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c27923da49
gecko/dom/ipc/TabChild.cpp
Chris Jones d31b38514b Bug 781725: Refactor TabChild to allow pre-created instances, and then use a pre-created instance to pre-load and compile BrowserElementChild.js. r=smaug 
--HG--
extra : rebase_source : f063c672d55da46541fdd1b6f6ff0cf510a6853f
2012-08-29 12:26:18 -03:00

1547 lines
43 KiB
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/* -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 8; -*- */
/* vim: set sw=2 sts=2 ts=8 et tw=80 : */
/* 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 "base/basictypes.h"
#include "TabChild.h"
#include "BasicLayers.h"
#include "Blob.h"
#include "ContentChild.h"
#include "IndexedDBChild.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/IntentionalCrash.h"
#include "mozilla/docshell/OfflineCacheUpdateChild.h"
#include "mozilla/dom/PContentChild.h"
#include "mozilla/dom/PContentDialogChild.h"
#include "mozilla/ipc/DocumentRendererChild.h"
#include "mozilla/layers/CompositorChild.h"
#include "mozilla/layers/PLayersChild.h"
#include "mozilla/layout/RenderFrameChild.h"
#include "mozilla/StaticPtr.h"
#include "mozilla/unused.h"
#include "nsComponentManagerUtils.h"
#include "nsComponentManagerUtils.h"
#include "nsContentUtils.h"
#include "nsEmbedCID.h"
#include "nsEventListenerManager.h"
#include "nsIBaseWindow.h"
#include "nsIComponentManager.h"
#include "nsIDOMClassInfo.h"
#include "nsIDOMEvent.h"
#include "nsIDOMWindow.h"
#include "nsIDOMWindowUtils.h"
#include "nsIDocShell.h"
#include "nsIDocShellTreeItem.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIJSContextStack.h"
#include "nsIJSRuntimeService.h"
#include "nsISSLStatusProvider.h"
#include "nsIScriptContext.h"
#include "nsIScriptGlobalObject.h"
#include "nsIScriptSecurityManager.h"
#include "nsISecureBrowserUI.h"
#include "nsIServiceManager.h"
#include "nsISupportsImpl.h"
#include "nsIURI.h"
#include "nsIView.h"
#include "nsIWebBrowser.h"
#include "nsIWebBrowserFocus.h"
#include "nsIWebBrowserSetup.h"
#include "nsIWebProgress.h"
#include "nsIXPCSecurityManager.h"
#include "nsInterfaceHashtable.h"
#include "nsPIDOMWindow.h"
#include "nsPIWindowRoot.h"
#include "nsPresContext.h"
#include "nsPrintfCString.h"
#include "nsScriptLoader.h"
#include "nsSerializationHelper.h"
#include "nsThreadUtils.h"
#include "nsWeakReference.h"
#include "PCOMContentPermissionRequestChild.h"
#include "PuppetWidget.h"
#include "StructuredCloneUtils.h"
#include "xpcpublic.h"
#define BROWSER_ELEMENT_CHILD_SCRIPT \
NS_LITERAL_STRING("chrome://global/content/BrowserElementChild.js")
using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::ipc;
using namespace mozilla::layers;
using namespace mozilla::layout;
using namespace mozilla::docshell;
using namespace mozilla::dom::indexedDB;
using namespace mozilla::widget;
NS_IMPL_ISUPPORTS1(ContentListener, nsIDOMEventListener)
NS_IMETHODIMP
ContentListener::HandleEvent(nsIDOMEvent* aEvent)
{
RemoteDOMEvent remoteEvent;
remoteEvent.mEvent = do_QueryInterface(aEvent);
NS_ENSURE_STATE(remoteEvent.mEvent);
mTabChild->SendEvent(remoteEvent);
return NS_OK;
}
class ContentDialogChild : public PContentDialogChild
{
public:
virtual bool Recv__delete__(const InfallibleTArray<int>& aIntParams,
const InfallibleTArray<nsString>& aStringParams);
};
StaticRefPtr<TabChild> sPreallocatedTab;
/*static*/ void
TabChild::PreloadSlowThings()
{
MOZ_ASSERT(!sPreallocatedTab);
nsRefPtr<TabChild> tab(new TabChild(0, false,
nsIScriptSecurityManager::NO_APP_ID));
if (!NS_SUCCEEDED(tab->Init()) ||
!tab->InitTabChildGlobal(DONT_LOAD_SCRIPTS)) {
return;
}
tab->TryCacheLoadAndCompileScript(BROWSER_ELEMENT_CHILD_SCRIPT);
sPreallocatedTab = tab;
ClearOnShutdown(&sPreallocatedTab);
}
/*static*/ already_AddRefed<TabChild>
TabChild::Create(uint32_t aChromeFlags,
bool aIsBrowserElement, uint32_t aAppId)
{
if (sPreallocatedTab &&
sPreallocatedTab->mChromeFlags == aChromeFlags &&
(aIsBrowserElement ||
aAppId != nsIScriptSecurityManager::NO_APP_ID)) {
nsRefPtr<TabChild> child = sPreallocatedTab.get();
sPreallocatedTab = nullptr;
MOZ_ASSERT(!child->mTriedBrowserInit);
child->SetAppBrowserConfig(aIsBrowserElement, aAppId);
return child.forget();
}
nsRefPtr<TabChild> iframe = new TabChild(aChromeFlags, aIsBrowserElement,
aAppId);
return NS_SUCCEEDED(iframe->Init()) ? iframe.forget() : nullptr;
}
TabChild::TabChild(uint32_t aChromeFlags, bool aIsBrowserElement,
uint32_t aAppId)
: mRemoteFrame(nullptr)
, mTabChildGlobal(nullptr)
, mChromeFlags(aChromeFlags)
, mOuterRect(0, 0, 0, 0)
, mLastBackgroundColor(NS_RGB(255, 255, 255))
, mAppId(aAppId)
, mDidFakeShow(false)
, mIsBrowserElement(aIsBrowserElement)
, mNotified(false)
, mTriedBrowserInit(false)
{
printf("creating %d!\n", NS_IsMainThread());
}
nsresult
TabChild::Observe(nsISupports *aSubject,
const char *aTopic,
const PRUnichar *aData)
{
if (!strcmp(aTopic, "cancel-default-pan-zoom")) {
nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(aSubject));
nsCOMPtr<nsITabChild> tabChild(GetTabChildFrom(docShell));
if (tabChild == this) {
mRemoteFrame->CancelDefaultPanZoom();
}
} else if (!strcmp(aTopic, "browser-zoom-to-rect")) {
nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(aSubject));
nsCOMPtr<nsITabChild> tabChild(GetTabChildFrom(docShell));
if (tabChild == this) {
gfxRect rect;
sscanf(NS_ConvertUTF16toUTF8(aData).get(),
"{\"x\":%lf,\"y\":%lf,\"w\":%lf,\"h\":%lf}",
&rect.x, &rect.y, &rect.width, &rect.height);
SendZoomToRect(rect);
}
}
return NS_OK;
}
nsresult
TabChild::Init()
{
nsCOMPtr<nsIWebBrowser> webBrowser = do_CreateInstance(NS_WEBBROWSER_CONTRACTID);
if (!webBrowser) {
NS_ERROR("Couldn't create a nsWebBrowser?");
return NS_ERROR_FAILURE;
}
webBrowser->SetContainerWindow(this);
mWebNav = do_QueryInterface(webBrowser);
NS_ASSERTION(mWebNav, "nsWebBrowser doesn't implement nsIWebNavigation?");
nsCOMPtr<nsIDocShellTreeItem> docShellItem(do_QueryInterface(mWebNav));
docShellItem->SetItemType(nsIDocShellTreeItem::typeContentWrapper);
nsCOMPtr<nsIBaseWindow> baseWindow = do_QueryInterface(mWebNav);
if (!baseWindow) {
NS_ERROR("mWebNav doesn't QI to nsIBaseWindow");
return false;
}
mWidget = nsIWidget::CreatePuppetWidget(this);
if (!mWidget) {
NS_ERROR("couldn't create fake widget");
return false;
}
mWidget->Create(
nullptr, 0, // no parents
nsIntRect(nsIntPoint(0, 0), nsIntSize(0, 0)),
nullptr, // HandleWidgetEvent
nullptr // nsDeviceContext
);
baseWindow->InitWindow(0, mWidget, 0, 0, 0, 0);
baseWindow->Create();
SetAppBrowserConfig(mIsBrowserElement, mAppId);
// IPC uses a WebBrowser object for which DNS prefetching is turned off
// by default. But here we really want it, so enable it explicitly
nsCOMPtr<nsIWebBrowserSetup> webBrowserSetup =
do_QueryInterface(baseWindow);
if (webBrowserSetup) {
webBrowserSetup->SetProperty(nsIWebBrowserSetup::SETUP_ALLOW_DNS_PREFETCH,
true);
} else {
NS_WARNING("baseWindow doesn't QI to nsIWebBrowserSetup, skipping "
"DNS prefetching enable step.");
}
return NS_OK;
}
void
TabChild::SetAppBrowserConfig(bool aIsBrowserElement, uint32_t aAppId)
{
mIsBrowserElement = aIsBrowserElement;
mAppId = aAppId;
nsCOMPtr<nsIDocShell> docShell = do_GetInterface(mWebNav);
MOZ_ASSERT(docShell);
if (docShell) {
docShell->SetAppId(mAppId);
if (mIsBrowserElement) {
docShell->SetIsBrowserElement();
}
}
}
NS_INTERFACE_MAP_BEGIN(TabChild)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIWebBrowserChrome)
NS_INTERFACE_MAP_ENTRY(nsIWebBrowserChrome)
NS_INTERFACE_MAP_ENTRY(nsIWebBrowserChrome2)
NS_INTERFACE_MAP_ENTRY(nsIEmbeddingSiteWindow)
NS_INTERFACE_MAP_ENTRY(nsIWebBrowserChromeFocus)
NS_INTERFACE_MAP_ENTRY(nsIInterfaceRequestor)
NS_INTERFACE_MAP_ENTRY(nsIWindowProvider)
NS_INTERFACE_MAP_ENTRY(nsITabChild)
NS_INTERFACE_MAP_ENTRY(nsIDialogCreator)
NS_INTERFACE_MAP_ENTRY(nsSupportsWeakReference)
NS_INTERFACE_MAP_END
NS_IMPL_ADDREF(TabChild)
NS_IMPL_RELEASE(TabChild)
NS_IMETHODIMP
TabChild::SetStatus(uint32_t aStatusType, const PRUnichar* aStatus)
{
// FIXME/bug 617804: should the platform support this?
return NS_OK;
}
NS_IMETHODIMP
TabChild::GetWebBrowser(nsIWebBrowser** aWebBrowser)
{
NS_NOTREACHED("TabChild::GetWebBrowser not supported in TabChild");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
TabChild::SetWebBrowser(nsIWebBrowser* aWebBrowser)
{
NS_NOTREACHED("TabChild::SetWebBrowser not supported in TabChild");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
TabChild::GetChromeFlags(uint32_t* aChromeFlags)
{
*aChromeFlags = mChromeFlags;
return NS_OK;
}
NS_IMETHODIMP
TabChild::SetChromeFlags(uint32_t aChromeFlags)
{
NS_NOTREACHED("trying to SetChromeFlags from content process?");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
TabChild::DestroyBrowserWindow()
{
NS_NOTREACHED("TabChild::SetWebBrowser not supported in TabChild");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
TabChild::SizeBrowserTo(int32_t aCX, int32_t aCY)
{
NS_NOTREACHED("TabChild::SizeBrowserTo not supported in TabChild");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
TabChild::ShowAsModal()
{
NS_NOTREACHED("TabChild::ShowAsModal not supported in TabChild");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
TabChild::IsWindowModal(bool* aRetVal)
{
*aRetVal = false;
return NS_OK;
}
NS_IMETHODIMP
TabChild::ExitModalEventLoop(nsresult aStatus)
{
NS_NOTREACHED("TabChild::ExitModalEventLoop not supported in TabChild");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
TabChild::SetStatusWithContext(uint32_t aStatusType,
const nsAString& aStatusText,
nsISupports* aStatusContext)
{
// FIXME/bug 617804: should the platform support this?
return NS_OK;
}
NS_IMETHODIMP
TabChild::SetDimensions(uint32_t aFlags, int32_t aX, int32_t aY,
int32_t aCx, int32_t aCy)
{
NS_NOTREACHED("TabChild::SetDimensions not supported in TabChild");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
TabChild::GetDimensions(uint32_t aFlags, int32_t* aX,
int32_t* aY, int32_t* aCx, int32_t* aCy)
{
if (aX) {
*aX = mOuterRect.x;
}
if (aY) {
*aY = mOuterRect.y;
}
if (aCx) {
*aCx = mOuterRect.width;
}
if (aCy) {
*aCy = mOuterRect.height;
}
return NS_OK;
}
NS_IMETHODIMP
TabChild::SetFocus()
{
NS_NOTREACHED("TabChild::SetFocus not supported in TabChild");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
TabChild::GetVisibility(bool* aVisibility)
{
*aVisibility = true;
return NS_OK;
}
NS_IMETHODIMP
TabChild::SetVisibility(bool aVisibility)
{
// should the platform support this? Bug 666365
return NS_OK;
}
NS_IMETHODIMP
TabChild::GetTitle(PRUnichar** aTitle)
{
NS_NOTREACHED("TabChild::GetTitle not supported in TabChild");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
TabChild::SetTitle(const PRUnichar* aTitle)
{
// FIXME/bug 617804: should the platform support this?
return NS_OK;
}
NS_IMETHODIMP
TabChild::GetSiteWindow(void** aSiteWindow)
{
NS_NOTREACHED("TabChild::GetSiteWindow not supported in TabChild");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
TabChild::Blur()
{
NS_NOTREACHED("TabChild::Blur not supported in TabChild");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
TabChild::FocusNextElement()
{
SendMoveFocus(true);
return NS_OK;
}
NS_IMETHODIMP
TabChild::FocusPrevElement()
{
SendMoveFocus(false);
return NS_OK;
}
NS_IMETHODIMP
TabChild::GetInterface(const nsIID & aIID, void **aSink)
{
// XXXbz should we restrict the set of interfaces we hand out here?
// See bug 537429
return QueryInterface(aIID, aSink);
}
NS_IMETHODIMP
TabChild::ProvideWindow(nsIDOMWindow* aParent, uint32_t aChromeFlags,
bool aCalledFromJS,
bool aPositionSpecified, bool aSizeSpecified,
nsIURI* aURI, const nsAString& aName,
const nsACString& aFeatures, bool* aWindowIsNew,
nsIDOMWindow** aReturn)
{
*aReturn = nullptr;
// 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->GetIsBelowContentBoundary() &&
!(aChromeFlags & (nsIWebBrowserChrome::CHROME_MODAL |
nsIWebBrowserChrome::CHROME_OPENAS_DIALOG |
nsIWebBrowserChrome::CHROME_OPENAS_CHROME))) {
// Note that BrowserFrameProvideWindow may return NS_ERROR_ABORT if the
// open window call was canceled. It's important that we pass this error
// code back to our caller.
return BrowserFrameProvideWindow(aParent, aURI, aName, aFeatures,
aWindowIsNew, aReturn);
}
// Otherwise, create a new top-level window.
PBrowserChild* newChild;
if (!CallCreateWindow(&newChild)) {
return NS_ERROR_NOT_AVAILABLE;
}
*aWindowIsNew = true;
nsCOMPtr<nsIDOMWindow> win =
do_GetInterface(static_cast<TabChild*>(newChild)->mWebNav);
win.forget(aReturn);
return NS_OK;
}
nsresult
TabChild::BrowserFrameProvideWindow(nsIDOMWindow* aOpener,
nsIURI* aURI,
const nsAString& aName,
const nsACString& aFeatures,
bool* aWindowIsNew,
nsIDOMWindow** aReturn)
{
*aReturn = nullptr;
uint32_t chromeFlags = 0;
nsRefPtr<TabChild> newChild = new TabChild(chromeFlags,
mIsBrowserElement, mAppId);
if (!NS_SUCCEEDED(newChild->Init())) {
return NS_ERROR_ABORT;
}
unused << Manager()->SendPBrowserConstructor(
// We release this ref in DeallocPBrowserChild
nsRefPtr<TabChild>(newChild).forget().get(),
chromeFlags, mIsBrowserElement, this);
nsCAutoString spec;
if (aURI) {
aURI->GetSpec(spec);
}
NS_ConvertUTF8toUTF16 url(spec);
nsString name(aName);
NS_ConvertUTF8toUTF16 features(aFeatures);
newChild->SendBrowserFrameOpenWindow(this, url, name,
features, aWindowIsNew);
if (!*aWindowIsNew) {
PBrowserChild::Send__delete__(newChild);
return NS_ERROR_ABORT;
}
// Unfortunately we don't get a window unless we've shown the frame. That's
// pretty bogus; see bug 763602.
newChild->DoFakeShow();
nsCOMPtr<nsIDOMWindow> win = do_GetInterface(newChild->mWebNav);
win.forget(aReturn);
return NS_OK;
}
static nsInterfaceHashtable<nsPtrHashKey<PContentDialogChild>, nsIDialogParamBlock> gActiveDialogs;
NS_IMETHODIMP
TabChild::OpenDialog(uint32_t aType, const nsACString& aName,
const nsACString& aFeatures,
nsIDialogParamBlock* aArguments,
nsIDOMElement* aFrameElement)
{
if (!gActiveDialogs.IsInitialized()) {
gActiveDialogs.Init();
}
InfallibleTArray<int32_t> intParams;
InfallibleTArray<nsString> stringParams;
ParamsToArrays(aArguments, intParams, stringParams);
PContentDialogChild* dialog =
SendPContentDialogConstructor(aType, nsCString(aName),
nsCString(aFeatures), intParams, stringParams);
gActiveDialogs.Put(dialog, aArguments);
nsIThread *thread = NS_GetCurrentThread();
while (gActiveDialogs.GetWeak(dialog)) {
if (!NS_ProcessNextEvent(thread)) {
break;
}
}
return NS_OK;
}
bool
ContentDialogChild::Recv__delete__(const InfallibleTArray<int>& aIntParams,
const InfallibleTArray<nsString>& aStringParams)
{
nsCOMPtr<nsIDialogParamBlock> params;
if (gActiveDialogs.Get(this, getter_AddRefs(params))) {
TabChild::ArraysToParams(aIntParams, aStringParams, params);
gActiveDialogs.Remove(this);
}
return true;
}
void
TabChild::ParamsToArrays(nsIDialogParamBlock* aParams,
InfallibleTArray<int>& aIntParams,
InfallibleTArray<nsString>& aStringParams)
{
if (aParams) {
for (int32_t i = 0; i < 8; ++i) {
int32_t val = 0;
aParams->GetInt(i, &val);
aIntParams.AppendElement(val);
}
int32_t j = 0;
nsXPIDLString strVal;
while (NS_SUCCEEDED(aParams->GetString(j, getter_Copies(strVal)))) {
aStringParams.AppendElement(strVal);
++j;
}
}
}
void
TabChild::ArraysToParams(const InfallibleTArray<int>& aIntParams,
const InfallibleTArray<nsString>& aStringParams,
nsIDialogParamBlock* aParams)
{
if (aParams) {
for (int32_t i = 0; uint32_t(i) < aIntParams.Length(); ++i) {
aParams->SetInt(i, aIntParams[i]);
}
for (int32_t j = 0; uint32_t(j) < aStringParams.Length(); ++j) {
aParams->SetString(j, aStringParams[j].get());
}
}
}
void
TabChild::DestroyWindow()
{
nsCOMPtr<nsIBaseWindow> baseWindow = do_QueryInterface(mWebNav);
if (baseWindow)
baseWindow->Destroy();
// NB: the order of mWidget->Destroy() and mRemoteFrame->Destroy()
// is important: we want to kill off remote layers before their
// frames
if (mWidget) {
mWidget->Destroy();
}
if (mRemoteFrame) {
mRemoteFrame->Destroy();
mRemoteFrame = nullptr;
}
}
bool
TabChild::UseDirectCompositor()
{
return !!CompositorChild::Get();
}
void
TabChild::ActorDestroy(ActorDestroyReason why)
{
if (mTabChildGlobal) {
// The messageManager relays messages via the TabChild which
// no longer exists.
static_cast<nsFrameMessageManager*>
(mTabChildGlobal->mMessageManager.get())->Disconnect();
mTabChildGlobal->mMessageManager = nullptr;
}
}
TabChild::~TabChild()
{
DestroyWindow();
nsCOMPtr<nsIWebBrowser> webBrowser = do_QueryInterface(mWebNav);
if (webBrowser) {
webBrowser->SetContainerWindow(nullptr);
}
if (mCx) {
DestroyCx();
}
if (mTabChildGlobal) {
nsEventListenerManager* elm = mTabChildGlobal->GetListenerManager(false);
if (elm) {
elm->Disconnect();
}
mTabChildGlobal->mTabChild = nullptr;
}
}
bool
TabChild::RecvLoadURL(const nsCString& uri)
{
printf("loading %s, %d\n", uri.get(), NS_IsMainThread());
nsresult rv = mWebNav->LoadURI(NS_ConvertUTF8toUTF16(uri).get(),
nsIWebNavigation::LOAD_FLAGS_NONE,
NULL, NULL, NULL);
if (NS_FAILED(rv)) {
NS_WARNING("mWebNav->LoadURI failed. Eating exception, what else can I do?");
}
return true;
}
void
TabChild::DoFakeShow()
{
RecvShow(nsIntSize(0, 0));
mDidFakeShow = true;
}
bool
TabChild::RecvShow(const nsIntSize& size)
{
if (mDidFakeShow) {
return true;
}
printf("[TabChild] SHOW (w,h)= (%d, %d)\n", size.width, size.height);
nsCOMPtr<nsIBaseWindow> baseWindow = do_QueryInterface(mWebNav);
if (!baseWindow) {
NS_ERROR("mWebNav doesn't QI to nsIBaseWindow");
return false;
}
if (!InitRenderingState()) {
// We can fail to initialize our widget if the <browser
// remote> has already been destroyed, and we couldn't hook
// into the parent-process's layer system. That's not a fatal
// error.
return true;
}
baseWindow->SetVisibility(true);
return InitTabChildGlobal();
}
bool
TabChild::RecvUpdateDimensions(const nsRect& rect, const nsIntSize& size)
{
#ifdef DEBUG
printf("[TabChild] Update Dimensions to (x,y,w,h)= (%ud, %ud, %ud, %ud) and move to (w,h)= (%ud, %ud)\n", rect.x, rect.y, rect.width, rect.height, size.width, size.height);
#endif
if (!mRemoteFrame) {
return true;
}
mOuterRect.x = rect.x;
mOuterRect.y = rect.y;
mOuterRect.width = rect.width;
mOuterRect.height = rect.height;
mWidget->Resize(0, 0, size.width, size.height,
true);
nsCOMPtr<nsIBaseWindow> baseWin = do_QueryInterface(mWebNav);
baseWin->SetPositionAndSize(0, 0, size.width, size.height,
true);
return true;
}
void
TabChild::DispatchMessageManagerMessage(const nsAString& aMessageName,
const nsACString& aJSONData)
{
JSAutoRequest ar(mCx);
jsval json = JSVAL_NULL;
StructuredCloneData cloneData;
JSAutoStructuredCloneBuffer buffer;
if (JS_ParseJSON(mCx,
static_cast<const jschar*>(NS_ConvertUTF8toUTF16(aJSONData).get()),
aJSONData.Length(),
&json)) {
WriteStructuredClone(mCx, json, buffer, cloneData.mClosure);
cloneData.mData = buffer.data();
cloneData.mDataLength = buffer.nbytes();
}
nsFrameScriptCx cx(static_cast<nsIWebBrowserChrome*>(this), this);
// Let the BrowserElementScrolling helper (if it exists) for this
// content manipulate the frame state.
nsRefPtr<nsFrameMessageManager> mm =
static_cast<nsFrameMessageManager*>(mTabChildGlobal->mMessageManager.get());
mm->ReceiveMessage(static_cast<nsIDOMEventTarget*>(mTabChildGlobal),
aMessageName, false, &cloneData, nullptr, nullptr);
}
bool
TabChild::RecvUpdateFrame(const FrameMetrics& aFrameMetrics)
{
if (!mCx || !mTabChildGlobal) {
return true;
}
nsCString data;
data += nsPrintfCString("{ \"x\" : %d", NS_lround(aFrameMetrics.mViewportScrollOffset.x));
data += nsPrintfCString(", \"y\" : %d", NS_lround(aFrameMetrics.mViewportScrollOffset.y));
// We don't treat the x and y scales any differently for this
// semi-platform-specific code.
data += nsPrintfCString(", \"zoom\" : %f", aFrameMetrics.mResolution.width);
data += nsPrintfCString(", \"displayPort\" : ");
data += nsPrintfCString("{ \"left\" : %d", aFrameMetrics.mDisplayPort.X());
data += nsPrintfCString(", \"top\" : %d", aFrameMetrics.mDisplayPort.Y());
data += nsPrintfCString(", \"width\" : %d", aFrameMetrics.mDisplayPort.Width());
data += nsPrintfCString(", \"height\" : %d", aFrameMetrics.mDisplayPort.Height());
data += nsPrintfCString(", \"resolution\" : %f", aFrameMetrics.mResolution.width);
data += nsPrintfCString(" }");
data += nsPrintfCString(", \"screenSize\" : ");
data += nsPrintfCString("{ \"width\" : %d", aFrameMetrics.mViewport.width);
data += nsPrintfCString(", \"height\" : %d", aFrameMetrics.mViewport.height);
data += nsPrintfCString(" }");
data += nsPrintfCString(", \"cssPageRect\" : ");
data += nsPrintfCString("{ \"x\" : %f", aFrameMetrics.mCSSContentRect.x);
data += nsPrintfCString(", \"y\" : %f", aFrameMetrics.mCSSContentRect.y);
data += nsPrintfCString(", \"width\" : %f", aFrameMetrics.mCSSContentRect.width);
data += nsPrintfCString(", \"height\" : %f", aFrameMetrics.mCSSContentRect.height);
data += nsPrintfCString(" }");
data += nsPrintfCString(" }");
DispatchMessageManagerMessage(NS_LITERAL_STRING("Viewport:Change"), data);
return true;
}
bool
TabChild::RecvHandleDoubleTap(const nsIntPoint& aPoint)
{
if (!mCx || !mTabChildGlobal) {
return true;
}
nsCString data;
data += nsPrintfCString("{ \"x\" : %d", aPoint.x);
data += nsPrintfCString(", \"y\" : %d", aPoint.y);
data += nsPrintfCString(" }");
DispatchMessageManagerMessage(NS_LITERAL_STRING("Gesture:DoubleTap"), data);
return true;
}
bool
TabChild::RecvActivate()
{
nsCOMPtr<nsIWebBrowserFocus> browser = do_QueryInterface(mWebNav);
browser->Activate();
return true;
}
bool TabChild::RecvDeactivate()
{
nsCOMPtr<nsIWebBrowserFocus> browser = do_QueryInterface(mWebNav);
browser->Deactivate();
return true;
}
bool
TabChild::RecvMouseEvent(const nsString& aType,
const float& aX,
const float& aY,
const int32_t& aButton,
const int32_t& aClickCount,
const int32_t& aModifiers,
const bool& aIgnoreRootScrollFrame)
{
nsCOMPtr<nsPIDOMWindow> window = do_GetInterface(mWebNav);
nsCOMPtr<nsIDOMWindowUtils> utils = do_GetInterface(window);
NS_ENSURE_TRUE(utils, true);
utils->SendMouseEvent(aType, aX, aY, aButton, aClickCount, aModifiers,
aIgnoreRootScrollFrame, 0, 0);
return true;
}
bool
TabChild::RecvRealMouseEvent(const nsMouseEvent& event)
{
nsMouseEvent localEvent(event);
DispatchWidgetEvent(localEvent);
return true;
}
bool
TabChild::RecvMouseWheelEvent(const WheelEvent& event)
{
WheelEvent localEvent(event);
DispatchWidgetEvent(localEvent);
return true;
}
bool
TabChild::RecvRealTouchEvent(const nsTouchEvent& aEvent)
{
nsTouchEvent localEvent(aEvent);
nsEventStatus status = DispatchWidgetEvent(localEvent);
nsCOMPtr<nsPIDOMWindow> outerWindow = do_GetInterface(mWebNav);
nsCOMPtr<nsPIDOMWindow> innerWindow = outerWindow->GetCurrentInnerWindow();
if (innerWindow && innerWindow->HasTouchEventListeners()) {
SendContentReceivedTouch(nsIPresShell::gPreventMouseEvents);
}
if (status == nsEventStatus_eConsumeNoDefault) {
return true;
}
// Synthesize a phony mouse event.
uint32_t msg;
switch (aEvent.message) {
case NS_TOUCH_START:
msg = NS_MOUSE_BUTTON_DOWN;
break;
case NS_TOUCH_MOVE:
msg = NS_MOUSE_MOVE;
break;
case NS_TOUCH_END:
case NS_TOUCH_CANCEL:
msg = NS_MOUSE_BUTTON_UP;
break;
default:
MOZ_NOT_REACHED("Unknown touch event message");
}
nsIntPoint refPoint(0, 0);
if (aEvent.touches.Length()) {
refPoint = aEvent.touches[0]->mRefPoint;
}
nsMouseEvent event(true, msg, NULL,
nsMouseEvent::eReal, nsMouseEvent::eNormal);
event.refPoint = refPoint;
event.time = aEvent.time;
event.button = nsMouseEvent::eLeftButton;
if (msg != NS_MOUSE_MOVE) {
event.clickCount = 1;
}
DispatchWidgetEvent(event);
return true;
}
bool
TabChild::RecvRealTouchMoveEvent(const nsTouchEvent& aEvent)
{
return RecvRealTouchEvent(aEvent);
}
bool
TabChild::RecvRealKeyEvent(const nsKeyEvent& event)
{
nsKeyEvent localEvent(event);
DispatchWidgetEvent(localEvent);
return true;
}
bool
TabChild::RecvKeyEvent(const nsString& aType,
const int32_t& aKeyCode,
const int32_t& aCharCode,
const int32_t& aModifiers,
const bool& aPreventDefault)
{
nsCOMPtr<nsPIDOMWindow> window = do_GetInterface(mWebNav);
nsCOMPtr<nsIDOMWindowUtils> utils = do_GetInterface(window);
NS_ENSURE_TRUE(utils, true);
bool ignored = false;
utils->SendKeyEvent(aType, aKeyCode, aCharCode,
aModifiers, aPreventDefault, &ignored);
return true;
}
bool
TabChild::RecvCompositionEvent(const nsCompositionEvent& event)
{
nsCompositionEvent localEvent(event);
DispatchWidgetEvent(localEvent);
return true;
}
bool
TabChild::RecvTextEvent(const nsTextEvent& event)
{
nsTextEvent localEvent(event);
DispatchWidgetEvent(localEvent);
IPC::ParamTraits<nsTextEvent>::Free(event);
return true;
}
bool
TabChild::RecvSelectionEvent(const nsSelectionEvent& event)
{
nsSelectionEvent localEvent(event);
DispatchWidgetEvent(localEvent);
return true;
}
nsEventStatus
TabChild::DispatchWidgetEvent(nsGUIEvent& event)
{
if (!mWidget)
return nsEventStatus_eConsumeNoDefault;
nsEventStatus status;
event.widget = mWidget;
NS_ENSURE_SUCCESS(mWidget->DispatchEvent(&event, status),
nsEventStatus_eConsumeNoDefault);
return status;
}
PDocumentRendererChild*
TabChild::AllocPDocumentRenderer(const nsRect& documentRect,
const gfxMatrix& transform,
const nsString& bgcolor,
const uint32_t& renderFlags,
const bool& flushLayout,
const nsIntSize& renderSize)
{
return new DocumentRendererChild();
}
bool
TabChild::DeallocPDocumentRenderer(PDocumentRendererChild* actor)
{
delete actor;
return true;
}
bool
TabChild::RecvPDocumentRendererConstructor(PDocumentRendererChild* actor,
const nsRect& documentRect,
const gfxMatrix& transform,
const nsString& bgcolor,
const uint32_t& renderFlags,
const bool& flushLayout,
const nsIntSize& renderSize)
{
DocumentRendererChild *render = static_cast<DocumentRendererChild *>(actor);
nsCOMPtr<nsIWebBrowser> browser = do_QueryInterface(mWebNav);
if (!browser)
return true; // silently ignore
nsCOMPtr<nsIDOMWindow> window;
if (NS_FAILED(browser->GetContentDOMWindow(getter_AddRefs(window))) ||
!window)
{
return true; // silently ignore
}
nsCString data;
bool ret = render->RenderDocument(window,
documentRect, transform,
bgcolor,
renderFlags, flushLayout,
renderSize, data);
if (!ret)
return true; // silently ignore
return PDocumentRendererChild::Send__delete__(actor, renderSize, data);
}
PContentDialogChild*
TabChild::AllocPContentDialog(const uint32_t&,
const nsCString&,
const nsCString&,
const InfallibleTArray<int>&,
const InfallibleTArray<nsString>&)
{
return new ContentDialogChild();
}
bool
TabChild::DeallocPContentDialog(PContentDialogChild* aDialog)
{
delete aDialog;
return true;
}
PContentPermissionRequestChild*
TabChild::AllocPContentPermissionRequest(const nsCString& aType, const IPC::Principal&)
{
NS_RUNTIMEABORT("unused");
return nullptr;
}
bool
TabChild::DeallocPContentPermissionRequest(PContentPermissionRequestChild* actor)
{
PCOMContentPermissionRequestChild* child =
static_cast<PCOMContentPermissionRequestChild*>(actor);
#ifdef DEBUG
child->mIPCOpen = false;
#endif /* DEBUG */
child->IPDLRelease();
return true;
}
bool
TabChild::RecvActivateFrameEvent(const nsString& aType, const bool& capture)
{
nsCOMPtr<nsPIDOMWindow> window = do_GetInterface(mWebNav);
NS_ENSURE_TRUE(window, true);
nsCOMPtr<nsIDOMEventTarget> chromeHandler =
do_QueryInterface(window->GetChromeEventHandler());
NS_ENSURE_TRUE(chromeHandler, true);
nsRefPtr<ContentListener> listener = new ContentListener(this);
NS_ENSURE_TRUE(listener, true);
chromeHandler->AddEventListener(aType, listener, capture);
return true;
}
POfflineCacheUpdateChild*
TabChild::AllocPOfflineCacheUpdate(const URIParams& manifestURI,
const URIParams& documentURI,
const nsCString& clientID,
const bool& stickDocument)
{
NS_RUNTIMEABORT("unused");
return nullptr;
}
bool
TabChild::DeallocPOfflineCacheUpdate(POfflineCacheUpdateChild* actor)
{
OfflineCacheUpdateChild* offlineCacheUpdate = static_cast<OfflineCacheUpdateChild*>(actor);
delete offlineCacheUpdate;
return true;
}
bool
TabChild::RecvLoadRemoteScript(const nsString& aURL)
{
if (!mCx && !InitTabChildGlobal())
// This can happen if we're half-destroyed. It's not a fatal
// error.
return true;
LoadFrameScriptInternal(aURL);
return true;
}
bool
TabChild::RecvAsyncMessage(const nsString& aMessage,
const ClonedMessageData& aData)
{
if (mTabChildGlobal) {
nsFrameScriptCx cx(static_cast<nsIWebBrowserChrome*>(this), this);
const SerializedStructuredCloneBuffer& buffer = aData.data();
const InfallibleTArray<PBlobChild*>& blobChildList = aData.blobsChild();
StructuredCloneData cloneData;
cloneData.mData = buffer.data;
cloneData.mDataLength = buffer.dataLength;
if (!blobChildList.IsEmpty()) {
uint32_t length = blobChildList.Length();
cloneData.mClosure.mBlobs.SetCapacity(length);
for (uint32_t i = 0; i < length; ++i) {
BlobChild* blobChild = static_cast<BlobChild*>(blobChildList[i]);
MOZ_ASSERT(blobChild);
nsCOMPtr<nsIDOMBlob> blob = blobChild->GetBlob();
MOZ_ASSERT(blob);
cloneData.mClosure.mBlobs.AppendElement(blob);
}
}
nsRefPtr<nsFrameMessageManager> mm =
static_cast<nsFrameMessageManager*>(mTabChildGlobal->mMessageManager.get());
mm->ReceiveMessage(static_cast<nsIDOMEventTarget*>(mTabChildGlobal),
aMessage, false, &cloneData, nullptr, nullptr);
}
return true;
}
class UnloadScriptEvent : public nsRunnable
{
public:
UnloadScriptEvent(TabChild* aTabChild, TabChildGlobal* aTabChildGlobal)
: mTabChild(aTabChild), mTabChildGlobal(aTabChildGlobal)
{ }
NS_IMETHOD Run()
{
nsCOMPtr<nsIDOMEvent> event;
NS_NewDOMEvent(getter_AddRefs(event), nullptr, nullptr);
if (event) {
event->InitEvent(NS_LITERAL_STRING("unload"), false, false);
event->SetTrusted(true);
bool dummy;
mTabChildGlobal->DispatchEvent(event, &dummy);
}
return NS_OK;
}
nsRefPtr<TabChild> mTabChild;
TabChildGlobal* mTabChildGlobal;
};
bool
TabChild::RecvDestroy()
{
if (mTabChildGlobal) {
// Let the frame scripts know the child is being closed
nsContentUtils::AddScriptRunner(
new UnloadScriptEvent(this, mTabChildGlobal)
);
}
// XXX what other code in ~TabChild() should we be running here?
DestroyWindow();
return Send__delete__(this);
}
PRenderFrameChild*
TabChild::AllocPRenderFrame(ScrollingBehavior* aScrolling,
LayersBackend* aBackend,
int32_t* aMaxTextureSize,
uint64_t* aLayersId)
{
return new RenderFrameChild();
}
bool
TabChild::DeallocPRenderFrame(PRenderFrameChild* aFrame)
{
delete aFrame;
return true;
}
bool
TabChild::InitTabChildGlobal(FrameScriptLoading aScriptLoading)
{
if (!mCx && !mTabChildGlobal) {
nsCOMPtr<nsPIDOMWindow> window = do_GetInterface(mWebNav);
NS_ENSURE_TRUE(window, false);
nsCOMPtr<nsIDOMEventTarget> chromeHandler =
do_QueryInterface(window->GetChromeEventHandler());
NS_ENSURE_TRUE(chromeHandler, false);
nsRefPtr<TabChildGlobal> scope = new TabChildGlobal(this);
NS_ENSURE_TRUE(scope, false);
mTabChildGlobal = scope;
nsISupports* scopeSupports = NS_ISUPPORTS_CAST(nsIDOMEventTarget*, scope);
NS_ENSURE_TRUE(InitTabChildGlobalInternal(scopeSupports), false);
scope->Init();
nsCOMPtr<nsPIWindowRoot> root = do_QueryInterface(chromeHandler);
NS_ENSURE_TRUE(root, false);
root->SetParentTarget(scope);
}
if (aScriptLoading != DONT_LOAD_SCRIPTS && !mTriedBrowserInit) {
mTriedBrowserInit = true;
// Initialize the child side of the browser element machinery,
// if appropriate.
if (mIsBrowserElement || mAppId != nsIScriptSecurityManager::NO_APP_ID) {
RecvLoadRemoteScript(BROWSER_ELEMENT_CHILD_SCRIPT);
}
}
return true;
}
bool
TabChild::InitRenderingState()
{
static_cast<PuppetWidget*>(mWidget.get())->InitIMEState();
LayersBackend be;
uint64_t id;
int32_t maxTextureSize;
RenderFrameChild* remoteFrame =
static_cast<RenderFrameChild*>(SendPRenderFrameConstructor(
&mScrolling, &be, &maxTextureSize, &id));
if (!remoteFrame) {
NS_WARNING("failed to construct RenderFrame");
return false;
}
PLayersChild* shadowManager = nullptr;
if (id != 0) {
// Pushing layers transactions directly to a separate
// compositor context.
shadowManager =
CompositorChild::Get()->SendPLayersConstructor(be, id,
&be,
&maxTextureSize);
} else {
// Pushing transactions to the parent content.
shadowManager = remoteFrame->SendPLayersConstructor();
}
if (!shadowManager) {
NS_WARNING("failed to construct LayersChild");
// This results in |remoteFrame| being deleted.
PRenderFrameChild::Send__delete__(remoteFrame);
return false;
}
ShadowLayerForwarder* lf =
mWidget->GetLayerManager(shadowManager, be)->AsShadowForwarder();
NS_ABORT_IF_FALSE(lf && lf->HasShadowManager(),
"PuppetWidget should have shadow manager");
lf->SetParentBackendType(be);
lf->SetMaxTextureSize(maxTextureSize);
mRemoteFrame = remoteFrame;
nsCOMPtr<nsIObserverService> observerService =
do_GetService(NS_OBSERVERSERVICE_CONTRACTID);
if (observerService) {
observerService->AddObserver(this,
"cancel-default-pan-zoom",
false);
observerService->AddObserver(this,
"browser-zoom-to-rect",
false);
}
return true;
}
void
TabChild::SetBackgroundColor(const nscolor& aColor)
{
if (mLastBackgroundColor != aColor) {
mLastBackgroundColor = aColor;
SendSetBackgroundColor(mLastBackgroundColor);
}
}
void
TabChild::GetDPI(float* aDPI)
{
*aDPI = -1.0;
if (!mRemoteFrame) {
return;
}
SendGetDPI(aDPI);
}
void
TabChild::NotifyPainted()
{
if (UseDirectCompositor() && !mNotified) {
mRemoteFrame->SendNotifyCompositorTransaction();
mNotified = true;
}
}
bool
TabChild::IsAsyncPanZoomEnabled()
{
return mScrolling == ASYNC_PAN_ZOOM;
}
NS_IMETHODIMP
TabChild::GetMessageManager(nsIContentFrameMessageManager** aResult)
{
if (mTabChildGlobal) {
NS_ADDREF(*aResult = mTabChildGlobal);
return NS_OK;
}
*aResult = nullptr;
return NS_ERROR_FAILURE;
}
PIndexedDBChild*
TabChild::AllocPIndexedDB(const nsCString& aASCIIOrigin, bool* /* aAllowed */)
{
NS_NOTREACHED("Should never get here!");
return NULL;
}
bool
TabChild::DeallocPIndexedDB(PIndexedDBChild* aActor)
{
delete aActor;
return true;
}
static bool
SendSyncMessageToParent(void* aCallbackData,
const nsAString& aMessage,
const StructuredCloneData& aData,
InfallibleTArray<nsString>* aJSONRetVal)
{
TabChild* tabChild = static_cast<TabChild*>(aCallbackData);
ContentChild* cc = static_cast<ContentChild*>(tabChild->Manager());
ClonedMessageData data;
SerializedStructuredCloneBuffer& buffer = data.data();
buffer.data = aData.mData;
buffer.dataLength = aData.mDataLength;
const nsTArray<nsCOMPtr<nsIDOMBlob> >& blobs = aData.mClosure.mBlobs;
if (!blobs.IsEmpty()) {
InfallibleTArray<PBlobChild*>& blobChildList = data.blobsChild();
uint32_t length = blobs.Length();
blobChildList.SetCapacity(length);
for (uint32_t i = 0; i < length; ++i) {
BlobChild* blobChild = cc->GetOrCreateActorForBlob(blobs[i]);
if (!blobChild) {
return false;
}
blobChildList.AppendElement(blobChild);
}
}
return tabChild->SendSyncMessage(nsString(aMessage), data, aJSONRetVal);
}
static bool
SendAsyncMessageToParent(void* aCallbackData,
const nsAString& aMessage,
const StructuredCloneData& aData)
{
TabChild* tabChild = static_cast<TabChild*>(aCallbackData);
ContentChild* cc = static_cast<ContentChild*>(tabChild->Manager());
ClonedMessageData data;
SerializedStructuredCloneBuffer& buffer = data.data();
buffer.data = aData.mData;
buffer.dataLength = aData.mDataLength;
const nsTArray<nsCOMPtr<nsIDOMBlob> >& blobs = aData.mClosure.mBlobs;
if (!blobs.IsEmpty()) {
InfallibleTArray<PBlobChild*>& blobChildList = data.blobsChild();
uint32_t length = blobs.Length();
blobChildList.SetCapacity(length);
for (uint32_t i = 0; i < length; ++i) {
BlobChild* blobChild = cc->GetOrCreateActorForBlob(blobs[i]);
if (!blobChild) {
return false;
}
blobChildList.AppendElement(blobChild);
}
}
return tabChild->SendAsyncMessage(nsString(aMessage), data);
}
TabChildGlobal::TabChildGlobal(TabChild* aTabChild)
: mTabChild(aTabChild)
{
}
void
TabChildGlobal::Init()
{
NS_ASSERTION(!mMessageManager, "Re-initializing?!?");
mMessageManager = new nsFrameMessageManager(false, /* aChrome */
SendSyncMessageToParent,
SendAsyncMessageToParent,
nullptr,
mTabChild,
nullptr,
mTabChild->GetJSContext());
}
NS_IMPL_CYCLE_COLLECTION_CLASS(TabChildGlobal)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(TabChildGlobal,
nsDOMEventTargetHelper)
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mMessageManager)
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(TabChildGlobal,
nsDOMEventTargetHelper)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mMessageManager)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(TabChildGlobal)
NS_INTERFACE_MAP_ENTRY(nsIMessageListenerManager)
NS_INTERFACE_MAP_ENTRY(nsIMessageSender)
NS_INTERFACE_MAP_ENTRY(nsISyncMessageSender)
NS_INTERFACE_MAP_ENTRY(nsIContentFrameMessageManager)
NS_INTERFACE_MAP_ENTRY(nsIScriptContextPrincipal)
NS_INTERFACE_MAP_ENTRY(nsIScriptObjectPrincipal)
NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(ContentFrameMessageManager)
NS_INTERFACE_MAP_END_INHERITING(nsDOMEventTargetHelper)
NS_IMPL_ADDREF_INHERITED(TabChildGlobal, nsDOMEventTargetHelper)
NS_IMPL_RELEASE_INHERITED(TabChildGlobal, nsDOMEventTargetHelper)
NS_IMETHODIMP
TabChildGlobal::GetContent(nsIDOMWindow** aContent)
{
*aContent = nullptr;
if (!mTabChild)
return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIDOMWindow> window = do_GetInterface(mTabChild->WebNavigation());
window.swap(*aContent);
return NS_OK;
}
NS_IMETHODIMP
TabChildGlobal::PrivateNoteIntentionalCrash()
{
mozilla::NoteIntentionalCrash("tab");
return NS_OK;
}
NS_IMETHODIMP
TabChildGlobal::GetDocShell(nsIDocShell** aDocShell)
{
*aDocShell = nullptr;
if (!mTabChild)
return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIDocShell> docShell = do_GetInterface(mTabChild->WebNavigation());
docShell.swap(*aDocShell);
return NS_OK;
}
NS_IMETHODIMP
TabChildGlobal::Btoa(const nsAString& aBinaryData,
nsAString& aAsciiBase64String)
{
return nsContentUtils::Btoa(aBinaryData, aAsciiBase64String);
}
NS_IMETHODIMP
TabChildGlobal::Atob(const nsAString& aAsciiString,
nsAString& aBinaryData)
{
return nsContentUtils::Atob(aAsciiString, aBinaryData);
}
JSContext*
TabChildGlobal::GetJSContextForEventHandlers()
{
if (!mTabChild)
return nullptr;
return mTabChild->GetJSContext();
}
nsIPrincipal*
TabChildGlobal::GetPrincipal()
{
if (!mTabChild)
return nullptr;
return mTabChild->GetPrincipal();
}
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