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-rw-r--r--gfx/thebes/gfxFT2FontList.cpp15
-rw-r--r--gfx/thebes/gfxFT2FontList.h3
2 files changed, 12 insertions, 6 deletions
diff --git a/gfx/thebes/gfxFT2FontList.cpp b/gfx/thebes/gfxFT2FontList.cpp
index 8a652df0d..09c938a24 100644
--- a/gfx/thebes/gfxFT2FontList.cpp
+++ b/gfx/thebes/gfxFT2FontList.cpp
@@ -812,6 +812,15 @@ public:
: mFontList(aFontList)
{ }
+ void Remove()
+ {
+ nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
+ if (obs) {
+ obs->RemoveObserver(this, NS_XPCOM_WILL_SHUTDOWN_OBSERVER_ID);
+ }
+ mFontList = nullptr;
+ }
+
protected:
virtual ~WillShutdownObserver()
{ }
@@ -847,11 +856,7 @@ gfxFT2FontList::gfxFT2FontList()
gfxFT2FontList::~gfxFT2FontList()
{
if (mObserver) {
- nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
- if (obs) {
- obs->RemoveObserver(mObserver, NS_XPCOM_WILL_SHUTDOWN_OBSERVER_ID);
- }
- mObserver = nullptr;
+ mObserver->Remove();
}
}
diff --git a/gfx/thebes/gfxFT2FontList.h b/gfx/thebes/gfxFT2FontList.h
index 63187ba26..9fb566c15 100644
--- a/gfx/thebes/gfxFT2FontList.h
+++ b/gfx/thebes/gfxFT2FontList.h
@@ -19,6 +19,7 @@ using mozilla::dom::FontListEntry;
class FontNameCache;
typedef struct FT_FaceRec_* FT_Face;
class nsZipArchive;
+class WillShutdownObserver;
class FT2FontEntry : public gfxFontEntry
{
@@ -194,7 +195,7 @@ private:
mozilla::UniquePtr<FontNameCache> mFontNameCache;
int64_t mJarModifiedTime;
- nsCOMPtr<nsIObserver> mObserver;
+ RefPtr<WillShutdownObserver> mObserver;
};
#endif /* GFX_FT2FONTLIST_H */