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lazily instantiate mDocument. bug 88229 r=jst,rpotts

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This commit is contained in:
danm%netscape.com 2001-11-16 02:14:53 +00:00
parent aff7819e0d
commit 452c8e0f41
1 changed files with 7 additions and 0 deletions

7
dom/src/base/nsGlobalWindow.cpp

@ -748,6 +748,13 @@ NS_IMETHODIMP GlobalWindowImpl::GetPrincipal(nsIPrincipal** result)
NS_IMETHODIMP GlobalWindowImpl::GetDocument(nsIDOMDocument** aDocument)
{
/* lazily instantiate an about:blank document if necessary, and if we have
what it takes to do so. Note that domdoc here is the same thing as
our mDocument, but we don't have to explicitly set the member variable
because the docshell has already called SetNewDocument(). */
if (!mDocument && mDocShell)
nsCOMPtr<nsIDOMDocument> domdoc(do_GetInterface(mDocShell));
*aDocument = mDocument;
NS_IF_ADDREF(*aDocument);
return NS_OK;