gecko-dev/dom/permission/PermissionObserver.cpp
Nathan Froyd 01583602a9 Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat
The bulk of this commit was generated with a script, executed at the top
level of a typical source code checkout.  The only non-machine-generated
part was modifying MFBT's moz.build to reflect the new naming.

CLOSED TREE makes big refactorings like this a piece of cake.

 # The main substitution.
find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \
    xargs perl -p -i -e '
 s/nsRefPtr\.h/RefPtr\.h/g; # handle includes
 s/nsRefPtr ?</RefPtr</g;   # handle declarations and variables
'

 # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h.
perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h

 # Handle nsRefPtr.h itself, a couple places that define constructors
 # from nsRefPtr, and code generators specially.  We do this here, rather
 # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename
 # things like nsRefPtrHashtable.
perl -p -i -e 's/nsRefPtr/RefPtr/g' \
     mfbt/nsRefPtr.h \
     xpcom/glue/nsCOMPtr.h \
     xpcom/base/OwningNonNull.h \
     ipc/ipdl/ipdl/lower.py \
     ipc/ipdl/ipdl/builtin.py \
     dom/bindings/Codegen.py \
     python/lldbutils/lldbutils/utils.py

 # In our indiscriminate substitution above, we renamed
 # nsRefPtrGetterAddRefs, the class behind getter_AddRefs.  Fix that up.
find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \
    xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g'

if [ -d .git ]; then
    git mv mfbt/nsRefPtr.h mfbt/RefPtr.h
else
    hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h
fi

--HG--
rename : mfbt/nsRefPtr.h => mfbt/RefPtr.h
2015-10-18 01:24:48 -04:00

132 lines
2.8 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 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 "PermissionObserver.h"
#include "mozilla/dom/PermissionStatus.h"
#include "mozilla/Services.h"
#include "mozilla/UniquePtr.h"
#include "nsIObserverService.h"
#include "nsIPermission.h"
#include "PermissionUtils.h"
namespace mozilla {
namespace dom {
namespace {
PermissionObserver* gInstance = nullptr;
} // namespace
NS_IMPL_ISUPPORTS(PermissionObserver,
nsIObserver,
nsISupportsWeakReference)
PermissionObserver::PermissionObserver()
{
MOZ_ASSERT(!gInstance);
}
PermissionObserver::~PermissionObserver()
{
MOZ_ASSERT(mSinks.IsEmpty());
MOZ_ASSERT(gInstance == this);
gInstance = nullptr;
}
/* static */ already_AddRefed<PermissionObserver>
PermissionObserver::GetInstance()
{
RefPtr<PermissionObserver> instance = gInstance;
if (!instance) {
instance = new PermissionObserver();
nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
if (NS_WARN_IF(!obs)) {
return nullptr;
}
nsresult rv = obs->AddObserver(instance, "perm-changed", true);
if (NS_WARN_IF(NS_FAILED(rv))) {
return nullptr;
}
gInstance = instance;
}
return instance.forget();
}
void
PermissionObserver::AddSink(PermissionStatus* aSink)
{
MOZ_ASSERT(aSink);
MOZ_ASSERT(!mSinks.Contains(aSink));
mSinks.AppendElement(aSink);
}
void
PermissionObserver::RemoveSink(PermissionStatus* aSink)
{
MOZ_ASSERT(aSink);
MOZ_ASSERT(mSinks.Contains(aSink));
mSinks.RemoveElement(aSink);
}
void
PermissionObserver::Notify(PermissionName aName, nsIPrincipal& aPrincipal)
{
for (auto* sink : mSinks) {
if (sink->mName != aName) {
continue;
}
nsIPrincipal* sinkPrincipal = sink->GetPrincipal();
if (NS_WARN_IF(!sinkPrincipal) || !aPrincipal.Equals(sinkPrincipal)) {
continue;
}
sink->PermissionChanged();
}
}
NS_IMETHODIMP
PermissionObserver::Observe(nsISupports* aSubject,
const char* aTopic,
const char16_t* aData)
{
MOZ_ASSERT(!strcmp(aTopic, "perm-changed"));
if (mSinks.IsEmpty()) {
return NS_OK;
}
nsCOMPtr<nsIPermission> perm = do_QueryInterface(aSubject);
if (!perm) {
return NS_OK;
}
nsCOMPtr<nsIPrincipal> principal;
perm->GetPrincipal(getter_AddRefs(principal));
if (!principal) {
return NS_OK;
}
nsAutoCString type;
perm->GetType(type);
Maybe<PermissionName> permission = TypeToPermissionName(type.get());
if (permission) {
Notify(permission.value(), *principal);
}
return NS_OK;
}
} // namespace dom
} // namespace mozilla