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Fixing dogfood+ bug 40571, various problems with multiple form objects with the same name. r=vidur

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This commit is contained in:
jst%netscape.com 2000-06-01 22:55:19 +00:00
parent c775131c74
commit 2950aca9c3
6 changed files with 306 additions and 226 deletions
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1
content/base/src/nsContentList.cpp
View File

@ -43,6 +43,7 @@ nsContentList::nsContentList(nsIDocument *aDocument)
mDocument = aDocument;
mData = nsnull;
mMatchAll = PR_FALSE;
mRootContent = nsnull;
}
nsContentList::nsContentList(nsIDocument *aDocument,

8
content/base/src/nsContentList.h
View File

@ -38,9 +38,8 @@ class nsContentList : public nsIDOMNodeList,
public nsIDOMHTMLCollection,
public nsIScriptObjectOwner,
public nsIDocumentObserver {
protected:
nsContentList(nsIDocument *aDocument);
public:
nsContentList(nsIDocument *aDocument);
nsContentList(nsIDocument *aDocument,
nsIAtom* aMatchAtom,
PRInt32 aMatchNameSpaceId,
@ -119,10 +118,11 @@ public:
nsIStyleRule* aStyleRule) { return NS_OK; }
NS_IMETHOD DocumentWillBeDestroyed(nsIDocument *aDocument);
protected:
nsresult Match(nsIContent *aContent, PRBool *aMatch);
nsresult Add(nsIContent *aContent);
nsresult Remove(nsIContent *aContent);
protected:
nsresult Match(nsIContent *aContent, PRBool *aMatch);
nsresult Reset();
void Init(nsIDocument *aDocument);
void PopulateWith(nsIContent *aContent, PRBool aIncludeRoot);

257
content/html/content/src/nsHTMLFormElement.cpp
View File

@ -45,6 +45,7 @@
#include "nsDOMError.h"
#include "nsLayoutUtils.h"
#include "nsHashtable.h"
#include "nsContentList.h"
static const int NS_FORM_CONTROL_LIST_HASHTABLE_SIZE = 64;
@ -155,7 +156,7 @@ public:
nsIDOMHTMLFormElement* mForm; // WEAK - the form owns me
protected:
nsHashtable* mLookupTable; // A map from an ID or NAME attribute to the form control
nsSupportsHashtable* mLookupTable; // A map from an ID or NAME attribute to the form control(s)
};
// nsHTMLFormElement implementation
@ -606,38 +607,6 @@ nsHTMLFormElement::Resolve(JSContext *aContext, JSObject *aObj, jsval aID)
return PR_FALSE;
}
if ((nsnull == obj) && (nsnull != mInner.mDocument)) {
nsCOMPtr<nsIDOMHTMLDocument> htmlDoc = do_QueryInterface(mInner.mDocument);
if (htmlDoc) {
nsCOMPtr<nsIDOMNodeList> list;
result = htmlDoc->GetElementsByName(name, getter_AddRefs(list));
if (NS_FAILED(result)) {
return PR_FALSE;
}
if (list) {
PRUint32 count;
list->GetLength(&count);
if (count > 0) {
nsCOMPtr<nsIDOMNode> node;
result = list->Item(0, getter_AddRefs(node));
if (NS_FAILED(result)) {
return PR_FALSE;
}
if (node) {
nsCOMPtr<nsIScriptObjectOwner> owner = do_QueryInterface(node);
result = owner->GetScriptObject(scriptContext, (void**)&obj);
if (NS_FAILED(result)) {
return PR_FALSE;
}
}
}
}
}
}
if (nsnull != obj) {
JSObject* myObj;
result = mInner.GetScriptObject(scriptContext, (void**)&myObj);
@ -837,25 +806,45 @@ nsFormControlList::Item(JSContext* cx, jsval* argv, PRUint32 argc, jsval* aRetur
nsresult
nsFormControlList::GetNamedObject(JSContext* aContext, jsval aID, JSObject** aObj)
{
nsCOMPtr<nsIDOMNode> element;
nsresult result = NS_OK;
nsCOMPtr<nsIScriptContext> scriptContext;
nsCOMPtr<nsIScriptObjectOwner> owner;
char* str = JS_GetStringBytes(JS_ValueToString(aContext, aID));
nsAutoString name; name.AssignWithConversion(str);
nsCOMPtr<nsIDocument> document;
nsCOMPtr<nsIContent> form;
NS_ENSURE_ARG_POINTER(aObj);
*aObj = nsnull;
if (nsnull == mForm) {
if (!mForm) {
// No form, no named objects
return NS_OK;
}
form = do_QueryInterface(mForm);
nsresult rv = NS_OK;
nsCOMPtr<nsIScriptContext> scriptContext;
nsCOMPtr<nsIScriptObjectOwner> owner;
char* str = JS_GetStringBytes(JS_ValueToString(aContext, aID));
if (mLookupTable) {
// Get the hash entry
nsStringKey key(str);
nsCOMPtr<nsISupports> tmp = dont_AddRef((nsISupports *)mLookupTable->Get(&key));
if (tmp) {
// Found something, we don't care here if it's a element or a node
// list, we just return the script object
owner = do_QueryInterface(tmp);
}
}
if (!owner) {
// No owner means we didn't find anything, at least not something we can
// return as a JSObject.
return NS_OK;
}
nsCOMPtr<nsIDocument> document;
nsCOMPtr<nsIContent> form = do_QueryInterface(mForm);
if (form) {
result = form->GetDocument(*getter_AddRefs(document));
if (NS_FAILED(result)) {
return result;
rv = form->GetDocument(*getter_AddRefs(document));
if (NS_FAILED(rv)) {
return rv;
}
}
@ -863,7 +852,7 @@ nsFormControlList::GetNamedObject(JSContext* aContext, jsval aID, JSObject** aOb
nsCOMPtr<nsIScriptGlobalObject> globalObject;
document->GetScriptGlobalObject(getter_AddRefs(globalObject));
if (globalObject) {
result = globalObject->GetContext(getter_AddRefs(scriptContext));
rv = globalObject->GetContext(getter_AddRefs(scriptContext));
}
}
@ -872,56 +861,7 @@ nsFormControlList::GetNamedObject(JSContext* aContext, jsval aID, JSObject** aOb
return NS_ERROR_FAILURE;
}
// First see if it's a named element in the form
result = NamedItem(name, getter_AddRefs(element));
if (NS_FAILED(result)) {
return result;
}
if (element) {
nsCOMPtr<nsIContent> content = do_QueryInterface(element);
nsAutoString type;
// See if it is radio button
result = content->GetAttribute(kNameSpaceID_None, nsHTMLAtoms::type, type);
if (NS_FAILED(result)) {
return result;
}
// If it is, then get all radio buttons or checkboxes with the same name
if (document && (type.EqualsWithConversion("Radio") || type.EqualsWithConversion("Checkbox"))) {
nsCOMPtr<nsIDOMHTMLDocument> htmlDoc = do_QueryInterface(document);
if (htmlDoc) {
nsCOMPtr<nsIDOMNodeList> list;
result = htmlDoc->GetElementsByName(name, getter_AddRefs(list));
if (NS_FAILED(result)) {
return result;
}
// Make sure that we have more than one element in the list
if (list) {
PRUint32 count;
list->GetLength(&count);
if (count > 1) {
owner = do_QueryInterface(list);
}
}
}
}
if (!owner) {
owner = do_QueryInterface(element);
}
}
if (owner) {
result = owner->GetScriptObject(scriptContext, (void**)aObj);
if (NS_FAILED(result)) {
return result;
}
}
return result;
return owner->GetScriptObject(scriptContext, (void**)aObj);
}
NS_IMETHODIMP
@ -946,30 +886,89 @@ nsFormControlList::NamedItem(JSContext* cx, jsval* argv, PRUint32 argc, jsval* a
NS_IMETHODIMP
nsFormControlList::NamedItem(const nsString& aName, nsIDOMNode** aReturn)
{
nsresult result = NS_OK;
NS_ENSURE_ARG_POINTER(aReturn);
nsresult rv = NS_OK;
nsStringKey key(aName);
nsIFormControl* control = nsnull;
nsCOMPtr<nsISupports> supports;
*aReturn = nsnull;
if (mLookupTable) {
control = (nsIFormControl*) mLookupTable->Get(&key);
supports = dont_AddRef((nsISupports *)mLookupTable->Get(&key));
}
if (control) {
result = control->QueryInterface(kIDOMNodeIID, (void **)aReturn);
if (supports) {
// We found something, check if it's a node
rv = supports->QueryInterface(NS_GET_IID(nsIDOMNode), (void **)aReturn);
if (NS_FAILED(rv)) {
// If not, we check if it's a node list.
nsCOMPtr<nsIDOMNodeList> nodeList(do_QueryInterface(supports, &rv));
if (nodeList) {
// And since we're only asking for one node here, we return the first
// one from the list.
rv = nodeList->Item(0, aReturn);
}
}
}
return result;
return rv;
}
nsresult
nsFormControlList::AddElementToTable(nsIFormControl* aChild, const nsString& aName)
{
nsStringKey key(aName);
if (!mLookupTable)
mLookupTable = (nsHashtable*) new nsHashtable(NS_FORM_CONTROL_LIST_HASHTABLE_SIZE);
mLookupTable->Put(&key, NS_STATIC_CAST(void*, aChild));
if (!mLookupTable) {
mLookupTable = new nsSupportsHashtable(NS_FORM_CONTROL_LIST_HASHTABLE_SIZE);
NS_ENSURE_TRUE(mLookupTable, NS_ERROR_OUT_OF_MEMORY);
}
nsCOMPtr<nsISupports> supports;
supports = dont_AddRef((nsISupports *)mLookupTable->Get(&key));
if (!supports) {
// No entry found, add the form control
nsCOMPtr<nsISupports> child(do_QueryInterface(aChild));
mLookupTable->Put(&key, child.get());
} else {
// Found something in the hash, check its type
nsCOMPtr<nsIContent> content(do_QueryInterface(supports));
if (content) {
// Found an element, create a list, add the element to the list and put
// the list in the hash
nsContentList *list = new nsContentList(nsnull);
NS_ENSURE_TRUE(list, NS_ERROR_OUT_OF_MEMORY);
list->Add(content);
// Add the new child too
content = do_QueryInterface(aChild);
list->Add(content);
nsCOMPtr<nsISupports> listSupports;
list->QueryInterface(NS_GET_IID(nsISupports),
getter_AddRefs(listSupports));
// Replace the element with the list.
nsISupports *old = (nsISupports *)mLookupTable->Put(&key, listSupports.get());
NS_IF_RELEASE(old); // Release the old value
} else {
// There's already a list in the hash, add the child to the list
nsCOMPtr<nsIDOMNodeList> nodeList(do_QueryInterface(supports));
NS_ENSURE_TRUE(nodeList, NS_ERROR_FAILURE);
// Upcast, uggly, but it works!
nsContentList *list = NS_STATIC_CAST(nsContentList *,
(nsIDOMNodeList *)nodeList.get());
content = do_QueryInterface(aChild);
list->Add(content);
}
}
return NS_OK;
}
@ -983,7 +982,47 @@ nsFormControlList::RemoveElementFromTable(nsIFormControl* aChild)
content->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::id, name) == NS_CONTENT_ATTR_HAS_VALUE))
{
nsStringKey key(name);
mLookupTable->Remove(&key);
nsCOMPtr<nsISupports> supports;
supports = dont_AddRef((nsISupports *)mLookupTable->Get(&key));
if (!supports)
return NS_OK;
nsCOMPtr<nsIFormControl> fctrl(do_QueryInterface(supports));
if (fctrl) {
// Single element in the hash, just remove it...
mLookupTable->Remove(&key);
} else {
nsCOMPtr<nsIDOMNodeList> nodeList(do_QueryInterface(supports));
NS_ENSURE_TRUE(nodeList, NS_ERROR_FAILURE);
// Upcast, uggly, but it works!
nsContentList *list = NS_STATIC_CAST(nsContentList *,
(nsIDOMNodeList *)nodeList.get());
list->Remove(content);
PRUint32 length = 0;
list->GetLength(&length);
if (!length) {
// If the list is empty we remove if from our hash, this shouldn't happen tho
mLookupTable->Remove(&key);
} else if (length == 1) {
// Only one element left, replace the list in the hash with the
// single element.
nsCOMPtr<nsIDOMNode> node;
list->Item(0, getter_AddRefs(node));
if (node) {
nsCOMPtr<nsISupports> tmp(do_QueryInterface(node));
nsISupports *old = (nsISupports *)mLookupTable->Put(&key, tmp.get());
NS_IF_RELEASE(old); // Release the old value
}
}
}
}
return NS_OK;
}

1
layout/base/src/nsContentList.cpp
View File

@ -43,6 +43,7 @@ nsContentList::nsContentList(nsIDocument *aDocument)
mDocument = aDocument;
mData = nsnull;
mMatchAll = PR_FALSE;
mRootContent = nsnull;
}
nsContentList::nsContentList(nsIDocument *aDocument,

8
layout/base/src/nsContentList.h
View File

@ -38,9 +38,8 @@ class nsContentList : public nsIDOMNodeList,
public nsIDOMHTMLCollection,
public nsIScriptObjectOwner,
public nsIDocumentObserver {
protected:
nsContentList(nsIDocument *aDocument);
public:
nsContentList(nsIDocument *aDocument);
nsContentList(nsIDocument *aDocument,
nsIAtom* aMatchAtom,
PRInt32 aMatchNameSpaceId,
@ -119,10 +118,11 @@ public:
nsIStyleRule* aStyleRule) { return NS_OK; }
NS_IMETHOD DocumentWillBeDestroyed(nsIDocument *aDocument);
protected:
nsresult Match(nsIContent *aContent, PRBool *aMatch);
nsresult Add(nsIContent *aContent);
nsresult Remove(nsIContent *aContent);
protected:
nsresult Match(nsIContent *aContent, PRBool *aMatch);
nsresult Reset();
void Init(nsIDocument *aDocument);
void PopulateWith(nsIContent *aContent, PRBool aIncludeRoot);

257
layout/html/content/src/nsHTMLFormElement.cpp
View File

@ -45,6 +45,7 @@
#include "nsDOMError.h"
#include "nsLayoutUtils.h"
#include "nsHashtable.h"
#include "nsContentList.h"
static const int NS_FORM_CONTROL_LIST_HASHTABLE_SIZE = 64;
@ -155,7 +156,7 @@ public:
nsIDOMHTMLFormElement* mForm; // WEAK - the form owns me
protected:
nsHashtable* mLookupTable; // A map from an ID or NAME attribute to the form control
nsSupportsHashtable* mLookupTable; // A map from an ID or NAME attribute to the form control(s)
};
// nsHTMLFormElement implementation
@ -606,38 +607,6 @@ nsHTMLFormElement::Resolve(JSContext *aContext, JSObject *aObj, jsval aID)
return PR_FALSE;
}
if ((nsnull == obj) && (nsnull != mInner.mDocument)) {
nsCOMPtr<nsIDOMHTMLDocument> htmlDoc = do_QueryInterface(mInner.mDocument);
if (htmlDoc) {
nsCOMPtr<nsIDOMNodeList> list;
result = htmlDoc->GetElementsByName(name, getter_AddRefs(list));
if (NS_FAILED(result)) {
return PR_FALSE;
}
if (list) {
PRUint32 count;
list->GetLength(&count);
if (count > 0) {
nsCOMPtr<nsIDOMNode> node;
result = list->Item(0, getter_AddRefs(node));
if (NS_FAILED(result)) {
return PR_FALSE;
}
if (node) {
nsCOMPtr<nsIScriptObjectOwner> owner = do_QueryInterface(node);
result = owner->GetScriptObject(scriptContext, (void**)&obj);
if (NS_FAILED(result)) {
return PR_FALSE;
}
}
}
}
}
}
if (nsnull != obj) {
JSObject* myObj;
result = mInner.GetScriptObject(scriptContext, (void**)&myObj);
@ -837,25 +806,45 @@ nsFormControlList::Item(JSContext* cx, jsval* argv, PRUint32 argc, jsval* aRetur
nsresult
nsFormControlList::GetNamedObject(JSContext* aContext, jsval aID, JSObject** aObj)
{
nsCOMPtr<nsIDOMNode> element;
nsresult result = NS_OK;
nsCOMPtr<nsIScriptContext> scriptContext;
nsCOMPtr<nsIScriptObjectOwner> owner;
char* str = JS_GetStringBytes(JS_ValueToString(aContext, aID));
nsAutoString name; name.AssignWithConversion(str);
nsCOMPtr<nsIDocument> document;
nsCOMPtr<nsIContent> form;
NS_ENSURE_ARG_POINTER(aObj);
*aObj = nsnull;
if (nsnull == mForm) {
if (!mForm) {
// No form, no named objects
return NS_OK;
}
form = do_QueryInterface(mForm);
nsresult rv = NS_OK;
nsCOMPtr<nsIScriptContext> scriptContext;
nsCOMPtr<nsIScriptObjectOwner> owner;
char* str = JS_GetStringBytes(JS_ValueToString(aContext, aID));
if (mLookupTable) {
// Get the hash entry
nsStringKey key(str);
nsCOMPtr<nsISupports> tmp = dont_AddRef((nsISupports *)mLookupTable->Get(&key));
if (tmp) {
// Found something, we don't care here if it's a element or a node
// list, we just return the script object
owner = do_QueryInterface(tmp);
}
}
if (!owner) {
// No owner means we didn't find anything, at least not something we can
// return as a JSObject.
return NS_OK;
}
nsCOMPtr<nsIDocument> document;
nsCOMPtr<nsIContent> form = do_QueryInterface(mForm);
if (form) {
result = form->GetDocument(*getter_AddRefs(document));
if (NS_FAILED(result)) {
return result;
rv = form->GetDocument(*getter_AddRefs(document));
if (NS_FAILED(rv)) {
return rv;
}
}
@ -863,7 +852,7 @@ nsFormControlList::GetNamedObject(JSContext* aContext, jsval aID, JSObject** aOb
nsCOMPtr<nsIScriptGlobalObject> globalObject;
document->GetScriptGlobalObject(getter_AddRefs(globalObject));
if (globalObject) {
result = globalObject->GetContext(getter_AddRefs(scriptContext));
rv = globalObject->GetContext(getter_AddRefs(scriptContext));
}
}
@ -872,56 +861,7 @@ nsFormControlList::GetNamedObject(JSContext* aContext, jsval aID, JSObject** aOb
return NS_ERROR_FAILURE;
}
// First see if it's a named element in the form
result = NamedItem(name, getter_AddRefs(element));
if (NS_FAILED(result)) {
return result;
}
if (element) {
nsCOMPtr<nsIContent> content = do_QueryInterface(element);
nsAutoString type;
// See if it is radio button
result = content->GetAttribute(kNameSpaceID_None, nsHTMLAtoms::type, type);
if (NS_FAILED(result)) {
return result;
}
// If it is, then get all radio buttons or checkboxes with the same name
if (document && (type.EqualsWithConversion("Radio") || type.EqualsWithConversion("Checkbox"))) {
nsCOMPtr<nsIDOMHTMLDocument> htmlDoc = do_QueryInterface(document);
if (htmlDoc) {
nsCOMPtr<nsIDOMNodeList> list;
result = htmlDoc->GetElementsByName(name, getter_AddRefs(list));
if (NS_FAILED(result)) {
return result;
}
// Make sure that we have more than one element in the list
if (list) {
PRUint32 count;
list->GetLength(&count);
if (count > 1) {
owner = do_QueryInterface(list);
}
}
}
}
if (!owner) {
owner = do_QueryInterface(element);
}
}
if (owner) {
result = owner->GetScriptObject(scriptContext, (void**)aObj);
if (NS_FAILED(result)) {
return result;
}
}
return result;
return owner->GetScriptObject(scriptContext, (void**)aObj);
}
NS_IMETHODIMP
@ -946,30 +886,89 @@ nsFormControlList::NamedItem(JSContext* cx, jsval* argv, PRUint32 argc, jsval* a
NS_IMETHODIMP
nsFormControlList::NamedItem(const nsString& aName, nsIDOMNode** aReturn)
{
nsresult result = NS_OK;
NS_ENSURE_ARG_POINTER(aReturn);
nsresult rv = NS_OK;
nsStringKey key(aName);
nsIFormControl* control = nsnull;
nsCOMPtr<nsISupports> supports;
*aReturn = nsnull;
if (mLookupTable) {
control = (nsIFormControl*) mLookupTable->Get(&key);
supports = dont_AddRef((nsISupports *)mLookupTable->Get(&key));
}
if (control) {
result = control->QueryInterface(kIDOMNodeIID, (void **)aReturn);
if (supports) {
// We found something, check if it's a node
rv = supports->QueryInterface(NS_GET_IID(nsIDOMNode), (void **)aReturn);
if (NS_FAILED(rv)) {
// If not, we check if it's a node list.
nsCOMPtr<nsIDOMNodeList> nodeList(do_QueryInterface(supports, &rv));
if (nodeList) {
// And since we're only asking for one node here, we return the first
// one from the list.
rv = nodeList->Item(0, aReturn);
}
}
}
return result;
return rv;
}
nsresult
nsFormControlList::AddElementToTable(nsIFormControl* aChild, const nsString& aName)
{
nsStringKey key(aName);
if (!mLookupTable)
mLookupTable = (nsHashtable*) new nsHashtable(NS_FORM_CONTROL_LIST_HASHTABLE_SIZE);
mLookupTable->Put(&key, NS_STATIC_CAST(void*, aChild));
if (!mLookupTable) {
mLookupTable = new nsSupportsHashtable(NS_FORM_CONTROL_LIST_HASHTABLE_SIZE);
NS_ENSURE_TRUE(mLookupTable, NS_ERROR_OUT_OF_MEMORY);
}
nsCOMPtr<nsISupports> supports;
supports = dont_AddRef((nsISupports *)mLookupTable->Get(&key));
if (!supports) {
// No entry found, add the form control
nsCOMPtr<nsISupports> child(do_QueryInterface(aChild));
mLookupTable->Put(&key, child.get());
} else {
// Found something in the hash, check its type
nsCOMPtr<nsIContent> content(do_QueryInterface(supports));
if (content) {
// Found an element, create a list, add the element to the list and put
// the list in the hash
nsContentList *list = new nsContentList(nsnull);
NS_ENSURE_TRUE(list, NS_ERROR_OUT_OF_MEMORY);
list->Add(content);
// Add the new child too
content = do_QueryInterface(aChild);
list->Add(content);
nsCOMPtr<nsISupports> listSupports;
list->QueryInterface(NS_GET_IID(nsISupports),
getter_AddRefs(listSupports));
// Replace the element with the list.
nsISupports *old = (nsISupports *)mLookupTable->Put(&key, listSupports.get());
NS_IF_RELEASE(old); // Release the old value
} else {
// There's already a list in the hash, add the child to the list
nsCOMPtr<nsIDOMNodeList> nodeList(do_QueryInterface(supports));
NS_ENSURE_TRUE(nodeList, NS_ERROR_FAILURE);
// Upcast, uggly, but it works!
nsContentList *list = NS_STATIC_CAST(nsContentList *,
(nsIDOMNodeList *)nodeList.get());
content = do_QueryInterface(aChild);
list->Add(content);
}
}
return NS_OK;
}
@ -983,7 +982,47 @@ nsFormControlList::RemoveElementFromTable(nsIFormControl* aChild)
content->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::id, name) == NS_CONTENT_ATTR_HAS_VALUE))
{
nsStringKey key(name);
mLookupTable->Remove(&key);
nsCOMPtr<nsISupports> supports;
supports = dont_AddRef((nsISupports *)mLookupTable->Get(&key));
if (!supports)
return NS_OK;
nsCOMPtr<nsIFormControl> fctrl(do_QueryInterface(supports));
if (fctrl) {
// Single element in the hash, just remove it...
mLookupTable->Remove(&key);
} else {
nsCOMPtr<nsIDOMNodeList> nodeList(do_QueryInterface(supports));
NS_ENSURE_TRUE(nodeList, NS_ERROR_FAILURE);
// Upcast, uggly, but it works!
nsContentList *list = NS_STATIC_CAST(nsContentList *,
(nsIDOMNodeList *)nodeList.get());
list->Remove(content);
PRUint32 length = 0;
list->GetLength(&length);
if (!length) {
// If the list is empty we remove if from our hash, this shouldn't happen tho
mLookupTable->Remove(&key);
} else if (length == 1) {
// Only one element left, replace the list in the hash with the
// single element.
nsCOMPtr<nsIDOMNode> node;
list->Item(0, getter_AddRefs(node));
if (node) {
nsCOMPtr<nsISupports> tmp(do_QueryInterface(node));
nsISupports *old = (nsISupports *)mLookupTable->Put(&key, tmp.get());
NS_IF_RELEASE(old); // Release the old value
}
}
}
}
return NS_OK;
}