src/apps/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 "apps/app_window.h"
   6
   7 #include <algorithm>
   8 #include <string>
   9 #include <vector>
  10
  11 #include "apps/app_delegate.h"
  12 #include "apps/app_web_contents_helper.h"
  13 #include "apps/app_window_geometry_cache.h"
  14 #include "apps/app_window_registry.h"
  15 #include "apps/size_constraints.h"
  16 #include "apps/ui/apps_client.h"
  17 #include "apps/ui/native_app_window.h"
  18 #include "apps/ui/web_contents_sizer.h"
  19 #include "base/command_line.h"
  20 #include "base/strings/string_util.h"
  21 #include "base/strings/utf_string_conversions.h"
  22 #include "base/values.h"
  23 #include "chrome/browser/chrome_notification_types.h"
  24 #include "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
  25 #include "chrome/browser/extensions/suggest_permission_util.h"
  26 #include "chrome/common/chrome_switches.h"
  27 #include "components/web_modal/web_contents_modal_dialog_manager.h"
  28 #include "content/public/browser/browser_context.h"
  29 #include "content/public/browser/invalidate_type.h"
  30 #include "content/public/browser/navigation_entry.h"
  31 #include "content/public/browser/notification_details.h"
  32 #include "content/public/browser/notification_service.h"
  33 #include "content/public/browser/notification_source.h"
  34 #include "content/public/browser/notification_types.h"
  35 #include "content/public/browser/render_view_host.h"
  36 #include "content/public/browser/resource_dispatcher_host.h"
  37 #include "content/public/browser/web_contents.h"
  38 #include "content/public/common/content_switches.h"
  39 #include "content/public/common/media_stream_request.h"
  40 #include "extensions/browser/extension_registry.h"
  41 #include "extensions/browser/extension_system.h"
  42 #include "extensions/browser/extensions_browser_client.h"
  43 #include "extensions/browser/notification_types.h"
  44 #include "extensions/browser/process_manager.h"
  45 #include "extensions/browser/view_type_utils.h"
  46 #include "extensions/common/draggable_region.h"
  47 #include "extensions/common/extension.h"
  48 #include "extensions/common/manifest_handlers/icons_handler.h"
  49 #include "extensions/common/permissions/permissions_data.h"
  50 #include "grit/theme_resources.h"
  51 #include "third_party/skia/include/core/SkRegion.h"
  52 #include "ui/base/resource/resource_bundle.h"
  53 #include "ui/gfx/screen.h"
  54
  55 #if !defined(OS_MACOSX)
  56 #include "apps/pref_names.h"
  57 #include "base/prefs/pref_service.h"
  58 #endif
  59
  60 using content::BrowserContext;
  61 using content::ConsoleMessageLevel;
  62 using content::WebContents;
  63 using extensions::APIPermission;
  64 using web_modal::WebContentsModalDialogHost;
  65 using web_modal::WebContentsModalDialogManager;
  66
  67 namespace apps {
  68
  69 namespace {
  70
  71 const int kDefaultWidth = 512;
  72 const int kDefaultHeight = 384;
  73
  74 void SetConstraintProperty(const std::string& name,
  75                            int value,
  76                            base::DictionaryValue* bounds_properties) {
  77   if (value != SizeConstraints::kUnboundedSize)
  78     bounds_properties->SetInteger(name, value);
  79   else
  80     bounds_properties->Set(name, base::Value::CreateNullValue());
  81 }
  82
  83 void SetBoundsProperties(const gfx::Rect& bounds,
  84                          const gfx::Size& min_size,
  85                          const gfx::Size& max_size,
  86                          const std::string& bounds_name,
  87                          base::DictionaryValue* window_properties) {
  88   scoped_ptr<base::DictionaryValue> bounds_properties(
  89       new base::DictionaryValue());
  90
  91   bounds_properties->SetInteger("left", bounds.x());
  92   bounds_properties->SetInteger("top", bounds.y());
  93   bounds_properties->SetInteger("width", bounds.width());
  94   bounds_properties->SetInteger("height", bounds.height());
  95
  96   SetConstraintProperty("minWidth", min_size.width(), bounds_properties.get());
  97   SetConstraintProperty(
  98       "minHeight", min_size.height(), bounds_properties.get());
  99   SetConstraintProperty("maxWidth", max_size.width(), bounds_properties.get());
 100   SetConstraintProperty(
 101       "maxHeight", max_size.height(), bounds_properties.get());
 102
 103   window_properties->Set(bounds_name, bounds_properties.release());
 104 }
 105
 106 // Combines the constraints of the content and window, and returns constraints
 107 // for the window.
 108 gfx::Size GetCombinedWindowConstraints(const gfx::Size& window_constraints,
 109                                        const gfx::Size& content_constraints,
 110                                        const gfx::Insets& frame_insets) {
 111   gfx::Size combined_constraints(window_constraints);
 112   if (content_constraints.width() > 0) {
 113     combined_constraints.set_width(
 114         content_constraints.width() + frame_insets.width());
 115   }
 116   if (content_constraints.height() > 0) {
 117     combined_constraints.set_height(
 118         content_constraints.height() + frame_insets.height());
 119   }
 120   return combined_constraints;
 121 }
 122
 123 // Combines the constraints of the content and window, and returns constraints
 124 // for the content.
 125 gfx::Size GetCombinedContentConstraints(const gfx::Size& window_constraints,
 126                                         const gfx::Size& content_constraints,
 127                                         const gfx::Insets& frame_insets) {
 128   gfx::Size combined_constraints(content_constraints);
 129   if (window_constraints.width() > 0) {
 130     combined_constraints.set_width(
 131         std::max(0, window_constraints.width() - frame_insets.width()));
 132   }
 133   if (window_constraints.height() > 0) {
 134     combined_constraints.set_height(
 135         std::max(0, window_constraints.height() - frame_insets.height()));
 136   }
 137   return combined_constraints;
 138 }
 139
 140 }  // namespace
 141
 142 // AppWindow::BoundsSpecification
 143
 144 const int AppWindow::BoundsSpecification::kUnspecifiedPosition = INT_MIN;
 145
 146 AppWindow::BoundsSpecification::BoundsSpecification()
 147     : bounds(kUnspecifiedPosition, kUnspecifiedPosition, 0, 0) {}
 148
 149 AppWindow::BoundsSpecification::~BoundsSpecification() {}
 150
 151 void AppWindow::BoundsSpecification::ResetBounds() {
 152   bounds.SetRect(kUnspecifiedPosition, kUnspecifiedPosition, 0, 0);
 153 }
 154
 155 // AppWindow::CreateParams
 156
 157 AppWindow::CreateParams::CreateParams()
 158     : window_type(AppWindow::WINDOW_TYPE_DEFAULT),
 159       frame(AppWindow::FRAME_CHROME),
 160       has_frame_color(false),
 161       active_frame_color(SK_ColorBLACK),
 162       inactive_frame_color(SK_ColorBLACK),
 163       alpha_enabled(false),
 164       creator_process_id(0),
 165       state(ui::SHOW_STATE_DEFAULT),
 166       hidden(false),
 167       resizable(true),
 168       focused(true),
 169       always_on_top(false) {
 170 }
 171
 172 AppWindow::CreateParams::~CreateParams() {}
 173
 174 gfx::Rect AppWindow::CreateParams::GetInitialWindowBounds(
 175     const gfx::Insets& frame_insets) const {
 176   // Combine into a single window bounds.
 177   gfx::Rect combined_bounds(window_spec.bounds);
 178   if (content_spec.bounds.x() != BoundsSpecification::kUnspecifiedPosition)
 179     combined_bounds.set_x(content_spec.bounds.x() - frame_insets.left());
 180   if (content_spec.bounds.y() != BoundsSpecification::kUnspecifiedPosition)
 181     combined_bounds.set_y(content_spec.bounds.y() - frame_insets.top());
 182   if (content_spec.bounds.width() > 0) {
 183     combined_bounds.set_width(
 184         content_spec.bounds.width() + frame_insets.width());
 185   }
 186   if (content_spec.bounds.height() > 0) {
 187     combined_bounds.set_height(
 188         content_spec.bounds.height() + frame_insets.height());
 189   }
 190
 191   // Constrain the bounds.
 192   SizeConstraints constraints(
 193       GetCombinedWindowConstraints(
 194           window_spec.minimum_size, content_spec.minimum_size, frame_insets),
 195       GetCombinedWindowConstraints(
 196           window_spec.maximum_size, content_spec.maximum_size, frame_insets));
 197   combined_bounds.set_size(constraints.ClampSize(combined_bounds.size()));
 198
 199   return combined_bounds;
 200 }
 201
 202 gfx::Size AppWindow::CreateParams::GetContentMinimumSize(
 203     const gfx::Insets& frame_insets) const {
 204   return GetCombinedContentConstraints(window_spec.minimum_size,
 205                                        content_spec.minimum_size,
 206                                        frame_insets);
 207 }
 208
 209 gfx::Size AppWindow::CreateParams::GetContentMaximumSize(
 210     const gfx::Insets& frame_insets) const {
 211   return GetCombinedContentConstraints(window_spec.maximum_size,
 212                                        content_spec.maximum_size,
 213                                        frame_insets);
 214 }
 215
 216 gfx::Size AppWindow::CreateParams::GetWindowMinimumSize(
 217     const gfx::Insets& frame_insets) const {
 218   return GetCombinedWindowConstraints(window_spec.minimum_size,
 219                                       content_spec.minimum_size,
 220                                       frame_insets);
 221 }
 222
 223 gfx::Size AppWindow::CreateParams::GetWindowMaximumSize(
 224     const gfx::Insets& frame_insets) const {
 225   return GetCombinedWindowConstraints(window_spec.maximum_size,
 226                                       content_spec.maximum_size,
 227                                       frame_insets);
 228 }
 229
 230 // AppWindow
 231
 232 AppWindow::AppWindow(BrowserContext* context,
 233                      AppDelegate* app_delegate,
 234                      const extensions::Extension* extension)
 235     : browser_context_(context),
 236       extension_id_(extension->id()),
 237       window_type_(WINDOW_TYPE_DEFAULT),
 238       app_delegate_(app_delegate),
 239       image_loader_ptr_factory_(this),
 240       fullscreen_types_(FULLSCREEN_TYPE_NONE),
 241       show_on_first_paint_(false),
 242       first_paint_complete_(false),
 243       has_been_shown_(false),
 244       can_send_events_(false),
 245       is_hidden_(false),
 246       cached_always_on_top_(false),
 247       requested_alpha_enabled_(false) {
 248   extensions::ExtensionsBrowserClient* client =
 249       extensions::ExtensionsBrowserClient::Get();
 250   CHECK(!client->IsGuestSession(context) || context->IsOffTheRecord())
 251       << "Only off the record window may be opened in the guest mode.";
 252 }
 253
 254 void AppWindow::Init(const GURL& url,
 255                      AppWindowContents* app_window_contents,
 256                      const CreateParams& params) {
 257   // Initialize the render interface and web contents
 258   app_window_contents_.reset(app_window_contents);
 259   app_window_contents_->Initialize(browser_context(), url);
 260   WebContents* web_contents = app_window_contents_->GetWebContents();
 261   if (CommandLine::ForCurrentProcess()->HasSwitch(
 262           switches::kEnableAppsShowOnFirstPaint)) {
 263     content::WebContentsObserver::Observe(web_contents);
 264   }
 265   app_delegate_->InitWebContents(web_contents);
 266
 267   WebContentsModalDialogManager::CreateForWebContents(web_contents);
 268   // TODO(jamescook): Delegate out this creation.
 269   extensions::ChromeExtensionWebContentsObserver::CreateForWebContents(
 270       web_contents);
 271
 272   web_contents->SetDelegate(this);
 273   WebContentsModalDialogManager::FromWebContents(web_contents)
 274       ->SetDelegate(this);
 275   extensions::SetViewType(web_contents, extensions::VIEW_TYPE_APP_WINDOW);
 276
 277   // Initialize the window
 278   CreateParams new_params = LoadDefaults(params);
 279   window_type_ = new_params.window_type;
 280   window_key_ = new_params.window_key;
 281
 282   // Windows cannot be always-on-top in fullscreen mode for security reasons.
 283   cached_always_on_top_ = new_params.always_on_top;
 284   if (new_params.state == ui::SHOW_STATE_FULLSCREEN)
 285     new_params.always_on_top = false;
 286
 287   requested_alpha_enabled_ = new_params.alpha_enabled;
 288
 289   AppsClient* apps_client = AppsClient::Get();
 290   native_app_window_.reset(
 291       apps_client->CreateNativeAppWindow(this, new_params));
 292
 293   helper_.reset(new AppWebContentsHelper(
 294       browser_context_, extension_id_, web_contents, app_delegate_.get()));
 295
 296   popup_manager_.reset(
 297       new web_modal::PopupManager(GetWebContentsModalDialogHost()));
 298   popup_manager_->RegisterWith(web_contents);
 299
 300   // Prevent the browser process from shutting down while this window exists.
 301   apps_client->IncrementKeepAliveCount();
 302   UpdateExtensionAppIcon();
 303   AppWindowRegistry::Get(browser_context_)->AddAppWindow(this);
 304
 305   if (new_params.hidden) {
 306     // Although the window starts hidden by default, calling Hide() here
 307     // notifies observers of the window being hidden.
 308     Hide();
 309   } else {
 310     // Panels are not activated by default.
 311     Show(window_type_is_panel() || !new_params.focused ? SHOW_INACTIVE
 312                                                        : SHOW_ACTIVE);
 313   }
 314
 315   if (new_params.state == ui::SHOW_STATE_FULLSCREEN)
 316     Fullscreen();
 317   else if (new_params.state == ui::SHOW_STATE_MAXIMIZED)
 318     Maximize();
 319   else if (new_params.state == ui::SHOW_STATE_MINIMIZED)
 320     Minimize();
 321
 322   OnNativeWindowChanged();
 323
 324   // When the render view host is changed, the native window needs to know
 325   // about it in case it has any setup to do to make the renderer appear
 326   // properly. In particular, on Windows, the view's clickthrough region needs
 327   // to be set.
 328   extensions::ExtensionsBrowserClient* client =
 329       extensions::ExtensionsBrowserClient::Get();
 330   registrar_.Add(this,
 331                  extensions::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
 332                  content::Source<content::BrowserContext>(
 333                      client->GetOriginalContext(browser_context_)));
 334   // Close when the browser process is exiting.
 335   registrar_.Add(this,
 336                  chrome::NOTIFICATION_APP_TERMINATING,
 337                  content::NotificationService::AllSources());
 338   // Update the app menu if an ephemeral app becomes installed.
 339   registrar_.Add(
 340       this,
 341       extensions::NOTIFICATION_EXTENSION_WILL_BE_INSTALLED_DEPRECATED,
 342       content::Source<content::BrowserContext>(
 343           client->GetOriginalContext(browser_context_)));
 344
 345   app_window_contents_->LoadContents(new_params.creator_process_id);
 346
 347   if (CommandLine::ForCurrentProcess()->HasSwitch(
 348           switches::kEnableAppsShowOnFirstPaint)) {
 349     // We want to show the window only when the content has been painted. For
 350     // that to happen, we need to define a size for the content, otherwise the
 351     // layout will happen in a 0x0 area.
 352     gfx::Insets frame_insets = native_app_window_->GetFrameInsets();
 353     gfx::Rect initial_bounds = new_params.GetInitialWindowBounds(frame_insets);
 354     initial_bounds.Inset(frame_insets);
 355     apps::ResizeWebContents(web_contents, initial_bounds.size());
 356   }
 357 }
 358
 359 AppWindow::~AppWindow() {
 360   // Unregister now to prevent getting NOTIFICATION_APP_TERMINATING if we're the
 361   // last window open.
 362   registrar_.RemoveAll();
 363
 364   // Remove shutdown prevention.
 365   AppsClient::Get()->DecrementKeepAliveCount();
 366 }
 367
 368 void AppWindow::RequestMediaAccessPermission(
 369     content::WebContents* web_contents,
 370     const content::MediaStreamRequest& request,
 371     const content::MediaResponseCallback& callback) {
 372   DCHECK_EQ(AppWindow::web_contents(), web_contents);
 373   helper_->RequestMediaAccessPermission(request, callback);
 374 }
 375
 376 WebContents* AppWindow::OpenURLFromTab(WebContents* source,
 377                                        const content::OpenURLParams& params) {
 378   DCHECK_EQ(web_contents(), source);
 379   return helper_->OpenURLFromTab(params);
 380 }
 381
 382 void AppWindow::AddNewContents(WebContents* source,
 383                                WebContents* new_contents,
 384                                WindowOpenDisposition disposition,
 385                                const gfx::Rect& initial_pos,
 386                                bool user_gesture,
 387                                bool* was_blocked) {
 388   DCHECK(new_contents->GetBrowserContext() == browser_context_);
 389   app_delegate_->AddNewContents(browser_context_,
 390                                 new_contents,
 391                                 disposition,
 392                                 initial_pos,
 393                                 user_gesture,
 394                                 was_blocked);
 395 }
 396
 397 bool AppWindow::PreHandleKeyboardEvent(
 398     content::WebContents* source,
 399     const content::NativeWebKeyboardEvent& event,
 400     bool* is_keyboard_shortcut) {
 401   const extensions::Extension* extension = GetExtension();
 402   if (!extension)
 403     return false;
 404
 405   // Here, we can handle a key event before the content gets it. When we are
 406   // fullscreen and it is not forced, we want to allow the user to leave
 407   // when ESC is pressed.
 408   // However, if the application has the "overrideEscFullscreen" permission, we
 409   // should let it override that behavior.
 410   // ::HandleKeyboardEvent() will only be called if the KeyEvent's default
 411   // action is not prevented.
 412   // Thus, we should handle the KeyEvent here only if the permission is not set.
 413   if (event.windowsKeyCode == ui::VKEY_ESCAPE && IsFullscreen() &&
 414       !IsForcedFullscreen() &&
 415       !extension->permissions_data()->HasAPIPermission(
 416           APIPermission::kOverrideEscFullscreen)) {
 417     Restore();
 418     return true;
 419   }
 420
 421   return false;
 422 }
 423
 424 void AppWindow::HandleKeyboardEvent(
 425     WebContents* source,
 426     const content::NativeWebKeyboardEvent& event) {
 427   // If the window is currently fullscreen and not forced, ESC should leave
 428   // fullscreen.  If this code is being called for ESC, that means that the
 429   // KeyEvent's default behavior was not prevented by the content.
 430   if (event.windowsKeyCode == ui::VKEY_ESCAPE && IsFullscreen() &&
 431       !IsForcedFullscreen()) {
 432     Restore();
 433     return;
 434   }
 435
 436   native_app_window_->HandleKeyboardEvent(event);
 437 }
 438
 439 void AppWindow::RequestToLockMouse(WebContents* web_contents,
 440                                    bool user_gesture,
 441                                    bool last_unlocked_by_target) {
 442   DCHECK_EQ(AppWindow::web_contents(), web_contents);
 443   helper_->RequestToLockMouse();
 444 }
 445
 446 bool AppWindow::PreHandleGestureEvent(WebContents* source,
 447                                       const blink::WebGestureEvent& event) {
 448   return AppWebContentsHelper::ShouldSuppressGestureEvent(event);
 449 }
 450
 451 void AppWindow::DidFirstVisuallyNonEmptyPaint() {
 452   first_paint_complete_ = true;
 453   if (show_on_first_paint_) {
 454     DCHECK(delayed_show_type_ == SHOW_ACTIVE ||
 455            delayed_show_type_ == SHOW_INACTIVE);
 456     Show(delayed_show_type_);
 457   }
 458 }
 459
 460 void AppWindow::OnNativeClose() {
 461   AppWindowRegistry::Get(browser_context_)->RemoveAppWindow(this);
 462   if (app_window_contents_) {
 463     WebContents* web_contents = app_window_contents_->GetWebContents();
 464     WebContentsModalDialogManager::FromWebContents(web_contents)
 465         ->SetDelegate(NULL);
 466     app_window_contents_->NativeWindowClosed();
 467   }
 468   delete this;
 469 }
 470
 471 void AppWindow::OnNativeWindowChanged() {
 472   SaveWindowPosition();
 473
 474 #if defined(OS_WIN)
 475   if (native_app_window_ && cached_always_on_top_ && !IsFullscreen() &&
 476       !native_app_window_->IsMaximized() &&
 477       !native_app_window_->IsMinimized()) {
 478     UpdateNativeAlwaysOnTop();
 479   }
 480 #endif
 481
 482   if (app_window_contents_ && native_app_window_)
 483     app_window_contents_->NativeWindowChanged(native_app_window_.get());
 484 }
 485
 486 void AppWindow::OnNativeWindowActivated() {
 487   AppWindowRegistry::Get(browser_context_)->AppWindowActivated(this);
 488 }
 489
 490 content::WebContents* AppWindow::web_contents() const {
 491   return app_window_contents_->GetWebContents();
 492 }
 493
 494 const extensions::Extension* AppWindow::GetExtension() const {
 495   return extensions::ExtensionRegistry::Get(browser_context_)
 496       ->enabled_extensions()
 497       .GetByID(extension_id_);
 498 }
 499
 500 NativeAppWindow* AppWindow::GetBaseWindow() { return native_app_window_.get(); }
 501
 502 gfx::NativeWindow AppWindow::GetNativeWindow() {
 503   return GetBaseWindow()->GetNativeWindow();
 504 }
 505
 506 gfx::Rect AppWindow::GetClientBounds() const {
 507   gfx::Rect bounds = native_app_window_->GetBounds();
 508   bounds.Inset(native_app_window_->GetFrameInsets());
 509   return bounds;
 510 }
 511
 512 base::string16 AppWindow::GetTitle() const {
 513   const extensions::Extension* extension = GetExtension();
 514   if (!extension)
 515     return base::string16();
 516
 517   // WebContents::GetTitle() will return the page's URL if there's no <title>
 518   // specified. However, we'd prefer to show the name of the extension in that
 519   // case, so we directly inspect the NavigationEntry's title.
 520   base::string16 title;
 521   if (!web_contents() || !web_contents()->GetController().GetActiveEntry() ||
 522       web_contents()->GetController().GetActiveEntry()->GetTitle().empty()) {
 523     title = base::UTF8ToUTF16(extension->name());
 524   } else {
 525     title = web_contents()->GetTitle();
 526   }
 527   base::RemoveChars(title, base::ASCIIToUTF16("\n"), &title);
 528   return title;
 529 }
 530
 531 void AppWindow::SetAppIconUrl(const GURL& url) {
 532   // If the same url is being used for the badge, ignore it.
 533   if (url == badge_icon_url_)
 534     return;
 535
 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   app_icon_image_.reset();
 541
 542   app_icon_url_ = url;
 543   web_contents()->DownloadImage(
 544       url,
 545       true,  // is a favicon
 546       0,     // no maximum size
 547       base::Bind(&AppWindow::DidDownloadFavicon,
 548                  image_loader_ptr_factory_.GetWeakPtr()));
 549 }
 550
 551 void AppWindow::SetBadgeIconUrl(const GURL& url) {
 552   // Avoid using any previous icons that were being downloaded.
 553   image_loader_ptr_factory_.InvalidateWeakPtrs();
 554
 555   // Reset |app_icon_image_| to abort pending image load (if any).
 556   badge_icon_image_.reset();
 557
 558   badge_icon_url_ = url;
 559   web_contents()->DownloadImage(
 560       url,
 561       true,  // is a favicon
 562       0,     // no maximum size
 563       base::Bind(&AppWindow::DidDownloadFavicon,
 564                  image_loader_ptr_factory_.GetWeakPtr()));
 565 }
 566
 567 void AppWindow::ClearBadge() {
 568   badge_icon_image_.reset();
 569   badge_icon_url_ = GURL();
 570   UpdateBadgeIcon(gfx::Image());
 571 }
 572
 573 void AppWindow::UpdateShape(scoped_ptr<SkRegion> region) {
 574   native_app_window_->UpdateShape(region.Pass());
 575 }
 576
 577 void AppWindow::UpdateDraggableRegions(
 578     const std::vector<extensions::DraggableRegion>& regions) {
 579   native_app_window_->UpdateDraggableRegions(regions);
 580 }
 581
 582 void AppWindow::UpdateAppIcon(const gfx::Image& image) {
 583   if (image.IsEmpty())
 584     return;
 585   app_icon_ = image;
 586   native_app_window_->UpdateWindowIcon();
 587   AppWindowRegistry::Get(browser_context_)->AppWindowIconChanged(this);
 588 }
 589
 590 void AppWindow::SetFullscreen(FullscreenType type, bool enable) {
 591   DCHECK_NE(FULLSCREEN_TYPE_NONE, type);
 592
 593   if (enable) {
 594 #if !defined(OS_MACOSX)
 595     // Do not enter fullscreen mode if disallowed by pref.
 596     // TODO(bartfab): Add a test once it becomes possible to simulate a user
 597     // gesture. http://crbug.com/174178
 598     if (type != FULLSCREEN_TYPE_FORCED) {
 599       PrefService* prefs =
 600           extensions::ExtensionsBrowserClient::Get()->GetPrefServiceForContext(
 601               browser_context());
 602       if (!prefs->GetBoolean(prefs::kAppFullscreenAllowed))
 603         return;
 604     }
 605 #endif
 606     fullscreen_types_ |= type;
 607   } else {
 608     fullscreen_types_ &= ~type;
 609   }
 610   SetNativeWindowFullscreen();
 611 }
 612
 613 bool AppWindow::IsFullscreen() const {
 614   return fullscreen_types_ != FULLSCREEN_TYPE_NONE;
 615 }
 616
 617 bool AppWindow::IsForcedFullscreen() const {
 618   return (fullscreen_types_ & FULLSCREEN_TYPE_FORCED) != 0;
 619 }
 620
 621 bool AppWindow::IsHtmlApiFullscreen() const {
 622   return (fullscreen_types_ & FULLSCREEN_TYPE_HTML_API) != 0;
 623 }
 624
 625 void AppWindow::Fullscreen() {
 626   SetFullscreen(FULLSCREEN_TYPE_WINDOW_API, true);
 627 }
 628
 629 void AppWindow::Maximize() { GetBaseWindow()->Maximize(); }
 630
 631 void AppWindow::Minimize() { GetBaseWindow()->Minimize(); }
 632
 633 void AppWindow::Restore() {
 634   if (IsFullscreen()) {
 635     fullscreen_types_ = FULLSCREEN_TYPE_NONE;
 636     SetNativeWindowFullscreen();
 637   } else {
 638     GetBaseWindow()->Restore();
 639   }
 640 }
 641
 642 void AppWindow::OSFullscreen() {
 643   SetFullscreen(FULLSCREEN_TYPE_OS, true);
 644 }
 645
 646 void AppWindow::ForcedFullscreen() {
 647   SetFullscreen(FULLSCREEN_TYPE_FORCED, true);
 648 }
 649
 650 void AppWindow::SetContentSizeConstraints(const gfx::Size& min_size,
 651                                           const gfx::Size& max_size) {
 652   SizeConstraints constraints(min_size, max_size);
 653   native_app_window_->SetContentSizeConstraints(constraints.GetMinimumSize(),
 654                                                 constraints.GetMaximumSize());
 655
 656   gfx::Rect bounds = GetClientBounds();
 657   gfx::Size constrained_size = constraints.ClampSize(bounds.size());
 658   if (bounds.size() != constrained_size) {
 659     bounds.set_size(constrained_size);
 660     bounds.Inset(-native_app_window_->GetFrameInsets());
 661     native_app_window_->SetBounds(bounds);
 662   }
 663   OnNativeWindowChanged();
 664 }
 665
 666 void AppWindow::Show(ShowType show_type) {
 667   is_hidden_ = false;
 668
 669   if (CommandLine::ForCurrentProcess()->HasSwitch(
 670           switches::kEnableAppsShowOnFirstPaint)) {
 671     show_on_first_paint_ = true;
 672
 673     if (!first_paint_complete_) {
 674       delayed_show_type_ = show_type;
 675       return;
 676     }
 677   }
 678
 679   switch (show_type) {
 680     case SHOW_ACTIVE:
 681       GetBaseWindow()->Show();
 682       break;
 683     case SHOW_INACTIVE:
 684       GetBaseWindow()->ShowInactive();
 685       break;
 686   }
 687   AppWindowRegistry::Get(browser_context_)->AppWindowShown(this);
 688
 689   has_been_shown_ = true;
 690   SendOnWindowShownIfShown();
 691 }
 692
 693 void AppWindow::Hide() {
 694   // This is there to prevent race conditions with Hide() being called before
 695   // there was a non-empty paint. It should have no effect in a non-racy
 696   // scenario where the application is hiding then showing a window: the second
 697   // show will not be delayed.
 698   is_hidden_ = true;
 699   show_on_first_paint_ = false;
 700   GetBaseWindow()->Hide();
 701   AppWindowRegistry::Get(browser_context_)->AppWindowHidden(this);
 702 }
 703
 704 void AppWindow::SetAlwaysOnTop(bool always_on_top) {
 705   if (cached_always_on_top_ == always_on_top)
 706     return;
 707
 708   cached_always_on_top_ = always_on_top;
 709
 710   // As a security measure, do not allow fullscreen windows or windows that
 711   // overlap the taskbar to be on top. The property will be applied when the
 712   // window exits fullscreen and moves away from the taskbar.
 713   if (!IsFullscreen() && !IntersectsWithTaskbar())
 714     native_app_window_->SetAlwaysOnTop(always_on_top);
 715
 716   OnNativeWindowChanged();
 717 }
 718
 719 bool AppWindow::IsAlwaysOnTop() const { return cached_always_on_top_; }
 720
 721 void AppWindow::WindowEventsReady() {
 722   can_send_events_ = true;
 723   SendOnWindowShownIfShown();
 724 }
 725
 726 void AppWindow::GetSerializedState(base::DictionaryValue* properties) const {
 727   DCHECK(properties);
 728
 729   properties->SetBoolean("fullscreen",
 730                          native_app_window_->IsFullscreenOrPending());
 731   properties->SetBoolean("minimized", native_app_window_->IsMinimized());
 732   properties->SetBoolean("maximized", native_app_window_->IsMaximized());
 733   properties->SetBoolean("alwaysOnTop", IsAlwaysOnTop());
 734   properties->SetBoolean("hasFrameColor", native_app_window_->HasFrameColor());
 735   properties->SetBoolean(
 736       "alphaEnabled",
 737       requested_alpha_enabled_ && native_app_window_->CanHaveAlphaEnabled());
 738
 739   // These properties are undocumented and are to enable testing. Alpha is
 740   // removed to
 741   // make the values easier to check.
 742   SkColor transparent_white = ~SK_ColorBLACK;
 743   properties->SetInteger(
 744       "activeFrameColor",
 745       native_app_window_->ActiveFrameColor() & transparent_white);
 746   properties->SetInteger(
 747       "inactiveFrameColor",
 748       native_app_window_->InactiveFrameColor() & transparent_white);
 749
 750   gfx::Rect content_bounds = GetClientBounds();
 751   gfx::Size content_min_size = native_app_window_->GetContentMinimumSize();
 752   gfx::Size content_max_size = native_app_window_->GetContentMaximumSize();
 753   SetBoundsProperties(content_bounds,
 754                       content_min_size,
 755                       content_max_size,
 756                       "innerBounds",
 757                       properties);
 758
 759   gfx::Insets frame_insets = native_app_window_->GetFrameInsets();
 760   gfx::Rect frame_bounds = native_app_window_->GetBounds();
 761   gfx::Size frame_min_size =
 762       SizeConstraints::AddFrameToConstraints(content_min_size, frame_insets);
 763   gfx::Size frame_max_size =
 764       SizeConstraints::AddFrameToConstraints(content_max_size, frame_insets);
 765   SetBoundsProperties(frame_bounds,
 766                       frame_min_size,
 767                       frame_max_size,
 768                       "outerBounds",
 769                       properties);
 770 }
 771
 772 //------------------------------------------------------------------------------
 773 // Private methods
 774
 775 void AppWindow::UpdateBadgeIcon(const gfx::Image& image) {
 776   badge_icon_ = image;
 777   native_app_window_->UpdateBadgeIcon();
 778 }
 779
 780 void AppWindow::DidDownloadFavicon(
 781     int id,
 782     int http_status_code,
 783     const GURL& image_url,
 784     const std::vector<SkBitmap>& bitmaps,
 785     const std::vector<gfx::Size>& original_bitmap_sizes) {
 786   if ((image_url != app_icon_url_ && image_url != badge_icon_url_) ||
 787       bitmaps.empty()) {
 788     return;
 789   }
 790
 791   // Bitmaps are ordered largest to smallest. Choose the smallest bitmap
 792   // whose height >= the preferred size.
 793   int largest_index = 0;
 794   for (size_t i = 1; i < bitmaps.size(); ++i) {
 795     if (bitmaps[i].height() < app_delegate_->PreferredIconSize())
 796       break;
 797     largest_index = i;
 798   }
 799   const SkBitmap& largest = bitmaps[largest_index];
 800   if (image_url == app_icon_url_) {
 801     UpdateAppIcon(gfx::Image::CreateFrom1xBitmap(largest));
 802     return;
 803   }
 804
 805   UpdateBadgeIcon(gfx::Image::CreateFrom1xBitmap(largest));
 806 }
 807
 808 void AppWindow::OnExtensionIconImageChanged(extensions::IconImage* image) {
 809   DCHECK_EQ(app_icon_image_.get(), image);
 810
 811   UpdateAppIcon(gfx::Image(app_icon_image_->image_skia()));
 812 }
 813
 814 void AppWindow::UpdateExtensionAppIcon() {
 815   // Avoid using any previous app icons were being downloaded.
 816   image_loader_ptr_factory_.InvalidateWeakPtrs();
 817
 818   const gfx::ImageSkia& default_icon =
 819       *ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
 820           IDR_APP_DEFAULT_ICON);
 821
 822   const extensions::Extension* extension = GetExtension();
 823   if (!extension)
 824     return;
 825
 826   app_icon_image_.reset(
 827       new extensions::IconImage(browser_context(),
 828                                 extension,
 829                                 extensions::IconsInfo::GetIcons(extension),
 830                                 app_delegate_->PreferredIconSize(),
 831                                 default_icon,
 832                                 this));
 833
 834   // Triggers actual image loading with 1x resources. The 2x resource will
 835   // be handled by IconImage class when requested.
 836   app_icon_image_->image_skia().GetRepresentation(1.0f);
 837 }
 838
 839 void AppWindow::SetNativeWindowFullscreen() {
 840   native_app_window_->SetFullscreen(fullscreen_types_);
 841
 842   if (cached_always_on_top_)
 843     UpdateNativeAlwaysOnTop();
 844 }
 845
 846 bool AppWindow::IntersectsWithTaskbar() const {
 847 #if defined(OS_WIN)
 848   gfx::Screen* screen = gfx::Screen::GetNativeScreen();
 849   gfx::Rect window_bounds = native_app_window_->GetRestoredBounds();
 850   std::vector<gfx::Display> displays = screen->GetAllDisplays();
 851
 852   for (std::vector<gfx::Display>::const_iterator it = displays.begin();
 853        it != displays.end();
 854        ++it) {
 855     gfx::Rect taskbar_bounds = it->bounds();
 856     taskbar_bounds.Subtract(it->work_area());
 857     if (taskbar_bounds.IsEmpty())
 858       continue;
 859
 860     if (window_bounds.Intersects(taskbar_bounds))
 861       return true;
 862   }
 863 #endif
 864
 865   return false;
 866 }
 867
 868 void AppWindow::UpdateNativeAlwaysOnTop() {
 869   DCHECK(cached_always_on_top_);
 870   bool is_on_top = native_app_window_->IsAlwaysOnTop();
 871   bool fullscreen = IsFullscreen();
 872   bool intersects_taskbar = IntersectsWithTaskbar();
 873
 874   if (is_on_top && (fullscreen || intersects_taskbar)) {
 875     // When entering fullscreen or overlapping the taskbar, ensure windows are
 876     // not always-on-top.
 877     native_app_window_->SetAlwaysOnTop(false);
 878   } else if (!is_on_top && !fullscreen && !intersects_taskbar) {
 879     // When exiting fullscreen and moving away from the taskbar, reinstate
 880     // always-on-top.
 881     native_app_window_->SetAlwaysOnTop(true);
 882   }
 883 }
 884
 885 void AppWindow::SendOnWindowShownIfShown() {
 886   if (!can_send_events_ || !has_been_shown_)
 887     return;
 888
 889   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kTestType)) {
 890     app_window_contents_->DispatchWindowShownForTests();
 891   }
 892 }
 893
 894 void AppWindow::CloseContents(WebContents* contents) {
 895   native_app_window_->Close();
 896 }
 897
 898 bool AppWindow::ShouldSuppressDialogs() { return true; }
 899
 900 content::ColorChooser* AppWindow::OpenColorChooser(
 901     WebContents* web_contents,
 902     SkColor initial_color,
 903     const std::vector<content::ColorSuggestion>& suggestions) {
 904   return app_delegate_->ShowColorChooser(web_contents, initial_color);
 905 }
 906
 907 void AppWindow::RunFileChooser(WebContents* tab,
 908                                const content::FileChooserParams& params) {
 909   if (window_type_is_panel()) {
 910     // Panels can't host a file dialog, abort. TODO(stevenjb): allow file
 911     // dialogs to be unhosted but still close with the owning web contents.
 912     // crbug.com/172502.
 913     LOG(WARNING) << "File dialog opened by panel.";
 914     return;
 915   }
 916
 917   app_delegate_->RunFileChooser(tab, params);
 918 }
 919
 920 bool AppWindow::IsPopupOrPanel(const WebContents* source) const { return true; }
 921
 922 void AppWindow::MoveContents(WebContents* source, const gfx::Rect& pos) {
 923   native_app_window_->SetBounds(pos);
 924 }
 925
 926 void AppWindow::NavigationStateChanged(const content::WebContents* source,
 927                                        content::InvalidateTypes changed_flags) {
 928   if (changed_flags & content::INVALIDATE_TYPE_TITLE)
 929     native_app_window_->UpdateWindowTitle();
 930   else if (changed_flags & content::INVALIDATE_TYPE_TAB)
 931     native_app_window_->UpdateWindowIcon();
 932 }
 933
 934 void AppWindow::ToggleFullscreenModeForTab(content::WebContents* source,
 935                                            bool enter_fullscreen) {
 936   const extensions::Extension* extension = GetExtension();
 937   if (!extension)
 938     return;
 939
 940   if (!IsExtensionWithPermissionOrSuggestInConsole(
 941           APIPermission::kFullscreen, extension, source->GetRenderViewHost())) {
 942     return;
 943   }
 944
 945   SetFullscreen(FULLSCREEN_TYPE_HTML_API, enter_fullscreen);
 946 }
 947
 948 bool AppWindow::IsFullscreenForTabOrPending(const content::WebContents* source)
 949     const {
 950   return IsHtmlApiFullscreen();
 951 }
 952
 953 void AppWindow::Observe(int type,
 954                         const content::NotificationSource& source,
 955                         const content::NotificationDetails& details) {
 956   switch (type) {
 957     case extensions::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED: {
 958       const extensions::Extension* unloaded_extension =
 959           content::Details<extensions::UnloadedExtensionInfo>(details)
 960               ->extension;
 961       if (extension_id_ == unloaded_extension->id())
 962         native_app_window_->Close();
 963       break;
 964     }
 965     case extensions::NOTIFICATION_EXTENSION_WILL_BE_INSTALLED_DEPRECATED: {
 966       const extensions::Extension* installed_extension =
 967           content::Details<const extensions::InstalledExtensionInfo>(details)
 968               ->extension;
 969       DCHECK(installed_extension);
 970       if (installed_extension->id() == extension_id())
 971         native_app_window_->UpdateShelfMenu();
 972       break;
 973     }
 974     case chrome::NOTIFICATION_APP_TERMINATING:
 975       native_app_window_->Close();
 976       break;
 977     default:
 978       NOTREACHED() << "Received unexpected notification";
 979   }
 980 }
 981
 982 void AppWindow::SetWebContentsBlocked(content::WebContents* web_contents,
 983                                       bool blocked) {
 984   app_delegate_->SetWebContentsBlocked(web_contents, blocked);
 985 }
 986
 987 bool AppWindow::IsWebContentsVisible(content::WebContents* web_contents) {
 988   return app_delegate_->IsWebContentsVisible(web_contents);
 989 }
 990
 991 WebContentsModalDialogHost* AppWindow::GetWebContentsModalDialogHost() {
 992   return native_app_window_.get();
 993 }
 994
 995 void AppWindow::SaveWindowPosition() {
 996   if (window_key_.empty())
 997     return;
 998   if (!native_app_window_)
 999     return;
1000
1001   AppWindowGeometryCache* cache =
1002       AppWindowGeometryCache::Get(browser_context());
1003
1004   gfx::Rect bounds = native_app_window_->GetRestoredBounds();
1005   gfx::Rect screen_bounds =
1006       gfx::Screen::GetNativeScreen()->GetDisplayMatching(bounds).work_area();
1007   ui::WindowShowState window_state = native_app_window_->GetRestoredState();
1008   cache->SaveGeometry(
1009       extension_id(), window_key_, bounds, screen_bounds, window_state);
1010 }
1011
1012 void AppWindow::AdjustBoundsToBeVisibleOnScreen(
1013     const gfx::Rect& cached_bounds,
1014     const gfx::Rect& cached_screen_bounds,
1015     const gfx::Rect& current_screen_bounds,
1016     const gfx::Size& minimum_size,
1017     gfx::Rect* bounds) const {
1018   *bounds = cached_bounds;
1019
1020   // Reposition and resize the bounds if the cached_screen_bounds is different
1021   // from the current screen bounds and the current screen bounds doesn't
1022   // completely contain the bounds.
1023   if (cached_screen_bounds != current_screen_bounds &&
1024       !current_screen_bounds.Contains(cached_bounds)) {
1025     bounds->set_width(
1026         std::max(minimum_size.width(),
1027                  std::min(bounds->width(), current_screen_bounds.width())));
1028     bounds->set_height(
1029         std::max(minimum_size.height(),
1030                  std::min(bounds->height(), current_screen_bounds.height())));
1031     bounds->set_x(
1032         std::max(current_screen_bounds.x(),
1033                  std::min(bounds->x(),
1034                           current_screen_bounds.right() - bounds->width())));
1035     bounds->set_y(
1036         std::max(current_screen_bounds.y(),
1037                  std::min(bounds->y(),
1038                           current_screen_bounds.bottom() - bounds->height())));
1039   }
1040 }
1041
1042 AppWindow::CreateParams AppWindow::LoadDefaults(CreateParams params)
1043     const {
1044   // Ensure width and height are specified.
1045   if (params.content_spec.bounds.width() == 0 &&
1046       params.window_spec.bounds.width() == 0) {
1047     params.content_spec.bounds.set_width(kDefaultWidth);
1048   }
1049   if (params.content_spec.bounds.height() == 0 &&
1050       params.window_spec.bounds.height() == 0) {
1051     params.content_spec.bounds.set_height(kDefaultHeight);
1052   }
1053
1054   // If left and top are left undefined, the native app window will center
1055   // the window on the main screen in a platform-defined manner.
1056
1057   // Load cached state if it exists.
1058   if (!params.window_key.empty()) {
1059     AppWindowGeometryCache* cache =
1060         AppWindowGeometryCache::Get(browser_context());
1061
1062     gfx::Rect cached_bounds;
1063     gfx::Rect cached_screen_bounds;
1064     ui::WindowShowState cached_state = ui::SHOW_STATE_DEFAULT;
1065     if (cache->GetGeometry(extension_id(),
1066                            params.window_key,
1067                            &cached_bounds,
1068                            &cached_screen_bounds,
1069                            &cached_state)) {
1070       // App window has cached screen bounds, make sure it fits on screen in
1071       // case the screen resolution changed.
1072       gfx::Screen* screen = gfx::Screen::GetNativeScreen();
1073       gfx::Display display = screen->GetDisplayMatching(cached_bounds);
1074       gfx::Rect current_screen_bounds = display.work_area();
1075       SizeConstraints constraints(params.GetWindowMinimumSize(gfx::Insets()),
1076                                   params.GetWindowMaximumSize(gfx::Insets()));
1077       AdjustBoundsToBeVisibleOnScreen(cached_bounds,
1078                                       cached_screen_bounds,
1079                                       current_screen_bounds,
1080                                       constraints.GetMinimumSize(),
1081                                       &params.window_spec.bounds);
1082       params.state = cached_state;
1083
1084       // Since we are restoring a cached state, reset the content bounds spec to
1085       // ensure it is not used.
1086       params.content_spec.ResetBounds();
1087     }
1088   }
1089
1090   return params;
1091 }
1092
1093 // static
1094 SkRegion* AppWindow::RawDraggableRegionsToSkRegion(
1095     const std::vector<extensions::DraggableRegion>& regions) {
1096   SkRegion* sk_region = new SkRegion;
1097   for (std::vector<extensions::DraggableRegion>::const_iterator iter =
1098            regions.begin();
1099        iter != regions.end();
1100        ++iter) {
1101     const extensions::DraggableRegion& region = *iter;
1102     sk_region->op(
1103         region.bounds.x(),
1104         region.bounds.y(),
1105         region.bounds.right(),
1106         region.bounds.bottom(),
1107         region.draggable ? SkRegion::kUnion_Op : SkRegion::kDifference_Op);
1108   }
1109   return sk_region;
1110 }
1111
1112 }  // namespace apps