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       is_ime_window(false),
 161       creator_process_id(0),
 162       state(ui::SHOW_STATE_DEFAULT),
 163       hidden(false),
 164       resizable(true),
 165       focused(true),
 166       always_on_top(false),
 167       visible_on_all_workspaces(false) {
 168 }
 169
 170 AppWindow::CreateParams::~CreateParams() {}
 171
 172 gfx::Rect AppWindow::CreateParams::GetInitialWindowBounds(
 173     const gfx::Insets& frame_insets) const {
 174   // Combine into a single window bounds.
 175   gfx::Rect combined_bounds(window_spec.bounds);
 176   if (content_spec.bounds.x() != BoundsSpecification::kUnspecifiedPosition)
 177     combined_bounds.set_x(content_spec.bounds.x() - frame_insets.left());
 178   if (content_spec.bounds.y() != BoundsSpecification::kUnspecifiedPosition)
 179     combined_bounds.set_y(content_spec.bounds.y() - frame_insets.top());
 180   if (content_spec.bounds.width() > 0) {
 181     combined_bounds.set_width(
 182         content_spec.bounds.width() + frame_insets.width());
 183   }
 184   if (content_spec.bounds.height() > 0) {
 185     combined_bounds.set_height(
 186         content_spec.bounds.height() + frame_insets.height());
 187   }
 188
 189   // Constrain the bounds.
 190   SizeConstraints constraints(
 191       GetCombinedWindowConstraints(
 192           window_spec.minimum_size, content_spec.minimum_size, frame_insets),
 193       GetCombinedWindowConstraints(
 194           window_spec.maximum_size, content_spec.maximum_size, frame_insets));
 195   combined_bounds.set_size(constraints.ClampSize(combined_bounds.size()));
 196
 197   return combined_bounds;
 198 }
 199
 200 gfx::Size AppWindow::CreateParams::GetContentMinimumSize(
 201     const gfx::Insets& frame_insets) const {
 202   return GetCombinedContentConstraints(window_spec.minimum_size,
 203                                        content_spec.minimum_size,
 204                                        frame_insets);
 205 }
 206
 207 gfx::Size AppWindow::CreateParams::GetContentMaximumSize(
 208     const gfx::Insets& frame_insets) const {
 209   return GetCombinedContentConstraints(window_spec.maximum_size,
 210                                        content_spec.maximum_size,
 211                                        frame_insets);
 212 }
 213
 214 gfx::Size AppWindow::CreateParams::GetWindowMinimumSize(
 215     const gfx::Insets& frame_insets) const {
 216   return GetCombinedWindowConstraints(window_spec.minimum_size,
 217                                       content_spec.minimum_size,
 218                                       frame_insets);
 219 }
 220
 221 gfx::Size AppWindow::CreateParams::GetWindowMaximumSize(
 222     const gfx::Insets& frame_insets) const {
 223   return GetCombinedWindowConstraints(window_spec.maximum_size,
 224                                       content_spec.maximum_size,
 225                                       frame_insets);
 226 }
 227
 228 // AppWindow
 229
 230 AppWindow::AppWindow(BrowserContext* context,
 231                      AppDelegate* app_delegate,
 232                      const Extension* extension)
 233     : browser_context_(context),
 234       extension_id_(extension->id()),
 235       window_type_(WINDOW_TYPE_DEFAULT),
 236       app_delegate_(app_delegate),
 237       image_loader_ptr_factory_(this),
 238       fullscreen_types_(FULLSCREEN_TYPE_NONE),
 239       show_on_first_paint_(false),
 240       first_paint_complete_(false),
 241       has_been_shown_(false),
 242       can_send_events_(false),
 243       is_hidden_(false),
 244       cached_always_on_top_(false),
 245       requested_alpha_enabled_(false) {
 246   ExtensionsBrowserClient* client = ExtensionsBrowserClient::Get();
 247   CHECK(!client->IsGuestSession(context) || context->IsOffTheRecord())
 248       << "Only off the record window may be opened in the guest mode.";
 249 }
 250
 251 void AppWindow::Init(const GURL& url,
 252                      AppWindowContents* app_window_contents,
 253                      const CreateParams& params) {
 254   // Initialize the render interface and web contents
 255   app_window_contents_.reset(app_window_contents);
 256   app_window_contents_->Initialize(browser_context(), url);
 257   WebContents* web_contents = app_window_contents_->GetWebContents();
 258   if (CommandLine::ForCurrentProcess()->HasSwitch(
 259           switches::kEnableAppsShowOnFirstPaint)) {
 260     content::WebContentsObserver::Observe(web_contents);
 261   }
 262   app_delegate_->InitWebContents(web_contents);
 263
 264   WebContentsModalDialogManager::CreateForWebContents(web_contents);
 265
 266   web_contents->SetDelegate(this);
 267   WebContentsModalDialogManager::FromWebContents(web_contents)
 268       ->SetDelegate(this);
 269   SetViewType(web_contents, VIEW_TYPE_APP_WINDOW);
 270
 271   // Initialize the window
 272   CreateParams new_params = LoadDefaults(params);
 273   window_type_ = new_params.window_type;
 274   window_key_ = new_params.window_key;
 275
 276   // Windows cannot be always-on-top in fullscreen mode for security reasons.
 277   cached_always_on_top_ = new_params.always_on_top;
 278   if (new_params.state == ui::SHOW_STATE_FULLSCREEN)
 279     new_params.always_on_top = false;
 280
 281   requested_alpha_enabled_ = new_params.alpha_enabled;
 282
 283   AppWindowClient* app_window_client = AppWindowClient::Get();
 284   native_app_window_.reset(
 285       app_window_client->CreateNativeAppWindow(this, &new_params));
 286
 287   helper_.reset(new AppWebContentsHelper(
 288       browser_context_, extension_id_, web_contents, app_delegate_.get()));
 289
 290   popup_manager_.reset(
 291       new web_modal::PopupManager(GetWebContentsModalDialogHost()));
 292   popup_manager_->RegisterWith(web_contents);
 293
 294   UpdateExtensionAppIcon();
 295   AppWindowRegistry::Get(browser_context_)->AddAppWindow(this);
 296
 297   if (new_params.hidden) {
 298     // Although the window starts hidden by default, calling Hide() here
 299     // notifies observers of the window being hidden.
 300     Hide();
 301   } else {
 302     // Panels are not activated by default.
 303     Show(window_type_is_panel() || !new_params.focused ? SHOW_INACTIVE
 304                                                        : SHOW_ACTIVE);
 305   }
 306
 307   if (new_params.state == ui::SHOW_STATE_FULLSCREEN)
 308     Fullscreen();
 309   else if (new_params.state == ui::SHOW_STATE_MAXIMIZED)
 310     Maximize();
 311   else if (new_params.state == ui::SHOW_STATE_MINIMIZED)
 312     Minimize();
 313
 314   OnNativeWindowChanged();
 315
 316   // When the render view host is changed, the native window needs to know
 317   // about it in case it has any setup to do to make the renderer appear
 318   // properly. In particular, on Windows, the view's clickthrough region needs
 319   // to be set[
 320   ExtensionsBrowserClient* client = ExtensionsBrowserClient::Get();
 321   registrar_.Add(this,
 322                  NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
 323                  content::Source<content::BrowserContext>(
 324                      client->GetOriginalContext(browser_context_)));
 325   // Update the app menu if an ephemeral app becomes installed.
 326   registrar_.Add(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   bool was_hidden = is_hidden_ || !has_been_shown_;
 660   is_hidden_ = false;
 661
 662   if (CommandLine::ForCurrentProcess()->HasSwitch(
 663           switches::kEnableAppsShowOnFirstPaint)) {
 664     show_on_first_paint_ = true;
 665
 666     if (!first_paint_complete_) {
 667       delayed_show_type_ = show_type;
 668       return;
 669     }
 670   }
 671
 672   switch (show_type) {
 673     case SHOW_ACTIVE:
 674       GetBaseWindow()->Show();
 675       break;
 676     case SHOW_INACTIVE:
 677       GetBaseWindow()->ShowInactive();
 678       break;
 679   }
 680   AppWindowRegistry::Get(browser_context_)->AppWindowShown(this, was_hidden);
 681
 682   has_been_shown_ = true;
 683   SendOnWindowShownIfShown();
 684 }
 685
 686 void AppWindow::Hide() {
 687   // This is there to prevent race conditions with Hide() being called before
 688   // there was a non-empty paint. It should have no effect in a non-racy
 689   // scenario where the application is hiding then showing a window: the second
 690   // show will not be delayed.
 691   is_hidden_ = true;
 692   show_on_first_paint_ = false;
 693   GetBaseWindow()->Hide();
 694   AppWindowRegistry::Get(browser_context_)->AppWindowHidden(this);
 695 }
 696
 697 void AppWindow::SetAlwaysOnTop(bool always_on_top) {
 698   if (cached_always_on_top_ == always_on_top)
 699     return;
 700
 701   cached_always_on_top_ = always_on_top;
 702
 703   // As a security measure, do not allow fullscreen windows or windows that
 704   // overlap the taskbar to be on top. The property will be applied when the
 705   // window exits fullscreen and moves away from the taskbar.
 706   if (!IsFullscreen() && !IntersectsWithTaskbar())
 707     native_app_window_->SetAlwaysOnTop(always_on_top);
 708
 709   OnNativeWindowChanged();
 710 }
 711
 712 bool AppWindow::IsAlwaysOnTop() const { return cached_always_on_top_; }
 713
 714 void AppWindow::WindowEventsReady() {
 715   can_send_events_ = true;
 716   SendOnWindowShownIfShown();
 717 }
 718
 719 void AppWindow::GetSerializedState(base::DictionaryValue* properties) const {
 720   DCHECK(properties);
 721
 722   properties->SetBoolean("fullscreen",
 723                          native_app_window_->IsFullscreenOrPending());
 724   properties->SetBoolean("minimized", native_app_window_->IsMinimized());
 725   properties->SetBoolean("maximized", native_app_window_->IsMaximized());
 726   properties->SetBoolean("alwaysOnTop", IsAlwaysOnTop());
 727   properties->SetBoolean("hasFrameColor", native_app_window_->HasFrameColor());
 728   properties->SetBoolean(
 729       "alphaEnabled",
 730       requested_alpha_enabled_ && native_app_window_->CanHaveAlphaEnabled());
 731
 732   // These properties are undocumented and are to enable testing. Alpha is
 733   // removed to
 734   // make the values easier to check.
 735   SkColor transparent_white = ~SK_ColorBLACK;
 736   properties->SetInteger(
 737       "activeFrameColor",
 738       native_app_window_->ActiveFrameColor() & transparent_white);
 739   properties->SetInteger(
 740       "inactiveFrameColor",
 741       native_app_window_->InactiveFrameColor() & transparent_white);
 742
 743   gfx::Rect content_bounds = GetClientBounds();
 744   gfx::Size content_min_size = native_app_window_->GetContentMinimumSize();
 745   gfx::Size content_max_size = native_app_window_->GetContentMaximumSize();
 746   SetBoundsProperties(content_bounds,
 747                       content_min_size,
 748                       content_max_size,
 749                       "innerBounds",
 750                       properties);
 751
 752   gfx::Insets frame_insets = native_app_window_->GetFrameInsets();
 753   gfx::Rect frame_bounds = native_app_window_->GetBounds();
 754   gfx::Size frame_min_size = SizeConstraints::AddFrameToConstraints(
 755       content_min_size, frame_insets);
 756   gfx::Size frame_max_size = SizeConstraints::AddFrameToConstraints(
 757       content_max_size, frame_insets);
 758   SetBoundsProperties(frame_bounds,
 759                       frame_min_size,
 760                       frame_max_size,
 761                       "outerBounds",
 762                       properties);
 763 }
 764
 765 //------------------------------------------------------------------------------
 766 // Private methods
 767
 768 void AppWindow::UpdateBadgeIcon(const gfx::Image& image) {
 769   badge_icon_ = image;
 770   native_app_window_->UpdateBadgeIcon();
 771 }
 772
 773 void AppWindow::DidDownloadFavicon(
 774     int id,
 775     int http_status_code,
 776     const GURL& image_url,
 777     const std::vector<SkBitmap>& bitmaps,
 778     const std::vector<gfx::Size>& original_bitmap_sizes) {
 779   if ((image_url != app_icon_url_ && image_url != badge_icon_url_) ||
 780       bitmaps.empty()) {
 781     return;
 782   }
 783
 784   // Bitmaps are ordered largest to smallest. Choose the smallest bitmap
 785   // whose height >= the preferred size.
 786   int largest_index = 0;
 787   for (size_t i = 1; i < bitmaps.size(); ++i) {
 788     if (bitmaps[i].height() < app_delegate_->PreferredIconSize())
 789       break;
 790     largest_index = i;
 791   }
 792   const SkBitmap& largest = bitmaps[largest_index];
 793   if (image_url == app_icon_url_) {
 794     UpdateAppIcon(gfx::Image::CreateFrom1xBitmap(largest));
 795     return;
 796   }
 797
 798   UpdateBadgeIcon(gfx::Image::CreateFrom1xBitmap(largest));
 799 }
 800
 801 void AppWindow::OnExtensionIconImageChanged(IconImage* image) {
 802   DCHECK_EQ(app_icon_image_.get(), image);
 803
 804   UpdateAppIcon(gfx::Image(app_icon_image_->image_skia()));
 805 }
 806
 807 void AppWindow::UpdateExtensionAppIcon() {
 808   // Avoid using any previous app icons were being downloaded.
 809   image_loader_ptr_factory_.InvalidateWeakPtrs();
 810
 811   const Extension* extension = GetExtension();
 812   if (!extension)
 813     return;
 814
 815   gfx::ImageSkia app_default_icon =
 816       *ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
 817           IDR_APP_DEFAULT_ICON);
 818
 819   app_icon_image_.reset(new IconImage(browser_context(),
 820                                       extension,
 821                                       IconsInfo::GetIcons(extension),
 822                                       app_delegate_->PreferredIconSize(),
 823                                       app_default_icon,
 824                                       this));
 825
 826   // Triggers actual image loading with 1x resources. The 2x resource will
 827   // be handled by IconImage class when requested.
 828   app_icon_image_->image_skia().GetRepresentation(1.0f);
 829 }
 830
 831 void AppWindow::SetNativeWindowFullscreen() {
 832   native_app_window_->SetFullscreen(fullscreen_types_);
 833
 834   if (cached_always_on_top_)
 835     UpdateNativeAlwaysOnTop();
 836 }
 837
 838 bool AppWindow::IntersectsWithTaskbar() const {
 839 #if defined(OS_WIN)
 840   gfx::Screen* screen = gfx::Screen::GetNativeScreen();
 841   gfx::Rect window_bounds = native_app_window_->GetRestoredBounds();
 842   std::vector<gfx::Display> displays = screen->GetAllDisplays();
 843
 844   for (std::vector<gfx::Display>::const_iterator it = displays.begin();
 845        it != displays.end();
 846        ++it) {
 847     gfx::Rect taskbar_bounds = it->bounds();
 848     taskbar_bounds.Subtract(it->work_area());
 849     if (taskbar_bounds.IsEmpty())
 850       continue;
 851
 852     if (window_bounds.Intersects(taskbar_bounds))
 853       return true;
 854   }
 855 #endif
 856
 857   return false;
 858 }
 859
 860 void AppWindow::UpdateNativeAlwaysOnTop() {
 861   DCHECK(cached_always_on_top_);
 862   bool is_on_top = native_app_window_->IsAlwaysOnTop();
 863   bool fullscreen = IsFullscreen();
 864   bool intersects_taskbar = IntersectsWithTaskbar();
 865
 866   if (is_on_top && (fullscreen || intersects_taskbar)) {
 867     // When entering fullscreen or overlapping the taskbar, ensure windows are
 868     // not always-on-top.
 869     native_app_window_->SetAlwaysOnTop(false);
 870   } else if (!is_on_top && !fullscreen && !intersects_taskbar) {
 871     // When exiting fullscreen and moving away from the taskbar, reinstate
 872     // always-on-top.
 873     native_app_window_->SetAlwaysOnTop(true);
 874   }
 875 }
 876
 877 void AppWindow::SendOnWindowShownIfShown() {
 878   if (!can_send_events_ || !has_been_shown_)
 879     return;
 880
 881   if (CommandLine::ForCurrentProcess()->HasSwitch(::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() { return true; }
 891
 892 content::ColorChooser* AppWindow::OpenColorChooser(
 893     WebContents* web_contents,
 894     SkColor initial_color,
 895     const std::vector<content::ColorSuggestion>& suggestions) {
 896   return app_delegate_->ShowColorChooser(web_contents, initial_color);
 897 }
 898
 899 void AppWindow::RunFileChooser(WebContents* tab,
 900                                const content::FileChooserParams& params) {
 901   if (window_type_is_panel()) {
 902     // Panels can't host a file dialog, abort. TODO(stevenjb): allow file
 903     // dialogs to be unhosted but still close with the owning web contents.
 904     // crbug.com/172502.
 905     LOG(WARNING) << "File dialog opened by panel.";
 906     return;
 907   }
 908
 909   app_delegate_->RunFileChooser(tab, params);
 910 }
 911
 912 bool AppWindow::IsPopupOrPanel(const WebContents* source) const { return true; }
 913
 914 void AppWindow::MoveContents(WebContents* source, const gfx::Rect& pos) {
 915   native_app_window_->SetBounds(pos);
 916 }
 917
 918 void AppWindow::NavigationStateChanged(const content::WebContents* source,
 919                                        content::InvalidateTypes changed_flags) {
 920   if (changed_flags & content::INVALIDATE_TYPE_TITLE)
 921     native_app_window_->UpdateWindowTitle();
 922   else if (changed_flags & content::INVALIDATE_TYPE_TAB)
 923     native_app_window_->UpdateWindowIcon();
 924 }
 925
 926 void AppWindow::ToggleFullscreenModeForTab(content::WebContents* source,
 927                                            bool enter_fullscreen) {
 928   const Extension* extension = GetExtension();
 929   if (!extension)
 930     return;
 931
 932   if (!IsExtensionWithPermissionOrSuggestInConsole(
 933           APIPermission::kFullscreen, extension, source->GetRenderViewHost())) {
 934     return;
 935   }
 936
 937   SetFullscreen(FULLSCREEN_TYPE_HTML_API, enter_fullscreen);
 938 }
 939
 940 bool AppWindow::IsFullscreenForTabOrPending(const content::WebContents* source)
 941     const {
 942   return IsHtmlApiFullscreen();
 943 }
 944
 945 void AppWindow::Observe(int type,
 946                         const content::NotificationSource& source,
 947                         const content::NotificationDetails& details) {
 948   switch (type) {
 949     case NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED: {
 950       const Extension* unloaded_extension =
 951           content::Details<UnloadedExtensionInfo>(details)->extension;
 952       if (extension_id_ == unloaded_extension->id())
 953         native_app_window_->Close();
 954       break;
 955     }
 956     case NOTIFICATION_EXTENSION_WILL_BE_INSTALLED_DEPRECATED: {
 957       const Extension* installed_extension =
 958           content::Details<const InstalledExtensionInfo>(details)->extension;
 959       DCHECK(installed_extension);
 960       if (installed_extension->id() == extension_id())
 961         native_app_window_->UpdateShelfMenu();
 962       break;
 963     }
 964     default:
 965       NOTREACHED() << "Received unexpected notification";
 966   }
 967 }
 968
 969 void AppWindow::SetWebContentsBlocked(content::WebContents* web_contents,
 970                                       bool blocked) {
 971   app_delegate_->SetWebContentsBlocked(web_contents, blocked);
 972 }
 973
 974 bool AppWindow::IsWebContentsVisible(content::WebContents* web_contents) {
 975   return app_delegate_->IsWebContentsVisible(web_contents);
 976 }
 977
 978 WebContentsModalDialogHost* AppWindow::GetWebContentsModalDialogHost() {
 979   return native_app_window_.get();
 980 }
 981
 982 void AppWindow::SaveWindowPosition() {
 983   if (window_key_.empty())
 984     return;
 985   if (!native_app_window_)
 986     return;
 987
 988   AppWindowGeometryCache* cache =
 989       AppWindowGeometryCache::Get(browser_context());
 990
 991   gfx::Rect bounds = native_app_window_->GetRestoredBounds();
 992   gfx::Rect screen_bounds =
 993       gfx::Screen::GetNativeScreen()->GetDisplayMatching(bounds).work_area();
 994   ui::WindowShowState window_state = native_app_window_->GetRestoredState();
 995   cache->SaveGeometry(
 996       extension_id(), window_key_, bounds, screen_bounds, window_state);
 997 }
 998
 999 void AppWindow::AdjustBoundsToBeVisibleOnScreen(
1000     const gfx::Rect& cached_bounds,
1001     const gfx::Rect& cached_screen_bounds,
1002     const gfx::Rect& current_screen_bounds,
1003     const gfx::Size& minimum_size,
1004     gfx::Rect* bounds) const {
1005   *bounds = cached_bounds;
1006
1007   // Reposition and resize the bounds if the cached_screen_bounds is different
1008   // from the current screen bounds and the current screen bounds doesn't
1009   // completely contain the bounds.
1010   if (cached_screen_bounds != current_screen_bounds &&
1011       !current_screen_bounds.Contains(cached_bounds)) {
1012     bounds->set_width(
1013         std::max(minimum_size.width(),
1014                  std::min(bounds->width(), current_screen_bounds.width())));
1015     bounds->set_height(
1016         std::max(minimum_size.height(),
1017                  std::min(bounds->height(), current_screen_bounds.height())));
1018     bounds->set_x(
1019         std::max(current_screen_bounds.x(),
1020                  std::min(bounds->x(),
1021                           current_screen_bounds.right() - bounds->width())));
1022     bounds->set_y(
1023         std::max(current_screen_bounds.y(),
1024                  std::min(bounds->y(),
1025                           current_screen_bounds.bottom() - bounds->height())));
1026   }
1027 }
1028
1029 AppWindow::CreateParams AppWindow::LoadDefaults(CreateParams params)
1030     const {
1031   // Ensure width and height are specified.
1032   if (params.content_spec.bounds.width() == 0 &&
1033       params.window_spec.bounds.width() == 0) {
1034     params.content_spec.bounds.set_width(kDefaultWidth);
1035   }
1036   if (params.content_spec.bounds.height() == 0 &&
1037       params.window_spec.bounds.height() == 0) {
1038     params.content_spec.bounds.set_height(kDefaultHeight);
1039   }
1040
1041   // If left and top are left undefined, the native app window will center
1042   // the window on the main screen in a platform-defined manner.
1043
1044   // Load cached state if it exists.
1045   if (!params.window_key.empty()) {
1046     AppWindowGeometryCache* cache =
1047         AppWindowGeometryCache::Get(browser_context());
1048
1049     gfx::Rect cached_bounds;
1050     gfx::Rect cached_screen_bounds;
1051     ui::WindowShowState cached_state = ui::SHOW_STATE_DEFAULT;
1052     if (cache->GetGeometry(extension_id(),
1053                            params.window_key,
1054                            &cached_bounds,
1055                            &cached_screen_bounds,
1056                            &cached_state)) {
1057       // App window has cached screen bounds, make sure it fits on screen in
1058       // case the screen resolution changed.
1059       gfx::Screen* screen = gfx::Screen::GetNativeScreen();
1060       gfx::Display display = screen->GetDisplayMatching(cached_bounds);
1061       gfx::Rect current_screen_bounds = display.work_area();
1062       SizeConstraints constraints(params.GetWindowMinimumSize(gfx::Insets()),
1063                                   params.GetWindowMaximumSize(gfx::Insets()));
1064       AdjustBoundsToBeVisibleOnScreen(cached_bounds,
1065                                       cached_screen_bounds,
1066                                       current_screen_bounds,
1067                                       constraints.GetMinimumSize(),
1068                                       &params.window_spec.bounds);
1069       params.state = cached_state;
1070
1071       // Since we are restoring a cached state, reset the content bounds spec to
1072       // ensure it is not used.
1073       params.content_spec.ResetBounds();
1074     }
1075   }
1076
1077   return params;
1078 }
1079
1080 // static
1081 SkRegion* AppWindow::RawDraggableRegionsToSkRegion(
1082     const std::vector<DraggableRegion>& regions) {
1083   SkRegion* sk_region = new SkRegion;
1084   for (std::vector<DraggableRegion>::const_iterator iter = regions.begin();
1085        iter != regions.end();
1086        ++iter) {
1087     const DraggableRegion& region = *iter;
1088     sk_region->op(
1089         region.bounds.x(),
1090         region.bounds.y(),
1091         region.bounds.right(),
1092         region.bounds.bottom(),
1093         region.draggable ? SkRegion::kUnion_Op : SkRegion::kDifference_Op);
1094   }
1095   return sk_region;
1096 }
1097
1098 }  // namespace extensions