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c82d0f2e6d
gecko/dom/ipc/TabChild.cpp
Kartikaya Gupta 55c123d4d6 Bug 885023 - Convert mFrameMetrics.mZoom to a CSSToScreenScale. r=BenWa,k17e 
The mFrameMetrics.mZoom was previously a "resolution-independent" zoom,
which meant it had to always be multiplied by the CalculateIntrinsicScale()
value to be useful. This patch converts it to a "resolution-dependent" zoom,
and includes the intrinsic scale multiplier already. This means it needs
to be updated if either the viewport or composition bounds (which determine
the intrinsic scale) change, but there are only a few places where this
happens and it makes the rest of the code cleaner.
2013-08-26 09:50:30 -04:00

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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/ipc/FileDescriptorUtils.h"
#include "mozilla/layers/AsyncPanZoomController.h"
#include "mozilla/layers/CompositorChild.h"
#include "mozilla/layers/ImageBridgeChild.h"
#include "mozilla/layers/PLayerTransactionChild.h"
#include "mozilla/layers/ShadowLayers.h"
#include "mozilla/layout/RenderFrameChild.h"
#include "mozilla/StaticPtr.h"
#include "mozilla/unused.h"
#include "mozIApplication.h"
#include "nsComponentManagerUtils.h"
#include "nsComponentManagerUtils.h"
#include "nsContentUtils.h"
#include "nsCxPusher.h"
#include "nsEmbedCID.h"
#include "nsEventListenerManager.h"
#include <algorithm>
#ifdef MOZ_CRASHREPORTER
#include "nsExceptionHandler.h"
#endif
#include "mozilla/dom/Element.h"
#include "nsIAppsService.h"
#include "nsIBaseWindow.h"
#include "nsICachedFileDescriptorListener.h"
#include "nsIComponentManager.h"
#include "nsIDocumentInlines.h"
#include "nsIDOMClassInfo.h"
#include "nsIDOMElement.h"
#include "nsIDOMEvent.h"
#include "nsIDOMWindow.h"
#include "nsIDOMWindowUtils.h"
#include "nsIDocShell.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIInterfaceRequestorUtils.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 "nsIURIFixup.h"
#include "nsCDefaultURIFixup.h"
#include "nsView.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 "nsGlobalWindow.h"
#include "nsLayoutUtils.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"
#include "nsViewportInfo.h"
#include "JavaScriptChild.h"
#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_ISUPPORTS1(ContentListener, nsIDOMEventListener)
static const CSSSize kDefaultViewportSize(980, 480);
static const char CANCEL_DEFAULT_PAN_ZOOM[] = "cancel-default-pan-zoom";
static const char BROWSER_ZOOM_TO_RECT[] = "browser-zoom-to-rect";
static const char BEFORE_FIRST_PAINT[] = "before-first-paint";
static const char DETECT_SCROLLABLE_SUBFRAME[] = "detect-scrollable-subframe";
static bool sCpowsEnabled = false;
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);
};
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*/ 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);
// Load, compile, and run these scripts.
tab->RecvLoadRemoteScript(
NS_LITERAL_STRING("chrome://global/content/preload.js"));
nsCOMPtr<nsIDocShell> docShell = do_GetInterface(tab->mWebNav);
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(ContentChild* 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(ContentChild* aManager, const TabContext& aContext, uint32_t aChromeFlags)
: TabContext(aContext)
, mRemoteFrame(nullptr)
, mManager(aManager)
, mTabChildGlobal(nullptr)
, mChromeFlags(aChromeFlags)
, mOuterRect(0, 0, 0, 0)
, mInnerSize(0, 0)
, mActivePointerId(-1)
, mTapHoldTimer(nullptr)
, mAppPackageFileDescriptorRecved(false)
, mOldViewportWidth(0.0f)
, mLastBackgroundColor(NS_RGB(255, 255, 255))
, mDidFakeShow(false)
, mNotified(false)
, mContentDocumentIsDisplayed(false)
, mTriedBrowserInit(false)
, mOrientation(eScreenOrientation_PortraitPrimary)
, mUpdateHitRegion(false)
{
}
// Get the DOMWindowUtils for the window corresponding to the given document.
static already_AddRefed<nsIDOMWindowUtils> GetDOMWindowUtils(nsIDocument* doc)
{
nsCOMPtr<nsIDOMWindowUtils> utils;
nsCOMPtr<nsIDOMWindow> window = doc->GetDefaultView();
if (window) {
utils = do_GetInterface(window);
}
return utils.forget();
}
// Get the DOMWindowUtils for the window corresponding to the givent content
// element. This might be an iframe inside the tab, for instance.
static already_AddRefed<nsIDOMWindowUtils> GetDOMWindowUtils(nsIContent* content)
{
nsCOMPtr<nsIDOMWindowUtils> utils;
nsIDocument* doc = content->GetCurrentDoc();
if (doc) {
utils = GetDOMWindowUtils(doc);
}
return utils.forget();
}
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();
} else if (eventType.EqualsLiteral("scroll")) {
nsCOMPtr<nsIDOMEventTarget> target;
aEvent->GetTarget(getter_AddRefs(target));
ViewID viewId;
uint32_t presShellId;
nsIScrollableFrame* scrollFrame = nullptr;
nsCOMPtr<nsIContent> content;
if (nsCOMPtr<nsIDocument> doc = do_QueryInterface(target))
content = doc->GetDocumentElement();
else
content = do_QueryInterface(target);
nsCOMPtr<nsIDOMWindowUtils> utils = ::GetDOMWindowUtils(content);
utils->GetPresShellId(&presShellId);
if (!nsLayoutUtils::FindIDFor(content, &viewId))
return NS_ERROR_UNEXPECTED;
scrollFrame = nsLayoutUtils::FindScrollableFrameFor(viewId);
if (scrollFrame) {
CSSIntPoint scrollOffset = scrollFrame->GetScrollPositionCSSPixels();
// For the root frame, we store the last metrics, including the last
// scroll offset, sent by APZC. (This is updated in ProcessUpdateFrame()).
// We use this here to avoid sending APZC back a scroll event that
// originally came from APZC (besides being unnecessary, the event might
// be slightly out of date by the time it reaches APZC).
// We should probably do this for subframes, too.
if (viewId == FrameMetrics::ROOT_SCROLL_ID) {
if (RoundedToInt(mLastMetrics.mScrollOffset) == scrollOffset)
return NS_OK;
else
// Update the last scroll offset now, otherwise RecvUpdateDimensions()
// might trigger a scroll to the old offset before RecvUpdateFrame()
// gets a chance to update it.
mLastMetrics.mScrollOffset = scrollOffset;
}
SendUpdateScrollOffset(presShellId, viewId, scrollOffset);
}
}
return NS_OK;
}
NS_IMETHODIMP
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) {
CSSRect rect;
sscanf(NS_ConvertUTF16toUTF8(aData).get(),
"{\"x\":%f,\"y\":%f,\"w\":%f,\"h\":%f}",
&rect.x, &rect.y, &rect.width, &rect.height);
SendZoomToRect(rect);
}
} else if (!strcmp(aTopic, BEFORE_FIRST_PAINT)) {
if (IsAsyncPanZoomEnabled()) {
nsCOMPtr<nsIDocument> subject(do_QueryInterface(aSubject));
nsCOMPtr<nsIDOMDocument> domDoc;
mWebNav->GetDocument(getter_AddRefs(domDoc));
nsCOMPtr<nsIDocument> doc(do_QueryInterface(domDoc));
if (SameCOMIdentity(subject, doc)) {
nsCOMPtr<nsIDOMWindowUtils> utils(GetDOMWindowUtils());
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);
// 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.
mLastMetrics.mViewport = CSSRect(CSSPoint(), kDefaultViewportSize);
mLastMetrics.mCompositionBounds = ScreenIntRect(ScreenIntPoint(), mInnerSize);
mLastMetrics.mZoom = mLastMetrics.CalculateIntrinsicScale();
// We use ScreenToLayerScale(1) below in order to turn the
// async zoom amount into the gecko zoom amount.
mLastMetrics.mResolution =
mLastMetrics.mZoom / mLastMetrics.mDevPixelsPerCSSPixel * ScreenToLayerScale(1);
mLastMetrics.mScrollOffset = CSSPoint(0, 0);
utils->SetResolution(mLastMetrics.mResolution.scale,
mLastMetrics.mResolution.scale);
HandlePossibleViewportChange();
}
}
} else if (!strcmp(aTopic, DETECT_SCROLLABLE_SUBFRAME)) {
nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(aSubject));
nsCOMPtr<nsITabChild> tabChild(GetTabChildFrom(docShell));
if (tabChild == this) {
mRemoteFrame->DetectScrollableSubframe();
}
}
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<nsIDOMWindowUtils> utils(do_GetInterface(window));
utils->SetIsFirstPaint(true);
nsCOMPtr<nsIDOMDocument> progressDoc;
window->GetDocument(getter_AddRefs(progressDoc));
if (!progressDoc) {
return NS_OK;
}
nsCOMPtr<nsIDOMDocument> domDoc;
mWebNav->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 PRUnichar* 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;
}
void
TabChild::SetCSSViewport(const CSSSize& aSize)
{
mOldViewportWidth = aSize.width;
if (mContentDocumentIsDisplayed) {
nsCOMPtr<nsIDOMWindowUtils> utils(GetDOMWindowUtils());
utils->SetCSSViewport(aSize.width, aSize.height);
}
}
void
TabChild::HandlePossibleViewportChange()
{
if (!IsAsyncPanZoomEnabled()) {
return;
}
nsCOMPtr<nsIDOMDocument> domDoc;
mWebNav->GetDocument(getter_AddRefs(domDoc));
nsCOMPtr<nsIDocument> document(do_QueryInterface(domDoc));
nsCOMPtr<nsIDOMWindowUtils> utils(GetDOMWindowUtils());
nsViewportInfo viewportInfo =
nsContentUtils::GetViewportInfo(document, mInnerSize.width, mInnerSize.height);
SendUpdateZoomConstraints(viewportInfo.IsZoomAllowed(),
CSSToScreenScale(viewportInfo.GetMinZoom()),
CSSToScreenScale(viewportInfo.GetMaxZoom()));
float screenW = mInnerSize.width;
float screenH = mInnerSize.height;
CSSSize viewport(viewportInfo.GetWidth(), viewportInfo.GetHeight());
// We're not being displayed in any way; don't bother doing anything because
// that will just confuse future adjustments.
if (!screenW || !screenH) {
return;
}
// Make sure the viewport height is not shorter than the window when the page
// is zoomed out to show its full width. Note that before we set the viewport
// width, the "full width" of the page isn't properly defined, so that's why
// we have to call SetCSSViewport twice - once to set the width, and the
// second time to figure out the height based on the layout at that width.
float oldBrowserWidth = mOldViewportWidth;
mLastMetrics.mViewport.SizeTo(viewport);
if (!oldBrowserWidth) {
oldBrowserWidth = kDefaultViewportSize.width;
}
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;
}
float minScale = 1.0f;
nsCOMPtr<Element> htmlDOMElement = document->GetHtmlElement();
HTMLBodyElement* bodyDOMElement = document->GetBodyElement();
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();
}
CSSSize pageSize;
if (htmlDOMElement || bodyDOMElement) {
pageSize = CSSSize(std::max(htmlWidth, bodyWidth),
std::max(htmlHeight, bodyHeight));
} else {
// For non-HTML content (e.g. SVG), just assume page size == viewport size.
pageSize = viewport;
}
if (!pageSize.width) {
// Return early rather than divide by 0.
return;
}
minScale = mInnerSize.width / pageSize.width;
minScale = clamped((double)minScale, viewportInfo.GetMinZoom(),
viewportInfo.GetMaxZoom());
NS_ENSURE_TRUE_VOID(minScale); // (return early rather than divide by 0)
viewport.height = std::max(viewport.height, screenH / minScale);
SetCSSViewport(viewport);
float oldScreenWidth = mLastMetrics.mCompositionBounds.width;
if (!oldScreenWidth) {
oldScreenWidth = mInnerSize.width;
}
FrameMetrics metrics(mLastMetrics);
metrics.mViewport = CSSRect(CSSPoint(), viewport);
metrics.mScrollableRect = CSSRect(CSSPoint(), pageSize);
metrics.mCompositionBounds = ScreenIntRect(ScreenIntPoint(), mInnerSize);
// 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 = oldScreenWidth / oldBrowserWidth;
metrics.mZoom.scale *= 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);
MOZ_ASSERT(NS_SUCCEEDED(rv));
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() < 0.01f) {
viewportInfo.SetDefaultZoom(metrics.CalculateIntrinsicScale().scale);
}
double defaultZoom = viewportInfo.GetDefaultZoom();
MOZ_ASSERT(viewportInfo.GetMinZoom() <= defaultZoom &&
defaultZoom <= viewportInfo.GetMaxZoom());
metrics.mZoom = CSSToScreenScale(defaultZoom);
}
metrics.mDisplayPort = 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, gfx::Point(0.0f, 0.0f), gfx::Point(0.0f, 0.0f), 0.0);
metrics.mResolution = metrics.mZoom / metrics.mDevPixelsPerCSSPixel * ScreenToLayerScale(1);
utils->SetResolution(metrics.mResolution.scale, metrics.mResolution.scale);
// Force a repaint with these metrics. This, among other things, sets the
// displayport, so we start with async painting.
ProcessUpdateFrame(metrics);
}
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 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(mWebNav);
MOZ_ASSERT(docShell);
docShell->SetAffectPrivateSessionLifetime(
mChromeFlags & nsIWebBrowserChrome::CHROME_PRIVATE_LIFETIME);
nsCOMPtr<nsILoadContext> loadContext = do_GetInterface(mWebNav);
MOZ_ASSERT(loadContext);
loadContext->SetPrivateBrowsing(
mChromeFlags & nsIWebBrowserChrome::CHROME_PRIVATE_WINDOW);
nsCOMPtr<nsIWebProgress> webProgress = do_GetInterface(docShell);
NS_ENSURE_TRUE(webProgress, NS_ERROR_FAILURE);
webProgress->AddProgressListener(this, nsIWebProgress::NOTIFY_LOCATION);
return NS_OK;
}
void
TabChild::NotifyTabContextUpdated()
{
nsCOMPtr<nsIDocShell> docShell = do_GetInterface(mWebNav);
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(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(nsIDOMEventListener)
NS_INTERFACE_MAP_ENTRY(nsIWebProgressListener)
NS_INTERFACE_MAP_ENTRY(nsITabChild)
NS_INTERFACE_MAP_ENTRY(nsIDialogCreator)
NS_INTERFACE_MAP_ENTRY(nsIObserver)
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)
{
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::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)
{
// 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_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)
{
// 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_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> 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);
}
// 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;
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();
unused << Manager()->SendPBrowserConstructor(
// We release this ref in DeallocPBrowserChild
nsRefPtr<TabChild>(newChild).forget().get(),
IPCTabContext(context, mScrolling), /* chromeFlags */ 0);
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->mWebNav);
win.forget(aReturn);
return NS_OK;
}
already_AddRefed<nsIDOMWindowUtils>
TabChild::GetDOMWindowUtils()
{
nsCOMPtr<nsPIDOMWindow> window = do_GetInterface(mWebNav);
nsCOMPtr<nsIDOMWindowUtils> utils = do_GetInterface(window);
return utils.forget();
}
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);
}
mGlobal = nullptr;
if (mTabChildGlobal) {
nsEventListenerManager* elm = mTabChildGlobal->GetListenerManager(false);
if (elm) {
elm->Disconnect();
}
mTabChildGlobal->mTabChild = 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);
}
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 = mWebNav->LoadURI(NS_ConvertUTF8toUTF16(uri).get(),
nsIWebNavigation::LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP |
nsIWebNavigation::LOAD_FLAGS_DISALLOW_INHERIT_OWNER,
NULL, NULL, NULL);
if (NS_FAILED(rv)) {
NS_WARNING("mWebNav->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);
uint32_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);
uint32_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);
uint32_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);
// 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(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, const ScreenOrientation& orientation)
{
if (!mRemoteFrame) {
return true;
}
mOuterRect.x = rect.x;
mOuterRect.y = rect.y;
mOuterRect.width = rect.width;
mOuterRect.height = rect.height;
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(mWebNav);
baseWin->SetPositionAndSize(0, 0, size.width, size.height,
true);
HandlePossibleViewportChange();
return true;
}
void
TabChild::DispatchMessageManagerMessage(const nsAString& aMessageName,
const nsACString& aJSONData)
{
AutoSafeJSContext cx;
JS::Rooted<JS::Value> json(cx, JSVAL_NULL);
StructuredCloneData cloneData;
JSAutoStructuredCloneBuffer buffer;
if (JS_ParseJSON(cx,
static_cast<const jschar*>(NS_ConvertUTF8toUTF16(aJSONData).get()),
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);
}
bool
TabChild::RecvUpdateFrame(const FrameMetrics& aFrameMetrics)
{
MOZ_ASSERT(aFrameMetrics.mScrollId != FrameMetrics::NULL_SCROLL_ID);
if (aFrameMetrics.mScrollId == FrameMetrics::ROOT_SCROLL_ID) {
uint32_t presShellId;
nsCOMPtr<nsIDOMWindowUtils> utils(GetDOMWindowUtils());
nsresult rv = utils->GetPresShellId(&presShellId);
MOZ_ASSERT(NS_SUCCEEDED(rv));
if (NS_SUCCEEDED(rv) && aFrameMetrics.mPresShellId == presShellId) {
return ProcessUpdateFrame(aFrameMetrics);
}
} else {
// aFrameMetrics.mScrollId is not FrameMetrics::ROOT_SCROLL_ID,
// so we are trying to update a subframe. This requires special handling.
nsCOMPtr<nsIContent> content = nsLayoutUtils::FindContentFor(
aFrameMetrics.mScrollId);
if (content) {
return ProcessUpdateSubframe(content, aFrameMetrics);
}
}
// 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.
return ProcessUpdateFrame(mLastMetrics);
}
bool
TabChild::ProcessUpdateFrame(const FrameMetrics& aFrameMetrics)
{
if (!mGlobal || !mTabChildGlobal) {
return true;
}
CSSRect cssCompositedRect = aFrameMetrics.CalculateCompositedRectInCssPixels();
// The BrowserElementScrolling helper must know about these updated metrics
// for other functions it performs, such as double tap handling.
nsCString data;
data += nsPrintfCString("{ \"x\" : %d", NS_lround(aFrameMetrics.mScrollOffset.x));
data += nsPrintfCString(", \"y\" : %d", NS_lround(aFrameMetrics.mScrollOffset.y));
data += nsPrintfCString(", \"viewport\" : ");
data += nsPrintfCString("{ \"width\" : %f", aFrameMetrics.mViewport.width);
data += nsPrintfCString(", \"height\" : %f", aFrameMetrics.mViewport.height);
data += nsPrintfCString(" }");
data += nsPrintfCString(", \"displayPort\" : ");
data += nsPrintfCString("{ \"x\" : %f", aFrameMetrics.mDisplayPort.x);
data += nsPrintfCString(", \"y\" : %f", aFrameMetrics.mDisplayPort.y);
data += nsPrintfCString(", \"width\" : %f", aFrameMetrics.mDisplayPort.width);
data += nsPrintfCString(", \"height\" : %f", aFrameMetrics.mDisplayPort.height);
data += nsPrintfCString(" }");
data += nsPrintfCString(", \"compositionBounds\" : ");
data += nsPrintfCString("{ \"x\" : %d", aFrameMetrics.mCompositionBounds.x);
data += nsPrintfCString(", \"y\" : %d", aFrameMetrics.mCompositionBounds.y);
data += nsPrintfCString(", \"width\" : %d", aFrameMetrics.mCompositionBounds.width);
data += nsPrintfCString(", \"height\" : %d", aFrameMetrics.mCompositionBounds.height);
data += nsPrintfCString(" }");
data += nsPrintfCString(", \"cssPageRect\" : ");
data += nsPrintfCString("{ \"x\" : %f", aFrameMetrics.mScrollableRect.x);
data += nsPrintfCString(", \"y\" : %f", aFrameMetrics.mScrollableRect.y);
data += nsPrintfCString(", \"width\" : %f", aFrameMetrics.mScrollableRect.width);
data += nsPrintfCString(", \"height\" : %f", aFrameMetrics.mScrollableRect.height);
data += nsPrintfCString(" }");
data += nsPrintfCString(", \"cssCompositedRect\" : ");
data += nsPrintfCString("{ \"width\" : %f", cssCompositedRect.width);
data += nsPrintfCString(", \"height\" : %f", cssCompositedRect.height);
data += nsPrintfCString(" }");
data += nsPrintfCString(" }");
DispatchMessageManagerMessage(NS_LITERAL_STRING("Viewport:Change"), data);
nsCOMPtr<nsIDOMWindowUtils> utils(GetDOMWindowUtils());
nsCOMPtr<nsIDOMWindow> window = do_GetInterface(mWebNav);
// set the scroll port size, which determines the scroll range
utils->SetScrollPositionClampingScrollPortSize(
cssCompositedRect.width, cssCompositedRect.height);
// scroll the window to the desired spot
nsIScrollableFrame* sf = static_cast<nsGlobalWindow*>(window.get())->GetScrollFrame();
if (sf) {
sf->ScrollToCSSPixelsApproximate(aFrameMetrics.mScrollOffset);
}
// set the resolution
LayoutDeviceToLayerScale resolution = aFrameMetrics.mZoom
/ aFrameMetrics.mDevPixelsPerCSSPixel * ScreenToLayerScale(1);
utils->SetResolution(resolution.scale, resolution.scale);
// and set the display port
nsCOMPtr<nsIDOMDocument> domDoc;
mWebNav->GetDocument(getter_AddRefs(domDoc));
if (domDoc) {
nsCOMPtr<nsIDOMElement> element;
domDoc->GetDocumentElement(getter_AddRefs(element));
if (element) {
utils->SetDisplayPortForElement(
aFrameMetrics.mDisplayPort.x, aFrameMetrics.mDisplayPort.y,
aFrameMetrics.mDisplayPort.width, aFrameMetrics.mDisplayPort.height,
element);
}
}
mLastMetrics = aFrameMetrics;
// ScrollWindowTo() can make some small adjustments to the offset before
// actually scrolling the window. To ensure that the scroll offset stored
// in mLastMetrics is the same as the offset stored in the window,
// re-query the latter.
CSSIntPoint actualScrollOffset;
utils->GetScrollXY(false, &actualScrollOffset.x, &actualScrollOffset.y);
mLastMetrics.mScrollOffset = actualScrollOffset;
return true;
}
bool
TabChild::ProcessUpdateSubframe(nsIContent* aContent,
const FrameMetrics& aMetrics)
{
// scroll the frame to the desired spot
nsIScrollableFrame* scrollFrame = nsLayoutUtils::FindScrollableFrameFor(aMetrics.mScrollId);
if (scrollFrame) {
scrollFrame->ScrollToCSSPixelsApproximate(aMetrics.mScrollOffset);
}
nsCOMPtr<nsIDOMWindowUtils> utils(::GetDOMWindowUtils(aContent));
nsCOMPtr<nsIDOMElement> element = do_QueryInterface(aContent);
if (utils && element) {
// and set the display port
utils->SetDisplayPortForElement(
aMetrics.mDisplayPort.x, aMetrics.mDisplayPort.y,
aMetrics.mDisplayPort.width, aMetrics.mDisplayPort.height,
element);
}
return true;
}
bool
TabChild::RecvHandleDoubleTap(const CSSIntPoint& aPoint)
{
if (!mGlobal || !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::RecvHandleSingleTap(const CSSIntPoint& aPoint)
{
if (!mGlobal || !mTabChildGlobal) {
return true;
}
RecvMouseEvent(NS_LITERAL_STRING("mousemove"), aPoint.x, aPoint.y, 0, 1, 0, false);
RecvMouseEvent(NS_LITERAL_STRING("mousedown"), aPoint.x, aPoint.y, 0, 1, 0, false);
RecvMouseEvent(NS_LITERAL_STRING("mouseup"), aPoint.x, aPoint.y, 0, 1, 0, false);
return true;
}
bool
TabChild::RecvHandleLongTap(const CSSIntPoint& aPoint)
{
if (!mGlobal || !mTabChildGlobal) {
return true;
}
RecvMouseEvent(NS_LITERAL_STRING("contextmenu"), aPoint.x, aPoint.y,
2 /* Right button */,
1 /* Click count */,
0 /* Modifiers */,
false /* Ignore root scroll frame */);
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)
{
DispatchMouseEvent(aType, CSSPoint(aX, aY), aButton, aClickCount, aModifiers,
aIgnoreRootScrollFrame);
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;
}
void
TabChild::DispatchSynthesizedMouseEvent(uint32_t aMsg, uint64_t aTime,
const LayoutDevicePoint& aRefPoint)
{
MOZ_ASSERT(aMsg == NS_MOUSE_MOVE || aMsg == NS_MOUSE_BUTTON_DOWN ||
aMsg == NS_MOUSE_BUTTON_UP);
nsMouseEvent event(true, aMsg, NULL,
nsMouseEvent::eReal, nsMouseEvent::eNormal);
event.refPoint = LayoutDeviceIntPoint(aRefPoint.x, aRefPoint.y);
event.time = aTime;
event.button = nsMouseEvent::eLeftButton;
event.inputSource = nsIDOMMouseEvent::MOZ_SOURCE_TOUCH;
if (aMsg != NS_MOUSE_MOVE) {
event.clickCount = 1;
}
DispatchWidgetEvent(event);
}
static Touch*
GetTouchForIdentifier(const nsTouchEvent& 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 nsTouchEvent& 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);
}
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) {
return;
}
Touch* touch = static_cast<Touch*>(aEvent.touches[0].get());
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);
DispatchSynthesizedMouseEvent(NS_MOUSE_BUTTON_DOWN, time, currentPoint);
DispatchSynthesizedMouseEvent(NS_MOUSE_BUTTON_UP, time, currentPoint);
}
// 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 */);
// 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 nsTouchEvent& aEvent)
{
nsTouchEvent localEvent(aEvent);
nsEventStatus status = DispatchWidgetEvent(localEvent);
if (IsAsyncPanZoomEnabled()) {
nsCOMPtr<nsPIDOMWindow> outerWindow = do_GetInterface(mWebNav);
nsCOMPtr<nsPIDOMWindow> innerWindow = outerWindow->GetCurrentInnerWindow();
if (innerWindow && innerWindow->HasTouchEventListeners()) {
SendContentReceivedTouch(nsIPresShell::gPreventMouseEvents);
}
} else {
UpdateTapState(aEvent, status);
}
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<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 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::AllocPDocumentRendererChild(const nsRect& documentRect,
const gfxMatrix& 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 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::AllocPContentDialogChild(const uint32_t&,
const nsCString&,
const nsCString&,
const InfallibleTArray<int>&,
const InfallibleTArray<nsString>&)
{
return new ContentDialogChild();
}
bool
TabChild::DeallocPContentDialogChild(PContentDialogChild* aDialog)
{
delete aDialog;
return true;
}
PContentPermissionRequestChild*
TabChild::AllocPContentPermissionRequestChild(const nsCString& aType, const nsCString& aAccess, const IPC::Principal&)
{
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;
}
bool
TabChild::RecvActivateFrameEvent(const nsString& aType, const bool& capture)
{
nsCOMPtr<nsPIDOMWindow> window = do_GetInterface(mWebNav);
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);
delete offlineCacheUpdate;
return true;
}
bool
TabChild::RecvLoadRemoteScript(const nsString& aURL)
{
if (!mGlobal && !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,
const InfallibleTArray<CpowEntry>& aCpows)
{
if (mTabChildGlobal) {
nsCOMPtr<nsIXPConnectJSObjectHolder> kungFuDeathGrip(GetGlobal());
StructuredCloneData cloneData = UnpackClonedMessageDataForChild(aData);
nsRefPtr<nsFrameMessageManager> mm =
static_cast<nsFrameMessageManager*>(mTabChildGlobal->mMessageManager.get());
CpowIdHolder cpows(static_cast<ContentChild*>(Manager())->GetCPOWManager(), aCpows);
mm->ReceiveMessage(static_cast<EventTarget*>(mTabChildGlobal),
aMessage, false, &cloneData, &cpows, 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 =
do_GetService(NS_OBSERVERSERVICE_CONTRACTID);
observerService->RemoveObserver(this, CANCEL_DEFAULT_PAN_ZOOM);
observerService->RemoveObserver(this, BROWSER_ZOOM_TO_RECT);
observerService->RemoveObserver(this, BEFORE_FIRST_PAINT);
observerService->RemoveObserver(this, DETECT_SCROLLABLE_SUBFRAME);
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;
}
PRenderFrameChild*
TabChild::AllocPRenderFrameChild(ScrollingBehavior* aScrolling,
TextureFactoryIdentifier* aTextureFactoryIdentifier,
uint64_t* aLayersId)
{
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(mWebNav);
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);
chromeHandler->AddEventListener(NS_LITERAL_STRING("scroll"), 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);
}
}
return true;
}
bool
TabChild::InitRenderingState()
{
static_cast<PuppetWidget*>(mWidget.get())->InitIMEState();
uint64_t id;
RenderFrameChild* remoteFrame =
static_cast<RenderFrameChild*>(SendPRenderFrameConstructor(
&mScrolling, &mTextureFactoryIdentifier, &id));
if (!remoteFrame) {
NS_WARNING("failed to construct RenderFrame");
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;
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);
observerService->AddObserver(this,
BEFORE_FIRST_PAINT,
false);
observerService->AddObserver(this,
DETECT_SCROLLABLE_SUBFRAME,
false);
}
// This state can't really change during the lifetime of the child.
sCpowsEnabled = Preferences::GetBool("browser.tabs.remote", false);
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()
{
// Normally we only need to notify the content process once, but with BasicCompositor
// we need to notify content every change so that it can compute an invalidation
// region and send that to the widget.
if (UseDirectCompositor() &&
(!mNotified || mTextureFactoryIdentifier.mParentBackend == LAYERS_BASIC)) {
mRemoteFrame->SendNotifyCompositorTransaction();
mNotified = true;
}
}
bool
TabChild::IsAsyncPanZoomEnabled()
{
return mScrolling == ASYNC_PAN_ZOOM;
}
bool
TabChild::DispatchMouseEvent(const nsString& aType,
const CSSPoint& aPoint,
const int32_t& aButton,
const int32_t& aClickCount,
const int32_t& aModifiers,
const bool& aIgnoreRootScrollFrame)
{
nsCOMPtr<nsIDOMWindowUtils> utils(GetDOMWindowUtils());
NS_ENSURE_TRUE(utils, true);
bool defaultPrevented = false;
utils->SendMouseEvent(aType, aPoint.x, aPoint.y, aButton, aClickCount, aModifiers,
aIgnoreRootScrollFrame, 0, 0, &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;
}
PIndexedDBChild*
TabChild::AllocPIndexedDBChild(const nsCString& aASCIIOrigin, bool* /* aAllowed */)
{
NS_NOTREACHED("Should never get here!");
return NULL;
}
bool
TabChild::DeallocPIndexedDBChild(PIndexedDBChild* aActor)
{
delete aActor;
return true;
}
bool
TabChild::DoSendSyncMessage(JSContext* aCx,
const nsAString& aMessage,
const StructuredCloneData& aData,
JS::Handle<JSObject *> aCpows,
InfallibleTArray<nsString>* aJSONRetVal)
{
ContentChild* cc = Manager();
ClonedMessageData data;
if (!BuildClonedMessageDataForChild(cc, aData, data)) {
return false;
}
InfallibleTArray<CpowEntry> cpows;
if (sCpowsEnabled) {
if (!cc->GetCPOWManager()->Wrap(aCx, aCpows, &cpows)) {
return false;
}
}
return SendSyncMessage(nsString(aMessage), data, cpows, aJSONRetVal);
}
bool
TabChild::DoSendAsyncMessage(JSContext* aCx,
const nsAString& aMessage,
const StructuredCloneData& aData,
JS::Handle<JSObject *> aCpows)
{
ContentChild* cc = Manager();
ClonedMessageData data;
if (!BuildClonedMessageDataForChild(cc, aData, data)) {
return false;
}
InfallibleTArray<CpowEntry> cpows;
if (sCpowsEnabled) {
if (!cc->GetCPOWManager()->Wrap(aCx, aCpows, &cpows)) {
return false;
}
}
return SendAsyncMessage(nsString(aMessage), data, cpows);
}
TabChildGlobal::TabChildGlobal(TabChild* aTabChild)
: mTabChild(aTabChild)
{
}
void
TabChildGlobal::Init()
{
NS_ASSERTION(!mMessageManager, "Re-initializing?!?");
mMessageManager = new nsFrameMessageManager(mTabChild,
nullptr,
MM_CHILD);
}
NS_IMPL_CYCLE_COLLECTION_INHERITED_1(TabChildGlobal, nsDOMEventTargetHelper,
mMessageManager)
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_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(ContentFrameMessageManager)
NS_INTERFACE_MAP_END_INHERITING(nsDOMEventTargetHelper)
NS_IMPL_ADDREF_INHERITED(TabChildGlobal, nsDOMEventTargetHelper)
NS_IMPL_RELEASE_INHERITED(TabChildGlobal, nsDOMEventTargetHelper)
/* [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();
}
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