DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Header

Mercurial (d8847129d134)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */


#include "nsWebShellWindow.h"

#include "nsLayoutCID.h"
#include "nsContentCID.h"
#include "nsIWeakReference.h"
#include "nsIContentViewer.h"
#include "nsIComponentManager.h"
#include "nsIServiceManager.h"
#include "nsIURL.h"
#include "nsIIOService.h"
#include "nsIURL.h"
#include "nsNetCID.h"
#include "nsIStringBundle.h"
#include "nsReadableUtils.h"

#include "nsContentUtils.h"
#include "nsEscape.h"
#include "nsPIDOMWindow.h"
#include "nsIWebNavigation.h"
#include "nsIWindowWatcher.h"

#include "nsIDOMXULElement.h"

#include "nsWidgetInitData.h"
#include "nsWidgetsCID.h"
#include "nsIWidget.h"
#include "nsIWidgetListener.h"

#include "nsIDOMCharacterData.h"
#include "nsIDOMNodeList.h"

#include "nsITimer.h"
#include "nsXULPopupManager.h"


#include "nsIDOMXULDocument.h"

#include "nsFocusManager.h"

#include "nsIWebProgress.h"
#include "nsIWebProgressListener.h"

#include "nsIDocument.h"
#include "nsIDOMDocument.h"
#include "nsIDOMNode.h"
#include "nsIDOMElement.h"
#include "nsIDocumentLoaderFactory.h"
#include "nsIObserverService.h"
#include "prprf.h"

#include "nsIScreenManager.h"
#include "nsIScreen.h"

#include "nsIContent.h" // for menus
#include "nsIScriptSecurityManager.h"

// For calculating size
#include "nsIPresShell.h"
#include "nsPresContext.h"

#include "nsIBaseWindow.h"
#include "nsIDocShellTreeItem.h"

#include "mozilla/Attributes.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/MouseEvents.h"

#ifdef XP_MACOSX
#include "nsINativeMenuService.h"
#define USE_NATIVE_MENUS
#endif

using namespace mozilla;
using namespace mozilla::dom;

/* Define Class IDs */
static NS_DEFINE_CID(kWindowCID,           NS_WINDOW_CID);

#define SIZE_PERSISTENCE_TIMEOUT 500 // msec

nsWebShellWindow::nsWebShellWindow(uint32_t aChromeFlags)
  : nsXULWindow(aChromeFlags)
  , mSPTimerLock("nsWebShellWindow.mSPTimerLock")
{
}

nsWebShellWindow::~nsWebShellWindow()
{
  MutexAutoLock lock(mSPTimerLock);
  if (mSPTimer)
    mSPTimer->Cancel();
}

NS_IMPL_ADDREF_INHERITED(nsWebShellWindow, nsXULWindow)
NS_IMPL_RELEASE_INHERITED(nsWebShellWindow, nsXULWindow)

NS_INTERFACE_MAP_BEGIN(nsWebShellWindow)
  NS_INTERFACE_MAP_ENTRY(nsIWebProgressListener)
NS_INTERFACE_MAP_END_INHERITING(nsXULWindow)

nsresult nsWebShellWindow::Initialize(nsIXULWindow* aParent,
                                      nsIXULWindow* aOpener,
                                      nsIURI* aUrl,
                                      int32_t aInitialWidth,
                                      int32_t aInitialHeight,
                                      bool aIsHiddenWindow,
                                      nsITabParent *aOpeningTab,
                                      nsWidgetInitData& widgetInitData)
{
  nsresult rv;
  nsCOMPtr<nsIWidget> parentWidget;

  mIsHiddenWindow = aIsHiddenWindow;

  int32_t initialX = 0, initialY = 0;
  nsCOMPtr<nsIBaseWindow> base(do_QueryInterface(aOpener));
  if (base) {
    rv = base->GetPositionAndSize(&mOpenerScreenRect.x,
                                  &mOpenerScreenRect.y,
                                  &mOpenerScreenRect.width,
                                  &mOpenerScreenRect.height);
    if (NS_FAILED(rv)) {
      mOpenerScreenRect.SetEmpty();
    } else {
      double scale;
      if (NS_SUCCEEDED(base->GetUnscaledDevicePixelsPerCSSPixel(&scale))) {
        mOpenerScreenRect.x = NSToIntRound(mOpenerScreenRect.x / scale);
        mOpenerScreenRect.y = NSToIntRound(mOpenerScreenRect.y / scale);
        mOpenerScreenRect.width = NSToIntRound(mOpenerScreenRect.width / scale);
        mOpenerScreenRect.height = NSToIntRound(mOpenerScreenRect.height / scale);
      }
      initialX = mOpenerScreenRect.x;
      initialY = mOpenerScreenRect.y;
      ConstrainToOpenerScreen(&initialX, &initialY);
    }
  }

  // XXX: need to get the default window size from prefs...
  // Doesn't come from prefs... will come from CSS/XUL/RDF
  nsIntRect r(initialX, initialY, aInitialWidth, aInitialHeight);
  
  // Create top level window
  mWindow = do_CreateInstance(kWindowCID, &rv);
  if (NS_OK != rv) {
    return rv;
  }

  /* This next bit is troublesome. We carry two different versions of a pointer
     to our parent window. One is the parent window's widget, which is passed
     to our own widget. The other is a weak reference we keep here to our
     parent WebShellWindow. The former is useful to the widget, and we can't
     trust its treatment of the parent reference because they're platform-
     specific. The latter is useful to this class.
       A better implementation would be one in which the parent keeps strong
     references to its children and closes them before it allows itself
     to be closed. This would mimic the behaviour of OSes that support
     top-level child windows in OSes that do not. Later.
  */
  nsCOMPtr<nsIBaseWindow> parentAsWin(do_QueryInterface(aParent));
  if (parentAsWin) {
    parentAsWin->GetMainWidget(getter_AddRefs(parentWidget));
    mParentWindow = do_GetWeakReference(aParent);
  }

  mWindow->SetWidgetListener(this);
  mWindow->Create((nsIWidget *)parentWidget,          // Parent nsIWidget
                  nullptr,                            // Native parent widget
                  r,                                  // Widget dimensions
                  nullptr,                            // Device context
                  &widgetInitData);                   // Widget initialization data
  mWindow->GetClientBounds(r);
  // Match the default background color of content. Important on windows
  // since we no longer use content child widgets.
  mWindow->SetBackgroundColor(NS_RGB(255,255,255));

  // Create web shell
  mDocShell = do_CreateInstance("@mozilla.org/docshell;1");
  NS_ENSURE_TRUE(mDocShell, NS_ERROR_FAILURE);

  mDocShell->SetOpener(aOpeningTab);

  // Make sure to set the item type on the docshell _before_ calling
  // Create() so it knows what type it is.
  nsCOMPtr<nsIDocShellTreeItem> docShellAsItem(do_QueryInterface(mDocShell));
  NS_ENSURE_TRUE(docShellAsItem, NS_ERROR_FAILURE);
  NS_ENSURE_SUCCESS(EnsureChromeTreeOwner(), NS_ERROR_FAILURE);

  docShellAsItem->SetTreeOwner(mChromeTreeOwner);
  docShellAsItem->SetItemType(nsIDocShellTreeItem::typeChrome);

  r.x = r.y = 0;
  nsCOMPtr<nsIBaseWindow> docShellAsWin(do_QueryInterface(mDocShell));
  NS_ENSURE_SUCCESS(docShellAsWin->InitWindow(nullptr, mWindow, 
   r.x, r.y, r.width, r.height), NS_ERROR_FAILURE);
  NS_ENSURE_SUCCESS(docShellAsWin->Create(), NS_ERROR_FAILURE);

  // Attach a WebProgress listener.during initialization...
  nsCOMPtr<nsIWebProgress> webProgress(do_GetInterface(mDocShell, &rv));
  if (webProgress) {
    webProgress->AddProgressListener(this, nsIWebProgress::NOTIFY_STATE_NETWORK);
  }

  // Eagerly create an about:blank content viewer with the right principal here,
  // rather than letting it happening in the upcoming call to
  // SetInitialPrincipalToSubject. This avoids creating the about:blank document
  // and then blowing it away with a second one, which can cause problems for the
  // top-level chrome window case. See bug 789773.
  if (nsContentUtils::IsInitialized()) { // Sometimes this happens really early  See bug 793370.
    rv = mDocShell->CreateAboutBlankContentViewer(nsContentUtils::SubjectPrincipal());
    NS_ENSURE_SUCCESS(rv, rv);
    nsCOMPtr<nsIDocument> doc = mDocShell ? mDocShell->GetDocument() : nullptr;
    NS_ENSURE_TRUE(!!doc, NS_ERROR_FAILURE);
    doc->SetIsInitialDocument(true);
  }

  if (nullptr != aUrl)  {
    nsCString tmpStr;

    rv = aUrl->GetSpec(tmpStr);
    if (NS_FAILED(rv)) return rv;

    NS_ConvertUTF8toUTF16 urlString(tmpStr);
    nsCOMPtr<nsIWebNavigation> webNav(do_QueryInterface(mDocShell));
    NS_ENSURE_TRUE(webNav, NS_ERROR_FAILURE);
    rv = webNav->LoadURI(urlString.get(),
                         nsIWebNavigation::LOAD_FLAGS_NONE,
                         nullptr,
                         nullptr,
                         nullptr);
    NS_ENSURE_SUCCESS(rv, rv);
  }
                     
  return rv;
}

nsIPresShell*
nsWebShellWindow::GetPresShell()
{
  if (!mDocShell)
    return nullptr;

  return mDocShell->GetPresShell();
}

bool
nsWebShellWindow::WindowMoved(nsIWidget* aWidget, int32_t x, int32_t y)
{
  nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
  if (pm) {
    nsCOMPtr<nsPIDOMWindow> window =
      mDocShell ? mDocShell->GetWindow() : nullptr;
    pm->AdjustPopupsOnWindowChange(window);
  }

  // Persist position, but not immediately, in case this OS is firing
  // repeated move events as the user drags the window
  SetPersistenceTimer(PAD_POSITION);
  return false;
}

bool
nsWebShellWindow::WindowResized(nsIWidget* aWidget, int32_t aWidth, int32_t aHeight)
{
  nsCOMPtr<nsIBaseWindow> shellAsWin(do_QueryInterface(mDocShell));
  if (shellAsWin) {
    shellAsWin->SetPositionAndSize(0, 0, aWidth, aHeight, false);
  }
  // Persist size, but not immediately, in case this OS is firing
  // repeated size events as the user drags the sizing handle
  if (!IsLocked())
    SetPersistenceTimer(PAD_POSITION | PAD_SIZE | PAD_MISC);
  return true;
}

bool
nsWebShellWindow::RequestWindowClose(nsIWidget* aWidget)
{
  // Maintain a reference to this as it is about to get destroyed.
  nsCOMPtr<nsIXULWindow> xulWindow(this);

  nsCOMPtr<nsPIDOMWindow> window(mDocShell ? mDocShell->GetWindow() : nullptr);
  nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(window);

  nsCOMPtr<nsIPresShell> presShell = mDocShell->GetPresShell();
  if (!presShell) {
    mozilla::DebugOnly<bool> dying;
    MOZ_ASSERT(NS_SUCCEEDED(mDocShell->IsBeingDestroyed(&dying)) && dying,
               "No presShell, but window is not being destroyed");
  } else if (eventTarget) {
    nsRefPtr<nsPresContext> presContext = presShell->GetPresContext();

    nsEventStatus status = nsEventStatus_eIgnore;
    WidgetMouseEvent event(true, NS_XUL_CLOSE, nullptr,
                           WidgetMouseEvent::eReal);
    if (NS_SUCCEEDED(eventTarget->DispatchDOMEvent(&event, nullptr, presContext, &status)) &&
        status == nsEventStatus_eConsumeNoDefault)
      return false;
  }

  Destroy();
  return false;
}

void
nsWebShellWindow::SizeModeChanged(nsSizeMode sizeMode)
{
  // An alwaysRaised (or higher) window will hide any newly opened normal
  // browser windows, so here we just drop a raised window to the normal
  // zlevel if it's maximized. We make no provision for automatically
  // re-raising it when restored.
  if (sizeMode == nsSizeMode_Maximized || sizeMode == nsSizeMode_Fullscreen) {
    uint32_t zLevel;
    GetZLevel(&zLevel);
    if (zLevel > nsIXULWindow::normalZ)
      SetZLevel(nsIXULWindow::normalZ);
  }
  mWindow->SetSizeMode(sizeMode);

  // Persist mode, but not immediately, because in many (all?)
  // cases this will merge with the similar call in NS_SIZE and
  // write the attribute values only once.
  SetPersistenceTimer(PAD_MISC);
  nsCOMPtr<nsPIDOMWindow> ourWindow =
    mDocShell ? mDocShell->GetWindow() : nullptr;
  if (ourWindow) {
    MOZ_ASSERT(ourWindow->IsOuterWindow());

    // Let the application know if it's in fullscreen mode so it
    // can update its UI.
    if (sizeMode == nsSizeMode_Fullscreen) {
      ourWindow->SetFullScreen(true);
    }
    else if (sizeMode != nsSizeMode_Minimized) {
      ourWindow->SetFullScreen(false);
    }

    // And always fire a user-defined sizemodechange event on the window
    ourWindow->DispatchCustomEvent(NS_LITERAL_STRING("sizemodechange"));
  }

  // Note the current implementation of SetSizeMode just stores
  // the new state; it doesn't actually resize. So here we store
  // the state and pass the event on to the OS. The day is coming
  // when we'll handle the event here, and the return result will
  // then need to be different.
}

void
nsWebShellWindow::OSToolbarButtonPressed()
{
  // Keep a reference as setting the chrome flags can fire events.
  nsCOMPtr<nsIXULWindow> xulWindow(this);

  // rjc: don't use "nsIWebBrowserChrome::CHROME_EXTRA"
  //      due to components with multiple sidebar components
  //      (such as Mail/News, Addressbook, etc)... and frankly,
  //      Mac IE, OmniWeb, and other Mac OS X apps all work this way
  uint32_t    chromeMask = (nsIWebBrowserChrome::CHROME_TOOLBAR |
                            nsIWebBrowserChrome::CHROME_LOCATIONBAR |
                            nsIWebBrowserChrome::CHROME_PERSONAL_TOOLBAR);

  nsCOMPtr<nsIWebBrowserChrome> wbc(do_GetInterface(xulWindow));
  if (!wbc)
    return;

  uint32_t    chromeFlags, newChromeFlags = 0;
  wbc->GetChromeFlags(&chromeFlags);
  newChromeFlags = chromeFlags & chromeMask;
  if (!newChromeFlags)    chromeFlags |= chromeMask;
  else                    chromeFlags &= (~newChromeFlags);
  wbc->SetChromeFlags(chromeFlags);
}

bool
nsWebShellWindow::ZLevelChanged(bool aImmediate, nsWindowZ *aPlacement,
                                nsIWidget* aRequestBelow, nsIWidget** aActualBelow)
{
  if (aActualBelow)
    *aActualBelow = nullptr;

  return ConstrainToZLevel(aImmediate, aPlacement, aRequestBelow, aActualBelow);
}

void
nsWebShellWindow::WindowActivated()
{
  nsCOMPtr<nsIXULWindow> xulWindow(this);

  // focusing the window could cause it to close, so keep a reference to it
  nsCOMPtr<nsIDOMWindow> window = mDocShell ? mDocShell->GetWindow() : nullptr;
  nsCOMPtr<nsIFocusManager> fm = do_GetService(FOCUSMANAGER_CONTRACTID);
  if (fm && window)
    fm->WindowRaised(window);

  if (mChromeLoaded) {
    PersistentAttributesDirty(PAD_POSITION | PAD_SIZE | PAD_MISC);
    SavePersistentAttributes();
   }
}

void
nsWebShellWindow::WindowDeactivated()
{
  nsCOMPtr<nsIXULWindow> xulWindow(this);

  nsCOMPtr<nsPIDOMWindow> window =
    mDocShell ? mDocShell->GetWindow() : nullptr;
  nsCOMPtr<nsIFocusManager> fm = do_GetService(FOCUSMANAGER_CONTRACTID);
  if (fm && window)
    fm->WindowLowered(window);
}

#ifdef USE_NATIVE_MENUS
static void LoadNativeMenus(nsIDOMDocument *aDOMDoc, nsIWidget *aParentWindow)
{
  // Find the menubar tag (if there is more than one, we ignore all but
  // the first).
  nsCOMPtr<nsIDOMNodeList> menubarElements;
  aDOMDoc->GetElementsByTagNameNS(NS_LITERAL_STRING("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"),
                                  NS_LITERAL_STRING("menubar"),
                                  getter_AddRefs(menubarElements));

  nsCOMPtr<nsIDOMNode> menubarNode;
  if (menubarElements)
    menubarElements->Item(0, getter_AddRefs(menubarNode));
  if (!menubarNode)
    return;

  nsCOMPtr<nsINativeMenuService> nms = do_GetService("@mozilla.org/widget/nativemenuservice;1");
  nsCOMPtr<nsIContent> menubarContent(do_QueryInterface(menubarNode));
  if (nms && menubarContent)
    nms->CreateNativeMenuBar(aParentWindow, menubarContent);
}
#endif

namespace mozilla {

class WebShellWindowTimerCallback MOZ_FINAL : public nsITimerCallback
{
public:
  explicit WebShellWindowTimerCallback(nsWebShellWindow* aWindow)
    : mWindow(aWindow)
  {}

  NS_DECL_THREADSAFE_ISUPPORTS

  NS_IMETHOD Notify(nsITimer* aTimer)
  {
    // Although this object participates in a refcount cycle (this -> mWindow
    // -> mSPTimer -> this), mSPTimer is a one-shot timer and releases this
    // after it fires.  So we don't need to release mWindow here.

    mWindow->FirePersistenceTimer();
    return NS_OK;
  }

private:
  ~WebShellWindowTimerCallback() {}

  nsRefPtr<nsWebShellWindow> mWindow;
};

NS_IMPL_ISUPPORTS(WebShellWindowTimerCallback, nsITimerCallback)

} // namespace mozilla

void
nsWebShellWindow::SetPersistenceTimer(uint32_t aDirtyFlags)
{
  MutexAutoLock lock(mSPTimerLock);
  if (!mSPTimer) {
    mSPTimer = do_CreateInstance("@mozilla.org/timer;1");
    if (!mSPTimer) {
      NS_WARNING("Couldn't create @mozilla.org/timer;1 instance?");
      return;
    }
  }

  nsRefPtr<WebShellWindowTimerCallback> callback =
    new WebShellWindowTimerCallback(this);
  mSPTimer->InitWithCallback(callback, SIZE_PERSISTENCE_TIMEOUT,
                             nsITimer::TYPE_ONE_SHOT);

  PersistentAttributesDirty(aDirtyFlags);
}

void
nsWebShellWindow::FirePersistenceTimer()
{
  MutexAutoLock lock(mSPTimerLock);
  SavePersistentAttributes();
}


//----------------------------------------
// nsIWebProgessListener implementation
//----------------------------------------
NS_IMETHODIMP
nsWebShellWindow::OnProgressChange(nsIWebProgress *aProgress,
                                   nsIRequest *aRequest,
                                   int32_t aCurSelfProgress,
                                   int32_t aMaxSelfProgress,
                                   int32_t aCurTotalProgress,
                                   int32_t aMaxTotalProgress)
{
  NS_NOTREACHED("notification excluded in AddProgressListener(...)");
  return NS_OK;
}

NS_IMETHODIMP
nsWebShellWindow::OnStateChange(nsIWebProgress *aProgress,
                                nsIRequest *aRequest,
                                uint32_t aStateFlags,
                                nsresult aStatus)
{
  // If the notification is not about a document finishing, then just
  // ignore it...
  if (!(aStateFlags & nsIWebProgressListener::STATE_STOP) || 
      !(aStateFlags & nsIWebProgressListener::STATE_IS_NETWORK)) {
    return NS_OK;
  }

  if (mChromeLoaded)
    return NS_OK;

  // If this document notification is for a frame then ignore it...
  nsCOMPtr<nsIDOMWindow> eventWin;
  aProgress->GetDOMWindow(getter_AddRefs(eventWin));
  nsCOMPtr<nsPIDOMWindow> eventPWin(do_QueryInterface(eventWin));
  if (eventPWin) {
    nsPIDOMWindow *rootPWin = eventPWin->GetPrivateRoot();
    if (eventPWin != rootPWin)
      return NS_OK;
  }

  mChromeLoaded = true;
  mLockedUntilChromeLoad = false;

#ifdef USE_NATIVE_MENUS
  ///////////////////////////////
  // Find the Menubar DOM  and Load the menus, hooking them up to the loaded commands
  ///////////////////////////////
  nsCOMPtr<nsIContentViewer> cv;
  mDocShell->GetContentViewer(getter_AddRefs(cv));
  if (cv) {
    nsCOMPtr<nsIDOMDocument> menubarDOMDoc(do_QueryInterface(cv->GetDocument()));
    if (menubarDOMDoc)
      LoadNativeMenus(menubarDOMDoc, mWindow);
  }
#endif // USE_NATIVE_MENUS

  OnChromeLoaded();
  LoadContentAreas();

  return NS_OK;
}

NS_IMETHODIMP
nsWebShellWindow::OnLocationChange(nsIWebProgress *aProgress,
                                   nsIRequest *aRequest,
                                   nsIURI *aURI,
                                   uint32_t aFlags)
{
  NS_NOTREACHED("notification excluded in AddProgressListener(...)");
  return NS_OK;
}

NS_IMETHODIMP 
nsWebShellWindow::OnStatusChange(nsIWebProgress* aWebProgress,
                                 nsIRequest* aRequest,
                                 nsresult aStatus,
                                 const char16_t* aMessage)
{
  NS_NOTREACHED("notification excluded in AddProgressListener(...)");
  return NS_OK;
}

NS_IMETHODIMP
nsWebShellWindow::OnSecurityChange(nsIWebProgress *aWebProgress,
                                   nsIRequest *aRequest,
                                   uint32_t state)
{
  NS_NOTREACHED("notification excluded in AddProgressListener(...)");
  return NS_OK;
}


//----------------------------------------

// if the main document URL specified URLs for any content areas, start them loading
void nsWebShellWindow::LoadContentAreas() {

  nsAutoString searchSpec;

  // fetch the chrome document URL
  nsCOMPtr<nsIContentViewer> contentViewer;
  // yes, it's possible for the docshell to be null even this early
  // see bug 57514.
  if (mDocShell)
    mDocShell->GetContentViewer(getter_AddRefs(contentViewer));
  if (contentViewer) {
    nsIDocument* doc = contentViewer->GetDocument();
    if (doc) {
      nsIURI* mainURL = doc->GetDocumentURI();

      nsCOMPtr<nsIURL> url = do_QueryInterface(mainURL);
      if (url) {
        nsAutoCString search;
        url->GetQuery(search);

        AppendUTF8toUTF16(search, searchSpec);
      }
    }
  }

  // content URLs are specified in the search part of the URL
  // as <contentareaID>=<escapedURL>[;(repeat)]
  if (!searchSpec.IsEmpty()) {
    int32_t     begPos,
                eqPos,
                endPos;
    nsString    contentAreaID,
                contentURL;
    char        *urlChar;
    nsresult rv;
    for (endPos = 0; endPos < (int32_t)searchSpec.Length(); ) {
      // extract contentAreaID and URL substrings
      begPos = endPos;
      eqPos = searchSpec.FindChar('=', begPos);
      if (eqPos < 0)
        break;

      endPos = searchSpec.FindChar(';', eqPos);
      if (endPos < 0)
        endPos = searchSpec.Length();
      searchSpec.Mid(contentAreaID, begPos, eqPos-begPos);
      searchSpec.Mid(contentURL, eqPos+1, endPos-eqPos-1);
      endPos++;

      // see if we have a docshell with a matching contentAreaID
      nsCOMPtr<nsIDocShellTreeItem> content;
      rv = GetContentShellById(contentAreaID.get(), getter_AddRefs(content));
      if (NS_SUCCEEDED(rv) && content) {
        nsCOMPtr<nsIWebNavigation> webNav(do_QueryInterface(content));
        if (webNav) {
          urlChar = ToNewCString(contentURL);
          if (urlChar) {
            nsUnescape(urlChar);
            contentURL.AssignWithConversion(urlChar);
            webNav->LoadURI(contentURL.get(),
                          nsIWebNavigation::LOAD_FLAGS_NONE,
                          nullptr,
                          nullptr,
                          nullptr);
            nsMemory::Free(urlChar);
          }
        }
      }
    }
  }
}

/**
 * ExecuteCloseHandler - Run the close handler, if any.
 * @return true iff we found a close handler to run.
 */
bool nsWebShellWindow::ExecuteCloseHandler()
{
  /* If the event handler closes this window -- a likely scenario --
     things get deleted out of order without this death grip.
     (The problem may be the death grip in nsWindow::windowProc,
     which forces this window's widget to remain alive longer
     than it otherwise would.) */
  nsCOMPtr<nsIXULWindow> kungFuDeathGrip(this);

  nsCOMPtr<EventTarget> eventTarget;
  if (mDocShell) {
    eventTarget = do_QueryInterface(mDocShell->GetWindow());
  }

  if (eventTarget) {
    nsCOMPtr<nsIContentViewer> contentViewer;
    mDocShell->GetContentViewer(getter_AddRefs(contentViewer));
    if (contentViewer) {
      nsRefPtr<nsPresContext> presContext;
      contentViewer->GetPresContext(getter_AddRefs(presContext));

      nsEventStatus status = nsEventStatus_eIgnore;
      WidgetMouseEvent event(true, NS_XUL_CLOSE, nullptr,
                             WidgetMouseEvent::eReal);

      nsresult rv =
        eventTarget->DispatchDOMEvent(&event, nullptr, presContext, &status);
      if (NS_SUCCEEDED(rv) && status == nsEventStatus_eConsumeNoDefault)
        return true;
      // else fall through and return false
    }
  }

  return false;
} // ExecuteCloseHandler

void nsWebShellWindow::ConstrainToOpenerScreen(int32_t* aX, int32_t* aY)
{
  if (mOpenerScreenRect.IsEmpty()) {
    *aX = *aY = 0;
    return;
  }

  int32_t left, top, width, height;
  // Constrain initial positions to the same screen as opener
  nsCOMPtr<nsIScreenManager> screenmgr = do_GetService("@mozilla.org/gfx/screenmanager;1");
  if (screenmgr) {
    nsCOMPtr<nsIScreen> screen;
    screenmgr->ScreenForRect(mOpenerScreenRect.x, mOpenerScreenRect.y,
                             mOpenerScreenRect.width, mOpenerScreenRect.height,
                             getter_AddRefs(screen));
    if (screen) {
      screen->GetAvailRectDisplayPix(&left, &top, &width, &height);
      if (*aX < left || *aX > left + width) {
        *aX = left;
      }
      if (*aY < top || *aY > top + height) {
        *aY = top;
      }
    }
  }
}

// nsIBaseWindow
NS_IMETHODIMP nsWebShellWindow::Destroy()
{
  nsresult rv;
  nsCOMPtr<nsIWebProgress> webProgress(do_GetInterface(mDocShell, &rv));
  if (webProgress) {
    webProgress->RemoveProgressListener(this);
  }

  nsCOMPtr<nsIXULWindow> kungFuDeathGrip(this);
  {
    MutexAutoLock lock(mSPTimerLock);
    if (mSPTimer) {
      mSPTimer->Cancel();
      SavePersistentAttributes();
      mSPTimer = nullptr;
    }
  }
  return nsXULWindow::Destroy();
}