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
   9 #include "apps/app_window_geometry_cache.h"
  10 #include "apps/app_window_registry.h"
  11 #include "apps/apps_client.h"
  12 #include "apps/size_constraints.h"
  13 #include "apps/ui/native_app_window.h"
  14 #include "apps/ui/web_contents_sizer.h"
  15 #include "base/command_line.h"
  16 #include "base/strings/string_util.h"
  17 #include "base/strings/utf_string_conversions.h"
  18 #include "base/values.h"
  19 #include "chrome/browser/chrome_notification_types.h"
  20 #include "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
  21 #include "chrome/browser/extensions/suggest_permission_util.h"
  22 #include "chrome/common/chrome_switches.h"
  23 #include "components/web_modal/web_contents_modal_dialog_manager.h"
  24 #include "content/public/browser/browser_context.h"
  25 #include "content/public/browser/invalidate_type.h"
  26 #include "content/public/browser/navigation_entry.h"
  27 #include "content/public/browser/notification_details.h"
  28 #include "content/public/browser/notification_service.h"
  29 #include "content/public/browser/notification_source.h"
  30 #include "content/public/browser/notification_types.h"
  31 #include "content/public/browser/render_view_host.h"
  32 #include "content/public/browser/resource_dispatcher_host.h"
  33 #include "content/public/browser/web_contents.h"
  34 #include "content/public/common/content_switches.h"
  35 #include "content/public/common/media_stream_request.h"
  36 #include "extensions/browser/extension_registry.h"
  37 #include "extensions/browser/extension_system.h"
  38 #include "extensions/browser/extensions_browser_client.h"
  39 #include "extensions/browser/process_manager.h"
  40 #include "extensions/browser/view_type_utils.h"
  41 #include "extensions/common/extension.h"
  42 #include "extensions/common/extension_messages.h"
  43 #include "extensions/common/manifest_handlers/icons_handler.h"
  44 #include "extensions/common/permissions/permissions_data.h"
  45 #include "grit/theme_resources.h"
  46 #include "third_party/skia/include/core/SkRegion.h"
  47 #include "ui/base/resource/resource_bundle.h"
  48 #include "ui/gfx/screen.h"
  49
  50 #if !defined(OS_MACOSX)
  51 #include "apps/pref_names.h"
  52 #include "base/prefs/pref_service.h"
  53 #endif
  54
  55 using content::BrowserContext;
  56 using content::ConsoleMessageLevel;
  57 using content::WebContents;
  58 using extensions::APIPermission;
  59 using web_modal::WebContentsModalDialogHost;
  60 using web_modal::WebContentsModalDialogManager;
  61
  62 namespace apps {
  63
  64 namespace {
  65
  66 const int kDefaultWidth = 512;
  67 const int kDefaultHeight = 384;
  68
  69 bool IsFullscreen(int fullscreen_types) {
  70   return fullscreen_types != apps::AppWindow::FULLSCREEN_TYPE_NONE;
  71 }
  72
  73 void SetConstraintProperty(const std::string& name,
  74                            int value,
  75                            base::DictionaryValue* bounds_properties) {
  76   if (value != SizeConstraints::kUnboundedSize)
  77     bounds_properties->SetInteger(name, value);
  78   else
  79     bounds_properties->Set(name, base::Value::CreateNullValue());
  80 }
  81
  82 void SetBoundsProperties(const gfx::Rect& bounds,
  83                          const gfx::Size& min_size,
  84                          const gfx::Size& max_size,
  85                          const std::string& bounds_name,
  86                          base::DictionaryValue* window_properties) {
  87   scoped_ptr<base::DictionaryValue> bounds_properties(
  88       new base::DictionaryValue());
  89
  90   bounds_properties->SetInteger("left", bounds.x());
  91   bounds_properties->SetInteger("top", bounds.y());
  92   bounds_properties->SetInteger("width", bounds.width());
  93   bounds_properties->SetInteger("height", bounds.height());
  94
  95   SetConstraintProperty("minWidth", min_size.width(), bounds_properties.get());
  96   SetConstraintProperty(
  97       "minHeight", min_size.height(), bounds_properties.get());
  98   SetConstraintProperty("maxWidth", max_size.width(), bounds_properties.get());
  99   SetConstraintProperty(
 100       "maxHeight", max_size.height(), bounds_properties.get());
 101
 102   window_properties->Set(bounds_name, bounds_properties.release());
 103 }
 104
 105 // Combines the constraints of the content and window, and returns constraints
 106 // for the window.
 107 gfx::Size GetCombinedWindowConstraints(const gfx::Size& window_constraints,
 108                                        const gfx::Size& content_constraints,
 109                                        const gfx::Insets& frame_insets) {
 110   gfx::Size combined_constraints(window_constraints);
 111   if (content_constraints.width() > 0) {
 112     combined_constraints.set_width(
 113         content_constraints.width() + frame_insets.width());
 114   }
 115   if (content_constraints.height() > 0) {
 116     combined_constraints.set_height(
 117         content_constraints.height() + frame_insets.height());
 118   }
 119   return combined_constraints;
 120 }
 121
 122 // Combines the constraints of the content and window, and returns constraints
 123 // for the content.
 124 gfx::Size GetCombinedContentConstraints(const gfx::Size& window_constraints,
 125                                         const gfx::Size& content_constraints,
 126                                         const gfx::Insets& frame_insets) {
 127   gfx::Size combined_constraints(content_constraints);
 128   if (window_constraints.width() > 0) {
 129     combined_constraints.set_width(
 130         std::max(0, window_constraints.width() - frame_insets.width()));
 131   }
 132   if (window_constraints.height() > 0) {
 133     combined_constraints.set_height(
 134         std::max(0, window_constraints.height() - frame_insets.height()));
 135   }
 136   return combined_constraints;
 137 }
 138
 139 }  // namespace
 140
 141 // AppWindow::BoundsSpecification
 142
 143 const int AppWindow::BoundsSpecification::kUnspecifiedPosition = INT_MIN;
 144
 145 AppWindow::BoundsSpecification::BoundsSpecification()
 146     : bounds(kUnspecifiedPosition, kUnspecifiedPosition, 0, 0) {}
 147
 148 AppWindow::BoundsSpecification::~BoundsSpecification() {}
 149
 150 void AppWindow::BoundsSpecification::ResetBounds() {
 151   bounds.SetRect(kUnspecifiedPosition, kUnspecifiedPosition, 0, 0);
 152 }
 153
 154 // AppWindow::CreateParams
 155
 156 AppWindow::CreateParams::CreateParams()
 157     : window_type(AppWindow::WINDOW_TYPE_DEFAULT),
 158       frame(AppWindow::FRAME_CHROME),
 159       has_frame_color(false),
 160       transparent_background(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
 168 AppWindow::CreateParams::~CreateParams() {}
 169
 170 gfx::Rect AppWindow::CreateParams::GetInitialWindowBounds(
 171     const gfx::Insets& frame_insets) const {
 172   // Combine into a single window bounds.
 173   gfx::Rect combined_bounds(window_spec.bounds);
 174   if (content_spec.bounds.x() != BoundsSpecification::kUnspecifiedPosition)
 175     combined_bounds.set_x(content_spec.bounds.x() - frame_insets.left());
 176   if (content_spec.bounds.y() != BoundsSpecification::kUnspecifiedPosition)
 177     combined_bounds.set_y(content_spec.bounds.y() - frame_insets.top());
 178   if (content_spec.bounds.width() > 0) {
 179     combined_bounds.set_width(
 180         content_spec.bounds.width() + frame_insets.width());
 181   }
 182   if (content_spec.bounds.height() > 0) {
 183     combined_bounds.set_height(
 184         content_spec.bounds.height() + frame_insets.height());
 185   }
 186
 187   // Constrain the bounds.
 188   SizeConstraints constraints(
 189       GetCombinedWindowConstraints(
 190           window_spec.minimum_size, content_spec.minimum_size, frame_insets),
 191       GetCombinedWindowConstraints(
 192           window_spec.maximum_size, content_spec.maximum_size, frame_insets));
 193   combined_bounds.set_size(constraints.ClampSize(combined_bounds.size()));
 194
 195   return combined_bounds;
 196 }
 197
 198 gfx::Size AppWindow::CreateParams::GetContentMinimumSize(
 199     const gfx::Insets& frame_insets) const {
 200   return GetCombinedContentConstraints(window_spec.minimum_size,
 201                                        content_spec.minimum_size,
 202                                        frame_insets);
 203 }
 204
 205 gfx::Size AppWindow::CreateParams::GetContentMaximumSize(
 206     const gfx::Insets& frame_insets) const {
 207   return GetCombinedContentConstraints(window_spec.maximum_size,
 208                                        content_spec.maximum_size,
 209                                        frame_insets);
 210 }
 211
 212 gfx::Size AppWindow::CreateParams::GetWindowMinimumSize(
 213     const gfx::Insets& frame_insets) const {
 214   return GetCombinedWindowConstraints(window_spec.minimum_size,
 215                                       content_spec.minimum_size,
 216                                       frame_insets);
 217 }
 218
 219 gfx::Size AppWindow::CreateParams::GetWindowMaximumSize(
 220     const gfx::Insets& frame_insets) const {
 221   return GetCombinedWindowConstraints(window_spec.maximum_size,
 222                                       content_spec.maximum_size,
 223                                       frame_insets);
 224 }
 225
 226 // AppWindow::Delegate
 227
 228 AppWindow::Delegate::~Delegate() {}
 229
 230 // AppWindow
 231
 232 AppWindow::AppWindow(BrowserContext* context,
 233                      Delegate* delegate,
 234                      const extensions::Extension* extension)
 235     : browser_context_(context),
 236       extension_id_(extension->id()),
 237       window_type_(WINDOW_TYPE_DEFAULT),
 238       delegate_(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   extensions::ExtensionsBrowserClient* client =
 248       extensions::ExtensionsBrowserClient::Get();
 249   CHECK(!client->IsGuestSession(context) || context->IsOffTheRecord())
 250       << "Only off the record window may be opened in the guest mode.";
 251 }
 252
 253 void AppWindow::Init(const GURL& url,
 254                      AppWindowContents* app_window_contents,
 255                      const CreateParams& params) {
 256   // Initialize the render interface and web contents
 257   app_window_contents_.reset(app_window_contents);
 258   app_window_contents_->Initialize(browser_context(), url);
 259   WebContents* web_contents = app_window_contents_->GetWebContents();
 260   if (CommandLine::ForCurrentProcess()->HasSwitch(
 261           switches::kEnableAppsShowOnFirstPaint)) {
 262     content::WebContentsObserver::Observe(web_contents);
 263   }
 264   delegate_->InitWebContents(web_contents);
 265   WebContentsModalDialogManager::CreateForWebContents(web_contents);
 266   // TODO(jamescook): Delegate out this creation.
 267   extensions::ChromeExtensionWebContentsObserver::CreateForWebContents(
 268       web_contents);
 269
 270   web_contents->SetDelegate(this);
 271   WebContentsModalDialogManager::FromWebContents(web_contents)
 272       ->SetDelegate(this);
 273   extensions::SetViewType(web_contents, extensions::VIEW_TYPE_APP_WINDOW);
 274
 275   // Initialize the window
 276   CreateParams new_params = LoadDefaults(params);
 277   window_type_ = new_params.window_type;
 278   window_key_ = new_params.window_key;
 279
 280   // Windows cannot be always-on-top in fullscreen mode for security reasons.
 281   cached_always_on_top_ = new_params.always_on_top;
 282   if (new_params.state == ui::SHOW_STATE_FULLSCREEN)
 283     new_params.always_on_top = false;
 284
 285   native_app_window_.reset(delegate_->CreateNativeAppWindow(this, new_params));
 286
 287   // Prevent the browser process from shutting down while this window exists.
 288   AppsClient::Get()->IncrementKeepAliveCount();
 289   UpdateExtensionAppIcon();
 290   AppWindowRegistry::Get(browser_context_)->AddAppWindow(this);
 291
 292   if (new_params.hidden) {
 293     // Although the window starts hidden by default, calling Hide() here
 294     // notifies observers of the window being hidden.
 295     Hide();
 296   } else {
 297     // Panels are not activated by default.
 298     Show(window_type_is_panel() || !new_params.focused ? SHOW_INACTIVE
 299                                                        : SHOW_ACTIVE);
 300   }
 301
 302   if (new_params.state == ui::SHOW_STATE_FULLSCREEN)
 303     Fullscreen();
 304   else if (new_params.state == ui::SHOW_STATE_MAXIMIZED)
 305     Maximize();
 306   else if (new_params.state == ui::SHOW_STATE_MINIMIZED)
 307     Minimize();
 308
 309   OnNativeWindowChanged();
 310
 311   // When the render view host is changed, the native window needs to know
 312   // about it in case it has any setup to do to make the renderer appear
 313   // properly. In particular, on Windows, the view's clickthrough region needs
 314   // to be set.
 315   extensions::ExtensionsBrowserClient* client =
 316       extensions::ExtensionsBrowserClient::Get();
 317   registrar_.Add(this,
 318                  chrome::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
 319                  content::Source<content::BrowserContext>(
 320                      client->GetOriginalContext(browser_context_)));
 321   // Close when the browser process is exiting.
 322   registrar_.Add(this,
 323                  chrome::NOTIFICATION_APP_TERMINATING,
 324                  content::NotificationService::AllSources());
 325   // Update the app menu if an ephemeral app becomes installed.
 326   registrar_.Add(this,
 327                  chrome::NOTIFICATION_EXTENSION_INSTALLED_DEPRECATED,
 328                  content::Source<content::BrowserContext>(
 329                      client->GetOriginalContext(browser_context_)));
 330
 331   app_window_contents_->LoadContents(new_params.creator_process_id);
 332
 333   if (CommandLine::ForCurrentProcess()->HasSwitch(
 334           switches::kEnableAppsShowOnFirstPaint)) {
 335     // We want to show the window only when the content has been painted. For
 336     // that to happen, we need to define a size for the content, otherwise the
 337     // layout will happen in a 0x0 area.
 338     gfx::Insets frame_insets = native_app_window_->GetFrameInsets();
 339     gfx::Rect initial_bounds = new_params.GetInitialWindowBounds(frame_insets);
 340     initial_bounds.Inset(frame_insets);
 341     apps::ResizeWebContents(web_contents, initial_bounds.size());
 342   }
 343 }
 344
 345 AppWindow::~AppWindow() {
 346   // Unregister now to prevent getting NOTIFICATION_APP_TERMINATING if we're the
 347   // last window open.
 348   registrar_.RemoveAll();
 349
 350   // Remove shutdown prevention.
 351   AppsClient::Get()->DecrementKeepAliveCount();
 352 }
 353
 354 void AppWindow::RequestMediaAccessPermission(
 355     content::WebContents* web_contents,
 356     const content::MediaStreamRequest& request,
 357     const content::MediaResponseCallback& callback) {
 358   const extensions::Extension* extension = GetExtension();
 359   if (!extension)
 360     return;
 361
 362   delegate_->RequestMediaAccessPermission(
 363       web_contents, request, callback, extension);
 364 }
 365
 366 WebContents* AppWindow::OpenURLFromTab(WebContents* source,
 367                                        const content::OpenURLParams& params) {
 368   // Don't allow the current tab to be navigated. It would be nice to map all
 369   // anchor tags (even those without target="_blank") to new tabs, but right
 370   // now we can't distinguish between those and <meta> refreshes or window.href
 371   // navigations, which we don't want to allow.
 372   // TOOD(mihaip): Can we check for user gestures instead?
 373   WindowOpenDisposition disposition = params.disposition;
 374   if (disposition == CURRENT_TAB) {
 375     AddMessageToDevToolsConsole(
 376         content::CONSOLE_MESSAGE_LEVEL_ERROR,
 377         base::StringPrintf(
 378             "Can't open same-window link to \"%s\"; try target=\"_blank\".",
 379             params.url.spec().c_str()));
 380     return NULL;
 381   }
 382
 383   // These dispositions aren't really navigations.
 384   if (disposition == SUPPRESS_OPEN || disposition == SAVE_TO_DISK ||
 385       disposition == IGNORE_ACTION) {
 386     return NULL;
 387   }
 388
 389   WebContents* contents =
 390       delegate_->OpenURLFromTab(browser_context_, source, params);
 391   if (!contents) {
 392     AddMessageToDevToolsConsole(
 393         content::CONSOLE_MESSAGE_LEVEL_ERROR,
 394         base::StringPrintf(
 395             "Can't navigate to \"%s\"; apps do not support navigation.",
 396             params.url.spec().c_str()));
 397   }
 398
 399   return contents;
 400 }
 401
 402 void AppWindow::AddNewContents(WebContents* source,
 403                                WebContents* new_contents,
 404                                WindowOpenDisposition disposition,
 405                                const gfx::Rect& initial_pos,
 406                                bool user_gesture,
 407                                bool* was_blocked) {
 408   DCHECK(new_contents->GetBrowserContext() == browser_context_);
 409   delegate_->AddNewContents(browser_context_,
 410                             new_contents,
 411                             disposition,
 412                             initial_pos,
 413                             user_gesture,
 414                             was_blocked);
 415 }
 416
 417 bool AppWindow::PreHandleKeyboardEvent(
 418     content::WebContents* source,
 419     const content::NativeWebKeyboardEvent& event,
 420     bool* is_keyboard_shortcut) {
 421   const extensions::Extension* extension = GetExtension();
 422   if (!extension)
 423     return false;
 424
 425   // Here, we can handle a key event before the content gets it. When we are
 426   // fullscreen and it is not forced, we want to allow the user to leave
 427   // when ESC is pressed.
 428   // However, if the application has the "overrideEscFullscreen" permission, we
 429   // should let it override that behavior.
 430   // ::HandleKeyboardEvent() will only be called if the KeyEvent's default
 431   // action is not prevented.
 432   // Thus, we should handle the KeyEvent here only if the permission is not set.
 433   if (event.windowsKeyCode == ui::VKEY_ESCAPE &&
 434       (fullscreen_types_ != FULLSCREEN_TYPE_NONE) &&
 435       ((fullscreen_types_ & FULLSCREEN_TYPE_FORCED) == 0) &&
 436       !extension->permissions_data()->HasAPIPermission(
 437           APIPermission::kOverrideEscFullscreen)) {
 438     Restore();
 439     return true;
 440   }
 441
 442   return false;
 443 }
 444
 445 void AppWindow::HandleKeyboardEvent(
 446     WebContents* source,
 447     const content::NativeWebKeyboardEvent& event) {
 448   // If the window is currently fullscreen and not forced, ESC should leave
 449   // fullscreen.  If this code is being called for ESC, that means that the
 450   // KeyEvent's default behavior was not prevented by the content.
 451   if (event.windowsKeyCode == ui::VKEY_ESCAPE &&
 452       (fullscreen_types_ != FULLSCREEN_TYPE_NONE) &&
 453       ((fullscreen_types_ & FULLSCREEN_TYPE_FORCED) == 0)) {
 454     Restore();
 455     return;
 456   }
 457
 458   native_app_window_->HandleKeyboardEvent(event);
 459 }
 460
 461 void AppWindow::RequestToLockMouse(WebContents* web_contents,
 462                                    bool user_gesture,
 463                                    bool last_unlocked_by_target) {
 464   const extensions::Extension* extension = GetExtension();
 465   if (!extension)
 466     return;
 467
 468   bool has_permission = IsExtensionWithPermissionOrSuggestInConsole(
 469       APIPermission::kPointerLock,
 470       extension,
 471       web_contents->GetRenderViewHost());
 472
 473   web_contents->GotResponseToLockMouseRequest(has_permission);
 474 }
 475
 476 bool AppWindow::PreHandleGestureEvent(WebContents* source,
 477                                       const blink::WebGestureEvent& event) {
 478   // Disable pinch zooming in app windows.
 479   return event.type == blink::WebGestureEvent::GesturePinchBegin ||
 480          event.type == blink::WebGestureEvent::GesturePinchUpdate ||
 481          event.type == blink::WebGestureEvent::GesturePinchEnd;
 482 }
 483
 484 void AppWindow::DidFirstVisuallyNonEmptyPaint() {
 485   first_paint_complete_ = true;
 486   if (show_on_first_paint_) {
 487     DCHECK(delayed_show_type_ == SHOW_ACTIVE ||
 488            delayed_show_type_ == SHOW_INACTIVE);
 489     Show(delayed_show_type_);
 490   }
 491 }
 492
 493 void AppWindow::OnNativeClose() {
 494   AppWindowRegistry::Get(browser_context_)->RemoveAppWindow(this);
 495   if (app_window_contents_) {
 496     WebContents* web_contents = app_window_contents_->GetWebContents();
 497     WebContentsModalDialogManager::FromWebContents(web_contents)
 498         ->SetDelegate(NULL);
 499     app_window_contents_->NativeWindowClosed();
 500   }
 501   delete this;
 502 }
 503
 504 void AppWindow::OnNativeWindowChanged() {
 505   SaveWindowPosition();
 506
 507 #if defined(OS_WIN)
 508   if (native_app_window_ && cached_always_on_top_ &&
 509       !IsFullscreen(fullscreen_types_) && !native_app_window_->IsMaximized() &&
 510       !native_app_window_->IsMinimized()) {
 511     UpdateNativeAlwaysOnTop();
 512   }
 513 #endif
 514
 515   if (app_window_contents_ && native_app_window_)
 516     app_window_contents_->NativeWindowChanged(native_app_window_.get());
 517 }
 518
 519 void AppWindow::OnNativeWindowActivated() {
 520   AppWindowRegistry::Get(browser_context_)->AppWindowActivated(this);
 521 }
 522
 523 content::WebContents* AppWindow::web_contents() const {
 524   return app_window_contents_->GetWebContents();
 525 }
 526
 527 const extensions::Extension* AppWindow::GetExtension() const {
 528   return extensions::ExtensionRegistry::Get(browser_context_)
 529       ->enabled_extensions()
 530       .GetByID(extension_id_);
 531 }
 532
 533 NativeAppWindow* AppWindow::GetBaseWindow() { return native_app_window_.get(); }
 534
 535 gfx::NativeWindow AppWindow::GetNativeWindow() {
 536   return GetBaseWindow()->GetNativeWindow();
 537 }
 538
 539 gfx::Rect AppWindow::GetClientBounds() const {
 540   gfx::Rect bounds = native_app_window_->GetBounds();
 541   bounds.Inset(native_app_window_->GetFrameInsets());
 542   return bounds;
 543 }
 544
 545 base::string16 AppWindow::GetTitle() const {
 546   const extensions::Extension* extension = GetExtension();
 547   if (!extension)
 548     return base::string16();
 549
 550   // WebContents::GetTitle() will return the page's URL if there's no <title>
 551   // specified. However, we'd prefer to show the name of the extension in that
 552   // case, so we directly inspect the NavigationEntry's title.
 553   base::string16 title;
 554   if (!web_contents() || !web_contents()->GetController().GetActiveEntry() ||
 555       web_contents()->GetController().GetActiveEntry()->GetTitle().empty()) {
 556     title = base::UTF8ToUTF16(extension->name());
 557   } else {
 558     title = web_contents()->GetTitle();
 559   }
 560   base::RemoveChars(title, base::ASCIIToUTF16("\n"), &title);
 561   return title;
 562 }
 563
 564 void AppWindow::SetAppIconUrl(const GURL& url) {
 565   // If the same url is being used for the badge, ignore it.
 566   if (url == badge_icon_url_)
 567     return;
 568
 569   // Avoid using any previous icons that were being downloaded.
 570   image_loader_ptr_factory_.InvalidateWeakPtrs();
 571
 572   // Reset |app_icon_image_| to abort pending image load (if any).
 573   app_icon_image_.reset();
 574
 575   app_icon_url_ = url;
 576   web_contents()->DownloadImage(
 577       url,
 578       true,  // is a favicon
 579       0,     // no maximum size
 580       base::Bind(&AppWindow::DidDownloadFavicon,
 581                  image_loader_ptr_factory_.GetWeakPtr()));
 582 }
 583
 584 void AppWindow::SetBadgeIconUrl(const GURL& url) {
 585   // Avoid using any previous icons that were being downloaded.
 586   image_loader_ptr_factory_.InvalidateWeakPtrs();
 587
 588   // Reset |app_icon_image_| to abort pending image load (if any).
 589   badge_icon_image_.reset();
 590
 591   badge_icon_url_ = url;
 592   web_contents()->DownloadImage(
 593       url,
 594       true,  // is a favicon
 595       0,     // no maximum size
 596       base::Bind(&AppWindow::DidDownloadFavicon,
 597                  image_loader_ptr_factory_.GetWeakPtr()));
 598 }
 599
 600 void AppWindow::ClearBadge() {
 601   badge_icon_image_.reset();
 602   badge_icon_url_ = GURL();
 603   UpdateBadgeIcon(gfx::Image());
 604 }
 605
 606 void AppWindow::UpdateShape(scoped_ptr<SkRegion> region) {
 607   native_app_window_->UpdateShape(region.Pass());
 608 }
 609
 610 void AppWindow::UpdateDraggableRegions(
 611     const std::vector<extensions::DraggableRegion>& regions) {
 612   native_app_window_->UpdateDraggableRegions(regions);
 613 }
 614
 615 void AppWindow::UpdateAppIcon(const gfx::Image& image) {
 616   if (image.IsEmpty())
 617     return;
 618   app_icon_ = image;
 619   native_app_window_->UpdateWindowIcon();
 620   AppWindowRegistry::Get(browser_context_)->AppWindowIconChanged(this);
 621 }
 622
 623 void AppWindow::Fullscreen() {
 624 #if !defined(OS_MACOSX)
 625   // Do not enter fullscreen mode if disallowed by pref.
 626   PrefService* prefs =
 627       extensions::ExtensionsBrowserClient::Get()->GetPrefServiceForContext(
 628           browser_context());
 629   if (!prefs->GetBoolean(prefs::kAppFullscreenAllowed))
 630     return;
 631 #endif
 632   fullscreen_types_ |= FULLSCREEN_TYPE_WINDOW_API;
 633   SetNativeWindowFullscreen();
 634 }
 635
 636 void AppWindow::Maximize() { GetBaseWindow()->Maximize(); }
 637
 638 void AppWindow::Minimize() { GetBaseWindow()->Minimize(); }
 639
 640 void AppWindow::Restore() {
 641   if (IsFullscreen(fullscreen_types_)) {
 642     fullscreen_types_ = FULLSCREEN_TYPE_NONE;
 643     SetNativeWindowFullscreen();
 644   } else {
 645     GetBaseWindow()->Restore();
 646   }
 647 }
 648
 649 void AppWindow::OSFullscreen() {
 650 #if !defined(OS_MACOSX)
 651   // Do not enter fullscreen mode if disallowed by pref.
 652   PrefService* prefs =
 653       extensions::ExtensionsBrowserClient::Get()->GetPrefServiceForContext(
 654           browser_context());
 655   if (!prefs->GetBoolean(prefs::kAppFullscreenAllowed))
 656     return;
 657 #endif
 658   fullscreen_types_ |= FULLSCREEN_TYPE_OS;
 659   SetNativeWindowFullscreen();
 660 }
 661
 662 void AppWindow::ForcedFullscreen() {
 663   fullscreen_types_ |= FULLSCREEN_TYPE_FORCED;
 664   SetNativeWindowFullscreen();
 665 }
 666
 667 void AppWindow::SetContentSizeConstraints(const gfx::Size& min_size,
 668                                           const gfx::Size& max_size) {
 669   SizeConstraints constraints(min_size, max_size);
 670   native_app_window_->SetContentSizeConstraints(constraints.GetMinimumSize(),
 671                                                 constraints.GetMaximumSize());
 672
 673   gfx::Rect bounds = GetClientBounds();
 674   gfx::Size constrained_size = constraints.ClampSize(bounds.size());
 675   if (bounds.size() != constrained_size) {
 676     bounds.set_size(constrained_size);
 677     bounds.Inset(-native_app_window_->GetFrameInsets());
 678     native_app_window_->SetBounds(bounds);
 679   }
 680   OnNativeWindowChanged();
 681 }
 682
 683 void AppWindow::Show(ShowType show_type) {
 684   is_hidden_ = false;
 685
 686   if (CommandLine::ForCurrentProcess()->HasSwitch(
 687           switches::kEnableAppsShowOnFirstPaint)) {
 688     show_on_first_paint_ = true;
 689
 690     if (!first_paint_complete_) {
 691       delayed_show_type_ = show_type;
 692       return;
 693     }
 694   }
 695
 696   switch (show_type) {
 697     case SHOW_ACTIVE:
 698       GetBaseWindow()->Show();
 699       break;
 700     case SHOW_INACTIVE:
 701       GetBaseWindow()->ShowInactive();
 702       break;
 703   }
 704   AppWindowRegistry::Get(browser_context_)->AppWindowShown(this);
 705
 706   has_been_shown_ = true;
 707   SendOnWindowShownIfShown();
 708 }
 709
 710 void AppWindow::Hide() {
 711   // This is there to prevent race conditions with Hide() being called before
 712   // there was a non-empty paint. It should have no effect in a non-racy
 713   // scenario where the application is hiding then showing a window: the second
 714   // show will not be delayed.
 715   is_hidden_ = true;
 716   show_on_first_paint_ = false;
 717   GetBaseWindow()->Hide();
 718   AppWindowRegistry::Get(browser_context_)->AppWindowHidden(this);
 719 }
 720
 721 void AppWindow::SetAlwaysOnTop(bool always_on_top) {
 722   if (cached_always_on_top_ == always_on_top)
 723     return;
 724
 725   cached_always_on_top_ = always_on_top;
 726
 727   // As a security measure, do not allow fullscreen windows or windows that
 728   // overlap the taskbar to be on top. The property will be applied when the
 729   // window exits fullscreen and moves away from the taskbar.
 730   if (!IsFullscreen(fullscreen_types_) && !IntersectsWithTaskbar())
 731     native_app_window_->SetAlwaysOnTop(always_on_top);
 732
 733   OnNativeWindowChanged();
 734 }
 735
 736 bool AppWindow::IsAlwaysOnTop() const { return cached_always_on_top_; }
 737
 738 void AppWindow::WindowEventsReady() {
 739   can_send_events_ = true;
 740   SendOnWindowShownIfShown();
 741 }
 742
 743 void AppWindow::GetSerializedState(base::DictionaryValue* properties) const {
 744   DCHECK(properties);
 745
 746   properties->SetBoolean("fullscreen",
 747                          native_app_window_->IsFullscreenOrPending());
 748   properties->SetBoolean("minimized", native_app_window_->IsMinimized());
 749   properties->SetBoolean("maximized", native_app_window_->IsMaximized());
 750   properties->SetBoolean("alwaysOnTop", IsAlwaysOnTop());
 751   properties->SetBoolean("hasFrameColor", native_app_window_->HasFrameColor());
 752
 753   // These properties are undocumented and are to enable testing. Alpha is
 754   // removed to
 755   // make the values easier to check.
 756   SkColor transparent_white = ~SK_ColorBLACK;
 757   properties->SetInteger(
 758       "activeFrameColor",
 759       native_app_window_->ActiveFrameColor() & transparent_white);
 760   properties->SetInteger(
 761       "inactiveFrameColor",
 762       native_app_window_->InactiveFrameColor() & transparent_white);
 763
 764   gfx::Rect content_bounds = GetClientBounds();
 765   gfx::Size content_min_size = native_app_window_->GetContentMinimumSize();
 766   gfx::Size content_max_size = native_app_window_->GetContentMaximumSize();
 767   SetBoundsProperties(content_bounds,
 768                       content_min_size,
 769                       content_max_size,
 770                       "innerBounds",
 771                       properties);
 772
 773   gfx::Insets frame_insets = native_app_window_->GetFrameInsets();
 774   gfx::Rect frame_bounds = native_app_window_->GetBounds();
 775   gfx::Size frame_min_size =
 776       SizeConstraints::AddFrameToConstraints(content_min_size, frame_insets);
 777   gfx::Size frame_max_size =
 778       SizeConstraints::AddFrameToConstraints(content_max_size, frame_insets);
 779   SetBoundsProperties(frame_bounds,
 780                       frame_min_size,
 781                       frame_max_size,
 782                       "outerBounds",
 783                       properties);
 784 }
 785
 786 //------------------------------------------------------------------------------
 787 // Private methods
 788
 789 void AppWindow::UpdateBadgeIcon(const gfx::Image& image) {
 790   badge_icon_ = image;
 791   native_app_window_->UpdateBadgeIcon();
 792 }
 793
 794 void AppWindow::DidDownloadFavicon(
 795     int id,
 796     int http_status_code,
 797     const GURL& image_url,
 798     const std::vector<SkBitmap>& bitmaps,
 799     const std::vector<gfx::Size>& original_bitmap_sizes) {
 800   if ((image_url != app_icon_url_ && image_url != badge_icon_url_) ||
 801       bitmaps.empty()) {
 802     return;
 803   }
 804
 805   // Bitmaps are ordered largest to smallest. Choose the smallest bitmap
 806   // whose height >= the preferred size.
 807   int largest_index = 0;
 808   for (size_t i = 1; i < bitmaps.size(); ++i) {
 809     if (bitmaps[i].height() < delegate_->PreferredIconSize())
 810       break;
 811     largest_index = i;
 812   }
 813   const SkBitmap& largest = bitmaps[largest_index];
 814   if (image_url == app_icon_url_) {
 815     UpdateAppIcon(gfx::Image::CreateFrom1xBitmap(largest));
 816     return;
 817   }
 818
 819   UpdateBadgeIcon(gfx::Image::CreateFrom1xBitmap(largest));
 820 }
 821
 822 void AppWindow::OnExtensionIconImageChanged(extensions::IconImage* image) {
 823   DCHECK_EQ(app_icon_image_.get(), image);
 824
 825   UpdateAppIcon(gfx::Image(app_icon_image_->image_skia()));
 826 }
 827
 828 void AppWindow::UpdateExtensionAppIcon() {
 829   // Avoid using any previous app icons were being downloaded.
 830   image_loader_ptr_factory_.InvalidateWeakPtrs();
 831
 832   const gfx::ImageSkia& default_icon =
 833       *ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
 834           IDR_APP_DEFAULT_ICON);
 835
 836   const extensions::Extension* extension = GetExtension();
 837   if (!extension)
 838     return;
 839
 840   app_icon_image_.reset(
 841       new extensions::IconImage(browser_context(),
 842                                 extension,
 843                                 extensions::IconsInfo::GetIcons(extension),
 844                                 delegate_->PreferredIconSize(),
 845                                 default_icon,
 846                                 this));
 847
 848   // Triggers actual image loading with 1x resources. The 2x resource will
 849   // be handled by IconImage class when requested.
 850   app_icon_image_->image_skia().GetRepresentation(1.0f);
 851 }
 852
 853 void AppWindow::SetNativeWindowFullscreen() {
 854   native_app_window_->SetFullscreen(fullscreen_types_);
 855
 856   if (cached_always_on_top_)
 857     UpdateNativeAlwaysOnTop();
 858 }
 859
 860 bool AppWindow::IntersectsWithTaskbar() const {
 861 #if defined(OS_WIN)
 862   gfx::Screen* screen = gfx::Screen::GetNativeScreen();
 863   gfx::Rect window_bounds = native_app_window_->GetRestoredBounds();
 864   std::vector<gfx::Display> displays = screen->GetAllDisplays();
 865
 866   for (std::vector<gfx::Display>::const_iterator it = displays.begin();
 867        it != displays.end();
 868        ++it) {
 869     gfx::Rect taskbar_bounds = it->bounds();
 870     taskbar_bounds.Subtract(it->work_area());
 871     if (taskbar_bounds.IsEmpty())
 872       continue;
 873
 874     if (window_bounds.Intersects(taskbar_bounds))
 875       return true;
 876   }
 877 #endif
 878
 879   return false;
 880 }
 881
 882 void AppWindow::UpdateNativeAlwaysOnTop() {
 883   DCHECK(cached_always_on_top_);
 884   bool is_on_top = native_app_window_->IsAlwaysOnTop();
 885   bool fullscreen = IsFullscreen(fullscreen_types_);
 886   bool intersects_taskbar = IntersectsWithTaskbar();
 887
 888   if (is_on_top && (fullscreen || intersects_taskbar)) {
 889     // When entering fullscreen or overlapping the taskbar, ensure windows are
 890     // not always-on-top.
 891     native_app_window_->SetAlwaysOnTop(false);
 892   } else if (!is_on_top && !fullscreen && !intersects_taskbar) {
 893     // When exiting fullscreen and moving away from the taskbar, reinstate
 894     // always-on-top.
 895     native_app_window_->SetAlwaysOnTop(true);
 896   }
 897 }
 898
 899 void AppWindow::SendOnWindowShownIfShown() {
 900   if (!can_send_events_ || !has_been_shown_)
 901     return;
 902
 903   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kTestType)) {
 904     app_window_contents_->DispatchWindowShownForTests();
 905   }
 906 }
 907
 908 void AppWindow::CloseContents(WebContents* contents) {
 909   native_app_window_->Close();
 910 }
 911
 912 bool AppWindow::ShouldSuppressDialogs() { return true; }
 913
 914 content::ColorChooser* AppWindow::OpenColorChooser(
 915     WebContents* web_contents,
 916     SkColor initial_color,
 917     const std::vector<content::ColorSuggestion>& suggestionss) {
 918   return delegate_->ShowColorChooser(web_contents, initial_color);
 919 }
 920
 921 void AppWindow::RunFileChooser(WebContents* tab,
 922                                const content::FileChooserParams& params) {
 923   if (window_type_is_panel()) {
 924     // Panels can't host a file dialog, abort. TODO(stevenjb): allow file
 925     // dialogs to be unhosted but still close with the owning web contents.
 926     // crbug.com/172502.
 927     LOG(WARNING) << "File dialog opened by panel.";
 928     return;
 929   }
 930
 931   delegate_->RunFileChooser(tab, params);
 932 }
 933
 934 bool AppWindow::IsPopupOrPanel(const WebContents* source) const { return true; }
 935
 936 void AppWindow::MoveContents(WebContents* source, const gfx::Rect& pos) {
 937   native_app_window_->SetBounds(pos);
 938 }
 939
 940 void AppWindow::NavigationStateChanged(const content::WebContents* source,
 941                                        unsigned changed_flags) {
 942   if (changed_flags & content::INVALIDATE_TYPE_TITLE)
 943     native_app_window_->UpdateWindowTitle();
 944   else if (changed_flags & content::INVALIDATE_TYPE_TAB)
 945     native_app_window_->UpdateWindowIcon();
 946 }
 947
 948 void AppWindow::ToggleFullscreenModeForTab(content::WebContents* source,
 949                                            bool enter_fullscreen) {
 950 #if !defined(OS_MACOSX)
 951   // Do not enter fullscreen mode if disallowed by pref.
 952   // TODO(bartfab): Add a test once it becomes possible to simulate a user
 953   // gesture. http://crbug.com/174178
 954   PrefService* prefs =
 955       extensions::ExtensionsBrowserClient::Get()->GetPrefServiceForContext(
 956           browser_context());
 957   if (enter_fullscreen && !prefs->GetBoolean(prefs::kAppFullscreenAllowed)) {
 958     return;
 959   }
 960 #endif
 961
 962   const extensions::Extension* extension = GetExtension();
 963   if (!extension)
 964     return;
 965
 966   if (!IsExtensionWithPermissionOrSuggestInConsole(
 967           APIPermission::kFullscreen, extension, source->GetRenderViewHost())) {
 968     return;
 969   }
 970
 971   if (enter_fullscreen)
 972     fullscreen_types_ |= FULLSCREEN_TYPE_HTML_API;
 973   else
 974     fullscreen_types_ &= ~FULLSCREEN_TYPE_HTML_API;
 975   SetNativeWindowFullscreen();
 976 }
 977
 978 bool AppWindow::IsFullscreenForTabOrPending(const content::WebContents* source)
 979     const {
 980   return ((fullscreen_types_ & FULLSCREEN_TYPE_HTML_API) != 0);
 981 }
 982
 983 void AppWindow::Observe(int type,
 984                         const content::NotificationSource& source,
 985                         const content::NotificationDetails& details) {
 986   switch (type) {
 987     case chrome::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED: {
 988       const extensions::Extension* unloaded_extension =
 989           content::Details<extensions::UnloadedExtensionInfo>(details)
 990               ->extension;
 991       if (extension_id_ == unloaded_extension->id())
 992         native_app_window_->Close();
 993       break;
 994     }
 995     case chrome::NOTIFICATION_EXTENSION_INSTALLED_DEPRECATED: {
 996       const extensions::Extension* installed_extension =
 997           content::Details<const extensions::InstalledExtensionInfo>(details)
 998               ->extension;
 999       DCHECK(installed_extension);
1000       if (installed_extension->id() == extension_id())
1001         native_app_window_->UpdateShelfMenu();
1002       break;
1003     }
1004     case chrome::NOTIFICATION_APP_TERMINATING:
1005       native_app_window_->Close();
1006       break;
1007     default:
1008       NOTREACHED() << "Received unexpected notification";
1009   }
1010 }
1011
1012 void AppWindow::SetWebContentsBlocked(content::WebContents* web_contents,
1013                                       bool blocked) {
1014   delegate_->SetWebContentsBlocked(web_contents, blocked);
1015 }
1016
1017 bool AppWindow::IsWebContentsVisible(content::WebContents* web_contents) {
1018   return delegate_->IsWebContentsVisible(web_contents);
1019 }
1020
1021 WebContentsModalDialogHost* AppWindow::GetWebContentsModalDialogHost() {
1022   return native_app_window_.get();
1023 }
1024
1025 void AppWindow::AddMessageToDevToolsConsole(ConsoleMessageLevel level,
1026                                             const std::string& message) {
1027   content::RenderViewHost* rvh = web_contents()->GetRenderViewHost();
1028   rvh->Send(new ExtensionMsg_AddMessageToConsole(
1029       rvh->GetRoutingID(), level, message));
1030 }
1031
1032 void AppWindow::SaveWindowPosition() {
1033   if (window_key_.empty())
1034     return;
1035   if (!native_app_window_)
1036     return;
1037
1038   AppWindowGeometryCache* cache =
1039       AppWindowGeometryCache::Get(browser_context());
1040
1041   gfx::Rect bounds = native_app_window_->GetRestoredBounds();
1042   gfx::Rect screen_bounds =
1043       gfx::Screen::GetNativeScreen()->GetDisplayMatching(bounds).work_area();
1044   ui::WindowShowState window_state = native_app_window_->GetRestoredState();
1045   cache->SaveGeometry(
1046       extension_id(), window_key_, bounds, screen_bounds, window_state);
1047 }
1048
1049 void AppWindow::AdjustBoundsToBeVisibleOnScreen(
1050     const gfx::Rect& cached_bounds,
1051     const gfx::Rect& cached_screen_bounds,
1052     const gfx::Rect& current_screen_bounds,
1053     const gfx::Size& minimum_size,
1054     gfx::Rect* bounds) const {
1055   *bounds = cached_bounds;
1056
1057   // Reposition and resize the bounds if the cached_screen_bounds is different
1058   // from the current screen bounds and the current screen bounds doesn't
1059   // completely contain the bounds.
1060   if (cached_screen_bounds != current_screen_bounds &&
1061       !current_screen_bounds.Contains(cached_bounds)) {
1062     bounds->set_width(
1063         std::max(minimum_size.width(),
1064                  std::min(bounds->width(), current_screen_bounds.width())));
1065     bounds->set_height(
1066         std::max(minimum_size.height(),
1067                  std::min(bounds->height(), current_screen_bounds.height())));
1068     bounds->set_x(
1069         std::max(current_screen_bounds.x(),
1070                  std::min(bounds->x(),
1071                           current_screen_bounds.right() - bounds->width())));
1072     bounds->set_y(
1073         std::max(current_screen_bounds.y(),
1074                  std::min(bounds->y(),
1075                           current_screen_bounds.bottom() - bounds->height())));
1076   }
1077 }
1078
1079 AppWindow::CreateParams AppWindow::LoadDefaults(CreateParams params)
1080     const {
1081   // Ensure width and height are specified.
1082   if (params.content_spec.bounds.width() == 0 &&
1083       params.window_spec.bounds.width() == 0) {
1084     params.content_spec.bounds.set_width(kDefaultWidth);
1085   }
1086   if (params.content_spec.bounds.height() == 0 &&
1087       params.window_spec.bounds.height() == 0) {
1088     params.content_spec.bounds.set_height(kDefaultHeight);
1089   }
1090
1091   // If left and top are left undefined, the native app window will center
1092   // the window on the main screen in a platform-defined manner.
1093
1094   // Load cached state if it exists.
1095   if (!params.window_key.empty()) {
1096     AppWindowGeometryCache* cache =
1097         AppWindowGeometryCache::Get(browser_context());
1098
1099     gfx::Rect cached_bounds;
1100     gfx::Rect cached_screen_bounds;
1101     ui::WindowShowState cached_state = ui::SHOW_STATE_DEFAULT;
1102     if (cache->GetGeometry(extension_id(),
1103                            params.window_key,
1104                            &cached_bounds,
1105                            &cached_screen_bounds,
1106                            &cached_state)) {
1107       // App window has cached screen bounds, make sure it fits on screen in
1108       // case the screen resolution changed.
1109       gfx::Screen* screen = gfx::Screen::GetNativeScreen();
1110       gfx::Display display = screen->GetDisplayMatching(cached_bounds);
1111       gfx::Rect current_screen_bounds = display.work_area();
1112       SizeConstraints constraints(params.GetWindowMinimumSize(gfx::Insets()),
1113                                   params.GetWindowMaximumSize(gfx::Insets()));
1114       AdjustBoundsToBeVisibleOnScreen(cached_bounds,
1115                                       cached_screen_bounds,
1116                                       current_screen_bounds,
1117                                       constraints.GetMinimumSize(),
1118                                       &params.window_spec.bounds);
1119       params.state = cached_state;
1120
1121       // Since we are restoring a cached state, reset the content bounds spec to
1122       // ensure it is not used.
1123       params.content_spec.ResetBounds();
1124     }
1125   }
1126
1127   return params;
1128 }
1129
1130 // static
1131 SkRegion* AppWindow::RawDraggableRegionsToSkRegion(
1132     const std::vector<extensions::DraggableRegion>& regions) {
1133   SkRegion* sk_region = new SkRegion;
1134   for (std::vector<extensions::DraggableRegion>::const_iterator iter =
1135            regions.begin();
1136        iter != regions.end();
1137        ++iter) {
1138     const extensions::DraggableRegion& region = *iter;
1139     sk_region->op(
1140         region.bounds.x(),
1141         region.bounds.y(),
1142         region.bounds.right(),
1143         region.bounds.bottom(),
1144         region.draggable ? SkRegion::kUnion_Op : SkRegion::kDifference_Op);
1145   }
1146   return sk_region;
1147 }
1148
1149 }  // namespace apps