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Bug 334515: Work with objects that don't support weak references. r/sr=dbaron

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This commit is contained in:
cvshook%sicking.cc 2006-04-27 00:07:44 +00:00
parent 3453632baf
commit a9de930a86
2 changed files with 53 additions and 7 deletions
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57
embedding/components/commandhandler/src/nsBaseCommandController.cpp
View File

@ -55,6 +55,7 @@ NS_INTERFACE_MAP_BEGIN(nsBaseCommandController)
NS_INTERFACE_MAP_END
nsBaseCommandController::nsBaseCommandController()
: mCommandContextRawPtr(nsnull)
{
}
@ -78,7 +79,21 @@ nsBaseCommandController::Init(nsIControllerCommandTable *aCommandTable)
NS_IMETHODIMP
nsBaseCommandController::SetCommandContext(nsISupports *aCommandContext)
{
mCommandContext = do_GetWeakReference(aCommandContext);
mCommandContextWeakPtr = nsnull;
mCommandContextRawPtr = nsnull;
if (aCommandContext) {
nsCOMPtr<nsISupportsWeakReference> weak = do_QueryInterface(aCommandContext);
if (weak) {
nsresult rv =
weak->GetWeakReference(getter_AddRefs(mCommandContextWeakPtr));
NS_ENSURE_SUCCESS(rv, rv);
}
else {
mCommandContextRawPtr = aCommandContext;
}
}
return NS_OK;
}
@ -113,7 +128,13 @@ nsBaseCommandController::IsCommandEnabled(const char *aCommand,
NS_ENSURE_ARG_POINTER(aCommand);
NS_ENSURE_ARG_POINTER(aResult);
NS_ENSURE_STATE(mCommandTable);
nsCOMPtr<nsISupports> context = do_QueryReferent(mCommandContext);
nsISupports* context = mCommandContextRawPtr;
nsCOMPtr<nsISupports> weak;
if (!context) {
weak = do_QueryReferent(mCommandContextWeakPtr);
context = weak;
}
return mCommandTable->IsCommandEnabled(aCommand, context, aResult);
}
@ -123,7 +144,13 @@ nsBaseCommandController::SupportsCommand(const char *aCommand, PRBool *aResult)
NS_ENSURE_ARG_POINTER(aCommand);
NS_ENSURE_ARG_POINTER(aResult);
NS_ENSURE_STATE(mCommandTable);
nsCOMPtr<nsISupports> context = do_QueryReferent(mCommandContext);
nsISupports* context = mCommandContextRawPtr;
nsCOMPtr<nsISupports> weak;
if (!context) {
weak = do_QueryReferent(mCommandContextWeakPtr);
context = weak;
}
return mCommandTable->SupportsCommand(aCommand, context, aResult);
}
@ -132,7 +159,13 @@ nsBaseCommandController::DoCommand(const char *aCommand)
{
NS_ENSURE_ARG_POINTER(aCommand);
NS_ENSURE_STATE(mCommandTable);
nsCOMPtr<nsISupports> context = do_QueryReferent(mCommandContext);
nsISupports* context = mCommandContextRawPtr;
nsCOMPtr<nsISupports> weak;
if (!context) {
weak = do_QueryReferent(mCommandContextWeakPtr);
context = weak;
}
return mCommandTable->DoCommand(aCommand, context);
}
@ -142,7 +175,13 @@ nsBaseCommandController::DoCommandWithParams(const char *aCommand,
{
NS_ENSURE_ARG_POINTER(aCommand);
NS_ENSURE_STATE(mCommandTable);
nsCOMPtr<nsISupports> context = do_QueryReferent(mCommandContext);
nsISupports* context = mCommandContextRawPtr;
nsCOMPtr<nsISupports> weak;
if (!context) {
weak = do_QueryReferent(mCommandContextWeakPtr);
context = weak;
}
return mCommandTable->DoCommandParams(aCommand, aParams, context);
}
@ -152,7 +191,13 @@ nsBaseCommandController::GetCommandStateWithParams(const char *aCommand,
{
NS_ENSURE_ARG_POINTER(aCommand);
NS_ENSURE_STATE(mCommandTable);
nsCOMPtr<nsISupports> context = do_QueryReferent(mCommandContext);
nsISupports* context = mCommandContextRawPtr;
nsCOMPtr<nsISupports> weak;
if (!context) {
weak = do_QueryReferent(mCommandContextWeakPtr);
context = weak;
}
return mCommandTable->GetCommandState(aCommand, aParams, context);
}

3
embedding/components/commandhandler/src/nsBaseCommandController.h
View File

@ -81,7 +81,8 @@ public:
private:
nsWeakPtr mCommandContext;
nsWeakPtr mCommandContextWeakPtr;
nsISupports* mCommandContextRawPtr;
// Our reference to the command manager
nsCOMPtr<nsIControllerCommandTable> mCommandTable;