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Bug 379929 - Lazy creation of nsProperties object for imgContainer

Browse Source 
p=Alfred Kayser <alfredkayser@nl.ibm.com>
r=stuart, sr=tor
This commit is contained in:
asqueella@gmail.com 2007-06-21 13:45:49 -07:00
parent 5e139ac1b7
commit 758861771f
2 changed files with 45 additions and 2 deletions
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45
modules/libpr0n/src/imgContainer.cpp
View File

@ -60,7 +60,6 @@ imgContainer::imgContainer() :
mLoopCount(-1),
mObserver(nsnull)
{
mProperties = do_CreateInstance("@mozilla.org/properties;1");
}
//******************************************************************************
@ -827,3 +826,47 @@ PRBool imgContainer::CopyFrameImage(gfxIImageFrame *aSrcFrame,
return PR_TRUE;
}
/********* Methods to implement lazy allocation of nsIProperties object *************/
NS_IMETHODIMP imgContainer::Get(const char *prop, const nsIID & iid, void * *result)
{
if (!mProperties)
return NS_ERROR_FAILURE;
return mProperties->Get(prop, iid, result);
}
NS_IMETHODIMP imgContainer::Set(const char *prop, nsISupports *value)
{
if (!mProperties)
mProperties = do_CreateInstance("@mozilla.org/properties;1");
if (!mProperties)
return NS_ERROR_OUT_OF_MEMORY;
return mProperties->Set(prop, value);
}
NS_IMETHODIMP imgContainer::Has(const char *prop, PRBool *_retval)
{
NS_ENSURE_ARG_POINTER(_retval);
if (!mProperties) {
*_retval = PR_FALSE;
return NS_OK;
}
return mProperties->Has(prop, _retval);
}
NS_IMETHODIMP imgContainer::Undefine(const char *prop)
{
if (!mProperties)
return NS_ERROR_FAILURE;
return mProperties->Undefine(prop);
}
NS_IMETHODIMP imgContainer::GetKeys(PRUint32 *count, char ***keys)
{
if (!mProperties) {
*count = 0;
*keys = nsnull;
return NS_OK;
}
return mProperties->GetKeys(count, keys);
}

2
modules/libpr0n/src/imgContainer.h
View File

@ -137,7 +137,7 @@ public:
NS_DECL_ISUPPORTS
NS_DECL_IMGICONTAINER
NS_DECL_NSITIMERCALLBACK
NS_FORWARD_SAFE_NSIPROPERTIES(mProperties)
NS_DECL_NSIPROPERTIES
imgContainer();
virtual ~imgContainer();