ = true;
 659
 660     if (!first_paint_complete_) {
 661       delayed_show_type_ = show_type;
 662       return;
 663     }
 664   }
 665
 666   switch (show_type) {
 667     case SHOW_ACTIVE:
 668       GetBaseWindow()->Show();
 669       break;
 670     case SHOW_INACTIVE:
 671       GetBaseWindow()->ShowInactive();
 672       break;
 673   }
 674   AppWindowRegistry::Get(browser_context_)->AppWindowShown(this, was_hidden);
 675
 676   has_been_shown_ = true;
 677   SendOnWindowShownIfShown();
 678 }
 679
 680 void AppWindow::Hide() {
 681   // This is there to prevent race conditions with Hide() being called before
 682   // there was a non-empty paint. It should have no effect in a non-racy
 683   // scenario where the application is hiding then showing a window: the second
 684   // show will not be delayed.
 685   is_hidden_ = true;
 686   show_on_first_paint_ = false;
 687   GetBaseWindow()->Hide();
 688   AppWindowRegistry::Get(browser_context_)->AppWindowHidden(this);
 689   app_delegate_->OnHide();
 690 }
 691
 692 void AppWindow::SetAlwaysOnTop(bool always_on_top) {
 693   if (cached_always_on_top_ == always_on_top)
 694     return;
 695
 696   cached_always_on_top_ = always_on_top;
 697
 698   // As a security measure, do not allow fullscreen windows or windows that
 699   // overlap the taskbar to be on top. The property will be applied when the
 700   // window exits fullscreen and moves away from the taskbar.
 701   if (!IsFullscreen() && !IntersectsWithTaskbar())
 702     native_app_window_->SetAlwaysOnTop(always_on_top);
 703
 704   OnNativeWindowChanged();
 705 }
 706
 707 bool AppWindow::IsAlwaysOnTop() const { return cached_always_on_top_; }
 708
 709 void AppWindow::SetInterceptAllKeys(bool want_all_keys) {
 710   native_app_window_->SetInterceptAllKeys(want_all_keys);
 711 }
 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 (base::CommandLine::ForCurrentProcess()->HasSwitch(
 881           ::switches::kTestType)) {
 882     app_window_contents_->DispatchWindowShownForTests();
 883   }
 884 }
 885
 886 void AppWindow::CloseContents(WebContents* contents) {
 887   native_app_window_->Close();
 888 }
 889
 890 bool AppWindow::ShouldSuppressDialogs(WebContents* source) {
 891   return true;
 892 }
 893
 894 content::ColorChooser* AppWindow::OpenColorChooser(
 895     WebContents* web_contents,
 896     SkColor initial_color,
 897     const std::vector<content::ColorSuggestion>& suggestions) {
 898   return app_delegate_->ShowColorChooser(web_contents, initial_color);
 899 }
 900
 901 void AppWindow::RunFileChooser(WebContents* tab,
 902                                const content::FileChooserParams& params) {
 903   if (window_type_is_panel()) {
 904     // Panels can't host a file dialog, abort. TODO(stevenjb): allow file
 905     // dialogs to be unhosted but still close with the owning web contents.
 906     // crbug.com/172502.
 907     LOG(WARNING) << "File dialog opened by panel.";
 908     return;
 909   }
 910
 911   app_delegate_->RunFileChooser(tab, params);
 912 }
 913
 914 bool AppWindow::IsPopupOrPanel(const WebContents* source) const { return true; }
 915
 916 void AppWindow::MoveContents(WebContents* source, const gfx::Rect& pos) {
 917   native_app_window_->SetBounds(pos);
 918 }
 919
 920 void AppWindow::NavigationStateChanged(content::WebContents* source,
 921                                        content::InvalidateTypes changed_flags) {
 922   if (changed_flags & content::INVALIDATE_TYPE_TITLE)
 923     native_app_window_->UpdateWindowTitle();
 924   else if (changed_flags & content::INVALIDATE_TYPE_TAB)
 925     native_app_window_->UpdateWindowIcon();
 926 }
 927
 928 void AppWindow::EnterFullscreenModeForTab(content::WebContents* source,
 929                                           const GURL& origin) {
 930   ToggleFullscreenModeForTab(source, true);
 931 }
 932
 933 void AppWindow::ExitFullscreenModeForTab(content::WebContents* source) {
 934   ToggleFullscreenModeForTab(source, false);
 935 }
 936
 937 void AppWindow::ToggleFullscreenModeForTab(content::WebContents* source,
 938                                            bool enter_fullscreen) {
 939   const Extension* extension = GetExtension();
 940   if (!extension)
 941     return;
 942
 943   if (!IsExtensionWithPermissionOrSuggestInConsole(
 944           APIPermission::kFullscreen, extension, source->GetRenderViewHost())) {
 945     return;
 946   }
 947
 948   SetFullscreen(FULLSCREEN_TYPE_HTML_API, enter_fullscreen);
 949 }
 950
 951 bool AppWindow::IsFullscreenForTabOrPending(const content::WebContents* source)
 952     const {
 953   return IsHtmlApiFullscreen();
 954 }
 955
 956 void AppWindow::OnExtensionUnloaded(BrowserContext* browser_context,
 957                                     const Extension* extension,
 958                                     UnloadedExtensionInfo::Reason reason) {
 959   if (extension_id_ == extension->id())
 960     native_app_window_->Close();
 961 }
 962
 963 void AppWindow::OnExtensionWillBeInstalled(
 964     BrowserContext* browser_context,
 965     const Extension* extension,
 966     bool is_update,
 967     bool from_ephemeral,
 968     const std::string& old_name) {
 969   if (extension->id() == extension_id())
 970     native_app_window_->UpdateShelfMenu();
 971 }
 972 void AppWindow::SetWebContentsBlocked(content::WebContents* web_contents,
 973                                       bool blocked) {
 974   app_delegate_->SetWebContentsBlocked(web_contents, blocked);
 975 }
 976
 977 bool AppWindow::IsWebContentsVisible(content::WebContents* web_contents) {
 978   return app_delegate_->IsWebContentsVisible(web_contents);
 979 }
 980
 981 WebContentsModalDialogHost* AppWindow::GetWebContentsModalDialogHost() {
 982   return native_app_window_.get();
 983 }
 984
 985 void AppWindow::SaveWindowPosition() {
 986   if (window_key_.empty())
 987     return;
 988   if (!native_app_window_)
 989     return;
 990
 991   AppWindowGeometryCache* cache =
 992       AppWindowGeometryCache::Get(browser_context());
 993
 994   gfx::Rect bounds = native_app_window_->GetRestoredBounds();
 995   gfx::Rect screen_bounds =
 996       gfx::Screen::GetNativeScreen()->GetDisplayMatching(bounds).work_area();
 997   ui::WindowShowState window_state = native_app_window_->GetRestoredState();
 998   cache->SaveGeometry(
 999       extension_id(), window_key_, bounds, screen_bounds, window_state);
1000 }
1001
1002 void AppWindow::AdjustBoundsToBeVisibleOnScreen(
1003     const gfx::Rect& cached_bounds,
1004     const gfx::Rect& cached_screen_bounds,
1005     const gfx::Rect& current_screen_bounds,
1006     const gfx::Size& minimum_size,
1007     gfx::Rect* bounds) const {
1008   *bounds = cached_bounds;
1009
1010   // Reposition and resize the bounds if the cached_screen_bounds is different
1011   // from the current screen bounds and the current screen bounds doesn't
1012   // completely contain the bounds.
1013   if (cached_screen_bounds != current_screen_bounds &&
1014       !current_screen_bounds.Contains(cached_bounds)) {
1015     bounds->set_width(
1016         std::max(minimum_size.width(),
1017                  std::min(bounds->width(), current_screen_bounds.width())));
1018     bounds->set_height(
1019         std::max(minimum_size.height(),
1020                  std::min(bounds->height(), current_screen_bounds.height())));
1021     bounds->set_x(
1022         std::max(current_screen_bounds.x(),
1023                  std::min(bounds->x(),
1024                           current_screen_bounds.right() - bounds->width())));
1025     bounds->set_y(
1026         std::max(current_screen_bounds.y(),
1027                  std::min(bounds->y(),
1028                           current_screen_bounds.bottom() - bounds->height())));
1029   }
1030 }
1031
1032 AppWindow::CreateParams AppWindow::LoadDefaults(CreateParams params)
1033     const {
1034   // Ensure width and height are specified.
1035   if (params.content_spec.bounds.width() == 0 &&
1036       params.window_spec.bounds.width() == 0) {
1037     params.content_spec.bounds.set_width(kDefaultWidth);
1038   }
1039   if (params.content_spec.bounds.height() == 0 &&
1040       params.window_spec.bounds.height() == 0) {
1041     params.content_spec.bounds.set_height(kDefaultHeight);
1042   }
1043
1044   // If left and top are left undefined, the native app window will center
1045   // the window on the main screen in a platform-defined manner.
1046
1047   // Load cached state if it exists.
1048   if (!params.window_key.empty()) {
1049     AppWindowGeometryCache* cache =
1050         AppWindowGeometryCache::Get(browser_context());
1051
1052     gfx::Rect cached_bounds;
1053     gfx::Rect cached_screen_bounds;
1054     ui::WindowShowState cached_state = ui::SHOW_STATE_DEFAULT;
1055     if (cache->GetGeometry(extension_id(),
1056                            params.window_key,
1057                            &cached_bounds,
1058                            &cached_screen_bounds,
1059                            &cached_state)) {
1060       // App window has cached screen bounds, make sure it fits on screen in
1061       // case the screen resolution changed.
1062       gfx::Screen* screen = gfx::Screen::GetNativeScreen();
1063       gfx::Display display = screen->GetDisplayMatching(cached_bounds);
1064       gfx::Rect current_screen_bounds = display.work_area();
1065       SizeConstraints constraints(params.GetWindowMinimumSize(gfx::Insets()),
1066                                   params.GetWindowMaximumSize(gfx::Insets()));
1067       AdjustBoundsToBeVisibleOnScreen(cached_bounds,
1068                                       cached_screen_bounds,
1069                                       current_screen_bounds,
1070                                       constraints.GetMinimumSize(),
1071                                       &params.window_spec.bounds);
1072       params.state = cached_state;
1073
1074       // Since we are restoring a cached state, reset the content bounds spec to
1075       // ensure it is not used.
1076       params.content_spec.ResetBounds();
1077     }
1078   }
1079
1080   return params;
1081 }
1082
1083 // static
1084 SkRegion* AppWindow::RawDraggableRegionsToSkRegion(
1085     const std::vector<DraggableRegion>& regions) {
1086   SkRegion* sk_region = new SkRegion;
1087   for (std::vector<DraggableRegion>::const_iterator iter = regions.begin();
1088        iter != regions.end();
1089        ++iter) {
1090     const DraggableRegion& region = *iter;
1091     sk_region->op(
1092         region.bounds.x(),
1093         region.bounds.y(),
1094         region.bounds.right(),
1095         region.bounds.bottom(),
1096         region.draggable ? SkRegion::kUnion_Op : SkRegion::kDifference_Op);
1097   }
1098   return sk_region;
1099 }
1100
1101 }  // namespace extensions