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Bug 1127189 - part 2 - Initialize browser API directly to get rid of nsBrowserElement observers. r=kanru

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--HG--
extra : rebase_source : 84f091ace43aebdb1c71e3060aa5a8220561977d
This commit is contained in:
Ting-Yu Chou 2015-02-09 15:04:18 +08:00
parent 93d58b32bd
commit 7d7f2fce93
6 changed files with 31 additions and 121 deletions
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30
dom/base/nsFrameLoader.cpp
View File

@ -170,14 +170,12 @@ nsFrameLoader::nsFrameLoader(Element* aOwner, bool aNetworkCreated)
, mRemoteFrame(false)
, mClipSubdocument(true)
, mClampScrollPosition(true)
, mRemoteBrowserInitialized(false)
, mObservingOwnerContent(false)
, mVisible(true)
, mCurrentRemoteFrame(nullptr)
, mRemoteBrowser(nullptr)
, mChildID(0)
, mEventMode(EVENT_MODE_NORMAL_DISPATCH)
, mPendingFrameSent(false)
{
ResetPermissionManagerStatus();
}
@ -365,15 +363,6 @@ nsFrameLoader::ReallyStartLoadingInternal()
if (mRemoteFrame) {
if (!mRemoteBrowser) {
if (!mPendingFrameSent) {
nsCOMPtr<nsIObserverService> os = services::GetObserverService();
if (os && !mRemoteBrowserInitialized) {
os->NotifyObservers(NS_ISUPPORTS_CAST(nsIFrameLoader*, this),
"remote-browser-pending", nullptr);
mPendingFrameSent = true;
}
}
TryRemoteBrowser();
if (!mRemoteBrowser) {
@ -916,16 +905,11 @@ nsFrameLoader::ShowRemoteFrame(const nsIntSize& size,
EnsureMessageManager();
InitializeBrowserAPI();
nsCOMPtr<nsIObserverService> os = services::GetObserverService();
if (os && !mRemoteBrowserInitialized) {
if (!mPendingFrameSent) {
os->NotifyObservers(NS_ISUPPORTS_CAST(nsIFrameLoader*, this),
"remote-browser-pending", nullptr);
mPendingFrameSent = true;
}
if (os) {
os->NotifyObservers(NS_ISUPPORTS_CAST(nsIFrameLoader*, this),
"remote-browser-shown", nullptr);
mRemoteBrowserInitialized = true;
}
} else {
nsIntRect dimensions;
@ -1794,6 +1778,7 @@ nsFrameLoader::MaybeCreateDocShell()
mDocShell->SetIsBrowserInsideApp(containingAppId);
}
InitializeBrowserAPI();
nsCOMPtr<nsIObserverService> os = services::GetObserverService();
if (os) {
os->NotifyObservers(NS_ISUPPORTS_CAST(nsIFrameLoader*, this),
@ -2758,3 +2743,12 @@ nsFrameLoader::GetLoadContext(nsILoadContext** aLoadContext)
loadContext.forget(aLoadContext);
return NS_OK;
}
void
nsFrameLoader::InitializeBrowserAPI()
{
nsCOMPtr<nsIMozBrowserFrame> browserFrame = do_QueryInterface(mOwnerContent);
if (browserFrame) {
browserFrame->InitializeBrowserAPI();
}
}

6
dom/base/nsFrameLoader.h
View File

@ -312,6 +312,8 @@ private:
// own-or-containing-app.
void ResetPermissionManagerStatus();
void InitializeBrowserAPI();
nsCOMPtr<nsIDocShell> mDocShell;
nsCOMPtr<nsIURI> mURIToLoad;
mozilla::dom::Element* mOwnerContent; // WEAK
@ -351,7 +353,6 @@ private:
bool mRemoteFrame : 1;
bool mClipSubdocument : 1;
bool mClampScrollPosition : 1;
bool mRemoteBrowserInitialized : 1;
bool mObservingOwnerContent : 1;
// Backs nsIFrameLoader::{Get,Set}Visible. Visibility state here relates to
@ -369,9 +370,6 @@ private:
// See nsIFrameLoader.idl. EVENT_MODE_NORMAL_DISPATCH automatically
// forwards some input events to out-of-process content.
uint32_t mEventMode;
// Indicate if we have sent 'remote-browser-pending'.
bool mPendingFrameSent;
};
#endif

91
dom/html/nsBrowserElement.cpp
View File

@ -19,91 +19,12 @@
#include "nsIDOMDOMRequest.h"
#include "nsIDOMElement.h"
#include "nsINode.h"
#include "nsIObserver.h"
#include "nsIObserverService.h"
#include "nsIPrincipal.h"
#include "nsWeakReference.h"
using namespace mozilla::dom;
namespace mozilla {
static const char kRemoteBrowserPending[] = "remote-browser-pending";
static const char kInprocessBrowserShown[] = "inprocess-browser-shown";
class nsBrowserElement::BrowserShownObserver : public nsIObserver
, public nsSupportsWeakReference
{
public:
explicit BrowserShownObserver(nsBrowserElement* aBrowserElement);
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
void AddObserver();
void RemoveObserver();
private:
virtual ~BrowserShownObserver();
// Weak reference to the browser element. nsBrowserElement has a
// reference to us. nsBrowserElement's destructor is responsible to
// null out this weak reference via RemoveObserver()
nsBrowserElement* mBrowserElement;
};
NS_IMPL_ISUPPORTS(nsBrowserElement::BrowserShownObserver, nsIObserver, nsISupportsWeakReference)
nsBrowserElement::BrowserShownObserver::BrowserShownObserver(nsBrowserElement* aBrowserElement)
: mBrowserElement(aBrowserElement)
{
}
nsBrowserElement::BrowserShownObserver::~BrowserShownObserver()
{
RemoveObserver();
}
NS_IMETHODIMP
nsBrowserElement::BrowserShownObserver::Observe(nsISupports* aSubject,
const char* aTopic,
const char16_t* aData)
{
NS_ENSURE_TRUE(mBrowserElement, NS_OK);
if (!strcmp(aTopic, kRemoteBrowserPending) ||
!strcmp(aTopic, kInprocessBrowserShown)) {
nsCOMPtr<nsIFrameLoader> frameLoader = do_QueryInterface(aSubject);
nsCOMPtr<nsIFrameLoader> myFrameLoader = mBrowserElement->GetFrameLoader();
// The browser element API needs the frameloader to
// initialize. We still use the observer to get notified when the
// frameloader is created. So we check if the frameloader created
// is ours, then initialize the browser element API.
if (frameLoader && frameLoader == myFrameLoader) {
mBrowserElement->InitBrowserElementAPI();
}
}
return NS_OK;
}
void
nsBrowserElement::BrowserShownObserver::AddObserver()
{
nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
if (obs) {
obs->AddObserver(this, kRemoteBrowserPending, true);
obs->AddObserver(this, kInprocessBrowserShown, true);
}
}
void
nsBrowserElement::BrowserShownObserver::RemoveObserver()
{
nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
if (obs) {
obs->RemoveObserver(this, kRemoteBrowserPending);
obs->RemoveObserver(this, kInprocessBrowserShown);
}
mBrowserElement = nullptr;
}
bool
nsBrowserElement::IsBrowserElementOrThrow(ErrorResult& aRv)
{
@ -145,18 +66,6 @@ nsBrowserElement::InitBrowserElementAPI()
}
}
nsBrowserElement::nsBrowserElement()
: mOwnerIsWidget(false)
{
mObserver = new BrowserShownObserver(this);
mObserver->AddObserver();
}
nsBrowserElement::~nsBrowserElement()
{
mObserver->RemoveObserver();
}
void
nsBrowserElement::SetVisible(bool aVisible, ErrorResult& aRv)
{

11
dom/html/nsBrowserElement.h
View File

@ -13,7 +13,6 @@
#include "nsIBrowserElementAPI.h"
class nsFrameLoader;
class nsIObserver;
namespace mozilla {
@ -31,8 +30,8 @@ class ErrorResult;
class nsBrowserElement
{
public:
nsBrowserElement();
virtual ~nsBrowserElement();
nsBrowserElement() : mOwnerIsWidget(false) {}
virtual ~nsBrowserElement() {}
void SetVisible(bool aVisible, ErrorResult& aRv);
already_AddRefed<dom::DOMRequest> GetVisible(ErrorResult& aRv);
@ -94,17 +93,13 @@ public:
protected:
NS_IMETHOD_(already_AddRefed<nsFrameLoader>) GetFrameLoader() = 0;
void InitBrowserElementAPI();
nsCOMPtr<nsIBrowserElementAPI> mBrowserElementAPI;
private:
void InitBrowserElementAPI();
bool IsBrowserElementOrThrow(ErrorResult& aRv);
bool IsNotWidgetOrThrow(ErrorResult& aRv);
bool mOwnerIsWidget;
class BrowserShownObserver;
friend class BrowserShownObserver;
nsRefPtr<BrowserShownObserver> mObserver;
};
} // namespace mozilla

8
dom/html/nsGenericHTMLFrameElement.cpp
View File

@ -499,3 +499,11 @@ nsGenericHTMLFrameElement::AllowCreateFrameLoader()
mFrameLoaderCreationDisallowed = false;
return NS_OK;
}
NS_IMETHODIMP
nsGenericHTMLFrameElement::InitializeBrowserAPI()
{
MOZ_ASSERT(mFrameLoader);
InitBrowserElementAPI();
return NS_OK;
}

6
dom/interfaces/html/nsIMozBrowserFrame.idl
View File

@ -85,4 +85,10 @@ interface nsIMozBrowserFrame : nsIDOMMozBrowserFrame
* It is an error to call this method if we already have a frame loader.
*/
void createRemoteFrameLoader(in nsITabParent aTabParent);
/**
* Initialize the API, and add frame message listener to listen to API
* invocations.
*/
[noscript] void initializeBrowserAPI();
};