summaryrefslogtreecommitdiffstats
path: root/xpfe/appshell/nsWebShellWindow.cpp
blob: 2893e78682c38d6f148a402fb864d5292c3d5bce (plain)
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
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
/* -*- 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"

#include "nsPIWindowRoot.h"

#if defined(XP_MACOSX) || defined(MOZ_WIDGET_GTK)
#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")
  , mWidgetListenerDelegate(this)
{
}

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,
                                      mozIDOMWindowProxy *aOpenerWindow,
                                      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
  DesktopIntRect deskRect(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(&mWidgetListenerDelegate);
  rv = mWindow->Create((nsIWidget *)parentWidget, // Parent nsIWidget
                       nullptr,                   // Native parent widget
                       deskRect,                  // Widget dimensions
                       &widgetInitData);          // Widget initialization data
  NS_ENSURE_SUCCESS(rv, rv);

  LayoutDeviceIntRect r = mWindow->GetClientBounds();
  // 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);
  }

  if (aOpenerWindow) {
    nsPIDOMWindowOuter* window = mDocShell->GetWindow();
    MOZ_ASSERT(window);
    window->SetOpenerWindow(nsPIDOMWindowOuter::From(aOpenerWindow), true);
  }

  // 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.
  // Note that we don't accept expanded principals here, similar to
  // SetInitialPrincipalToSubject.
  if (nsContentUtils::IsInitialized()) { // Sometimes this happens really early  See bug 793370.
    MOZ_ASSERT(mDocShell->ItemType() == nsIDocShellTreeItem::typeChrome);
    nsCOMPtr<nsIPrincipal> principal = nsContentUtils::SubjectPrincipalOrSystemIfNativeCaller();
    if (nsContentUtils::IsExpandedPrincipal(principal)) {
      principal = nullptr;
    }
    rv = mDocShell->CreateAboutBlankContentViewer(principal);
    NS_ENSURE_SUCCESS(rv, rv);
    nsCOMPtr<nsIDocument> doc = mDocShell->GetDocument();
    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<nsPIDOMWindowOuter> window =
      mDocShell ? mDocShell->GetWindow() : nullptr;
    pm->AdjustPopupsOnWindowChange(window);
  }

  // Notify all tabs that the widget moved.
  if (mDocShell && mDocShell->GetWindow()) {
    nsCOMPtr<EventTarget> eventTarget = mDocShell->GetWindow()->GetTopWindowRoot();
    nsContentUtils::DispatchChromeEvent(mDocShell->GetDocument(),
                                        eventTarget,
                                        NS_LITERAL_STRING("MozUpdateWindowPos"),
                                        false, false, nullptr);
  }

  // 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, 0);
  }
  // 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<nsPIDOMWindowOuter> 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) {
    RefPtr<nsPresContext> presContext = presShell->GetPresContext();

    nsEventStatus status = nsEventStatus_eIgnore;
    WidgetMouseEvent event(true, eClose, 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<nsPIDOMWindowOuter> ourWindow =
    mDocShell ? mDocShell->GetWindow() : nullptr;
  if (ourWindow) {
    MOZ_ASSERT(ourWindow->IsOuterWindow());

    // Ensure that the fullscreen state is synchronized between
    // the widget and the outer window object.
    if (sizeMode == nsSizeMode_Fullscreen) {
      ourWindow->SetFullScreen(true);
    }
    else if (sizeMode != nsSizeMode_Minimized) {
      if (ourWindow->GetFullScreen()) {
        // The first SetFullscreenInternal call below ensures that we do
        // not trigger any fullscreen transition even if the window was
        // put in fullscreen only for the Fullscreen API. The second
        // SetFullScreen call ensures that the window really exit from
        // fullscreen even if it entered fullscreen for both Fullscreen
        // Mode and Fullscreen API.
        ourWindow->SetFullscreenInternal(FullscreenReason::ForForceExitFullscreen, false);
        ourWindow->SetFullScreen(false);
      }
    }

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

  nsIPresShell* presShell;
  if ((presShell = GetPresShell())) {
    presShell->GetPresContext()->SizeModeChanged(sizeMode);
  }

  // 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::UIResolutionChanged()
{
  nsCOMPtr<nsPIDOMWindowOuter> ourWindow =
    mDocShell ? mDocShell->GetWindow() : nullptr;
  if (ourWindow) {
    MOZ_ASSERT(ourWindow->IsOuterWindow());
    ourWindow->DispatchCustomEvent(NS_LITERAL_STRING("resolutionchange"));
  }
}

void
nsWebShellWindow::FullscreenChanged(bool aInFullscreen)
{
  if (mDocShell) {
    if (nsCOMPtr<nsPIDOMWindowOuter> ourWindow = mDocShell->GetWindow()) {
      ourWindow->FinishFullscreenChange(aInFullscreen);
    }
  }
}

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<nsPIDOMWindowOuter> 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<nsPIDOMWindowOuter> 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)
{
  nsCOMPtr<nsINativeMenuService> nms = do_GetService("@mozilla.org/widget/nativemenuservice;1");
  if (!nms) {
    return;
  }

  // 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) {
    nsCOMPtr<nsIContent> menubarContent(do_QueryInterface(menubarNode));
    nms->CreateNativeMenuBar(aParentWindow, menubarContent);
  } else {
    nms->CreateNativeMenuBar(aParentWindow, nullptr);
  }
}
#endif

namespace mozilla {

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

  NS_DECL_THREADSAFE_ISUPPORTS

  NS_IMETHOD Notify(nsITimer* aTimer) override
  {
    // 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() {}

  RefPtr<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;
    }
  }

  RefPtr<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<mozIDOMWindowProxy> eventWin;
  aProgress->GetDOMWindow(getter_AddRefs(eventWin));
  auto* eventPWin = nsPIDOMWindowOuter::From(eventWin);
  if (eventPWin) {
    nsPIDOMWindowOuter *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);
            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) {
      RefPtr<nsPresContext> presContext;
      contentViewer->GetPresContext(getter_AddRefs(presContext));

      nsEventStatus status = nsEventStatus_eIgnore;
      WidgetMouseEvent event(true, eClose, 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();
}

nsIXULWindow*
nsWebShellWindow::WidgetListenerDelegate::GetXULWindow()
{
  return mWebShellWindow->GetXULWindow();
}

nsIPresShell*
nsWebShellWindow::WidgetListenerDelegate::GetPresShell()
{
  return mWebShellWindow->GetPresShell();
}

bool
nsWebShellWindow::WidgetListenerDelegate::WindowMoved(
  nsIWidget* aWidget, int32_t aX, int32_t aY)
{
  RefPtr<nsWebShellWindow> holder = mWebShellWindow;
  return holder->WindowMoved(aWidget, aX, aY);
}

bool
nsWebShellWindow::WidgetListenerDelegate::WindowResized(
  nsIWidget* aWidget, int32_t aWidth, int32_t aHeight)
{
  RefPtr<nsWebShellWindow> holder = mWebShellWindow;
  return holder->WindowResized(aWidget, aWidth, aHeight);
}

bool
nsWebShellWindow::WidgetListenerDelegate::RequestWindowClose(nsIWidget* aWidget)
{
  RefPtr<nsWebShellWindow> holder = mWebShellWindow;
  return holder->RequestWindowClose(aWidget);
}

void
nsWebShellWindow::WidgetListenerDelegate::SizeModeChanged(nsSizeMode aSizeMode)
{
  RefPtr<nsWebShellWindow> holder = mWebShellWindow;
  holder->SizeModeChanged(aSizeMode);
}

void
nsWebShellWindow::WidgetListenerDelegate::UIResolutionChanged()
{
  RefPtr<nsWebShellWindow> holder = mWebShellWindow;
  holder->UIResolutionChanged();
}

void
nsWebShellWindow::WidgetListenerDelegate::FullscreenChanged(bool aInFullscreen)
{
  RefPtr<nsWebShellWindow> holder = mWebShellWindow;
  holder->FullscreenChanged(aInFullscreen);
}

void
nsWebShellWindow::WidgetListenerDelegate::OSToolbarButtonPressed()
{
  RefPtr<nsWebShellWindow> holder = mWebShellWindow;
  holder->OSToolbarButtonPressed();
}

bool
nsWebShellWindow::WidgetListenerDelegate::ZLevelChanged(
  bool aImmediate, nsWindowZ *aPlacement, nsIWidget* aRequestBelow,
  nsIWidget** aActualBelow)
{
  RefPtr<nsWebShellWindow> holder = mWebShellWindow;
  return holder->ZLevelChanged(aImmediate,
                               aPlacement,
                               aRequestBelow,
                               aActualBelow);
}

void
nsWebShellWindow::WidgetListenerDelegate::WindowActivated()
{
  RefPtr<nsWebShellWindow> holder = mWebShellWindow;
  holder->WindowActivated();
}

void
nsWebShellWindow::WidgetListenerDelegate::WindowDeactivated()
{
  RefPtr<nsWebShellWindow> holder = mWebShellWindow;
  holder->WindowDeactivated();
}