gecko/xpcom/ds/nsObserverList.cpp
Nathan Froyd e4e2da55c9 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
2015-10-18 01:24:48 -04:00

144 lines
3.4 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 "nsObserverList.h"
#include "nsAutoPtr.h"
#include "nsCOMArray.h"
#include "nsISimpleEnumerator.h"
#include "xpcpublic.h"
nsresult
nsObserverList::AddObserver(nsIObserver* anObserver, bool ownsWeak)
{
NS_ASSERTION(anObserver, "Null input");
if (!ownsWeak) {
ObserverRef* o = mObservers.AppendElement(anObserver);
if (!o) {
return NS_ERROR_OUT_OF_MEMORY;
}
return NS_OK;
}
nsCOMPtr<nsIWeakReference> weak = do_GetWeakReference(anObserver);
if (!weak) {
return NS_NOINTERFACE;
}
ObserverRef* o = mObservers.AppendElement(weak);
if (!o) {
return NS_ERROR_OUT_OF_MEMORY;
}
return NS_OK;
}
nsresult
nsObserverList::RemoveObserver(nsIObserver* anObserver)
{
NS_ASSERTION(anObserver, "Null input");
if (mObservers.RemoveElement(static_cast<nsISupports*>(anObserver))) {
return NS_OK;
}
nsCOMPtr<nsIWeakReference> observerRef = do_GetWeakReference(anObserver);
if (!observerRef) {
return NS_ERROR_FAILURE;
}
if (!mObservers.RemoveElement(observerRef)) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
nsresult
nsObserverList::GetObserverList(nsISimpleEnumerator** anEnumerator)
{
RefPtr<nsObserverEnumerator> e(new nsObserverEnumerator(this));
e.forget(anEnumerator);
return NS_OK;
}
void
nsObserverList::FillObserverArray(nsCOMArray<nsIObserver>& aArray)
{
aArray.SetCapacity(mObservers.Length());
nsTArray<ObserverRef> observers(mObservers);
for (int32_t i = observers.Length() - 1; i >= 0; --i) {
if (observers[i].isWeakRef) {
nsCOMPtr<nsIObserver> o(do_QueryReferent(observers[i].asWeak()));
if (o) {
aArray.AppendObject(o);
} else {
// the object has gone away, remove the weakref
mObservers.RemoveElement(observers[i].asWeak());
}
} else {
aArray.AppendObject(observers[i].asObserver());
}
}
}
void
nsObserverList::AppendStrongObservers(nsCOMArray<nsIObserver>& aArray)
{
aArray.SetCapacity(aArray.Length() + mObservers.Length());
for (int32_t i = mObservers.Length() - 1; i >= 0; --i) {
if (!mObservers[i].isWeakRef) {
aArray.AppendObject(mObservers[i].asObserver());
}
}
}
void
nsObserverList::NotifyObservers(nsISupports* aSubject,
const char* aTopic,
const char16_t* someData)
{
nsCOMArray<nsIObserver> observers;
FillObserverArray(observers);
for (int32_t i = 0; i < observers.Count(); ++i) {
observers[i]->Observe(aSubject, aTopic, someData);
}
}
NS_IMPL_ISUPPORTS(nsObserverEnumerator, nsISimpleEnumerator)
nsObserverEnumerator::nsObserverEnumerator(nsObserverList* aObserverList)
: mIndex(0)
{
aObserverList->FillObserverArray(mObservers);
}
NS_IMETHODIMP
nsObserverEnumerator::HasMoreElements(bool* aResult)
{
*aResult = (mIndex < mObservers.Count());
return NS_OK;
}
NS_IMETHODIMP
nsObserverEnumerator::GetNext(nsISupports** aResult)
{
if (mIndex == mObservers.Count()) {
NS_ERROR("Enumerating after HasMoreElements returned false.");
return NS_ERROR_UNEXPECTED;
}
NS_ADDREF(*aResult = mObservers[mIndex]);
++mIndex;
return NS_OK;
}