xpfe/appshell/nsContentTreeOwner.cpp
author Andrew Osmond <aosmond@mozilla.com>
Tue, 14 Aug 2018 11:35:40 -0400
changeset 486540 69a4c2a0aac6e8bfc041a82b634611e1432af36b
parent 482117 7ebf84d0611e5c5ee7e7a615c1dfbe1853e042d7
child 494830 7a064423a1ad691c6ab8344fd81b469e0114480c
permissions -rw-r--r--
Bug 1446309 - Part 1. Return draw result from imgIContainer::GetImageContainerAtSize. r=tnikkel In addition to the image container, the draw result can also be useful for callers to know whether or not the surface(s) in the container are fully decoded or not. This is used in subsequent parts to avoid flickering in some cases.

/* -*- Mode: C++; tab-width: 3; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * vim: set ts=2 sw=2 et tw=79:
 *
 * 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/. */

// Local Includes
#include "nsContentTreeOwner.h"
#include "nsXULWindow.h"

// Helper Classes
#include "nsIServiceManager.h"
#include "nsAutoPtr.h"

// Interfaces needed to be included
#include "nsIDOMWindow.h"
#include "nsIDOMChromeWindow.h"
#include "nsIBrowserDOMWindow.h"
#include "nsIEmbeddingSiteWindow.h"
#include "nsIPrompt.h"
#include "nsIAuthPrompt.h"
#include "nsIWindowMediator.h"
#include "nsIXULBrowserWindow.h"
#include "nsIPrincipal.h"
#include "nsIURIFixup.h"
#include "nsCDefaultURIFixup.h"
#include "nsIWebNavigation.h"
#include "nsDocShellCID.h"
#include "nsIExternalURLHandlerService.h"
#include "nsIMIMEInfo.h"
#include "nsIWidget.h"
#include "nsWindowWatcher.h"
#include "mozilla/BrowserElementParent.h"
#include "mozilla/NullPrincipal.h"
#include "nsDocShellLoadInfo.h"

#include "nsIScriptObjectPrincipal.h"
#include "nsIURI.h"
#include "nsIDocument.h"
#if defined(XP_MACOSX)
#include "nsThreadUtils.h"
#endif

#include "mozilla/Preferences.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/ScriptSettings.h"

using namespace mozilla;

//*****************************************************************************
//*** nsSiteWindow declaration
//*****************************************************************************

class nsSiteWindow : public nsIEmbeddingSiteWindow
{
  // nsSiteWindow shares a lifetime with nsContentTreeOwner, and proxies it's
  // AddRef and Release calls to said object.
  // When nsContentTreeOwner is destroyed, nsSiteWindow will be destroyed as well.
  // nsContentTreeOwner is a friend class of nsSiteWindow such that it can call
  // nsSiteWindow's destructor, which is private, as public destructors
  // on reference counted classes are generally unsafe.
  friend class nsContentTreeOwner;

public:
  explicit nsSiteWindow(nsContentTreeOwner *aAggregator);

  NS_DECL_ISUPPORTS_INHERITED
  NS_DECL_NSIEMBEDDINGSITEWINDOW

private:
  virtual ~nsSiteWindow();
  nsContentTreeOwner *mAggregator;
};

//*****************************************************************************
//***    nsContentTreeOwner: Object Management
//*****************************************************************************

nsContentTreeOwner::nsContentTreeOwner(bool fPrimary) : mXULWindow(nullptr),
   mPrimary(fPrimary), mContentTitleSetting(false)
{
  // note if this fails, QI on nsIEmbeddingSiteWindow(2) will simply fail
  mSiteWindow = new nsSiteWindow(this);
}

nsContentTreeOwner::~nsContentTreeOwner()
{
  delete mSiteWindow;
}

//*****************************************************************************
// nsContentTreeOwner::nsISupports
//*****************************************************************************

NS_IMPL_ADDREF(nsContentTreeOwner)
NS_IMPL_RELEASE(nsContentTreeOwner)

NS_INTERFACE_MAP_BEGIN(nsContentTreeOwner)
   NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDocShellTreeOwner)
   NS_INTERFACE_MAP_ENTRY(nsIDocShellTreeOwner)
   NS_INTERFACE_MAP_ENTRY(nsIBaseWindow)
   NS_INTERFACE_MAP_ENTRY(nsIWebBrowserChrome)
   NS_INTERFACE_MAP_ENTRY(nsIWebBrowserChrome2)
   NS_INTERFACE_MAP_ENTRY(nsIWebBrowserChrome3)
   NS_INTERFACE_MAP_ENTRY(nsIInterfaceRequestor)
   NS_INTERFACE_MAP_ENTRY(nsIWindowProvider)
   // NOTE: This is using aggregation because there are some properties and
   // method on nsIBaseWindow (which we implement) and on
   // nsIEmbeddingSiteWindow (which we also implement) that have the same name.
   // And it just so happens that we want different behavior for these methods
   // and properties depending on the interface through which they're called
   // (SetFocus() is a good example here).  If it were not for that, we could
   // ditch the aggregation and just deal with not being able to use NS_DECL_*
   // macros for this stuff....
   NS_INTERFACE_MAP_ENTRY_AGGREGATED(nsIEmbeddingSiteWindow, mSiteWindow)
NS_INTERFACE_MAP_END

//*****************************************************************************
// nsContentTreeOwner::nsIInterfaceRequestor
//*****************************************************************************

NS_IMETHODIMP nsContentTreeOwner::GetInterface(const nsIID& aIID, void** aSink)
{
  NS_ENSURE_ARG_POINTER(aSink);
  *aSink = 0;

  if(aIID.Equals(NS_GET_IID(nsIPrompt))) {
    NS_ENSURE_STATE(mXULWindow);
    return mXULWindow->GetInterface(aIID, aSink);
  }
  if(aIID.Equals(NS_GET_IID(nsIAuthPrompt))) {
    NS_ENSURE_STATE(mXULWindow);
    return mXULWindow->GetInterface(aIID, aSink);
  }
  if (aIID.Equals(NS_GET_IID(nsIDocShellTreeItem))) {
    NS_ENSURE_STATE(mXULWindow);
    nsCOMPtr<nsIDocShell> shell;
    mXULWindow->GetDocShell(getter_AddRefs(shell));
    if (shell)
      return shell->QueryInterface(aIID, aSink);
    return NS_ERROR_FAILURE;
  }

  if (aIID.Equals(NS_GET_IID(nsIDOMWindow)) ||
      aIID.Equals(NS_GET_IID(nsPIDOMWindowOuter))) {
    NS_ENSURE_STATE(mXULWindow);
    nsCOMPtr<nsIDocShellTreeItem> shell;
    mXULWindow->GetPrimaryContentShell(getter_AddRefs(shell));
    if (shell) {
      nsCOMPtr<nsIInterfaceRequestor> thing(do_QueryInterface(shell));
      if (thing)
        return thing->GetInterface(aIID, aSink);
    }
    return NS_ERROR_FAILURE;
  }

  if (aIID.Equals(NS_GET_IID(nsIXULWindow))) {
    NS_ENSURE_STATE(mXULWindow);
    return mXULWindow->QueryInterface(aIID, aSink);
  }

  return QueryInterface(aIID, aSink);
}

//*****************************************************************************
// nsContentTreeOwner::nsIDocShellTreeOwner
//*****************************************************************************

NS_IMETHODIMP
nsContentTreeOwner::ContentShellAdded(nsIDocShellTreeItem* aContentShell,
                                      bool aPrimary)
{
  NS_ENSURE_STATE(mXULWindow);
  return mXULWindow->ContentShellAdded(aContentShell, aPrimary);
}

NS_IMETHODIMP
nsContentTreeOwner::ContentShellRemoved(nsIDocShellTreeItem* aContentShell)
{
  NS_ENSURE_STATE(mXULWindow);
  return mXULWindow->ContentShellRemoved(aContentShell);
}

NS_IMETHODIMP
nsContentTreeOwner::GetPrimaryContentShell(nsIDocShellTreeItem** aShell)
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->GetPrimaryContentShell(aShell);
}

NS_IMETHODIMP
nsContentTreeOwner::TabParentAdded(nsITabParent* aTab, bool aPrimary)
{
  NS_ENSURE_STATE(mXULWindow);
  return mXULWindow->TabParentAdded(aTab, aPrimary);
}

NS_IMETHODIMP
nsContentTreeOwner::TabParentRemoved(nsITabParent* aTab)
{
  NS_ENSURE_STATE(mXULWindow);
  return mXULWindow->TabParentRemoved(aTab);
}

NS_IMETHODIMP
nsContentTreeOwner::GetPrimaryTabParent(nsITabParent** aTab)
{
  NS_ENSURE_STATE(mXULWindow);
  return mXULWindow->GetPrimaryTabParent(aTab);
}

NS_IMETHODIMP
nsContentTreeOwner::GetPrimaryContentSize(int32_t* aWidth,
                                          int32_t* aHeight)
{
  NS_ENSURE_STATE(mXULWindow);
  return mXULWindow->GetPrimaryContentSize(aWidth, aHeight);
}

NS_IMETHODIMP
nsContentTreeOwner::SetPrimaryContentSize(int32_t aWidth,
                                          int32_t aHeight)
{
  NS_ENSURE_STATE(mXULWindow);
  return mXULWindow->SetPrimaryContentSize(aWidth, aHeight);
}

NS_IMETHODIMP
nsContentTreeOwner::GetRootShellSize(int32_t* aWidth,
                                     int32_t* aHeight)
{
  NS_ENSURE_STATE(mXULWindow);
  return mXULWindow->GetRootShellSize(aWidth, aHeight);
}

NS_IMETHODIMP
nsContentTreeOwner::SetRootShellSize(int32_t aWidth,
                                     int32_t aHeight)
{
  NS_ENSURE_STATE(mXULWindow);
  return mXULWindow->SetRootShellSize(aWidth, aHeight);
}

NS_IMETHODIMP nsContentTreeOwner::SizeShellTo(nsIDocShellTreeItem* aShellItem,
   int32_t aCX, int32_t aCY)
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->SizeShellTo(aShellItem, aCX, aCY);
}

NS_IMETHODIMP
nsContentTreeOwner::SetPersistence(bool aPersistPosition,
                                   bool aPersistSize,
                                   bool aPersistSizeMode)
{
  NS_ENSURE_STATE(mXULWindow);
  nsCOMPtr<dom::Element> docShellElement = mXULWindow->GetWindowDOMElement();
  if (!docShellElement)
    return NS_ERROR_FAILURE;

  nsAutoString persistString;
  docShellElement->GetAttribute(NS_LITERAL_STRING("persist"), persistString);

  bool saveString = false;
  int32_t index;

  // Set X
  index = persistString.Find("screenX");
  if (!aPersistPosition && index >= 0) {
    persistString.Cut(index, 7);
    saveString = true;
  } else if (aPersistPosition && index < 0) {
    persistString.AppendLiteral(" screenX");
    saveString = true;
  }
  // Set Y
  index = persistString.Find("screenY");
  if (!aPersistPosition && index >= 0) {
    persistString.Cut(index, 7);
    saveString = true;
  } else if (aPersistPosition && index < 0) {
    persistString.AppendLiteral(" screenY");
    saveString = true;
  }
  // Set CX
  index = persistString.Find("width");
  if (!aPersistSize && index >= 0) {
    persistString.Cut(index, 5);
    saveString = true;
  } else if (aPersistSize && index < 0) {
    persistString.AppendLiteral(" width");
    saveString = true;
  }
  // Set CY
  index = persistString.Find("height");
  if (!aPersistSize && index >= 0) {
    persistString.Cut(index, 6);
    saveString = true;
  } else if (aPersistSize && index < 0) {
    persistString.AppendLiteral(" height");
    saveString = true;
  }
  // Set SizeMode
  index = persistString.Find("sizemode");
  if (!aPersistSizeMode && (index >= 0)) {
    persistString.Cut(index, 8);
    saveString = true;
  } else if (aPersistSizeMode && (index < 0)) {
    persistString.AppendLiteral(" sizemode");
    saveString = true;
  }

  ErrorResult rv;
  if(saveString) {
    docShellElement->SetAttribute(NS_LITERAL_STRING("persist"), persistString, rv);
  }

  return NS_OK;
}

NS_IMETHODIMP
nsContentTreeOwner::GetPersistence(bool* aPersistPosition,
                                   bool* aPersistSize,
                                   bool* aPersistSizeMode)
{
  NS_ENSURE_STATE(mXULWindow);
  nsCOMPtr<dom::Element> docShellElement = mXULWindow->GetWindowDOMElement();
  if (!docShellElement)
    return NS_ERROR_FAILURE;

  nsAutoString persistString;
  docShellElement->GetAttribute(NS_LITERAL_STRING("persist"), persistString);

  // data structure doesn't quite match the question, but it's close enough
  // for what we want (since this method is never actually called...)
  if (aPersistPosition)
    *aPersistPosition = persistString.Find("screenX") >= 0 || persistString.Find("screenY") >= 0 ? true : false;
  if (aPersistSize)
    *aPersistSize = persistString.Find("width") >= 0 || persistString.Find("height") >= 0 ? true : false;
  if (aPersistSizeMode)
    *aPersistSizeMode = persistString.Find("sizemode") >= 0 ? true : false;

  return NS_OK;
}

NS_IMETHODIMP
nsContentTreeOwner::GetTabCount(uint32_t* aResult)
{
  if (mXULWindow) {
    return mXULWindow->GetTabCount(aResult);
  }

  *aResult = 0;
  return NS_OK;
}

NS_IMETHODIMP
nsContentTreeOwner::GetHasPrimaryContent(bool* aResult)
{
  NS_ENSURE_STATE(mXULWindow);
  return mXULWindow->GetHasPrimaryContent(aResult);
}

//*****************************************************************************
// nsContentTreeOwner::nsIWebBrowserChrome3
//*****************************************************************************

NS_IMETHODIMP nsContentTreeOwner::OnBeforeLinkTraversal(const nsAString &originalTarget,
                                                        nsIURI *linkURI,
                                                        nsINode *linkNode,
                                                        bool isAppTab,
                                                        nsAString &_retval)
{
  NS_ENSURE_STATE(mXULWindow);

  nsCOMPtr<nsIXULBrowserWindow> xulBrowserWindow;
  mXULWindow->GetXULBrowserWindow(getter_AddRefs(xulBrowserWindow));

  if (xulBrowserWindow)
    return xulBrowserWindow->OnBeforeLinkTraversal(originalTarget, linkURI,
                                                   linkNode, isAppTab, _retval);

  _retval = originalTarget;
  return NS_OK;
}

NS_IMETHODIMP nsContentTreeOwner::ShouldLoadURI(nsIDocShell *aDocShell,
                                                nsIURI *aURI,
                                                nsIURI *aReferrer,
                                                bool aHasPostData,
                                                nsIPrincipal* aTriggeringPrincipal,
                                                bool *_retval)
{
  NS_ENSURE_STATE(mXULWindow);

  nsCOMPtr<nsIXULBrowserWindow> xulBrowserWindow;
  mXULWindow->GetXULBrowserWindow(getter_AddRefs(xulBrowserWindow));

  if (xulBrowserWindow)
    return xulBrowserWindow->ShouldLoadURI(aDocShell, aURI, aReferrer, aHasPostData,
                                           aTriggeringPrincipal, _retval);

  *_retval = true;
  return NS_OK;
}

NS_IMETHODIMP nsContentTreeOwner::ShouldLoadURIInThisProcess(nsIURI* aURI,
                                                             bool* aRetVal)
{
  MOZ_ASSERT_UNREACHABLE("Should only be called in child process.");
  *aRetVal = true;
  return NS_OK;
}

NS_IMETHODIMP nsContentTreeOwner::ReloadInFreshProcess(nsIDocShell* aDocShell,
                                                       nsIURI* aURI,
                                                       nsIURI* aReferrer,
                                                       nsIPrincipal* aTriggeringPrincipal,
                                                       uint32_t aLoadFlags,
                                                       bool* aRetVal)
{
  NS_WARNING("Cannot reload in fresh process from a nsContentTreeOwner!");
  *aRetVal = false;
  return NS_OK;
}

//*****************************************************************************
// nsContentTreeOwner::nsIWebBrowserChrome2
//*****************************************************************************

NS_IMETHODIMP nsContentTreeOwner::SetStatusWithContext(uint32_t aStatusType,
                                                       const nsAString &aStatusText,
                                                       nsISupports *aStatusContext)
{
  // We only allow the status to be set from the primary content shell
  if (!mPrimary && aStatusType != STATUS_LINK)
    return NS_OK;

  NS_ENSURE_STATE(mXULWindow);

  nsCOMPtr<nsIXULBrowserWindow> xulBrowserWindow;
  mXULWindow->GetXULBrowserWindow(getter_AddRefs(xulBrowserWindow));

  if (xulBrowserWindow)
  {
    switch(aStatusType)
    {
    case STATUS_LINK:
      {
        nsCOMPtr<dom::Element> element = do_QueryInterface(aStatusContext);
        xulBrowserWindow->SetOverLink(aStatusText, element);
        break;
      }
    }
  }

  return NS_OK;
}

//*****************************************************************************
// nsContentTreeOwner::nsIWebBrowserChrome
//*****************************************************************************

NS_IMETHODIMP nsContentTreeOwner::SetStatus(uint32_t aStatusType,
                                            const char16_t* aStatus)
{
  return SetStatusWithContext(aStatusType,
      aStatus ? static_cast<const nsString &>(nsDependentString(aStatus))
              : EmptyString(),
      nullptr);
}

NS_IMETHODIMP nsContentTreeOwner::SetWebBrowser(nsIWebBrowser* aWebBrowser)
{
   NS_ERROR("Haven't Implemented this yet");
   return NS_ERROR_FAILURE;
}

NS_IMETHODIMP nsContentTreeOwner::GetWebBrowser(nsIWebBrowser** aWebBrowser)
{
  // Unimplemented, and probably will remain so; xpfe windows have docshells,
  // not webbrowsers.
  NS_ENSURE_ARG_POINTER(aWebBrowser);
  *aWebBrowser = 0;
  return NS_ERROR_FAILURE;
}

NS_IMETHODIMP nsContentTreeOwner::SetChromeFlags(uint32_t aChromeFlags)
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->SetChromeFlags(aChromeFlags);
}

NS_IMETHODIMP nsContentTreeOwner::GetChromeFlags(uint32_t* aChromeFlags)
{
  NS_ENSURE_STATE(mXULWindow);
  return mXULWindow->GetChromeFlags(aChromeFlags);
}

NS_IMETHODIMP nsContentTreeOwner::DestroyBrowserWindow()
{
   NS_ERROR("Haven't Implemented this yet");
   return NS_ERROR_FAILURE;
}

NS_IMETHODIMP nsContentTreeOwner::SizeBrowserTo(int32_t aCX, int32_t aCY)
{
   NS_ERROR("Haven't Implemented this yet");
   return NS_ERROR_FAILURE;
}

NS_IMETHODIMP nsContentTreeOwner::ShowAsModal()
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->ShowModal();
}

NS_IMETHODIMP nsContentTreeOwner::IsWindowModal(bool *_retval)
{
  NS_ENSURE_STATE(mXULWindow);
  *_retval = mXULWindow->mContinueModalLoop;
  return NS_OK;
}

NS_IMETHODIMP nsContentTreeOwner::ExitModalEventLoop(nsresult aStatus)
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->ExitModalLoop(aStatus);
}

//*****************************************************************************
// nsContentTreeOwner::nsIBaseWindow
//*****************************************************************************

NS_IMETHODIMP nsContentTreeOwner::InitWindow(nativeWindow aParentNativeWindow,
   nsIWidget* parentWidget, int32_t x, int32_t y, int32_t cx, int32_t cy)
{
   // Ignore wigdet parents for now.  Don't think those are a vaild thing to call.
   NS_ENSURE_SUCCESS(SetPositionAndSize(x, y, cx, cy, 0), NS_ERROR_FAILURE);

   return NS_OK;
}

NS_IMETHODIMP nsContentTreeOwner::Create()
{
   NS_ASSERTION(false, "You can't call this");
   return NS_ERROR_UNEXPECTED;
}

NS_IMETHODIMP nsContentTreeOwner::Destroy()
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->Destroy();
}

NS_IMETHODIMP nsContentTreeOwner::GetUnscaledDevicePixelsPerCSSPixel(double* aScale)
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->GetUnscaledDevicePixelsPerCSSPixel(aScale);
}

NS_IMETHODIMP nsContentTreeOwner::GetDevicePixelsPerDesktopPixel(double* aScale)
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->GetDevicePixelsPerDesktopPixel(aScale);
}

NS_IMETHODIMP nsContentTreeOwner::SetPositionDesktopPix(int32_t aX, int32_t aY)
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->SetPositionDesktopPix(aX, aY);
}

NS_IMETHODIMP nsContentTreeOwner::SetPosition(int32_t aX, int32_t aY)
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->SetPosition(aX, aY);
}

NS_IMETHODIMP nsContentTreeOwner::GetPosition(int32_t* aX, int32_t* aY)
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->GetPosition(aX, aY);
}

NS_IMETHODIMP nsContentTreeOwner::SetSize(int32_t aCX, int32_t aCY, bool aRepaint)
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->SetSize(aCX, aCY, aRepaint);
}

NS_IMETHODIMP nsContentTreeOwner::GetSize(int32_t* aCX, int32_t* aCY)
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->GetSize(aCX, aCY);
}

NS_IMETHODIMP nsContentTreeOwner::SetPositionAndSize(int32_t aX, int32_t aY,
   int32_t aCX, int32_t aCY, uint32_t aFlags)
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->SetPositionAndSize(aX, aY, aCX, aCY, aFlags);
}

NS_IMETHODIMP nsContentTreeOwner::GetPositionAndSize(int32_t* aX, int32_t* aY,
   int32_t* aCX, int32_t* aCY)
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->GetPositionAndSize(aX, aY, aCX, aCY);
}

NS_IMETHODIMP nsContentTreeOwner::Repaint(bool aForce)
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->Repaint(aForce);
}

NS_IMETHODIMP nsContentTreeOwner::GetParentWidget(nsIWidget** aParentWidget)
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->GetParentWidget(aParentWidget);
}

NS_IMETHODIMP nsContentTreeOwner::SetParentWidget(nsIWidget* aParentWidget)
{
   NS_ASSERTION(false, "You can't call this");
   return NS_ERROR_NOT_IMPLEMENTED;
}

NS_IMETHODIMP nsContentTreeOwner::GetParentNativeWindow(nativeWindow* aParentNativeWindow)
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->GetParentNativeWindow(aParentNativeWindow);
}

NS_IMETHODIMP nsContentTreeOwner::SetParentNativeWindow(nativeWindow aParentNativeWindow)
{
   NS_ASSERTION(false, "You can't call this");
   return NS_ERROR_NOT_IMPLEMENTED;
}

NS_IMETHODIMP nsContentTreeOwner::GetNativeHandle(nsAString& aNativeHandle)
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->GetNativeHandle(aNativeHandle);
}

NS_IMETHODIMP nsContentTreeOwner::GetVisibility(bool* aVisibility)
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->GetVisibility(aVisibility);
}

NS_IMETHODIMP nsContentTreeOwner::SetVisibility(bool aVisibility)
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->SetVisibility(aVisibility);
}

NS_IMETHODIMP nsContentTreeOwner::GetEnabled(bool *aEnabled)
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->GetEnabled(aEnabled);
}

NS_IMETHODIMP nsContentTreeOwner::SetEnabled(bool aEnable)
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->SetEnabled(aEnable);
}

NS_IMETHODIMP nsContentTreeOwner::GetMainWidget(nsIWidget** aMainWidget)
{
   NS_ENSURE_ARG_POINTER(aMainWidget);
   NS_ENSURE_STATE(mXULWindow);

   *aMainWidget = mXULWindow->mWindow;
   NS_IF_ADDREF(*aMainWidget);

   return NS_OK;
}

NS_IMETHODIMP nsContentTreeOwner::SetFocus()
{
   NS_ENSURE_STATE(mXULWindow);
   return mXULWindow->SetFocus();
}

NS_IMETHODIMP nsContentTreeOwner::GetTitle(nsAString& aTitle)
{
   NS_ENSURE_STATE(mXULWindow);

   return mXULWindow->GetTitle(aTitle);
}

NS_IMETHODIMP nsContentTreeOwner::SetTitle(const nsAString& aTitle)
{
   // We only allow the title to be set from the primary content shell
  if(!mPrimary || !mContentTitleSetting)
    return NS_OK;

  NS_ENSURE_STATE(mXULWindow);

  nsAutoString   title;
  nsAutoString   docTitle(aTitle);

  if (docTitle.IsEmpty())
    docTitle.Assign(mTitleDefault);

  if (!docTitle.IsEmpty()) {
    if (!mTitlePreface.IsEmpty()) {
      // Title will be: "Preface: Doc Title - Mozilla"
      title.Assign(mTitlePreface);
      title.Append(docTitle);
    }
    else {
      // Title will be: "Doc Title - Mozilla"
      title = docTitle;
    }

    if (!mWindowTitleModifier.IsEmpty())
      title += mTitleSeparator + mWindowTitleModifier;
  }
  else
    title.Assign(mWindowTitleModifier); // Title will just be plain "Mozilla"

  //
  // if there is no location bar we modify the title to display at least
  // the scheme and host (if any) as an anti-spoofing measure.
  //
  nsCOMPtr<dom::Element> docShellElement = mXULWindow->GetWindowDOMElement();

  if (docShellElement) {
    nsAutoString chromeString;
    docShellElement->GetAttribute(NS_LITERAL_STRING("chromehidden"), chromeString);
    if (chromeString.Find(NS_LITERAL_STRING("location")) != kNotFound) {
      //
      // location bar is turned off, find the browser location
      //
      // use the document's ContentPrincipal to find the true owner
      // in case of javascript: or data: documents
      //
      nsCOMPtr<nsIDocShellTreeItem> dsitem;
      GetPrimaryContentShell(getter_AddRefs(dsitem));
      nsCOMPtr<nsIScriptObjectPrincipal> doc =
        do_QueryInterface(dsitem ? dsitem->GetDocument() : nullptr);
      if (doc) {
        nsCOMPtr<nsIURI> uri;
        nsIPrincipal* principal = doc->GetPrincipal();
        if (principal) {
          principal->GetURI(getter_AddRefs(uri));
          if (uri) {
            //
            // remove any user:pass information
            //
            nsCOMPtr<nsIURIFixup> fixup(do_GetService(NS_URIFIXUP_CONTRACTID));
            if (fixup) {
              nsCOMPtr<nsIURI> tmpuri;
              nsresult rv = fixup->CreateExposableURI(uri,getter_AddRefs(tmpuri));
              if (NS_SUCCEEDED(rv) && tmpuri) {
                // (don't bother if there's no host)
                nsAutoCString host;
                nsAutoCString prepath;
                tmpuri->GetHost(host);
                tmpuri->GetPrePath(prepath);
                if (!host.IsEmpty()) {
                  //
                  // We have a scheme/host, update the title
                  //
                  title.Insert(NS_ConvertUTF8toUTF16(prepath) +
                               mTitleSeparator, 0);
                }
              }
            }
          }
        }
      }
    }
    nsIDocument* document = docShellElement->OwnerDoc();
    ErrorResult rv;
    document->SetTitle(title, rv);
    return rv.StealNSResult();
  }

  return mXULWindow->SetTitle(title);
}

//*****************************************************************************
// nsContentTreeOwner: nsIWindowProvider
//*****************************************************************************
NS_IMETHODIMP
nsContentTreeOwner::ProvideWindow(mozIDOMWindowProxy* aParent,
                                  uint32_t aChromeFlags,
                                  bool aCalledFromJS,
                                  bool aPositionSpecified,
                                  bool aSizeSpecified,
                                  nsIURI* aURI,
                                  const nsAString& aName,
                                  const nsACString& aFeatures,
                                  bool aForceNoOpener,
                                  nsDocShellLoadInfo* aLoadInfo,
                                  bool* aWindowIsNew,
                                  mozIDOMWindowProxy** aReturn)
{
  NS_ENSURE_ARG_POINTER(aParent);

  auto* parent = nsPIDOMWindowOuter::From(aParent);

  *aReturn = nullptr;

  if (!mXULWindow) {
    // Nothing to do here
    return NS_OK;
  }

#ifdef DEBUG
  nsCOMPtr<nsIWebNavigation> parentNav = do_GetInterface(aParent);
  nsCOMPtr<nsIDocShellTreeOwner> parentOwner = do_GetInterface(parentNav);
  NS_ASSERTION(SameCOMIdentity(parentOwner,
                               static_cast<nsIDocShellTreeOwner*>(this)),
               "Parent from wrong docshell tree?");
#endif

  // If aParent is inside an <iframe mozbrowser> and this isn't a request to
  // open a modal-type window, we're going to create a new <iframe mozbrowser>
  // and return its window here.
  nsCOMPtr<nsIDocShell> docshell = do_GetInterface(aParent);
  if (docshell && docshell->GetIsInMozBrowser() &&
      !(aChromeFlags & (nsIWebBrowserChrome::CHROME_MODAL |
                        nsIWebBrowserChrome::CHROME_OPENAS_DIALOG |
                        nsIWebBrowserChrome::CHROME_OPENAS_CHROME))) {

    BrowserElementParent::OpenWindowResult opened =
      BrowserElementParent::OpenWindowInProcess(parent, aURI, aName,
                                                aFeatures, aForceNoOpener, aReturn);

    // If OpenWindowInProcess handled the open (by opening it or blocking the
    // popup), tell our caller not to proceed trying to create a new window
    // through other means.
    if (opened != BrowserElementParent::OPEN_WINDOW_IGNORED) {
      *aWindowIsNew = opened == BrowserElementParent::OPEN_WINDOW_ADDED;
      return *aWindowIsNew ? NS_OK : NS_ERROR_ABORT;
    }

    // If we're in an app and the target is _blank, send the url to the OS
    if (aName.LowerCaseEqualsLiteral("_blank")) {
      nsCOMPtr<nsIExternalURLHandlerService> exUrlServ(
                        do_GetService(NS_EXTERNALURLHANDLERSERVICE_CONTRACTID));
      if (exUrlServ) {

        nsCOMPtr<nsIHandlerInfo> info;
        bool found;
        exUrlServ->GetURLHandlerInfoFromOS(aURI, &found, getter_AddRefs(info));

        if (info && found) {
          info->LaunchWithURI(aURI, nullptr);
          return NS_ERROR_ABORT;
        }

      }
    }
  }

  int32_t openLocation =
    nsWindowWatcher::GetWindowOpenLocation(parent, aChromeFlags, aCalledFromJS,
                                           aPositionSpecified, aSizeSpecified);

  if (openLocation != nsIBrowserDOMWindow::OPEN_NEWTAB &&
      openLocation != nsIBrowserDOMWindow::OPEN_CURRENTWINDOW) {
    // Just open a window normally
    return NS_OK;
  }

  nsCOMPtr<mozIDOMWindowProxy> domWin;
  mXULWindow->GetWindowDOMWindow(getter_AddRefs(domWin));
  nsCOMPtr<nsIDOMChromeWindow> chromeWin = do_QueryInterface(domWin);
  if (!chromeWin) {
    // Really odd... but whatever
    NS_WARNING("nsXULWindow's DOMWindow is not a chrome window");
    return NS_OK;
  }

  nsCOMPtr<nsIBrowserDOMWindow> browserDOMWin;
  chromeWin->GetBrowserDOMWindow(getter_AddRefs(browserDOMWin));
  if (!browserDOMWin) {
    return NS_OK;
  }

  *aWindowIsNew = (openLocation != nsIBrowserDOMWindow::OPEN_CURRENTWINDOW);

  {
    dom::AutoNoJSAPI nojsapi;

    uint32_t flags = nsIBrowserDOMWindow::OPEN_NEW;
    if (aForceNoOpener) {
      flags |= nsIBrowserDOMWindow::OPEN_NO_OPENER;
    }

    // Get a new rendering area from the browserDOMWin.
    // Since we are not loading any URI, we follow the principle of least
    // privilege and use a nullPrincipal as the triggeringPrincipal.
    //
    // This method handles setting the opener for us, so we don't need to set it
    // ourselves.
    RefPtr<NullPrincipal> nullPrincipal = NullPrincipal::CreateWithoutOriginAttributes();
    return browserDOMWin->CreateContentWindow(aURI, aParent, openLocation,
                                              flags, nullPrincipal, aReturn);
  }
}

//*****************************************************************************
// nsContentTreeOwner: Accessors
//*****************************************************************************

#if defined(XP_MACOSX)
class nsContentTitleSettingEvent : public Runnable
{
public:
  nsContentTitleSettingEvent(dom::Element* dse, const nsAString& wtm)
    : Runnable("nsContentTitleSettingEvent"),
      mElement(dse),
      mTitleDefault(wtm) {}

  NS_IMETHOD Run() override
  {
    ErrorResult rv;
    mElement->SetAttribute(NS_LITERAL_STRING("titledefault"), mTitleDefault, rv);
    mElement->RemoveAttribute(NS_LITERAL_STRING("titlemodifier"), rv);
    return NS_OK;
  }

private:
  nsCOMPtr<dom::Element> mElement;
  nsString mTitleDefault;
};
#endif

void nsContentTreeOwner::XULWindow(nsXULWindow* aXULWindow)
{
   mXULWindow = aXULWindow;
   if (mXULWindow && mPrimary) {
      // Get the window title modifiers
      nsCOMPtr<dom::Element> docShellElement = mXULWindow->GetWindowDOMElement();

      nsAutoString   contentTitleSetting;

      if(docShellElement)
         {
         docShellElement->GetAttribute(NS_LITERAL_STRING("contenttitlesetting"), contentTitleSetting);
         if(contentTitleSetting.EqualsLiteral("true"))
            {
            mContentTitleSetting = true;
            docShellElement->GetAttribute(NS_LITERAL_STRING("titledefault"), mTitleDefault);
            docShellElement->GetAttribute(NS_LITERAL_STRING("titlemodifier"), mWindowTitleModifier);
            docShellElement->GetAttribute(NS_LITERAL_STRING("titlepreface"), mTitlePreface);

#if defined(XP_MACOSX)
            // On OS X, treat the titlemodifier like it's the titledefault, and don't ever append
            // the separator + appname.
            if (mTitleDefault.IsEmpty()) {
                NS_DispatchToCurrentThread(
                    new nsContentTitleSettingEvent(docShellElement,
                                                   mWindowTitleModifier));
                mTitleDefault = mWindowTitleModifier;
                mWindowTitleModifier.Truncate();
            }
#endif
            docShellElement->GetAttribute(NS_LITERAL_STRING("titlemenuseparator"), mTitleSeparator);
            }
         }
      else
         {
         NS_ERROR("This condition should never happen.  If it does, "
            "we just won't get a modifier, but it still shouldn't happen.");
         }
      }
}

nsXULWindow* nsContentTreeOwner::XULWindow()
{
   return mXULWindow;
}

//*****************************************************************************
//*** nsSiteWindow implementation
//*****************************************************************************

nsSiteWindow::nsSiteWindow(nsContentTreeOwner *aAggregator)
{
  mAggregator = aAggregator;
}

nsSiteWindow::~nsSiteWindow()
{
}

NS_IMPL_ADDREF_USING_AGGREGATOR(nsSiteWindow, mAggregator)
NS_IMPL_RELEASE_USING_AGGREGATOR(nsSiteWindow, mAggregator)

NS_INTERFACE_MAP_BEGIN(nsSiteWindow)
  NS_INTERFACE_MAP_ENTRY(nsISupports)
  NS_INTERFACE_MAP_ENTRY(nsIEmbeddingSiteWindow)
NS_INTERFACE_MAP_END_AGGREGATED(mAggregator)

NS_IMETHODIMP
nsSiteWindow::SetDimensions(uint32_t aFlags,
                    int32_t aX, int32_t aY, int32_t aCX, int32_t aCY)
{
  // XXX we're ignoring aFlags
  return mAggregator->SetPositionAndSize(aX, aY, aCX, aCY,
                                         nsIBaseWindow::eRepaint);
}

NS_IMETHODIMP
nsSiteWindow::GetDimensions(uint32_t aFlags,
                    int32_t *aX, int32_t *aY, int32_t *aCX, int32_t *aCY)
{
  // XXX we're ignoring aFlags
  return mAggregator->GetPositionAndSize(aX, aY, aCX, aCY);
}

NS_IMETHODIMP
nsSiteWindow::SetFocus(void)
{
#if 0
  /* This implementation focuses the main document and could make sense.
     However this method is actually being used from within
     nsGlobalWindow::Focus (providing a hook for MDI embedding apps)
     and it's better for our purposes to not pick a document and
     focus it, but allow nsGlobalWindow to carry on unhindered.
  */
  nsXULWindow *window = mAggregator->XULWindow();
  if (window) {
    nsCOMPtr<nsIDocShell> docshell;
    window->GetDocShell(getter_AddRefs(docshell));
    if (docShell) {
      nsCOMPtr<nsPIDOMWindowOuter> domWindow(docShell->GetWindow());
      if (domWindow)
        domWindow->Focus();
    }
  }
#endif
  return NS_OK;
}

/* this implementation focuses another window. if there isn't another
   window to focus, we do nothing. */
NS_IMETHODIMP
nsSiteWindow::Blur(void)
{
  NS_DEFINE_CID(kWindowMediatorCID, NS_WINDOWMEDIATOR_CID);

  nsCOMPtr<nsISimpleEnumerator> windowEnumerator;
  nsCOMPtr<nsIXULWindow>        xulWindow;
  bool                          more, foundUs;
  nsXULWindow                  *ourWindow = mAggregator->XULWindow();

  {
    nsCOMPtr<nsIWindowMediator> windowMediator(do_GetService(kWindowMediatorCID));
    if (windowMediator)
      windowMediator->GetZOrderXULWindowEnumerator(0, true,
                        getter_AddRefs(windowEnumerator));
  }

  if (!windowEnumerator)
    return NS_ERROR_FAILURE;

  // step through the top-level windows
  foundUs = false;
  windowEnumerator->HasMoreElements(&more);
  while (more) {

    nsCOMPtr<nsISupports>  nextWindow;
    nsCOMPtr<nsIXULWindow> nextXULWindow;

    windowEnumerator->GetNext(getter_AddRefs(nextWindow));
    nextXULWindow = do_QueryInterface(nextWindow);

    // got it!(?)
    if (foundUs) {
      xulWindow = nextXULWindow;
      break;
    }

    // remember the very first one, in case we have to wrap
    if (!xulWindow)
      xulWindow = nextXULWindow;

    // look for us
    if (nextXULWindow == ourWindow)
      foundUs = true;

    windowEnumerator->HasMoreElements(&more);
  }

  // change focus to the window we just found
  if (xulWindow) {
    nsCOMPtr<nsIDocShell> docshell;
    xulWindow->GetDocShell(getter_AddRefs(docshell));
    if (!docshell) {
      return NS_OK;
    }

    nsCOMPtr<nsPIDOMWindowOuter> domWindow = docshell->GetWindow();
    if (domWindow)
      domWindow->Focus();
  }
  return NS_OK;
}

NS_IMETHODIMP
nsSiteWindow::GetVisibility(bool *aVisibility)
{
  return mAggregator->GetVisibility(aVisibility);
}

NS_IMETHODIMP
nsSiteWindow::SetVisibility(bool aVisibility)
{
  return mAggregator->SetVisibility(aVisibility);
}

NS_IMETHODIMP
nsSiteWindow::GetTitle(nsAString& aTitle)
{
  return mAggregator->GetTitle(aTitle);
}

NS_IMETHODIMP
nsSiteWindow::SetTitle(const nsAString& aTitle)
{
  return mAggregator->SetTitle(aTitle);
}

NS_IMETHODIMP
nsSiteWindow::GetSiteWindow(void **aSiteWindow)
{
  return mAggregator->GetParentNativeWindow(aSiteWindow);
}