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gecko/dom/ipc/TabChild.cpp

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/* -*- Mode: C++; c-basic-offset: 2; 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 "Layers.h"
#include "ContentChild.h"
#include "IndexedDBChild.h"
#include "mozilla/Preferences.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/EventListenerManager.h"
#include "mozilla/IntentionalCrash.h"
#include "mozilla/docshell/OfflineCacheUpdateChild.h"
#include "mozilla/ipc/DocumentRendererChild.h"
#include "mozilla/ipc/FileDescriptorUtils.h"
#include "mozilla/layers/ActiveElementManager.h"
#include "mozilla/layers/APZCCallbackHelper.h"
#include "mozilla/layers/AsyncPanZoomController.h"
#include "mozilla/layers/CompositorChild.h"
#include "mozilla/layers/ImageBridgeChild.h"
#include "mozilla/layers/ShadowLayers.h"
#include "mozilla/layout/RenderFrameChild.h"
#include "mozilla/MouseEvents.h"
#include "mozilla/Services.h"
#include "mozilla/StaticPtr.h"
#include "mozilla/TextEvents.h"
#include "mozilla/TouchEvents.h"
#include "mozilla/unused.h"
#include "mozIApplication.h"
#include "nsContentUtils.h"
#include "nsCxPusher.h"
#include "nsEmbedCID.h"
#include <algorithm>
#ifdef MOZ_CRASHREPORTER
#include "nsExceptionHandler.h"
#endif
#include "nsFilePickerProxy.h"
#include "mozilla/dom/Element.h"
#include "nsIBaseWindow.h"
#include "nsIBrowserDOMWindow.h"
#include "nsICachedFileDescriptorListener.h"
#include "nsIDocumentInlines.h"
#include "nsIDocShellTreeOwner.h"
#include "nsIDOMChromeWindow.h"
#include "nsIDOMEvent.h"
#include "nsIDOMWindow.h"
#include "nsIDOMWindowUtils.h"
#include "nsIDocShell.h"
#include "nsIURI.h"
#include "nsIURIFixup.h"
#include "nsCDefaultURIFixup.h"
#include "nsIWebBrowser.h"
#include "nsIWebBrowserFocus.h"
#include "nsIWebBrowserSetup.h"
#include "nsIWebProgress.h"
#include "nsIXULRuntime.h"
#include "nsInterfaceHashtable.h"
#include "nsPIDOMWindow.h"
#include "nsPIWindowRoot.h"
#include "nsLayoutUtils.h"
#include "nsPrintfCString.h"
#include "nsThreadUtils.h"
#include "nsWeakReference.h"
#include "nsWindowWatcher.h"
#include "PermissionMessageUtils.h"
#include "PCOMContentPermissionRequestChild.h"
#include "PuppetWidget.h"
#include "StructuredCloneUtils.h"
#include "nsViewportInfo.h"
#include "JavaScriptChild.h"
#include "nsILoadContext.h"
#include "ipc/nsGUIEventIPC.h"
#include "mozilla/gfx/Matrix.h"
#include "UnitTransforms.h"
#include "ClientLayerManager.h"
#include "nsColorPickerProxy.h"
#ifdef DEBUG
#include "PCOMContentPermissionRequestChild.h"
#endif /* DEBUG */
#define BROWSER_ELEMENT_CHILD_SCRIPT \
NS_LITERAL_STRING("chrome://global/content/BrowserElementChild.js")
using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::dom::ipc;
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;
using namespace mozilla::jsipc;
NS_IMPL_ISUPPORTS(ContentListener, nsIDOMEventListener)
static const CSSSize kDefaultViewportSize(980, 480);
static const char BROWSER_ZOOM_TO_RECT[] = "browser-zoom-to-rect";
static const char BEFORE_FIRST_PAINT[] = "before-first-paint";
static bool sCpowsEnabled = false;
static int32_t sActiveDurationMs = 10;
static bool sActiveDurationMsSet = false;
typedef nsDataHashtable<nsUint64HashKey, TabChild*> TabChildMap;
static TabChildMap* sTabChildren;
TabChildBase::TabChildBase()
: mContentDocumentIsDisplayed(false)
, mTabChildGlobal(nullptr)
, mInnerSize(0, 0)
{
mozilla::HoldJSObjects(this);
}
TabChildBase::~TabChildBase()
{
mAnonymousGlobalScopes.Clear();
mozilla::DropJSObjects(this);
}
NS_IMPL_CYCLE_COLLECTION_CLASS(TabChildBase)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(TabChildBase)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mTabChildGlobal)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mGlobal)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mAnonymousGlobalScopes)
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(TabChildBase)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTabChildGlobal)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGlobal)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(TabChildBase)
for (uint32_t i = 0; i < tmp->mAnonymousGlobalScopes.Length(); ++i) {
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mAnonymousGlobalScopes[i])
}
NS_IMPL_CYCLE_COLLECTION_TRACE_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(TabChildBase)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(TabChildBase)
NS_IMPL_CYCLE_COLLECTING_RELEASE(TabChildBase)
void
TabChildBase::InitializeRootMetrics()
{
// Calculate a really simple resolution that we probably won't
// be keeping, as well as putting the scroll offset back to
// the top-left of the page.
mLastRootMetrics.mViewport = CSSRect(CSSPoint(), kDefaultViewportSize);
mLastRootMetrics.mCompositionBounds = ParentLayerRect(
ParentLayerPoint(),
ParentLayerSize(ViewAs<ParentLayerPixel>(mInnerSize, PixelCastJustification::ScreenToParentLayerForRoot)));
mLastRootMetrics.SetZoom(mLastRootMetrics.CalculateIntrinsicScale());
mLastRootMetrics.mDevPixelsPerCSSPixel = WebWidget()->GetDefaultScale();
// We use ScreenToLayerScale(1) below in order to turn the
// async zoom amount into the gecko zoom amount.
mLastRootMetrics.mCumulativeResolution =
mLastRootMetrics.GetZoom() / mLastRootMetrics.mDevPixelsPerCSSPixel * ScreenToLayerScale(1);
// This is the root layer, so the cumulative resolution is the same
// as the resolution.
mLastRootMetrics.mResolution = mLastRootMetrics.mCumulativeResolution / LayoutDeviceToParentLayerScale(1);
mLastRootMetrics.SetScrollOffset(CSSPoint(0, 0));
}
void
TabChildBase::SetCSSViewport(const CSSSize& aSize)
{
mOldViewportSize = aSize;
if (mContentDocumentIsDisplayed) {
nsCOMPtr<nsIDOMWindowUtils> utils(GetDOMWindowUtils());
utils->SetCSSViewport(aSize.width, aSize.height);
}
}
CSSSize
TabChildBase::GetPageSize(nsCOMPtr<nsIDocument> aDocument, const CSSSize& aViewport)
{
nsCOMPtr<Element> htmlDOMElement = aDocument->GetHtmlElement();
HTMLBodyElement* bodyDOMElement = aDocument->GetBodyElement();
if (!htmlDOMElement && !bodyDOMElement) {
// For non-HTML content (e.g. SVG), just assume page size == viewport size.
return aViewport;
}
int32_t htmlWidth = 0, htmlHeight = 0;
if (htmlDOMElement) {
htmlWidth = htmlDOMElement->ScrollWidth();
htmlHeight = htmlDOMElement->ScrollHeight();
}
int32_t bodyWidth = 0, bodyHeight = 0;
if (bodyDOMElement) {
bodyWidth = bodyDOMElement->ScrollWidth();
bodyHeight = bodyDOMElement->ScrollHeight();
}
return CSSSize(std::max(htmlWidth, bodyWidth),
std::max(htmlHeight, bodyHeight));
}
bool
TabChildBase::HandlePossibleViewportChange()
{
if (!IsAsyncPanZoomEnabled()) {
return false;
}
nsCOMPtr<nsIDocument> document(GetDocument());
nsCOMPtr<nsIDOMWindowUtils> utils(GetDOMWindowUtils());
nsViewportInfo viewportInfo = nsContentUtils::GetViewportInfo(document, mInnerSize);
uint32_t presShellId;
mozilla::layers::FrameMetrics::ViewID viewId;
bool scrollIdentifiersValid = APZCCallbackHelper::GetOrCreateScrollIdentifiers(
document->GetDocumentElement(), &presShellId, &viewId);
if (scrollIdentifiersValid) {
ZoomConstraints constraints(
viewportInfo.IsZoomAllowed(),
viewportInfo.IsDoubleTapZoomAllowed(),
viewportInfo.GetMinZoom(),
viewportInfo.GetMaxZoom());
DoUpdateZoomConstraints(presShellId,
viewId,
/* isRoot = */ true,
constraints);
}
float screenW = mInnerSize.width;
float screenH = mInnerSize.height;
CSSSize viewport(viewportInfo.GetSize());
// We're not being displayed in any way; don't bother doing anything because
// that will just confuse future adjustments.
if (!screenW || !screenH) {
return false;
}
CSSSize oldBrowserSize = mOldViewportSize;
mLastRootMetrics.mViewport.SizeTo(viewport);
if (oldBrowserSize == CSSSize()) {
oldBrowserSize = kDefaultViewportSize;
}
SetCSSViewport(viewport);
// If this page has not been painted yet, then this must be getting run
// because a meta-viewport element was added (via the DOMMetaAdded handler).
// in this case, we should not do anything that forces a reflow (see bug
// 759678) such as requesting the page size or sending a viewport update. this
// code will get run again in the before-first-paint handler and that point we
// will run though all of it. the reason we even bother executing up to this
// point on the DOMMetaAdded handler is so that scripts that use
// window.innerWidth before they are painted have a correct value (bug
// 771575).
if (!mContentDocumentIsDisplayed) {
return false;
}
ScreenIntSize oldScreenSize = ViewAs<ScreenPixel>(
RoundedToInt(mLastRootMetrics.mCompositionBounds).Size(),
PixelCastJustification::ScreenToParentLayerForRoot);
if (oldScreenSize == ScreenIntSize()) {
oldScreenSize = mInnerSize;
}
FrameMetrics metrics(mLastRootMetrics);
metrics.mViewport = CSSRect(CSSPoint(), viewport);
metrics.mCompositionBounds = ParentLayerRect(
ParentLayerPoint(),
ParentLayerSize(ViewAs<ParentLayerPixel>(mInnerSize, PixelCastJustification::ScreenToParentLayerForRoot)));
metrics.SetRootCompositionSize(
ScreenSize(mInnerSize) * ScreenToLayoutDeviceScale(1.0f) / metrics.mDevPixelsPerCSSPixel);
// This change to the zoom accounts for all types of changes I can conceive:
// 1. screen size changes, CSS viewport does not (pages with no meta viewport
// or a fixed size viewport)
// 2. screen size changes, CSS viewport also does (pages with a device-width
// viewport)
// 3. screen size remains constant, but CSS viewport changes (meta viewport
// tag is added or removed)
// 4. neither screen size nor CSS viewport changes
//
// In all of these cases, we maintain how much actual content is visible
// within the screen width. Note that "actual content" may be different with
// respect to CSS pixels because of the CSS viewport size changing.
float oldIntrinsicScale =
std::max(oldScreenSize.width / oldBrowserSize.width,
oldScreenSize.height / oldBrowserSize.height);
metrics.ZoomBy(metrics.CalculateIntrinsicScale().scale / oldIntrinsicScale);
// Changing the zoom when we're not doing a first paint will get ignored
// by AsyncPanZoomController and causes a blurry flash.
bool isFirstPaint;
nsresult rv = utils->GetIsFirstPaint(&isFirstPaint);
if (NS_FAILED(rv) || isFirstPaint) {
// FIXME/bug 799585(?): GetViewportInfo() returns a defaultZoom of
// 0.0 to mean "did not calculate a zoom". In that case, we default
// it to the intrinsic scale.
if (viewportInfo.GetDefaultZoom().scale < 0.01f) {
viewportInfo.SetDefaultZoom(metrics.CalculateIntrinsicScale());
}
CSSToScreenScale defaultZoom = viewportInfo.GetDefaultZoom();
MOZ_ASSERT(viewportInfo.GetMinZoom() <= defaultZoom &&
defaultZoom <= viewportInfo.GetMaxZoom());
metrics.SetZoom(defaultZoom);
metrics.SetScrollId(viewId);
}
metrics.mCumulativeResolution = metrics.GetZoom() / metrics.mDevPixelsPerCSSPixel * ScreenToLayerScale(1);
// This is the root layer, so the cumulative resolution is the same
// as the resolution.
metrics.mResolution = metrics.mCumulativeResolution / LayoutDeviceToParentLayerScale(1);
utils->SetResolution(metrics.mResolution.scale, metrics.mResolution.scale);
CSSSize scrollPort = metrics.CalculateCompositedSizeInCssPixels();
utils->SetScrollPositionClampingScrollPortSize(scrollPort.width, scrollPort.height);
// The call to GetPageSize forces a resize event to content, so we need to
// make sure that we have the right CSS viewport and
// scrollPositionClampingScrollPortSize set up before that happens.
CSSSize pageSize = GetPageSize(document, viewport);
if (!pageSize.width) {
// Return early rather than divide by 0.
return false;
}
metrics.mScrollableRect = CSSRect(CSSPoint(), pageSize);
// Calculate a display port _after_ having a scrollable rect because the
// display port is clamped to the scrollable rect.
metrics.SetDisplayPortMargins(AsyncPanZoomController::CalculatePendingDisplayPort(
// The page must have been refreshed in some way such as a new document or
// new CSS viewport, so we know that there's no velocity, acceleration, and
// we have no idea how long painting will take.
metrics, ScreenPoint(0.0f, 0.0f), 0.0));
metrics.SetUseDisplayPortMargins();
// Force a repaint with these metrics. This, among other things, sets the
// displayport, so we start with async painting.
mLastRootMetrics = ProcessUpdateFrame(metrics);
if (viewportInfo.IsZoomAllowed() && scrollIdentifiersValid) {
// If the CSS viewport is narrower than the screen (i.e. width <= device-width)
// then we disable double-tap-to-zoom behaviour.
bool allowDoubleTapZoom = (viewport.width > screenW / metrics.mDevPixelsPerCSSPixel.scale);
if (allowDoubleTapZoom != viewportInfo.IsDoubleTapZoomAllowed()) {
viewportInfo.SetAllowDoubleTapZoom(allowDoubleTapZoom);
ZoomConstraints constraints(
viewportInfo.IsZoomAllowed(),
viewportInfo.IsDoubleTapZoomAllowed(),
viewportInfo.GetMinZoom(),
viewportInfo.GetMaxZoom());
DoUpdateZoomConstraints(presShellId,
viewId,
/* isRoot = */ true,
constraints);
}
}
return true;
}
already_AddRefed<nsIDOMWindowUtils>
TabChildBase::GetDOMWindowUtils()
{
nsCOMPtr<nsPIDOMWindow> window = do_GetInterface(WebNavigation());
nsCOMPtr<nsIDOMWindowUtils> utils = do_GetInterface(window);
return utils.forget();
}
already_AddRefed<nsIDocument>
TabChildBase::GetDocument()
{
nsCOMPtr<nsIDOMDocument> domDoc;
WebNavigation()->GetDocument(getter_AddRefs(domDoc));
nsCOMPtr<nsIDocument> doc(do_QueryInterface(domDoc));
return doc.forget();
}
void
TabChildBase::DispatchMessageManagerMessage(const nsAString& aMessageName,
const nsAString& aJSONData)
{
AutoSafeJSContext cx;
JS::Rooted<JS::Value> json(cx, JSVAL_NULL);
StructuredCloneData cloneData;
JSAutoStructuredCloneBuffer buffer;
if (JS_ParseJSON(cx,
static_cast<const jschar*>(aJSONData.BeginReading()),
aJSONData.Length(),
&json)) {
WriteStructuredClone(cx, json, buffer, cloneData.mClosure);
cloneData.mData = buffer.data();
cloneData.mDataLength = buffer.nbytes();
}
nsCOMPtr<nsIXPConnectJSObjectHolder> kungFuDeathGrip(GetGlobal());
// 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<EventTarget*>(mTabChildGlobal),
aMessageName, false, &cloneData, nullptr, nullptr, nullptr);
}
bool
TabChildBase::UpdateFrameHandler(const FrameMetrics& aFrameMetrics)
{
MOZ_ASSERT(aFrameMetrics.GetScrollId() != FrameMetrics::NULL_SCROLL_ID);
if (aFrameMetrics.mIsRoot) {
nsCOMPtr<nsIDOMWindowUtils> utils(GetDOMWindowUtils());
if (APZCCallbackHelper::HasValidPresShellId(utils, aFrameMetrics)) {
mLastRootMetrics = ProcessUpdateFrame(aFrameMetrics);
APZCCallbackHelper::UpdateCallbackTransform(aFrameMetrics, mLastRootMetrics);
return true;
}
} else {
// aFrameMetrics.mIsRoot is false, so we are trying to update a subframe.
// This requires special handling.
nsCOMPtr<nsIContent> content = nsLayoutUtils::FindContentFor(
aFrameMetrics.GetScrollId());
if (content) {
FrameMetrics newSubFrameMetrics(aFrameMetrics);
APZCCallbackHelper::UpdateSubFrame(content, newSubFrameMetrics);
APZCCallbackHelper::UpdateCallbackTransform(aFrameMetrics, newSubFrameMetrics);
return true;
}
}
// We've recieved a message that is out of date and we want to ignore.
// However we can't reply without painting so we reply by painting the
// exact same thing as we did before.
mLastRootMetrics = ProcessUpdateFrame(mLastRootMetrics);
return true;
}
FrameMetrics
TabChildBase::ProcessUpdateFrame(const FrameMetrics& aFrameMetrics)
{
if (!mGlobal || !mTabChildGlobal) {
return aFrameMetrics;
}
nsCOMPtr<nsIDOMWindowUtils> utils(GetDOMWindowUtils());
FrameMetrics newMetrics = aFrameMetrics;
APZCCallbackHelper::UpdateRootFrame(utils, newMetrics);
CSSSize cssCompositedSize = newMetrics.CalculateCompositedSizeInCssPixels();
// The BrowserElementScrolling helper must know about these updated metrics
// for other functions it performs, such as double tap handling.
// Note, %f must not be used because it is locale specific!
nsString data;
data.AppendPrintf("{ \"x\" : %d", NS_lround(newMetrics.GetScrollOffset().x));
data.AppendPrintf(", \"y\" : %d", NS_lround(newMetrics.GetScrollOffset().y));
data.AppendLiteral(", \"viewport\" : ");
data.AppendLiteral("{ \"width\" : ");
data.AppendFloat(newMetrics.mViewport.width);
data.AppendLiteral(", \"height\" : ");
data.AppendFloat(newMetrics.mViewport.height);
data.AppendLiteral(" }");
data.AppendLiteral(", \"cssPageRect\" : ");
data.AppendLiteral("{ \"x\" : ");
data.AppendFloat(newMetrics.mScrollableRect.x);
data.AppendLiteral(", \"y\" : ");
data.AppendFloat(newMetrics.mScrollableRect.y);
data.AppendLiteral(", \"width\" : ");
data.AppendFloat(newMetrics.mScrollableRect.width);
data.AppendLiteral(", \"height\" : ");
data.AppendFloat(newMetrics.mScrollableRect.height);
data.AppendLiteral(" }");
data.AppendPrintf(", \"resolution\" : "); // TODO: check if it's actually used?
data.AppendPrintf("{ \"width\" : ");
data.AppendFloat(newMetrics.CalculateIntrinsicScale().scale);
data.AppendPrintf(" }");
data.AppendLiteral(", \"cssCompositedRect\" : ");
data.AppendLiteral("{ \"width\" : ");
data.AppendFloat(cssCompositedSize.width);
data.AppendLiteral(", \"height\" : ");
data.AppendFloat(cssCompositedSize.height);
data.AppendLiteral(" }");
data.AppendLiteral(" }");
DispatchMessageManagerMessage(NS_LITERAL_STRING("Viewport:Change"), data);
return newMetrics;
}
nsEventStatus
TabChildBase::DispatchSynthesizedMouseEvent(uint32_t aMsg, uint64_t aTime,
const LayoutDevicePoint& aRefPoint,
nsIWidget* aWidget)
{
MOZ_ASSERT(aMsg == NS_MOUSE_MOVE || aMsg == NS_MOUSE_BUTTON_DOWN ||
aMsg == NS_MOUSE_BUTTON_UP || aMsg == NS_MOUSE_MOZLONGTAP);
WidgetMouseEvent event(true, aMsg, nullptr,
WidgetMouseEvent::eReal, WidgetMouseEvent::eNormal);
event.refPoint = LayoutDeviceIntPoint(aRefPoint.x, aRefPoint.y);
event.time = aTime;
event.button = WidgetMouseEvent::eLeftButton;
event.inputSource = nsIDOMMouseEvent::MOZ_SOURCE_TOUCH;
if (aMsg != NS_MOUSE_MOVE) {
event.clickCount = 1;
}
event.widget = aWidget;
return DispatchWidgetEvent(event);
}
nsEventStatus
TabChildBase::DispatchWidgetEvent(WidgetGUIEvent& event)
{
if (!event.widget)
return nsEventStatus_eConsumeNoDefault;
nsEventStatus status;
NS_ENSURE_SUCCESS(event.widget->DispatchEvent(&event, status),
nsEventStatus_eConsumeNoDefault);
return status;
}
bool
TabChildBase::IsAsyncPanZoomEnabled()
{
return mScrolling == ASYNC_PAN_ZOOM;
}
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 TabChild::CachedFileDescriptorInfo
{
struct PathOnlyComparatorHelper
{
bool Equals(const nsAutoPtr<CachedFileDescriptorInfo>& a,
const CachedFileDescriptorInfo& b) const
{
return a->mPath == b.mPath;
}
};
struct PathAndCallbackComparatorHelper
{
bool Equals(const nsAutoPtr<CachedFileDescriptorInfo>& a,
const CachedFileDescriptorInfo& b) const
{
return a->mPath == b.mPath &&
a->mCallback == b.mCallback;
}
};
public:
nsString mPath;
FileDescriptor mFileDescriptor;
nsCOMPtr<nsICachedFileDescriptorListener> mCallback;
bool mCanceled;
CachedFileDescriptorInfo(const nsAString& aPath)
: mPath(aPath), mCanceled(false)
{ }
CachedFileDescriptorInfo(const nsAString& aPath,
const FileDescriptor& aFileDescriptor)
: mPath(aPath), mFileDescriptor(aFileDescriptor), mCanceled(false)
{ }
CachedFileDescriptorInfo(const nsAString& aPath,
nsICachedFileDescriptorListener* aCallback)
: mPath(aPath), mCallback(aCallback), mCanceled(false)
{ }
PathOnlyComparatorHelper PathOnlyComparator() const
{
return PathOnlyComparatorHelper();
}
PathAndCallbackComparatorHelper PathAndCallbackComparator() const
{
return PathAndCallbackComparatorHelper();
}
void FireCallback() const
{
mCallback->OnCachedFileDescriptor(mPath, mFileDescriptor);
}
};
class TabChild::CachedFileDescriptorCallbackRunnable : public nsRunnable
{
typedef TabChild::CachedFileDescriptorInfo CachedFileDescriptorInfo;
nsAutoPtr<CachedFileDescriptorInfo> mInfo;
public:
CachedFileDescriptorCallbackRunnable(CachedFileDescriptorInfo* aInfo)
: mInfo(aInfo)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aInfo);
MOZ_ASSERT(!aInfo->mPath.IsEmpty());
MOZ_ASSERT(aInfo->mCallback);
}
void Dispatch()
{
MOZ_ASSERT(NS_IsMainThread());
nsresult rv = NS_DispatchToCurrentThread(this);
NS_ENSURE_SUCCESS_VOID(rv);
}
private:
NS_IMETHOD Run()
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mInfo);
mInfo->FireCallback();
return NS_OK;
}
};
StaticRefPtr<TabChild> sPreallocatedTab;
/*static*/
std::map<uint64_t, nsRefPtr<TabChild> >&
TabChild::NestedTabChildMap()
{
MOZ_ASSERT(NS_IsMainThread());
static std::map<uint64_t, nsRefPtr<TabChild> > sNestedTabChildMap;
return sNestedTabChildMap;
}
/*static*/ void
TabChild::PreloadSlowThings()
{
MOZ_ASSERT(!sPreallocatedTab);
nsRefPtr<TabChild> tab(new TabChild(ContentChild::GetSingleton(),
TabContext(), /* chromeFlags */ 0));
if (!NS_SUCCEEDED(tab->Init()) ||
!tab->InitTabChildGlobal(DONT_LOAD_SCRIPTS)) {
return;
}
// Just load and compile these scripts, but don't run them.
tab->TryCacheLoadAndCompileScript(BROWSER_ELEMENT_CHILD_SCRIPT, true);
// Load, compile, and run these scripts.
tab->RecvLoadRemoteScript(
NS_LITERAL_STRING("chrome://global/content/preload.js"),
true);
nsCOMPtr<nsIDocShell> docShell = do_GetInterface(tab->WebNavigation());
if (nsIPresShell* presShell = docShell->GetPresShell()) {
// Initialize and do an initial reflow of the about:blank
// PresShell to let it preload some things for us.
presShell->Initialize(0, 0);
nsIDocument* doc = presShell->GetDocument();
doc->FlushPendingNotifications(Flush_Layout);
// ... but after it's done, make sure it doesn't do any more
// work.
presShell->MakeZombie();
}
sPreallocatedTab = tab;
ClearOnShutdown(&sPreallocatedTab);
}
/*static*/ already_AddRefed<TabChild>
TabChild::Create(nsIContentChild* aManager, const TabContext &aContext, uint32_t aChromeFlags)
{
if (sPreallocatedTab &&
sPreallocatedTab->mChromeFlags == aChromeFlags &&
aContext.IsBrowserOrApp()) {
nsRefPtr<TabChild> child = sPreallocatedTab.get();
sPreallocatedTab = nullptr;
MOZ_ASSERT(!child->mTriedBrowserInit);
child->SetTabContext(aContext);
child->NotifyTabContextUpdated();
return child.forget();
}
nsRefPtr<TabChild> iframe = new TabChild(aManager,
aContext, aChromeFlags);
return NS_SUCCEEDED(iframe->Init()) ? iframe.forget() : nullptr;
}
TabChild::TabChild(nsIContentChild* aManager, const TabContext& aContext, uint32_t aChromeFlags)
: TabContext(aContext)
, mRemoteFrame(nullptr)
, mManager(aManager)
, mChromeFlags(aChromeFlags)
, mLayersId(0)
, mOuterRect(0, 0, 0, 0)
, mActivePointerId(-1)
, mTapHoldTimer(nullptr)
, mAppPackageFileDescriptorRecved(false)
, mLastBackgroundColor(NS_RGB(255, 255, 255))
, mDidFakeShow(false)
, mNotified(false)
, mTriedBrowserInit(false)
, mOrientation(eScreenOrientation_PortraitPrimary)
, mUpdateHitRegion(false)
, mPendingTouchPreventedResponse(false)
, mIgnoreKeyPressEvent(false)
, mActiveElementManager(new ActiveElementManager())
, mHasValidInnerSize(false)
, mUniqueId(0)
{
if (!sActiveDurationMsSet) {
Preferences::AddIntVarCache(&sActiveDurationMs,
"ui.touch_activation.duration_ms",
sActiveDurationMs);
sActiveDurationMsSet = true;
}
}
NS_IMETHODIMP
TabChild::HandleEvent(nsIDOMEvent* aEvent)
{
nsAutoString eventType;
aEvent->GetType(eventType);
if (eventType.EqualsLiteral("DOMMetaAdded")) {
// This meta data may or may not have been a meta viewport tag. If it was,
// we should handle it immediately.
HandlePossibleViewportChange();
}
return NS_OK;
}
NS_IMETHODIMP
TabChild::Observe(nsISupports *aSubject,
const char *aTopic,
const char16_t *aData)
{
if (!strcmp(aTopic, BROWSER_ZOOM_TO_RECT)) {
nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(aSubject));
nsCOMPtr<nsITabChild> tabChild(TabChild::GetFrom(docShell));
if (tabChild == this) {
nsCOMPtr<nsIDocument> doc(GetDocument());
uint32_t presShellId;
ViewID viewId;
if (APZCCallbackHelper::GetOrCreateScrollIdentifiers(doc->GetDocumentElement(),
&presShellId, &viewId)) {
CSSRect rect;
sscanf(NS_ConvertUTF16toUTF8(aData).get(),
"{\"x\":%f,\"y\":%f,\"w\":%f,\"h\":%f}",
&rect.x, &rect.y, &rect.width, &rect.height);
SendZoomToRect(presShellId, viewId, rect);
}
}
} else if (!strcmp(aTopic, BEFORE_FIRST_PAINT)) {
if (IsAsyncPanZoomEnabled()) {
nsCOMPtr<nsIDocument> subject(do_QueryInterface(aSubject));
nsCOMPtr<nsIDocument> doc(GetDocument());
if (SameCOMIdentity(subject, doc)) {
nsCOMPtr<nsIDOMWindowUtils> utils(GetDOMWindowUtils());
utils->SetIsFirstPaint(true);
mContentDocumentIsDisplayed = true;
// Reset CSS viewport and zoom to default on new page, then
// calculate them properly using the actual metadata from the
// page.
SetCSSViewport(kDefaultViewportSize);
// In some cases before-first-paint gets called before
// RecvUpdateDimensions is called and therefore before we have an
// mInnerSize value set. In such cases defer initializing the viewport
// until we we get an inner size.
if (HasValidInnerSize()) {
InitializeRootMetrics();
utils->SetResolution(mLastRootMetrics.mResolution.scale,
mLastRootMetrics.mResolution.scale);
HandlePossibleViewportChange();
}
}
}
}
return NS_OK;
}
NS_IMETHODIMP
TabChild::OnStateChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
uint32_t aStateFlags,
nsresult aStatus)
{
NS_NOTREACHED("not implemented in TabChild");
return NS_OK;
}
NS_IMETHODIMP
TabChild::OnProgressChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
int32_t aCurSelfProgress,
int32_t aMaxSelfProgress,
int32_t aCurTotalProgress,
int32_t aMaxTotalProgress)
{
NS_NOTREACHED("not implemented in TabChild");
return NS_OK;
}
NS_IMETHODIMP
TabChild::OnLocationChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
nsIURI *aLocation,
uint32_t aFlags)
{
if (!IsAsyncPanZoomEnabled()) {
return NS_OK;
}
nsCOMPtr<nsIDOMWindow> window;
aWebProgress->GetDOMWindow(getter_AddRefs(window));
if (!window) {
return NS_OK;
}
nsCOMPtr<nsIDOMDocument> progressDoc;
window->GetDocument(getter_AddRefs(progressDoc));
if (!progressDoc) {
return NS_OK;
}
nsCOMPtr<nsIDOMDocument> domDoc;
WebNavigation()->GetDocument(getter_AddRefs(domDoc));
if (!domDoc || !SameCOMIdentity(domDoc, progressDoc)) {
return NS_OK;
}
nsCOMPtr<nsIURIFixup> urifixup(do_GetService(NS_URIFIXUP_CONTRACTID));
if (!urifixup) {
return NS_OK;
}
nsCOMPtr<nsIURI> exposableURI;
urifixup->CreateExposableURI(aLocation, getter_AddRefs(exposableURI));
if (!exposableURI) {
return NS_OK;
}
if (!(aFlags & nsIWebProgressListener::LOCATION_CHANGE_SAME_DOCUMENT)) {
mContentDocumentIsDisplayed = false;
} else if (mLastURI != nullptr) {
bool exposableEqualsLast, exposableEqualsNew;
exposableURI->Equals(mLastURI.get(), &exposableEqualsLast);
exposableURI->Equals(aLocation, &exposableEqualsNew);
if (exposableEqualsLast && !exposableEqualsNew) {
mContentDocumentIsDisplayed = false;
}
}
return NS_OK;
}
NS_IMETHODIMP
TabChild::OnStatusChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
nsresult aStatus,
const char16_t* aMessage)
{
NS_NOTREACHED("not implemented in TabChild");
return NS_OK;
}
NS_IMETHODIMP
TabChild::OnSecurityChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
uint32_t aState)
{
NS_NOTREACHED("not implemented in TabChild");
return NS_OK;
}
bool
TabChild::DoUpdateZoomConstraints(const uint32_t& aPresShellId,
const ViewID& aViewId,
const bool& aIsRoot,
const ZoomConstraints& aConstraints)
{
return SendUpdateZoomConstraints(aPresShellId,
aViewId,
aIsRoot,
aConstraints);
}
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(WebNavigation()));
docShellItem->SetItemType(nsIDocShellTreeItem::typeContentWrapper);
nsCOMPtr<nsIBaseWindow> baseWindow = do_QueryInterface(WebNavigation());
if (!baseWindow) {
NS_ERROR("mWebNav doesn't QI to nsIBaseWindow");
return NS_ERROR_FAILURE;
}
mWidget = nsIWidget::CreatePuppetWidget(this);
if (!mWidget) {
NS_ERROR("couldn't create fake widget");
return NS_ERROR_FAILURE;
}
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();
NotifyTabContextUpdated();
// 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.");
}
nsCOMPtr<nsIDocShell> docShell = do_GetInterface(WebNavigation());
MOZ_ASSERT(docShell);
docShell->SetAffectPrivateSessionLifetime(
mChromeFlags & nsIWebBrowserChrome::CHROME_PRIVATE_LIFETIME);
nsCOMPtr<nsILoadContext> loadContext = do_GetInterface(WebNavigation());
MOZ_ASSERT(loadContext);
loadContext->SetPrivateBrowsing(
mChromeFlags & nsIWebBrowserChrome::CHROME_PRIVATE_WINDOW);
loadContext->SetRemoteTabs(
mChromeFlags & nsIWebBrowserChrome::CHROME_REMOTE_WINDOW);
nsCOMPtr<nsIWebProgress> webProgress = do_GetInterface(docShell);
NS_ENSURE_TRUE(webProgress, NS_ERROR_FAILURE);
webProgress->AddProgressListener(this, nsIWebProgress::NOTIFY_LOCATION);
// Few lines before, baseWindow->Create() will end up creating a new
// window root in nsGlobalWindow::SetDocShell.
// Then this chrome event handler, will be inherited to inner windows.
// We want to also set it to the docshell so that inner windows
// and any code that has access to the docshell
// can all listen to the same chrome event handler.
// XXX: ideally, we would set a chrome event handler earlier,
// and all windows, even the root one, will use the docshell one.
nsCOMPtr<nsPIDOMWindow> window = do_GetInterface(WebNavigation());
NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
nsCOMPtr<EventTarget> chromeHandler =
do_QueryInterface(window->GetChromeEventHandler());
docShell->SetChromeEventHandler(chromeHandler);
return NS_OK;
}
void
TabChild::NotifyTabContextUpdated()
{
nsCOMPtr<nsIDocShell> docShell = do_GetInterface(WebNavigation());
MOZ_ASSERT(docShell);
if (docShell) {
// nsDocShell will do the right thing if we pass NO_APP_ID or
// UNKNOWN_APP_ID for aOwnOrContainingAppId.
if (IsBrowserElement()) {
docShell->SetIsBrowserInsideApp(BrowserOwnerAppId());
} else {
docShell->SetIsApp(OwnAppId());
}
}
}
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(TabChild)
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(nsIDOMEventListener)
NS_INTERFACE_MAP_ENTRY(nsIWebProgressListener)
NS_INTERFACE_MAP_ENTRY(nsITabChild)
NS_INTERFACE_MAP_ENTRY(nsIObserver)
NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
NS_INTERFACE_MAP_ENTRY(nsITooltipListener)
NS_INTERFACE_MAP_END_INHERITING(TabChildBase)
NS_IMPL_ADDREF_INHERITED(TabChild, TabChildBase);
NS_IMPL_RELEASE_INHERITED(TabChild, TabChildBase);
NS_IMETHODIMP
TabChild::SetStatus(uint32_t aStatusType, const char16_t* aStatus)
{
return SetStatusWithContext(aStatusType,
aStatus ? static_cast<const nsString &>(nsDependentString(aStatus))
: EmptyString(),
nullptr);
}
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::DestroyBrowserWindow 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)
{
// We can only send the status after the ipc machinery is set up,
// mRemoteFrame is a good indicator.
if (mRemoteFrame)
SendSetStatus(aStatusType, nsString(aStatusText));
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_WARNING("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(char16_t** aTitle)
{
NS_NOTREACHED("TabChild::GetTitle not supported in TabChild");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
TabChild::SetTitle(const char16_t* aTitle)
{
// JavaScript sends the "DOMTitleChanged" event to the parent
// via the message manager.
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_WARNING("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> or <iframe mozapp> and this
// isn't a request to open a modal-type window, we're going to create a new
// <iframe mozbrowser/mozapp> and return its window here.
nsCOMPtr<nsIDocShell> docshell = do_GetInterface(aParent);
if (docshell && docshell->GetIsInBrowserOrApp() &&
!(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);
}
int32_t openLocation =
nsWindowWatcher::GetWindowOpenLocation(aParent, aChromeFlags, aCalledFromJS,
aPositionSpecified, aSizeSpecified);
// If it turns out we're opening in the current browser, just hand over the
// current browser's docshell.
if (openLocation == nsIBrowserDOMWindow::OPEN_CURRENTWINDOW) {
nsCOMPtr<nsIWebBrowser> browser = do_GetInterface(WebNavigation());
*aWindowIsNew = false;
return browser->GetContentDOMWindow(aReturn);
}
// Otherwise, we're opening a new tab or a new window. We have to contact
// TabParent in order to do either.
PBrowserChild* newChild;
nsAutoCString uriString;
if (aURI) {
aURI->GetSpec(uriString);
}
nsCOMPtr<nsIDOMDocument> domDoc;
aParent->GetDocument(getter_AddRefs(domDoc));
if (!domDoc) {
NS_ERROR("Could retrieve document from nsIBaseWindow");
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIDocument> doc;
doc = do_QueryInterface(domDoc);
if (!doc) {
NS_ERROR("Document from nsIBaseWindow didn't QI to nsIDocument");
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIURI> baseURI = doc->GetDocBaseURI();
if (!baseURI) {
NS_ERROR("nsIDocument didn't return a base URI");
return NS_ERROR_FAILURE;
}
nsAutoCString baseURIString;
baseURI->GetSpec(baseURIString);
nsAutoString nameString;
nameString.Assign(aName);
nsAutoCString features;
// We can assume that if content is requesting to open a window from a remote
// tab, then we want to enforce that the new window is also a remote tab.
features.Assign(aFeatures);
features.Append(",remote");
if (!CallCreateWindow(aChromeFlags, aCalledFromJS, aPositionSpecified,
aSizeSpecified, NS_ConvertUTF8toUTF16(uriString),
nameString, NS_ConvertUTF8toUTF16(features),
NS_ConvertUTF8toUTF16(baseURIString),
aWindowIsNew, &newChild)) {
return NS_ERROR_NOT_AVAILABLE;
}
nsCOMPtr<nsIDOMWindow> win =
do_GetInterface(static_cast<TabChild*>(newChild)->WebNavigation());
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;
nsRefPtr<TabChild> newChild =
new TabChild(ContentChild::GetSingleton(),
/* TabContext */ *this, /* chromeFlags */ 0);
if (!NS_SUCCEEDED(newChild->Init())) {
return NS_ERROR_ABORT;
}
// We must use PopupIPCTabContext here; ContentParent will not accept the
// result of this->AsIPCTabContext() (which will be a
// BrowserFrameIPCTabContext or an AppFrameIPCTabContext), for security
// reasons.
PopupIPCTabContext context;
context.openerChild() = this;
context.isBrowserElement() = IsBrowserElement();
ContentChild* cc = static_cast<ContentChild*>(Manager());
unused << Manager()->SendPBrowserConstructor(
// We release this ref in DeallocPBrowserChild
nsRefPtr<TabChild>(newChild).forget().take(),
IPCTabContext(context, mScrolling), /* chromeFlags */ 0,
cc->GetID(), cc->IsForApp(), cc->IsForBrowser());
nsAutoCString 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->WebNavigation());
win.forget(aReturn);
return NS_OK;
}
bool
TabChild::HasValidInnerSize()
{
return mHasValidInnerSize;
}
#ifdef DEBUG
PContentPermissionRequestChild*
TabChild:: SendPContentPermissionRequestConstructor(PContentPermissionRequestChild* aActor,
const InfallibleTArray<PermissionRequest>& aRequests,
const IPC::Principal& aPrincipal)
{
PCOMContentPermissionRequestChild* child = static_cast<PCOMContentPermissionRequestChild*>(aActor);
PContentPermissionRequestChild* request = PBrowserChild::SendPContentPermissionRequestConstructor(aActor, aRequests, aPrincipal);
child->mIPCOpen = true;
return request;
}
#endif /* DEBUG */
void
TabChild::DestroyWindow()
{
nsCOMPtr<nsIBaseWindow> baseWindow = do_QueryInterface(WebNavigation());
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;
}
if (mLayersId != 0) {
MOZ_ASSERT(sTabChildren);
sTabChildren->Remove(mLayersId);
if (!sTabChildren->Count()) {
delete sTabChildren;
sTabChildren = nullptr;
}
mLayersId = 0;
}
for (uint32_t index = 0, count = mCachedFileDescriptorInfos.Length();
index < count;
index++) {
nsAutoPtr<CachedFileDescriptorInfo>& info =
mCachedFileDescriptorInfos[index];
MOZ_ASSERT(!info->mCallback);
if (info->mFileDescriptor.IsValid()) {
MOZ_ASSERT(!info->mCanceled);
nsRefPtr<CloseFileRunnable> runnable =
new CloseFileRunnable(info->mFileDescriptor);
runnable->Dispatch();
}
}
}
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;
}
if (Id() != 0) {
NestedTabChildMap().erase(Id());
}
}
TabChild::~TabChild()
{
DestroyWindow();
nsCOMPtr<nsIWebBrowser> webBrowser = do_QueryInterface(WebNavigation());
if (webBrowser) {
webBrowser->SetContainerWindow(nullptr);
}
}
void
TabChild::SetProcessNameToAppName()
{
nsCOMPtr<mozIApplication> app = GetOwnApp();
if (!app) {
return;
}
nsAutoString appName;
nsresult rv = app->GetName(appName);
if (NS_FAILED(rv)) {
NS_WARNING("Failed to retrieve app name");
return;
}
ContentChild::GetSingleton()->SetProcessName(appName, true);
}
bool
TabChild::IsRootContentDocument()
{
// A TabChild is a "root content document" if it's
//
// - <iframe mozapp> not inside another <iframe mozapp>,
// - <iframe mozbrowser> (not mozapp), or
// - a vanilla remote frame (<html:iframe remote=true> or <xul:browser
// remote=true>).
//
// Put another way, an iframe is /not/ a "root content document" iff it's a
// mozapp inside a mozapp. (This corresponds exactly to !HasAppOwnerApp.)
//
// Note that we're lying through our teeth here (thus the scare quotes).
// <html:iframe remote=true> or <xul:browser remote=true> inside another
// content iframe is not actually a root content document, but we say it is.
//
// We do this because we make a remote frame opaque iff
// IsRootContentDocument(), and making vanilla remote frames transparent
// breaks our remote reftests.
return !HasAppOwnerApp();
}
bool
TabChild::RecvLoadURL(const nsCString& uri)
{
SetProcessNameToAppName();
nsresult rv = WebNavigation()->LoadURI(NS_ConvertUTF8toUTF16(uri).get(),
nsIWebNavigation::LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP |
nsIWebNavigation::LOAD_FLAGS_DISALLOW_INHERIT_OWNER,
nullptr, nullptr, nullptr);
if (NS_FAILED(rv)) {
NS_WARNING("WebNavigation()->LoadURI failed. Eating exception, what else can I do?");
}
#ifdef MOZ_CRASHREPORTER
CrashReporter::AnnotateCrashReport(NS_LITERAL_CSTRING("URL"), uri);
#endif
return true;
}
bool
TabChild::RecvCacheFileDescriptor(const nsString& aPath,
const FileDescriptor& aFileDescriptor)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(!aPath.IsEmpty());
MOZ_ASSERT(!mAppPackageFileDescriptorRecved);
mAppPackageFileDescriptorRecved = true;
// aFileDescriptor may be invalid here, but the callback will choose how to
// handle it.
// First see if we already have a request for this path.
const CachedFileDescriptorInfo search(aPath);
size_t index =
mCachedFileDescriptorInfos.IndexOf(search, 0,
search.PathOnlyComparator());
if (index == mCachedFileDescriptorInfos.NoIndex) {
// We haven't had any requests for this path yet. Assume that we will
// in a little while and save the file descriptor here.
mCachedFileDescriptorInfos.AppendElement(
new CachedFileDescriptorInfo(aPath, aFileDescriptor));
return true;
}
nsAutoPtr<CachedFileDescriptorInfo>& info =
mCachedFileDescriptorInfos[index];
MOZ_ASSERT(info);
MOZ_ASSERT(info->mPath == aPath);
MOZ_ASSERT(!info->mFileDescriptor.IsValid());
MOZ_ASSERT(info->mCallback);
// If this callback has been canceled then we can simply close the file
// descriptor and forget about the callback.
if (info->mCanceled) {
// Only close if this is a valid file descriptor.
if (aFileDescriptor.IsValid()) {
nsRefPtr<CloseFileRunnable> runnable =
new CloseFileRunnable(aFileDescriptor);
runnable->Dispatch();
}
} else {
// Not canceled so fire the callback.
info->mFileDescriptor = aFileDescriptor;
// We don't need a runnable here because we should already be at the top
// of the event loop. Just fire immediately.
info->FireCallback();
}
mCachedFileDescriptorInfos.RemoveElementAt(index);
return true;
}
bool
TabChild::GetCachedFileDescriptor(const nsAString& aPath,
nsICachedFileDescriptorListener* aCallback)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(!aPath.IsEmpty());
MOZ_ASSERT(aCallback);
// First see if we've already received a cached file descriptor for this
// path.
const CachedFileDescriptorInfo search(aPath);
size_t index =
mCachedFileDescriptorInfos.IndexOf(search, 0,
search.PathOnlyComparator());
if (index == mCachedFileDescriptorInfos.NoIndex) {
// We haven't received a file descriptor for this path yet. Assume that
// we will in a little while and save the request here.
if (!mAppPackageFileDescriptorRecved) {
mCachedFileDescriptorInfos.AppendElement(
new CachedFileDescriptorInfo(aPath, aCallback));
}
return false;
}
nsAutoPtr<CachedFileDescriptorInfo>& info =
mCachedFileDescriptorInfos[index];
MOZ_ASSERT(info);
MOZ_ASSERT(info->mPath == aPath);
// If we got a previous request for this file descriptor that was then
// canceled, insert the new request ahead of the old in the queue so that
// it will be serviced first.
if (info->mCanceled) {
// This insertion will change the array and invalidate |info|, so
// be careful not to touch |info| after this.
mCachedFileDescriptorInfos.InsertElementAt(index,
new CachedFileDescriptorInfo(aPath, aCallback));
return false;
}
MOZ_ASSERT(!info->mCallback);
info->mCallback = aCallback;
nsRefPtr<CachedFileDescriptorCallbackRunnable> runnable =
new CachedFileDescriptorCallbackRunnable(info.forget());
runnable->Dispatch();
mCachedFileDescriptorInfos.RemoveElementAt(index);
return true;
}
void
TabChild::CancelCachedFileDescriptorCallback(
const nsAString& aPath,
nsICachedFileDescriptorListener* aCallback)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(!aPath.IsEmpty());
MOZ_ASSERT(aCallback);
if (mAppPackageFileDescriptorRecved) {
// Already received cached file descriptor for the app package. Nothing to do here.
return;
}
const CachedFileDescriptorInfo search(aPath, aCallback);
size_t index =
mCachedFileDescriptorInfos.IndexOf(search, 0,
search.PathAndCallbackComparator());
if (index == mCachedFileDescriptorInfos.NoIndex) {
// Nothing to do here.
return;
}
nsAutoPtr<CachedFileDescriptorInfo>& info =
mCachedFileDescriptorInfos[index];
MOZ_ASSERT(info);
MOZ_ASSERT(info->mPath == aPath);
MOZ_ASSERT(!info->mFileDescriptor.IsValid());
MOZ_ASSERT(info->mCallback == aCallback);
MOZ_ASSERT(!info->mCanceled);
// No need to hold the callback any longer.
info->mCallback = nullptr;
// Set this flag so that we will close the file descriptor when it arrives.
info->mCanceled = true;
}
void
TabChild::DoFakeShow()
{
RecvShow(nsIntSize(0, 0));
mDidFakeShow = true;
}
bool
TabChild::RecvShow(const nsIntSize& size)
{
if (mDidFakeShow) {
return true;
}
nsCOMPtr<nsIBaseWindow> baseWindow = do_QueryInterface(WebNavigation());
if (!baseWindow) {
NS_ERROR("WebNavigation() 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, const ScreenOrientation& orientation)
{
if (!mRemoteFrame) {
return true;
}
mOuterRect.x = rect.x;
mOuterRect.y = rect.y;
mOuterRect.width = rect.width;
mOuterRect.height = rect.height;
bool initialSizing = !HasValidInnerSize()
&& (size.width != 0 && size.height != 0);
if (initialSizing) {
mHasValidInnerSize = true;
}
mOrientation = orientation;
mInnerSize = ScreenIntSize::FromUnknownSize(
gfx::IntSize(size.width, size.height));
mWidget->Resize(0, 0, size.width, size.height,
true);
nsCOMPtr<nsIBaseWindow> baseWin = do_QueryInterface(WebNavigation());
baseWin->SetPositionAndSize(0, 0, size.width, size.height,
true);
if (initialSizing && mContentDocumentIsDisplayed) {
// If this is the first time we're getting a valid mInnerSize, and the
// before-first-paint event has already been handled, then we need to set
// up our default viewport here. See the corresponding call to
// InitializeRootMetrics in the before-first-paint handler.
InitializeRootMetrics();
}
HandlePossibleViewportChange();
return true;
}
bool
TabChild::RecvUpdateFrame(const FrameMetrics& aFrameMetrics)
{
return TabChildBase::UpdateFrameHandler(aFrameMetrics);
}
bool
TabChild::RecvAcknowledgeScrollUpdate(const ViewID& aScrollId,
const uint32_t& aScrollGeneration)
{
APZCCallbackHelper::AcknowledgeScrollUpdate(aScrollId, aScrollGeneration);
return true;
}
bool
TabChild::RecvHandleDoubleTap(const CSSPoint& aPoint, const ScrollableLayerGuid& aGuid)
{
if (!mGlobal || !mTabChildGlobal) {
return true;
}
CSSPoint point = APZCCallbackHelper::ApplyCallbackTransform(aPoint, aGuid);
nsString data;
data.AppendLiteral("{ \"x\" : ");
data.AppendFloat(point.x);
data.AppendLiteral(", \"y\" : ");
data.AppendFloat(point.y);
data.AppendLiteral(" }");
DispatchMessageManagerMessage(NS_LITERAL_STRING("Gesture:DoubleTap"), data);
return true;
}
bool
TabChild::RecvHandleSingleTap(const CSSPoint& aPoint, const ScrollableLayerGuid& aGuid)
{
if (!mGlobal || !mTabChildGlobal) {
return true;
}
LayoutDevicePoint currentPoint = APZCCallbackHelper::ApplyCallbackTransform(aPoint, aGuid) * mWidget->GetDefaultScale();;
MessageLoop::current()->PostDelayedTask(
FROM_HERE,
NewRunnableMethod(this, &TabChild::FireSingleTapEvent, currentPoint),
sActiveDurationMs);
return true;
}
void
TabChild::FireSingleTapEvent(LayoutDevicePoint aPoint)
{
int time = 0;
DispatchSynthesizedMouseEvent(NS_MOUSE_MOVE, time, aPoint, mWidget);
DispatchSynthesizedMouseEvent(NS_MOUSE_BUTTON_DOWN, time, aPoint, mWidget);
DispatchSynthesizedMouseEvent(NS_MOUSE_BUTTON_UP, time, aPoint, mWidget);
}
bool
TabChild::RecvHandleLongTap(const CSSPoint& aPoint, const ScrollableLayerGuid& aGuid)
{
if (!mGlobal || !mTabChildGlobal) {
return true;
}
bool eventHandled =
DispatchMouseEvent(NS_LITERAL_STRING("contextmenu"),
APZCCallbackHelper::ApplyCallbackTransform(aPoint, aGuid),
2, 1, 0, false,
nsIDOMMouseEvent::MOZ_SOURCE_TOUCH);
// If no one handle context menu, fire MOZLONGTAP event
if (!eventHandled) {
LayoutDevicePoint currentPoint =
APZCCallbackHelper::ApplyCallbackTransform(aPoint, aGuid) * mWidget->GetDefaultScale();
int time = 0;
nsEventStatus status =
DispatchSynthesizedMouseEvent(NS_MOUSE_MOZLONGTAP, time, currentPoint, mWidget);
eventHandled = (status == nsEventStatus_eConsumeNoDefault);
}
SendContentReceivedTouch(aGuid, eventHandled);
return true;
}
bool
TabChild::RecvHandleLongTapUp(const CSSPoint& aPoint, const ScrollableLayerGuid& aGuid)
{
RecvHandleSingleTap(aPoint, aGuid);
return true;
}
bool
TabChild::RecvNotifyAPZStateChange(const ViewID& aViewId,
const APZStateChange& aChange,
const int& aArg)
{
switch (aChange)
{
case APZStateChange::TransformBegin:
{
nsIScrollableFrame* sf = nsLayoutUtils::FindScrollableFrameFor(aViewId);
nsIScrollbarOwner* scrollbarOwner = do_QueryFrame(sf);
if (scrollbarOwner) {
scrollbarOwner->ScrollbarActivityStarted();
}
break;
}
case APZStateChange::TransformEnd:
{
nsIScrollableFrame* sf = nsLayoutUtils::FindScrollableFrameFor(aViewId);
nsIScrollbarOwner* scrollbarOwner = do_QueryFrame(sf);
if (scrollbarOwner) {
scrollbarOwner->ScrollbarActivityStopped();
}
break;
}
case APZStateChange::StartTouch:
{
mActiveElementManager->HandleTouchStart(aArg);
break;
}
case APZStateChange::StartPanning:
{
mActiveElementManager->HandlePanStart();
break;
}
case APZStateChange::EndTouch:
{
mActiveElementManager->HandleTouchEnd(aArg);
break;
}
default:
// APZStateChange has a 'sentinel' value, and the compiler complains
// if an enumerator is not handled and there is no 'default' case.
break;
}
return true;
}
bool
TabChild::RecvActivate()
{
nsCOMPtr<nsIWebBrowserFocus> browser = do_QueryInterface(WebNavigation());
browser->Activate();
return true;
}
bool TabChild::RecvDeactivate()
{
nsCOMPtr<nsIWebBrowserFocus> browser = do_QueryInterface(WebNavigation());
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)
{
DispatchMouseEvent(aType, CSSPoint(aX, aY), aButton, aClickCount, aModifiers,
aIgnoreRootScrollFrame, nsIDOMMouseEvent::MOZ_SOURCE_UNKNOWN);
return true;
}
bool
TabChild::RecvRealMouseEvent(const WidgetMouseEvent& event)
{
WidgetMouseEvent localEvent(event);
localEvent.widget = mWidget;
DispatchWidgetEvent(localEvent);
return true;
}
bool
TabChild::RecvMouseWheelEvent(const WidgetWheelEvent& event)
{
WidgetWheelEvent localEvent(event);
localEvent.widget = mWidget;
DispatchWidgetEvent(localEvent);
return true;
}
static Touch*
GetTouchForIdentifier(const WidgetTouchEvent& aEvent, int32_t aId)
{
for (uint32_t i = 0; i < aEvent.touches.Length(); ++i) {
Touch* touch = static_cast<Touch*>(aEvent.touches[i].get());
if (touch->mIdentifier == aId) {
return touch;
}
}
return nullptr;
}
void
TabChild::UpdateTapState(const WidgetTouchEvent& aEvent, nsEventStatus aStatus)
{
static bool sHavePrefs;
static bool sClickHoldContextMenusEnabled;
static nsIntSize sDragThreshold;
static int32_t sContextMenuDelayMs;
if (!sHavePrefs) {
sHavePrefs = true;
Preferences::AddBoolVarCache(&sClickHoldContextMenusEnabled,
"ui.click_hold_context_menus", true);
Preferences::AddIntVarCache(&sDragThreshold.width,
"ui.dragThresholdX", 25);
Preferences::AddIntVarCache(&sDragThreshold.height,
"ui.dragThresholdY", 25);
Preferences::AddIntVarCache(&sContextMenuDelayMs,
"ui.click_hold_context_menus.delay", 500);
}
if (aEvent.touches.Length() == 0) {
return;
}
bool currentlyTrackingTouch = (mActivePointerId >= 0);
if (aEvent.message == NS_TOUCH_START) {
if (currentlyTrackingTouch || aEvent.touches.Length() > 1) {
// We're tracking a possible tap for another point, or we saw a
// touchstart for a later pointer after we canceled tracking of
// the first point. Ignore this one.
return;
}
if (aStatus == nsEventStatus_eConsumeNoDefault ||
nsIPresShell::gPreventMouseEvents ||
aEvent.mFlags.mMultipleActionsPrevented) {
return;
}
Touch* touch = aEvent.touches[0];
mGestureDownPoint = LayoutDevicePoint(touch->mRefPoint.x, touch->mRefPoint.y);
mActivePointerId = touch->mIdentifier;
if (sClickHoldContextMenusEnabled) {
MOZ_ASSERT(!mTapHoldTimer);
mTapHoldTimer = NewRunnableMethod(this,
&TabChild::FireContextMenuEvent);
MessageLoop::current()->PostDelayedTask(FROM_HERE, mTapHoldTimer,
sContextMenuDelayMs);
}
return;
}
// If we're not tracking a touch or this event doesn't include the
// one we care about, bail.
if (!currentlyTrackingTouch) {
return;
}
Touch* trackedTouch = GetTouchForIdentifier(aEvent, mActivePointerId);
if (!trackedTouch) {
return;
}
LayoutDevicePoint currentPoint = LayoutDevicePoint(trackedTouch->mRefPoint.x, trackedTouch->mRefPoint.y);
int64_t time = aEvent.time;
switch (aEvent.message) {
case NS_TOUCH_MOVE:
if (abs(currentPoint.x - mGestureDownPoint.x) > sDragThreshold.width ||
abs(currentPoint.y - mGestureDownPoint.y) > sDragThreshold.height) {
CancelTapTracking();
}
return;
case NS_TOUCH_END:
if (!nsIPresShell::gPreventMouseEvents) {
DispatchSynthesizedMouseEvent(NS_MOUSE_MOVE, time, currentPoint, mWidget);
DispatchSynthesizedMouseEvent(NS_MOUSE_BUTTON_DOWN, time, currentPoint, mWidget);
DispatchSynthesizedMouseEvent(NS_MOUSE_BUTTON_UP, time, currentPoint, mWidget);
}
// fall through
case NS_TOUCH_CANCEL:
CancelTapTracking();
return;
default:
NS_WARNING("Unknown touch event type");
}
}
void
TabChild::FireContextMenuEvent()
{
double scale;
GetDefaultScale(&scale);
if (scale < 0) {
scale = 1;
}
MOZ_ASSERT(mTapHoldTimer && mActivePointerId >= 0);
bool defaultPrevented = DispatchMouseEvent(NS_LITERAL_STRING("contextmenu"),
mGestureDownPoint / CSSToLayoutDeviceScale(scale),
2 /* Right button */,
1 /* Click count */,
0 /* Modifiers */,
false /* Ignore root scroll frame */,
nsIDOMMouseEvent::MOZ_SOURCE_TOUCH);
// Fire a click event if someone didn't call preventDefault() on the context
// menu event.
if (defaultPrevented) {
CancelTapTracking();
} else if (mTapHoldTimer) {
mTapHoldTimer->Cancel();
mTapHoldTimer = nullptr;
}
}
void
TabChild::CancelTapTracking()
{
mActivePointerId = -1;
if (mTapHoldTimer) {
mTapHoldTimer->Cancel();
}
mTapHoldTimer = nullptr;
}
bool
TabChild::RecvRealTouchEvent(const WidgetTouchEvent& aEvent,
const ScrollableLayerGuid& aGuid)
{
WidgetTouchEvent localEvent(aEvent);
localEvent.widget = mWidget;
for (size_t i = 0; i < localEvent.touches.Length(); i++) {
aEvent.touches[i]->mRefPoint = APZCCallbackHelper::ApplyCallbackTransform(aEvent.touches[i]->mRefPoint, aGuid, mWidget->GetDefaultScale());
}
nsEventStatus status = DispatchWidgetEvent(localEvent);
if (!IsAsyncPanZoomEnabled()) {
UpdateTapState(localEvent, status);
return true;
}
if (aEvent.message == NS_TOUCH_START && localEvent.touches.Length() > 0) {
mActiveElementManager->SetTargetElement(localEvent.touches[0]->GetTarget());
}
bool isTouchPrevented = nsIPresShell::gPreventMouseEvents ||
localEvent.mFlags.mMultipleActionsPrevented;
switch (aEvent.message) {
case NS_TOUCH_START: {
if (mPendingTouchPreventedResponse) {
// We can enter here if we get two TOUCH_STARTs in a row and didn't
// respond to the first one. Respond to it now.
SendContentReceivedTouch(mPendingTouchPreventedGuid, false);
mPendingTouchPreventedResponse = false;
}
if (isTouchPrevented) {
SendContentReceivedTouch(aGuid, isTouchPrevented);
} else {
mPendingTouchPreventedResponse = true;
mPendingTouchPreventedGuid = aGuid;
}
break;
}
case NS_TOUCH_MOVE:
case NS_TOUCH_END:
case NS_TOUCH_CANCEL: {
if (mPendingTouchPreventedResponse) {
MOZ_ASSERT(aGuid == mPendingTouchPreventedGuid);
SendContentReceivedTouch(mPendingTouchPreventedGuid, isTouchPrevented);
mPendingTouchPreventedResponse = false;
}
break;
}
default:
NS_WARNING("Unknown touch event type");
}
return true;
}
bool
TabChild::RecvRealTouchMoveEvent(const WidgetTouchEvent& aEvent,
const ScrollableLayerGuid& aGuid)
{
return RecvRealTouchEvent(aEvent, aGuid);
}
void
TabChild::RequestNativeKeyBindings(AutoCacheNativeKeyCommands* aAutoCache,
WidgetKeyboardEvent* aEvent)
{
MaybeNativeKeyBinding maybeBindings;
if (!SendRequestNativeKeyBindings(*aEvent, &maybeBindings)) {
return;
}
if (maybeBindings.type() == MaybeNativeKeyBinding::TNativeKeyBinding) {
const NativeKeyBinding& bindings = maybeBindings;
aAutoCache->Cache(bindings.singleLineCommands(),
bindings.multiLineCommands(),
bindings.richTextCommands());
} else {
aAutoCache->CacheNoCommands();
}
}
bool
TabChild::RecvRealKeyEvent(const WidgetKeyboardEvent& event,
const MaybeNativeKeyBinding& aBindings)
{
PuppetWidget* widget = static_cast<PuppetWidget*>(mWidget.get());
AutoCacheNativeKeyCommands autoCache(widget);
if (event.message == NS_KEY_PRESS) {
if (aBindings.type() == MaybeNativeKeyBinding::TNativeKeyBinding) {
const NativeKeyBinding& bindings = aBindings;
autoCache.Cache(bindings.singleLineCommands(),
bindings.multiLineCommands(),
bindings.richTextCommands());
} else {
autoCache.CacheNoCommands();
}
}
// If content code called preventDefault() on a keydown event, then we don't
// want to process any following keypress events.
if (event.message == NS_KEY_PRESS && mIgnoreKeyPressEvent) {
return true;
}
WidgetKeyboardEvent localEvent(event);
localEvent.widget = mWidget;
nsEventStatus status = DispatchWidgetEvent(localEvent);
if (event.message == NS_KEY_DOWN) {
mIgnoreKeyPressEvent = status == nsEventStatus_eConsumeNoDefault;
}
if (localEvent.mFlags.mWantReplyFromContentProcess) {
SendReplyKeyEvent(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<nsIDOMWindowUtils> utils(GetDOMWindowUtils());
NS_ENSURE_TRUE(utils, true);
bool ignored = false;
utils->SendKeyEvent(aType, aKeyCode, aCharCode,
aModifiers, aPreventDefault, &ignored);
return true;
}
bool
TabChild::RecvCompositionEvent(const WidgetCompositionEvent& event)
{
WidgetCompositionEvent localEvent(event);
localEvent.widget = mWidget;
DispatchWidgetEvent(localEvent);
return true;
}
bool
TabChild::RecvTextEvent(const WidgetTextEvent& event)
{
WidgetTextEvent localEvent(event);
localEvent.widget = mWidget;
DispatchWidgetEvent(localEvent);
return true;
}
bool
TabChild::RecvSelectionEvent(const WidgetSelectionEvent& event)
{
WidgetSelectionEvent localEvent(event);
localEvent.widget = mWidget;
DispatchWidgetEvent(localEvent);
return true;
}
PDocumentRendererChild*
TabChild::AllocPDocumentRendererChild(const nsRect& documentRect,
const mozilla::gfx::Matrix& transform,
const nsString& bgcolor,
const uint32_t& renderFlags,
const bool& flushLayout,
const nsIntSize& renderSize)
{
return new DocumentRendererChild();
}
bool
TabChild::DeallocPDocumentRendererChild(PDocumentRendererChild* actor)
{
delete actor;
return true;
}
bool
TabChild::RecvPDocumentRendererConstructor(PDocumentRendererChild* actor,
const nsRect& documentRect,
const mozilla::gfx::Matrix& 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(WebNavigation());
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);
}
PColorPickerChild*
TabChild::AllocPColorPickerChild(const nsString&, const nsString&)
{
NS_RUNTIMEABORT("unused");
return nullptr;
}
bool
TabChild::DeallocPColorPickerChild(PColorPickerChild* aColorPicker)
{
nsColorPickerProxy* picker = static_cast<nsColorPickerProxy*>(aColorPicker);
NS_RELEASE(picker);
return true;
}
PContentPermissionRequestChild*
TabChild::AllocPContentPermissionRequestChild(const InfallibleTArray<PermissionRequest>& aRequests,
const IPC::Principal& aPrincipal)
{
NS_RUNTIMEABORT("unused");
return nullptr;
}
bool
TabChild::DeallocPContentPermissionRequestChild(PContentPermissionRequestChild* actor)
{
PCOMContentPermissionRequestChild* child =
static_cast<PCOMContentPermissionRequestChild*>(actor);
#ifdef DEBUG
child->mIPCOpen = false;
#endif /* DEBUG */
child->IPDLRelease();
return true;
}
PFilePickerChild*
TabChild::AllocPFilePickerChild(const nsString&, const int16_t&)
{
NS_RUNTIMEABORT("unused");
return nullptr;
}
bool
TabChild::DeallocPFilePickerChild(PFilePickerChild* actor)
{
nsFilePickerProxy* filePicker = static_cast<nsFilePickerProxy*>(actor);
NS_RELEASE(filePicker);
return true;
}
bool
TabChild::RecvActivateFrameEvent(const nsString& aType, const bool& capture)
{
nsCOMPtr<nsPIDOMWindow> window = do_GetInterface(WebNavigation());
NS_ENSURE_TRUE(window, true);
nsCOMPtr<EventTarget> chromeHandler =
do_QueryInterface(window->GetChromeEventHandler());
NS_ENSURE_TRUE(chromeHandler, true);
nsRefPtr<ContentListener> listener = new ContentListener(this);
chromeHandler->AddEventListener(aType, listener, capture);
return true;
}
POfflineCacheUpdateChild*
TabChild::AllocPOfflineCacheUpdateChild(const URIParams& manifestURI,
const URIParams& documentURI,
const bool& stickDocument)
{
NS_RUNTIMEABORT("unused");
return nullptr;
}
bool
TabChild::DeallocPOfflineCacheUpdateChild(POfflineCacheUpdateChild* actor)
{
OfflineCacheUpdateChild* offlineCacheUpdate = static_cast<OfflineCacheUpdateChild*>(actor);
NS_RELEASE(offlineCacheUpdate);
return true;
}
bool
TabChild::RecvLoadRemoteScript(const nsString& aURL, const bool& aRunInGlobalScope)
{
if (!mGlobal && !InitTabChildGlobal())
// This can happen if we're half-destroyed. It's not a fatal
// error.
return true;
LoadFrameScriptInternal(aURL, aRunInGlobalScope);
return true;
}
bool
TabChild::RecvAsyncMessage(const nsString& aMessage,
const ClonedMessageData& aData,
const InfallibleTArray<CpowEntry>& aCpows,
const IPC::Principal& aPrincipal)
{
if (mTabChildGlobal) {
nsCOMPtr<nsIXPConnectJSObjectHolder> kungFuDeathGrip(GetGlobal());
StructuredCloneData cloneData = UnpackClonedMessageDataForChild(aData);
nsRefPtr<nsFrameMessageManager> mm =
static_cast<nsFrameMessageManager*>(mTabChildGlobal->mMessageManager.get());
CpowIdHolder cpows(Manager()->GetCPOWManager(), aCpows);
mm->ReceiveMessage(static_cast<EventTarget*>(mTabChildGlobal),
aMessage, false, &cloneData, &cpows, aPrincipal, 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), mTabChildGlobal, 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)
);
}
nsCOMPtr<nsIObserverService> observerService =
mozilla::services::GetObserverService();
observerService->RemoveObserver(this, BROWSER_ZOOM_TO_RECT);
observerService->RemoveObserver(this, BEFORE_FIRST_PAINT);
const InfallibleTArray<PIndexedDBChild*>& idbActors =
ManagedPIndexedDBChild();
for (uint32_t i = 0; i < idbActors.Length(); ++i) {
static_cast<IndexedDBChild*>(idbActors[i])->Disconnect();
}
// XXX what other code in ~TabChild() should we be running here?
DestroyWindow();
return Send__delete__(this);
}
bool
TabChild::RecvSetUpdateHitRegion(const bool& aEnabled)
{
mUpdateHitRegion = aEnabled;
return true;
}
bool
TabChild::RecvSetIsDocShellActive(const bool& aIsActive)
{
nsCOMPtr<nsIDocShell> docShell = do_GetInterface(WebNavigation());
if (docShell) {
docShell->SetIsActive(aIsActive);
}
return true;
}
PRenderFrameChild*
TabChild::AllocPRenderFrameChild(ScrollingBehavior* aScrolling,
TextureFactoryIdentifier* aTextureFactoryIdentifier,
uint64_t* aLayersId,
bool* aSuccess)
{
return new RenderFrameChild();
}
bool
TabChild::DeallocPRenderFrameChild(PRenderFrameChild* aFrame)
{
delete aFrame;
return true;
}
bool
TabChild::InitTabChildGlobal(FrameScriptLoading aScriptLoading)
{
if (!mGlobal && !mTabChildGlobal) {
nsCOMPtr<nsPIDOMWindow> window = do_GetInterface(WebNavigation());
NS_ENSURE_TRUE(window, false);
nsCOMPtr<EventTarget> chromeHandler =
do_QueryInterface(window->GetChromeEventHandler());
NS_ENSURE_TRUE(chromeHandler, false);
nsRefPtr<TabChildGlobal> scope = new TabChildGlobal(this);
mTabChildGlobal = scope;
nsISupports* scopeSupports = NS_ISUPPORTS_CAST(EventTarget*, scope);
NS_NAMED_LITERAL_CSTRING(globalId, "outOfProcessTabChildGlobal");
NS_ENSURE_TRUE(InitTabChildGlobalInternal(scopeSupports, globalId), false);
scope->Init();
nsCOMPtr<nsPIWindowRoot> root = do_QueryInterface(chromeHandler);
NS_ENSURE_TRUE(root, false);
root->SetParentTarget(scope);
chromeHandler->AddEventListener(NS_LITERAL_STRING("DOMMetaAdded"), this, false);
}
if (aScriptLoading != DONT_LOAD_SCRIPTS && !mTriedBrowserInit) {
mTriedBrowserInit = true;
// Initialize the child side of the browser element machinery,
// if appropriate.
if (IsBrowserOrApp()) {
RecvLoadRemoteScript(BROWSER_ELEMENT_CHILD_SCRIPT, true);
}
}
return true;
}
bool
TabChild::InitRenderingState()
{
static_cast<PuppetWidget*>(mWidget.get())->InitIMEState();
uint64_t id;
bool success;
RenderFrameChild* remoteFrame =
static_cast<RenderFrameChild*>(SendPRenderFrameConstructor(
&mScrolling,
&mTextureFactoryIdentifier, &id,
&success));
if (!remoteFrame) {
NS_WARNING("failed to construct RenderFrame");
return false;
}
if (!success) {
NS_WARNING("failed to construct RenderFrame");
PRenderFrameChild::Send__delete__(remoteFrame);
return false;
}
PLayerTransactionChild* shadowManager = nullptr;
if (id != 0) {
// Pushing layers transactions directly to a separate
// compositor context.
PCompositorChild* compositorChild = CompositorChild::Get();
if (!compositorChild) {
NS_WARNING("failed to get CompositorChild instance");
return false;
}
nsTArray<LayersBackend> backends;
backends.AppendElement(mTextureFactoryIdentifier.mParentBackend);
bool success;
shadowManager =
compositorChild->SendPLayerTransactionConstructor(backends,
id, &mTextureFactoryIdentifier, &success);
if (!success) {
NS_WARNING("failed to properly allocate layer transaction");
return false;
}
} else {
// Pushing transactions to the parent content.
shadowManager = remoteFrame->SendPLayerTransactionConstructor();
}
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, mTextureFactoryIdentifier.mParentBackend)
->AsShadowForwarder();
NS_ABORT_IF_FALSE(lf && lf->HasShadowManager(),
"PuppetWidget should have shadow manager");
lf->IdentifyTextureHost(mTextureFactoryIdentifier);
ImageBridgeChild::IdentifyCompositorTextureHost(mTextureFactoryIdentifier);
mRemoteFrame = remoteFrame;
if (id != 0) {
if (!sTabChildren) {
sTabChildren = new TabChildMap;
}
MOZ_ASSERT(!sTabChildren->Get(id));
sTabChildren->Put(id, this);
mLayersId = id;
}
nsCOMPtr<nsIObserverService> observerService =
mozilla::services::GetObserverService();
if (observerService) {
observerService->AddObserver(this,
BROWSER_ZOOM_TO_RECT,
false);
observerService->AddObserver(this,
BEFORE_FIRST_PAINT,
false);
}
// This state can't change during the lifetime of the child.
sCpowsEnabled = BrowserTabsRemote();
if (Preferences::GetBool("dom.ipc.cpows.force-enabled", false))
sCpowsEnabled = true;
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::GetDefaultScale(double* aScale)
{
*aScale = -1.0;
if (!mRemoteFrame) {
return;
}
SendGetDefaultScale(aScale);
}
void
TabChild::NotifyPainted()
{
if (UseDirectCompositor() && !mNotified) {
mRemoteFrame->SendNotifyCompositorTransaction();
mNotified = true;
}
}
bool
TabChild::DispatchMouseEvent(const nsString& aType,
const CSSPoint& aPoint,
const int32_t& aButton,
const int32_t& aClickCount,
const int32_t& aModifiers,
const bool& aIgnoreRootScrollFrame,
const unsigned short& aInputSourceArg)
{
nsCOMPtr<nsIDOMWindowUtils> utils(GetDOMWindowUtils());
NS_ENSURE_TRUE(utils, true);
bool defaultPrevented = false;
utils->SendMouseEvent(aType, aPoint.x, aPoint.y, aButton, aClickCount, aModifiers,
aIgnoreRootScrollFrame, 0, aInputSourceArg, false, 4, &defaultPrevented);
return defaultPrevented;
}
void
TabChild::MakeVisible()
{
if (mWidget) {
mWidget->Show(true);
}
}
void
TabChild::MakeHidden()
{
if (mWidget) {
mWidget->Show(false);
}
}
void
TabChild::UpdateHitRegion(const nsRegion& aRegion)
{
mRemoteFrame->SendUpdateHitRegion(aRegion);
}
NS_IMETHODIMP
TabChild::GetMessageManager(nsIContentFrameMessageManager** aResult)
{
if (mTabChildGlobal) {
NS_ADDREF(*aResult = mTabChildGlobal);
return NS_OK;
}
*aResult = nullptr;
return NS_ERROR_FAILURE;
}
void
TabChild::SendRequestFocus(bool aCanFocus)
{
PBrowserChild::SendRequestFocus(aCanFocus);
}
PIndexedDBChild*
TabChild::AllocPIndexedDBChild(
const nsCString& aGroup,
const nsCString& aASCIIOrigin, bool* /* aAllowed */)
{
NS_NOTREACHED("Should never get here!");
return nullptr;
}
bool
TabChild::DeallocPIndexedDBChild(PIndexedDBChild* aActor)
{
delete aActor;
return true;
}
bool
TabChild::DoSendBlockingMessage(JSContext* aCx,
const nsAString& aMessage,
const StructuredCloneData& aData,
JS::Handle<JSObject *> aCpows,
nsIPrincipal* aPrincipal,
InfallibleTArray<nsString>* aJSONRetVal,
bool aIsSync)
{
ClonedMessageData data;
if (!BuildClonedMessageDataForChild(Manager(), aData, data)) {
return false;
}
InfallibleTArray<CpowEntry> cpows;
if (sCpowsEnabled) {
if (!Manager()->GetCPOWManager()->Wrap(aCx, aCpows, &cpows)) {
return false;
}
}
if (aIsSync) {
return SendSyncMessage(PromiseFlatString(aMessage), data, cpows,
aPrincipal, aJSONRetVal);
}
return CallRpcMessage(PromiseFlatString(aMessage), data, cpows,
aPrincipal, aJSONRetVal);
}
bool
TabChild::DoSendAsyncMessage(JSContext* aCx,
const nsAString& aMessage,
const StructuredCloneData& aData,
JS::Handle<JSObject *> aCpows,
nsIPrincipal* aPrincipal)
{
ClonedMessageData data;
if (!BuildClonedMessageDataForChild(Manager(), aData, data)) {
return false;
}
InfallibleTArray<CpowEntry> cpows;
if (sCpowsEnabled) {
if (!Manager()->GetCPOWManager()->Wrap(aCx, aCpows, &cpows)) {
return false;
}
}
return SendAsyncMessage(PromiseFlatString(aMessage), data, cpows,
aPrincipal);
}
TabChild*
TabChild::GetFrom(nsIPresShell* aPresShell)
{
nsIDocument* doc = aPresShell->GetDocument();
if (!doc) {
return nullptr;
}
nsCOMPtr<nsIDocShell> docShell(doc->GetDocShell());
return GetFrom(docShell);
}
TabChild*
TabChild::GetFrom(uint64_t aLayersId)
{
if (!sTabChildren) {
return nullptr;
}
return sTabChildren->Get(aLayersId);
}
void
TabChild::DidComposite(uint64_t aTransactionId)
{
MOZ_ASSERT(mWidget);
MOZ_ASSERT(mWidget->GetLayerManager());
MOZ_ASSERT(mWidget->GetLayerManager()->GetBackendType() == LayersBackend::LAYERS_CLIENT);
ClientLayerManager *manager = static_cast<ClientLayerManager*>(mWidget->GetLayerManager());
manager->DidComposite(aTransactionId);
}
NS_IMETHODIMP
TabChild::OnShowTooltip(int32_t aXCoords, int32_t aYCoords, const char16_t *aTipText)
{
nsString str(aTipText);
SendShowTooltip(aXCoords, aYCoords, str);
return NS_OK;
}
NS_IMETHODIMP
TabChild::OnHideTooltip()
{
SendHideTooltip();
return NS_OK;
}
bool
TabChild::RecvUIResolutionChanged()
{
static_cast<PuppetWidget*>(mWidget.get())->ClearBackingScaleCache();
nsCOMPtr<nsIDocument> document(GetDocument());
nsCOMPtr<nsIPresShell> presShell = document->GetShell();
nsRefPtr<nsPresContext> presContext = presShell->GetPresContext();
presContext->UIResolutionChanged();
return true;
}
TabChildGlobal::TabChildGlobal(TabChildBase* aTabChild)
: mTabChild(aTabChild)
{
}
TabChildGlobal::~TabChildGlobal()
{
}
void
TabChildGlobal::Init()
{
NS_ASSERTION(!mMessageManager, "Re-initializing?!?");
mMessageManager = new nsFrameMessageManager(mTabChild,
nullptr,
MM_CHILD);
}
NS_IMPL_CYCLE_COLLECTION_INHERITED(TabChildGlobal, DOMEventTargetHelper,
mMessageManager, mTabChild)
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(nsIScriptObjectPrincipal)
NS_INTERFACE_MAP_ENTRY(nsIGlobalObject)
NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(ContentFrameMessageManager)
NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
NS_IMPL_ADDREF_INHERITED(TabChildGlobal, DOMEventTargetHelper)
NS_IMPL_RELEASE_INHERITED(TabChildGlobal, DOMEventTargetHelper)
/* [notxpcom] boolean markForCC (); */
// This method isn't automatically forwarded safely because it's notxpcom, so
// the IDL binding doesn't know what value to return.
NS_IMETHODIMP_(bool)
TabChildGlobal::MarkForCC()
{
return mMessageManager ? mMessageManager->MarkForCC() : false;
}
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()
{
return nsContentUtils::GetSafeJSContext();
}
nsIPrincipal*
TabChildGlobal::GetPrincipal()
{
if (!mTabChild)
return nullptr;
return mTabChild->GetPrincipal();
}
JSObject*
TabChildGlobal::GetGlobalJSObject()
{
NS_ENSURE_TRUE(mTabChild, nullptr);
nsCOMPtr<nsIXPConnectJSObjectHolder> ref = mTabChild->GetGlobal();
NS_ENSURE_TRUE(ref, nullptr);
return ref->GetJSObject();
}
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